Pull rod structure and device with pull rod structure

Abstract

The utility model relates to the technical field of telescopic rods, in particular to a pull rod structure and a device with the pull rod structure, the pull rod structure comprises an outer pipe, an inner sleeve and an adjusting mechanism, and the outer pipe is provided with a movable cavity; the inner sleeve is telescopically arranged in the movable cavity; the adjusting mechanism comprises a limiting piece, an adjusting piece and a driving assembly, the limiting piece is arranged on the inner wall of the movable cavity, and the limiting piece is provided with a plurality of inserting holes formed in the extending direction of the cavity wall of the movable cavity at intervals; the adjusting piece comprises a connecting plug arranged at the end, contained in the movable cavity, of the inner sleeve, and the connecting plug can move close to or away from the limiting piece relative to the inner sleeve. The driving assembly is arranged in the inner sleeve and movably connected with the adjusting piece. And the driving assembly can drive the inserting head to be inserted into or separated from any inserting hole of the limiting piece, so that the inner sleeve can be fixed or telescopically moved relative to the external pipe. According to the pull rod structure, the telescopic length can be adjusted in a multi-stage mode under the condition that the structural strength of the pull rod structure is guaranteed through the adjusting mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of telescopic rods, in particular to a pull rod structure and a device with the pull rod structure. Background Art

[0002] In daily life, objects such as suitcases, speakers and baby strollers all have a pull rod structure that is easy to drag. The pull rod structure includes an external tube and an inner sleeve. The external tube is movably arranged on the corresponding object, and the inner sleeve is movably sleeved in the external tube. When these objects need to be dragged, the inner sleeve is pulled out of the external tube to form a pull rod structure that is easy to drag with the external tube.

[0003] The pull rod structure is a fixed adjustment method, that is, the inner sleeve can move freely in the external tube (under normal circumstances, there is a limiting structure inside the external tube, and the limiting structure is used to prevent the inner sleeve from completely detaching from the external tube), but it cannot be fixed at any position of the external tube, resulting in that the length of the tube that can be combined with the inner sleeve and the external tube is relatively single, which is not convenient for different people to pull different lengths.

[0004] In order to overcome this problem, in the related art, the external tube and the inner sleeve of the pull rod structure are structurally improved. The external tube is provided with a plurality of adjustment holes along the extension direction of its length, and the inner sleeve has a matching portion that can be inserted into the adjustment holes to achieve multi-stage adjustment of the pull rod structure. However, providing a plurality of adjustment holes in the external tube will reduce the structural strength of the external tube, making it prone to breakage. Utility Model Content

[0005] The main purpose of the utility model is to provide a pull rod structure, aiming to ensure the structural strength of the pull rod structure under the premise of realizing multi-level adjustment through the pull rod structure of the adjustment mechanism.

[0006] In order to achieve the above-mentioned purpose, the pull rod structure proposed by the utility model includes:

[0007] An external tube, wherein the external tube is provided with an active cavity;

[0008] an inner sleeve, the inner sleeve being telescopically disposed in the movable cavity; and

[0009] The adjusting mechanism comprises a limiter, an adjusting member and a driving assembly, wherein the limiter is arranged on the inner wall of the movable cavity, and the limiter is provided with a plurality of plug holes arranged at intervals along the extension direction of the cavity wall of the movable cavity; the adjusting member comprises a plug connector arranged at the end of the inner sleeve received in the movable cavity, and the plug connector can move closer to or away from the limiter relative to the inner sleeve; the driving assembly is arranged on the inner sleeve and is movably connected with the adjusting member;

[0010] Wherein, the driving assembly can drive the plug connector to be plugged into or disengaged from any one of the plug holes of the limiting member, so that the inner sleeve can be fixed or telescopically moved relative to the external tube.

[0011] In an embodiment of the present invention, the adjusting member has at least two plug connectors, and the at least two plug connectors are arranged at intervals along the arrangement direction of the plug holes.

[0012] In one embodiment of the utility model, the adjustment mechanism also includes an assembly part, and part of the structure of the assembly part is inserted into the inner sleeve; the assembly part is provided with a first limiting groove, and the adjustment part is limited in the first limiting groove; the first limiting groove accommodates a first elastic part, and the two ends of the first elastic part are respectively connected to the groove wall of the first limiting groove and the side of the adjustment part facing away from the limiting part.

[0013] In one embodiment of the utility model, the adjusting member is provided with a guide groove, and the guide groove forms a first guide slope facing the groove wall of the inner sleeve; the driving assembly includes a pressing portion, a first transmission rod, a second transmission member and a second elastic member connected in sequence:

[0014] Wherein, the pressing part is movably connected to the inner sleeve, the first transmission rod is arranged inside the inner sleeve, the end of the second transmission member away from the first transmission rod forms a second guide slope adapted to the first guide slope, the first guide slope can abut the second guide slope, and the two ends of the second elastic member are respectively connected to the facing sides of the assembly part and the second transmission member.

[0015] In an embodiment of the present utility model, the assembly part is provided with a second limiting groove arranged along the extension direction of the active cavity, and a part of the structure of the second transmission member is limited in the second limiting groove; the second limiting groove is connected to the first limiting groove.

[0016] In one embodiment of the utility model, the second transmission member includes a connecting body and two elastic arms, and the two elastic arms are spaced apart from each other on the connecting body; the assembly part has two second limit grooves, and the two second limit grooves are relatively arranged on the side walls of the assembly part, and each of the elastic arms is movably limited in one of the second limit grooves; the end face of the elastic arm forms the second guide slope.

[0017] In one embodiment of the utility model, the adjusting member also includes a plurality of shockproof members, each of which is provided with a shockproof channel; the plurality of shockproof members are arranged at intervals in the inner sleeve, and a partial structure of the first transmission rod is limitedly located in the shockproof channel.

[0018] In an embodiment of the present utility model, the pull rod structure further includes a stopper, and the stopper is disposed on the bottom wall of the movable cavity to stop and limit the adjusting member.

[0019] In an embodiment of the present utility model, the pull rod structure further includes a limiting sleeve, which is disposed on the inner wall of the cavity opening of the movable cavity to stop and limit the adjusting member.

[0020] The utility model also provides a device with a pull rod structure, the device with a pull rod structure comprises a device body and the pull rod structure, and the external tube is movably arranged on the device body.

[0021] In the technical solution of the present utility model, the pull rod structure includes an external tube, an inner sleeve and an adjusting mechanism. The external tube is provided with an active cavity, and the inner sleeve is movably arranged in the active cavity. The adjusting mechanism includes a limiter, an adjusting member and a driving assembly. The limiter is provided with a plurality of plug holes arranged at intervals along the extension direction of the cavity wall of the active cavity. An adjusting member is provided at the lower end of the inner sleeve. The adjusting member has a plug connector that can be plugged into the plug hole. Because the adjusting member is provided at the end of the inner sleeve accommodated in the active cavity and the adjusting member is fixed in position relative to the open end of the inner sleeve along the length direction of the inner sleeve, the position of the inner sleeve in the external tube can be changed by changing any plug hole to which the plug connector is plugged by the driving assembly, thereby realizing multi-stage length adjustment. Without reducing the existing structural strength of the external tube, the pull rod structure can adapt to the different length requirements of different groups of people. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the pull rod structure provided by the utility model;

[0024] Figure 2 For along Figure 1 Partial structural cross-section along line AA;

[0025] Figure 3 for Figure 2 A in the enlarged view;

[0026] Figure 4 An assembly diagram of a portion of the pull rod structure provided by the utility model;

[0027] Figure 5A schematic diagram of the three-dimensional structure of an embodiment of the second transmission member provided by the utility model;

[0028] Figure 6 A three-dimensional structural schematic diagram of an embodiment of an assembly provided by the utility model;

[0029] Figure 7 A schematic diagram of the three-dimensional structure of an embodiment of the adjusting member provided by the utility model;

[0030] Figure 8 The present invention is a three-dimensional structural diagram of an embodiment of a position limiting member provided by the present invention.

[0031] Description of Figure Numbers:

[0032]

[0033]

[0034] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0038] Please refer to Figures 1 to 8 The pull rod structure proposed in the utility model includes:

[0039] The peripheral tube 10 is provided with an active cavity;

[0040] An inner sleeve 20, which is telescopically disposed in the active cavity; and

[0041] The adjusting mechanism 30 includes a stopper 301, an adjusting member 302 and a driving assembly 40. The stopper 301 is arranged on the inner wall of the movable cavity. The stopper 301 is provided with a plurality of plug holes 30a arranged at intervals along the extension direction of the cavity wall of the movable cavity. The adjusting member 302 includes a plug connector 3021 arranged at the end of the inner sleeve 20 accommodated in the movable cavity. The plug connector 3021 can move closer to or away from the stopper 301 relative to the inner sleeve 20. The driving assembly 40 is arranged on the inner sleeve 20 and is movably connected to the adjusting member 302.

[0042] The driving assembly 40 can drive the plug connector 3021 to be plugged into or disengaged from any plug hole 30a of the limiting member 301 , so that the inner sleeve 20 can be fixed or telescopically moved relative to the external tube 10 .

[0043] In one embodiment of the utility model, the pull rod structure includes an external tube 10, an inner sleeve 20 and an adjusting mechanism 30. The external tube 10 is provided with a movable cavity, and the inner sleeve 20 is movably arranged in the movable cavity. The adjusting mechanism 30 includes a limit member 301 and an adjusting member 302. The limit member 301 is provided with a plurality of plug holes 30a arranged at intervals along the extension direction of the cavity wall of the movable cavity. An adjusting member 302 is provided at the lower end of the inner sleeve 20. The adjusting member 302 has a plug connector 3021 that can be plugged into the plug hole 30a. Because the adjusting member 302 is connected to the inner sleeve 20 and the relative position between the two is fixed, the position of the inner sleeve 20 in the external tube 10 can be changed by changing any plug hole 30a to which the plug connector 3021 is plugged, thereby realizing multi-stage length adjustment. Without reducing the existing structural strength of the external tube 10, the pull rod structure can adapt to different usage lengths required by different groups of people.

[0044] In this embodiment, the pull rod structure includes two external tubes 10 and two inner sleeves 20, and the external tubes 10 and the inner sleeves 20 are both tubular structures with a certain length, wherein the two inner sleeves 20 are connected by a handle structure, and each inner sleeve 20 is arranged in an active cavity of an external tube 10, and the handle structure is provided with a pressable button structure, and the button structure is movably connected to the drive component 40. Specifically, the telescopic pull rod structure composed of each external tube 10 and an inner sleeve 20 includes an adjustment mechanism 30, and the adjustment mechanism 30 includes a limit member 301 and an adjustment member 302. The limit member 301 can be fixed on the inner wall of the external tube 10 by means including but not limited to an adhesive medium, a locking structure, etc., and the limit member 301 is provided with a plurality of plug holes 30a arranged at intervals along the extension direction of the cavity wall of the external active cavity; the adjustment member 302 is arranged at the bottom of the inner sleeve 20. It can be understood that The distance between the adjusting member 302 and the other end of the inner sleeve 20 remains unchanged, and a partial structure of the adjusting member 302 facing the limiting member 301 is provided with a movable plug connector 3021. When the user presses the button structure or the button structure is not subjected to pressure, the driving assembly 40 drives the adjusting member 302 to approach or move away from the limiting member 301, so that the plug connector 3021 can be plugged into or out of the plug hole 30a. When the plug connector 3021 is away from the plug hole 30a, the inner sleeve 20 is in a movable state relative to the external tube 10. At this time, the user applies tension or pressure to the inner sleeve 20 to change the position of the inner sleeve 20 in the external tube 10. When the inner sleeve 20 reaches any position of the external tube 10 to meet the pull rod structure length required by the user, the pressing of the pressing portion 401 is released, and the plug connector 3021 is inserted into the opposite plug hole 30a at this moment to complete the length locking. How to change the state of the plug connector 3021 and the plug hole 30a through the driving assembly 40 will be explained in detail later.

[0045] In one embodiment of the present invention, Figure 3 and Figure 7As shown, the adjusting member 302 has at least two plug connectors 3021, and the at least two plug connectors 3021 are arranged at intervals along the arrangement direction of the plug holes 30a.

[0046] In this embodiment, the adjustment member 302 has two plug connectors 3021, and the two plug connectors 3021 are arranged at intervals along the arrangement direction of the plug holes 30a, and the spacing between the two plug connectors 3021 is consistent with the spacing between any two adjacent plug holes 30a. When a plug connector 3021 has a structural fracture, resulting in the failure of the locking of the adjustment mechanism 30, the other plug connector 3021 can still be plugged into a plug hole 30a to complete the locking of the adjustment mechanism 30 and realize the position locking of the inner sleeve 20 relative to the external tube 10. Of course, the adjustment member 302 can also be provided with more than two plug connectors 3021, as long as each plug connector 3021 can be simultaneously plugged into a plug hole 30a at a relatively position, and no limitation is made here.

[0047] In one embodiment of the present invention, Figure 3 and Figure 4 As shown, the adjustment mechanism 30 further includes an assembly part 303, and a part of the assembly part 303 is inserted into the inner sleeve 20; the assembly part 303 is provided with a first limiting groove 30c, and the adjustment member 302 is limitedly provided in the first limiting groove 30c;

[0048] The first limiting groove 30 c accommodates a first elastic member 304 , and two ends of the first elastic member 304 are respectively connected to the groove wall of the first limiting groove 30 c and a surface of the adjusting member 302 facing away from the limiting member 301 .

[0049] In this embodiment, the adjustment mechanism 30 also includes an assembly part 303 and a first elastic member 304. The assembly part 303 is provided with a plug-in structure on one side facing the open end of the external tube 10. The plug-in structure can be plugged into the inner sleeve 20, and the plug-in structure and the inner sleeve 20 are fixed together using a pin so that the assembly part 303 is fixed on the inner sleeve 20. Further, the assembly part 303 is also provided with a first horizontally arranged limiting groove 30c. The adjustment member 302 is arranged in the first limiting groove 30c and can be moved away from or close to the limiting member 301 along the extension direction of the first limiting groove 30c. The first elastic member 304 The first elastic member 304 is arranged inside the first limiting groove 30c, and the two ends of the first elastic member 304 are respectively connected to the groove wall of the first limiting groove 30c and the side of the adjusting member 302 facing away from the limiting member 301. By changing the length of the first elastic member 304, the plug connector 3021 can be plugged into or away from the plug hole 30a; further, the adjusting member 302 abuts against the inner groove wall of the first limiting groove 30c, so that the adjusting member 302 is restricted by the inner groove wall of the first limiting groove 30c during the movement of the adjusting member 302 in the first limiting groove 30c, and realizes directional movement, thereby preventing the plug connector 3021 from being unable to enter the plug hole 30a. In this embodiment, the first elastic member 304 is a spring; in another embodiment, the first elastic member 304 is a rubber plunger.

[0050] In one embodiment of the present invention, Figures 1 to 7 As shown, the adjusting member 302 is provided with a guide groove 30b, and the groove wall of the guide groove 30b facing the inner sleeve 20 forms a first guide inclined surface 3022; the driving assembly 40 includes a pressing portion 401, a first transmission rod 402, a second transmission member 403 and a second elastic member 404 connected in sequence:

[0051] Among them, the pressing part 401 is movably arranged on the external tube 10, the first transmission rod 402 is arranged inside the inner sleeve 20, the end of the second transmission member 403 away from the first transmission rod 402 forms a second guide slope 4031, the first guide slope 3022 abuts against the second guide slope 4031, and the two ends of the second elastic member 404 are respectively connected to the opposite sides of the assembly member 303 and the second transmission member 403.

[0052] In this embodiment, the adjusting member 302 is provided with an inclined guide groove 30b, and the groove wall of the guide groove 30b facing the inner sleeve 20 forms a first guide inclined surface 3022. Specifically, when the placement state of the pull rod structure is perpendicular to the horizontal plane, the first guide inclined surface 3022 is inclined in the counterclockwise direction to form an angle of non-90 degrees with the horizontal plane. Further, the driving component 40 includes a pressing part 401, a first transmission rod 402, a second transmission member 403 and a second elastic member 404 connected in sequence. The state of the plug connector 3021 and the plug hole 30a can be changed by the driving component 40. Specifically, both ends of the pressing part 401 are connected to an inner sleeve 20, and the inner sleeve 20 is movably sleeved in the external tube 10 so that the pressing part 401 is connected to the button structure; the pressing part 401 is set as a pressing plate, and the pressing part 401 is built into the handle structure. One side of the pressing plate is connected to the button structure through a spring, so that the button can be movably penetrated into the pressing handle; the two ends of the pressing plate are respectively A first transmission rod 402 is connected, the first transmission rod 402 is arranged in the inner sleeve 20 and extends along the length direction of the inner sleeve 20, and the bottom end of the first transmission rod 402 can be connected to the second transmission member 403 through a connecting medium such as an adhesive or a connecting sleeve, or can be an integral structure with the second transmission member 403, which is not limited here; the end of the second transmission member 403 away from the first transmission rod 402 forms a second guiding slope 4031 adapted to the first guiding slope 3022, and the second transmission member 403 can pass through the interior of the assembly member 303 and the adjustment member 302 to extend into the guide groove 30b, and a limiting groove structure can also be provided on the side wall of the assembly member 303 for the second transmission member 403 to extend into the guide groove 30b, so that the first guiding slope 3022 can abut against the second guiding slope 4031, and at the same time, a second elastic member 404 is inserted between the second transmission member 403 and the assembly member 303, and the second elastic member 404 is respectively connected to the assembly member 303 and the second transmission member 403 facing each other;When the button is subjected to pressure, the pressure is transmitted to the pressing plate through the spring, and the pressing plate moves downward in the left and right directions of the pressure, driving the first transmission rod 402 to move downward, and the second transmission member 403 connected to the first transmission rod 402 descends with the first transmission rod 402 until the second guide slope 4031 abuts against the first guide slope 3022. As the pressure increases, the second guide slope 4031 begins to squeeze the first guide slope 3022. The first guide slope 3022 can decompose the pressure received into a first component force along the first guide slope 3022 and a second component force along the horizontal direction. Under the action of the second component force, the adjusting member 302 moves away from the limiting member 301 to make the plug connector 3021 break away from the restriction of the plug hole 30a. At this time, the first elastic member 304 and the second elastic member 404 are both in a compressed state, and an upward pulling force is applied to the pressing handle to pull out the inner sleeve 20. When the inner sleeve 20 reaches the active When the cavity is at a certain position so that the length of the inner sleeve 20 combined with the external tube 10 meets the user's pull rod length requirement, when the pressure on the button is released, the spring, the first elastic member 304 and the second elastic member 404 can all be deformed and restored due to elastic deformation. At this time, the second elastic member 404 pushes the adjusting member 302 to move toward the limit member 301, so that the plug connector 3021 is plugged into the plug hole 30a. In the process of the second elastic member 404 pushing the adjusting member 302 to move toward the limit member 301, the force of the first guide slope 3022 on the second guide slope 4031 is decomposed into a third component along the second guide slope 4031 and a fourth component vertically upward. The second transmission member 403 moves upward under the action of the fourth component to restore its position, and the first transmission rod 402 also restores its position under the joint left and right of the spring and the first elastic member 304. At this point, the working principle of the pull rod structure to achieve multi-stage adjustment is clearly explained. In this embodiment, the first elastic member 304 and the second elastic member 404 are both springs; in another embodiment, the first elastic member 304 and the second elastic member 404 are rubber plungers. ;

[0053] In one embodiment of the present invention, Figure 6 As shown, the assembly part 303 is provided with a second limiting groove 30d arranged along the extension direction of the active cavity, and a part of the structure of the second transmission member 403 is limited in the second limiting groove 30d; the second limiting groove 30d is connected to the first limiting groove 30c.

[0054] In this embodiment, the assembly part 303 is provided with a second limiting groove 30d arranged along the extension direction of the movable cavity, the second limiting groove 30d is connected to the first limiting groove 30c, and part of the structure of the second transmission member 403 extends into the guide groove 30b through the second limiting groove 30d, so that the second transmission member 403 can be directional-ally abutted against the adjustment member 302 along the groove wall direction of the first limiting groove 30c to prevent movement deviation.

[0055] In one embodiment of the present invention, Figure 5As shown, the second transmission member 403 includes a connecting body 4032 and two elastic arms 4033, and the two elastic arms 4033 are spaced apart from each other on the connecting body 4032; the assembly part 303 has two second limiting grooves 30d, and the two second limiting grooves 30d are relatively arranged on the side walls of the assembly part 303, and each elastic arm 4033 is movably limited in a second limiting groove 30d; the end face of the elastic arm 4033 forms a second guide slope 4031.

[0056] In this embodiment, in order to improve the assembly stability of the pull rod structure, the side wall of the assembly part 303 is provided with two second limiting grooves 30d, and the second transmission member 403 includes a connecting body 4032 and two elastic arms 4033; the end faces of the elastic arms 4033 form a second guiding inclined surface 4031, and the two elastic arms 4033 are arranged at intervals on the connecting body 4032. The end faces of the two elastic arms 4033 facing each other are both formed with a convex structure. At the same time, the end faces of the elastic arms 4033 form a second guiding inclined surface 4031. When the second transmission member 403, the assembly part 303 and the adjusting member 302 are assembled, the two elastic arms 4033 can be applied with a pulling force in an expanded state, so that each elastic arm 403 3 is movably arranged in a second limiting groove 30d, and the protruding structure can abut against the side groove wall of the guide groove 30b; it can be understood that, in order to facilitate the assembly of the assembly part 303 and the adjusting part 302 and ensure that the adjusting part 302 can move in the first limiting groove 30c, there is a certain gap between the assembly part 303 and the adjusting part 302, when the plug connector 3021 is plugged into the plug hole 30a, the outer surface of the protruding structure facing the connecting body 4032 abuts against the groove wall of the guide groove 30b facing away from the assembly part 303, and the two elastic arms 4033 clamp the adjusting part 302 through the protruding structure, and the two together improve the stability of the plug connector 3021 plugging into the plug hole 30a, and prevent the pull rod structure from loosening.

[0057] In one embodiment of the present invention, Figure 3 As shown, the adjusting member 302 further includes a plurality of shockproof members 50, each of which is provided with a shockproof channel; the plurality of shockproof members 50 are arranged at intervals in the inner sleeve 20, and a part of the structure of the first transmission rod 402 is limitedly located in the shockproof channel.

[0058] In this embodiment, the adjusting member 302 also includes a plurality of shockproof members 50, and the shockproof members 50 are provided with shockproof channels. The plurality of shockproof members 50 are arranged at intervals in the inner sleeve 20. At the same time, the shockproof members 50 can be fixed in the inner sleeve 20 through a fixed structure. Part of the structure of the first transmission rod 402 is limited to be located in the shockproof channel to avoid the first transmission rod 402 from loosening when deformed by pressure or shaken externally, thereby improving the pressing stability of the pull rod structure.

[0059] In one embodiment of the present invention, Figure 3 and Figure 4As shown, the pull rod structure further includes a limit plug 60 , which is disposed on the bottom wall of the movable cavity to stop the limit adjustment member 302 .

[0060] In this embodiment, the pull rod structure also includes a limit plug 60, which is fixed to the bottom of the movable cavity by a pin. When the adjusting member 302 abuts against the limit plug 60, the inner sleeve 20 can no longer move downward, and the inner sleeve 20 is terminated and limited. At this time, the limit plug 60 can also receive the adjusting member 302, thereby increasing the assemblability of the pull rod structure.

[0061] In one embodiment of the present invention, Figure 1 As shown, the pull rod structure further includes a limiting sleeve 70 , which is disposed on the inner wall of the cavity opening of the movable cavity to stop the limiting adjustment member 302 .

[0062] In this embodiment, the pull rod structure also includes a limit sleeve 70, which is fixed on the inner wall of the cavity opening of the movable cavity. The inner and outer surfaces of the limit sleeve 70 respectively abut against the outer wall of the inner sleeve 20 and the inner wall of the external tube 10, thereby reducing the shaking degree of the inner sleeve 20 and improving the stability of the pull rod structure. When the inner sleeve 20 is in the longest pulled-out state, the adjusting member 302 abuts against the end of the limit sleeve 70. At this time, the inner sleeve 20 can no longer move up, and the inner sleeve 20 is terminated and limited.

[0063] The utility model also proposes a device with a pull rod structure, which includes a device body and a pull rod structure, wherein the external tube 10 is movably arranged in the device body, and the device with a pull rod structure can be a mobile speaker or a suitcase, which is not limited here. The specific structure of the pull rod structure refers to the above embodiment, and since the device with a pull rod structure adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0064] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A pull rod structure, characterized in that: The pull rod structure comprises: An external tube (10), wherein the external tube (10) is provided with an active cavity; an inner sleeve (20), the inner sleeve (20) being telescopically disposed in the movable cavity; and An adjusting mechanism (30), the adjusting mechanism (30) comprising a limiting member (301), an adjusting member (302) and a driving assembly, the limiting member (301) being arranged on the inner wall of the movable cavity, the limiting member (301) being provided with a plurality of plug holes (30a) arranged at intervals along the extension direction of the cavity wall of the movable cavity; the adjusting member (302) comprising a plug connector (3021) arranged on the end of the inner sleeve (20) received in the movable cavity, the plug connector (3021) being movable relative to the inner sleeve (20) towards or away from the limiting member (301); the driving assembly being arranged on the inner sleeve (20) and being movably connected to the adjusting member (302); The driving component is capable of driving the plug connector (3021) to be plugged into or disengaged from any one of the plug holes (30a) of the limiting member (301), so that the inner sleeve (20) can be fixed or telescopically moved relative to the external tube (10).

2. The pull rod structure according to claim 1, characterized in that: The adjusting member (302) has at least two plug connectors (3021), and the at least two plug connectors (3021) are arranged at intervals along the arrangement direction of the plug holes (30a).

3. The pull rod structure according to claim 1, characterized in that: The adjusting mechanism (30) further comprises an assembly part (303), a part of the structure of which is inserted into the inner sleeve (20); the assembly part (303) is provided with a first limiting groove (30c), and the adjusting member (302) is limitedly arranged in the first limiting groove (30c); The first limiting groove (30c) accommodates a first elastic member (304), and two ends of the first elastic member (304) are respectively connected to the groove wall of the first limiting groove (30c) and a side of the adjusting member (302) facing away from the limiting member (301).

4. The pull rod structure according to claim 3, characterized in that: The adjusting member (302) is provided with a guide groove (30b), and the guide groove (30b) forms a first guide inclined surface (3022) facing the groove wall of the inner sleeve (20); the driving assembly comprises a pressing portion (401), a first transmission rod (402), a second transmission member (403) and a second elastic member (404) connected in sequence: The pressing portion (401) is movably connected to the inner sleeve (20), the first transmission rod (402) is arranged inside the inner sleeve (20), and the end of the second transmission member (403) away from the first transmission rod (402) forms a second guide slope (4031) adapted to the first guide slope (3022), the first guide slope (3022) can abut the second guide slope (4031), and the two ends of the second elastic member (404) are respectively connected to the facing sides of the assembly member (303) and the second transmission member (403).

5. The pull rod structure according to claim 4, characterized in that: The assembly part (303) is provided with a second limiting groove (30d) arranged along the extension direction of the active cavity, and a part of the structure of the second transmission member (403) is limited in the second limiting groove (30d); the second limiting groove (30d) is connected to the first limiting groove (30c).

6. The pull rod structure according to claim 5, characterized in that: The second transmission member (403) comprises a connecting body (4032) and two elastic arms (4033), wherein the two elastic arms (4033) are arranged at intervals on the connecting body (4032); the assembly part (303) has two second limiting grooves (30d), wherein the two second limiting grooves (30d) are arranged opposite to each other on the side wall of the assembly part (303), and each of the elastic arms (4033) is movably limited in one of the second limiting grooves (30d); and the end surface of the elastic arm (4033) forms the second guiding inclined surface (4031).

7. The pull rod structure according to claim 4, characterized in that: The adjusting member (302) further comprises a plurality of shockproof members (50), each of the shockproof members (50) being provided with a shockproof channel; the plurality of shockproof members (50) are arranged at intervals in the inner sleeve (20), and a part of the structure of the first transmission rod (402) is limitedly located in the shockproof channel.

8. The pull rod structure according to claim 1, characterized in that: The pull rod structure also includes a limit stopper (60), which is arranged on the bottom wall of the movable cavity and is used to stop and limit the adjusting member (302).

9. The pull rod structure according to claim 1, characterized in that: The pull rod structure also includes a limiting sleeve (70), which is arranged on the inner wall of the cavity opening of the movable cavity and is used to stop and limit the adjusting member (302).

10. A device with a pull rod structure, characterized in that: The device with a pull rod structure comprises a device body and the pull rod structure according to any one of claims 1 to 9, and the external tube (10) is movably arranged on the device body.

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