TWM522782U - Tube expander - Google Patents

Description

Expander

This creation is related to the expander, especially for a expander that reduces friction.

The structure of the general expander is disclosed in the patent TWM256241, which comprises at least one body and two clamping blocks. The two clamping blocks are formed with slots and can be correspondingly disposed at the bottom of the body. There is a bolt that can be rotated up and down.

However, the expander structure as described above is not capable of protecting the pipe member during the pipe expanding operation from being damaged by excessive pressure, causing work failure and wasting part materials; in addition, when the user reverses the use, the user is prone to sprain; How to improve the structure to improve the smoothness and efficiency of the operation and maintain the quality of use is also the goal of this creative work.

Therefore, it is necessary to provide a novel and progressive expander to solve the above problems.

The main purpose of this creation is to provide a pipe expander that protects the pipe from damage caused by excessive pressing, and reduces the friction of the work. The user can smoothly rotate when used, which can improve the smoothness and efficiency of the work. In addition, the quality of the product can be maintained and the service life of the product can be improved. In addition, idling can be generated at the end of the reverse rotation to avoid causing The user has a sprain or the like.

In order to achieve the above object, the present invention provides a pipe expander comprising: a body having a sleeve hole for inserting a pinch tube assembly, the body being provided with a connection hole communicating with the sleeve hole; a connector Removably inserting the connecting hole; a drive shaft assembly coupled to the connecting member and operable to drive the connecting member to move, the drive shaft assembly having a reaming head movable toward the collet assembly Providing an elastic member and at least one Palin assembly between the connecting member and the reaming head, the elastic member having an elastic force capable of pushing the at least one Palin component and the connecting member and the reaming head At least one of them is adjunctive.

1‧‧‧ Expander

10‧‧‧ Ontology

11‧‧‧ Set of holes

12‧‧‧connection hole

13‧‧‧ Internal teeth

14‧‧‧ Inner ring

20‧‧‧Connecting parts

21‧‧‧External teeth

211‧‧‧ external thread

212‧‧‧ Smooth section

22‧‧‧ accommodating holes

30‧‧‧Drive shaft assembly

31‧‧‧ Drive Department

32‧‧‧ Reaming head

321‧‧‧Conical head

33‧‧‧ pole

40‧‧‧Pinch assembly

41‧‧‧ Pipe fittings

50‧‧‧Flexible parts

60‧‧ ‧ Palin components

61‧‧ ‧ Palin ring

62‧‧‧ spacers

FIG. 1 is a schematic diagram of a preferred embodiment of the present invention.

Figure 2 is an exploded view of the preferred embodiment of the present invention.

Figure 3 is a schematic view showing the state of use of the preferred embodiment of the present invention.

4 is a schematic diagram of another use state of the preferred embodiment of the present invention.

The structural features of the present invention and the intended effects thereof will be described below by way of a preferred embodiment, but are not intended to limit the scope of the present invention.

Referring to FIG. 1 to FIG. 4, a preferred embodiment of the present invention is shown. A pipe expander 1 of the present invention comprises a body 10, a connecting member 20 and a drive shaft assembly 30.

The body 10 can have a sleeve hole 11 for inserting a tube assembly 40. The body 10 can be provided with a connection hole 12 communicating with the sleeve hole 11. The inner circumference of the connection hole 12 can be An inner tooth portion 13 is provided. For example, the inner tooth portion 13 can be disposed in a detachable assembly. The inner ring member 14 is on the inner ring member 14. The connecting member 20 is movably inserted into the connecting hole 12, and the outer peripheral surface of the connecting member 20 can be provided with an outer tooth portion 21, and the outer tooth portion 21 can be screwed with the inner tooth portion 13, so that the connecting portion The member 20 is rotatable relative to the body 10.

The drive shaft assembly 30 is connectable with the connecting member 20 and is operable to drive the connecting member 20 to move. Further, the driving shaft assembly 30 can include a driving portion 31 that can be disengaged. The grounding member is engaged with the connecting member 20, and when the user drives the driving portion 31, the connecting member 20 can be simultaneously rotated to move upward or downward. The drive shaft assembly 30 can have a reaming head 32 that is movable toward the collet assembly 40. More specifically, when the user drives the drive portion 31, the reaming head 32 can be interlocked simultaneously. Moving toward the pinch tube assembly 40 allows the pipe member 41 provided in the pinch tube assembly 40 to be expanded. The driving portion 31 is rotatable in a forward rotation direction or a reverse rotation direction. When the driving portion 31 rotates in the normal rotation direction, the reaming head portion 32 moves toward the pinch tube assembly 40 when the driving portion 31 is along When the reverse direction is rotated, the reaming head 32 moves away from the pinch tube assembly 40.

An elastic member 50 and at least one Palin assembly 60 are disposed between the connecting member 20 and the reaming head 32. The elastic member 50 has an elastic force capable of pushing the at least one Palin assembly 60 and the connecting member 20 and At least one of the reaming heads 32 abuts. For example, in the embodiment, the at least one Palin assembly 60 includes a Palin assembly 60 that can push the Palin assembly 60. It abuts against the reaming head 32. In other possible embodiments, the at least one Palin assembly 60 can also include two Palin assemblies 60 that can push the Erbelin assembly 60 and the connecting member 20 and the reaming head, respectively. The part 32 abuts.

Further, the reaming head 32 can be disposed inside the body 10 and adjacently disposed at one end of the connecting member 20, and the reaming head 32 can be moved relative to the connecting member 20, The resilient member 50 can also cause the reaming head 32 to move normally away from the connector 20. The drive shaft assembly 30 can include a rod portion 33 through which the rod portion 33 is inserted, and one end of the rod portion 33 is fixedly coupled to the drive portion 31 for rotation, and the other portion of the rod portion 33 The end is connected to the reaming head 32. The reaming head 32 may further include a conical head 321 which is disposed obliquely to the axial direction of the rod portion 33.

The Palin assembly 60 can have a Palin ring 61 and a spacer 62. The spacer 62 can be disposed between the Palin ring 61 and the elastic member 50. Further, the elastic member 50, the The spacer 62 and the Palin ring 61 can respectively be disposed on the rod portion 33 and sequentially arranged from the connecting member 20 toward the reaming head portion 32. The elastic member 50 is, for example, a coil spring, and the elastic member The 50 series can be helically extended along the axial direction of the rod portion 33, and the spacer 62 can be an annular metal foil.

More specifically, the Palin ring 61 can abut against one side of the reaming head 32 facing the connecting member 20, and the spacer 62 is sandwiched between the Palin ring 61 and the elastic member 50. The second end of the elastic member 50 is in contact with one of the side walls of the connecting member 20, and further, the connecting member 20 can be recessed with a receiving hole 22, at least part of the elastic member 50. It is placed in the receiving hole 22. The elastic member 50 can provide a predetermined compression displacement, so that when the reaming head 32 and the tubular member 41 are expanded, the reaming head 32 can be offset toward the connecting member 20, and further, When the driving portion 31 rotates in the forward rotation direction and the amount of pressing force between the reaming head portion 32 and the tube member 41 is excessively large, the elastic member 50 can be compressed to face the reaming head portion 32 toward the connecting member 20 The offset protects the tube member 41 from being damaged by the excessive pushing of the reaming head 32.

It is worth mentioning that the Palin ring 61 can reduce the elastic member 50 and the reaming The friction between the heads 32 allows the reaming head 32 to smoothly rotate when used by the user, which improves the smoothness and efficiency of the work. In addition, the spacer 62 can cover and protect the Palin ring 61. In order to avoid the pressure and friction of the Palin ring 61 directly damaged by the external force, the quality of the product is maintained and the service life of the product is improved.

The outer tooth portion 21 can have an external thread 211 and a smoothing portion 212. A first direction can be defined from the reaming head 32 toward the connecting member 20, and the driving portion 31 rotates in the reverse direction (as shown in the figure). When the outer tooth portion 21 is moved in the first direction relative to the inner tooth portion 13 and the outer thread 211 is disengaged from the inner tooth portion 13, the smooth portion 212 is slidable with the inner tooth portion 13 The connection can be idling at the end of the reverse rotation, which can prevent the user from causing a sprain or the like.

In summary, the pipe expander of the present invention can protect the pipe member from being damaged by excessive pressure, and can reduce the friction of the work, and the user can smoothly rotate when used, thereby improving the smoothness and efficiency of the work; In addition, the quality of the product can be maintained and the service life of the product can be improved. In addition, idling can be generated at the end of the reverse rotation to avoid spraining of the user.

In summary, the overall structural design, practicality and efficiency of this creation are indeed in full compliance with the needs of industrial development, and the disclosed structural creation is also an unprecedented innovative structure, so it has a "novelty" should Undoubtedly, this creation can be more effective than the conventional structure. Therefore, it is also "progressive". It fully complies with the requirements of the application requirements for new patents in the Chinese Patent Law. It is a patent application in accordance with the law, and please The bureau will review it early and give it affirmation.

1‧‧‧ Expander

10‧‧‧ Ontology

20‧‧‧Connecting parts

30‧‧‧Drive shaft assembly

40‧‧‧Pinch assembly

Claims (6)

A pipe expander comprising: a body having a sleeve hole for inserting a pinch tube assembly, the body penetrating a connection hole communicating with the sleeve hole; and a connecting member movably inserting the connection a drive shaft assembly coupled to the connector for operation to drive movement of the connector, the drive shaft assembly having a reaming head movable toward the pinch tube assembly, the connector and the extension An elastic member and at least one Palin assembly are disposed between the head portions of the hole, and the elastic member has an elastic force for pushing the at least one Palin assembly to abut against at least one of the connecting member and the reaming head. The expander according to claim 1, wherein the reaming head is disposed inside the body and adjacently disposed at one end of the connecting member, and the reaming head is movable relative to the connecting member, the elastic member The reaming head can be moved normally in a direction away from the connector. The expander of claim 2, wherein the Palin assembly has a Palin ring and a spacer, the spacer being disposed between the Palin ring and the elastic member. The expander of claim 3, wherein the Palin ring abuts the side of the reaming head facing the connecting member, the spacer is firstly disposed on the Palin ring and the elastic member Between the ends, one of the second ends of the elastic member abuts against a side wall of the connecting member. The expander of claim 3 or 4, wherein the drive shaft assembly comprises a rod portion, the rod portion passes through the connecting member, the rod portion is connected to the reaming head portion, and the elastic member is a rod a coil spring, the elastic member is formed by spirally extending along an axial direction of the rod portion, and the elastic member, the spacer member and the Palin ring respectively sleeve the rod portion and sequentially from the connecting member toward the reaming head portion Arranged, the spacer is an annular metal foil, and the connecting member is recessed with a receiving hole, At least a portion of the elastic member is received in the receiving hole, and an outer tooth portion is disposed on the outer peripheral surface of the connecting member, and an inner tooth portion is disposed on the inner circumferential surface of the connecting hole, and the outer tooth portion is opposite to the inner tooth portion Screwing, one end of the rod portion is fixed with a rotatable driving portion, and the driving portion is detachably engaged with the connecting member, the reaming head portion includes a conical head, and the conical head is laterally The axial direction of the rod is inclined. The expander of claim 5, wherein the outer tooth has an external thread and a smooth section, and a first direction is defined from the reaming head toward the connecting member, wherein the outer tooth is opposite to the inner tooth When the portion moves in the first direction and the external thread is disengaged from the inner tooth portion, the smooth portion is slidably coupled to the inner tooth portion.