CN212752538U - Pull rod type box - Google Patents

Abstract

The utility model discloses a pull rod type box body, which comprises a base, a holding handle, at least two telescopic rods and at least two lock core components, wherein the two telescopic rods are arranged on the base; the holding handle is connected with the two telescopic rods; wherein two the lock core subassembly respectively with two the telescopic link is connected, the lock core subassembly has auto-lock state and unblock state, at least two when the lock core subassembly all is in unblock state, grip handle pulling two telescopic link simultaneous movement. The utility model discloses technical scheme aims at improving the unbalanced and atress wearing and tearing and the dead problem of card behind the lock core subassembly locking of pull rod formula box, improves the life of pull rod formula box.

Description

Pull rod type box

Technical Field

The utility model relates to a audio amplifier technical field, in particular to pull rod formula box.

Background

In the related art, because the pull rod type box body has the characteristics of convenience in carrying and the like, more and more pull rod type sound boxes and other products appear in the market. However, such pull rod type box bodies are generally large and heavy, the lock cylinder is usually arranged on a single-side pull rod of the conventional pull rod type box body for locking, and after the lock cylinder is locked, the lock cylinder is easily abraded due to uneven stress of the lock cylinder when the pull rod of the pull rod type box body is pulled, so that the lock cylinder cannot be locked due to structural failure after long-time abrasion, and the service life of the pull rod type box body is further influenced.

The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pull rod formula box aims at improving the unbalanced and atress wearing and tearing and the dead problem of card behind the lock core subassembly locking of pull rod formula box, improves the life of pull rod formula box.

In order to achieve the above object, the utility model provides a pull rod type box, include:

a base;

the telescopic rods are arranged on the base;

the holding handle is connected with the two telescopic rods; and

at least two lock core subassemblies, wherein two the lock core subassembly respectively with two the telescopic link is connected, the lock core subassembly has auto-lock state and unblock state, at least two when the lock core subassembly all is in unblock state, it stimulates two to grip the handle telescopic link simultaneous movement.

In an embodiment of the application, the pull rod type box further includes a control component, the control component is connected to the holding handle, each of the lock cylinder components is provided with a pushing element, the pushing element is used for switching the lock cylinder component to be in an unlocking state or a self-locking state, and the control component is connected to each of the pushing elements of the lock cylinder components and is used for driving the pushing element to switch the lock cylinder component to be in the unlocking state or the self-locking state.

In an embodiment of the present application, the control assembly includes:

the elastic piece is arranged on the holding handle;

the pressing plate is abutted to one end, away from the holding handle, of the elastic piece; and

the number of the abutting blocks is consistent with that of the lock cylinder assemblies, each abutting block is movably connected to the holding handle, and one abutting block abuts against a pushing piece of one lock cylinder assembly;

the pressing plate is used for pressing the elastic piece and pushing the abutting blocks to press the pushing pieces so as to enable each lock core assembly to be switched into an unlocking state or a self-locking state.

In an embodiment of the present application, the pressing plate is connected to a side of the holding handle facing away from the base;

and/or the pressing plate comprises a main body part and connecting parts arranged at two ends of the main body part, the abutting blocks are respectively rotatably connected with the holding handle, the main body part drives the connecting parts to push one ends of the abutting blocks to abut and press the pushing part, and the other ends of the abutting blocks rotate to abut and hold the main body part.

In an embodiment of the present application, the telescopic rod includes a first rod and a second rod, the first rod and the second rod are slidably connected, the first rod and the grip handle are connected, the second rod is connected to the base, and the lock core assembly is connected to the first rod to limit the sliding of the first rod and the second rod.

In an embodiment of the present application, the plug assembly is connected to a side of the first rod body facing away from the holding handle.

In an embodiment of the present application, the plug assembly further comprises:

the moving piece is connected with the first rod body in a sliding mode, the moving piece is provided with a yielding channel communicated with the inner wall of the second rod body, and one end, away from the control assembly, of the pushing piece is inserted into the yielding channel;

the abutting piece is arranged in the abdicating channel in a sliding mode and is connected with the pushing piece; and

the reset piece is movably connected with the moving piece and used for driving the moving piece to move so as to drive the abutting piece to move in the abdicating channel.

In an embodiment of this application, the guide slot is seted up to the moving member, the piece that resets includes dwang and main part board, the dwang rotate connect in the main part board, the one end of dwang is followed remove in the guide slot and butt in the inner wall of guide slot.

In an embodiment of the present application, the lock cylinder assembly further includes two sliding rods, two of the sliding rods are connected to the moving member, the reset member is provided with two sliding grooves, and the two sliding rods are respectively slidably connected to the two sliding grooves.

In an embodiment of the application, the base comprises a plurality of walking wheels, and the walking wheels are arranged on one side of the base, which is far away from the two telescopic rods;

and/or, pull rod formula box still includes the protective housing, the protective housing connect in the base, the protective housing with the base encloses to close and forms installation space, two at least telescopic link and two at least lock core subassembly all locates in the installation space.

The utility model discloses technical scheme's pull rod formula box includes base, two at least telescopic links and grips the handle, and two wherein telescopic links locate the base and with grip the handle and be connected, this pull rod formula box still is equipped with two at least lock core subassemblies in addition, and wherein two lock core subassemblies are connected with two telescopic links respectively, and this lock core subassembly has self-locking state and unblock state. So after two lock core subassemblies are all in the unblock state, two telescopic links synchronous motion of handle pulling are held in the rethread snatching to make two telescopic links tensile suitable length. When two lock core subassemblies were all in locking condition, the user then accessible was held the handle and is driven the base and remove. Because two lock core subassemblies are located two telescopic links department respectively to two lock core subassemblies can provide the locking force to two telescopic links respectively, prevent that single lock core subassembly atress is too big and wearing and tearing with higher speed, guarantee every lock core subassembly atress balance and improve its life, improve the life of pull rod formula box.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural view of an embodiment of the pull rod type box of the present invention;

FIG. 2 is a schematic cross-sectional view of the pull rod type case of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is an enlarged view of a portion of FIG. 2 at B;

FIG. 5 is a schematic view of a part of the structure of the pull rod type case of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 5 at C;

fig. 7 is a schematic structural view of the telescopic rod of the pull rod type box body of the present invention after being stretched;

FIG. 8 is a schematic structural view of the lock cylinder assembly of the pull rod type box of the present invention;

fig. 9 is a partial enlarged view of fig. 8 at D.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a pull rod formula box 100.

Referring to fig. 1, 2 and 7, in the embodiment of the present invention, the drawbar box 100 includes a base 10, at least two telescopic rods 20, a grip handle 30 and at least two lock cylinder assemblies 40, wherein the two telescopic rods 20 are disposed on the base 10; the holding handle 30 is connected with the two telescopic rods 20; wherein two the lock core subassembly 40 respectively with two the telescopic link 20 is connected, lock core subassembly 40 has auto-lock state and unblock state, at least two when lock core subassembly 40 all is in unblock state, grip handle 30 pulling two telescopic link 20 simultaneous movement.

The base 10 may be used to carry acoustic components such as speakers. It should be noted that, the quantity of lock core subassembly 40 is the same with the quantity of telescopic link 20, each telescopic link 20 all is connected with a lock core subassembly 40, thereby under a plurality of lock core subassemblies 40 locking cooperation, with the stability after the fixed of telescopic link 20 length of improvement, when a plurality of lock core subassemblies 40 all are in the locking state simultaneously, every lock core subassembly 40 all provides the locking force behind the user pulling telescopic link 20, in order to further make every lock core subassembly 40 atress more average, the concrete quantity of lock core subassembly 40 and telescopic link 20 can be selected by the technical staff in the art according to actual conditions. In addition, two telescopic links 20 can set up on the base at the interval, not only are convenient for the user to stimulate, conveniently maintain the telescopic link 20 of pull rod formula box 100 simultaneously and change, convenient dismantlement.

The utility model discloses technical scheme's pull rod formula box 100 includes base 10, two at least telescopic links 20 and grips handle 30, and two wherein telescopic links 20 locate base 10 and with grip handle 30 and be connected, this pull rod formula box 100 still is equipped with two at least lock core subassemblies 40 in addition, and wherein two lock core subassemblies 40 are connected with two telescopic links 20 respectively, and this lock core subassembly 40 has from lock state and unblock state. After the two lock core assemblies 40 are both unlocked, the two telescopic rods 20 are pulled to move synchronously by grabbing the holding handle 30, so that the two telescopic rods 20 are stretched to a proper length. When two lock core subassemblies 40 all are in locking state, the user then accessible grips handle 30 and drives base 10 and remove and because two lock core subassemblies 40 locate two telescopic links 20 departments respectively to two lock core subassemblies 40 can provide the locking force to two telescopic links 20 respectively, prevent that single lock core subassembly 40 atress is too big and wearing and tearing with higher speed, guarantee every lock core subassembly 40 atress balanced and improve its life, improve pull rod formula box 100's life.

Referring to fig. 1 to 6, in an embodiment of the present application, the pull-rod type box 100 further includes a control assembly 50, the control assembly 50 is connected to the holding handle 30, each of the lock cylinder assemblies 40 is provided with a pushing member 41, the pushing member 41 is used to switch the lock cylinder assembly 40 to be in an unlocking state or a self-locking state, and the control assembly 50 is connected to the pushing member 41 of each of the lock cylinder assemblies 40 to drive the pushing member 41 to switch the lock cylinder assembly 40 to be in the unlocking state or the self-locking state. Specifically, the pushing member 41 of each plug assembly 40 is connected through the control assembly 50, so that each plug assembly 40 can be switched to the unlocking state or the self-locking state through the control assembly 50, thereby facilitating the operation of a user and avoiding the situation that one plug assembly 40 is different from the other plug assemblies 40.

Further, the control assembly 50 includes an elastic member 51, a pressing plate 52 and a plurality of abutting blocks 53, wherein the elastic member 51 is disposed on the holding handle 30; the pressing plate 52 abuts against one end of the elastic piece 51 departing from the holding handle 30; the number of the abutting blocks 53 is the same as that of the lock cylinder assemblies 40, each abutting block 53 is movably connected to the holding handle 30, and one abutting block 53 abuts against a pushing piece 41 of one lock cylinder assembly 40; the pressing plate 52 is used for pressing the elastic member 51 and pushing the abutting blocks 53 to press the pushing member 41, so that each lock cylinder assembly 40 is switched to an unlocked state or a self-locking state. The elastic member 51 may be a spring, the spring may be fixed to the holding handle 30, the pressing plate 52 may be fixed to a side of the elastic member 51 away from the holding handle 30 by bonding or sleeving, the plurality of abutting blocks 53 are disposed at the holding handle 30 at intervals and opposite to the pressing plate 52, and each abutting block 53 may abut against the pushing member 41 of each lock cylinder assembly 40. When a user applies an external force, the pressing plate 52 is pressed and moved in a direction close to the holding handle 30 to press the elastic piece 51 and push the abutting blocks 53 to move, so that the abutting blocks 53 simultaneously press the pushing pieces 41 of the plurality of the plug assemblies 40, and the plug assemblies 40 are switched to the unlocking state or the self-locking state. And when the user no longer presses the pressing plate 52, the pressing plate 52 is restored to the original position by the elastic force of the elastic member 51. It should be noted that the pressing plate 52 is elongated to facilitate pressing by the user. Meanwhile, the pressing plate 52 is disposed on the grip handle 30 so that a user can directly press the pressing plate 52 of the control assembly 50 when grasping the grip handle 30, thereby facilitating the operation.

Further, the pressing plate 52 is connected to a side of the holding handle 30 facing away from the base 10; specifically, the pressing plate 52 is connected to a side of the holding handle 30 away from the base 10, so that a user can directly operate the pressing plate 52 from above the lever type box 100, and the operation is faster and more convenient.

In an optional embodiment, the pressing plate 52 includes a main body 521 and connecting portions 522 disposed at two ends of the main body 521, the main body 521 is connected to the connecting portions 522, the abutting blocks 53 are respectively rotatably connected to the holding handle 30, the main body 521 drives the connecting portions 522 to push one end of the abutting block 53 to abut against the pressing member 41, and the other end of the abutting block 53 rotates to abut against the main body 521. Specifically, the main body 521 and the connecting portion 522 may be integrated to ensure the stability of the overall structure of the pressing plate 52, and of course, the main body 521 and the connecting portion 522 may be detachably connected through a buckle or a screw, so as to facilitate later maintenance and replacement. The abutting block 53 is rotatably connected to the handle 30, and when the connecting portion 522 abuts against one end of the abutting block 53, the other end of the abutting block 53 is rotated to abut against the pressing plate 52, so as to prevent the pressing plate 52 from being pressed too deeply for a long time to damage the plug assembly 40, thereby ensuring the service life of the internal structure of the plug assembly 40.

Referring to fig. 7, in an embodiment of the present application, the telescopic rods 20 each include a first rod 21 and a second rod 22, the first rod 21 and the second rod 22 are slidably connected, the first rod 21 is connected to the grip handle 30, the second rod 22 is connected to the base 10, and the lock cylinder assembly 40 is connected to the first rod 21 to limit sliding of the first rod 21 and the second rod 22. Specifically, the first rod body 21 and the second rod body 22 may be arranged as round rods, so as to be conveniently held when being installed by a user, and meanwhile, the damage to the user caused by the tip is avoided. The first rod 21 can be detachably fixed to the handle 30 by a screw connection or a thread connection, so as to facilitate installation. The first rod 21 can be sleeved in the second rod 22 to realize sliding connection, so that the expansion link 20 can be prevented from occupying too large space. Of course, the first rod 21 and the second rod 22 can be slidably connected via the sliding groove 4421. The lock core assembly 40 is connected with the first rod body 21, when the lock core assembly 40 is in a self-locking state, the lock core assembly can be abutted against the inner wall of the second rod body 22, so that the sliding of the first rod body 21 and the second rod body 22 is limited, and in addition, the lock core is arranged in the second rod body 22, so that the lock core assembly 40 is prevented from being exposed and easily damaged.

Further, referring to fig. 5, the plug assembly 40 is connected to a side of the first rod 21 facing away from the holding handle 30. Specifically, the plug assembly 40 is connected to a side of the first rod 21 away from the holding handle 30, so that the two ends of the first rod 21 are stressed in a balanced manner, and it is convenient for a user to pull the holding handle 30.

In an optional embodiment, referring to fig. 4 to 6 and fig. 8, the plug assembly 40 further includes a moving member 42, an abutting member 43 and a resetting member 44, the moving member 42 is slidably connected to the first rod 21, the moving member 42 is provided with an abdicating channel 421 communicating with an inner wall of the second rod 22, and one end of the pushing member 41 facing away from the control assembly 50 is inserted into the abdicating channel 421; the abutting piece 43 is slidably arranged in the abdicating channel 421 and connected with the pushing piece 41; the reset piece 44 is movably connected to the moving piece 42, and the reset piece 44 is used for driving the moving piece 42 to move so as to drive the abutting piece 43 to move in the abdicating channel 421. Specifically, a first inclined guiding surface 411 is formed at one end of the pushing member 41, a groove is formed in the abutting member 43, a second inclined guiding surface 431 is formed in the groove, and the first inclined guiding surface 411 can abut against the second inclined guiding surface 431. When the plug assembly 40 is in the locked state, the abutting member 43 abuts against the inner wall of the second rod 22 to limit the sliding between the first rod 21 and the second rod 22. Thus, when the user is ready to switch the plug assembly 40 from the self-locking state to the unlocking state, the user pushes the pushing member 41 to move the moving member 42 in the direction toward the reset member 44, so that the first guiding inclined surface 411 of the pushing member 41 abuts against the second guiding inclined surface 431 of the inner groove of the abutting member 43, so that the abutting member 43 moves in the abdicating channel 421, and the abutting member 43 is separated from abutting against the inner wall of the second sliding rod 45, so that the plug assembly 40 is in the unlocking state, and therefore, the first rod 21 and the second rod 22 can slide relative to each other, and after the user stops continuously pressing the pressing plate 52, the pushing member 44 pushes the moving member 42 to return to the initial position, and the abutting member 43 in the moving member 42 abuts against the returning member 41. When a user is ready to convert the lock cylinder assembly 40 from the unlocking state to the self-locking state, the pushing member 41 is pushed to drive the moving member 42 to move in the direction of the reciprocating member 44, and then after the user stops continuously pressing the pressing plate 52, the restoring member 44 generates an upward pushing force to push the moving member 42 upward, so that the abutting member 43 located in the moving member 42 moves upward, and thus, because the abutting member 43 abuts against the moving member 42, and the first guiding inclined surface 411 and the second guiding inclined surface 431 are both arranged in an inclined surface, the component force of the second guiding inclined surface 431 can drive the abutting member 43 to move and abut against the inner wall of the second housing, so that the relative positions of the first rod body 21 and the second rod body 22 are fixed to realize the self-locking state. It should be noted that the plug assembly 40 may also be other existing plugs, and may be in a self-locking state and an unlocking state, which may be specifically selected by those skilled in the art.

Further, the moving member 42 is provided with a guide groove 422, the reset member 44 includes a rotating rod 441 and a main body plate 442, the rotating rod 441 is rotatably connected to the main body plate 442, and one end of the rotating rod 441 moves along the guide groove 422 and abuts against the inner wall of the guide groove 422. Specifically, the rotating rod 441 is fixed to the main body plate 442 by being sleeved and fixed thereto, and is rotatable with respect to the main body plate 442, the moving member 42 is provided with a guide groove provided in a stepped manner, and one end of the rotating rod 441 moves along the guide groove 422 and abuts against the inner wall of the guide groove 422. When a user is ready to convert the lock cylinder assembly 40 from the self-locking state to the unlocking state, when the pushing member 41 drives the moving member 42 to move downwards after the user presses the pressing plate 52, one end of the rotating rod 441 moves in the guide groove 422 and finally abuts against the inner wall of the end part of the guide groove 422 close to the upper left, and after the user stops continuously pressing the pressing plate 52, the rotating rod 441 moves along the inner wall of the guide groove 422 due to the rotating force and rubs against the inner wall of the guide groove 422, so that the moving member 42 is pushed to return to the initial position by the friction force, and the abutting member 43 and the moving member 42 are in an abutting state; when the user is ready to convert the lock cylinder assembly 40 from the unlocking state to the self-locking state, when the user presses the pressing plate 52 and then the pushing member 41 drives the moving member 42 to move downwards, one end of the rotating rod 441 moves in the guide groove 422 and finally abuts against the inner wall of the end part of the guide groove 422 close to the upper right, and, after the user stops pressing the pressing plate 52, at this time, the rotation rod 441 moves along the inner wall of the guide groove 422 due to the rotation force, and then, the friction is generated with the inner wall of the guide groove 422, so that the moving member 42 is moved upward by the friction force, thereby driving the abutting piece 43 to move upwards, and because the first inclined guiding surface 411 of the pushing piece 41 and the second inclined guiding surface 431 of the abutting piece 43 are always in an abutting state, therefore, when the abutting member 43 moves upward, a component force is generated due to the guiding of the guiding slope surface to push the abutting member 43 to move toward the inner wall of the second rod 22 and abut against the inner wall of the second rod to complete the self-locking state.

In an alternative embodiment, referring to fig. 8, the plug assembly 40 further includes two sliding rods 45, the two sliding rods 45 are connected to the moving member 42, the reset member 44 defines two sliding grooves 4421, and the two sliding rods 45 are slidably connected to the two sliding grooves 4421, respectively. The lock core assembly 40 further includes two sliding rods 45, the two sliding rods 45 can be fixed to the moving member 42 by bonding or screwing, a protrusion 451 is disposed at an end of the sliding rod 45 away from the first rod 21, and the protrusion 451 is limited in the sliding groove 4421 to prevent the sliding rod 45 from separating from the sliding groove 4421 of the reset member 44. This spout 4421 is opened in main body plate 442, through the direction of slide bar 45 and spout 4421 in order to guarantee moving member 42 and the stability of relative movement between the piece 44 that resets, sets up two slide bars 45 of bilateral symmetry simultaneously so that the atress is balanced, avoids rocking about and the dead problem of lock core card appears to make lock core subassembly 40 can normal use.

In an embodiment of the present application, referring to fig. 1 to 3, the base 10 includes a plurality of road wheels 11, and the plurality of road wheels 11 are disposed on a side of the base 10 away from the two telescopic rods 20; wherein these a plurality of walking wheels 11 can be so that base 10 can be convenient for move on the holding surface, and in order to improve the efficiency that base 10 removed, this walking wheel 11 can be for the universal wheel and then make base 10 be convenient for remove more.

In an optional embodiment, the drawbar type box 100 further includes a protective casing 60, the protective casing 60 is connected to the base 10, the protective casing 60 and the base 10 enclose an installation space, and at least two of the telescopic rods 20 and at least two of the lock cylinder assemblies 40 are all disposed in the installation space. Specifically, the protective shell 60 is arranged to protect components such as a speaker on the base 10, so as to ensure normal use of the drawbar type box 100, it can be understood that the protective shell 60 may be made of metal materials such as iron or aluminum, so as to improve the protection strength, or the protective shell 60 may be made of plastic materials with lower cost, which may be specifically selected by those skilled in the art and will not be described herein.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. A pull rod type box body is characterized by comprising:

a base;

the telescopic rods are arranged on the base;

the holding handle is connected with the two telescopic rods; and

at least two lock core subassemblies, wherein two the lock core subassembly respectively with two the telescopic link is connected, the lock core subassembly has auto-lock state and unblock state, at least two when the lock core subassembly all is in unblock state, it stimulates two to grip the handle telescopic link simultaneous movement.

2. The tie-rod box of claim 1, further comprising a control assembly, the control assembly being connected to the handle, each of the lock cylinder assemblies having a pushing member for switching the lock cylinder assembly between the unlocked state and the self-locked state, the control assembly being connected to the pushing member of each of the lock cylinder assemblies for driving the pushing member to switch the lock cylinder assembly between the unlocked state and the self-locked state.

3. The draw-bar box of claim 2, wherein the control assembly comprises:

the elastic piece is arranged on the holding handle;

the pressing plate is abutted to one end, away from the holding handle, of the elastic piece; and

the number of the abutting blocks is consistent with that of the lock cylinder assemblies, each abutting block is movably connected to the holding handle, and one abutting block abuts against a pushing piece of one lock cylinder assembly;

the pressing plate is used for pressing the elastic piece and pushing the abutting blocks to press the pushing pieces so as to enable each lock core assembly to be switched into an unlocking state or a self-locking state.

4. The pull-rod case of claim 3, wherein the pressing plate is connected to a side of the grip handle facing away from the base;

and/or the pressing plate comprises a main body part and connecting parts arranged at two ends of the main body part, the abutting blocks are respectively rotatably connected with the holding handle, the main body part drives the connecting parts to push one ends of the abutting blocks to abut and press the pushing part, and the other ends of the abutting blocks rotate to abut and hold the main body part.

5. The pull-rod type box body according to any one of claims 2 to 4, wherein the telescopic rod comprises a first rod body and a second rod body, the first rod body and the second rod body are slidably connected, the first rod body is connected with the holding handle, the second rod body is connected with the base, and the lock cylinder assembly is connected with the first rod body so as to limit sliding of the first rod body and the second rod body.

6. The tie bar case of claim 5, wherein the plug assembly is coupled to a side of the first rod facing away from the grip handle.

7. The tie-bar box of claim 5, wherein the plug assembly further comprises:

the moving piece is connected with the first rod body in a sliding mode, the moving piece is provided with a yielding channel communicated with the inner wall of the second rod body, and one end, away from the control assembly, of the pushing piece is inserted into the yielding channel;

the abutting piece is arranged in the abdicating channel in a sliding mode and is connected with the pushing piece; and

the reset piece is movably connected with the moving piece and used for driving the moving piece to move so as to drive the abutting piece to move in the abdicating channel.

8. The pull rod type box body according to claim 7, wherein the moving member has a guide groove, the reset member includes a rotating rod and a main body plate, the rotating rod is rotatably connected to the main body plate, and one end of the rotating rod moves along the guide groove and abuts against an inner wall of the guide groove.

9. The pull rod type box body according to claim 7, wherein the lock cylinder assembly further comprises two slide bars, the two slide bars are connected to the moving member, the reset member is provided with two sliding grooves, and the two slide bars are respectively slidably connected to the two sliding grooves.

10. The pull rod type box body according to any one of claims 1 to 4, wherein the base comprises a plurality of walking wheels, and the plurality of walking wheels are arranged on one side of the base, which faces away from the two telescopic rods;

and/or, pull rod formula box still includes the protective housing, the protective housing connect in the base, the protective housing with the base encloses to close and forms installation space, two at least telescopic link and two at least lock core subassembly all locates in the installation space.

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