CN215381983U

CN215381983U - Rotatable pull rod device

Info

Publication number: CN215381983U
Application number: CN202121745186.5U
Authority: CN
Inventors: 王锦
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2022-01-04
Anticipated expiration: 2031-07-29

Abstract

The utility model discloses a rotatable pull rod device, which relates to the field of pull rods and aims to solve the problem that a rotary pull rod in the prior art is lack of a positioning device.A positioning hole is formed in a connector, and a first compression spring, a telescopic plate and a telescopic head are arranged in the rotary rod; the wedge block is arranged in the rotating rod, the unlocking key is connected with the connecting rod through the U-shaped rod, the wedge block can slide along the rotating rod direction by pressing the unlocking key, the telescopic plate is extruded to enable the telescopic head to be separated from the positioning hole, so that the limiting is relieved, and the rotating rod is rotated; the limiting mechanism can fix the position of the wedge block when the limiting of the telescopic head is released, the rotating connection between the rotating rod and the fixed rod is kept, the unlocking key does not need to be pressed for a long time, and the finger ache is avoided.

Description

Rotatable pull rod device

Technical Field

The utility model relates to the field of pull rods, in particular to a rotatable pull rod device.

Background

A trolley case refers to a luggage case having a trolley and rollers. It is widely used because of its convenient use. Meanwhile, the draw-bar box is also provided with a draw bar which is divided into a single-tube draw bar and a double-tube draw bar, and the tube of the draw bar is divided into a square tube and a round tube, so that the draw-bar box is convenient to drag when walking, and the burden is greatly reduced.

Traditional cloth case, PC case, aluminium case, pet case and toolbox etc. all are equipped with a set of pull rod, can pull the pull rod and make the case roll subaerial through the wheel of bottom installation to need not lift the case off ground and can remove, very big make things convenient for people's trip.

The pull rod among the prior art can realize the rotation between the two poles of the earth telescopic links, and the angle is about 0-45, when pulling article uphill and downhill in the real scene, because the telescopic link has rotation function but lacks limit function, so the atress is unstable, the oscillatorily of case can appear in the walking in-process, not only can cause the wearing and tearing of article in the case, still can make to pull the people tired more, and the case that sways can cause the grab handle to rotate in pulling the staff, easily grinds the palm that pulls the people.

SUMMERY OF THE UTILITY MODEL

In view of the problems in the prior art, the utility model discloses a rotatable pull rod device, which adopts the technical scheme that the rotatable pull rod device comprises a fixed rod, a connector and a rotating rod, wherein the fixed rod is connected with the connector, the rotating rod is hinged with the connector, a grab handle is arranged at the free end of the rotating rod, a positioning hole is formed in the connector, the rotating rod is a hollow rod, the inner wall of the rotating rod is connected with a telescopic rod through a connecting plate, the telescopic plates can be fixed in the rotating rod through the connecting plate, two groups of telescopic rods are arranged on two sides of the connecting plate, the end parts of the telescopic rods are provided with telescopic plates, a first compression spring is sleeved on each telescopic rod, a telescopic head is arranged on each telescopic plate, telescopic holes are formed in the side wall of the rotating rod, the telescopic holes and the telescopic heads are corresponding in position and matched in size, and the telescopic heads pass through the telescopic holes to enter the positioning holes, can realize the location between dead lever and the bull stick, prevent to take place to rotate between the two, bull stick inner wall sliding connection has the wedge, the inclined plane of wedge with expansion plate sliding connection, the wedge slides to the connector direction along the bull stick, can extrude the expansion plate and make the flexible head return, and the telescopic link can prevent first compression spring to wedge slip direction bending when the wedge extrudees the expansion plate, sliding connection has the unlocking key on the grab handle, the wedge passes through U type pole and connecting rod connection the unlocking key, the slip of accessible unlocking key control wedge, the unlocking key with the second compression spring is equipped with to the pressure between the grab handle, and second compression spring is favorable to the reseing of unlocking key, U type pole with there is stop gear between the bull stick, can confirm the position of U type pole.

As a preferred technical scheme of the present invention, two ends of the connector are circular plates, the centers of the two circular plates are connected through a rotating shaft, the number of the positioning holes is multiple, the positioning holes are distributed on the circular plates in an annular array with the center of the circular plate as a center, so that the positioning at multiple different angles can be realized, the fixed rod is connected with the inner sides of the circular plates, the rotating rod is connected with the rotating shaft, and the rotating rod can rotate around the rotating shaft, so that the relative rotation between the fixed rod and the rotating rod can be realized.

As a preferable technical scheme of the utility model, the inner wall of the rotating rod is provided with a sliding groove extending along the rotating rod, the wedge-shaped block is connected in the sliding groove in a sliding manner, the sliding groove is arranged to be capable of moving directionally when the wedge-shaped block moves, and the inclined state when the expansion plate is extruded can be avoided.

As a preferable technical scheme of the utility model, two ends of the U-shaped rod are connected with the two wedge-shaped blocks, and the middle part of the U-shaped rod is connected with the unlocking key through a connecting rod, so that the two wedge-shaped blocks can move synchronously.

As a preferable technical solution of the present invention, the grip is provided with a key groove, the unlocking key is slidably connected in the key groove, the second compression spring is in the key groove, and the key groove can accommodate the unlocking key and provide a space for installing the second compression spring.

As a preferred technical scheme of the utility model, the limiting mechanism comprises an elastic sheet and a limiting rod, one end of the elastic sheet is connected with the side wall of the inner ring of the U-shaped rod, the limiting rod is arranged at the free end of the elastic sheet, the end part of the limiting rod is a spherical end, a limiting hole which corresponds to the limiting rod in position and is matched with the limiting rod in size is formed in the side wall of the rotating rod, the elastic sheet is made of polycarbonate, when the limiting rod props against the inner wall of the rotating rod, the elastic sheet deforms, and when the limiting rod corresponds to the limiting hole in position, the elastic sheet resets.

The utility model has the beneficial effects that: according to the utility model, the positioning hole is formed in the connector, the first compression spring, the expansion plate and the expansion head are arranged in the rotating rod, the expansion plate and the expansion head are ejected out by the first compression spring, so that the expansion head penetrates through the expansion hole to enter the positioning hole, the limit of the fixed rod and the rotating rod can be realized, and the luggage case is prevented from shaking up and down in the walking process; the wedge block is arranged in the rotating rod, the unlocking key is connected with the connecting rod through the U-shaped rod, the wedge block can slide along the rotating rod direction by pressing the unlocking key, the telescopic plate is extruded to enable the telescopic head to be separated from the positioning hole, so that the limiting is relieved, and the rotating rod is rotated; the limiting mechanism can fix the position of the wedge block when the limiting of the telescopic head is released, the rotating connection between the rotating rod and the fixed rod is kept, the unlocking key does not need to be pressed for a long time, and the finger ache is avoided.

Furthermore, stop gear adopts flexure strip, gag lever post, when the flexible head is in the locating hole, the gag lever post top is at the bull stick inner wall, the flexure strip is in elastic deformation state, when pressing the unlocking key messenger gag lever post and spacing hole position when corresponding, the flexure strip resets, the gag lever post gets into spacing hole, carry on spacingly to U type pole, only need press the bull stick into when relieving spacing, U type pole resets under first compression spring and second compression spring effect, easy and simple to handle, spacing stability, simple structure.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the rotating rod of the present invention;

FIG. 3 is a schematic structural view of the non-limit state of the limit mechanism of the present invention;

fig. 4 is a schematic structural view of the limiting state of the limiting mechanism of the present invention.

In the figure: the device comprises a fixing rod 1, a connector 2, a rotating rod 3, an unlocking key 4, a telescopic head 5, a telescopic plate 6, a first compression spring 7, a telescopic rod 8, a wedge block 9, a U-shaped rod 10, a connecting rod 11, a second compression spring 12 and an elastic sheet 13.

Detailed Description

Example 1

As shown in fig. 1 to 4, the utility model discloses a rotatable pull rod device, which adopts the technical scheme that the rotatable pull rod device comprises a fixed rod 1, a connector 2 and a rotating rod 3, wherein the fixed rod 1 is connected with the connector 2, the rotating rod 3 is hinged with the connector 2, a grab handle is arranged at the free end of the rotating rod 3, a positioning hole is formed in the connector 2, the rotating rod 3 is a hollow rod, the inner wall of the rotating rod is connected with a telescopic rod 8 through a connecting plate, two groups of telescopic rods 8 are arranged on two sides of the connecting plate, a telescopic plate 6 is arranged at the end part of each telescopic rod 8, a first compression spring 7 is sleeved on each telescopic rod 8, a telescopic head 5 is arranged on each telescopic plate 6, telescopic holes are formed in the side wall of the rotating rod 3, the telescopic holes, the telescopic heads 5 and the positioning holes are corresponding in position and matched in size, and under the action of the first compression springs 7, the telescopic rod 8 is in a telescopic state, the telescopic head 5 on the telescopic plate 6 penetrates through a telescopic hole to be inserted into the positioning hole to realize limiting, the inner wall of the rotating rod 3 is slidably connected with a wedge block 9, the inclined surface of the wedge block 9 is slidably connected with the telescopic plate 6, the grab handle is slidably connected with an unlocking key 4, the wedge block 9 is connected with a U-shaped rod 10 and a connecting rod 11, the connecting rod 11 penetrates through the grab handle to be connected with the unlocking key 4, the unlocking key 4 is pressed, the unlocking key 4 can enable the wedge block 9 to slide along the rotating rod 3 through the connecting rod 11 and the U-shaped rod 10, the telescopic plate 6 is extruded to compress a first compression spring 7, the telescopic head 5 is separated from the positioning hole to release limiting, a second compression spring 12 is pressed between the unlocking key 4 and the grab handle to reset the unlocking key 4, a limiting mechanism is arranged between the U-shaped rod 10 and the rotating rod 3, and can limit the position of the U-shaped rod 10 after the unlocking key is pressed, when the rotating relationship between the fixed lever 1 and the rotating lever 3 needs to be maintained, the unlocking key 4 does not need to be pressed for a long time.

As a preferred technical scheme of the present invention, two ends of the connector 2 are circular plates, the centers of the two circular plates are connected through a rotating shaft, the number of the positioning holes is 12, the circular plates are distributed on the circular plates in an annular array with the centers of the circular plates as centers, the fixed rod 1 is connected with the inner sides of the circular plates, the rotating rod 3 is connected with the rotating shaft, the rotating rod 3 is rotated, and the rotating rod 3 rotates around the rotating shaft, so that the rotating connection between the two can be realized.

As a preferred technical solution of the present invention, the inner wall of the rotating rod 3 is provided with a sliding slot extending along the rotating rod 3, the wedge-shaped block 9 is slidably connected in the sliding slot, and sliding along the sliding slot not only facilitates controlling a sliding track of the wedge-shaped block 9, but also prevents deviation in the extrusion process.

As a preferred technical solution of the present invention, two ends of the U-shaped rod 10 are connected to the two wedge-shaped blocks 9, and the middle of the U-shaped rod 10 is connected to the unlocking key 4 through a connecting rod 11.

As a preferable technical solution of the present invention, the grip is provided with a key groove, the unlocking key 4 is slidably connected in the key groove, the second compression spring 12 is in the key groove, and the key groove can accommodate the unlocking key 4 and the second compression spring 12.

As a preferred technical scheme of the utility model, the limiting mechanism comprises an elastic sheet 13 and a limiting rod, one end of the elastic sheet 13 is connected with the side wall of the inner ring of the U-shaped rod 10, the limiting rod is arranged at the free end of the elastic sheet 13, the end part of the limiting rod is a spherical end, and a limiting hole which corresponds to the limiting rod in position and is matched with the limiting rod in size is formed in the side wall of the rotating rod 3.

The working principle of the utility model is as follows: when an included angle between the fixed rod 1 and the rotating rod 3 needs to be adjusted, the unlocking key 4 is pressed into the key groove, the second compression spring 12 is compressed, the unlocking key 4 enables the wedge block 9 to slide along the sliding groove through the connecting rod 11 and the U-shaped rod 10, the inclined surface of the wedge block 9 extrudes the telescopic plate 6 to enable the telescopic rod 8 to contract, the first compression spring 7 is compressed, the telescopic head 5 is separated from the positioning hole of the connector 2, the limit between the fixed rod 1 and the rotating rod 3 is released, meanwhile, in the moving process of the U-shaped rod 10, when the limiting rod corresponds to the limiting hole in position, the elastic deformation of the elastic piece 13 is recovered, the limiting rod enters the limiting hole, and the U-shaped rod 10 is limited; the rotating rod 3 is rotated, after the rotating rod is adjusted to a proper angle, a limiting rod is pressed from the outside of the rotating rod 3, the elastic sheet 13 is elastically deformed, when the spherical end is contacted with a limiting hole, under the action of the first compression spring 7 and the second compression spring 12, the unlocking key 4, the connecting rod 11, the U-shaped rod 10 and the wedge-shaped block 9 move leftwards, the limiting rod slides along the inner wall of the rotating rod 3, the spherical end is extruded by the side wall of the limiting hole, the limiting rod enters the rotating rod 3, the telescopic head 5 and the telescopic plate 6 slide towards two sides under the action of the first compression spring 7, the telescopic rod 8 extends, the telescopic head 5 penetrates through the telescopic hole to enter the positioning hole of the connector 2, and the limiting between the fixed rod 1 and the rotating rod 3 is completed.

The mechanical connection according to the utility model is a conventional means used by the skilled person and can be suggested by limited trials and is common general knowledge.

Components not described in detail herein are prior art.

Although the present invention has been described in detail with reference to the specific embodiments, the present invention is not limited to the above embodiments, and various changes and modifications without inventive changes may be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims

1. The utility model provides a rotatable draw-bar device, includes dead lever (1), connector (2) and bull stick (3), dead lever (1) with connector (2) link to each other, bull stick (3) with connector (2) are articulated, bull stick (3) free end is equipped with grab handle, its characterized in that: there is the locating hole on connector (2), bull stick (3) are hollow pole, and the inner wall is connected with telescopic link (8) through the connecting plate, telescopic link (8) have two sets ofly and set up the connecting plate both sides, telescopic link (8) tip is equipped with expansion plate (6), the cover is equipped with first compression spring (7) on telescopic link (8), telescopic head (5) are equipped with on expansion plate (6), it has the telescopic hole to open on bull stick (3) lateral wall, the telescopic hole the telescopic head (5), the locating hole position is corresponding, size phase-match, bull stick (3) inner wall sliding connection has wedge (9), the inclined plane of wedge (9) with expansion plate (6) sliding connection, sliding connection has unlocking key (4) on the grab handle, wedge (9) are connected through U type pole (10) and connecting rod (11) unlocking key (4), a second compression spring (12) is pressed between the unlocking key (4) and the grab handle, and a limiting mechanism is arranged between the U-shaped rod (10) and the rotating rod (3).

2. A rotatable tie bar apparatus as set forth in claim 1, wherein: the connector is characterized in that two ends of the connector (2) are circular plates, the circle centers of the circular plates are connected through a rotating shaft, the positioning holes are multiple, the circle centers of the circular plates are distributed on the circular plates in an annular array mode, the circle centers of the circular plates are used as centers, the fixed rods (1) are connected with the inner sides of the circular plates, and the rotating rods (3) are connected with the rotating shaft in a connecting mode.

3. A rotatable tie bar apparatus as set forth in claim 1, wherein: the inner wall of the rotating rod (3) is provided with a sliding groove extending along the rotating rod (3), and the wedge-shaped block (9) is in sliding connection in the sliding groove.

4. A rotatable tie bar apparatus as set forth in claim 1, wherein: two wedge blocks (9) are connected at the two ends of the U-shaped rod (10), and the middle part of the U-shaped rod (10) is connected with the unlocking key (4) through a connecting rod (11).

5. A rotatable tie bar apparatus as set forth in claim 1, wherein: the grab handle is provided with a key groove, the unlocking key (4) is in sliding connection in the key groove, and the second compression spring (12) is arranged in the key groove.

6. A rotatable tie bar apparatus as set forth in claim 1, wherein: the limiting mechanism comprises an elastic sheet (13) and a limiting rod, one end of the elastic sheet (13) is connected with the inner ring side wall of the U-shaped rod (10), the limiting rod is arranged at the free end of the elastic sheet (13), the end part of the limiting rod is a spherical end, and a limiting hole which corresponds to the limiting rod in position and is matched with the limiting rod in size is formed in the side wall of the rotating rod (3).