CN219165841U - Double-button wide pull rod - Google Patents

Abstract

The utility model discloses a double-button wide pull rod, which comprises two telescopic pull rods arranged in parallel, wherein each pull rod comprises at least two tubes nested layer by layer and a locking mechanism positioned in the tubes for realizing expansion and position locking between the tubes; one end of the pull rod is connected with a connecting piece, and a handle is connected between the two connecting pieces; the locking mechanism is controlled by a control button assembly, the control button assembly comprises a button arranged on a connecting piece and a linkage piece matched with the button, and the linkage piece pushes a control rod of the locking mechanism, so that the locking mechanism is unlocked, and the pipes can slide in a telescopic manner; according to the utility model, each pull rod corresponds to one control button, the telescopic operation is independent, the control distance is shortened, the telescopic control effect is better, the volume and weight inclusion of a bearing object are stronger, the structural strength is high, and the service life is long.

Description

Double-button wide pull rod

Technical Field

The utility model relates to the technical field of pull rods, in particular to a wide pull rod with double keys.

Background

The pull rod is used as an auxiliary tool convenient for pushing and pulling, and has wide application in the field of short-distance transportation such as bags and carts. In recent years, a pull rod fitting called a "wide pull rod" is increasingly emerging. The wide pull rod, as the name implies, is that the width of the cross rod connecting two upright rods is slightly larger than that of the combined box body, car body or the same. Compared with the traditional pull rod, the pull rod has the advantages that the occupied space is small, the pull rod is arranged on two sides of a vehicle body or a box body, the stressed gravity center moves forward, the labor is saved, the direction of the vehicle body or the box body is easy to control, and the phenomenon of turning over of the traditional pull rod is avoided. The greater the volume of the load, the more significant the advantage of such a tie rod. At the same time, the wide tie rod faces new problems. The larger the volume of the load is, the wider the width of the pull rod cross rod is, and when the conventional telescopic button is arranged on the pull rod cross rod, the control effect is poorer as the distance is longer.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide the wide pull rod with double keys, which has high structural strength, is convenient to push and pull out, has long service life and can effectively avoid the worse the telescopic control effect of the pull rod is.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the double-button wide pull rod comprises two telescopic pull rods which are arranged in parallel, wherein each pull rod comprises at least two tubes which are nested layer by layer, and a locking mechanism which is positioned in the tubes and used for realizing expansion and position locking between the tubes; one end of the pull rod is connected with a connecting piece, and a handle is connected between the two connecting pieces; the locking mechanism is controlled by a control button assembly, the control button assembly comprises a button arranged on a connecting piece and a linkage piece matched with the button, and the linkage piece pushes a control rod of the locking mechanism, so that the locking mechanism is unlocked, and the pipes can slide in a telescopic manner.

Preferably, a plurality of positioning holes are distributed on the side wall of the pipe at intervals, the locking mechanism comprises a bolt matched with the locking mechanism and a reset spring, and when the bolt is inserted into the positioning holes to realize locking, the control rod pushes the linkage piece and the button to reset under the action of the reset spring. Further, the number and position distribution of the positioning holes on different pipes are adjusted according to actual needs by those skilled in the art. The utility model relates to a pull rod, a telescopic pull rod and a wide pull rod, wherein the pull rod is characterized in that: commonly understood are pull rod fittings for hand-held or hand-pulled use with products such as "pull rod boxes", "luggage cases", "carts" and the like. The locking principle of the locking mechanism is identical or equivalent to that of the telescopic pull rod in the prior art, and the locking mechanism belongs to the technical field of the locking mechanism and can be solved by a person skilled in the art according to the conventional technology in the field. And the locking principle of the locking mechanism is not the protection focus of the present utility model, and the internal structure and principle of the locking mechanism will not be further described herein.

Preferably, the connecting piece or the handle is provided with a bending part, and the bending part enables the central cross section of the frame body formed by the pull rod, the connecting piece and the handle not to be a horizontal plane. On the other hand, the central cross section of the frame body formed by the pull rod, the connecting piece and the handle is a horizontal plane under the condition that no bending part exists. When a user lifts the frame assembly and the carrier attached to the assembly through the handle, the force of the hand and the gravity direction of the frame and the carrier attached to the frame can be on the same horizontal plane as much as possible, and the hand is more labor-saving than other situations without a bending part.

Preferably, the bending part arranged on the connecting piece is provided with reinforcing ribs at the side of the bending inner angle.

Preferably, the two pipes comprise a sub pipe and a main pipe, the sub pipe is nested in the main pipe, and the pull rod is provided with a mounting piece for being attached to the bearing object.

Preferably, the connecting piece is connected with one end of the secondary pipe, the mounting piece comprises a first mounting piece arranged at the top of the primary pipe, a first spacing layer is arranged at the top of the first mounting piece, the first spacing layer is provided with a pipe orifice, and the pipe orifice is smaller than the cross section of the outer side of the primary pipe but can allow the secondary pipe to slide up and down; the connecting piece is close to the outer side of one end of the sub-pipe, and is provided with a limiting protrusion which is in contact with the first spacing layer.

Preferably, a second mounting piece is mounted at the bottom of the telescopic pull rod, and the second mounting piece comprises a second spacer layer which is arranged on the end face of the bottom of the telescopic pull rod in a cushioning mode.

Preferably, the side wall of the connecting piece is provided with a button hole, and the button hole is communicated with the inside of the connecting piece; the button is provided with an operation part extending out of the button hole, a driving part hidden in the connecting piece and a holding part preventing the button from being separated from the button hole; the button is hinged with the connecting piece, and the operating part can rotate around the hinged part and transmit acting force to the linkage piece through the driving part.

Preferably, the side wall of the connecting piece is provided with a button hole, and the button hole is communicated with the inside of the connecting piece; the button is provided with an operation part extending out of the button hole, a driving part hidden in the connecting piece and a holding part preventing the button from being separated from the button hole; the button is inserted in the key groove in a sliding way, one side of the linkage piece, which faces the button, is provided with an inclined plane, and the driving part is in sliding fit transmission with the inclined plane.

Preferably, the handle is sleeved with a sponge sleeve.

The utility model relates to a pull rod, a telescopic pull rod and a wide pull rod, wherein the pull rod is characterized in that: commonly understood are pull rod fittings for hand-held or hand-pulled use with products such as "pull rod boxes", "luggage cases", "carts" and the like.

Compared with the prior art, the utility model has the advantages that: 1) The pull rod can be arranged at two sides of the bearing object through the mounting piece, the stressed gravity center moves forward, labor is saved, the direction of the bearing object is easy to control, and the risk of turning over is reduced; 2) Each pull rod corresponds to a control button, the extension is independent, the control distance is shortened, and the extension control effect is better; 3) The structure is simple, the disassembly and the assembly are convenient, and the replacement of the damaged parts is easy; 4) The structure intensity is high, the inclusion degree of the volume and the weight of the bearing object is strong, and the service life is long.

Drawings

FIG. 1 is a front view of embodiment 1 of the present utility model (the first mount and the second mount are not shown);

FIG. 2 is a schematic diagram of the internal structure of embodiment 1 of the present utility model;

FIG. 3 is an enlarged view of the portion A of example 1 of the present utility model;

FIG. 4 is a schematic view showing the internal structure of embodiment 2 of the present utility model;

FIG. 5 is an enlarged view of part B of embodiment 2 of the present utility model;

FIG. 6 is a side view of a connector according to embodiment 2 of the present utility model;

FIG. 7 is a perspective view of a first mount of the present utility model;

FIG. 8 is a perspective view of a second mount of the present utility model;

the specific embodiment is as follows:

the principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model. In the description, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, merely for convenience in describing the present patent and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present patent.

Example 1: as shown in fig. 1, 2, 3, 7 and 8, embodiment 1 of the present utility model discloses a dual-key pull rod, which comprises two telescopic pull rods arranged in parallel, a connecting piece 2 connected to the telescopic pull rods, and a handle 1 connected between the two connecting pieces; in some embodiments, the connecting piece 2 and the handle 1, the connecting piece 2 and the telescopic pull rod can be integrally formed; in view of convenience in processing and installation, this embodiment 1 preferably adopts a scheme in which the telescopic link, the handle 1, and the connecting member 2 are separate components. The telescopic pull rod comprises at least two tubes nested layer by layer and a locking mechanism 9 which is positioned in the tubes and used for realizing the expansion and the position locking between the tubes; the locking mechanism 9 is controlled by a control button assembly, the control button assembly comprises a button 3 arranged on a connecting piece and a linkage piece 4 matched with the button, and the linkage piece 4 pushes a control rod 91 of the locking mechanism 9, so that the locking mechanism 9 is unlocked, and the pipes can slide in a telescopic manner.

The utility model relates to a pull rod, a telescopic pull rod and a wide pull rod, wherein the pull rod is characterized in that: commonly understood are pull rod fittings for hand-held or hand-pulled use with products such as "pull rod boxes", "luggage cases", "carts" and the like. The locking principle of the locking mechanism is identical or equivalent to that of the telescopic pull rod in the prior art, and the locking mechanism belongs to the technical field of the locking mechanism and can be solved by a person skilled in the art according to the conventional technology in the field.

Further, embodiment 1 discloses a pull rod telescoping scheme. The two pipes comprise a sub pipe 5 and a main pipe 6 nested in the sub pipe 5. The side walls of the sub-tube 5 and the main tube 6 are provided with a plurality of positioning holes 61 at intervals, and the locking mechanism 9 is encapsulated and fixed in the sub-tube 5 and comprises a bolt 92 matched with the positioning holes 61 and a reset spring (not shown in the figure). The latch 92 can perform reciprocating telescopic movement under the action of a return spring, and when it is extended and simultaneously snapped into the positioning hole 61 of the parent-child tube, the position between the parent-child tubes is limited, thereby achieving locking. When the locking device is simultaneously withdrawn from the positioning hole 61 of the main pipe 6 or from the positioning holes 61 of the sub pipe 5 and the main pipe 6, the locking is realized, the position between the sub pipe and the main pipe is not limited, the sub pipe 5 can slide up and down in the main pipe 6, and when the sub pipe 5 slides to the next positioning hole 61 of the main pipe 6 with the bolt 92, the bolt 92 automatically pops up under the action of a reset spring and is simultaneously clamped into the positioning hole 61 of the sub pipe and the main pipe, so that the locking is realized.

As shown in the drawing of embodiment 1, the latch 92 reciprocates in the radial direction of the sub-tube 5, so the lock mechanism 9 further includes a conversion member, not shown, for converting the axial reciprocation of the lever 91 in the sub-tube 5 into the radial reciprocation of the latch 92.

The side wall of the connecting piece 2 is provided with a button hole 21, and the button hole 21 is communicated with the inside of the connecting piece 2. The button 3 is slidably inserted into the button hole 21, and is provided with an operation part 31 extending out of the button hole 21, a driving part 32 hidden in the connector 2, and a traction part 33; the traction part 33 is used for restraining the button 3 from being separated from the button hole 21, so that the button 3 is prevented from falling off, and the mounting structure of the button 3 is prevented from loosening, so that the appearance is not attractive. The operation unit 31, the driving unit 32, and the pulling unit 33 may be separate members, and may be fixedly connected to the button 3, or may be integrally formed with the button 3. The traction portion 33 may be held by means of elastic connection of the button 3 and the inner wall of the connector 2 or interference limitation, and the present embodiment 1 adopts interference limitation scheme.

The connecting piece 2 and the handle of the embodiment 1 have no bending parts in the axial direction of the connecting piece 2, namely the connecting piece 2, the telescopic pull rod and the handle 1 are positioned on the same horizontal plane, and the whole is attractive and elegant. The handle 1 can also be used as a handle when the pull rod is mounted on a load. On the basis, the acting force of the hand and the gravity direction of the frame body and the frame body attached carrier can be on the same horizontal plane as much as possible, and the hand is more labor-saving than other cases with bending parts.

Further, the handle 1 is sleeved with a sponge sleeve 11. The existing designed handles generally adopt metal pipes, have smooth surfaces and harder textures, are easy to sweat at the palm when held, and have poor hand holding feel when slid or separated at the palm. For this reason, in this embodiment 1, the handle 1 is sleeved with the sponge sleeve 11 for increasing friction and improving comfort of hand holding.

The telescopic pull rod is also provided with a mounting piece which is used for being fixedly connected with an article or a box body to be carried. The tie rod of embodiment 1 may be applied not only to a trunk but also to a trailer, a movable refrigerator, a sound box, or the like. The number and the structure of the mounting pieces can be adaptively adjusted according to different loads.

Further, this embodiment 1 discloses a mounting scheme in which a second mounting member 8 is mounted on the bottom of the telescopic pull rod, and the second mounting member 8 includes a second spacer layer 81 that is padded on the bottom end surface of the telescopic pull rod. The second spacer layer 81 is used for wrapping the bottom pipe orifice of the pull rod, and has attractive and protective effects on the pipe orifice.

Further, the connector further comprises a first mounting piece 7, when the connector 2 is connected with the sub pipe 5, the first mounting piece 7 is mounted on the top of the main pipe 6, a first spacer layer 71 is arranged on the top of the first mounting piece 7, the first spacer layer 71 is provided with a first spacer layer pipe orifice 72, and the first spacer layer pipe orifice 72 is smaller than the cross section of the outer side of the main pipe but can allow the sub pipe 5 to slide up and down; the outer side of one end of the connecting piece 2, which is close to the sub-tube 5, is provided with a limiting protrusion 22 which is abutted against the first spacing layer 71. The first spacer layer 71 is in interference fit with the limiting boss 22, the pipe orifice at the top of the main pipe 6 is attractive in appearance and protective, meanwhile, the first mounting piece 7 is hung at the top end of the main pipe 6 by the first spacer layer 71, the sub pipe 5 is not blocked from being pulled out of the main pipe 6, and the whole structure is simple.

Further, the link 4 is mounted inside the link 2 and is linked with the driving part 33. In some embodiments, the linkage 4 may be coupled to the drive portion 33 by direct or indirect contact. In this embodiment 1, a direct contact technical solution is adopted, that is, a slant or a slant rail is provided on the side of the linkage 4 facing the button, and the driving part 33 is slidingly engaged with the slant or slant rail. The specification and drawings disclose an inclined plane scheme, wherein when the button 3 slides in the key slot 21, the driving part 33 is driven to be in sliding fit with the inclined plane 41, so that the up-and-down movement of the linkage 4 is realized. Further, the linkage 4 drives the control lever 91 to reciprocate up and down. Further, the sub-pipe 5 and the connecting piece 2 are fixedly connected through the two sides by using blind rivets, so that the structure is stable. The inside of the linkage piece 4 is hollow, and the blind rivet penetrates through the inside of the linkage piece 4 to play roles in installation and positioning and further controlling the pressing amplitude of the operation part 31, so that the operation part 31 is prevented from being excessively pressed, and the reset mechanism of the locking mechanism is damaged.

The telescopic principle of the utility model is that the operation part 31 is pressed and is driven by the driving part 33, so that the linkage piece 4 moves downwards to drive the control rod 91 to move downwards, the bolt 92 retracts from the positioning hole 61 of the main pipe 6 under the action of the reset spring and the conversion piece, the release of the telescopic pull rod by the locking mechanism 9 is realized, and the sub pipe 5 can slide in the main pipe 6; when the operating part 31 is released, after the sub-pipe 5 slides to a proper height, the bolt 92 is clamped into the other positioning hole 61 of the main pipe 6 under the action of the reset spring, the locking mechanism is automatically reset and locked, and when the locking is carried out, the switching part pushes the control rod 91 to ascend, the linkage part 4 is lifted and moved upwards along with the locking, and the operating part 31 is reset. The structure and principle of the locking mechanism 9 are well known to those skilled in the art and will not be described in detail here. Further, the number and position distribution of the positioning holes 61 on different pipes can be adjusted according to actual needs by those skilled in the art. In some embodiments, the number of tubes of the telescoping pull rod may be 3, and the number and positions of the latch 92 and return spring may be adjusted accordingly.

Example 2: as shown in fig. 4 to 8, the present embodiment 2 is different from embodiment 1 mainly in that the connector 2 is different in design from the push button 3. As shown in the figure, the connecting piece 2 of embodiment 2 includes a bending portion 24, the bending portion 24 makes the center line of the cross section of the front and the rear ends of the connecting piece 2 form an included angle, and the center cross section of the frame body formed by the pull rod, the connecting piece 2 and the handle 1 is not a horizontal plane, that is, the handle 1 of the pull rod forms a relative inclination angle with respect to the pull rod. The user is used to pull the draw-bar box obliquely, and the box body inclines relative to the ground, so that the user needs to share part of the gravity of the box body, and the pulling mode is laborious. When the inclined included angle is formed between the pull rod handle 1 and the pull rod, the pull rod accords with the pulling habit of a user, and meanwhile, the pull rod box body is kept vertical to the ground, so that the pull rod box body is more labor-saving compared with the box body.

Further, since the connecting member 2 is generally made of plastic, under the condition of having an inclined included angle, stress conditions of each portion of the connecting member 2 are different, and the bending portion 24 is the weakest. In order to extend the service life of the connection member 2, a reinforcing rib 23 may be provided on the connection member 2 for supporting the bent portion 24, and preferably, the reinforcing rib 23 is provided at an inner corner side of the bent portion 24. The inner angle side is more convenient and attractive compared with the outer angle side.

Further, the button 3 is connected with the connecting piece 2 in a hinged manner, the operating part 31 can be rotated and pressed down around the hinged part, the operating part 31 enters the key groove 21, the operating part 31 is provided with anti-skid threads, and the driving part 33 is in abutting connection with the linkage piece 4.

The tie rod of the above embodiment may be applied not only to a trunk but also to a trailer, a movable refrigerator, a sound box, or the like. The mounting piece is used for fixedly connecting with the loading piece, and when the telescopic adjustment device is used, a user can press buttons on two sides simultaneously by two hands, and can carry out telescopic adjustment on the pull rod.

All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Claims (10)

1. The double-button wide pull rod comprises two telescopic pull rods which are arranged in parallel, wherein each pull rod comprises at least two tubes which are nested layer by layer, and a locking mechanism which is positioned in the tubes and used for realizing expansion and position locking between the tubes; the novel pull rod is characterized in that one end of the pull rod is connected with a connecting piece, and a handle is connected between the two connecting pieces; the locking mechanism is controlled by a control button assembly, the control button assembly comprises a button arranged on a connecting piece and a linkage piece matched with the button, and the linkage piece pushes a control rod of the locking mechanism, so that the locking mechanism is unlocked, and the pipes can slide in a telescopic manner.

2. The double-button wide pull rod according to claim 1, wherein a plurality of positioning holes are formed in the side wall of the pipe at intervals, the locking mechanism comprises a bolt matched with the positioning holes and a reset spring, and when the bolt is inserted into the positioning holes to realize locking, the control rod pushes the linkage piece and the button to reset under the action of the reset spring.

3. The double-button wide draw bar according to claim 1, wherein the connecting piece or the handle is provided with a bending part, and the bending part enables the central cross section of a frame body formed by the draw bar, the connecting piece and the handle to be not a horizontal plane.

4. A two-button wide draw bar according to claim 3, wherein the bending portion provided on the connecting member has reinforcing ribs provided on the side of the bending inner corner thereof.

5. The two-button wide draw bar of claim 1, wherein the two tubes comprise a sub tube and a main tube, the sub tube is nested in the main tube, and a mounting piece for attaching with a carrier is arranged on the draw bar.

6. The double-button wide pull rod according to claim 5, wherein the connecting piece is connected with one end of the sub pipe, the mounting piece comprises a first mounting piece mounted on the top of the main pipe, a first spacing layer is arranged on the top of the first mounting piece, and a pipe orifice is arranged on the first spacing layer and is smaller than the outer side cross section of the main pipe but can allow the sub pipe to slide up and down; the connecting piece is close to the outer side of one end of the sub-pipe, and is provided with a limiting protrusion which is in contact with the first spacing layer.

7. The two-button wide draw bar of claim 5, wherein the bottom of the telescopic draw bar is provided with a second mounting member, and the second mounting member comprises a second spacer layer arranged on the bottom end surface of the telescopic draw bar in a padded manner.

8. The dual button wide pull rod as claimed in any one of claims 1 to 7, wherein the side wall of the connecting member is provided with button holes, and the button holes are communicated with the inside of the connecting member; the button is provided with an operation part extending out of the button hole, a driving part hidden in the connecting piece and a holding part preventing the button from being separated from the button hole; the button is hinged with the connecting piece, and the operating part can rotate around the hinged part and transmit acting force to the linkage piece through the driving part.

9. The dual button wide pull rod as claimed in any one of claims 1 to 7, wherein the side wall of the connecting member is provided with button holes, and the button holes are communicated with the inside of the connecting member; the button is provided with an operation part extending out of the button hole, a driving part hidden in the connecting piece and a holding part preventing the button from being separated from the button hole; the button is inserted in the key groove in a sliding way, one side of the linkage piece, which faces the button, is provided with an inclined plane, and the driving part is in sliding fit transmission with the inclined plane.

10. A two-button wide draw bar according to any one of claims 1 to 7 wherein said handle is sleeved with a sponge sleeve.

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