CN213106948U - Pipe cutting tool handle and pipe cutting tool - Google Patents

Abstract

The utility model provides a pipe cutting tool handle and pipe cutting tool. The pipe cutting tool handle comprises a pin shaft assembly and a shell assembly; the casing subassembly is used for the holding cutting member, and the round pin axle subassembly sets up in the casing subassembly to can wear to establish the through-hole on the cutting member, the round pin axle subassembly can be followed the axial motion of the through-hole on the cutting member and wear to establish or deviate from the cutting member, makes cutting member demountable installation in the casing subassembly. The utility model provides a pipe cutting means makes cutting member detachably install on casing assembly through round pin axle subassembly, and convenient to use person dismantles or changes the cutting member at any time, and need not to dismantle casing assembly repeatedly to fastener or setting element in avoiding casing assembly lose, prevent that casing assembly from dismantling many times and take place to warp and break, and improve pipe cutting means's life.

Description

Pipe cutting tool handle and pipe cutting tool

Technical Field

The utility model relates to a hand tool technical field especially relates to a pipe cutting means handle and pipe cutting means.

Background

A pipe cutting tool is a tool which is convenient for a user to hold and manually cut a pipe fitting and mainly comprises a shell assembly and a cutting piece movably arranged on the shell assembly. The cutting member of current pipe cutting means usually can not directly be dismantled and change, to having seriously worn and torn, the pipe cutting means who waits to change the new cutter needs to dismantle its whole casing or handle, then takes out and waits to change the cutter, needs to adorn casing or handle back again after the change is accomplished. Fasteners, locating elements or other accessories used to secure the housing or handle are easily lost during removal and replacement of the tool; it also tends to deform or crack the housing or handle, thereby reducing the useful life of the pipe cutting tool.

SUMMERY OF THE UTILITY MODEL

Accordingly, there is a need for an improved pipe cutting tool handle and pipe cutting tool.

The utility model provides a pipe cutting tool handle, which comprises a pin shaft component and a shell component; the casing subassembly is used for the holding cutting member, and the round pin axle subassembly sets up in the casing subassembly to can wear to establish the through-hole on the cutting member, the round pin axle subassembly can be followed the axial motion of the through-hole on the cutting member and wear to establish or deviate from the cutting member, makes cutting member demountable installation in the casing subassembly.

In an embodiment of the present invention, the pin assembly includes a first pin and a second pin, the first pin and the second pin are detachably connected, and the housing assembly is provided with a first channel for the first pin to pass through; the first pin shaft can move in the first channel and penetrate through or separate from the cutting piece, and the second pin shaft can fix the first pin shaft and the shell assembly.

So set up, the user only needs the second round pin axle to dismantle from first round pin axle to take out first round pin axle from first passageway, can remove the state that first round pin axle wore to establish the cutting member through-hole and dismantle the cutting member. The disassembly process of the cutting piece is more convenient and faster, the disassembly and replacement of the cutting piece can be completed without disassembling the shell assembly, and the convenience of the pipe cutting tool handle is improved.

The utility model discloses an in the embodiment, first round pin axle is seted up and is supplied second round pin axle to stretch into and complex mating holes, and second round pin axle is equipped with the cooperation portion with mating holes matched with, and second round pin axle is fixed through cooperation portion and mating holes cooperation to fixed first round pin axle.

So set up, can dismantle fixedly through the cooperation realization between first round pin axle and the second round pin axle, dismantlement or fixed connection operation between the two convenient and fast more, change in that general user masters rapidly.

In one embodiment of the present invention, the second pin comprises an auxiliary dismounting member for being held by hand, the auxiliary dismounting member is disposed at an end of the second pin relatively far from the first pin and located outside the housing assembly; the dismounting auxiliary part can drive the matching part of the second pin shaft to extend into or separate from the matching hole; the dismounting auxiliary part and the second pin shaft are integrally formed or are arranged separately from the second pin shaft.

With the arrangement, a user can directly operate the dismounting auxiliary part to drive the second pin shaft to move, so that the first pin shaft is fastened or loosened, the first pin shaft is dismounted and replaced by bare-handed operation, and other external tools are not needed; the dismouting auxiliary member sets up the handheld operation of being more convenient for outside housing assembly, need not to dismantle housing assembly moreover, has reduced and has torn open consuming time and the material resources input of trading the process.

The utility model discloses an in the embodiment, the casing subassembly is close to the lateral wall of dismouting auxiliary member relatively and has been seted up heavy groove, and heavy groove is used for holding dismouting auxiliary member.

So set up, after second round pin axle and first round pin axle fixed connection, the dismouting auxiliary member can the holding in heavy groove, and heavy groove can prevent that user's hand accident from touching the dismouting auxiliary member or rather than taking place to interfere, and then the second round pin axle of unscrewing to it is safer when guaranteeing that the user carries out pipe fitting cutting operation.

In one embodiment of the present invention, the pin assembly includes a pressing member and a limiting pin, and the pressing member is fixedly connected to the limiting pin; the limiting pin shaft penetrates through a through hole in the cutting piece, and the limiting pin can penetrate through or be separated from the cutting piece under the driving of the pressing piece.

So set up, the user can relieve spacing round pin axle through the mode of pushing down and pressing the pressing part and wear to establish the cutting piece to realize the dismantlement and the installation of cutting piece, the dismouting process of cutting piece is simpler, the operation is swift, need not to dismantle housing assembly.

In an embodiment of the present invention, the pin shaft assembly further includes a return elastic member, one end of the return elastic member abuts against the pressing member, and the other end abuts against the housing assembly; the elastic part that resets can drive the through-hole on the cutting member is worn to establish by spacing round pin axle through self resilience.

So set up for pipe cutting tool handle can the spacing round pin axle of automatic re-setting's function, dismantle when the cutting member and accomplish and install the back again, only need the locking holding down force to the pressing piece of user, can make spacing round pin axle automatic re-setting and wear to establish the cutting member through-hole once more, is showing ease of use and the convenience that has improved pipe cutting tool handle.

In one embodiment of the present invention, the housing assembly is provided with a second channel, the pressing member includes a linkage shaft, and the linkage shaft penetrates through the second channel; the pressing piece can move along the axial direction of the second channel and drive the limiting pin shaft to penetrate through or be separated from the through hole in the cutting piece.

So set up, when the user pushed down the pressing piece, the universal driving shaft can drive the axis direction motion of pressing piece along the second passageway, therefore the motion trail of pressing piece is more accurate, can avoid taking place the incline relative casing subassembly when the pressing piece atress, and the user pushes down to press and moves laborsaving, smooth-going more.

The utility model discloses an in the embodiment, parallel arrangement between universal driving shaft and the spacing round pin axle.

So set up, the in-process of pressing the piece is pushed down to the user, and the universal driving shaft is simultaneously along second passageway axial motion, thereby can drive spacing round pin axle equidirectional motion and deviate from or wear to establish cutting member through-hole, and spacing round pin axle can wear to establish more smoothly or deviate from cutting member through-hole, avoids spacing round pin axle relative cutting member through-hole card to pause.

The utility model also provides a pipe cutting means, pipe cutting means include cutting member and the arbitrary pipe cutting means handle of one of the aforesaid, and the through-hole that supplies the round pin axle subassembly to wear to establish is seted up to the cutting member, and the cutting member can be dismantled with the round pin axle subassembly and rotate and be connected.

The utility model provides a pipe cutting tool handle makes cutting member detachably install on casing assembly through round pin axle subassembly, and convenient to use person dismantles or changes the cutting member at any time, and need not to dismantle casing assembly repeatedly to fastener or setting element in avoiding casing assembly lose the condition and take place, prevent that casing assembly from dismantling many times and warp, break. Thus, the pipe cutting tool handle may be fitted with different forms of cutting elements or worn cutting elements may be replaced, thereby increasing the number of uses of the pipe cutting tool handle.

Drawings

Fig. 1 is a schematic structural view of a pipe cutting tool according to a first embodiment of the present invention;

FIG. 2 is a cross-sectional view of the pipe cutting tool of FIG. 1 at A-A;

FIG. 3 is a schematic view of a portion of the pipe cutting tool of FIG. 1;

FIG. 4 is a schematic view of the structure of the handle of the pipe cutting tool according to the first embodiment of the present invention;

FIG. 5 is a schematic structural view of a pipe cutting tool according to a second embodiment of the present invention;

FIG. 6 is a schematic view of the pipe cutting tool of FIG. 5 taken at B-B;

FIG. 7 is a sectional view of the pipe cutting tool shown in FIG. 6 in a state where a pressing member is pressed down;

FIG. 8 is a schematic view of a portion of the pipe cutting tool of FIG. 5;

fig. 9 is a partially disassembled schematic view of the pipe cutting tool of fig. 5.

100. A tube cutting tool handle; 10. a housing assembly; 11. a first stationary housing; 111. a first handle portion; 12. a second stationary housing; 121. a second handle portion; 122. an inner concave portion; 13. a first movable housing; 131. a third handle portion; 14. a first channel; 15. a second channel; 16. a third channel; 17. sinking a groove; 18. the reset elastic piece accommodating cavity; 20. a pin assembly; 21. a first pin shaft; 211. a mating hole; 212. a first diameter-expanding portion; 22. a second pin shaft; 221. a fitting portion; 222. a second diameter-expanding portion; 2221. a shifting ring inserting hole; 2222. screwing grooves; 23. a pressing member; 231. a linkage shaft; 232. pressing the flat plate portion; 24. a limiting pin shaft; 25. a restoring elastic member; 26. disassembling and assembling the auxiliary parts; 261. ring shifting; 27. a connecting member; 272. fixing the bayonet; 273. a threaded connector; 200. a tube cutting tool; 250. cutting the piece; 251. a through hole; 252. a first limit groove; 253. limiting the tooth projection; 254. a blade portion; 255. a rack; 256. a second limit groove; 40. a first elastic member; 60. a first elastic mechanism; 61. a third elastic member; 62. a first pawl; 70. a second elastic mechanism; 71. a fourth elastic member; 72. a second pawl; 80. locking; 90. and a positioning pin.

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 work all belong to the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a pipe cutting tool 200 according to a first embodiment of the present invention; FIG. 2 is a schematic cross-sectional view of the pipe cutting tool 200 of FIG. 1 at A-A; FIG. 3 is a schematic diagram of a portion of the pipe cutting tool 200 shown in FIG. 1; fig. 4 is a schematic view of a pipe cutting tool handle 100 according to a first embodiment of the present invention.

The pipe cutting tool is used for manually cutting pipe fittings and comprises a shell assembly and a cutting piece movably mounted on the shell assembly. The user places the pipe to be cut in the space between the cutting member and the housing assembly by holding the handle portion of the pipe cutting tool, and repeatedly applies a gripping force to rotate the cutting member relative to the housing assembly, thereby gradually cutting off the pipe by the cutting member. Commonly used cutting members include tube cutters.

The utility model provides a pipe cutting tool handle 100 can dismantle with the pipe cutter and be connected and supporting use, including the casing subassembly 10 that is used for holding cutting member 250.

Specifically, the housing assembly 10 includes a first fixed housing 11, a second fixed housing 12, and a first movable housing 13. The first fixed shell 11 and the second fixed shell 12 are mutually spliced to form a fixed shell with a built-in cavity, and the cutting piece 250 is movably arranged in the built-in cavity; the first movable housing 13 is rotatably connected between the first fixed housing 11 and the second fixed housing 12.

The first stationary housing 11 comprises a first handle portion 111 and the second stationary housing 12 comprises a second handle portion 121. After the first fixed shell 11 and the second fixed shell 12 are spliced, the first handle part 111 and the second handle part 121 are spliced to form a fixed handle; the first movable housing 13 includes a third handle portion 131. when the first movable housing 13 rotates relative to the fixed housing, the third handle portion 131 rotates relative to the fixed handle and forms an included angle with the fixed handle or is close to the fixed handle.

In addition, a first elastic element 40 is installed in the built-in cavity of the fixed shell, one end of the first elastic element 40 is connected with the cutting element 250, and the other end abuts against the inner wall of the second fixed shell 12; the first elastic member 40 is in a compressed state, has potential energy for pushing the cutting member 250 to rotate relative to the fixed housing, and can drive the cutting member 250 to rotate and make the cutting edge 254 of the cutting member 250 away from the fixed housing, so as to form an included angle or a gap for placing a pipe to be cut between the cutting member and the fixed housing.

Preferably, the first elastic member 40 is a first torsion spring, one end of which abuts against an abutting groove on the cutting member 250, and the other end of which abuts against an abutting wall inside the second fixed housing 12.

In order to facilitate cutting the pipe, one side of the fixed casing close to the cutting edge portion 254 is recessed inwards to form an inner concave portion 122, and the edge of the inner concave portion 122 is arc-shaped and is arranged opposite to the cutting edge portion 254 of the cutting member 250. A gap for placing a pipe to be cut is formed between the inner concave part 122 and the cutting edge part 254, and the peripheral wall of the pipe to be cut can abut against the edge of the inner concave part 122 and the edge of the cutting edge part 254.

Further, the housing assembly 10 further includes a first elastic mechanism 60 and a second elastic mechanism 70, the first elastic mechanism 60 can generate a pushing force on the cutting member 250, and includes a third elastic member 61 and a first pawl 62, one end of the third elastic member 61 abuts against the third handle portion 131, the other end abuts against the first pawl 62, and the first pawl 62 abuts against an outer edge of the cutting member 250; the first elastic means 60, acting together with the first elastic element 40 on the cutting element 250, can keep the cutting element 250 stationary.

The second elastic mechanism 70 is used to drive the cutting member 250 to rotate intermittently relative to the housing assembly 10 so as to perform the pipe cutting step by step. In order to realize the intermittent rotation of the cutting member 250, the edge of the cutting member 250 is provided with a rack 255, the second elastic mechanism 70 comprises a fourth elastic member 71 and a second pawl 72, one end of the fourth elastic member 71 abuts against the third handle part 131, the other end of the fourth elastic member abuts against the second pawl 72, and the second pawl 72 abuts against the rack 255 at the edge of the cutting member 250 and is embedded in the groove between the two adjacent limiting tooth protrusions 253.

The user can repeatedly exert the holding force on the fixed handle and the third handle portion 131 in the process of cutting the pipe, the first movable housing 13 rotates relative to the fixed housing and is always abutted to the third elastic member 61 and the fourth elastic member 71, the first elastic member 40 is always abutted to the outer edge of the cutting member 250, the first elastic mechanism 60 can drive the first pawl 62 to repeatedly disengage from and abut against the cutting member 250, the second elastic mechanism 70 can drive the second pawl 72 to repeatedly abut against and disengage from the rack 255 of the cutting member 250, so that the intermittent rotation of the cutting member 250 is realized, the second pawl 72 can gradually abut against the other end from one end abutted to the other end of the rack 255, and meanwhile, the distance between the cutting member 250 and the concave portion 122 is gradually reduced until the second pawl is close to the concave portion 122.

Further, the first stationary housing 11 further includes a latch 80, and the latch 80 is rotatably connected to the end of the first handle portion 111 for fixing the third handle portion 131 and the stationary handle. When the first movable housing 13 rotates relative to the fixed housing and approaches the first handle portion 111 and the second handle portion 121, the lock catch 80 can fix the first handle portion 111 or the second handle portion 121 and the third handle portion 131, so that the cutting member 250 can be folded into the housing assembly 10 when the pipe cutting tool is not used.

In addition, a positioning pin 90 is further disposed on the fixing housing in a penetrating manner, and the positioning pin 90 is used for stopping the cutting member 250. Specifically, the cutting member 250 is provided with a first limiting groove 252 and a second limiting groove 256 which can abut against the positioning pin 90, and the distances from the first limiting groove 252 and the second limiting groove 256 to the through hole 251 are equal. When the first limiting groove 252 abuts against the positioning pin 90, the cutting member 250 is folded in the housing assembly 10; when the second limiting groove 256 abuts against the positioning pin 90, the distance between the cutting member 250 and the inner concave portion 122 is the largest, so that the pipe to be cut can be conveniently placed between the cutting member 250 and the inner concave portion 122.

The cutting member of current pipe cutting means usually can not directly be dismantled and change, to having seriously worn and torn, the pipe cutting means who waits to change the new cutter needs to dismantle its whole casing or handle, then takes out and waits to change the cutter, needs to adorn casing or handle back again after the change is accomplished. Fasteners, locating elements or other accessories used to secure the housing or handle are easily lost during removal and replacement of the tool; it also tends to deform or crack the housing or handle, thereby reducing the useful life of the pipe cutting tool.

In view of this, the utility model provides a pipe cutting tool handle 100 still includes round pin axle assembly 20, and casing assembly 10 is equipped with passageway or the cavity that is used for holding round pin axle assembly 20, and round pin axle assembly 20 sets up in casing assembly 10 to can wear to establish through-hole 251 on the cutting member 250, round pin axle assembly 20 can follow the axial motion of through-hole 251 of cutting member 250 and wear to establish or deviate from cutting member 250, make cutting member demountable installation in casing assembly 10.

The following is a pipe cutting tool handle 100 according to a first embodiment of the present invention. In this embodiment, the pin assembly includes a first pin 21 and a second pin 22 that are detachably connected, the housing assembly 10 is provided with a first channel 14 through which the first pin 21 passes, and the first pin 21 can move in the first channel 14; and the first pin 21 can also penetrate through the through hole 251 of the cutting member 250, the first pin 21 can penetrate through or be separated from the through hole 251 of the cutting member 250 when moving in the first channel 14, and when the second pin 22 is fixedly connected with the first pin 21, the second pin 22 fixes the first pin 21 and the housing assembly 10.

Specifically, the first pin 21 is provided with a matching hole 211 for the second pin 22 to extend into and match, the second pin 22 is provided with a matching portion 221 matching with the matching hole 211, and the second pin 22 is fixed to the matching hole 211 through the matching portion 221, so as to fix the first pin 21.

Preferably, the first pin 21 and the second pin 22 are connected by screw thread fit. The threaded connection mode is more reliable and stable, the locking and fixing effect of the second pin shaft 22 on the first pin shaft 21 is better, and the cutting part 250 can be prevented from shaking relative to the shell assembly 10 due to poor fixing of the first pin shaft 21; accordingly, the engaging portion 221 is an external threaded section provided on the second pin 22, and the engaging hole 211 is an internal threaded hole provided on the first pin 21.

Please refer to fig. 2 to fig. 4 again. The first fixing shell 11 and the second fixing shell 12 are respectively provided with through holes with the same size and shape, and when the first fixing shell 11 and the second fixing shell 12 are spliced with each other, the two through holes are oppositely arranged and form a first channel 14 for the first pin 21 to penetrate through; a central hole with internal threads is formed in the end part of the first pin shaft 21 along the axis direction of the first pin shaft, external threads are formed in the peripheral wall of the second pin shaft 22, and the second pin shaft 22 can extend into the central hole and is connected with the internal threads of the central hole in a matched mode; in addition, the end of the first pin 21 relatively far from the second pin 22 is provided with a first expanded diameter part 212 capable of abutting against the outer surface of the housing assembly 10, and the outer diameter of the first expanded diameter part 212 is larger than the inner diameter of the first channel 14.

The second pin 22 can screw the first pin 21 until the first expanded diameter portion 212 abuts against the outer surface of the housing assembly 10, and at this time, the first pin 21 and the housing assembly 10 are fixed by the second pin 22, so that the first pin 21 cannot be removed from the first channel 14 or the through hole 251; when the second pin 22 is screwed out from the central hole, the first pin 21 is unlocked, and at this time, the first pin 21 can be axially taken out from the first channel 14 and the through hole 251, so that the state that the first pin 21 penetrates the through hole 251 is released, and the cutting member 250 is detached.

The first pin 21 is provided with a center hole for the second pin 22 to penetrate through, which is only one embodiment of the present invention, it can be understood that the second pin 22 can also be provided with a center hole for the first pin 21 to penetrate through along the axis direction, and the two are in threaded connection; the number of the second pins 22 is not limited to one, and may be multiple, that is, the end of the first pin 21 is provided with a plurality of central holes for the second pins 22 to penetrate through along the axis direction; in addition, the axis of the center hole may be relatively offset from the axis of the first pin 21.

Preferably, the central hole coincides with the axis of the first pin 21, so as to facilitate the machining of the central hole.

It is understood that in other embodiments, the matching connection between the first pin 21 and the second pin 22 may also be a tight fit formed by inserting and pulling the matching portion 221 into and out of the matching hole 211, the matching portion 221 and the matching hole 211 may be clamped or engaged with each other, or the matching portion 221 and the matching hole 211 are respectively configured as a lock cylinder and a lock tooth, etc. that can be lockingly connected with each other. The above-mentioned first pin 21 and the second pin 22 are fixed in a matching manner, and will not be described in detail.

It should be noted that, for example, a technical solution in which a central hole having an internal thread is formed in the second pin 22 and an external thread section engaged with the central hole is formed in the first pin 21 is provided in the first pin 21, and the engagement hole is formed in the second pin 22, belongs to an alternative solution having an equivalent technical effect made under the spirit of the present embodiment.

Further, in order to facilitate the user to operate with bare hands, the second pin 22 includes a hand-holding auxiliary device 26, and the auxiliary device 26 is disposed at an end of the second pin 22 relatively far from the first pin 21 and outside the housing assembly 10; the auxiliary dismounting member 26 can drive the engaging portion 221 of the second pin 22 to extend into or separate from the engaging hole 211.

Specifically, in the present embodiment, the second pin 22 further includes a second expanded diameter portion 222, and the second expanded diameter portion 222 is located at one end of the second pin 22 relatively far from the first pin 21 and extends out of the housing assembly 10; the disassembly and assembly auxiliary part 26 is preferably a shifting ring 261, the shifting ring 261 is approximately C-shaped, U-shaped or rectangular with one open side, the bending part of the shifting ring 261 is grabbed by the hand of a user, and the outer peripheral wall of the second diameter-expanding part 222 is provided with shifting ring inserting holes 2221 for two ends of the shifting ring 261 to extend into; the dial ring 261 can rotate relative to the second pin 22 around a connection line of the two dial ring insertion holes 2221 extending into the second diameter-expanding portion 222, that is, an axis of the dial ring 261 rotating relative to the second pin 22 is perpendicular to an axis direction of the second pin 22.

With such an arrangement, a user can apply a moment perpendicular to the axial direction of the second pin 22 to the outer side wall of the toggle ring 261 to drive the second pin 22 to rotate relative to the first pin 21, so that the second pin 22 and the first pin 21 are screwed or unscrewed without the help of other external tools; in addition, the dial ring 261 is easier to be installed on the second pin 22, and only two ends of the dial ring 261 need to be inserted into the two dial ring insertion holes 2221 located on the outer peripheral wall of the second pin 22; in addition, dial ring 261 sets up the tip that stretches out casing subassembly 10 at second round pin axle 22, need not to dismantle casing subassembly 10 when dismantling first round pin axle 21 and second round pin axle 22, has reduced the consuming time and the material resources input of tearing open the change process.

Of course, the second pin 22 can be removed not only by operating the auxiliary dismounting member 26, but also by forming a groove 2222 in the end surface of the second enlarged diameter portion 222 of the second pin 22 located outside the housing assembly 10, and by using an external tool to cooperate with the groove 2222 to screw or unscrew the second pin 22; in addition, the form of the auxiliary dismounting part 26 is not limited to the toggle ring 261 in this embodiment, and may also be a device with other structure or type, the auxiliary dismounting part 26 and the second pin 22 may be separately arranged, or may be integrally formed with the second pin 22, as long as the user can directly manually operate and drive the second pin 22 to fix or loosen the first pin 21, and the fixing of the second pin 22 to the first pin 21 is released.

Furthermore, in order to prevent the dial ring 261 from being touched by mistake, the side wall of the housing assembly 10 relatively close to the dial ring 261 is provided with a sinking groove 17, and the sinking groove 17 is lower than the end portion of the second pin 22 located outside the housing assembly 10, so as to form a space capable of accommodating the dial ring 261. After the second pin 22 is screwed with the first pin 21, the dial ring 261 is rotated to be close to the bottom wall of the sinking groove 17, so that the second pin is accommodated in the sinking groove 17, and the user is prevented from touching the dial ring 261 by mistake to unscrew the second pin 22, so that the reliability and safety of the pipe cutting operation are improved, and the sinking groove 17 can also be used for accommodating other forms of dismounting auxiliary parts 26.

The present embodiment provides a pipe cutting tool handle 100 with improved reliability of the pin assembly 20. The user only needs to dismantle second round pin axle 22 from first round pin axle 21, removes the fixed state of second round pin axle 22 to between first round pin axle 21 and housing assembly 10 to take out first round pin axle 21 from housing assembly 10 and can dismantle cutting member 250, and the dismantlement change process of cutting member 250 is swift easy.

The disassembly process of the cutting member 250 of the pipe cutting tool handle 100 of the present embodiment is as follows: firstly, the lock catch 80 is loosened to release the fixed connection between the fixed handle and the third handle part 131, the first movable housing 13 is rotated to make the third handle part 131 relatively far away from the fixed handle, at this time, the first elastic mechanism 60 and the second elastic mechanism 70 loosen the cutting piece 250, that is, the first pawl 62 and the second pawl 72 are both separated from the cutting piece 250, the cutting piece 250 is driven by the first elastic piece 40 to deflect and far away from the inner concave part 122 of the fixed housing until the first limit groove 252 of the cutting piece 250 abuts against the positioning pin 90; at this time, the user detaches the second pin 22 from the first pin 21, releases the fixed state of the first pin 21 to the housing assembly 10, and then removes the first pin 21 from the first channel 14 and the cutter 250 from the housing assembly 10.

Referring to fig. 5 to 9, fig. 5 is a schematic structural view of a pipe cutting tool 200 according to a second embodiment of the present invention; FIG. 6 is a schematic view of the pipe cutting tool 200 of FIG. 5 taken at B-B; fig. 7 is a sectional view of the pipe cutting tool 200 shown in fig. 6 in a state where a pressing member is pressed down; FIG. 8 is a schematic diagram of a portion of the pipe cutting tool 200 shown in FIG. 5; fig. 9 is a partially disassembled schematic view of the pipe cutting tool 200 shown in fig. 5.

The following is a pipe cutting tool handle 100 according to a second embodiment of the present invention, the pipe cutting tool handle 100 according to the second embodiment being substantially the same as the first embodiment except that the detachable mounting of the cutting member 250 is achieved by a manual pressing manner by a user. In this embodiment, the pin assembly 20 includes a pressing member 23 and a limit pin 24, and the pressing member 23 is fixedly connected to the limit pin 24; the through hole 251 of the cutting member 250 can be penetrated by the limit pin shaft 24, the user can press the pressing member 23 to move the pressing member, and the limit pin shaft 24 can penetrate or be separated from the cutting member 250 under the driving of the pressing member 23.

Please refer to fig. 6 to 9 again. Specifically, the pressing piece 23 includes a pressing flat plate portion 232 and a linkage shaft 231, and the linkage shaft 231 and the pressing flat plate portion 232 are integrally formed; the shell assembly 10 is provided with a second channel 15 for the universal driving shaft 231 to penetrate through and a third channel 16 for the limiting pin shaft 24 to penetrate through, the second channel 15 and the third channel 16 are arranged in parallel, namely the universal driving shaft 231 and the limiting pin shaft 24 are arranged in parallel; the limit pin shaft 24 is fixedly connected with the linkage shaft 231 through the connecting piece 27, one end of the connecting piece 27 is provided with a fixed bayonet 272 for the limit pin shaft 24 to extend into, the other end of the connecting piece 27 is provided with a threaded connecting port 273 for a fastener to penetrate through, and the shell assembly 10 is provided with a connecting piece accommodating cavity for accommodating the connecting piece 27; the limit pin 24 extends into the fixed bayonet 272 and forms a tight fit with the inner wall surface of the fixed bayonet 272, and the linkage shaft 231 is connected with the connecting piece 27 through a connecting screw penetrating in the threaded connecting port 273.

With such an arrangement, in the process that the user presses the pressing plate portion 232, the linkage shaft 231 moves in the second channel 15 and drives the limit pin 24 to move in the third channel 16 through the connecting member 27, and when the pressing member 23 is pressed to the lowest point, the limit pin 24 is pulled out from the through hole 251 of the cutting member 250, so that the cutting member 250 can be detached. The pressing operation mode enables the dismounting process of the cutting piece 250 to be simpler and more labor-saving, the linkage shaft 231 drives the limiting pin shaft 24 to move in the same direction, and the cutting piece 250 is dismounted more quickly.

Further, the pin assembly 20 further includes a restoring elastic member 25, one end of the restoring elastic member 25 abuts against the pressing member 23, and the other end abuts against the housing assembly 10; the reset elastic piece 25 is in a compressed state, and can drive the limit pin shaft 24 to reset again through self resilience and penetrate through the through hole 251 in the cutting piece 250.

Preferably, the elastic restoring element 25 is a cylindrical compression spring, one side of the pressing flat plate portion 232 relatively close to the housing assembly 10 is provided with a plane abutting against the compression spring, the housing assembly 10 is provided with an inward-concave elastic restoring element accommodating cavity 18, the compression spring is sleeved on the outer peripheral wall of the linkage shaft 231, one end of the compression spring abuts against the pressing flat plate portion 232, and the other end of the compression spring abuts against the bottom wall of the elastic restoring element accommodating cavity 18. The user pushes down the pressing part 23, and overcomes the restoring force of the compression spring, so that the limit pin shaft 24 is separated from the through hole of the cutting part 250, when the hand of the user is loosened, the compression spring generates the restoring force for pressing the flat plate part 232, so that the linkage shaft 231 is pushed to move in a resetting manner, the linkage shaft 231 simultaneously drives the limit pin shaft 24 to move in a resetting manner through the connecting part 27 until the connecting part 27 abuts against the bottom wall of the accommodating cavity of the connecting part, and at the moment, the limit pin shaft 24 penetrates through the through hole 251 of the cutting part 250 again.

So set up for pipe cutting tool handle 100 can the automatic re-setting limit pin axle 24's function, dismantle when cutting piece 250 and accomplish and install the back again, only need the locking lapse to pressing piece 23 of user, can make limit pin axle 24 automatic re-setting and wear to establish cutting piece 250 through-hole 251 once more, is showing the ease for use and the convenience that have improved pipe cutting tool handle 100.

The pipe cutting tool handle 100 provided by the embodiment is simple and convenient to operate, a user can remove the cutting piece 250 by pressing down the pressing piece 23, so that the cutting piece 250 can be detached, the limiting pin shaft 24 can be reset by loosening the pressing piece 23, the through hole 251 of the cutting piece 250 is penetrated again, and the shell assembly 10 does not need to be detached.

The disassembly process of the cutting member 250 of the pipe cutting tool handle 100 of the present embodiment is as follows: firstly, the lock catch 80 is loosened to release the fixed connection between the fixed handle and the third handle part 131, the first movable housing 13 is rotated to make the third handle part 131 relatively far away from the fixed handle, at this time, the first elastic mechanism 60 and the second elastic mechanism 70 loosen the cutting piece 250, that is, the first pawl 62 and the second pawl 72 are both separated from the cutting piece 250, the cutting piece 250 is driven by the first elastic piece 40 to deflect and far away from the inner concave part 122 of the fixed housing until the first limit groove 252 of the cutting piece 250 abuts against the positioning pin 90; at this time, the user manually presses the pressing member 23 to move the linkage shaft 231 in the second channel 15, and at the same time, the linkage shaft 231 drives the limit pin 24 to move in the third channel 16 through the connecting member 27 until the limit pin 24 is out of the through hole 251 of the cutting member 250, and then the cutting member 250 is taken out of the housing assembly 10.

The utility model provides a pipe cutting tool handle 100 makes cutting member 250 detachably install on casing assembly 10 through round pin axle assembly 20, and convenient to use person dismantles or changes cutting member 250 at any time, and need not to dismantle casing assembly 10 repeatedly to fastener or setting element in avoiding casing assembly 10 lose, prevent that casing assembly 10 from dismantling many times and taking place to warp and break. Thus, it is possible to fit different forms of cutting members 250 to the pipe cutting tool handle 100 or to replace worn cutting members 250, thereby increasing the number of uses of the pipe cutting tool handle 100.

The utility model also provides a pipe cutting tool 200, including cutting member 250 and the pipe cutting tool handle 100 of any one of the above-mentioned, cutting member 250 sets up the through-hole 251 that supplies the round pin axle subassembly 20 to wear to establish, can dismantle between cutting member 250 and the round pin axle subassembly 20 and rotate and be connected.

The utility model provides a pipe cutting tool 200 makes cutting member 250 detachably install on casing assembly 10 through round pin axle assembly 20, and convenient to use person dismantles or changes cutting member 250 at any time, and need not to dismantle casing assembly 10 repeatedly to fastener or setting element in avoiding casing assembly 10 lose, prevent that casing assembly 10 from dismantling many times and taking place to warp and break, and improve pipe cutting tool 200's life.

The features of the above-described embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above-described embodiments are not described, but should be construed as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the features.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.

Claims (10)

1. A pipe cutting tool handle comprising a pin assembly (20) and a housing assembly (10); the cutting device is characterized in that the shell assembly (10) is used for accommodating the cutting piece (250), the pin shaft assembly (20) is arranged in the shell assembly (10) and can penetrate through a through hole (251) in the cutting piece (250), and the pin shaft assembly (20) can move axially along the through hole (251) in the cutting piece (250) and penetrate through or separate from the cutting piece (250), so that the cutting piece (250) can be detachably installed in the shell assembly (10).

2. The pipe cutting tool handle according to claim 1, wherein the pin assembly (20) comprises a first pin (21) and a second pin (22), the first pin (21) and the second pin (22) are detachably connected, and the housing assembly (10) is provided with a first channel (14) for the first pin (21) to pass through; the first pin shaft (21) can move in the first channel (14) and penetrate through or separate from the cutting piece (250), and the second pin shaft (22) can fix the first pin shaft (21) and the shell assembly (10).

3. The pipe cutting tool handle according to claim 2, wherein the first pin (21) is formed with a fitting hole (211) into which the second pin (22) is inserted and fitted, the second pin (22) is formed with a fitting portion (221) fitted with the fitting hole (211), and the second pin (22) is fitted and fixed with the fitting hole (211) through the fitting portion (221), thereby fixing the first pin (21).

4. The pipe cutting tool handle according to claim 3, wherein the second pin (22) comprises a hand gripping disassembly aid (26), the disassembly aid (26) being disposed at an end of the second pin (22) relatively distant from the first pin (21) and outside the housing assembly (10); the dismounting auxiliary part (26) can drive the matching part of the second pin shaft (22) to extend into or separate from the matching hole (211); the dismounting auxiliary part (26) and the second pin shaft (22) are integrally formed, or the dismounting auxiliary part and the second pin shaft (22) are arranged in a split mode.

5. The pipe cutting tool handle according to claim 4, wherein the side wall of the housing assembly (10) relatively close to the disassembly and assembly aid (26) is provided with a sunken groove (17), and the sunken groove (17) is used for accommodating the disassembly and assembly aid (26).

6. The pipe cutting tool handle according to claim 1, wherein the pin assembly (20) comprises a pressing piece (23) and a limit pin (24), the pressing piece (23) and the limit pin (24) are fixedly connected; the limiting pin shaft (24) penetrates through a through hole (251) in the cutting piece (250), and the limiting pin shaft (24) can penetrate through or be separated from the cutting piece (250) under the driving of the pressing piece (23).

7. The pipe cutting tool handle according to claim 6, wherein the pin assembly (20) further comprises a return elastic member (25), one end of the return elastic member (25) abuts against the pressing member (23), and the other end abuts against the housing assembly (10); the reset elastic piece (25) can drive the limit pin shaft (24) to penetrate through the through hole (251) in the cutting piece (250) through self resilience.

8. The pipe cutting tool handle according to claim 6, wherein the housing assembly (10) defines a second channel (15), the pressing member (23) includes a linkage shaft (231), and the linkage shaft (231) is disposed through the second channel (15); the pressing piece (23) can move along the axial direction of the second channel (15) and drives the limiting pin shaft (24) to penetrate through or be separated from the through hole (251) in the cutting piece (250).

9. The pipe cutting tool handle according to claim 8, wherein the linkage shaft (231) and the limit pin (24) are arranged in parallel.

10. A pipe cutting tool, characterized in that, pipe cutting tool includes cutting member (250) and the pipe cutting tool handle of any one of claims 1-9, cutting member (250) offers confession round pin axle assembly (20) wears to establish through-hole (251), cutting member (250) with round pin axle assembly (20) can dismantle the rotation and be connected.

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