Clamping mechanism and threading device

Abstract

The utility model provides a clamping mechanism and a threading device. The clamping mechanism comprises a mounting pipe, a clamping mechanism and a clamping mechanism, wherein a wire protection pipe can be inserted into the mounting pipe; the corrugated pipe is connected to the tail end of the mounting pipe; the clamping assembly is arranged on the mounting pipe and comprises a plurality of clamping jaws movably arranged on the mounting pipe, the mounting pipe is provided with a plurality of through holes communicated with the interior of the mounting pipe, the clamping jaws can be embedded into the through holes and exposed out of the interior of the mounting pipe to clamp the wire protection pipe, or the clamping jaws can retract from the interior of the mounting pipe to loosen the wire protection pipe; the control assembly is movably arranged on the mounting pipe and can drive the clamping assembly to act, when the control assembly moves in the first direction, the clamping jaws can be driven to retract from the penetrating holes, when the control assembly moves in the second direction, the clamping jaws are embedded into the penetrating holes, and the control assembly has continuous force for moving in the second direction. And the second direction is the direction in which the wire protection tube is separated from the mounting tube. The clamping mechanism provided by the utility model is better in threading effect, and can improve the user experience during threading.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of threading device, especially relates to a clamping mechanism and threading device. BACKGROUND

[0002] In the construction engineering, when arranging power, basically need to thread the pipeline. At present, the threading mode through the automatic threading machine is applied more and more because of the advantages of saving time and labor.

[0003] When the automatic threading machine threads, the wire protection tube needs to be first threaded through the guide pipe at the front end of the automatic threading machine and connected with the automatic threading mechanism in the machine. However, the guide pipe and the wire protection tube of the automatic threading device on the market are not connected, and the guide pipe is easy to be separated under the reaction force, which can easily cause the wire in the wire protection tube to bend and break. Moreover, the operator needs to force against the machine to maintain the relative position of the guide pipe and the wire protection tube during the threading process, which consumes a lot of physical strength of the operator and has poor use experience.

[0004] In addition, the angle of the guide pipe is relatively limited and can only be adjusted by rotating around the axis direction of the fixed end of the guide pipe and the automatic threading machine, which cannot well meet the threading use requirements of various included angles. This scheme also causes a turning at the guide pipe when the wire is pushed out and retracted, which can additionally increase the resistance of the wire and the threading workload of the operator. UTILITY MODEL CONTENTS

[0005] The utility model provides a clamping mechanism, which aims to solve the technical problem of poor use effect of the existing automatic threading machine.

[0006] The utility model is implemented in the following manner: a clamping mechanism is used for clamping a wire protection tube, which comprises:

[0007] An installation pipe into which the wire protection tube can be inserted;

[0008] A corrugated pipe connected to the end of the installation pipe;

[0009] A clamping assembly provided on the installation pipe, wherein the clamping assembly comprises a plurality of clamping claws movably provided on the installation pipe, the installation pipe is provided with a plurality of through holes in communication with the inside of the installation pipe, the plurality of through holes correspond to the plurality of clamping claws one by one, the clamping claws can be embedded in the through holes and exposed from the inside of the installation pipe to clamp the wire protection tube in the installation pipe, or the clamping claws can be retracted from the inside of the installation pipe to release the wire protection tube; and

[0010] A control assembly movably arranged on the mounting pipe and capable of driving the clamping assembly to act, when the control assembly moves in a first direction, the clamping jaws are lifted outwardly to retract from the through holes, when the control assembly moves in a second direction, the clamping jaws are pressed inwardly to embed into the through holes, the control assembly has a sustained force to move in the second direction, and the second direction is the direction in which the wire protection pipe is pulled out of the mounting pipe.

[0011] Further, the clamping assembly further comprises a tension spring surrounding the ends of the plurality of clamping jaws, and the tension spring presses the plurality of clamping jaws towards the corresponding plurality of through holes.

[0012] Further, the clamping jaw comprises:

[0013] a connecting portion at the front end of the clamping jaw, the connecting portion is rotationally connected with the mounting pipe;

[0014] a clamping portion at the middle of the clamping jaw and connected with the connecting portion, the clamping portion extends towards the through hole, and the clamping portion is provided with a plurality of teeth; and

[0015] a force receiving portion at the end of the clamping jaw and connected with the connecting portion, the force receiving portion is driven by the control assembly, the force receiving portion is provided with a recess, the tension spring is embedded in the recess and presses the force receiving portion towards the mounting pipe.

[0016] When the control assembly moves in the first direction, the force receiving portion is pushed to move outwardly to drive the clamping portion to retract from the through hole, and when the control assembly moves in the second direction, the tension spring presses the force receiving portion towards the through hole.

[0017] Further, the extension direction of the clamping portion is inclined at an acute angle with the entering direction of the wire protection pipe.

[0018] Further, the surface of the force receiving portion towards the mounting pipe is an arc surface gradually close to the mounting pipe.

[0019] Further, the mounting pipe is provided with a plurality of hinged seats distributed along the circumference thereof, and the plurality of clamping jaws are arranged on the plurality of hinged seats through a plurality of rotating shafts.

[0020] Further, the control assembly comprises:

[0021] a sliding sleeve movably arranged on the mounting pipe, the sliding sleeve has a flange capable of contacting the plurality of clamping jaws, and the flange is located in the surrounding of the plurality of clamping jaws; and

[0022] an outer cover movably arranged outside the mounting pipe, and the sliding sleeve is located in the outer cover.

[0023] When the cover moves in the first direction, the sliding sleeve is pushed to move in the first direction, and the flange pushes the clamping jaw to lift outward; when the cover moves in the second direction, the flange moves to the front end of the clamping jaw, and the clamping jaw is pressed inward.

[0024] Further, the control assembly further comprises:

[0025] An elastic stop ring movably sleeved on the mounting pipe, located at the rear side of the sliding sleeve and connected with the cover, wherein the elastic stop ring moves synchronously with the sliding sleeve;

[0026] An end cover sleeved on the end of the mounting pipe, wherein the end cover is connected with the cover; and

[0027] An elastic element sleeved on the mounting pipe, wherein the elastic element is at least partially surrounded by the end cover, one end of the elastic element abuts against the end cover, and the other end abuts against the sliding sleeve or the elastic stop ring, and the elastic element applies a pushing force to the sliding sleeve or the elastic stop ring in the second direction.

[0028] Further, the inner circumferential surface of the cover is provided with a first step portion and a second step portion adjacent to the first step portion, wherein the first step portion corresponds to the sliding sleeve, and the second step portion corresponds to the elastic stop ring.

[0029] The utility model also provides a threading device, which comprises:

[0030] A threading machine; and

[0031] The clamping mechanism according to any one of the above can be detachably arranged at the front end of the threading machine.

[0032] In the clamping mechanism, the clamping assembly and the control assembly are matched, so that the wire protection tube can be simply and conveniently clamped or released, the stable connection or separation of the wire protection tube and the clamping mechanism is conveniently and quickly realized, and the threading operation is facilitated. Since the control assembly has a continuous force in the second direction, if the wire protection tube has a movement trend of being separated from the mounting pipe during the threading process, the clamping jaw is only driven to be pressed inward more, and the wire protection tube is clamped in the mounting pipe more tightly, so that the problems of the lead being bent or broken are effectively avoided. In addition, the bellows can meet the threading operation requirements in a large clamping angle range, and the use comfort of the operator is improved. The clamping mechanism adopting the scheme can offset a large part of the reaction force when the threading process is blocked, greatly reduces the labor intensity of the operator, and greatly improves the user experience during the threading. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a perspective view of the clamping mechanism provided by the embodiment of the present utility model;

[0034] Figure 2 is an axial cross-sectional view of the clamping mechanism provided by the embodiment of the present utility model;

[0035] Figure 3 is a perspective exploded view of the clamping mechanism provided by the embodiment of the present utility model;

[0036] Figure 4 is a circumferential cross-sectional view of the clamping mechanism provided by the embodiment of the present utility model;

[0037] Figure 5 is a perspective view of the clamping jaw provided by the embodiment of the present utility model.

[0038] Main element symbol explanation:

[0039] Mounting pipe-10, perforation-11, hinged seat-12, bellows-20, clamping assembly-30, clamping jaw-31, connecting part-311, clamping part-312, tooth-3121, stress part-313, recess-3131, tension spring-32, control assembly-40, sliding sleeve-41, flange-411, cover-42, first step part-421, second step part-422, elastic check ring-43, end cover-44, elastic element-45, fastener-50, connecting seat-60, clamping mechanism-100. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the present utility model more clear and intelligible, the following will further explain the present utility model by combining with the drawings and embodiments. The examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model, and cannot be understood as limiting the present utility model. In addition, it should be understood that the specific embodiments described herein are only used to explain the present utility model, and are not used to limit the present utility model.

[0041] In the description of the present utility model, it should be understood that the indicated orientation or position relationship in the description of the orientation and position relationship is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model.

[0042] Moreover, the terms "first", "second", etc. are used herein only to describe different instances, and do not imply or suggest relative importance or a number of the technical features indicated. Thus, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically limited.

[0043] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. For the purpose of simplifying the present application, the components and arrangements of specific examples are described in the following. Of course, they are only examples, and the purpose is not to limit the present application.

[0044] In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0045] The clamping mechanism 100 of the embodiment of the present application is used for clamping the wire protection tube, please refer to Figures 1 to 5 The clamping mechanism 100 comprises:

[0046] The mounting pipe 10 for inserting the wire protection tube;

[0047] The corrugated pipe 20 connected to the end of the mounting pipe 10;

[0048] The clamping assembly 30 provided on the mounting pipe 10, the clamping assembly 30 comprises a plurality of clamping claws 31 movably provided on the mounting pipe 10, the mounting pipe 10 is provided with a plurality of through holes 11 communicating with the inside thereof, the plurality of through holes 11 correspond to the plurality of clamping claws 31 one by one, the clamping claw 31 can be embedded in the through hole 11 and exposed from the inside of the mounting pipe 10, so as to clamp the wire protection tube in the mounting pipe 10, or the clamping claw 31 can be retracted from the inside of the mounting pipe 10 to release the wire protection tube; and

[0049] The control assembly 40 movably provided on the mounting pipe 10 and can drive the clamping assembly 30 to act, when the control assembly 40 moves to the first direction, the clamping claw 31 can be lifted outwardly and retracted from the through hole 11, when the control assembly 40 moves to the second direction, the clamping claw 31 can be pressed inwardly and embedded in the through hole 11, the control assembly 40 has a sustained force moving to the second direction, the second direction is the direction of the wire protection tube being pulled out of the mounting pipe 10.

[0050] The utility model discloses a clamping mechanism 100, through the cooperation between clamping assembly 30 and control assembly 40, can simply, conveniently to the electric wire protection tube is stably clamped or loosened, to facilitate, fast realization electric wire protection tube and clamping mechanism 100's stable connection or separate, it is convenient to carry out threading operation. Because control assembly 40 has the sustained force to the second direction movement, if electric wire protection tube has the movement tendency of getting out of installation pipe 10 in the threading process, only make the clamping jaw 31 be driven more inwardly down pressure, and electric wire protection tube is more tightly clamped in installation pipe 10, effectively avoid the problem of lead bending, breaking.

[0051] And, the corrugated pipe 20 can meet the threading operation demand in the larger included angle range, improve the user's use comfort. The clamping mechanism 100 of the scheme is used to push wire and pull wire, can offset the larger part of reaction force when being blocked in the threading process, greatly reduce the labor intensity of operator, greatly improve the user experience when threading.

[0052] In the embodiment, the installation pipe 10 is the structural carrier of the clamping mechanism 100, for installing the corrugated pipe 20, the clamping assembly 30 and the control assembly 40 and other structures, the installation pipe 10 and the corrugated pipe 20 are both hollow pipe structures, so that the electric wire protection tube can be inserted into the clamping mechanism 100, wherein the installation pipe 10 is convenient for clamping the electric wire protection tube with the clamping assembly 30, and the corrugated pipe 20 is convenient for providing the bending angle of the electric wire protection tube.

[0053] When the clamping mechanism 100 is assembled to the threading machine for actual application, the corrugated pipe 20 is connected to the threading machine, the electric wire protection tube is inserted into the installation pipe 10, and the front end reaches the step inside the installation pipe 100 and stops advancing due to obstruction. If the electric wire protection tube has a movement tendency of moving outward from the clamping mechanism 100, the electric wire protection tube will be clamped and stuck by the clamping assembly 30 (i.e. the clamping jaw 31), so that the electric wire protection tube cannot be actively removed from the clamping mechanism 100, thereby avoiding the problem of the lead bending and breaking caused by the lead escaping from the electric wire protection tube. If the electric wire protection tube needs to be pulled out of the clamping mechanism 100, the user controls the control assembly 40 to move in the first direction, so that the clamping jaw 31 is lifted outward and retracted from the perforation 11, the clamping jaw 31 is separated from the electric wire protection tube to loosen the electric wire protection tube, so that the electric wire protection tube can be pulled out.

[0054] In the embodiment, the reference of the outward lifting and inward pressing action of the clamping jaw 31 and the reference of the first direction and the second direction are all the installation pipe 10, wherein:

[0055] Lifting outward means lifting and lifting up the clamping jaw 31 to the outside of the installation pipe 10, and separating from the wire protection pipe, so as to loosen the wire protection pipe from the installation pipe 10; pressing inward means pressing and embedding the clamping jaw 31 to the inside of the installation pipe 10, and tightly contacting with the wire protection pipe, so as to clamp the wire protection pipe in the installation pipe 10;

[0056] The first direction is opposite to the second direction, the first direction is the direction of the wire protection pipe penetrating into the installation pipe 10, and the second direction is the direction of the wire protection pipe being pulled out of the installation pipe 10, for example, the first direction is the direction of the rear end of the installation pipe 10, and the second direction is the direction of the front end of the installation pipe 10, that is, when the control assembly 40 is moved to the rear end of the installation pipe 10, the clamping jaw 31 can be lifted outward to loosen the wire protection pipe, and when the control assembly 40 is moved to the front end of the installation pipe 10, the clamping jaw 31 can be pressed inward to clamp the wire protection pipe.

[0057] It should be noted that the control assembly 40 also has a first position and a second position on the installation pipe 10, the first position is the limit position of the control assembly 40 moving in the first direction, and the second position is the limit position of the control assembly 40 moving in the second direction, and the control assembly 40 is in the second position in the normal state, so that the wire protection pipe can be effectively clamped when it penetrates into the installation pipe 10.

[0058] In this embodiment, the control assembly 40 has a sustained force moving in the second direction, that is, the control assembly 40 can be actively reset to the second position or remain in the second position, for example, a reset spring can be arranged on the corresponding position of the installation pipe 10 to push the control assembly 40 to reset or keep the control assembly 40 in the second position, so that the clamping jaw 31 can clamp the wire protection pipe when it penetrates into the installation pipe 10.

[0059] Of course, the control assembly 40 can also be pushed by the user to reset, so as to speed up the clamping speed of the clamping jaw 31.

[0060] In other embodiments, a universal type hose, a snake neck pipe or a metal woven hose can also be used as the bellows 20.

[0061] Please refer to Figure 3 and Figure 4 Furthermore, the installation pipe 10 is provided with a plurality of hinge seats 12 distributed along the circumference thereof, and a plurality of clamping jaws 31 are correspondingly arranged on the plurality of hinge seats 12 through a plurality of rotating shafts.

[0062] Specifically, the hinged seat 12 is an integral structure with the mounting pipe 10, and each hinged seat 12 is a pair of protrusions arranged on the outer surface of the mounting pipe 10, and each protrusion is provided with a through hole, and the front end of the clamping jaw 31 is also provided with a through hole 11, and the rotation of the clamping jaw 31 on the mounting pipe 10 can be simply and stably realized by the rotation shaft passing through the through hole of the protrusion and the through hole 11 of the clamping jaw 31, and the assembly and disassembly of the clamping jaw 31 are facilitated.

[0063] More, in an embodiment, the rotation shaft and the clamping jaw 31 can be an integral structure, so that they can be simplified as one part, so as to simplify the structure of the clamping mechanism 100, and also simplify the production and assembly process.

[0064] Further, the plurality of clamping jaws 31 and the plurality of through holes 11 are uniformly distributed along the circumferential direction of the mounting pipe 10, so as to uniformly clamp the wire protection pipe from the circumferential direction of the wire protection pipe, so that the wire protection pipe can be uniformly and stably clamped, and the appearance of the mounting pipe 10 is also regular and beautiful.

[0065] In Figure 3 With Figure 4 As shown in the drawings, the clamping jaw 31 and the through hole 11 are 6, and they are arranged around the circumference of the mounting pipe 10, and then around the wire protection pipe, so as to more uniformly and stably clamp the wire protection pipe in the mounting pipe 10.

[0066] In other embodiments, the number of clamping jaws 31 and through holes 11 can also be other, such as 2, 3, 4, 5 or other numbers, which can be set according to specific needs.

[0067] Please refer to Figure 2 With Figure 3 Further, the clamping assembly 30 further comprises a tension spring 32 surrounding the ends of the plurality of clamping jaws 31, and the tension spring 32 presses the plurality of clamping jaws 31 towards the plurality of through holes 11.

[0068] Specifically, the tension spring 32 is in the shape of a ring, surrounds the tail of the plurality of clamping jaws 31, and presses the plurality of clamping jaws 31 towards the inside of the mounting pipe 10, so that the clamping jaw 31 clamps the wire protection pipe in the mounting pipe 10, and the tension spring 32 can be made of a material with a certain deformation capacity, such as a commonly used material for making springs, to ensure that it can be deformed to a certain extent, so that the clamping jaw 31 can be lifted by the actuating assembly 40, thereby releasing the wire protection pipe.

[0069] In normal condition, the plurality of clamping claws 31 on the outer periphery of the mounting tube 10 are pressed to the inner side of the mounting tube 10 by the tension spring 32, so that the clamping claws 31 clamp the wire protection tube. When it is needed to release the wire protection tube, the operating assembly 40 can drive the plurality of clamping claws 31 to lift outward, and the plurality of clamping claws 31 overcome the pressure from the tension spring 32, so that the tension spring 32 expands outward to a certain extent. When the driving force of the operating assembly 40 disappears, the plurality of clamping claws 31 are pressed to the mounting tube 10 again by the tension spring 32.

[0070] In other embodiments, the tension spring 32 can also be replaced by a structure with elastic deformation ability, such as a rubber ring, as long as it can elastically surround the ends of the plurality of clamping claws 31 and press the plurality of clamping claws 31 inward.

[0071] Please refer to Figures 2 to 5 Further, the clamping claw 31 comprises:

[0072] The connecting portion 311 at the front end of the clamping claw 31, the connecting portion 311 is rotationally connected with the mounting tube 10;

[0073] The clamping portion 312 at the middle of the clamping claw 31 and connected with the connecting portion 311, the clamping portion 312 extends towards the through hole 11, and the clamping portion 312 is provided with a plurality of teeth 3121; and

[0074] The force receiving portion 313 at the end of the clamping claw 31 and connected with the connecting portion 311, the force receiving portion 313 can be driven by the operating assembly 40, the force receiving portion 313 is provided with a recess 3131, the tension spring 32 is embedded in the recess 3131 and presses the force receiving portion 313 to the mounting tube 10;

[0075] When the operating assembly 40 moves in the first direction, the force receiving portion 313 is pushed to move outward to drive the clamping portion 312 to retract from the through hole 11, and when the operating assembly 40 moves in the second direction, the tension spring 32 presses the force receiving portion 313 to the through hole 11.

[0076] Specifically, the clamping claw 31 is an integral structure, and the rotation connection between the clamping claw 31 and the mounting tube 10 can be realized by penetrating the connecting portion 311 with the hinge seat 12 described above. When the rotating shaft and the connecting portion 311 are an integral structure, the rotating shaft protrudes outward on both sides of the connecting portion 311, that is, a protruding block (column) can be designed on both sides of the connecting portion 311 to cooperate with the hinge seat 12 described above, so as to realize the rotation connection between the clamping claw 31 and the mounting tube 10.

[0077] The clamping portion 312 protrudes downward on the clamping jaw 31, and the tooth 3121 is arranged at the lower end of the clamping portion 312. The end of the tooth 3121 is small and sharp, and can penetrate into the through hole 11 to stably clamp the wire protection tube. Moreover, the extension direction of the clamping portion 312 is obliquely inclined at an acute angle to the entering direction of the wire protection tube, that is, the direction of the tooth 3121 is obliquely inclined at an acute angle to the entering direction of the wire protection tube.

[0078] Thus, when the wire protection tube has a tendency to move out of the mounting tube 10, it will be limited by the clamping portion 312 and the tooth 3121, so as to avoid the situation that the wire protection tube is separated from the clamping mechanism 100. Moreover, the greater the force with which the wire protection tube is separated from the clamping mechanism 100, the more the clamping portion 312 will be pressed downward, and the tighter the wire protection tube will be clamped.

[0079] In the embodiment, the recess 3131 is arranged at the end of the clamping jaw 31. By arranging the recess 3131 on the stress portion 313, the tension spring 32 can stably surround the stress portions 313 of the plurality of clamping jaws 31, and the structural stability of the tension spring 32 is ensured, and the plurality of clamping jaws 31 can stably receive the pressure applied by the tension spring 32.

[0080] As shown in FIG. 4, the stress portion 313 is arranged on the clamping jaw 31, and the stress portion 313 is arranged on the inner surface of the clamping jaw 31. Figure 2 Moreover, the surface of the stress portion 313 facing the mounting tube 10 is an arc surface gradually close to the mounting tube 10.

[0081] That is, in the first direction, the distance between the inner surface of the stress portion 313 and the mounting tube 10 is gradually close. Thus, when the control operation assembly 40 is operated in the first direction, the operation assembly 40 can smoothly push the stress portion 313 by sliding friction, so as to smoothly and gradually lift the stress portion 313 outward to retract from the through hole 11, and smoothly lift the clamping jaw 31 outward to release the wire protection tube. When the operation assembly 40 is operated in the second direction, the operation assembly 40 no longer hinders the stress portion 313, and the stress portion 313 can be smoothly and gradually retracted inward, so as to smoothly and downward press the clamping jaw 31 inward by the tension spring 32.

[0082] Please refer to FIG. 4, and the control operation assembly 40 comprises: Figures 1 to 3 Moreover, the control operation assembly 40 comprises:

[0083] a sliding sleeve 41 movably sleeved on the mounting tube 10, the sliding sleeve 41 has a flange 411 capable of contacting the plurality of clamping jaws 31, and the flange 411 is located in the surrounding of the plurality of clamping jaws 31; and

[0084] an outer cover 42 movably sleeved outside the mounting tube 10, and the sliding sleeve 41 is located in the outer cover 42;

[0085] When the outer cover 42 moves in the first direction, the sliding sleeve 41 is pushed to move in the first direction, and the flange 411 pushes the clamping jaw 31 to lift outward; when the outer cover 42 moves in the second direction, the flange 411 moves to the front end of the clamping jaw 31, and the clamping jaw 31 is pressed inward.

[0086] In the embodiment, the sliding sleeve 41 is in sliding connection with the plurality of clamping jaws 31, and the plurality of clamping jaws 31 are arranged on the outer periphery of the sliding sleeve 41. Specifically, the flange 411 is in sliding connection with the inner surface of the stress receiving portion 313 of the clamping jaw 31. The surface of the flange 411 is a smooth arc surface, which is surrounded by the plurality of stress receiving portions 313 and is in sliding contact, so that the sliding sleeve 41 is in sliding connection with the plurality of clamping jaws 31.

[0087] When the sliding sleeve 41 moves on the mounting pipe 10 in the first direction, the flange 411 can push the stress receiving portion 313 to lift outward, so as to drive the clamping jaw 31 to lift outward. When the sliding sleeve 41 moves on the mounting pipe 10 in the second direction, the flange 411 no longer hinders the stress receiving portion 313 from being pressed inward, so that the clamping jaw 31 can be pressed inward by the tension spring 32, and the electric wire protection pipe is clamped smoothly and stably.

[0088] Further, the outer cover 42 is arranged opposite to the sliding sleeve 41. The outer cover 42 is sleeved on the mounting pipe 10 and located at the front end of the clamping mechanism 100. The outer cover 42 can cover the mounting pipe 10 and the clamping jaw 31, the tension spring 32 and the sliding sleeve 41 and the like on the mounting pipe 10, so as to keep the appearance of the clamping mechanism 100 regular and compact, reduce the influence of external impurities, water vapor and the like on the above structures, and also be used for conveniently controlling the movement of the sliding sleeve 41. In addition, the outer cover 42 is limited by the front end of the mounting pipe 10, so that the outer cover 42 can move relative to the mounting pipe 10, and will not move too long distance.

[0089] The outer cover 42 moving in the first direction can actively push the sliding sleeve 41 to move in the first direction. When the outer cover 42 moves in the second direction, the outer cover 42 can push the sliding sleeve 41 to move in the second direction, that is, the active reset of the control assembly 40. Of course, the user can also actively control the outer cover 42 to move in the second direction, so as to reduce the influence of the outer cover 42 on the movement of the sliding sleeve 41.

[0090] Further, the surface of the outer cover 42 can be provided with a structure such as a texture or a plastic sleeve for improving friction, so as to facilitate the user to control the outer cover 42 by the palm.

[0091] Please continue to refer to Figures 1 to 3 Further, the control assembly 40 further comprises:

[0092] The elastic stop ring 43 is movably sleeved on the mounting pipe 10, located at the rear side of the sliding sleeve 41 and connected with the outer cover 42. The elastic stop ring 43 moves synchronously with the sliding sleeve 41.

[0093] An end cover 44 is sleeved on the end of the mounting pipe 10 and is connected with the outer cover 42.

[0094] An elastic element 45 is sleeved on the mounting pipe 10 and is at least partially surrounded by the end cover 44. One end of the elastic element 45 abuts against the end cover 44, and the other end abuts against the sliding sleeve 41 or the elastic stop ring 43. The elastic element 45 applies a pushing force to the sliding sleeve 41 or the elastic stop ring 43 in the second direction.

[0095] In this embodiment, the elastic stop ring 43 can be a rubber ring, a plastic ring or other parts with elastic deformation capability. The elastic stop ring 43 is attached to the rear side of the sliding sleeve 41 and has a larger circumference than the sliding sleeve 41, thereby providing elastic support and buffering for the sliding sleeve 41.

[0096] The end cover 44 is connected with the outer cover 42 to form a space, in which the clamping jaw 31, the tension spring 32, the sliding sleeve 41, the elastic stop ring 43 and the elastic element 45 are accommodated. The end cover 44 is stably mounted on the end of the mounting pipe 10 by means of fasteners such as screws, rivets or threaded connection, which facilitates assembly and disassembly of the end cover 44 and the mounting pipe 10. The cross-sectional area of the end cover 44 is smaller than that of the outer cover 42. When the outer cover 42 moves in the first direction, the front end of the end cover 44 can be embedded in the outer cover 42, and at this time, the elastic element 45 is compressed by the sliding sleeve 41 towards the end cover 44.

[0097] Under normal conditions, the elastic element 45 applies a pushing force to the sliding sleeve 41 or the elastic stop ring 43 in the second direction, so that the clamping jaw 31 is kept in a state of being pressed inwards, i.e., the clamping mechanism 100 is kept in a state of clamping the wire protection pipe. When the user pushes the outer cover 42 in the first direction, the outer cover 42 drives the sliding sleeve 41 to move in the first direction, and the sliding sleeve 41 compresses the elastic element 45 towards the end cover 44, while the clamping jaw 31 is lifted outwards by the sliding sleeve 41, and the wire protection pipe is released by the clamping jaw 31. When the user releases the outer cover 42, the elastic element 45 is reset to automatically push the sliding sleeve 41 in the second direction, and the sliding sleeve 41 no longer hinders the clamping jaw 31, so that the clamping jaw 31 is reset to be pressed inwards, and the wire protection pipe is clamped.

[0098] In this embodiment, the elastic element 45 can be a spring, a spring sheet or other elastic parts capable of generating a pushing force by elastic deformation.

[0099] Please refer to Figure 2 Furthermore, the inner circumferential surface of the outer cover 42 is provided with a first step portion 421 corresponding to the sliding sleeve 41 and a second step portion 422 adjacent to the first step portion 421 and corresponding to the elastic stop ring 43.

[0100] Specifically, the first step portion 421 and the second step portion 422 are annular step structures arranged on the inner circumferential surface of the outer cover 42, and the first step portion 421 and the second step portion 422 respectively abut against / are connected with the circumferential edge of the sliding sleeve 41 and the elastic retainer 43, and are respectively used to push the sliding sleeve 41 and the elastic retainer 43 to stably move on the installation pipe 10.

[0101] When the outer cover 42 moves in the first direction, the first step portion 421 and the second step portion 422 respectively push the sliding sleeve 41 and the elastic retainer 43 to move in the first direction. When the outer cover 42 moves in the second direction, the first step portion 421 is pushed by the sliding sleeve 41, and at this time, the elastic retainer 43 moves in the second direction along with the outer cover 42.

[0102] Please refer to Figures 1 to 3 Furthermore, the front end of the corrugated pipe 20 is connected with the end of the installation pipe 10 through a fastener 50, and the end is connected with the connecting seat 60 through another fastener 50, and the connecting seat 60 is used to be connected with the threading machine.

[0103] The fastener 50 can be a nut, and a thread can be arranged on the nut, that is, the front end and the end of the corrugated pipe 20 can be respectively screwed with the end of the installation pipe 10 and the connecting seat 60 through the nut, so that the corrugated pipe 20 is convenient to assemble and disassemble, and has better structural stability.

[0104] The fastener 50 can also be a limiting and fastening part, and a thread is not arranged on the fastener 50, and the fastener 50 is fixedly arranged with the corrugated pipe 20 and the connecting seat 60 through clamping and limiting.

[0105] The threading device provided by the embodiment of the utility model comprises:

[0106] The threading machine; and

[0107] According to the clamping mechanism 100 of any one of the above, the clamping mechanism 100 is detachably arranged at the front end of the threading machine.

[0108] In the clamping mechanism 100, through cooperation between the clamping assembly 30 and the control assembly 40, the electric wire protection tube can be simply and conveniently clamped or loosened, so that the electric wire protection tube and the clamping mechanism 100 are stably connected or separated, and threading operation is facilitated. Since the control assembly 40 has a continuous force for moving in the second direction, if the electric wire protection tube has a movement trend of being separated from the installation tube 10 during threading, only the clamping jaw 31 is driven to be pressed more inwardly and downwardly, and the electric wire protection tube is clamped more tightly in the installation tube 10, so that the problem of the lead being bent or broken is effectively avoided. Moreover, the corrugated pipe 20 can meet the threading operation requirement in a large clamping angle range, and the use comfort of the operator is improved. The clamping mechanism 100 is used for pushing and pulling the wire, and a large part of the reaction force during the threading process can be offset when the threading process is blocked, so that the labor intensity of the operator is greatly reduced, and the user experience during threading is greatly improved.

[0109] In the description of the present specification, the description referring to the terms "embodiment one", "embodiment two" and the like means that the specific features, structures, materials or characteristics described in combination with the embodiments or examples are included in the plurality of embodiments or examples of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0110] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A clamping mechanism for clamping an electrical wire protection tube, characterized by, The utility model relates to a kind of electric wire protection tube, comprising: Installation pipe that electric wire protection tube can be inserted into; Corrugated pipe connected to the end of the installation pipe; Clamping assembly provided on the installation pipe, the clamping assembly includes a plurality of clamping claws movably provided on the installation pipe, a plurality of perforations are provided on the installation pipe and communicate with the inside thereof, and the plurality of perforations correspond to the plurality of clamping claws one by one, the clamping claws can be embedded in the perforations and exposed from the inside of the installation pipe to clamp the electric wire protection tube in the installation pipe, or the clamping claws can be retracted from the inside of the installation pipe to release the electric wire protection tube; And Control assembly movably provided on the installation pipe and can drive the clamping assembly to act, when the control assembly moves in a first direction, the clamping claws can be lifted outward and retracted from the perforations, when the control assembly moves in a second direction, the clamping claws are pressed inward and embedded in the perforations, the control assembly has a sustained force to move in the second direction, and the second direction is the direction in which the electric wire protection tube is released from the installation pipe.

2. The clamping mechanism of claim 1, wherein The clamping assembly further includes a tension spring surrounding the ends of the plurality of clamping claws, and the tension spring presses the plurality of clamping claws towards the plurality of perforations.

3. The clamping mechanism of claim 2, wherein, The clamping claws include: a connecting portion at the front end of the clamping claw, the connecting portion is rotatably connected to the installation pipe; a clamping portion at the middle of the clamping claw and connected to the connecting portion, the clamping portion extends towards the perforations, and a plurality of teeth are provided on the clamping portion;And a force-receiving portion at the end of the clamping claw and connected to the connecting portion, the force-receiving portion can be driven by the control assembly, a recess is provided on the force-receiving portion, and the tension spring is embedded in the recess and presses the force-receiving portion towards the installation pipe; When the control assembly moves in the first direction, the force-receiving portion is pushed to move outward to drive the clamping portion to retract from the perforations, and when the control assembly moves in the second direction, the tension spring presses the force-receiving portion towards the perforations.

4. The clamping mechanism of claim 3, wherein The extension direction of the clamping portion is inclined at an acute angle to the entering direction of the electric wire protection tube.

5. The clamping mechanism of claim 3, wherein The surface of the force-receiving portion towards the installation pipe is an arc surface gradually close to the installation pipe.

6. The chucking mechanism of claim 1, wherein A plurality of hinge seats are provided on the outer surface of the installation pipe and distributed along the circumference thereof, and a plurality of rotating shafts are provided on the plurality of hinge seats corresponding to the plurality of clamping claws.

7. The chucking mechanism of claim 1, wherein The control assembly includes: a sliding sleeve movably sleeved on the installation pipe, the sliding sleeve has a flange that can contact the plurality of clamping claws, and the flange is located in the surrounding of the plurality of clamping claws;And an outer cover movably sleeved on the outer surface of the installation pipe, and the sliding sleeve is located in the outer cover; When the outer cover moves in the first direction, the sliding sleeve is pushed to move in the first direction, and the flange pushes the clamping claws to lift outward, and when the outer cover moves in the second direction, the flange moves towards the front end of the clamping claws, and the clamping claws are pressed inward.

8. The clamping mechanism of claim 7, wherein, The control assembly further includes: a resilient stop ring movably sleeved on the installation pipe, located at the back side of the sliding sleeve and connected to the outer cover, the resilient stop ring moves synchronously with the sliding sleeve; an end cover sleeved on the end of the installation pipe, the end cover is connected to the outer cover;And An elastic element is sleeved on the mounting pipe, at least partially surrounded by the end cover, one end of the elastic element abutting against the end cover, the other end abutting against the sliding sleeve or the elastic retainer, the elastic element applying a pushing force to the sliding sleeve or the elastic retainer in the second direction.

9. The clamping mechanism of claim 8, wherein, A first step portion and a second step portion adjacent to the first step portion are arranged on the inner circumferential surface of the cover, the first step portion corresponding to the sliding sleeve, and the second step portion corresponding to the elastic retainer.

10. A threading device characterized by, Comprise: A threading machine; And The clamping mechanism according to any one of claims 1 to 9 is detachably arranged at the front end of the threading machine.

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