Telescopic rod assembly, forming method and application of telescopic rod assembly

Abstract

The invention relates to the technical field of telescopic rods, in particular to a telescopic rod assembly, a forming method and application thereof.The telescopic rod assembly comprises a driving rod, unit rods are sequentially connected to form telescopic fit, a telescopic pipe fitting is arranged outside the driving rod in a sleeving mode and is formed by sequentially connecting unit pipes, and linear limiting parts are arranged on the unit pipes; the adjacent unit pipes are in linear telescopic fit through linear limiting parts, the driving thread pieces are located on the unit rods correspondingly, holes are formed in the pipe walls of the unit pipes and spirally extend in the pipe length direction of the unit pipes, the driving thread pieces are matched with the unit pipes correspondingly, thread protrusions are arranged outside the driving thread pieces, and the driving thread pieces are matched with the unit pipes. According to the telescopic rod assembly, the threaded protrusion is matched with the hole of the unit pipe, the driving rod rotates, telescopic driving of the telescopic pipe fitting is implemented by driving the threaded piece, the telescopic rod assembly can achieve telescopic rod design of more stages more easily, when a larger shooting range and higher flexibility are pursued, the requirement can be met by reasonably increasing the telescopic stages, and better expansibility is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of telescopic rods, in particular to a telescopic rod assembly, a molding method and applications thereof. Background Art

[0002] At present, telescopic rods mostly use a screw nut mechanism to realize the automatic telescopic function of the telescopic rod. The technical principle is to set a thread groove in the tube cavity of the multi-stage telescopic rod and arrange a multi-stage electric screw inside the telescopic rod. When working, the electric screw rotates and cooperates with the thread grooves of the corresponding multi-stage telescopic rod tube cavity. By starting the electric screw to rotate, the multi-stage electric screw is extended, and then the multi-stage telescopic rod is driven to perform telescopic action.

[0003] However, this automatic telescopic structure driven by a screw nut has many disadvantages. First, in terms of structural design, in order to achieve multi-stage telescopic movement, it is necessary to accurately machine the thread grooves in the tube cavity of each stage of the telescopic rod, and install multi-stage electric screws inside, which makes the overall structure extremely complex. The complex structure not only increases the process difficulty and precision requirements in the manufacturing process, but also leads to a longer production cycle, greatly increases the production cost, and is not conducive to the large-scale promotion and popularization of the product.

[0004] Secondly, due to the limitations of the tube cavity space and thread groove processing technology, this structure faces many difficulties in realizing the design of more telescopic rods. As the number of stages increases, the space inside the tube cavity becomes more and more cramped, the difficulty of thread groove processing increases exponentially, and the installation and coordination of multi-stage electric screws also become difficult to achieve. This makes it impossible for existing telescopic rods to meet the needs of pursuing a larger shooting range and higher flexibility by increasing the number of telescopic stages.

[0005] Furthermore, the complex structure and the large number of components increase the weight of the entire telescopic rod. For telescopic rods that need to be handheld (such as those used in umbrellas or selfie sticks), an overly heavy telescopic rod will put a heavy burden on the user, affecting the user experience, especially when holding it for a long time or adjusting the shooting angle, the user will easily feel tired, reducing the practicality of the product.

[0006] In summary, the existing screw-nut driven telescopic rods have significant defects in structural complexity, cost control, series expansion and weight optimization, and it is difficult to meet the market's urgent demand for high-performance, low-cost, lightweight telescopic rods with flexible telescopic functions. Summary of the invention

[0007] The purpose of the present invention is to provide a telescopic rod assembly, a molding method and applications thereof, aiming to solve the significant defects in the above-mentioned telescopic rod technical problems in terms of structural complexity, cost control, series expansion and weight optimization.

[0008] The present invention solves the technical problem by adopting the following technical solution:

[0009] A telescopic rod assembly, comprising:

[0010] The driving rod is composed of a plurality of unit rods connected in sequence and forming a telescopic fit;

[0011] The telescopic pipe is sleeved outside the driving rod and is composed of a plurality of unit pipes connected in sequence;

[0012] A linear limiting portion is arranged on the unit tube, and adjacent unit tubes are connected to each other through the linear limiting portion to form a linear telescopic fit;

[0013] Driving screw thread members are respectively arranged on the multiple groups of unit rods;

[0014] Wherein, a hole is opened on the tube wall of the unit tube, and the hole is arranged in a spiral extension along the tube length direction of the unit tube;

[0015] The plurality of groups of driving screws are respectively matched with the plurality of group of unit tubes, the driving screws are provided with screw protrusions outside, the screw protrusions are matched with the holes of the unit tubes, the driving rod rotates, and the telescopic tube is telescopically driven by the driving screws.

[0016] The present invention also has the following technical features:

[0017] In one embodiment of the present invention, it also includes an outer sleeve member, which is composed of a plurality of groups of unit sleeves connected in sequence, and the plurality of groups of unit sleeves are respectively sleeved outside the unit pipes, and the linear limiting portion forms a linear telescopic fit.

[0018] In one embodiment of the present invention, the holes are arranged in a plurality of groups at intervals in the tube length direction of the unit tube, and the holes are arranged in a strip shape as a whole and are arranged in a spiral extension along the tube wall of the unit tube;

[0019] The screw thread protrusion is spiral-shaped as a whole and is extended along the length direction of the outer wall of the driving screw thread member.

[0020] In one embodiment of the present invention, the linear limiting portion is composed of a limiting convex strip arranged on the outer wall of the unit tube, the limiting convex strip is arranged along the unit tube, adjacent unit tubes form a plug-in fit, and the limiting convex strip on the outer wall of the unit tube forms a sliding fit with the inner wall of the limiting convex strip of the adjacent unit tube.

[0021] In one embodiment of the present invention, the limiting convex strips are located on the tube core of the unit tube and are symmetrically arranged in two groups.

[0022] In one embodiment of the present invention, the outer wall of the unit tube includes a hole-arranging portion, and the hole-arranging portion and the limiting convex strip are combined to form the unit tube, and the holes are arranged at intervals along the length direction of the hole-arranging portion.

[0023] In one embodiment of the present invention, the inner wall of the unit sleeve is symmetrically provided with strip grooves, the outer wall of the groove bottom of the strip groove protrudes from the outer wall of the unit sleeve and is arranged through the length direction of the unit sleeve, and the limiting convex strip is clamped in the strip groove;

[0024] The adjacent unit sleeves form a plug-in fit, and the outer wall of the strip groove of the outer wall of the unit sleeve forms a sliding fit with the inner wall of the strip groove of the adjacent unit tube.

[0025] In one embodiment of the present invention, a limiting protrusion is provided near the inner wall of the tube end of the unit sleeve, and a limiting annular groove is provided at one end of the driving screw member and a limiting annular groove is provided at the other end;

[0026] The limiting protrusion of the unit sleeve is clamped in the limiting annular groove of the adjacent driving screw member.

[0027] In one embodiment of the present invention, the cross section of the unit rod is rectangular, and the driving screw is provided with a rectangular hole for the unit rod to pass through.

[0028] In one embodiment of the present invention, one end of the outer sleeve is fixed on the seat body, one end of the driving rod is rotatably arranged on the seat body, a motor is installed on the seat body, and the output shaft of the motor is connected to one end of the driving rod.

[0029] Another object of the present invention is to provide a method for forming a telescopic rod assembly, wherein the telescopic rod assembly is the structure of the telescopic rod assembly described above;

[0030] The unit tube is formed by bending a thin plate, and two rows of holes are punched out in an array along the length direction of the thin plate, and the hole contour is a parallelogram;

[0031] A straight line limiting portion is bent along the length direction between the two rows of holes in the thin plate;

[0032] The two rows of holes in the thin plate are bent to form a semi-tubular structure and folded in half to form the unit tube.

[0033] In one embodiment of the present invention, the thin plate is bent at least four times between the two rows of holes, and the folds are along the length direction of the thin plate. The four bends form a limiting convex strip, and the cross-section of the limiting convex strip is groove-shaped.

[0034] In one embodiment of the present invention, the two sides of the thin plate are bent at least twice, and the folds are along the length direction of the thin plate. The thin plate is bent at the folded positions on both sides to form the limiting convex strips.

[0035] Another object of the present invention is to provide a selfie stick, the stick comprising the telescopic rod assembly described above;

[0036] Also includes

[0037] A chuck, the chuck being arranged at the rod end of the telescopic pipe;

[0038] A clamping piece is used for placing equipment and is arranged on the clamping head. The clamping piece and the clamping head form an angle-adjustable connection.

[0039] The present invention also aims to provide an umbrella pole device, the umbrella pole device comprising the telescopic pole assembly described above;

[0040] Also includes

[0041] Umbrella head;

[0042] Go up to the nest;

[0043] A middle rod, one end of which is connected to the umbrella head, and the other end of which is connected to the upper nest, and the middle rod is composed of the telescopic rod assembly;

[0044] A lower nest, which is sleeved on the outer circumference of the middle rod and slides along the middle rod;

[0045] A linkage assembly, arranged on the middle rod, for connecting the lower nest;

[0046] The driving rod of the middle rod rotates to implement telescopic driving of the telescopic tube, and the lower nest is linked to slide synchronously on the middle rod through the linkage assembly.

[0047] In one embodiment of the present invention, the linkage assembly includes at least one connecting rope, one end of which is fixed to the umbrella head, and the connecting rope passes through the middle of the middle rod and the other end is connected to the lower nest through a transition wheel;

[0048] The upper nest is hingedly provided with an umbrella rib, the lower nest is hingedly provided with a frame, and one end of the frame is hingedly provided with the middle section of the umbrella rib;

[0049] A reset tension spring is also arranged between the overhanging end of the umbrella rib and the frame.

[0050] Compared with the prior art, the beneficial effects of the present invention are embodied in that the driving rod in the telescopic rod assembly is composed of a plurality of groups of unit rods connected in sequence to form a telescopic fit, the telescopic pipe fitting is sleeved outside the driving rod, and the linear telescopic fit of adjacent unit tubes is realized through a linear limit portion, and the driving screw thread member is arranged on the unit rod to cooperate with the hole on the wall of the unit tube that is spirally extended along the length of the tube; this structural design avoids complicated internal thread groove processing and installation of multi-stage electric screws, simplifies the overall structure, reduces the process difficulty and precision requirements of production and manufacturing, effectively shortens the production cycle, reduces production costs, and is conducive to large-scale promotion and popularization of products.

[0051] The telescopic rod assembly drives the telescopic tube to extend and retract by driving the rod to rotate and using the driving screw to cooperate with the spirally extended hole on the unit tube. This driving method has relatively low requirements on the tube cavity space and is easier to realize the design of more telescopic rods. When pursuing a larger shooting range and higher flexibility, the needs can be met by reasonably increasing the telescopic stages, which has better scalability.

[0052] The telescopic rod assembly has a simplified structure and fewer components, which effectively reduces the weight of the entire telescopic rod. For scenes that require handheld operation, it can reduce the user's fatigue when holding the rod for a long time or adjusting the shooting angle, thereby improving the product's practicality and user experience.

[0053] Compared with the existing screw-nut driven telescopic rod, this telescopic rod assembly has obvious advantages in structural complexity, cost control, series expansion and weight optimization, and can better meet the market's urgent demand for high-performance, low-cost, lightweight telescopic rods with flexible telescopic functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a structural schematic diagram of a telescopic rod assembly in a shortened state in one embodiment of the present invention;

[0055] Figure 2 It is a structural schematic diagram of an embodiment of the present invention in which the telescopic rod assembly is in a shortened state and the outer sleeve is moved out;

[0056] Figure 3 It is a structural schematic diagram of an embodiment of the present invention in which the telescopic rod assembly is in a shortened state after the outer sleeve and the telescopic pipe are removed;

[0057] Figure 4 It is a partial structural cross-sectional view of the installation of the outer sleeve member, the telescopic pipe member and the driving rod and the base in the telescopic rod assembly in one embodiment of the present invention;

[0058] Figure 5 It is a schematic diagram of the structure of the cooperation between the driving rod and the driving screw member in the telescopic rod assembly in one embodiment of the present invention;

[0059] Figure 6 and Figure 7 Schematic diagram of the structure of a driving screw thread member in two viewing angles in one embodiment of the present invention;

[0060] Figure 8 It is a schematic structural diagram of a driving rod in an embodiment of the present invention in a shortened state;

[0061] Fig. 9 It is a structural schematic diagram of a telescopic rod assembly in an embodiment of the present invention in an extended state;

[0062] Fig.10 It is a schematic diagram of the structure of an embodiment of the present invention after the outer sleeve is removed when the outer sleeve is in an extended state;

[0063] Fig.11 It is a schematic diagram of the structure of the installation of the telescopic pipe, the driving rod and the driving screw member in one embodiment of the present invention;

[0064] Fig.12 This is a schematic diagram of the structure of a single unit tube in one embodiment of the present invention;

[0065] Fig.13 and Fig.14 Schematic diagram of the structure of a single unit sleeve in one embodiment of the present invention from two viewing angles;

[0066] Fig.15 It is a schematic cross-sectional structure diagram of the installation of a single unit sleeve and a single unit pipe in one embodiment of the present invention;

[0067] Fig.16 It is a schematic cross-sectional structure diagram of the cooperation between a single unit sleeve, a single unit pipe and a driving screw member in one embodiment of the present invention;

[0068] Fig.17 It is a schematic diagram of a process of bending a unit tube by a thin plate punching machine in one embodiment of the present invention;

[0069] Fig.18 It is a structural schematic diagram of a selfie stick in an extended state according to an embodiment of the present invention;

[0070] Fig.19 It is a schematic structural diagram of a middle rod of an umbrella rod device in an embodiment of the present invention when it is shortened;

[0071] Fig. 20 It is a structural schematic diagram of the middle rod of the umbrella pole device in one embodiment of the present invention when it is extended;

[0072] Fig.21 It is a partial structural schematic diagram of the cooperation between the middle rod, the upper nest and the lower nest of the umbrella pole device connected with the pull rope in one embodiment of the present invention;

[0073] Fig. 22 It is a schematic structural diagram of the cooperation between one end of the middle rod of the pull rope extending umbrella pole device and the umbrella head in one embodiment of the present invention;

[0074] Fig.23 It is a front view of the cooperation between the umbrella pole device and the frame in one embodiment of the present invention;

[0075] Description of Figure Numbers:

[0076] 10. driving rod; 11. unit rod;

[0077] 20. telescopic pipe fitting; 21. unit pipe; 211. hole; 212. limiting convex strip;

[0078] 30. Driving screw thread member; 31. Screw thread protrusion; 32. Limiting annular groove;

[0079] 40. outer sleeve; 41. unit sleeve; 411. strip groove; 412. limiting protrusion;

[0080] 50. Base body;

[0081] 60. Motor;

[0082] 70. Chuck;

[0083] 80. Card connector; 81. Connecting transition piece;

[0084] 100, umbrella head; 110, starting motor;

[0085] 200, upper nest; 210, umbrella ribs;

[0086] 300, medium bat;

[0087] 400, lower nest; 410, frame; 420, reset spring;

[0088] 500, connecting rope; 510, first synchronous wheel; 520, second synchronous wheel; 530, third synchronous wheel;

[0089] A, sheet; a1, first fold; a2, second fold; a3, third fold; a4, fourth fold; a5, fifth fold; a6, sixth fold; DETAILED DESCRIPTION

[0090] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0091] The illustrations provided in this embodiment are only used to illustrate the basic concept of the present invention in a schematic manner. Therefore, the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0092] It should be noted that in order to achieve multi-stage telescopic extension, the existing telescopic rods need to accurately process the thread grooves in the tube cavities of each stage of the telescopic rods, and install multi-stage electric screws inside, which makes the overall structure extremely complex. The complex structure not only increases the process difficulty and precision requirements in the manufacturing process, but also leads to an extension of the production cycle, greatly increases the production cost, and is not conducive to the large-scale promotion and popularization of the product; secondly, due to the limitations of the tube cavity space and the thread groove processing technology, this structure faces many difficulties in realizing the design of more stages of telescopic rods. As the number of stages increases, the space in the tube cavity becomes more and more cramped, the difficulty of thread groove processing increases exponentially, and the installation and coordinated work of multi-stage electric screws also become difficult to achieve. This makes it impossible for the existing telescopic rods to meet the needs by increasing the number of telescopic stages when pursuing a larger shooting range and higher flexibility; furthermore, the complex structure and more components lead to an increase in the weight of the entire telescopic rod. For telescopic rods that need to be hand-held (such as telescopic rods used in umbrellas or selfie sticks), an overly heavy telescopic rod will bring a greater burden to the user, affecting the user experience. In particular, when holding it for a long time or adjusting the shooting angle, the user is likely to feel tired, reducing the practicality of the product. Therefore, the present invention proposes a telescopic rod assembly, including: a driving rod 10, which is composed of a plurality of groups of unit rods 11 connected in sequence to form a telescopic fit; a telescopic tube 20, which is sleeved outside the driving rod 10 and is composed of a plurality of groups of unit tubes 21 connected in sequence; a linear limit portion, which is arranged on the unit tube 21, and between adjacent unit tubes 21 A linear telescopic fit is formed by the linear limiting portion; the driving screw 30 is respectively arranged on the multiple groups of unit rods 11; wherein a hole 211 is opened on the tube wall of the unit tube 21, and the hole 211 is spirally extended along the tube length direction of the unit tube 21; multiple groups of the driving screw 30 are respectively matched with multiple groups of the unit tubes 21, and a screw protrusion 31 is arranged on the outside of the driving screw 30, and the screw protrusion 31 is matched with the hole 211 of the unit tube 21, the driving rod 10 rotates, and the telescopic drive of the telescopic tube 20 is implemented through the driving screw 30.

[0093] In one embodiment, see Figure 1 and Fig. 9The core component of the telescopic rod assembly is the telescopic tube 20, which is the main telescopic component of the telescopic rod assembly. In order to require light weight and not too large wall thickness, the present invention opens a hole 211 on the tube wall of each unit tube 21 of the telescopic tube 20, and the hole 211 can form a structure similar to a spiral groove. When the driving screw 30 on each unit rod 11 of the driving rod 10 cooperates with the unit tube 21, the screw protrusion 31 on the outer wall of the driving screw 30 extends into the spiral hole 211 of the unit tube 21. When the driving rod 10 rotates, each unit tube 21 can be driven, so that each unit tube 21 of the telescopic tube 20 is synchronously telescoped, and then the entire telescopic tube 20 is telescoped. Therefore, this driving method has relatively low requirements on the tube cavity space, and it is easier to realize a more number of telescopic rod designs. When pursuing a larger shooting range and higher flexibility, the demand can be met by reasonably increasing the number of telescopic stages, and it has better expansibility.

[0094] In one embodiment, see Fig.11 and Fig.12 The telescopic pipe fitting 20 can be a thin-walled metal pipe fitting or a plastic pipe fitting. The existing internal thread groove can be replaced by opening holes 211 on each unit pipe 21 of the telescopic pipe fitting 20. In fact, the holes can be punched into the plate and then bent to form the holes. The actual production cost is lower and the production efficiency is higher. The wall thickness of each unit pipe 21 can be made thinner and the weight is lighter.

[0095] In one embodiment, see Figure 8 The driving rod 10 may also be a thin-walled metal rod or a plastic tube, so as to reduce the weight of the driving rod 10 as much as possible while ensuring the strength.

[0096] In one embodiment, adjacent unit tubes 21 are linearly telescopically matched through the linear limiting portion. When the driving rod 10 is rotated, the driving screw 30 is driven to rotate, thereby linking the unit tubes 21 to slide linearly at the driving screw 30, thereby achieving telescoping between the unit tubes 21.

[0097] In one embodiment, see Figure 1 and Fig. 9 In order to ensure the overall aesthetic appearance of the telescopic rod assembly, the telescopic rod assembly also includes an outer sleeve 40, which is composed of multiple groups of unit sleeves 41 connected in sequence. The multiple groups of unit sleeves 41 are respectively sleeved outside the unit tube 21, and the linear limiting portion constitutes a linear telescopic fit.

[0098] In one embodiment, see Fig.13 and Fig.14The unit sleeves 41 may also be thin-walled metal tubes or polymer plastic tubes, which are respectively sleeved outside the respective unit tubes 21. Adjacent unit sleeves 41 can achieve synchronous expansion and contraction with the unit tubes 21 under the linear limit of the linear limit portion.

[0099] In one embodiment, a linear limiting portion may also be provided on the outer wall of the unit sleeve 41 , so that the unit sleeve 41 can be reliably installed outside the unit tube 21 .

[0100] In one embodiment, see Fig.15 The cross-sections of the unit sleeve 41 and the unit tube 21 are both circular tubes. A necking section can be set at the tube end of the unit sleeve 41. When the unit sleeve 41 is sleeved on the outer wall of the unit tube 21, the necking section can effectively achieve clamping and fitting between the two, so that the unit sleeve 41 and the unit tube 21 form a whole.

[0101] In one embodiment, see Fig.16 The holes 211 are arranged in multiple groups at intervals in the length direction of the unit tube 21, and the holes 211 are generally strip-shaped holes and are arranged in a spiral extension along the tube wall of the unit tube 21; the screw thread protrusions 31 are generally spiral-shaped and are extended along the length direction of the outer wall of the driving screw thread member 30.

[0102] In one embodiment, the hole 211 is a non-continuous hole, which is actually a strip opening opened on the wall of the unit tube 21 and is arranged in a spiral extension. The holes 211 are arranged at intervals along the length direction of the wall of the unit tube 21. The screw protrusions 31 of the driving screw 30 are spiral and the extension pitch is consistent with the pitch between the holes 211, so that when the driving screw 30 is located on the inner wall of the unit tube 21, the screw protrusions 31 can protrude into the holes 211. When the unit rods 11 on the driving rod 10 rotate synchronously, the driving screws 30 on each unit rod 11 rotate, and then the unit tubes 21 can be linked to move synchronously, thereby realizing synchronous extension and retraction between multiple groups of unit tubes 21.

[0103] In one embodiment, see Fig.12 The linear limiting portion is composed of a limiting convex strip 212 arranged on the outer wall of the unit tube 21. The limiting convex strip 212 is arranged along the unit tube 21, and the adjacent unit tubes 21 form a plug-in fit, and the limiting convex strip 212 on the outer wall of the unit tube 21 and the inner wall of the limiting convex strip 212 of the adjacent unit tube 21 form a sliding fit.

[0104] In one embodiment, the limiting convex strips 212 are symmetrically arranged in two groups on the tube core of the unit tube 21 .

[0105] In one embodiment, see Fig.12The wall thickness of the limiting ridge 212 is consistent with the wall thickness of the unit tube 21, and it can be formed by folding the plate. The specific forming method will be described in detail below. The cross-section of the limiting ridge 212 presents a groove-shaped structure. When adjacent unit tubes 21 are plugged in, the limiting ridge 212 on the outer wall of the unit tube 21 and the inner wall of the limiting ridge 212 of the adjacent unit tube 21 form a sliding fit, so that the adjacent unit tubes 21 form a linear limiting fit.

[0106] In one embodiment, since a limiting ridge 212 is formed on the unit tube 21, the outer wall of the unit tube 21 can be divided into two parts, namely a hole-laying portion and a limiting ridge 212. The hole-laying portion and the limiting ridge 212 together constitute the unit tube 21, wherein the cross-section of the limiting ridge 212 is groove-shaped and the outer side protrudes out of the outer tube wall of the unit tube 21. Therefore, when two unit tubes 21 are plugged in, a linear limiting fit can be formed, wherein the holes 211 are arranged at intervals along the length direction of the hole-laying portion of the unit tube 21 to form an open-shaped threaded groove.

[0107] In one embodiment, see Fig.15 When the unit sleeve 41 and the unit tube 21 form a plug-in fixed enclosure, the inner wall of the unit sleeve 41 is symmetrically provided with strip grooves 411, the outer wall of the groove bottom of the strip groove 411 protrudes from the outer wall of the unit sleeve 41 and is arranged through the length direction of the unit sleeve 41, and the limiting convex strip 212 is clamped in the strip groove 411; the adjacent unit sleeves 41 form a plug-in fit, and the outer wall of the strip groove 411 of the outer wall of the unit sleeve 41 forms a sliding fit with the inner wall of the strip groove 411 of the adjacent unit tube 21.

[0108] In one embodiment, when the unit sleeve 41 is made of a metal thin-walled material, the strip groove 411 of the inner wall can be formed by bending and curving the plate. In order to reduce the production process, it can also be integrally formed by other pipe forming equipment.

[0109] In one embodiment, when the unit sleeve 41 is made of plastic material, the strip-shaped groove 411 of the inner wall can be formed as one piece through an extrusion device, which can reduce the production cost.

[0110] In one embodiment, see Fig.15 and Fig.16 In order to realize the connection between the driving screw 30 and the adjacent unit sleeve 41, a limiting protrusion 412 is provided near the inner wall of the pipe end of the unit sleeve 41, and a limiting annular groove 32 is provided at one end of the driving screw 30; the limiting protrusion 412 of the unit sleeve 41 is clamped in the limiting annular groove 32 of the adjacent driving screw 30.

[0111] In one embodiment, see Fig.15The unit sleeve 41 is a metal pipe fitting, and a limiting protrusion 412 is arranged near the inner wall of the pipe end, which can be formed by stamping equipment, so that the limiting protrusion 412 is arc-shaped and protrudes out of the inner wall of the unit sleeve 41, and the limiting protrusion 412 protrudes into the limiting annular groove 32 of the driving screw thread member 30, so as to realize the installation of the driving screw thread member 30 and the unit sleeve 41. During actual installation, the driving screw thread member 30 extends into the adjacent unit sleeve 41.

[0112] In one embodiment, the cross section of the unit rod 11 is rectangular, and the driving screw 30 is provided with a rectangular hole for the unit rod 11 to pass through.

[0113] In other embodiments, the unit rod 11 may be other polygons, such as a triangle, a pentagon, a hexagon, etc., and the hole shape on the driving screw 30 is consistent with the cross-section of the unit rod 11 .

[0114] In one embodiment, the unit rods 11 may be connected to each other in a sleeve-type plug-in manner, and limit positions are set between the rod ends of the unit rods 11 to prevent the unit rods 11 from being separated.

[0115] In one embodiment, the driving screw 30 can be fixed to the rod end of the unit rod 11, and the fixing method can be welding, bonding, clamping, etc.

[0116] In one embodiment, in order to drive the driving rod 10 to rotate, the telescopic rod assembly adopts an electric method, one end of the outer sleeve 4 is fixed on the seat body 50, and one end of the driving rod 10 is rotatably set on the seat body 50. A motor 60 is installed on the seat body 50, and the output shaft of the motor 60 is connected to one end of the driving rod 10.

[0117] In one embodiment, the output shaft of the motor 60 may be connected to one end of the driving rod 10 via a reduction gear box and a motor output shaft connector.

[0118] The following describes a method for forming the telescopic rod assembly, wherein the telescopic rod assembly is the telescopic rod assembly described above;

[0119] The unit tube 21 is formed by bending a thin plate A, and two rows of holes 211 are punched out in an array along the length direction of the thin plate A. The outline of the holes 211 is a parallelogram.

[0120] A straight line limiting portion is bent along the length direction between the two rows of holes 211 of the thin plate A;

[0121] The two rows of holes 211 of the thin plate A are bent to form a semi-tubular structure and folded in half to form the unit tube 21 .

[0122] In one embodiment, the thickness of the thin plate A is 0.30 mm-1.00 mm to form the structure of the unit tube 21 .

[0123] In a preferred embodiment, the thickness of the thin plate A is 0.5 mm, which can balance the strength, weight and production cost of the unit tube 21 formed by bending.

[0124] In one embodiment, see Fig.17 The two rows of holes 211 of the thin plate A are bent at least four times, and the folds are along the length direction of the thin plate A. The four bends form a limiting convex strip 212, and the cross-section of the limiting convex strip 212 is groove-shaped.

[0125] In one embodiment, both sides of the thin plate A are bent at least twice, and the folds are along the length direction of the thin plate A. The thin plate A is bent and located at the folded positions on both sides to form the limiting ridges 212.

[0126] When actually molding the unit tube 21, refer to Fig.17 First, a sheet A of suitable size is cut out by a shearing machine, and the sheet A is flattened. By calculating the size of the unit tube 21, the bending position and the size of the hole 211 are reasonably set, and two rows of holes 211 are punched out along the length direction of the sheet A by a punching device. Each row of holes 211 is arranged equidistantly along the length direction of the sheet A. The plate surface where the holes 211 are arranged can be regarded as the above-mentioned hole arrangement part. The hole 211 can be formed into a long parallelogram, and the width of the parallelogram should not be too large, and should be consistent with the screw thread convex part on the driving screw thread part 30. The width of the starting plate 31 is adapted. After the holes 211 are punched, the thin plate A is bent by a bending device. The two rows of holes 211 are first bent to form a first crease a1. The first crease a1 is displaced from the end position of the holes 211, and then the plate of the two rows of holes 211 is bent to form a second crease a2, and then it is bent again to form a third crease a3, and the end position of the other row of holes 211 is bent to form a fourth crease a4. The first crease a1, the second crease a2, the third crease a3 and the fourth crease a4 form a limiting convex strip 212, and its cross-section is groove-shaped.

[0127] See also Fig.17 Then, both sides of the thin plate A can be bent synchronously or separately to form a fifth fold a5, the fifth fold a5 is located at the other end of the hole 211, and then bent again to form a sixth fold a6, and the thin plate A where the hole distribution part is located is bent to form a tubular structure, so that the two sides of the thin plate A are combined to form a fine gap, thereby forming the entire unit tube 21.

[0128] After the unit tube 21 is formed, the unit tube 21 and the unit sleeve 41 are subsequently installed and fixed, and then the subsequent installation of various components is performed. The installation between the tubes is an existing mature installation method and will not be repeated here.

[0129] The following describes the application of the telescopic assembly on a selfie stick, wherein the selfie stick includes the telescopic rod assembly described above;

[0130] Also includes

[0131] A chuck 70, wherein the chuck 70 is disposed at the rod end of the telescopic tube 20;

[0132] A clamping member 80 is used for placing equipment and is arranged on the clamping head 70 . The clamping member 80 and the clamping head 70 form an angle-adjustable connection.

[0133] In one embodiment, a plug-in tube is provided on the clamp 70 , and the plug-in tube can be inserted into the tube end position of the telescopic tube 20 to fix the clamp 70 .

[0134] In one embodiment, see Fig.18 The clamping member 80 and the chuck 70 may be hingedly connected, and the clamping member 80 and the chuck 70 may be damped hinged, and the clamping member 80 may be moved by a large external force, or a fixing member may be provided at the hinge position of the clamping member 80 and the chuck 70, and when the angle is adjusted, the hinge axis is locked by the fixing member.

[0135] In one embodiment, see Fig.18 The clamping member 80 is rotatably provided with a connecting transition member 81, and the connecting transition member 81 is hinged with the clamp 70. The connecting shaft between the clamping member 80 and the connecting transition member 81 can be provided with damping to prevent the clamping member 80 from rotating at will.

[0136] The following describes the application of the telescopic assembly on an umbrella pole device, wherein the umbrella pole device includes the telescopic pole assembly described above;

[0137] Also includes

[0138] Umbrella head 100;

[0139] Upper nest 200;

[0140] A middle rod 300, one end of which is connected to the umbrella head 100, and the other end of which is connected to the upper nest 200, and the middle rod 300 is composed of the telescopic rod assembly;

[0141] A lower nest 400, wherein the lower nest 400 is sleeved on the outer periphery of the middle rod 300 and slides along the middle rod 300;

[0142] A linkage assembly, disposed on the middle rod 300 and used to connect the lower nest 400;

[0143] The driving rod 10 of the middle rod 300 rotates to implement telescopic driving of the telescopic tube 20 , and the lower nest 400 is linked to slide synchronously on the middle rod 300 through the linkage assembly.

[0144] See also Fig.19 and Fig. 20 A starting motor 110 is provided in the umbrella head 100, and the starting motor 110 is connected to the driving rod 10 in the middle rod 300 through a speed change mechanism. When the start button is pressed, the driving rod 10 rotates, and the telescopic pipe 20 of the middle rod 300 is extended. When the telescopic pipe 20 is extended, the lower nest 400 located on the middle rod 300 is linked through the linkage assembly to slide upward synchronously, thereby implementing the synchronous opening of the umbrella.

[0145] When the starter motor 110 on the starter umbrella head 100 is reset, the drive rod 10 rotates, and the unit tubes 21 of the telescopic tube 20 of the middle rod 300 are synchronously contracted until they are contracted to the length of a single unit tube 21. The lower nest 400 located on the middle rod 300 is synchronously slid downward through the linkage assembly, thereby implementing the synchronous closing of the umbrella.

[0146] In one embodiment, see Fig. 20 The linkage assembly includes at least one connecting rope 500, one end of which is fixed to the umbrella head 100, and the connecting rope 500 passes through the middle of the middle rod 300 and the other end is connected to the lower nest 400 through a transition wheel.

[0147] In one specific embodiment, see Fig.21 The upper nest 200 is inserted into the end position of the telescopic tube 20 of the middle rod 300, the transition wheel includes a first synchronous wheel 510 rotatably arranged on the end of the telescopic tube 20 of the middle rod 300, and a second synchronous wheel 520 is rotatably arranged on the lower nest 400. A third synchronous wheel 530 is arranged on the upper nest 200. One end of the connecting pull rope 500 extends from the end of the telescopic tube 20 of the middle rod 300 and abuts against the first synchronous wheel 510 and extends toward the second synchronous wheel 520, and then passes through the third synchronous wheel 530 and one end extends to the lower nest 400. The entire connection method of the connecting pull rope 500 can be connected as shown in the figure. A ball head is arranged at one end of the connecting pull rope 500, and a limited position is arranged on the lower nest 400. The limited position is a groove or other structure, which can be fixed with the ball head and can also be easily disassembled.

[0148] In one embodiment, see Fig. 22In order to prevent the lower nest 400 from spinning on the middle rod 300 , the perforated hole wall in the middle of the lower nest 400 is symmetrically provided with grooves that match the strip grooves 411 of the unit sleeve 41 .

[0149] In one embodiment, a ball head may be provided at one end of the connecting rope 500 extending out of the umbrella head 100, and a limit engaging position is provided on the umbrella head 100. The limit engaging position is a groove or other structure, which can effectively fix the ball head and facilitate disassembly.

[0150] When the umbrella is closed, see Fig.23 To ensure that the lower nest 400 can be effectively reset, the upper nest 200 is hinged with an umbrella rib 210, and the lower nest 400 is hinged with a frame 410, one end of the frame 410 is hinged with the middle section of the umbrella rib 210; a reset spring 420 is also provided between the overhanging end of the umbrella rib 210 and the frame 410, when the starter motor 110 on the umbrella head 100 is reset, the drive rod 10 rotates, and the various unit tubes 21 of the telescopic pipe 20 of the middle rod 300 are synchronously contracted, and under the action of the reset spring 420, the frame 410 can be driven by the frame 410 to slide along the middle rod 300 and reset toward the umbrella head 100.

[0151] Other skeleton structures of the umbrella are prior art and will not be described in detail here.

[0152] In summary, the telescopic rod assembly and application scenarios have obvious advantages over the existing screw-nut driven telescopic rod in terms of structural complexity, cost control, series expansion and weight optimization, and can better meet the market's urgent demand for high-performance, low-cost, lightweight telescopic rods with flexible telescopic functions.

[0153] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0154] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A telescopic rod assembly, characterized in that: include: A driving rod (10); A telescopic pipe (20) is sleeved outside the driving rod (10), and the telescopic pipe (20) is composed of a unit pipe (21); A linear limiting portion is arranged on the unit tube (21), and adjacent unit tubes (21) are connected to each other in a linear telescopic manner through the linear limiting portion; A driving screw member (30) arranged on the driving rod (10); Wherein, a hole (211) is provided on the tube wall of the unit tube (21), and the hole (211) is arranged to extend spirally along the tube length direction of the unit tube (21); The driving screw (30) cooperates with the unit tube (21); a screw protrusion (31) is provided on the outside of the driving screw (30); the screw protrusion (31) cooperates with a hole (211) of the unit tube (21); the driving rod (10) rotates, and the telescopic tube (20) is telescopically driven through the driving screw (30).

2. The telescopic rod assembly according to claim 1, characterized in that: The driving rod (10) is connected in sequence by a plurality of groups of unit rods (11) to form a telescopic fit; the driving screw member (30) is arranged on the plurality of groups of unit rods (11); The unit tubes (21) are connected in sequence in multiple groups, and the multiple groups of driving screw members (30) are respectively matched with the multiple groups of unit tubes (21).

3. The telescopic rod assembly according to claim 2, characterized in that: It also comprises an outer sleeve member (40) which is formed by connecting a plurality of groups of unit sleeves (41) in sequence, wherein the plurality of groups of unit sleeves (41) are respectively sleeved outside the unit tube (21), and the linear limiting portion forms a linear telescopic fit.

4. The telescopic rod assembly according to claim 1, 2 or 3, characterized in that: The holes (211) are arranged in a plurality of groups at intervals in the tube length direction of the unit tube (21), and the holes (211) are arranged as a whole in the form of strips and in a spiral extension along the tube wall of the unit tube (21); The screw thread protrusion (31) is spiral-shaped as a whole, and is arranged to extend along the length direction of the outer wall of the driving screw thread member (30).

5. The telescopic rod assembly according to claim 3, characterized in that: The linear limiting portion is composed of a limiting convex strip (212) arranged on the outer wall of the unit tube (21); the limiting convex strip (212) is arranged to penetrate along the unit tube (21); adjacent unit tubes (21) form a plug-in fit; and the limiting convex strip (212) on the outer wall of the unit tube (21) and the inner wall of the limiting convex strip (212) of the adjacent unit tube (21) form a sliding fit.

6. The telescopic rod assembly according to claim 5, characterized in that: The limiting convex strips (212) are located on the tube core of the unit tube (21) and are symmetrically arranged in two groups.

7. The telescopic rod assembly according to claim 6, characterized in that: The outer wall of the unit tube (21) comprises a hole-arranging portion, the hole-arranging portion and the limiting convex strip (212) are enclosed to form the unit tube (21), and the holes (211) are arranged at intervals along the length direction of the hole-arranging portion.

8. The telescopic rod assembly according to claim 6, characterized in that: The inner wall of the unit sleeve (41) is symmetrically provided with strip grooves (411), the outer wall of the groove bottom of the strip groove (411) protrudes from the outer wall of the unit sleeve (41) and is arranged to penetrate along the length direction of the unit sleeve (41), and the limiting convex strip (212) is clamped in the strip groove (411); The adjacent unit sleeves (41) form a plug-in fit, and the outer wall of the strip groove (411) on the outer wall of the unit sleeve (41) forms a sliding fit with the inner wall of the strip groove (411) of the adjacent unit tube (21).

9. The telescopic rod assembly according to claim 3, characterized in that: The unit sleeve (41) is provided with a limiting protrusion (412) near the inner wall of the tube end, and the driving screw thread member (30) is provided with a limiting annular groove at one end and a limiting annular groove (32) at the other end; The limiting protrusion (412) of the unit sleeve (41) is clamped in the limiting annular groove (32) of the adjacent driving screw thread member (30).

10. The telescopic rod assembly according to claim 2, characterized in that: The cross section of the unit rod (11) is polygonal, and the driving screw (30) is provided with a through hole adapted to the cross section of the unit rod (11).

11. The telescopic rod assembly according to claim 3, characterized in that: One end of the outer sleeve (40) is fixed to a seat body (50), one end of the drive rod (10) is rotatably arranged on the seat body (50), a motor (60) is mounted on the seat body (50), and an output shaft of the motor (60) is connected to one end of the drive rod (10).

12. A method for forming a telescopic rod assembly, characterized in that: The telescopic rod assembly is the telescopic rod assembly according to any one of claims 1 to 11; The unit tube (21) is formed by bending a thin plate (A), and two rows of holes (211) are punched out in an array along the length direction of the thin plate (A), and the outline of the holes (211) is in the shape of a parallelogram; A straight line limiting portion is bent along the length direction between the two rows of holes (211) of the thin plate (A); The plate where the two rows of holes (211) of the thin plate (A) are located is bent to form a semi-tubular structure and folded in half to form the unit tube (21).

13. The method for forming a telescopic rod assembly according to claim 12, characterized in that: The thin plate (A) is bent at least four times between the two rows of holes (211), and the folds are along the length direction of the thin plate (A). The four bends form a limiting convex strip (212), and the cross section of the limiting convex strip (212) is groove-shaped.

14. The method for forming a telescopic rod assembly according to claim 13, characterized in that: The thin plate (A) is bent at least twice at both sides, and the folds are along the length direction of the thin plate (A). The thin plate (A) is bent and located at the folded positions on both sides to form the limiting convex strips (212).

15. A selfie stick, characterized in that: The racket pole comprises the telescopic pole assembly according to any one of claims 1 to 11; Also includes A chuck (70), the chuck (70) being arranged at the rod end of the telescopic tube (20); A clamping piece (80), the clamping piece (80) is used for placing equipment and is arranged on the clamping head (70), and the clamping piece (80) and the clamping head (70) form an angle-adjustable connection.

16. An umbrella pole device, characterized in that: The umbrella pole device comprises the telescopic pole assembly according to any one of claims 1 to 11; Also includes Umbrella head (100); Upper Nest (200); a middle rod (300), one end of the middle rod (300) being connected to the umbrella head (100), and the other end of the middle rod (300) being connected to the upper nest (200), and the middle rod (300) being composed of the telescopic rod assembly; A lower nest (400), the lower nest (400) being sleeved on the outer circumference of the middle rod (300) and sliding along the middle rod (300); A linkage assembly, arranged on the middle rod (300) and used for connecting the lower nest (400); The driving rod (10) of the middle rod (300) rotates to implement telescopic driving of the telescopic tube (20), and the lower nest (400) is linked to the middle rod (300) to slide synchronously through the linkage assembly.

17. The umbrella pole device according to claim 16, characterized in that: The linkage assembly comprises at least one connecting pull rope (500), one end of the connecting pull rope (500) is fixed to the umbrella head (100), the connecting pull rope (500) passes through the middle of the middle rod (300) and the other end is connected to the lower nest (400) via a transition wheel; The upper nest (200) is hingedly provided with an umbrella rib (210), the lower nest (400) is hingedly provided with a frame (410), and one end of the frame (410) is hingedly connected to the middle section of the umbrella rib (210); A return tension spring (420) is also provided between the overhanging end of the umbrella rib (210) and the frame (410).

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