CN218040637U - Flexible protective pipe joint - Google Patents

Abstract

A flexible protection pipe joint is suitable for being inserted into a protection pipe along an axis and comprises a body, a nut member screwed on the body, a friction ring arranged between the body and the nut member, and a limiting member arranged inside the friction ring, wherein the body comprises a first inner end surface and an insertion space, the nut member comprises a second inner end surface, the friction ring comprises a first side end surface abutting against the first inner end surface, a second side end surface abutting against the second inner end surface, a bearing hole and a through hole, the limiting member is arranged in the bearing hole of the friction ring and comprises an outer ring wall and an inner ring wall, the cross section of the outer ring wall and the cross section of the inner ring wall perpendicular to the axis are C-shaped, the limiting member is provided with at least one clamping part capable of being embedded and clamped in a concave ring part of the protection pipe, and a gap is reserved between the limiting member and the second inner end surface. Therefore, the limiting part cannot be driven by the nut piece to rotate, and the protective tube cannot be cut and damaged.

Description

Flexible protective pipe joint

Technical Field

The present invention relates to a protective pipe joint, and more particularly to a flexible protective pipe joint.

Background

A conventional wave tube fast waterproof joint disclosed in taiwan certificate No. M296536 includes a hollow tubular joint body, a waterproof fixing member set, and a fastening member. The joint body comprises a second joint part with external threads and a convex abutting edge protruding from the middle section of the interior. The waterproof fixing piece set comprises a soft waterproof seat and a ring buckle ring, the soft waterproof seat is hollow and is provided with a second joint part inserted into the joint body and a lip edge leaning against the convex abutting edge, and a concave bearing part opposite to the lip edge and leaning against the end surface of the second joint part, the ring buckle ring is inserted into the concave bearing part of the soft waterproof seat and is provided with a plurality of elastic buckle pieces arranged on the inner ring and a plurality of clamping edges arranged on the free ends of the elastic buckle pieces. The packing piece is provided with a sleeve opening for a wave pipe to penetrate through, an internal thread section locked on the second joint part of the joint body, and a pushing surface which is positioned on the inner edge of the sleeve opening and pushes against the ring buckle ring.

When the quick waterproof connector is used, one end part of the wave pipe is inserted into the socket of the packing piece, inserted into the waterproof fixing piece group and clamped with the clamping edge of the ring clamping ring to be fixed on the quick waterproof connector of the wave pipe, so that the wave pipe can be connected to a fixed object by means of the quick waterproof connector of the wave pipe.

However, the wave tube is mainly used for the electric wire of the machine platform to penetrate through so as to protect the electric wire, and the electric wire can move along with the movement of the machine platform, at this time, because the end part of the wave tube is firmly and tightly pressed on the quick waterproof joint of the wave tube, the electric wire and the wave tube are limited and can not freely rotate along with the movement of the machine platform, especially, the mechanical arms above three axes are very common nowadays, four-axis and five-axis mechanical arms are widely applied in the manufacturing industry, and the mechanical arms teach flexibility and accuracy of movement, but the electric wire of the mechanical arm is limited by the quick waterproof joint of the wave tube, so that the mechanical arm is pulled in the operation process to influence the accuracy of the movement.

In addition, if this wavy pipe receives great revolving force and when rotating for this latch ring, also can cause this wavy pipe to receive this latch ring the card edge cuts and decreases for this wavy pipe is by this joint drops, makes inside electric wire expose, cuts this wavy pipe even when, also cuts inside electric wire.

Disclosure of Invention

An object of the utility model is to provide a flexible protection coupling that can solve current disappearance.

The utility model discloses a flexible protection tube joint who moves is applicable to and supplies the protection tube to insert along the axis and establishes, the protection tube has the several edge the concave ring portion that the axis range set up, the joint contains body, spiro union the nut piece of body, install in the body with friction ring between the nut piece, and install in the inside locating part of friction ring, the body includes first interior terminal surface, and by first interior terminal surface is concave establish and is followed the space is established in inserting that the axis set up, nut piece includes the orientation insert the second interior terminal surface in establishing the space, friction ring including support stop in the first side end surface of first interior terminal surface, edge the axis is opposite in first side end surface and support stop in the second side end surface of second interior terminal surface, by the concave bearing hole of establishing of second side end surface, and follow the axis set up in bearing hole one side and with the bearing hole insert the perforation of establishing the space intercommunication each other, locating part can install in friction ring's bearing hole, and include the perpendicular to the cross-section of axis be the C shape the cross-section connect in the outer ring wall of inserting and be in the locating part of card perpendicular ring portion also has clearance, the outer ring wall that the card is located the axis at least.

The utility model discloses a flexible protection tube joint that moves, the hold of friction ring by in first side end face with shoulder face between the second side end face, and connect in shoulder face with interior anchor ring between the second side end face defines jointly and forms, the second side end face with the degree of depth between the shoulder face is greater than the locating part corresponding to the height of axis.

The utility model discloses a protection coupling of flexible moving, the friction ring still include by first side end surface protrusion just follows the guide section that the axis extends, the guide section is stretched and is located insert and establish in the space.

The beneficial effects of the utility model reside in that: utilize the locating part install in the hold hole of friction ring, just there is the clearance between locating part and the second inner end face, when the operation nut piece rotates, the locating part can not receive nut piece drives and rotates, can ensure the protection tube can not cut the damage.

Drawings

Fig. 1 is an exploded perspective view of a flexible protective tube joint of the present invention;

fig. 2 is a combined sectional view of the embodiment.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

Referring to fig. 1 and 2, the embodiment of the flexible protection pipe joint of the present invention is suitable for a protection pipe 1 to be inserted along an axis L, the protection pipe 1 has an outer surface 101, and a plurality of concave ring portions 102 recessed from the outer surface 101 and arranged along the axis L. The joint comprises a body 10, a nut member 20 screwed to the body 10, a friction ring 30 installed between the body 10 and the nut member 20, and a limiting member 40 installed inside the friction ring 30.

The body 10 includes a first inner end surface 11 perpendicular to the axis L, an inserting space 12 recessed from the first inner end surface 11 and disposed along the axis L, and an outer peripheral surface 13 intersecting with the first inner end surface 11, wherein the outer peripheral surface 13 has an outer thread portion 131 surrounding an open end of the inserting space 12.

The nut member 20 includes an end wall 21, and a peripheral wall 22 intersecting with the end wall 21, the end wall 21 having a second inner end surface 211 facing the insertion space 12, and a mounting hole 212 communicating from the second inner end surface 211 to the outside, the peripheral wall 22 having an inner peripheral surface 221 intersecting with the second inner end surface 211, and an internal threaded portion 222 disposed on the inner peripheral surface 221 and capable of being screwed with the external threaded portion 131.

The friction ring 30 includes a bearing section 31, a guiding section 32 connected to one side of the bearing section 31 along the axis L, a bearing hole 33 corresponding to the bearing section 31, and a through hole 34 disposed on one side of the bearing hole 33 along the axis L and communicating with the bearing hole 33 and the insertion space 12. The bearing section 31 has a first side end surface 311 abutting against the first inner end surface 11, and a second side end surface 312 opposite to the first side end surface 311 along the axis L and abutting against the second inner end surface 211. The guiding section 32 protrudes from the first side surface 311 and extends along the axis L, and the guiding section 32 extends into the inserting space 12. The receiving hole 33 is recessed from the second side surface 312, and is defined by a shoulder surface 331 between the first side surface 311 and the second side surface 312, and an inner ring surface 332 connected between the shoulder surface 331 and the second side surface 312.

The limiting member 40 is rotatably mounted in the receiving hole 33 of the friction ring 30, and includes an outer annular wall 41 having a C-shaped cross section perpendicular to the axis L, and an inner annular wall 42 connected to the inner side of the outer annular wall 41, wherein the inner annular wall 42 has a C-shaped cross section perpendicular to the axis L, and has a plurality of engaging portions 421 engaging with the corresponding recessed ring portions 102. A depth D between the second side end surface 312 of the friction ring 30 and the shoulder surface 331 is greater than a height H of the limiting element 40 corresponding to the axis L, and when the limiting element 40 is installed in the bearing hole 33 of the friction ring 30, a gap exists between the limiting element 40 and the second inner end surface 211 of the nut element 20, so that the limiting element 40 is not driven by the nut element 20 to rotate.

As shown in fig. 1 and fig. 2, when the joint is to be assembled, the limiting member 40 is first installed in the receiving hole 33 of the friction ring 30, and then the guiding segment 32 of the friction ring 30 is extended into the insertion space 12, so that the friction ring 30 and the limiting member 40 are positioned relative to the body 10, and then the internal thread portion 222 of the nut member 20 is screwed onto the external thread portion 131 of the body 10, so that the friction ring 30 and the limiting member 40 can be stably positioned between the body 10 and the nut member 20.

Finally, the protection tube 1 is inserted from the mounting hole 212 of the nut member 20, during the insertion process, the limiting member 40 can be elastically deformed in the radial direction by the pushing force of the protection tube 1, so that the protection tube 1 smoothly passes through the limiting member 40, until the protection tube 1 is inserted to a sufficient length, the locking portion 421 of the limiting member 40 is locked and positioned with one of the concave ring portions 102 of the protection tube 1, and the protection tube 1 cannot be pulled out along the axis L in the direction away from the body 10, thereby completing the assembly.

In the assembling process, if the nut member 20 is rotated relatively tightly with respect to the body 10, by utilizing the gap between the limiting member 40 and the second inner end surface 211 of the nut member 20, the second inner end surface 211 will press on the second side end surface 312 of the friction ring 30 without pressing the limiting member 40, and even when the protective tube 1 is rotated relatively to the limiting member 40 by a relatively large rotating force, the protective tube 1 will not be damaged by the locking portion 421 of the limiting member 40. In addition, since the limiting member 40 can freely rotate in the inserting space 12, the limiting member 40 can be prevented from being clamped in the inserting space 12 and rotating relative to the protection tube 1, so that the clamping portion 421 of the limiting member 40 cuts the protection tube 1.

When in use, because the depth D between the second side end surface 312 of the friction ring 30 and the shoulder surface 331 is greater than the height H of the limiting element 40 corresponding to the axis L, and when the limiting element 40 is installed in the receiving hole 33 of the friction ring 30, a gap exists between the limiting element 40 and the second inner end surface 211 of the nut 20, when the protection tube 1 is rotated around the axis L by an external force, the limiting element 40 can rotate around the axis L along with the protection tube 1 in the insertion space 12, so as to allow the protection tube 1 to flexibly rotate relative to the body 10, the nut 20, and the friction ring 30, so that when the protection tube 1 is used for passing an electric wire of a general machine, the electric wire can be allowed to freely rotate along with the motion of the machine, and particularly when the electric wire of a mechanical arm above three axes is used for passing the electric wire, the electric wire can smoothly rotate, so as to avoid the electric wire from being stuck and pulled, and affecting the precision of the mechanical arm.

It should be noted that the guiding section 32 of the friction ring 30 can be omitted (not shown), and the same purpose and technical effect as the above embodiment of the present invention can be achieved by only using the bearing section 31 and the stepped bearing hole 33 and through hole 34 disposed inside the bearing section 31.

Claims (3)

1. A flexible protection tube connects, is applicable to and supplies the protection tube to insert along the axis and establish, the protection tube has the several along the concave ring portion that the axis was arranged and is set up, connect contain the body, the screw cap spare of screw fit in the body, install in the body with friction ring between the screw cap spare, and install in the inside locating part of friction ring, its characterized in that:

the body comprises a first inner end surface and an inserting space which is concavely arranged on the first inner end surface and is arranged along the axis;

the nut piece comprises a second inner end surface facing the inserting space;

the friction ring comprises a first side end face abutting against the first inner end face, a second side end face opposite to the first side end face along the axis and abutting against the second inner end face, a bearing hole formed by the second side end face in a concave mode, and a through hole which is formed in one side of the bearing hole along the axis and communicated with the bearing hole and the inserting space;

the limiting part can be rotatably installed in the bearing hole of the friction ring, and comprises an outer ring wall and an inner ring wall, wherein the cross section of the outer ring wall is perpendicular to the axis and is C-shaped, the inner ring wall is connected to the inner side of the outer ring wall, the cross section of the inner ring wall perpendicular to the axis is also C-shaped, the inner ring wall is provided with at least one clamping part which can be embedded and clamped in the corresponding concave ring part, and a gap is reserved between the limiting part and the second inner end face.

2. The flexible protective tube joint of claim 1, wherein: the bearing hole of the friction ring is defined by a shoulder surface between the first side end surface and the second side end surface and an inner ring surface connected between the shoulder surface and the second side end surface, and the depth between the second side end surface and the shoulder surface is greater than the height of the limiting part corresponding to the axis.

3. A flexible protective pipe joint according to claim 2, wherein: the friction ring further comprises a guide section which is protruded from the first side end face and extends along the axis, and the guide section is arranged in the inserting space in an extending mode.

Images