TWM502125U - Telescoping tubes and fixing mechanism thereof - Google Patents

Description

Telescopic tube and its fixing mechanism

The present invention relates to a telescopic tube, which mainly provides a telescopic tube which is better in fixation and can avoid the instantaneous looseness of the tube member, and a fixing mechanism associated therewith.

According to the telescopic tube, it is often used in daily life, such as crutches, camera tripods, fitness equipment, drying racks and even self-timer sticks, etc., all of which use telescopic tubes to change the overall length to meet different usage requirements. The conventional telescopic tube mainly connects or couples several pipe members one by one to change the length of the whole joint. The method is to achieve stable and detachable storage by interlocking between the components.

In addition, a multi-section sleeve structure has an eccentric locking mechanism at one end of the built-in tube to achieve a lengthless variation with the outer sleeve. However, when the above-mentioned telescopic tube changes the length of the shaft, the rod members must be disassembled or assembled one by one, or the sleeve is stretched and screwed and fixed, which is obviously inconvenient in operation and structurally unstable.

Therefore, there is a fixing mechanism that can remove the fixing function between the pipe members by rotating the pipe member, so as to quickly adjust the expansion and contraction state of the pipe member; similarly, the conventional fixing mechanism basically has a ring set at the mutually connected pipe members. And a conical screw, the inner ring of the collar is provided with a corresponding screwing connection with the conical screw Conical screw holes.

When the two tubular members are rotated in the locking direction, the collar can be displaced toward the larger end of the tapered screw rod by the screw of the tapered screw and the tapered screw hole, thereby making the collar outward. The expansion and the inner wall of the pipe member provided with it form a pressing action, and the fixing effect of limiting the relative rotation of the two pipe members and the relative axial displacement is achieved.

Conversely, when the two tubes are rotated in the loosening direction, the collar is displaced toward the smaller end of the tapered screw rod by the screw of the conical screw and the conical screw hole, thereby making the collar It is retracted to relieve its tight action with the inner wall of the pipe, and the two pipes are displaced relative to each other to change the overall length.

However, the fixing mechanism similar to that used for the telescopic tube lacks a relatively reliable joint design. In actual use, it is often caused by rotating the two tubes in the loosening direction until the collar and the taper screw are completely disengaged. If any frictional interference is lost between the two pipe fittings, and the objects installed or supported by the pipe fittings fall and fall in an instant, and the two pipe fittings need to be locked again, the taper screws and the taper tapped holes will be used. Can not be true, and thus cause a lot of inconvenience in use.

In view of this, the present invention provides a telescopic tube which is better in fixation and can avoid the instantaneous looseness of the tube member, and a fixing mechanism associated therewith.

In order to achieve the above object, the telescopic tube disclosed in the present invention basically comprises: a first tube member; a second tube member relatively inserted into the first tube member; and a backing ring for being sleeved in the first tube member And maintaining a normal contact with the inner wall of the first pipe member, the inner ring of the bushing is provided with a conical screw hole, and the outer periphery of the bushing is provided with a ring extending along the axial direction thereof to the both ends thereof and extending through the inner ring thereof. a connecting member fixed to the second tubular member and extending into one end of the first tubular member, the connecting member is provided with a conical screw for screwing with the tapered screw hole of the backing ring, Conical screw tail end A first stop having an outer diameter greater than a minimum inner diameter of the collar.

With the above structural features, the telescopic tube of the present invention can be prevented from being detached from the backing ring due to the excessive rotation of the first and second tubular members in the loosening direction under the restriction of the first blocking portion during the actual use. The second pipe member maintains the frictional contact state with the first pipe member through the backing ring, avoiding the momentary loose sliding of the first pipe member and the second pipe member, causing the object to be installed or supported to fall and be damaged instantaneously, and the cone screw and the conical screw The holes of the holes are indeed aligned, and the telescopic tube can be quickly fixed to the adjusted length.

According to the above structural feature, the collar is provided with a groove extending along the axial direction thereof to the both ends of the other side of the slit.

According to the above structural feature, the connecting member is provided with a socket portion for inserting the second tubular member at one end of the joint with the second tubular member, and a socket is provided between the sleeve portion and the tapered screw. a second stop that abuts the nozzle of the second tubular member.

According to the above structural feature, the collar is provided with a groove extending along its axial direction to the both ends of the other side of the slot; and the connecting member is attached to the second tube One end of the joint is provided with a sleeve portion for inserting the second tube member, and a second blocking portion for abutting the nozzle of the second tube member is disposed between the sleeve portion and the conical screw.

The second tubular member is attached to the joint of the sleeve portion and the sleeve portion to form at least one stamping portion embedded in the socket portion.

The tapered screw and the screw thread of the tapered screw hole are corresponding square screw teeth.

The tapered screw and the screw thread of the tapered screw hole are corresponding trapezoidal threads.

The tapered screw and the screw thread of the tapered screw hole are corresponding circular screws.

The present invention further discloses a telescopic tube fixing mechanism, which basically comprises: a backing ring having a predetermined outer diameter, the inner ring is provided with a conical screw hole, and the outer circumference is provided with a follower a slot extending axially to both ends thereof and extending through the inner ring; a connecting member having a sleeve having a predetermined outer diameter, and a taper for the collar at one end of the sleeve The hole-phase screwed conical screw is provided at the end of the conical screw with a first stop having an outer diameter larger than a minimum inner diameter of the collar.

According to the above structural feature, the collar is provided with a groove extending along the axial direction thereof to the both ends of the other side of the slit.

According to the above structural feature, the connecting member is provided with a second blocking portion between the sleeve portion and the conical screw.

According to the above structural feature, the collar is provided with a groove extending along its axial direction to the both ends of the other side of the slot; and the connecting member is attached to the socket and the sleeve A second stop is protruded between the tapered screws.

The tapered screw and the screw thread of the tapered screw hole are corresponding square screw teeth.

The tapered screw and the screw thread of the tapered screw hole are corresponding trapezoidal threads.

The tapered screw and the screw thread of the tapered screw hole are corresponding circular screws.

Specifically, the connector and the ring structure in the present design are designed to prevent the connector from being detached from the liner due to excessive rotation of the tube in the loosening direction, thereby ensuring that the second tube is permeable. The backing ring maintains the frictional contact state with the first pipe member, avoiding the momentary loose sliding of the first pipe member and the second pipe member, and causing the object installed or supported by the pipe member to fall and be damaged instantaneously, and the cone screw and the cone screw can be further The thread of the hole is really right, it is convenient to quickly fix the telescopic tube quickly after adjustment. The length of the liner; and the groove design of the liner ring can be used to increase the angle at which the slit of the liner ring can be opened during assembly, facilitating the installation of the liner and the connecting member.

10‧‧‧First pipe fittings

20‧‧‧Second pipe fittings

21‧‧ ‧ Stamping Department

30‧‧‧ Backing ring

31‧‧‧Conical screw holes

32‧‧‧ slotting

33‧‧‧ Groove

40‧‧‧Connecting parts

41‧‧‧Conical screw

42‧‧‧First stop

43‧‧‧ Sockets

44‧‧‧second stop

The first figure is an exploded view of the telescopic tube structure of the present creation.

Fig. 2 is a cross-sectional view showing the structure of the relevant member in the first embodiment of the creation.

Fig. 3 is a schematic view showing the state in which the slit of the liner is opened.

Figure 4 is a cross-sectional view showing the structure of the telescopic tube of the first embodiment of the present invention.

Figure 5 is a cross-sectional view showing the structure of the relevant member in the second embodiment of the present invention.

Figure 6 is a cross-sectional view showing the structure of the relevant member in the third embodiment of the present invention.

The present invention mainly provides a telescopic tube which is better in fixation and can avoid the looseness and slippage of the tube piece, and a fixing mechanism associated therewith. As shown in Fig. 1 and Fig. 2, the telescopic tube disclosed in the present invention is basically The first tube member 10, a second tube member 20, a backing ring 30, and a connecting member 40 are included; wherein: the second tube member 20 is relatively sleeved into the first tube member 10, and is compatible with the first The tube member 10 is relatively rotated and axially displaced; in practice, the first tube member 10 and the second tube member 20 can be made of plastic, aluminum alloy, iron or stainless steel.

The lining ring 30 is sleeved in the first pipe member 10, and is normally in contact with the inner wall of the first pipe member 10. The inner ring of the lining ring 30 is provided with a conical screw hole 31. The periphery is provided with a slot 32 extending along its axial direction to its ends and extending through its inner ring; in practice, the collar 30 is cut or molded from plastic The type is preferred so that it fits when it is installed and will be opened at the slot 32 (as shown in Figure 3).

The connecting member 40 is fixed to one end of the second tubular member 20 and extends into the first tubular member 10. The connecting member 40 is provided with a conical screw for screwing with the tapered screw hole 31 of the backing ring 30. 41. A first stop portion 42 having an outer diameter greater than a minimum inner diameter of the backing ring 30 is disposed at a rear end of the tapered screw 41.

In the implementation, the above-mentioned lining ring 30 and the connecting member 40 can be assembled with the first pipe member 10 and the second pipe member 20 to form a transmissive rotation manner to release between the first and second pipe members 10 and 20. The fixed action enables the telescopic tube product or modular kit for quickly adjusting the first and second tubular members 10 and 20 to be widely used in daily life such as crutches, camera tripods, fitness equipment, drying racks and even self-timer Bar and other equipment.

In the actual use, the telescopic tube of the present invention can be rotated in the locking direction by the first and second tube members 10, 20 as shown in FIG. 4, and the tapered screw 41 and the ring 30 of the connecting member 40. The screw thread of the conical screw hole 31 is driven to displace the ring 30 toward one end of the larger diameter of the conical screw 41, thereby expanding the ring 30 outwardly and forming the inner wall of the first pipe member 10 disposed therewith. The pressing effect reaches a fixed effect of limiting the relative rotation of the first and second tubular members 10, 20 and the relative axial displacement.

On the contrary, when the first and second pipe members 10 and 20 are rotated in the loosening direction, the collar ring 30 is oriented by the screw of the conical screw 41 of the connecting member 40 and the taper screw hole 31 of the ring 30. The taper screw 41 is displaced at one end of the smaller rod diameter, so that the ring 30 is retracted to release the pressing force with the inner wall of the first pipe member 10, so that the first and second pipe members 10, 20 are relatively axially displaced. In turn, the length of the entire telescopic tube is changed.

In particular, under the restriction of the first stop portion 42, the first and second tubular members 10, 20 are prevented from being excessively rotated in the loosening direction, thereby causing the connecting member 40 to be disengaged from the backing ring 30, ensuring that the second tubular member 20 passes through the backing ring. 30 maintains the frictional contact state with the first pipe member 10, and prevents the first and second pipe members 10 and 20 from loosening and sliding instantaneously. The mounted or supported object instantly falls and is damaged, and the taper of the tapered screw 41 and the tapered screw hole 31 is surely matched, and the telescopic tube can be quickly fixed to the adjusted length.

Furthermore, the backing ring 30 is provided with a groove 33 extending along its axial direction to the opposite ends of the other side of the slit 32, and can be designed by the groove 33 of the backing ring 30 for assembly. When the slot 32 of the ring 30 is increased, the angle of the slot 32 can be increased to facilitate the installation of the ring 30 and the connector 40.

The connecting member 40 is provided at one end of the joint with the second tubular member 20, and a sleeve portion 43 for inserting into the second tubular member 20 is disposed between the sleeve portion 43 and the tapered screw 41. A second blocking portion 44 is provided for abutting the nozzle of the second tubular member 20, and the positioning effect of the connecting member 40 is increased by the design of the second blocking portion 44.

Of course, the integral telescopic tube is provided with a groove 33 extending along the axial direction of the backing ring 30 with respect to the other side of the slit 32; and the connecting member 40 is tied to One end of the second tube member 20 is provided with a sleeve portion 43 for inserting the second tube member 20, and between the sleeve portion 43 and the conical screw member 41, a second tube member 20 is provided. The structural shape of the second blocking portion 44 that is connected to the nozzle is preferred; even the second tubular member 20 can be further formed at least at the junction with the socket portion 43 to form at least one embedded in the socket. The stamping portion 21 of the portion 43 increases the fixing effect between the connecting member 40 and the second tubular member 20.

In the structure of the present invention, the tapered screw 41 and the screw thread of the tapered screw hole 31 can be corresponding square teeth as shown in FIG. 2 . Or the corresponding trapezoidal thread as shown in Figure 5, or the corresponding circular thread as shown in Figure 6.

Of course, the lining ring 30 and the connecting member 40 disclosed in the present invention can also be sold by a user or a downstream manufacturer to install a telescopic tube fixing mechanism for the pipe fittings. The telescopic tube fixing mechanism basically includes: Lining ring 30 and one a joint 40; wherein: the backing ring 30 has an outer diameter of a preset size, and the inner ring is provided with a conical screw hole 31, and a peripheral portion thereof is provided with a side extending along the axial direction thereof to the both ends thereof and extending through the inner ring thereof. The groove 32 is similarly formed by cutting or molding the plastic.

The connecting member 40 has a sleeve portion 43 having a predetermined outer diameter, and a tapered screw 41 for screwing with the tapered screw hole 31 of the backing ring 30 is disposed at one end of the sleeve portion 43. The tail end of the tapered screw 41 is provided with a first stop portion 42 having an outer diameter larger than the minimum inner diameter of the collar ring 30.

As shown in FIG. 1, the backing ring 30 can further be provided with a groove 33 extending along its axial direction to the both ends of the other side of the slit 32; and the connection A second blocking portion 44 may be further protruded between the sleeve portion 43 and the tapered screw 41.

Similarly, the telescopic tube fixing mechanism is provided with a groove 33 extending along the axial direction of the backing ring 30 with respect to the other side of the slit 32, and the connecting member 40 A second blocking portion 44 is protruded between the sleeve portion 43 and the tapered screw 41; of course, the screw thread of the tapered screw 41 and the tapered screw hole 31 is a corresponding square thread. Or the corresponding trapezoidal thread, or the corresponding circular thread.

Compared with the conventional technology, the connector and the ring structure design in the present invention can prevent the connecting member from being separated from the ring by the excessive rotation of the pipe in the loosening direction, except for the restriction of the first stop. The second pipe member maintains the frictional contact state with the first pipe member through the backing ring, thereby avoiding the momentary loose sliding of the first pipe member and the second pipe member, thereby causing the object installed or supported by the pipe member to fall and be damaged instantaneously, and the cone screw and the cone screw and The taper of the taper screw hole is really right, so that the telescopic tube can be quickly fixed to the adjusted length quickly; and the groove design of the backing ring can be used. Increasing the angle at which the slit of the liner ring can be opened to facilitate the installation of the gasket and the connecting member.

10‧‧‧First pipe fittings

20‧‧‧Second pipe fittings

30‧‧‧ Backing ring

31‧‧‧Conical screw holes

40‧‧‧Connecting parts

41‧‧‧Conical screw

42‧‧‧First stop

43‧‧‧ Sockets

44‧‧‧second stop

Claims (15)

A telescopic tube includes: a first tube member; a second tube member that is inserted into the first tube member; a backing ring is sleeved in the first tube member, and is normally maintained with the inner wall of the first tube member Contacting, the inner ring of the backing ring is provided with a conical screw hole, and a periphery of the backing ring is provided with a slot extending along the axial direction thereof to the two ends thereof and extending through the inner ring; a connecting member is fixed on the a second tubular member extends oppositely to one end of the first tubular member, the connecting member is provided with a conical screw for screwing with the tapered screw hole of the backing ring, and an outer diameter is larger than the outer end of the tapered screw The first stop of the minimum inner diameter of the liner. A telescopic tube according to claim 1, wherein the collar is provided with a groove extending along its axial direction to the both ends of the other side of the slit. The telescopic tube of claim 1, wherein the connecting member is provided with a sleeve portion for inserting the second tube member at one end of the joint with the second tube member, the sleeve portion and the conical screw rod There is a second stop for contacting the nozzle of the second pipe. The telescopic tube according to claim 1, wherein the backing ring is provided with a groove extending along the axial direction thereof to the outer periphery of the other side of the slit; and the connecting member is attached to One end of the second tubular member is provided with a socket for inserting the second tubular member, and between the sleeve portion and the tapered screw, a nozzle is provided for contacting the nozzle of the second tubular member. Second stop. The telescopic tube of claim 1 or 2, wherein the second tube member is attached to the joint portion of the second tube member and the sleeve portion, and is formed to form at least one stamping portion embedded in the socket portion. The telescopic tube according to any one of claims 1 to 4, wherein the tapered screw and the screw thread of the tapered screw hole are corresponding square screw teeth. The telescopic tube according to any one of claims 1 to 4, wherein the conical screw And the screw thread of the tapered screw hole is a corresponding trapezoidal thread. The telescopic tube according to any one of claims 1 to 4, wherein the tapered screw and the threaded thread of the tapered screw hole are corresponding circular screws. A telescopic tube fixing mechanism comprises: a lining ring having a pre-set outer diameter, wherein the inner ring is provided with a conical screw hole, and a periphery thereof is provided along a direction extending to the both ends thereof and extending therethrough a grooving groove; a connecting member having a sleeve having a predetermined outer diameter, and a tapered screw for screwing with the tapered screw hole of the collar at one end of the sleeve portion The end of the screw is provided with a first stop having an outer diameter larger than the minimum inner diameter of the collar. The telescopic tube fixing mechanism according to claim 9, wherein the collar is provided with a groove extending along the axial direction thereof to the both ends of the other side of the slit. The telescopic tube fixing mechanism of claim 9, wherein the connecting member is provided with a second blocking portion between the socket portion and the conical screw. The telescopic tube fixing mechanism according to claim 9, wherein the backing ring is provided with a groove extending along the axial direction thereof to the both ends of the other side of the slit; and the connecting member A second blocking portion is protruded between the socket portion and the tapered screw. The telescopic tube fixing mechanism according to any one of claims 9 to 12, wherein the tapered screw and the threaded thread of the tapered screw hole are corresponding square screw teeth. The telescopic tube fixing mechanism according to any one of claims 9 to 12, wherein the tapered screw and the threaded thread of the tapered screw hole are corresponding trapezoidal threads. The telescopic tube fixing mechanism according to any one of claims 9 to 12, wherein the tapered screw and the threaded thread of the tapered screw hole are corresponding circular screw teeth.