TWM539994U - Tube expanding device - Google Patents

Description

Pipe expansion device

The novel system is related to the expansion device, and particularly refers to a pipe expansion device for expanding the pipe.

According to many pipe fittings, expansion equipment such as construction engineering, hydropower piping engineering, and refrigerating air conditioning are required. In the conventional pipe expanding device, the pipe expanding member of the pipe expanding fixture is connected to the outside of the body of the sleeve, and the pipe expanding member is driven by the pushing member of the hydraulic device, thereby expanding the pipe fitting to the pipe clamp.

The current pipe expansion device can refer to the new patent No. M490365 of the Republic of China, which discloses a pipe expansion device which is provided with a sleeve, a pipe expansion group and a hydraulic device. The sleeve has a body, and the side of the body is provided with a connection end. And having a receiving space in the body, and two sides of the body are respectively provided with elongated slots, and the hydraulic device has a hydraulic cylinder, the hydraulic cylinder is connected to the connecting end of the sleeve, and the hydraulic cylinder is provided with a handle and The pushing member and the pushing member are located in the connecting end, and the expanding pipe set is provided with the expanding pipe member and the limiting column, the expanding pipe member is located in the receiving space of the body, and the connecting pipe is provided on the two sides of the pipe expanding member, and the limiting column 2 The side is formed with a connecting portion and a pushing portion, and the connecting portion is connected to the connecting hole of the pipe expanding member, and the pushing portion is exposed by the elongated groove of the body.

Wherein, the expansion pipe is deformed by the extruded pipe member, so that the pipe expansion member is not returned to the original position without external force, and the user must push the expansion pipe to the original position by pushing the pushing portion of the limiting column. In order to allow the user to perform the pipe expansion operation again, the defect that the pipe expansion piece cannot be automatically reset and the operation is inconvenient is highlighted.

Secondly, the expansion tube set is provided with a pipe expansion member and an elastic member, and the expansion pipe member is placed in the accommodating space of the body, and the elastic member is disposed in the accommodating space at the end portion of the body at the expansion pipe; when in use, The screwing portion of the hydraulic device is screwed to the bushing, so that the pushing member of the hydraulic device is located in the receiving space of the body, and the user is allowed to press the handle of the hydraulic device to displace the pushing member toward the expansion tube. At the same time, the expansion pipe is pushed, and the elastic member is in a compressed state. When the pushing member of the hydraulic device returns to the original position, the elastic member can be elastically reset to return the expansion pipe to the original position.

However, since the elastic member is directly operated with the pipe expanding member (or the expansion pipe jig), when the pipe is expanded by different pipe diameters, the elastic member is easily detached and must be reassembled, which is troublesome.

Therefore, how to solve the above-mentioned lack of the prior art is the primary research and development topic of the new model.

The main purpose of the present invention is to provide a pipe expansion device which can be easily assembled and disassembled, and the elastic member is disposed in the clamping group in a built-in manner, and is not directly in contact with the expansion tube. In addition to the function of automatically resetting the expansion tube group, the operation of the expansion tube group is not bent or dropped by the interference when the expansion tube is moved.

In order to achieve the foregoing object, the present invention is a pipe expansion device comprising: a clamping group having a pipe expansion end, a connecting end opposite to the pipe expanding end, and a through end of the pipe expanding end The accommodating space of the connecting end portion; a expanding tube group is displaceably disposed in the accommodating space of the clamping group; a connecting member is disposed at the connecting end portion of the clamping group; and an elastic component is disposed at the clip The accommodating space of the holding group is located between the expanding pipe group and the connecting member, and can drive the pipe expanding group to be displaced toward the pipe expanding end portion and then reset toward the connecting end portion.

Preferably, the clamping set is detachably clamping a expansion tube.

Preferably, the expansion tube assembly includes a fixing member, a expansion tube member, and an actuating rod; the fixing member is fixed in the accommodating space of the clamping group; the expanding tube member is displaceably disposed in the accommodating space And between the expansion end and the fixing member; the actuating rod has a first rod portion connecting the expansion tube and a second rod portion between the connecting end portion and the fixing member; the elasticity Two ends of the element are respectively abutted between the fixing member and the second rod portion.

Preferably, wherein the elastic element is a compression spring.

Preferably, the actuating lever further has a shaft portion between the first rod portion and the second rod portion, and the elastic member is sleeved on the shaft portion.

Preferably, two ends of the elastic element are respectively connected to the expansion tube group and the connecting member.

Preferably, wherein the elastic element is a tension spring.

Preferably, the number of the elastic members is two.

Preferably, the expansion tube assembly includes a pipe expansion member and an actuating rod; the expansion tube member is displacably disposed in the accommodating space, the actuating rod has a first shank portion connecting the expansion tube member, and a a second rod portion between the connecting end portion and the pipe expanding member; two ends of the elastic member are respectively connected to the pipe expanding member and the connecting member.

Preferably, one end of the connecting member has an inner sliding slot, and the connecting member is connected to a driving group. One end of the driving group has an outer convex portion, and the outer convex portion can be embedded in the inner sliding slot and rotated. An angle is achieved to be detachably connected.

In order to enable your review committee to have a better understanding and understanding of the purpose, characteristics and efficacy of this new model, please refer to the following brief description for details. Before the detailed description is made, it is noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 1 to FIG. 4 , a first embodiment of the present invention provides a pipe expanding device, which is mainly composed of a clamping group 10 , a pipe expanding assembly 20 , a connecting member 30 , and an elastic member 40 . Composition, where:

The clamping group 10 has a tube extending end portion 11, a connecting end portion 12 opposite to the expanding tube end portion 11, and an accommodating space 13 extending through the expanding tube end portion 11 and the connecting end portion 12; In this embodiment, the clamping group 10 detachably holds a expansion tube jig 91.

The expansion tube assembly 20 is movably disposed in the accommodating space 13 of the clamping group 10; in this embodiment, the expansion tube assembly 20 includes a fixing member 21, a expansion tube member 22, and an actuating rod 23;

The fixing member 21 is fixed in the accommodating space 13 of the clamping group 10 by screws 92;

The expansion tube 22 is slidably disposed between the expansion end portion 11 and the fixing member 21; in this embodiment, the expansion tube 22 has a conical shape, but not limited thereto, as long as The shape of the pipe expansion can be carried out, and the pipe expansion member 22 has a conical top surface 221 for expanding the pipe and an internal thread groove 222 opposite to the conical top surface 221;

The actuating lever 23 has a first rod portion 231 connecting the tube expanding member 22, a second rod portion 232 between the connecting end portion 12 and the fixing member 21, and a first rod portion 231 and a portion The shaft portion 233 between the two rod portions 232; in the embodiment, the first rod portion 231 of the actuating rod 23 is connected to the internal thread groove 222 of the expansion tube 22 in a threaded manner, but For this reason, the actuating rod 23 can also be integrated with the tube expanding member 22. Of course, the first rod portion 231, the second rod portion 232 and the shaft portion 233 can also be arranged in a thread. The central portion of the second rod portion 232 is hollow so as to be inserted into a driving head 81 of the driving group 80 such as the hydraulic cylinder. In this embodiment, the driving is performed. The head 81 has a conical shape, but is not limited thereto, and may be any shape that can push the second rod portion 232 in a rectangular shape or the like.

The connecting member 30 is disposed at the connecting end portion 12 of the clamping group 10; in the embodiment, the connecting member 30 is locked to the connecting end portion 12 of the clamping group 10 by a plurality of screws 93, and the connecting member One end of the 30 has an inner sliding slot 31. The connecting member 30 is connected to the driving group 80. One end of the driving group 80 has an outer convex portion 82, and the outer convex portion 82 can be embedded in the inner sliding slot 31 and rotated. The detachable connection is achieved at an angle, that is, the connection of the quick release structure.

The elastic member 40 is disposed in the accommodating space 13 of the clamping group 10 and located between the expanding tube group 20 and the connecting member 30, and can drive the expanding tube group 20 to be displaced toward the expanding end portion 11 In the embodiment, the elastic member 40 is a compression spring, and the elastic member 40 is sleeved on the shaft portion 233, and the two ends of the elastic member 40 are respectively abutted. The fixing member 21 is interposed between the fixing member 21 and the second rod portion 232 of the actuating lever 23.

The above description is the configuration description of each main component of the first embodiment of the creation. The mode of operation of this creation and its effects are described below.

As shown in FIG. 4 and FIG. 5, when the driving head 81 of the driving group 80 drives the operating rod 23 to be displaced in the direction of the expanded end portion 11 of the clamping group 10, the expansion tube 22 is synchronized to the clamping group 10. The expansion end portion 11 is displaced in the direction of the tube expansion operation. At this time, since the fixing member 21 is fixed in the accommodating space 13 of the clamping group 10, the elastic member 40 is disposed in a built-in manner. In the accommodating space 13 of the clamping group 10, the two ends of the elastic member 40 are respectively abutted between the fixing member 21 and the second rod portion 232 of the actuating lever 23, so that the elastic member 40 Accumulating an elastic restoring force, when the driving group 81 of the driving group 80 is restored to the original position, the elastic member 40 releases the accumulated elastic restoring force, and the expansion tube 22 and the actuating rod 23 are moved to the clamping group 10. The connecting end portion 12 is displaced in the direction to achieve the function of automatic reset.

Accordingly, the present invention can be easily assembled and disassembled, and the elastic member 40 is disposed in the clamping group 10 in a built-in manner, and is not directly in contact with the expansion tube 91. Therefore, in addition to allowing the expansion In addition to the automatic reset function of the tube set 20, the operation of the tube expansion unit 20 is not bent or dropped by the interference when the tube expansion device 91 moves.

Referring to FIG. 6 , a second embodiment of the present invention provides a pipe expanding device, which is also composed of a clamping group 10 , a pipe expanding assembly 20 , a connecting member 30 , and an elastic member 40 . The manner and function of the actuation are the same as those of the first embodiment, and therefore will not be described again. The second embodiment is different in that:

The number of the elastic members 40 is two, and each of the elastic members 40 is a compression spring. The two ends of the elastic member 40 are respectively abutted between the fixing member 21 and the second rod portion 232 of the actuating lever 23. In this embodiment, each of the elastic members 40 is not sleeved on the actuating lever 23. Of course, the number of the elastic members 40 is not limited thereto, and may be three, four, or the like.

Referring to FIG. 7 and FIG. 8 , a third embodiment of the present invention provides a pipe expanding device, which is also composed of a clamping group 10 , a pipe expanding assembly 20 , a connecting member 30 , and an elastic member 50 . The configuration, the operation mode and the function are the same as those in the first embodiment, and therefore will not be described again. The third embodiment is different in that:

The expansion tube assembly 20 includes a tube expansion member 22 and an actuation rod 23; the expansion tube member 22 is displacably disposed in the accommodating space 13 of the clamping group 10, and the actuation rod 23 has a first connection to the expansion tube member 22. a rod portion 231, and a second rod portion 232 between the connecting end portion 12 and the expansion tube member 22;

The number of the elastic members 50 is two, and each of the elastic members 50 is a tension spring, and each of the elastic members 50 is disposed in the accommodating space 13 of the clamping group 10, and both ends of the elastic members 50 are The expansion member 22 and the connecting member 30 are respectively connected by hooking, embedding or other means; of course, the elastic member 50 can also be a single one as shown in FIG. 9, but not limited thereto, or three Number, four, etc.

Accordingly, when the driving head 81 of the driving group 80 drives the actuating lever 23 to be displaced toward the expanded end portion 11 of the clamping group 10, the expansion tube 22 is synchronized to the expanded end portion 11 of the clamping group 10. The directional displacement is performed to perform the pipe expansion operation. In this case, each of the elastic members 50 is a tension spring, and each of the elastic members 50 is disposed in the accommodating space 13 of the clamping group 10 in a built-in manner. The two ends of the elastic member 50 are respectively connected between the expansion tube 22 and the connecting member 30. Therefore, the elastic member 50 accumulates an elastic restoring force when the driving head 81 of the driving group 80 returns to the original position. The elastic member 50 releases the accumulated elastic restoring force, and the expansion tube 22 and the actuating lever 23 are displaced in the direction of the connecting end portion 12 of the clamping group 10 to achieve an automatic reset function.

Accordingly, in the third embodiment of the present invention, each of the elastic members 50 is also disposed in the clamping group 10 in a built-in manner, and is not directly in contact with the expansion tube 91. Therefore, in addition to the In addition to the function of the automatic resetting of the pipe expanding group 20, the operation of the pipe expanding group 20 is not bent or dropped by the disturbance when the pipe expanding jig 91 moves.

In conclusion, the above embodiments and drawings are only preferred embodiments of the present invention, and the scope of the novel implementation cannot be limited thereto, that is, the equal changes and modifications made by the scope of the novel application are all It should be within the scope of this new patent.

10‧‧‧Clamping group
11‧‧‧Expanded end
12‧‧‧Connected end
13‧‧‧ accommodating space
20‧‧‧Expansion group
21‧‧‧Fixed parts
22‧‧‧Expanded pipe fittings
221‧‧‧Conical top
222‧‧‧Threaded groove
23‧‧‧Action rod
231‧‧‧ first pole
232‧‧‧Second pole
233‧‧‧ shaft body
30‧‧‧Connecting parts
31‧‧‧Internal chute
40, 50‧‧‧Flexible components
80‧‧‧Drive Group
81‧‧‧ drive head
82‧‧‧Outer convex
91‧‧‧Expanding fixture
92, 93‧‧‧ screws

Figure 1 is a perspective view of a first embodiment of the present creation. 2 is an exploded perspective view of the first embodiment of the present invention, showing a partial exploded state of the present creation and expansion fixture and the drive group. Figure 3 is a partial cross-sectional view showing the first embodiment of the present creation. Figure 4 is a partial cross-sectional view showing another perspective of the first embodiment of the present creation. Fig. 5 is a cross-sectional view showing the operation of the first embodiment of the present invention, showing a state in which the expansion tube group is displaced toward the expanded end portion of the clamp group. Figure 6 is a partial cross-sectional view showing a second embodiment of the present creation. Figure 7 is a partial cross-sectional view showing a third embodiment of the present creation. Fig. 8 is a cross-sectional view showing the operation of the third embodiment of the present invention, showing a state in which the expansion pipe group is displaced toward the expanded end portion of the clamp group. Figure 9 is a partial cross-sectional view showing a third embodiment of the present invention, showing a state in which the elastic members are one.

10‧‧‧Clamping group

11‧‧‧Expanded end

12‧‧‧Connected end

13‧‧‧ accommodating space

20‧‧‧Expansion group

21‧‧‧Fixed parts

22‧‧‧Expanded pipe fittings

221‧‧‧Conical top

222‧‧‧Threaded groove

23‧‧‧Action rod

231‧‧‧ first pole

232‧‧‧Second pole

233‧‧‧ shaft body

30‧‧‧Connecting parts

31‧‧‧Internal chute

40‧‧‧Flexible components

80‧‧‧Drive Group

81‧‧‧ drive head

82‧‧‧Outer convex

91‧‧‧Expanding fixture

92, 93‧‧‧ screws

Claims (10)

The pipe expanding device comprises: a clamping group having a pipe expansion end, a connecting end opposite to the pipe expanding end, and an receiving space extending through the expanding pipe end and the connecting end; a expansion tube group is displaceably disposed in the accommodating space of the clamping group; a connecting member is disposed at the connecting end portion of the clamping group; an elastic member is disposed in the accommodating space of the clamping group, And located between the expansion tube group and the connecting member, the expansion tube group can be displaced toward the end of the expansion tube and then reset toward the connection end portion. The pipe expanding device of claim 1, wherein the clamping group is detachably holding a pipe expanding jig. The expansion device of claim 1, wherein the expansion tube assembly comprises a fixing member, a expansion tube member, and an actuating rod; the fixing member is fixed in the accommodating space of the clamping group; the expanding tube member is displaceable Positioning in the accommodating space between the end portion of the expansion tube and the fixing member; the actuating rod has a first rod portion connecting the expansion tube and a position between the connecting end portion and the fixing member a second rod portion; two ends of the elastic member are respectively abutted between the fixing member and the second rod portion. The pipe expanding device of claim 3, wherein the elastic member is a compression spring. The expansion device of claim 3, wherein the actuating lever further has a shaft portion between the first rod portion and the second rod portion, and the elastic member is sleeved on the shaft portion. The pipe expanding device of claim 1, wherein both ends of the elastic member are respectively connected to the pipe expanding group and the connecting member. The pipe expanding device of claim 6, wherein the elastic member is a tension spring. The pipe expanding device of claim 6, wherein the number of the elastic members is two. The pipe expansion device of claim 1, wherein the pipe expansion unit comprises a pipe expansion member and an actuating rod; the expansion pipe member is movably disposed in the accommodating space, and the actuating rod has a first connection connecting the pipe expansion member a rod portion and a second rod portion between the connecting end portion and the pipe expanding member; two ends of the elastic member are respectively connected to the pipe expanding member and the connecting member. The expansion device of claim 1, wherein one end of the connecting member has an inner sliding slot, the connecting member is connected to a driving group, and one end of the driving group has an outer convex portion, and the outer convex portion is The inner chute is embedded and rotated by an angle to be detachably connected.