CN217462779U - Thin steel strip telescopic structure and self-timer rod with thin steel strip telescopic structure - Google Patents

Abstract

The utility model relates to a telescopic link field specifically discloses thin steel band extending structure and have thin steel band extending structure from rapping bar, including telescopic link, telescopic link wears the cover by the unequal sleeve pipe of n section diameters and constitutes together, still includes the thin steel band of elasticity from rapping bar, and the thin steel band of elasticity sets up in telescopic link, and the one end of the thin steel band of elasticity is fixed to be set up in the n section cover of upper end, and the other end of the thin steel band of elasticity is coiled in the 1 st section sheathed tube below of lower extreme and is accomodate. The selfie stick further comprises a driving device, and the output end of the driving device is meshed with the elastic thin steel strip. The utility model discloses a from steerable flexible speed of rapping bar has characteristics such as simple structure, with low costs, longe-lived and easy installation maintenance. And when there is no electricity or the driving device breaks down, the rod body can be manually lengthened or shortened, normal use of a user is not affected, and the automatic telescopic and manual telescopic dual-purpose selfie stick is provided.

Description

Thin steel strip telescopic structure and self-timer rod with thin steel strip telescopic structure

Technical Field

The utility model relates to a scalable pole field, concretely relates to have thin steel band extending structure and have thin steel band extending structure from rapping bar.

Background

The existing telescopic rod is generally formed by sleeving a group of sleeves with different diameters together, the length of the telescopic rod can be manually elongated or shortened, but the telescopic rod cannot be automatically elongated or shortened, so that the use is inconvenient. Some telescopic rods can automatically extend and retract, a multi-section threaded pipe sleeve is driven by a built-in motor to realize longitudinal extension and retraction movement of the telescopic rods, and due to the structure of the telescopic rods, the telescopic rods are generally high in manufacturing cost and complex in process, so that application scenes of the telescopic rods are limited.

In addition current telescopic link, adopt the spiral electric wire to carry out the electrically conductive connection, in order to install the consumer on the telescopic link with power transmission, the spiral electric wire is at first occupation space very big, can lead to the volume grow of telescopic link, compact inadequately, in addition the spiral electric wire is after a lot of reciprocal flexible, outer easy wearing and tearing, the electric leakage, metal fatigue appears easily in long-term use, lead to the spiral electric wire to damage easily at the flexible in-process of telescopic link, and arouse equipment trouble, and the spiral electric wire is often installed in the inside of telescopic link, in case it is very troublesome that the damage maintenance more thoughtlessly appears, greatly increased the time and the cost of maintaining.

The most pole bodies of current cell-phone selfie stick all can not be automatic flexible, bring inconvenience for the use, can be automatic flexible from the selfie stick pole body a bit, but if actuating system had gone wrong, then just can not normal use from the selfie stick, especially from the fault of having gone out when the extension state of selfie stick, owing to can not contract and accomodate, can bring very big puzzlement for the user.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art not enough, provide and have thin steel band extending structure from rapping bar.

In order to solve the technical problems, the following technical scheme is adopted:

the thin steel strip telescopic structure comprises a sleeve type telescopic rod and is characterized in that: the telescopic rod is formed by sleeving n sections of sleeves with different diameters together, the n sections of sleeves are sequentially sleeved and combined from bottom to top, and the 1 st section of sleeve, the 2 nd section of sleeve and the 3 rd section of sleeve … … are sequentially arranged from the sleeve at the lowermost end to the sleeve at the uppermost end;

the telescopic structure further comprises an elastic thin steel strip, the elastic thin steel strip is arranged in the sleeve type telescopic rod, one end of the elastic thin steel strip is fixedly arranged in the nth sleeve at the uppermost end, and the other end of the elastic thin steel strip is wound and stored below the 1 st sleeve at the lowermost end;

the telescopic structure further comprises a driving device, and the output end of the driving device is meshed with the elastic thin steel strip.

Furthermore, the lower ends of the 2 nd section of sleeve to the nth section of sleeve are provided with sealing plates with the diameter matched with the inner diameter of the next adjacent section of sleeve, and the middle parts of the sealing plates are provided with arc-shaped holes with the shapes matched with the cross sections of the elastic thin steel strips;

a sealing plate is arranged on the inner side of the pipe wall of the 1 st section of casing pipe at the lowest end or the lower end of the inner side of the pipe wall, and an arc-shaped hole with the shape matched with the cross section of the elastic thin steel strip is arranged in the middle of the sealing plate;

further, when a sealing plate is arranged on the inner side of the pipe wall of the 1 st section of casing pipe at the lowest end, a sealing plate is arranged at the lower end of the inner side of the pipe wall of the 1 st section of casing pipe, and a space for installing the driving device is formed between the sealing plate and the sealing plate;

when the lower end of the inner side of the pipe wall of the 1 st section of casing pipe at the lowest end is provided with a sealing plate, the sealing plate is connected with a telescopic rod base, a sealing plate is arranged at the bottom of the telescopic rod base, and a space for installing the driving device is formed between the sealing plate and the sealing plate.

Furthermore, except the nth sleeve at the uppermost end, the upper ends of the 1 st sleeve to the (n-1) th sleeve are curled inwards, and the aperture formed by the curled edge is matched with the outer diameter of the sleeve at the adjacent previous section.

Furthermore, the driving device comprises a transmission system consisting of a driving motor and a driving piece, the driving piece is a driving worm or a driving gear, the output end of the driving motor is connected with the driving piece, and the teeth of the driving piece are meshed with the elastic thin steel strip.

Furthermore, the driving device is movably arranged on the inner upper end surface of the sealing plate, the inner lower surface of the sealing plate is provided with a vertical guide rail, and the transmission system is arranged opposite to the guide rail; the guide rail is provided with an arc concave surface facing one side of the transmission system, a groove matched with the teeth of the driving piece exposed out of the elastic thin steel strip is arranged in the middle of the arc concave surface from bottom to top, the guide rail extends downwards from the inner surface and the lower surface of the sealing plate, and the arc concave surface is superposed with the outer side edge of the outline of the arc hole on the sealing plate.

Furthermore, the elastic thin steel strip is arranged between the guide rail and the driving part, and teeth on the driving part are meshed with the hole grooves on the elastic thin steel strip to extrude the elastic thin steel strip on the guide rail.

Furthermore, the telescopic structure also comprises a clutch device, and the clutch device is used for enabling the teeth of the driving piece and the hole grooves on the elastic thin steel strip to be in an engaged state and a separated state.

Further, clutch is first clutch or second clutch, first clutch and second clutch all include pressure spring, slider and slide, the slide set up in on the 1 st sheathed tube inside wall or on the inside wall of telescopic link base, be equipped with the slider in the slide, the pressure spring has been placed between slider and the slide, the slider is connected with motor support perhaps slider and motor support integrated into one piece set up.

Furthermore, the first clutch device further comprises a first button and a first self-locking push rod switch, the first button is arranged on the side surface of the telescopic structure, and a support of the first self-locking push rod switch is fixed on the inner side wall of the 1 st section of sleeve pipe facing the transmission system or the inner side wall of the telescopic rod base; one end of the first self-locking push rod switch is provided with a push rod, the push rod is abutted to the side wall of the driving motor, a first mounting hole is formed in the inner side wall of the 1 st section of sleeve or the inner side wall of the telescopic rod base, and the other end of the first self-locking push rod switch is provided with the first button through the first mounting hole.

Further, the second clutch device also comprises a second button and a second self-locking push rod switch, the second button is arranged on the bottom surface or the side surface of the telescopic structure,

when the second button is arranged on the bottom surface of the telescopic structure, the support of the second self-locking push rod switch is fixed on the plugging plate in a mode that the axis of the second self-locking push rod switch is parallel to the axis of the sleeve, a push rod is arranged at one end of the second self-locking push rod switch, a first inclined surface is formed at the outer end of the push rod, and a second inclined surface matched with the first inclined surface is arranged on the sliding block or the motor support; the other end of the second self-locking push rod switch is provided with the second button through the second mounting hole;

when the second button is arranged on the side surface of the telescopic structure, the support of the second self-locking push rod switch is fixed on the inner side wall of the 1 st section of sleeve facing the transmission system or the inner side wall of the telescopic rod base; the second is equipped with the push rod from the one end of locking-type push rod switch, be provided with the connecting block that the level set up on slider or the motor support, the push rod with the connecting block offsets, through 1 st section sheathed tube inside wall is gone up or the inside wall of telescopic link base has seted up the second mounting hole, the second is installed from the other end of locking-type push rod switch through the second mounting hole the second button.

Furthermore, the clutch is third clutch, third clutch includes that third button and third are from locking-type push rod switch, the third button set up in extending structure's side, the third is followed from locking-type push rod switch's support transmission system below sets up and radially is fixed in on the 1 st section sheathed tube inside wall or on the inside wall of telescopic link base, the third is equipped with the push rod from locking-type push rod switch's one end, the push rod is followed the trompil of support upwards extends and is formed with the connecting seat, the connecting seat is connected transmission system's motor support's lower extreme, through the third mounting hole has been seted up to the inside wall that perhaps telescopic link base on the 1 st section sheathed tube inside wall, the third is installed from locking-type push rod switch's the other end through the third mounting hole the third button.

Further, an operation outer cylinder corresponding to a button of the clutch device is arranged on the lower half part of the 1 st section of sleeve or the outer part of the telescopic rod base, and a protrusion is arranged on the circumferential surface of the inner side of the operation outer cylinder.

Further, an operation outer cylinder corresponding to a button of the clutch device is arranged on the lower half part of the 1 st section of sleeve or the outer part of the telescopic rod base, and a cam assembly arranged in the radial direction is arranged on the inner side wall of the bottom of the inner side of the operation outer cylinder.

Further, at least two parts of conductive layers extending along the length direction are arranged on the elastic thin steel strip, and at least two mutually insulated conductive channels are formed on the conductive layers.

Further, the conductive layer is made of a conductive material.

Further, the two conductive layers are arranged along the width of the elastic thin steel strip and are arranged on the same side of the elastic thin steel strip; or the two conductive layers are arranged along the thickness of the elastic thin steel strip and are arranged on two sides of the elastic thin steel strip.

Furthermore, an electric contact is led out of the conductive layer close to the telescopic end of the elastic thin steel strip and serves as a receiving end of the conductive channel, and an electric contact is led out of the conductive layer close to the winding and accommodating end of the elastic thin steel strip and serves as a sending end of the conductive channel through the electric brush assembly or the electric brush slip ring assembly.

Furthermore, each section of sleeve of the sleeve-type telescopic rod is provided with at least two conductive layers which extend along the length direction, and the conductive layers at least form two mutually insulated conductive channels.

Further, the conductive layer is made of a conductive material.

Furthermore, the two conductive layers are arranged along the circumferential direction of each section.

Furthermore, an electric contact is led out from a section of the sleeve pipe of the conductive layer close to the lowest end of the telescopic rod to serve as a receiving end of a conductive channel, and an electric contact is led out from a section of the sleeve pipe of the conductive layer close to the highest end of the telescopic rod through an electric brush assembly or an electric brush slip ring assembly to serve as a sending end of the conductive channel.

Furthermore, a sliding conductive mechanism is arranged between the lowest casing and the highest casing of the telescopic rod and comprises a conductive part and a sliding conductive unit, the conductive part is strip-shaped and extends along the length direction to be arranged on each casing, the sliding conductive unit is arranged between two adjacent casings and enables the conductive parts in the two adjacent casings to be electrically connected when the two adjacent casings move relatively, and the sliding conductive unit is arranged on the next casing in the two adjacent casings and moves relative to the previous casing along with the next casing.

Further, the sliding conductive unit comprises a conductive contact element and an elastic element, the conductive contact element is movably connected to the sleeve where the conductive contact element is located through the elastic element and is tightly pressed on the conductive part of the previous-stage sleeve by the elastic element, the conductive contact element comprises an electric brush, and the conductive part corresponding to the electric brush is connected with the electric brush.

Furthermore, two mutually insulated conductive channels are formed between a part of the conductive layer of the elastic thin steel strip and a part of the conductive layer on each section of the sleeve type telescopic rod.

Further, an electric contact is respectively led out from the telescopic end of the conductive layer of the elastic thin steel strip and a section of sleeve pipe at the lowest end of the conductive layer of the sleeve type telescopic rod to form a conductive channel receiving end, and an electric contact is respectively led out from the winding receiving end of the conductive layer of the elastic thin steel strip and a section of sleeve pipe at the highest end of the conductive layer of the sleeve type telescopic rod to form a conductive channel receiving end.

The selfie stick comprises the thin steel strip telescopic structure; and the mobile phone support is connected to the upper end of the telescopic rod, and a handle sleeve is arranged outside the telescopic structure.

Due to the adoption of the technical scheme, the method has the following beneficial effects:

the utility model discloses a have thin steel band extending structure and have thin steel band extending structure from rapping bar, steerable flexible speed has characteristics such as simple structure, with low costs, longe-lived and easy installation maintenance. And when there is no electricity or the driving device breaks down, the rod body can be manually lengthened or shortened, normal use of a user is not affected, and the automatic telescopic and manual telescopic dual-purpose selfie stick is provided.

The utility model discloses thin steel band extending structure is by the thin steel band control of drive worm or drive gear drive elasticity flexible, and drive arrangement is simpler, and is preferred, chooses the drive mode of worm for use, makes the axis of worm and motor all parallel with the length direction of telescopic link, very conveniently realizes miniaturized setting.

The elastic thin steel strip is arranged in the telescopic rod, the upper end of the elastic thin steel strip is fixedly arranged in the nth sleeve at the uppermost end, and the lower end of the elastic thin steel strip is wound and stored below the 1 st sleeve at the lowermost end. Specifically, the lower end of the elastic thin steel strip may be fixed to a winding frame, or the lower end of the elastic thin steel strip is a section of self-wound and spiral thin steel strip, the section of self-wound and spiral thin steel strip is shaped into an elastic curling layer, an outer diameter of the elastic curling layer is smaller than a minimum outer diameter in practical use in a no-external-force state, and the elastic curling layer always has a function of applying a radial winding pressure to an inner elastic curling layer of the thin steel strip, that is, has an elastic potential energy of self-curling.

The lower end of the elastic thin steel strip can be automatically wound in a spiral shape (prefabricated) to be stored, and the extending speed and the retracting speed can be controlled.

The driving device is arranged on the tube wall of the 1 st section of casing tube at the lowest end or in the telescopic rod base, and the whole telescopic rod is pen-shaped and has attractive appearance.

The utility model discloses set up clutch, can realize very conveniently converting between manual flexible mode and automatic flexible mode from the rapping bar, when being in automatic mode when electroless or drive arrangement breaks down from the rapping bar, can manual conversion into manual mode by a key, do not influence user normal use.

The telescopic rod is provided with the conductive channel, the conductive channel can be formed by the conductivity of the sleeve of the telescopic rod and/or the elastic thin steel strip, and also can be formed by arranging the conductive pattern layer on the elastic thin steel strip and/or the sleeve of the telescopic rod, so that the problems of poor reliability, troublesome maintenance and large occupied space of the conventional telescopic rod and the spiral wire of the selfie rod are solved.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

fig. 1 is an external structural schematic diagram of a thin steel band telescopic structure in embodiment 1 of the present invention.

Fig. 2 is a schematic view of the internal structure of the thin steel strip telescopic structure in embodiment 1 of the present invention.

Fig. 3 is a schematic structural view of the driving device and the elastic thin steel band according to embodiment 1 of the present invention.

Fig. 4 is a schematic plan view of the elastic thin steel band according to embodiment 1 of the present invention.

Fig. 5 is a schematic structural view of a cross section a-a of the elastic thin steel strip in fig. 4 according to example 1 of the present invention.

Fig. 6 is a schematic structural view of the thin steel strip telescopic structure of embodiment 1 of the present invention after being extended.

Fig. 7 is a schematic structural view of a section B-B of the thin steel strip in fig. 6 after the telescopic structure is extended according to embodiment 1 of the present invention.

Fig. 8 is a schematic structural view of a bushing according to embodiment 1 of the present invention.

Fig. 9 is a schematic sectional view of a sleeve according to embodiment 1 of the present invention.

Fig. 10 is a schematic top view of the casing according to embodiment 1 of the present invention.

Fig. 11 is a schematic structural view of an elastic thin steel band and a worm according to embodiment 1 of the present invention.

Fig. 12 is a schematic view of the cross-sectional structure of the elastic thin steel band and the worm in fig. 11 according to embodiment 1 of the present invention.

Fig. 13 is the utility model discloses in embodiment 2 thin steel band extending structure install from rapping bar on the schematic diagram.

Fig. 14 is a schematic structural view of a first clutch device according to embodiment 3 of the present invention, in which an elastic thin steel band and a worm are in a separated state.

Fig. 15 is a schematic structural view of the first clutch device according to embodiment 3 of the present invention, in which the elastic thin steel band and the worm are in a meshed state.

Fig. 16 is a partial structural schematic view of the first clutch device according to embodiment 3 of the present invention, in which the elastic thin steel band and the worm are in a separated state.

Fig. 17 is a partial schematic structural view of an elastic thin steel band and a worm in a meshing state of a first clutch device according to embodiment 3 of the present invention.

Fig. 18 is a schematic view of a partial structure in which the elastic thin steel band of the second clutch device according to embodiment 4 of the present invention is separated from the worm, and the button is located on the bottom surface of the telescopic structure.

Fig. 19 is a schematic view of a partial structure in which the elastic thin steel band of the second clutch device according to embodiment 4 of the present invention is engaged with the worm, and the button is located on the bottom surface of the telescopic structure.

Fig. 20 is a schematic view of a partial structure in which the elastic thin steel band of the second clutch device according to embodiment 4 of the present invention is separated from the worm, and the button is located on the side of the telescopic structure.

Fig. 21 is a schematic partial structural view showing that the elastic thin steel band of the second clutch device according to embodiment 4 of the present invention is engaged with the worm, and the button is located on the side of the telescopic structure.

Fig. 22 is a partial schematic structural view of the third clutch device according to embodiment 5 of the present invention, in which the elastic thin steel band and the worm are in a separated state.

Fig. 23 is a partial schematic structural view of the third clutch device according to embodiment 5 of the present invention, in which the elastic thin steel band and the worm are in a meshed state.

Fig. 24 is a schematic diagram of an internal cross-sectional structure of a third self-locking push rod switch and a third button of a third clutch device according to the embodiment 5 of the present invention.

Fig. 25 is an internal structural schematic view of a clutch device according to embodiment 6 of the present invention.

Fig. 26 is a schematic top view of a clutch device according to embodiment 6 of the present invention.

Fig. 27 is an internal structural schematic view of a clutch device according to embodiment 7 of the present invention.

Fig. 28 is a schematic structural view of the thin elastic steel strip provided with a conductive layer according to embodiment 8 of the present invention.

Fig. 29 is a schematic structural view of the embodiment 9 of the present invention, wherein a conductive layer is disposed on the elastic thin steel strip.

Fig. 30 is a schematic structural view illustrating a section of a lowermost sleeve of a telescopic rod according to the present invention, wherein a conductive layer is disposed on the lowermost sleeve of the telescopic rod according to embodiment 10.

Fig. 31 is a schematic structural view illustrating that a section of the uppermost sleeve of the telescopic rod of embodiment 10 of the present invention is provided with a conductive layer.

Fig. 32 is a schematic structural view of a sliding conductive mechanism provided in a telescopic rod according to embodiment 11 of the present invention.

In the figure: 1-telescopic rod; 2-a mobile phone support; 3-a telescopic rod base; 4-a handle sleeve; 5-elastic thin steel band; 6-a drive device; 7-a clutch device; 8-plugging plate; 9-pin.

11-a sleeve; 111-closing plate; 112-a guide rail; 113-arc concave; 114-an arc-shaped hole; 115-a trench; 116-a stopping edge.

21-operating the outer cylinder; 22-a bump; 23-cam assembly.

51-a winding frame; 52-an elastic curling layer; 53-elastic thin steel band cross section; 54-hole slot; 55-arc shape.

61-a drive motor; 62-a drive member; 621-drive worm; 63-motor support.

71-a first clutch device; 72-a second clutch device; 73-third clutch means.

711-pressure spring; 712-a slider; 713-a sledge; 714-first button; 715-a first self-locking push rod switch; 716-a support of the first self-locking push rod switch; 717-push rods; 718-first mounting hole.

721-a first inclined plane; 722-a second bevel; 723-connecting block; 724-second button; 725-a second self-locking push rod switch; 726-a support of a second self-locking push rod switch; 728-second mounting hole.

731-connecting seat; 732 supporting a pressure spring; 733-sliding groove; 734-third button; 735-third self-locking push-rod switch; 736-a support of a third self-locking push rod switch; 738-third mounting hole.

81-a conductive layer; 82-an insulating portion; 83-a conductive channel; 84-the receiving end of the conductive channel; 85-a transmitting end of a conductive channel; 86-a brush assembly; 87-Brush slip ring Assembly.

91-a lowermost section of casing; 92-the uppermost length of casing; 93-a sliding conductive unit; 94-conductive part.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail through the accompanying drawings and embodiments. It should be understood, however, that the description herein of specific embodiments is for purposes of illustration only and is not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Example 1

Referring to fig. 1-12, the selfie stick with the thin steel band telescopic structure comprises a mobile phone support 2 and a telescopic rod 1, wherein the mobile phone support 2 is included, the upper end of the telescopic rod 1 is connected with the mobile phone support 2, and a handle sleeve 4 is arranged outside the telescopic structure.

The telescopic rod 1 is formed by sleeving n sections of sleeves 11 with different diameters together, the n sections of sleeves 11 are sequentially sleeved from bottom to top, and the 1 st section of sleeve, the 2 nd section of sleeve and the 3 rd section of sleeve … … are sequentially arranged from the lowest section of sleeve 11 to the uppermost section of sleeve 11. In this embodiment, the telescopic rod 1 is composed of five sections of sleeves 11 which are mutually sleeved together and have an effective length of 0.6 m, and the outer diameter of the previous section of sleeve 11 is slightly smaller than the inner diameter of the next section of sleeve 11 which is adjacently connected. Therefore, in this embodiment, the 1 st casing, the 2 nd casing, the 3 rd casing, the 4 th casing 11 and the 5 th casing 11 are sequentially sleeved and combined from bottom to top to form the telescopic rod 1 of this embodiment.

As a further explanation of the present embodiment, the telescopic structure further includes an elastic thin steel strip 5, the elastic thin steel strip 5 is disposed in the telescopic rod 1, one end of the elastic thin steel strip 5 is fixedly disposed in the n-th casing at the uppermost end, and the other end of the elastic thin steel strip 5 is wound and stored below the 1 st casing at the lowermost end. Specifically, the lower end of the elastic thin steel strip 5 may be fixed to the winding frame 51, thereby achieving the unwinding and storage of the elastic thin steel strip 5.

In the above-mentioned manner of fixing the lower end of the elastic thin steel strip 5, the lower end of the elastic thin steel strip 5 may be made into a section of self-wound and spiral thin steel strip, and the section of self-wound and spiral thin steel strip is shaped into the elastic curled layer 52 whose outer diameter is smaller than the minimum outer diameter in practical use in a state without external force, and the elastic curled layer 52 always has an elastic potential energy of self-curling, which is a radial winding pressure applied to the elastic curled layer 52 of the inner layer of the thin steel strip. In this way the lower end of the elastic thin steel strip 5 can extend to a somewhat larger space below the drive means for self-winding, facilitating further miniaturization of the telescopic rod.

As a further explanation of the present embodiment, the elastic thin steel strip 5 is made of high-quality spring steel. In this embodiment, the length of the elastic thin steel strip 5 is set to 1 meter and the thickness is set to 0.2 mm. In order to adapt to the stretching requirements of different lengths, the length of the elastic thin steel strip 5 can be adaptively adjusted. In this embodiment, the arc spanned by the cross-section 53 of the thin elastic steel strip is 45 °, and the radius of the inner wall of the cross-section 53 of the thin elastic steel strip is 5 mm.

As a further explanation of the embodiment, the telescopic structure further comprises a driving device 6, and an output end of the driving device 6 is engaged with the elastic thin steel strip 5.

As a further description of the present embodiment, the driving device 6 includes a transmission system composed of a driving motor 61 and a driving member 62, the driving member 62 is a driving worm 621 or a driving gear, an output end of the driving motor 61 is connected to the driving member 62, and teeth of the driving member 62 are engaged with the elastic thin steel strip 5.

As a further illustration of the present embodiment, the drive device 6 is movably arranged on the inner upper end surface of the blocking plate 8. In this embodiment, a sealing plate 111 is disposed inside the wall of the 1 st casing at the lowermost end. The driving device 6 is arranged between the lower closing plate 111 and the blocking plate 8 in the 1 st sleeve at the lowermost end.

As a further explanation of the present embodiment, a vertical guide rail 112 is disposed on an inner lower surface of the closing plate 111, and the transmission system is disposed opposite to the guide rail 112; an arc concave surface 113 is arranged on one side, opposite to the transmission system, of the guide rail 112, a groove 115 matched with teeth of the driving piece 62, exposed out of the elastic thin steel strip 5, is arranged in the middle of the arc concave surface 113 from bottom to top, the guide rail 112 extends downwards from the inner lower surface of the sealing plate 111, the arc concave surface 113 coincides with the outer side edge of the outline of the arc hole in the sealing plate 111, and limiting edges 116 for arranging the elastic thin steel strip 5 are arranged on two sides of the guide rail 112.

As a further explanation of the present embodiment, the thin elastic steel strip 5 is disposed between the guide rail 112 and the driving member 62, and the teeth on the driving member 62 are engaged with the hole grooves 54 on the thin elastic steel strip 5 to press the thin elastic steel strip 5 against the guide rail 112. Specifically, the hole grooves 54 on the thin elastic steel strip 5 are a row of through holes or blind holes matched with the tooth form of the driving worm 621, the hole grooves 54 on the thin elastic steel strip 5 are arranged along the length direction of the thin elastic steel strip 5, the row pitch of the hole grooves 54 is equal to the tooth pitch of the driving worm 621, and the cross section 53 of the thin elastic steel strip is an arc 55 matched with the arc concave surface 113 of the guide rail 112.

As a further description of the embodiment, the lower ends of the 2 nd to nth casing pipes are provided with sealing plates 111 whose diameters are matched with the inner diameter of the next adjacent casing pipe 11, and the middle parts of the sealing plates 111 are provided with arc-shaped holes 114 whose shapes are matched with the cross section 53 of the elastic thin steel strip. When the telescopic rod 1 is in the retracted state, the contour of the arc-shaped holes 114 on the closing plates 111 of all the sleeves 11 are overlapped.

As a further explanation of this embodiment, except for the nth sleeve at the uppermost end, the upper end of each sleeve 11 is curled inward, the diameter of the expansion curling is matched with the outer diameter of the next previous sleeve 11, and the upper end of the thin elastic steel strip 5 extends into the nth sleeve at the uppermost end of the telescopic rod 1 through all the arc-shaped holes 114 and is fixed together by the pin 9.

As a further explanation of the present embodiment, a sealing plate 111 is provided on the inner side of the tube wall of the 1 st casing section at the lowermost end, and specifically, the position of the sealing plate 111 on the inner side of the tube wall of the 1 st casing section at the lowermost end is generally determined by the size of the space for installing the driving device 6, wherein the larger the space for installing the driving device 6, the higher the position of the sealing plate 111. In this embodiment, the sealing plate 111 is located at the middle-lower part of the inner side of the tube wall of the 1 st casing section at the lowest end, and the blocking plate 8 is arranged at the lower end of the inner side of the tube wall of the 1 st casing section, so that a space for installing the driving device 6 is formed between the sealing plate 111 and the blocking plate 8.

As a further description of this embodiment, the sleeve and/or the elastic thin steel band of the telescopic rod is provided with an electrically conductive channel. The problem that the current telescopic link and from rapping bar's spiral electric wire reliability is not good, it is troublesome to maintain, occupation space is big is solved. At least one of the sleeve of the telescopic rod and the elastic thin steel strip is made of a conductive material, and the conductivity of the sleeve of the telescopic rod and/or the electric conductivity of the elastic thin steel strip are/is used as a conductive channel, so that the self-timer rod can be conveniently operated or electric energy can be conveniently transmitted.

As a further explanation of the embodiment, a loop for detecting the motor current is arranged in the controller of the driving motor 61, the upper and lower limit detection functions of the telescopic rod 1 are realized by detecting the motor current, when the motor rotates forward to drive the telescopic rod 1 to extend completely, the motor continues to rotate, so that the worm slides due to overload and is separated from the hole groove 54 on the elastic thin steel strip 5, the motor current at the moment is detected, and the telescopic rod 1 is judged to reach the upper limit for automatic stop; when the motor rotates reversely to drive the sleeve-type telescopic rod 1 to retract completely, the motor continues to rotate, so that the worm slips due to overload and is separated from the hole groove 54 on the elastic thin steel strip 5, the current of the motor at the moment is detected, and the telescopic rod is judged to reach the lower limit and stop automatically. The utility model discloses only need just can realize the position sensor's of automated inspection upper limit position and lower limit position effect through the electric current that detects the motor, be flexible locked rotor (the motor can continue to rotate when skidding) when motor overload locked rotor moreover, can follow two aspects of machinery and electrical control and realize protection drive arrangement 6, prevent that the part from becoming invalid.

In this embodiment 1, the telescopic structure controls the extension and retraction and the expansion of the telescopic rod 1 through the driving device 6, specifically, the driving device 6 is disposed on the tube wall of the 1 st casing at the lowermost end or inside the telescopic rod base 3, and the entire telescopic rod is pen-shaped and has a relatively beautiful appearance. Drive the motion of driving piece 62 through driving motor 61, this driving piece 62 is drive worm 621 or drive gear, preferably chooses the drive mode of worm for use, makes the axis of worm and motor all parallel with the length direction of telescopic link, very conveniently realizes the miniaturized setting. Under the meshing action of the teeth of the driving piece 62 and the elastic thin steel strip 5, the elastic thin steel strip 5 is driven to unfold and store, so that the sleeve type telescopic rod 1 can automatically stretch and retract correspondingly, the stretching speed can be controlled, and the telescopic rod has the characteristics of simple structure, low cost, long service life, easiness in installation and maintenance and the like.

Example 2

Referring to fig. 13, the point different from embodiment 1 is that: in this embodiment, a sealing plate 111 is disposed at the lower end of the inner side of the tube wall of the 1 st casing at the lowermost end, and an arc-shaped hole 114 whose shape is matched with the cross section 53 of the elastic thin steel strip is disposed in the middle of the sealing plate 111. When the telescopic rod 1 is in the retracted state, the contour of the arc-shaped holes 114 on the closing plates 111 of all the sleeves 11 are overlapped.

When the sealing plate 111 is arranged at the lower end of the inner side of the tube wall of the 1 st casing tube at the lowest end, the bottom of the sealing plate 111 is connected with the telescopic rod base 3, and the bottom of the telescopic rod base 3 is provided with the plugging plate 8, so that a space for installing the driving device 6 is formed between the sealing plate 111 and the plugging plate 8.

Specifically, in the present embodiment, the design size of the telescopic rod base 3 is determined by the size of the space for installing the driving device 6, wherein the larger the space for installing the driving device 6 is. In this embodiment, the sealing plate 111 is located at the lower end of the tube wall of the 1 st casing at the lowest end, and a blocking plate 8 is disposed at the bottom of the telescopic rod base 3, so that a space for installing the driving device 6 is formed between the sealing plate 111 and the blocking plate 8.

The outside of the telescopic rod base 3 is provided with a handle sleeve 4. In the embodiment 1, the telescopic rod base 3 is not arranged, so the handle sleeve 4 can be directly arranged on the outer wall of the 1 st section of the casing pipe at the lowest end.

Example 3

Referring to fig. 14-17, on the basis of embodiment 1, when the extending structure is in the electroless time or drive arrangement 6 breaks down, still can normal use, the utility model discloses set up clutch 7, can realize very conveniently converting between manual flexible mode and automatic flexible mode from the rapping bar, when being in the electroless time of automatic mode or drive arrangement 6 breaks down from the rapping bar, can manually convert into manual mode by a key, do not influence user's normal use.

As a further explanation of the present embodiment, the clutch device 7 is used to bring the teeth of the driving member 62 into and out of engagement with the slots 54 of the thin elastic steel strip 5. Specifically, the clutch device 7 may have three setting modes, specifically, a first clutch device 71, a second clutch device 72, and a third clutch device 73. The following describes the three types of clutch devices 7 in detail.

As a further description of the present embodiment, when the clutch device 7 is the first clutch device 71, the first clutch device 71 includes a compression spring 711, a sliding block 712, and a sliding seat 713, the sliding seat 713 is disposed on an inner sidewall of the 1 st casing or an inner sidewall of the telescopic rod base 3, the sliding block 712 is disposed in the sliding seat 713, the compression spring 711 is disposed between the sliding block 712 and the sliding seat 713, and the sliding block 712 is connected to the motor bracket 63 or the sliding block 712 and the motor bracket 63 are integrally formed.

As a further description of the present embodiment, the first clutch device 71 further includes a first button 714 and a first self-locking push rod switch 715, the first button 714 is disposed on a side of the telescopic structure, and a support 716 of the first self-locking push rod switch is fixed on an inner sidewall of the 1 st casing facing the transmission system or an inner sidewall of the telescopic rod base 3; one end of the first self-locking push rod switch 715 is provided with a push rod 717, the push rod 717 abuts against the side wall of the driving motor 61, a first mounting hole 718 is formed in the inner side wall of the 1 st section of casing or the inner side wall of the telescopic rod base 3, and the other end of the first self-locking push rod switch 715 is provided with the first button 714 through the first mounting hole 718.

As a further explanation of the present embodiment, when the sliding block 712 and the motor bracket 63 are integrally formed, the first clutch device 71 is formed by a self-locking push rod switch, one end of the push rod 717 of the first self-locking push rod switch 715 abuts against the side wall of the motor of the worm drive system, the operating end of the first self-locking push rod switch 715 passes through the opening on the inner side wall of the outermost casing 11 to be exposed out of the casing 11, and the end portion of the first self-locking push rod switch is in the shape of the first button 714. The left side of the lower end part of the motor support 63 is made into a slider 712 shape, the slider 712 is matched with the sliding seat 713 in a sliding way, a pressure spring 711 is arranged between the slider 712 and the sliding seat 713, and the teeth on the driving piece 62 and the hole groove 54 on the elastic thin steel strip 5 can be in an engaged state and a separated state by pressing the first button 714. Specifically, in the present embodiment, the worm drive system is a worm drive system, and fig. 14 and fig. 16 show a state where the first button 714 is pressed, and one end of the push rod 717 of the first self-locking push rod switch 715 moves left to force the worm of the worm drive system to move left to be separated from the hole groove 54 on the thin elastic steel band 5; fig. 15 and 17 show the first button 714 in a sprung state, with the push rod 717 of the first self-locking push rod switch 715 out of contact with the right side wall of the motor of the worm drive system. The sliding block 712 is driven by a pressure spring 711 to move rightwards along a sliding seat 713, so that a worm of a worm gear transmission system is meshed with the hole groove 54 on the elastic thin steel strip 5; the elasticity of the pressure spring 711 is set, when the worm drives the elastic thin steel strip 5 to overload, the worm can be automatically separated from the through hole on the elastic thin steel strip 5, and the effect of slip protection during overload can be achieved.

As a further explanation of the present embodiment, when the sliding block 712 and the motor bracket 63 are separately disposed, the sliding block 712 and the motor bracket 63 are used as separate components, and the sliding block 712 and the motor bracket 63 need to be fixedly mounted together by a screw or the like. Except for the difference in the structure that the slider 712 and the motor bracket 63 are separately provided, the technical effect achieved by the use is the same as that achieved by integrally forming the slider 712 and the motor bracket 63.

Example 4

Referring to fig. 18-19, as a modification of embodiment 3, the present embodiment uses a second clutch device 72 to engage and disengage the teeth of the driving member 62 of the transmission system with and from the slots 54 of the thin elastic steel band 5.

As a further explanation of the present embodiment, when the clutch device 7 is the second clutch device 72, the second clutch device 72 includes a compression spring 711, a sliding block 712 and a sliding seat 713, the sliding seat 713 is disposed on the inner sidewall of the 1 st casing or the inner sidewall of the telescopic rod base 3, the sliding block 712 is disposed in the sliding seat 713, the compression spring 711 is disposed between the sliding block 712 and the sliding seat 713, and the sliding block 712 is connected to the motor bracket 63 or the sliding block 712 and the motor bracket 63 are integrally formed.

Further, the second clutch device 72 further includes a second button 724 and a second self-locking push rod switch 725, wherein the second button 724 is disposed on the bottom surface or the side surface of the telescopic structure.

When the second button 724 is disposed on the bottom surface of the telescopic structure, the support 726 of the second self-locking push rod switch is fixed on the blocking plate 8 along the axis of the second self-locking push rod switch 725 in a manner of being parallel to the axis of the sleeve 11, one end of the second self-locking push rod switch 725 is provided with a push rod 717, the outer end of the push rod 717 is formed with a first inclined surface 721, and the sliding block 712 or the motor bracket 63 is provided with a second inclined surface 722 adapted to the first inclined surface 721; through the second mounting hole 728 formed on the blocking plate 8, the second button 724 is mounted at the other end of the second self-locking push rod switch 725 through the second mounting hole 728.

Specifically, in the present embodiment, a worm transmission system is adopted, and one end of the push rod 717 of the second self-locking push rod switch 725 is in the shape of a first inclined surface 721 matched with the lower end of the motor support 63 of the worm transmission system in the shape of a second inclined surface 722. The second button 724 is pressed to enable the teeth on the worm of the worm transmission system to be meshed with and separated from the hole grooves 54 on the elastic thin steel belt 5. Fig. 18 shows a state that the second button 724 is pressed, and the first inclined surface 721 of the push rod 717 of the second self-locking push rod switch 725 moves upwards to push the second inclined surface 722 of the lower end of the motor bracket 63 to move left, so that the worm of the worm transmission system moves left to be separated from the hole groove 54 on the elastic thin steel belt 5; fig. 19 shows the second button 724 in a sprung state, the first inclined surface 721 of the push rod 717 of the second self-locking push rod switch 725 moves downwards to move the second inclined surface 722 at the lower end of the motor support 63 to the right, and the slide block 712 is driven by the compression spring 711 to move along the slide seat 713 to move the worm of the worm gear system to engage with the through hole on the elastic thin steel strip 5. The elasticity of the pressure spring 711 is set, when the worm drives the elastic thin steel strip 5 to overload, the worm can be automatically separated from the through hole on the elastic thin steel strip 5, and the effect of slip protection during overload can be achieved.

Referring to fig. 20-21, when the second button 724 is disposed on the side of the telescopic structure, the support 726 of the second self-locking push rod switch is fixed on the inner sidewall of the 1 st casing facing the transmission system or the inner sidewall of the telescopic rod base 3; one end of the second self-locking push rod switch 725 is provided with a push rod 717, the sliding block 712 or the motor bracket 63 is provided with a horizontally arranged connecting block 723, the push rod 717 abuts against the connecting block 723, a second mounting hole 728 is formed in the inner side wall of the 1 st section of sleeve or the inner side wall of the telescopic rod base 3, and the other end of the second self-locking push rod switch 725 is provided with the second button 724 through the second mounting hole 728.

Specifically, in the present embodiment, a worm transmission system is adopted, a push rod 717 is disposed at one end of the second self-locking push rod switch 725, a horizontally disposed connecting block 723 is disposed on the sliding block 712 or the motor bracket 63, and the push rod 717 abuts against the connecting block 723. The second button 724 is pressed to enable the teeth on the worm of the worm transmission system to be meshed with and separated from the hole grooves 54 on the elastic thin steel belt 5. FIG. 20 shows the first button 714 pressed, and the left movement of one end of the push rod 717 of the first self-locking push rod switch 715 forces the left movement of the worm drive system to separate from the slot 54 of the thin elastic steel band 5; fig. 21 shows the first button 714 in a sprung state, with the push rod 717 of the first self-locking push rod switch 715 out of contact with the connecting block 723. The sliding block 712 is driven by the compression spring 711 to move right along the sliding seat 713, so that the worm of the worm gear transmission system is meshed with the through hole in the elastic thin steel strip 5. The elasticity of the pressure spring 711 is set, when the worm drives the elastic thin steel strip 5 to overload, the worm can be automatically separated from the through hole on the elastic thin steel strip 5, and the effect of slip protection during overload can be achieved.

Example 5

Referring to fig. 22-25, as an improvement to embodiment 3, this embodiment uses a third clutch device 73 to engage and disengage the teeth of the drive member 62 of the transmission system with and from the slots 54 in the thin elastic steel strip 5.

As a further explanation of the present embodiment, when the clutch device 7 is the third clutch device 73, the third clutch means 73 comprises a third push button 734 and a third self-locking push rod switch 735, the third button 734 is arranged at the side of the telescopic structure, the support 736 of the third self-locking push rod switch is arranged along the lower part of the transmission system and radially fixed on the inner side wall of the 1 st section of casing or the inner side wall of the telescopic rod base 3, one end of the third self-locking push rod switch 735 is provided with a push rod 717, the push rod 717 extends upwards along the opening of the support to form a connecting seat 731, the connecting seat 731 is connected with the lower end of the motor bracket 63 of the transmission system, through the third installation hole 738 is arranged on the inner side wall of the 1 st section of sleeve or the inner side wall of the telescopic rod base 3, the other end of the third self-locking push rod switch 735 is provided with the third button 734 through a third mounting hole 738.

Specifically, the upper part of the push rod 717 is provided with a support pressure spring 732, and one side of the support pressure spring 732 close to the connecting seat 731 is arranged in a support 736 of the third self-locking push rod switch. A sliding groove 733 is arranged at the lower part of the push rod 717, and one side of the sliding groove 733 far away from the connecting seat 731 is arranged in a support 736 of the third self-locking push rod switch.

Example 6

Referring to fig. 25 and 26, on the basis of embodiments 3, 4 and 5, when the button of the clutch device 7 is arranged on the side of the telescopic structure, the lower half part of the 1 st casing or the outside of the telescopic rod base 3 is provided with an operation outer cylinder 21 corresponding to the button of the clutch device 7, and the inner circumferential surface of the operation outer cylinder 21 is provided with a protrusion 22.

Example 7

Referring to fig. 27, on the basis of embodiment 1, when the button of the clutch device 7 is disposed on the bottom surface of the telescopic structure, the lower half part of the 1 st casing or the outside of the telescopic rod base 3 is provided with an operation outer cylinder 21 corresponding to the button of the clutch device 7, and the inner side wall of the inner bottom of the operation outer cylinder 21 is provided with a cam assembly 23 disposed radially.

Example 8

Referring to fig. 28, in addition to embodiments 3 to 7, in order to facilitate the handling of the self-timer stick or the transmission of electric power, a conductive layer 81 may be provided on the elastic thin steel strip 5, and a conductive path 83 may be formed by surface-coating or adhering the conductive layer 81 that can be flexibly rolled.

Specifically, at least two conductive layers 81 extending along the length direction are disposed on the elastic thin steel strip 5, and at least two conductive channels 83 insulated from each other are formed in the conductive layers 81. The elastic thin steel strip 5 body is made of non-conductive material, so that the elastic thin steel strip 5 body forms an insulating part 82 for isolating a conductive channel 83 formed by the conductive pattern layer 81.

In particular, the conductive layer 81 is made of a conductive material.

Specifically, the two conductive layers 81 are arranged along the width of the elastic thin steel strip 5 and on the same side of the elastic thin steel strip 5; specifically, an electric contact is led out of the conductive layer 81 close to the telescopic end of the elastic thin steel strip 5 to serve as a receiving end 84 of a conductive channel, and an electric contact is led out of the conductive layer 81 close to the winding receiving end of the elastic thin steel strip 5 through an electric brush assembly 86 or an electric brush slip ring assembly 87 to serve as a sending end 85 of the conductive channel.

Example 9

Referring to fig. 29, the difference from embodiment 8 is that: the two conductive layers 81 are arranged along the thickness of the elastic thin steel strip 5 and are arranged on two sides of the elastic thin steel strip 5.

Example 10

Referring to fig. 30 and 31, on the basis of the embodiments 3 to 7, in order to facilitate the operation of the selfie stick or the transmission of electric power, a conductive layer 81 may be provided on the telescopic rod 1.

Each section of the sleeve of the telescopic rod 1 is provided with at least two conductive layers 81 extending along the length direction, and the conductive layers 81 at least form two mutually insulated conductive channels 83. The body of the elastic thin steel strip 5 is made of non-conductive material, so that the body of the telescopic rod 1 forms an insulating part 82 to isolate a conductive channel 83 formed by the conductive pattern layer 81.

Specifically, the conductive layer 81 is made of a conductive material.

Specifically, two portions of the conductive layer 81 are arranged along each pitch of the circumferential direction.

Specifically, the conductive layer 81 leads out an electrical contact as a receiving end 84 of a conductive path near a lowermost sleeve of the telescopic rod 1, and the conductive layer 81 leads out an electrical contact as a sending end 85 of the conductive path through a brush assembly 86 or a brush slip ring assembly 87 near an uppermost sleeve 92 of the telescopic rod 1.

Example 11

Referring to fig. 32, in embodiment 9, a sliding conductive mechanism is disposed between a lowermost sleeve and an uppermost sleeve 92 of the telescopic rod 1, the sliding conductive mechanism includes a conductive portion 94 and a sliding conductive unit 93, the conductive portion 94 is a strip and extends along a length direction and is disposed on each sleeve, the sliding conductive unit 93 is disposed between two adjacent sleeves and electrically connects the conductive portions 94 in the sleeves of two adjacent stages when the sleeves of two adjacent stages move relatively, and the sliding conductive unit 93 is disposed on a subsequent sleeve of the sleeves of two adjacent stages and moves with the subsequent sleeve relative to the previous sleeve.

Specifically, the sliding conductive unit 93 includes a conductive contact piece and an elastic piece, the conductive contact piece is movably connected to the sleeve on which the conductive contact piece is located, and is pressed against the conductive portion 94 of the previous-stage sleeve by the elastic piece, the conductive contact piece includes a brush, and the conductive portion 94 corresponding to the brush is connected to the brush.

Example 12

As a modification of the embodiments 8 to 11, two mutually insulated conductive paths 83 may be formed between a part of the conductive layer 81 of the thin elastic steel strip 5 and a part of the conductive layer 81 on each sleeve of the telescopic rod 1.

Specifically, one electric contact forming conductive path 83 receiving end is led out from each of the telescopic end of the conductive layer 81 of the elastic thin steel strip 5 and the one sleeve at the lowermost end of the conductive layer 81 of the telescopic rod 1, and one electric contact forming conductive path 83 receiving end is led out from each of the winding receiving end of the conductive layer 81 of the elastic thin steel strip 5 and the one sleeve 92 at the uppermost end of the conductive layer 81 of the telescopic rod 1.

The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made on the basis of the present invention to solve the same technical problems and achieve the same technical effects are all covered by the protection scope of the present invention.

Claims (27)

1. The thin steel strip telescopic structure comprises a sleeve type telescopic rod and is characterized in that: the telescopic rod is formed by sleeving n sections of sleeves with different diameters together, the n sections of sleeves are sequentially sleeved and combined from bottom to top, and the 1 st section of sleeve, the 2 nd section of sleeve and the 3 rd section of sleeve … … are sequentially arranged from the sleeve at the lowermost end to the sleeve at the uppermost end;

the telescopic structure further comprises an elastic thin steel strip, the elastic thin steel strip is arranged in the sleeve type telescopic rod, one end of the elastic thin steel strip is fixedly arranged in the n-th sleeve at the uppermost end, and the other end of the elastic thin steel strip is wound and stored below the 1 st sleeve at the lowermost end;

the telescopic structure further comprises a driving device, and the output end of the driving device is meshed with the elastic thin steel strip;

the driving device comprises a transmission system consisting of a driving motor and a driving piece;

the sleeve and/or the elastic thin steel band of the sleeve type telescopic rod is/are provided with a conductive channel;

the telescopic structure further comprises a clutch device, and the clutch device is used for enabling the teeth of the driving piece and the hole grooves in the elastic thin steel strip to be in an engaged state and a separated state.

2. The thin steel strip telescopic structure of claim 1, wherein:

the lower ends of the 2 nd section of sleeve to the nth section of sleeve are provided with sealing plates with the diameters matched with the inner diameters of the adjacent next section of sleeve, and the middle parts of the sealing plates are provided with arc-shaped holes with the shapes matched with the cross sections of the elastic thin steel strips;

and a sealing plate is arranged on the inner side of the pipe wall of the 1 st section of casing pipe at the lowest end or the lower end of the inner side of the pipe wall, and an arc-shaped hole with the shape matched with the cross section of the elastic thin steel strip is arranged in the middle of the sealing plate.

3. The thin steel strip telescopic structure of claim 2, wherein:

when the sealing plate is arranged on the inner side of the pipe wall of the 1 st section of casing pipe at the lowest end, the sealing plate is arranged at the lower end of the inner side of the pipe wall of the 1 st section of casing pipe, and a space for installing the driving device is formed between the sealing plate and the sealing plate;

when the lower extreme is equipped with the shrouding at the inboard lower extreme of 1 st section of sheathed tube pipe wall of bottommost, the shrouding is connected with the telescopic link base, the bottom of telescopic link base is equipped with the shutoff board, be formed with between shrouding and the shutoff board and install drive arrangement's space.

4. The thin steel strip telescopic structure according to claim 1 or 3, wherein: except the nth sleeve at the uppermost end, the upper ends of the 1 st sleeve to the (n-1) th sleeve are curled inwards, and the aperture formed by the curled edge is matched with the outer diameter of the sleeve at the next upper section.

5. The thin steel strip telescopic structure of claim 3, wherein: the driving piece is a driving worm or a driving gear, the output end of the driving motor is connected with the driving piece, and teeth of the driving piece are meshed with the elastic thin steel strip.

6. The thin steel strip telescopic structure of claim 5, wherein: the driving device is movably arranged on the inner upper end surface of the plugging plate, the inner lower surface of the plugging plate is provided with a vertical guide rail, and the transmission system is arranged opposite to the guide rail; the guide rail is characterized in that an arc concave surface is arranged on one side, which is over against the transmission system, of the guide rail, a groove matched with the teeth of the driving piece, which are exposed out of the elastic thin steel strip, is arranged in the middle of the arc concave surface from bottom to top, the guide rail extends downwards from the inner surface and the lower surface of the sealing plate, and the arc concave surface is overlapped with the outer side edge of the outline of the arc hole in the sealing plate.

7. The thin steel strip telescopic structure of claim 6, wherein: the elastic thin steel strip is arranged between the guide rail and the driving part, and teeth on the driving part are meshed with the hole grooves on the elastic thin steel strip to extrude the elastic thin steel strip onto the guide rail.

8. The thin steel strip telescopic structure of claim 5, wherein: the clutch is first clutch or second clutch, first clutch and second clutch all include pressure spring, slider and slide, the slide set up in on the 1 st section sheathed tube inside wall or on the inside wall of telescopic link base, be equipped with the slider in the slide, the pressure spring has been placed between slider and the slide, the slider is connected with motor support perhaps slider and motor support integrated into one piece set up.

9. The thin steel strip telescopic structure of claim 8, wherein: the first clutch device further comprises a first button and a first self-locking push rod switch, the first button is arranged on the side face of the telescopic structure, and a support of the first self-locking push rod switch is fixed on the inner side wall of the 1 st section of sleeve facing the transmission system or the inner side wall of the telescopic rod base; one end of the first self-locking push rod switch is provided with a push rod, the push rod is abutted to the side wall of the driving motor, a first mounting hole is formed in the inner side wall of the 1 st section of sleeve or the inner side wall of the telescopic rod base, and the other end of the first self-locking push rod switch is provided with the first button through the first mounting hole.

10. The thin steel strip telescopic structure of claim 8, wherein: the second clutch device also comprises a second button and a second self-locking push rod switch, the second button is arranged on the bottom surface or the side surface of the telescopic structure,

when the second button is arranged on the bottom surface of the telescopic structure, the support of the second self-locking push rod switch is fixed on the plugging plate in a manner that the axis of the second self-locking push rod switch is parallel to the axis of the sleeve, a push rod is arranged at one end of the second self-locking push rod switch, a first inclined surface is formed at the outer end of the push rod, and a second inclined surface matched with the first inclined surface is arranged on the sliding block or the motor support; the other end of the second self-locking push rod switch is provided with the second button through the second mounting hole;

when the second button is arranged on the side surface of the telescopic structure, the support of the second self-locking push rod switch is fixed on the inner side wall of the 1 st section of sleeve facing the transmission system or the inner side wall of the telescopic rod base; the second is equipped with the push rod from the one end of locking-type push rod switch, be provided with the connecting block that the level set up on slider or the motor support, the push rod with the connecting block offsets, through 1 st section sheathed tube inside wall is gone up or the inside wall of telescopic link base has seted up the second mounting hole, the second is installed from the other end of locking-type push rod switch through the second mounting hole the second button.

11. The thin steel strip telescopic structure of claim 5, wherein: the clutch is the third clutch, the third clutch includes that third button and third are from locking-type push rod switch, the third button set up in extending structure's side, the third is followed from locking-type push rod switch's support the transmission system below sets up and radially is fixed in on the 1 st section sheathed tube inside wall or the inside wall of telescopic link base, the third is equipped with the push rod from locking-type push rod switch's one end, the push rod is followed the trompil of support upwards extends and is formed with the connecting seat, the connecting seat is connected the lower extreme of transmission system's motor support, through the third mounting hole has been seted up on the 1 st section sheathed tube inside wall or the inside wall of telescopic link base, the third is installed from locking-type push rod switch's the other end through the third mounting hole the third button.

12. The thin steel strip telescopic structure according to claim 9, 10 or 11, wherein: an operation outer cylinder corresponding to a button of the clutch device is arranged on the lower half part of the 1 st section of sleeve or the outer part of the telescopic rod base, and a protrusion is arranged on the circumferential surface of the inner side of the operation outer cylinder.

13. The thin steel strip telescopic structure of claim 10, wherein: an operation outer cylinder corresponding to a button of the clutch device is arranged on the lower half part of the 1 st section of sleeve or the outer part of the telescopic rod base, and a cam assembly arranged in the radial direction is arranged on the inner side wall of the bottom of the inner side of the operation outer cylinder.

14. The thin steel strip telescopic structure of claim 1, wherein: the elastic thin steel strip is provided with at least two conductive layers extending along the length direction, and the conductive layers at least form two mutually insulated conductive channels.

15. The thin steel strip telescopic structure of claim 14, wherein: the conductive layer is made of a conductive material.

16. The thin steel strip telescopic structure of claim 14, wherein: the two conductive layers are arranged along the width of the elastic thin steel strip and are arranged on the same side of the elastic thin steel strip; or the two conductive layers are arranged along the thickness of the elastic thin steel strip and are arranged on two sides of the elastic thin steel strip.

17. The thin steel strip telescopic structure of claim 14, wherein: and an electric contact is led out of the conductive layer close to the telescopic end of the elastic thin steel strip and serves as a receiving end of the conductive channel, and an electric contact is led out of the conductive layer close to the winding and accommodating end of the elastic thin steel strip and serves as a sending end of the conductive channel through the electric brush assembly or the electric brush slip ring assembly.

18. The thin steel strip telescopic structure according to claim 1 or 14, wherein: each section of the sleeve type telescopic rod is provided with at least two conductive layers which extend along the length direction, and the conductive layers at least form two mutually insulated conductive channels.

19. The thin steel strip telescopic structure of claim 18, wherein: the conductive layer is made of a conductive material.

20. The thin steel strip telescopic structure of claim 18, wherein: and the two conductive layers are distributed along the circumferential direction of each section of sleeve.

21. The thin steel strip telescopic structure of claim 18, wherein: and an electric contact is led out from a section of sleeve pipe of the conductive layer, which is close to the lowermost end of the telescopic rod, and serves as a receiving end of a conductive channel, and an electric contact is led out from a section of sleeve pipe of the conductive layer, which is close to the uppermost end of the telescopic rod, and serves as a transmitting end of the conductive channel through an electric brush assembly or an electric brush slip ring assembly.

22. The thin steel strip telescopic structure of claim 18, wherein: the telescopic rod is characterized in that a sliding conductive mechanism is arranged between the casing at the lowermost end and the casing at the uppermost end of the telescopic rod and comprises a conductive part and a sliding conductive unit, the conductive part is strip-shaped and extends along the length direction to be arranged on each casing, the sliding conductive unit is arranged between two adjacent casings and enables the conductive parts in the casings of two adjacent stages to be electrically connected when the casings of two adjacent stages move relatively, and the sliding conductive unit is arranged on the casing at the next stage in the casings of two adjacent stages and moves relative to the casing at the previous stage along with the casing at the next stage.

23. The thin steel strip telescopic structure of claim 22, wherein: the sliding conductive unit comprises a conductive contact element and an elastic element, the conductive contact element is movably connected to the sleeve where the conductive contact element is located through the elastic element and is tightly pressed on the conductive part of the previous-stage sleeve by the elastic element, the conductive contact element comprises an electric brush, and the conductive part corresponding to the electric brush is connected with the electric brush.

24. The thin steel strip telescopic structure of claim 18, wherein: two mutually insulated conductive channels are formed between a part of the conductive layer of the elastic thin steel strip and a part of the conductive layer on each section of the sleeve type telescopic rod.

25. The thin steel strip telescopic structure of claim 24, wherein: and respectively leading out an electric contact from the telescopic end of the conductive layer of the elastic thin steel strip and a section of sleeve pipe at the lowest end of the conductive layer of the sleeve type telescopic rod to form a conductive channel receiving end, and respectively leading out an electric contact from the winding receiving end of the conductive layer of the elastic thin steel strip and a section of sleeve pipe at the highest end of the conductive layer of the sleeve type telescopic rod to form a conductive channel receiving end.

26. The thin steel strip telescopic structure of claim 1, wherein: at least one of the sleeve of the telescopic rod and the elastic thin steel strip is made of conductive materials, and the conductivity of the sleeve of the telescopic rod and/or the elastic thin steel strip is used as a conductive channel.

27. From rapping bar, its characterized in that: comprising a thin steel strip telescopic structure according to any one of the claims 1, 2, 3, 5, 8, 9, 10, 11, 13, 14, 15, 16, 17; and the mobile phone support is connected to the upper end of the telescopic rod, and a handle sleeve is arranged outside the telescopic structure.

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