CN210203670U

CN210203670U - Pull rod

Info

Publication number: CN210203670U
Application number: CN201921239661.4U
Authority: CN
Inventors: Siyu Jin; 金思宇
Original assignee: Sichuan Deli New Material Co Ltd
Current assignee: Sichuan Deli New Material Co Ltd
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-03-31
Anticipated expiration: 2029-08-02

Abstract

A pull rod comprises a pulling part and a wheel carrier, wherein two ends of the pulling part are respectively fixed with a steering locking mechanism, and each steering locking mechanism comprises a steering piece and a locking piece; the steering piece comprises an upper fastening piece and a lower fastening piece which are fixed at the end part of the pulling part, and a steering shaft is fixed between the upper fastening piece and the lower fastening piece; the wheel carrier comprises a hollow rod and side plates fixed on two sides of the hollow rod, and the hollow rod is sleeved on the steering shaft; the locking piece includes reset spring, locking pole and fixes the locating part between two curb plates, and the locking pole passes the locating part, is equipped with the arch on the locking pole, and reset spring overlaps and establishes on the locking pole between locating part and arch, and the locking piece rotates around the rolling plane I and the rolling plane II of steering spindle, and the locking hole has been seted up to rolling plane I or/and rolling plane II. The utility model discloses have following advantage: the device can save the placing space, is not easy to damage, is convenient to operate, and saves time and labor.

Description

Pull rod

Technical Field

The utility model relates to a machine-building technical field, concretely relates to pull rod.

Background

The pull rod is a component which is fixed on the box body and is matched with the wheel carrier and the roller wheel to move the box body. When the box is used, a user drags the pull rod, and then the roller can be driven to roll, so that the whole box body is dragged to move. The traditional draw-bar box is usually provided with externally arranged wheel frames and externally arranged rollers, so that the wheel frames and the rollers are easily damaged by external force in the transportation process, and the traditional draw-bar box can occupy larger transportation space.

To above-mentioned problem, like patent number CN201810562656.0 among the prior art a draw-bar box of wheelset is accomodate in area, including box and case lid, the one end of case lid is rotated with the one end of box and is connected, when the box belongs to the state of erectting, the bottom of box is opened there is the hole of placing, it is equipped with draw-bar box wheelset to place downthehole, and draw-bar box wheelset internal rotation is connected with four groups of wheels, and four groups of wheels are controlled at the work position and are accomodate the position and switch by the mount to draw-bar box wheelset is through the chimb and the fixture block that set up on the shell and is.

Although the draw-bar box with the containing wheel set can solve the problems of overlarge occupied space and breakage of the wheel set in the transportation process of the existing draw-bar box, the draw-bar box still has the following defects; when the wheel fixing frame is used, the fixing frame is required to be pressed down no matter the wheels are retracted into the placing cavity or the wheels protrude out of the box body, however, the fixing frame is arranged at the bottom of the box, the box body is required to be tilted down by pressing down the fixing frame, so that the box bottom with the fixing frame can be placed on the side surface or the top surface for operation, and the operation is complicated; especially when the article placed in the box is overweight, the operation of side pouring box body to press the mount, waste time and energy more.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pull rod, it can not only practice thrift the installation space, and is not fragile, and convenient operation, labour saving and time saving.

The utility model aims at realizing the purpose, a pull rod comprises a pulling part and a wheel carrier, two ends of the pulling part are respectively fixed with a steering locking mechanism, and each steering locking mechanism comprises a steering piece and a locking piece; the steering piece comprises an upper fastening piece and a lower fastening piece which are fixed at the end part of the pulling part, and a steering shaft is fixed between the upper fastening piece and the lower fastening piece; the wheel carrier comprises a hollow rod and side plates fixed on two sides of the hollow rod, and the hollow rod is sleeved on the steering shaft; the locking piece includes reset spring, locking pole and fixes the locating part between two curb plates, and the locking pole passes the locating part, is equipped with the arch on the locking pole, and reset spring overlaps and establishes on the locking pole between locating part and arch, and the locking piece rotates around the rolling plane I and the rolling plane II of steering spindle, and the locking hole has been seted up to rolling plane I or/and rolling plane II.

The utility model discloses in, during the use, fix pulling portion in box one end, the gyro wheel is fixed on the wheel carrier, has seted up the locking hole when rotation face I, and the gyro wheel is outstanding when the box, and the locking hole that rotation face I was inserted to the front end of locking pole is fixed, and the gyro wheel is accomodate in box one side face, and the spring shrink that the cover was established on the locking pole, the front end of locking pole withdraw from the locking hole. When the roller is converted from protruding out of the box body to being accommodated in the side surface of one end of the box body, the rear end of the locking rod is pulled to enable the bulge to compress the reset spring, the front end of the locking rod is withdrawn from the locking hole, and then the roller can be accommodated in the side surface of the box body by rotating the wheel carrier sleeved on the steering shaft; when the roller is turned from the side surface of one end of the box body to be protruded out of the box body, the locking rod is rotated, then the locking rod is pressed into the locking hole, and the wheel frame is fixed, so that the roller is fixed.

When the locking hole has been seted up to rotation face II, the gyro wheel was accomodate in box one end side face, and the locking hole of rotation face II is inserted to the front end of locking pole, and fixed gyro wheel salient when the box, the spring shrink of establishing of cover on the locking pole, and the front end of locking pole withdraws from the locking hole. When the roller is converted from protruding out of the box body to being accommodated at the side surface of one end of the box body, the locking rod is rotated, then the locking rod is pressed into the locking hole, and the roller frame is fixed, so that the roller can be accommodated at the side surface of the box body by fixing the roller frame; when the roller is converted from being accommodated in one end side of the box body to protruding out of the box body, the rear end of the locking rod is pulled to enable the bulge to compress the reset spring, the front end of the locking rod is withdrawn from the locking hole, and then the wheel carrier sleeved on the steering shaft is rotated to enable the roller to protrude out of the box body.

Due to the adoption of the technical scheme, the utility model discloses following advantage has: the storage space can be saved, the damage is not easy, the overlarge occupation space of the wheel carrier and the idler wheel or the breakage of the wheel carrier and the idler wheel in the transportation process is avoided, and the wheel carrier and the idler wheel are stored or protruded out of the box body, so that the operation is convenient, time and labor are saved.

Drawings

The drawings of the utility model are as follows:

fig. 1 is a schematic perspective view showing a state that a roller of a drawbar protrudes from a case body according to the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a side cross-sectional schematic view of the locking member of FIG. 2;

fig. 4 is a schematic partial cross-sectional view of the tie rod of the present invention;

fig. 5 is a schematic perspective view of the pull rod of the present invention;

FIG. 6 is an enlarged schematic view at B in FIG. 5;

fig. 7 is a schematic perspective view of the pull rod of the present invention;

FIG. 8 is an enlarged schematic view at C of FIG. 7;

fig. 9 is a front view schematically illustrating a state where the roller of the drawbar of the present invention is accommodated in the case;

fig. 10 is a schematic perspective view of the drag box of the present invention with the roller of the drag rod protruding from the box.

In the figure: 1. a box body and 2. rollers; 3. a pulling part; 4. a wheel carrier; 7. an upper fastener, 8 lower fasteners, 9 steering shafts, 10 hollow rods; 11. the locking device comprises a side plate, 12 parts of a return spring, 13 parts of a locking rod, 14 parts of a limiting piece, 15 parts of a protrusion, 16 parts of a torsion spring, 17 parts of a limiting table, 18 parts of fixing holes I and 19 parts of fixing holes II and 21 parts of a locking hole, 22 parts of a support lug, 23 parts of a through hole, 24 parts of a positioning hole and 25 parts of a positioning column.

Detailed Description

The invention will be further explained with reference to the following figures and examples:

as shown in fig. 1 to 10, a tie rod comprises a pulling part 3 and a wheel carrier 4, wherein two ends of the pulling part 3 are respectively fixed with a steering locking mechanism, and each steering locking mechanism comprises a steering piece and a locking piece; the steering member comprises an upper fastening member 7 and a lower fastening member 8 fixed to the end of the pulling part 3, and a steering shaft 9 is fixed between the upper fastening member 7 and the lower fastening member 8; the wheel carrier 4 comprises a hollow rod 10 and side plates 11 fixed on two sides of the hollow rod 10, and the hollow rod 10 is sleeved on the steering shaft 9; the locking piece includes reset spring 12, locking pole 13 and fixes locating part 14 between two curb plates 11, and locking pole 13 passes locating part 14, is equipped with arch 15 on the locking pole 13, and reset spring 12 cover is established on locking pole 13 between locating part 14 and arch 15, and the locking piece rotates around turning plane I and the turning plane II of steering spindle 9, and locking hole 21 has been seted up to turning plane I or turning plane II.

The utility model discloses in, during the use, fix pulling portion 3 in box one end, gyro wheel 2 is fixed on wheel carrier 4, has seted up locking hole 21 when rotation face I, and gyro wheel 2 salient is when the box, and the locking hole 21 that rotation face I was inserted to the front end of locking pole 13 is fixed, and gyro wheel 2 is accomodate in box one side face, and the reset spring 12 shrink that the cover was established on locking pole 13, and the front end of locking pole 13 withdraws from locking hole 21. When the roller 2 is converted from protruding out of the box body to being accommodated at the side surface of one end of the box body, the rear end of the locking rod 13 is pulled to enable the bulge 15 to compress the return spring 12, the front end of the locking rod 13 is withdrawn from the locking hole 21, and then the roller 2 can be accommodated at the side surface of the box body by rotating the wheel carrier 4 sleeved on the steering shaft 9; when the roller 2 is turned to protrude from the case from the side surface of the case at one end thereof, the locking member is turned, and then the locking rod 13 is pressed into the locking hole 21, thereby fixing the roller 2 by fixing the wheel frame 4.

When the rotating surface II is provided with the locking hole 21 and the roller 2 is accommodated at one end side surface of the box body, the front end of the locking rod 13 is inserted into the locking hole 21 of the rotating surface II. When the fixed roller 2 protrudes out of the box body, the reset spring 12 sleeved on the locking rod 13 contracts, and the front end of the locking rod 13 exits from the locking hole 21. When the roller 2 is changed from protruding out of the box body to being accommodated at one side surface of the box body, the locking piece is rotated, then the locking rod 13 is pressed into the locking hole 21, and the roller can be accommodated at the side surface of the box body by fixing the wheel frame 4 and thus fixing the roller 2; when the roller 2 is turned to protrude from the box body from the side surface of one end of the box body, the rear end of the locking rod 13 is pulled to enable the bulge 15 to compress the return spring 12, the front end of the locking rod 13 is withdrawn from the locking hole 21, and then the wheel carrier 4 sleeved on the steering shaft 9 is rotated to enable the roller 2 to protrude from the box body.

When the locking hole 21 has all been seted up to rotation face I and rotation face II, no matter gyro wheel 2 salient in the box side or accomodate in the box side, locking pole 13 all can insert in the locking hole 21, makes wheel carrier 4 and gyro wheel 2 fixed.

The rotating surface i is an arc surface on the steering shaft 9 corresponding to the lock lever 13 in the state of fig. 1, and the rotating surface ii is an arc surface on the steering shaft 9 corresponding to the lock lever 13 in the state of fig. 9.

In the present embodiment, a lock hole 21 is formed in the rotation surface i of the steering shaft 9. When the roller 2 protrudes from the side of the case, the lock lever 13 is inserted into the lock hole 21.

In this embodiment, the side of the box body is provided with a receiving cavity capable of receiving the wheel frame 4 and the roller 2. The advantage that the side face of the body is provided with the containing cavity capable of containing the wheel frame 4 is that when the wheel frame 4 and the roller 2 are contained, the wheel frame 4 and the roller 2 are embedded into the side face of the box body instead of being tightly attached to the side face of the box body, so that the occupied space for containing the wheel frame 4 and the roller 2 is further reduced, and the breakage of the wheel frame and the roller is avoided.

In the present embodiment, the side plates 11 of the wheel frame 4 and the hollow bar 10 are integrally formed. The boss 15 is integrally provided on the lock lever 13 inside the stopper 14.

The upper and lower fasteners are plates, hoops or other fasteners that can secure the steering shaft 9.

Further, the steering shaft 9 is sleeved with a torsion spring 16, the upper end of the torsion spring 16 is provided with a limiting table 17 fixed in the hollow rod 10, the bottom of the limiting table 17 is provided with a fixing hole I18, the upper portion of the lower fastening piece 8 is provided with a fixing hole II 19, one end of the torsion spring 16 extends into the fixing hole I18, and the other end of the torsion spring 16 extends into the fixing hole II 19. When the wheel frame 4 and the roller 2 protrude out of the box body, the torsion spring 16 is in an extrusion distortion state; when the wheel frame 4 and the roller 2 are accommodated on the side surface of the box body, the torsion spring 16 is in an extending and non-twisting state. The torsion spring 16 has the function that after the locking rod 13 is pulled out of the steering shaft 9, the wheel carrier 4 and the roller 2 can be quickly and accurately reset from protruding out of the box body to being accommodated on the side face of the box body. In this embodiment, the stop 17 and the hollow bar 10 are integrally formed.

Further, the limiting member 14 is a limiting member or a limiting cavity. The limiting piece 14 is used for matching with the bulge 15 to compress the return spring 12, so that the locking rod 13 enters or exits the locking hole. In this embodiment, the limiting member 14 is a limiting cavity, and the limiting member can better protect the locking rod 13 and the return spring 12 compared with the limiting member, so as to prevent the foreign matter from blocking the return spring 12 or the locking rod 13, and further prolong the service life of the pull rod.

Further, the projection 15 is an annular projection integrally molded with the lock lever 13. The annular protrusion serves to uniformly limit the position of the return spring 12 on the locking rod 13, and the return spring 12 is prevented from tilting better than the protrusions 15 with other shapes.

Further, a handle is fixed to the end of the lock rod 13 outside the stopper 14. In this embodiment, the handle is integrally fixed with protrusions on two symmetrical sides of the handle, two hinge holes matched with the protrusions on the handle are formed in the rear end of the locking rod 13, and the protrusions are embedded into the hinge holes so that the handle is hinged and fixed at the rear end of the locking rod 13. The function of the handle is to facilitate pulling the locking rod 13 so that the front end of the locking rod 13 enters or exits the locking hole 21.

Further, in order to make pulling portion 3 can contract or extend, pole and two outer poles in pulling portion 3 includes the U-shaped, the both ends activity respectively of pole sets up in two outer poles in the U-shaped, has seted up two spacing holes on every outer pole at least, and the mounting hole has all been seted up at the both ends of pole in the U-shaped, and the mounting hole internal fixation has a spring, and the spring top is fixed with a pearl, and it surpasss outside spacing hole to push up the pearl, surpasss the 1/2 that pushes up the pearl that the pearl is less than outside the spacing hole.

Furthermore, the two sides of the upper part and the two sides of the lower part of the pulling part 3 are both hinged or fixed with support lugs 22, and through holes 23 are arranged on the support lugs 22. The lug 22 functions to fix the pulling portion 3 to the case side end by a fastener such as a rivet, bolt, screw, etc. passing through the through hole 23. In the present embodiment, the lugs 22 on both sides of the lower portion of the pulling portion 3 are integrally formed with the lower fastening member.

Further, in order to make the connection of the pulling portion and the lower fastener more stable. In this embodiment, set up the locating hole that has the reference column on the fastener 8 down, the locating hole is with two tip assorted of pulling portion 3, and pulling portion 3 has seted up the hole with reference column assorted.

Furthermore, the cross section of the positioning column is in a cross shape.

Claims

1. A draw bar comprising a pulling part (3) and a wheel carrier (4), characterized in that: two end parts of the pulling part (3) are respectively fixed with a steering locking mechanism, and each steering locking mechanism comprises a steering piece and a locking piece; the steering piece comprises an upper fastening piece (7) and a lower fastening piece (8) which are fixed at the end part of the pulling part (3), and a steering shaft (9) is fixed between the upper fastening piece (7) and the lower fastening piece (8); the wheel carrier (4) comprises a hollow rod (10) and side plates (11) fixed on two sides of the hollow rod (10), and the hollow rod (10) is sleeved on the steering shaft (9); the locking piece comprises a return spring (12), a locking rod (13) and a limiting part (14) fixed between two side plates (11), the locking rod (13) penetrates through the limiting part (14), a protrusion (15) is arranged on the locking rod (13), the return spring (12) is sleeved on the locking rod (13) between the limiting part (14) and the protrusion (15), the locking piece rotates around a rotating surface I and a rotating surface II of a steering shaft (9), and a locking hole (21) is formed in the rotating surface I or/and the rotating surface II.

2. The tie rod of claim 1, wherein: the steering shaft (9) is sleeved with a torsion spring (16), the upper end of the torsion spring (16) is provided with a limiting table (17) fixed in the hollow rod (10), the bottom of the limiting table (17) is provided with a fixing hole I (18), the upper portion of the lower fastener (8) is provided with a fixing hole II (19), one end of the torsion spring (16) extends into the fixing hole I (18), and the other end of the torsion spring (16) extends into the fixing hole II (19).

3. The tie rod of claim 1 or 2, wherein: the limiting piece (14) is a limiting piece or a limiting cavity.

4. The tie rod of claim 1 or 2, wherein: the protrusion (15) is an annular protrusion integrally formed with the lock lever (13).

5. A tie rod according to claim 3 wherein: the protrusion (15) is an annular protrusion integrally formed with the lock lever (13).

6. The tie rod of claim 1, 2 or 5, wherein: a handle is fixed at the end part of the locking rod (13) outside the limiting piece (14).

7. A tie rod according to claim 3 wherein: a handle is fixed at the end part of the locking rod (13) outside the limiting piece (14).

8. The tie rod of claim 4, wherein: a handle is fixed at the end part of the locking rod (13) outside the limiting piece (14).