CN112283221A

CN112283221A - Extension tube assembly

Info

Publication number: CN112283221A
Application number: CN202010795813.XA
Authority: CN
Inventors: 陈建宏
Original assignee: Xiamen Qundian Household Ornament Co ltd
Current assignee: Xiamen Qundian Household Ornament Co ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-01-29
Anticipated expiration: 2040-08-10
Also published as: CN112283221B

Abstract

The invention discloses a telescopic tube assembly, comprising an inner tube and an outer tube, the inner tube is slidably connected in the outer tube; the inner tube is provided with a first through hole penetrating inside and outside, the inner end of the inner tube is fixed with a fixed joint, and the fixed joint A chute is recessed, and a lock piece that can slide inside and outside is slidably connected to the chute, and a first elastic body that pushes against the lock piece is arranged in the chute; a fixing sleeve is fixed inside the inner end of the outer tube, and the fixing sleeve There is a second through hole penetrating inside and outside, and the outer tube is provided with a third through hole penetrating inside and outside; the first elastic body pushes against the locking piece so that the locking piece can extend out of the first through hole and be inserted into the second through hole and the third through hole. inside the through hole. It has the following advantages: easy processing, low cost, convenient assembly, firm, stable and reliable locking.

Description

Extension tube assembly

Technical Field

The invention relates to the technical field of household articles or camping articles, in particular to a telescopic pipe assembly.

Background

The conventional telescopic tube assembly, as shown in fig. 1 and 2, includes an inner tube 1 'and an outer tube 2', both of which have a non-circular cross-section, such as a regular polygon, to limit the relative rotation between the inner tube 1 'and the outer tube 2'. The outer peripheral wall of the inner tube 1 ' is formed with a chute 11 ' which is arranged concavely by pressing, and balls 12 ' which can slide inside and outside along the chute 11 ' and an elastic body 13 ' which is pressed against the balls 12 ' are arranged in the chute 11 '; the outer tube 2 'is concavely provided with a through hole 21'. The inner tube 1 'is slidably connected to the outer tube 2', and the balls 12 'are supported by the elastic body 13', pass through the notches of the sliding grooves 11 'and are inserted into the through holes 21'. Because need the compression moulding spout, consequently on the one hand, the processing cost is high, and the degree of difficulty is big, and the rejection rate is high, and on the other hand, the circular tube is difficult for the suppression to go out the spout, because of inner tube and outer tube cross-section need set up to non-circular.

Disclosure of Invention

The present invention provides a telescoping tube assembly that overcomes the deficiencies of the prior art telescoping tube assemblies.

The technical scheme adopted by the invention for solving the technical problem is as follows: the telescopic pipe assembly comprises an inner pipe and an outer pipe, and the inner pipe is connected in the outer pipe in a sliding manner; the inner tube is provided with a first through hole which penetrates through the inner tube and the outer tube, a fixed joint is fixedly arranged in the inner end of the inner tube, the fixed joint is concavely provided with a chute, a locking piece which can slide inside and outside is connected in the chute in a sliding way, and a first elastic body which is propped against the locking piece is arranged in the chute; a fixed sleeve is fixedly arranged in the inner end of the outer pipe, the fixed sleeve is provided with a second through hole which penetrates through the inner part and the outer part, and the outer pipe is provided with a third through hole which penetrates through the inner part and the outer part; the first elastic body abuts against the locking piece to enable the locking piece to extend out of the first through hole and to be inserted into the second through hole and the third through hole.

In one embodiment: the fixed sleeve is provided with a fixed sleeve section and two suspension pieces fixedly connected with one end face of the fixed sleeve section, and a first guide structure is formed between the two suspension pieces; the fixed connection head is provided with a fixed connection section and an external expansion section, the fixed connection section is fixedly inserted in the inner end of the inner pipe, the external expansion section is positioned outside the inner pipe, the peripheral wall of the external expansion section protrudes out of the peripheral wall of the inner pipe, and a second guide structure is formed on the external expansion section; the first guide structure and the second guide structure are matched to realize guiding, and the first through hole and the second through hole can be aligned through the guide structures.

In one embodiment: : the two sides of the tail end of each suspension piece are provided with first guide inclined planes, the adjacent first guide inclined planes of the two suspension pieces are matched to form a V-shaped guide groove, and the first guide structure comprises the V-shaped guide groove; two sides of the tail end of the outward expansion section are provided with second guide inclined planes, the two second guide inclined planes of the outward expansion section are matched to form a V-shaped insertion block, and the second guide structure comprises the V-shaped insertion block; the V-shaped guide groove is matched with the V-shaped inserting block.

In one embodiment: the suspension piece is provided with a fixed connection section and a guide section, the first guide structure is formed between the guide sections of the two suspension pieces, and a yielding groove for providing a yielding space for the deformation of the suspension piece is formed between the fixed connection sections of the two suspension pieces.

In one embodiment: the outer tube is provided with a lock hole which penetrates through the inner tube and the outer tube, the outer tube is fixedly sleeved in the outer tube, and the bulge is inserted into the lock hole in an adaptive mode to realize fixed connection.

In one embodiment: the connecting line of the bulge and the second through hole, the connecting line of the lock hole and the third through hole are parallel to the telescopic direction of the telescopic pipe component.

In one embodiment: the periphery of the tail end of the fixed sleeve section is convexly provided with a ring bulge, and the ring bulge is abutted against the end surface of the inner end of the outer tube.

In one embodiment: the plug pin penetrates through the inner end of the inner pipe and the fixed connection head, and two ends of the plug pin do not extend out of the outer peripheral wall of the inner pipe.

In one embodiment: the outer tube is fixedly provided with a fixed seat, and the outer tube is also internally provided with a second elastic body which is propped against between the inner end of the inner tube and the fixed seat.

In one embodiment: the end of the locking piece is provided with a third guide structure; the inner and outer tubes are both circular tubes.

Compared with the background technology, the technical scheme has the following advantages:

the fixed joint is fixedly arranged in the inner pipe, the chute is arranged on the fixed joint, and the locking piece and the elastic body can be arranged by matching with the through hole of the inner pipe, so that the processing is convenient, the cost is low, and the assembly is convenient; the outer pipe is fixedly provided with the fixed sleeve, and the locking piece can extend out of the through hole of the inner pipe and be inserted into the through hole of the fixed sleeve and the through hole of the outer pipe to realize locking connection, so that the locking connection is firm, stable and reliable.

Drawings

The invention is further described with reference to the following figures and detailed description.

FIG. 1 is a perspective view of a prior art telescoping assembly.

FIG. 2 is a cross-sectional schematic view of a prior art inner tube.

FIG. 3 is one of the embodiments of the telescoping assembly in an exploded view.

Figure 4 is a second exploded perspective view of the telescoping assembly of the embodiment.

FIG. 5 is a perspective view of an embodiment retraction assembly in an extended state.

FIG. 6 is a perspective view of an embodiment retraction assembly in an extended state with the housing removed.

FIG. 7 is a perspective view of an embodiment retraction assembly in a retracted state.

FIG. 8 is a perspective view of an embodiment retraction assembly in a retracted state with the housing removed.

FIG. 9 is a perspective view of the fixation sleeve and fixation head of an embodiment in a non-retracted state.

FIG. 10 is a perspective view of an embodiment of the securing sleeve and securing head in a retracted state.

FIG. 11 is a perspective view of a fastening head according to an embodiment.

FIG. 12 is a cross-sectional view of an embodiment of a securing head with the locking element in an extended position.

Figure 13 is a cross-sectional view of an embodiment of a securing head with the locking element in a retracted position.

Fig. 14 is a perspective view of an embodiment retainer.

FIG. 15 is a perspective view of an embodiment of a retainer with a suspension tab in a deformed configuration.

Description of reference numerals:

the inner pipe 1, the first through hole 11 and the bolt 12;

the outer tube 2, a third through hole 21, a lock hole 22, a fixed seat 23 and a second elastic body 24;

the fixed joint 3, the chute 31, the locking piece 32, the first elastic body 33, the fixed joint section 34, the outward expanding section 35, the second guide inclined plane 36 and the V-shaped insert block 37;

the fixing sleeve 4, the second through hole 41, the fixing sleeve section 42, the suspension 43, the first guide inclined surface 44, the V-shaped guide groove 45, the relief groove 46, the protrusion 47 and the annular protrusion 48.

Detailed Description

Referring to fig. 3 to 15, the telescopic tube assembly includes an inner tube 1 and an outer tube 2, the inner tube 1 is slidably connected to the outer tube 2, the inner tube 1 and the outer tube 2 are cylindrical tubes and made of elastic fiber, metal or plastic stool, and the telescopic tube assembly can be used for umbrella poles, tent poles, etc.; the inner tube 1 is provided with a first through hole 11 which penetrates through the inner part and the outer part, the inner end of the inner tube 1 is fixedly provided with a fixed joint 3, the fixed joint 3 is concavely provided with a chute 31, a locking piece 32 which can slide inside and outside is connected in the chute 31 in a sliding way, the sliding direction of the locking piece 32 is arranged along the radial direction, a first elastic body 33 which supports against the locking piece 32 is arranged in the chute 31, and the first elastic body 33 is a compression spring; a fixed sleeve 4 is fixedly arranged in the inner end of the outer tube 2, the fixed sleeve 4 is provided with a second through hole 41 which penetrates through the inner part and the outer part, and the outer tube 2 is provided with a third through hole 21 which penetrates through the inner part and the outer part; this first elastomer 11 top supports latch fitting 32 and makes latch fitting 32 stretch out first through-hole 11 and second through-hole 41 and insert in the third through-hole 21 to make flexible subassembly be in the lock and connect the state, press the latch fitting and enable the latch fitting internal contraction in order to break away from second, the through-hole, adjustable flexible subassembly length this moment. The fixed joint is fixedly arranged in the inner pipe, the chute is arranged on the fixed joint, and the locking piece and the elastic body can be arranged by matching with the through hole of the inner pipe, so that the processing is convenient, the cost is low, and the assembly is convenient; the outer pipe is fixedly provided with the fixed sleeve, and the locking piece can extend out of the through hole of the inner pipe and be inserted into the through hole of the fixed sleeve and the through hole of the outer pipe to realize locking connection, so that the locking connection is firm, stable and reliable.

In this embodiment: the fixing sleeve 4 has a fixing sleeve section 42 and two suspension pieces 43 fixed on one end face of the fixing sleeve section 42 and symmetrically arranged, both sides of the tail end of the suspension piece 43 are provided with first guiding inclined planes 44, the tail end of the suspension piece 43 forms a sharp angle structure, the adjacent first guiding inclined planes 44 of the two suspension pieces 43 are matched to form a V-shaped guiding groove 45, and the V-shaped guiding groove forms a first guiding structure; the fixed joint 3 is provided with a fixed joint section 34 and an external expansion section 35, the fixed joint section 34 is fixedly inserted into the inner end of the inner tube 1 in a matching way, the external expansion section 35 is positioned outside the inner tube 1, the peripheral wall of the external expansion section 35 protrudes out of the peripheral wall of the inner tube 1, both sides of the tail end of the external expansion section 35 are provided with second guide inclined planes 36, the two second guide inclined planes 36 of the external expansion section 35 are matched to form a V-shaped insertion block 37, and the V-shaped insertion block 37 forms a second guide structure; the V-shaped guide slot and the V-shaped insert block cooperate, i.e. the first guide structure and the second guide structure cooperate to achieve guidance by which the first through hole 11, the second through hole 41, and the third through hole 21 can be aligned.

The suspension 43 has a fixed connection section and a guide section, the V-shaped guide groove 45 is formed between the guide sections of the two suspensions 43, and an abdicating groove 46 for providing abdicating space for the suspension 43 to deform is formed between the fixed connection sections of the two suspensions 43; the protruding arch 47 that is equipped with of this terminal lateral wall of suspension 43, this outer tube 2 are equipped with inside and outside lockhole 22 that runs through, and this solid cover 4 is located in outer tube 2 and protruding 47 adaptation inserts lockhole 22 in order to realize the rigid coupling, convenient assembly, firm in connection after the assembly. The line connecting the protrusion 47 and the second through hole 41 and the line connecting the lock hole 22 and the third through hole 21 are parallel to the telescopic direction of the telescopic tube assembly, so that the telescopic tube assembly is convenient to extend and lock. The fixed sleeve section 42 has a ring protrusion 48 protruding from the end periphery, the ring protrusion 48 abuts against the end surface of the inner end of the outer tube 2, and the protrusion 47 is just inserted into the lock hole 22 for convenient assembly.

The concrete structure of the fixed joint 3 fixedly arranged in the inner end of the inner pipe 1 is as follows: the plug is characterized by further comprising a plug 12, wherein the plug 12 penetrates through the inner end of the inner pipe 1 and the fixed connection section 34 of the fixed connection head 3, two ends of the plug are flush with the outer peripheral wall of the inner pipe, the plug is convenient to assemble by adopting the structure, the plug is sleeved in the outer pipe, and the plug can be limited to be separated from the outer pipe.

The outer tube 2 is fixedly provided with a fixed seat 23, the outer tube 2 is also provided with a second elastic body 24, the second elastic body 24 is propped between the inner end of the inner tube and the fixed seat, and the second elastic body can enable the telescopic assembly to automatically extend. The elongation changes are as follows: as shown in fig. 7 and 8, the retraction assembly is in a retracted state; as shown in fig. 12 and 13, the locking member is pressed to be retracted so as to be separated from the second and third through holes; as shown in fig. 8 and 10, both are extended by the elastic force of the second elastic body; as shown in fig. 9 and 10, the V-shaped guide groove and the V-shaped insert block cooperate to guide the V-shaped insert block to be inserted into the V-shaped guide groove, and after the V-shaped insert block is inserted into the V-shaped guide groove, the V-shaped insert block is positioned to align the first through hole 11, the second through hole 41 and the third through hole 21; as shown in fig. 9, 10, 12 and 13, the locking member is inserted into the second through hole 41 and the third through hole 21 to be locked to be in the extended state.

This latch fitting 32 is equipped with third guide structure, and this third guide structure is if for the bulb structure, and this latch fitting 32 middle part is protruding to be equipped with the bulge loop, and this first elastomer cover is established at latch fitting rear portion and is pushed up between bulge loop and spout tank bottom, and this latch fitting 32 front portion stretches out the spout notch. The ball head structure also plays a role in guiding and can retract in a telescopic driving locking piece after being pressed.

The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents.

Claims

1. The telescopic pipe assembly comprises an inner pipe and an outer pipe, and the inner pipe is connected in the outer pipe in a sliding manner; the method is characterized in that: the inner tube is provided with a first through hole which penetrates through the inner tube and the outer tube, a fixed joint is fixedly arranged in the inner end of the inner tube, the fixed joint is concavely provided with a chute, a locking piece which can slide inside and outside is connected in the chute in a sliding way, and a first elastic body which is propped against the locking piece is arranged in the chute; a fixed sleeve is fixedly arranged in the inner end of the outer pipe, the fixed sleeve is provided with a second through hole which penetrates through the inner part and the outer part, and the outer pipe is provided with a third through hole which penetrates through the inner part and the outer part; the first elastic body abuts against the locking piece to enable the locking piece to extend out of the first through hole and to be inserted into the second through hole and the third through hole.

2. The extension tube assembly of claim 1, wherein: the fixed sleeve is provided with a fixed sleeve section and two suspension pieces fixedly connected with one end face of the fixed sleeve section, and a first guide structure is formed between the two suspension pieces; the fixed connection head is provided with a fixed connection section and an external expansion section, the fixed connection section is fixedly inserted in the inner end of the inner pipe, the external expansion section is positioned outside the inner pipe, the peripheral wall of the external expansion section protrudes out of the peripheral wall of the inner pipe, and a second guide structure is formed on the external expansion section; the first guide structure and the second guide structure are matched to realize guiding, and the first through hole and the second through hole can be aligned through the guide structures.

3. The extension tube assembly of claim 2, wherein: the two sides of the tail end of each suspension piece are provided with first guide inclined planes, the adjacent first guide inclined planes of the two suspension pieces are matched to form a V-shaped guide groove, and the first guide structure comprises the V-shaped guide groove; two sides of the tail end of the outward expansion section are provided with second guide inclined planes, the two second guide inclined planes of the outward expansion section are matched to form a V-shaped insertion block, and the second guide structure comprises the V-shaped insertion block; the V-shaped guide groove is matched with the V-shaped inserting block.

4. The extension tube assembly of claim 2, wherein: the suspension piece is provided with a fixed connection section and a guide section, the first guide structure is formed between the guide sections of the two suspension pieces, and a yielding groove for providing a yielding space for the deformation of the suspension piece is formed between the fixed connection sections of the two suspension pieces.

5. The extension tube assembly of claim 2, wherein: the outer tube is provided with a lock hole which penetrates through the inner tube and the outer tube, the outer tube is fixedly sleeved in the outer tube, and the bulge is inserted into the lock hole in an adaptive mode to realize fixed connection.

6. The extension tube assembly of claim 5, wherein: the connecting line of the bulge and the second through hole, the connecting line of the lock hole and the third through hole are parallel to the telescopic direction of the telescopic pipe component.

7. The extension tube assembly of claim 2, wherein: the periphery of the tail end of the fixed sleeve section is convexly provided with a ring bulge, and the ring bulge is abutted against the end surface of the inner end of the outer tube.

8. The extension tube assembly according to any one of claims 1 to 7, wherein: the plug pin penetrates through the inner end of the inner pipe and the fixed connection head, and two ends of the plug pin do not extend out of the outer peripheral wall of the inner pipe.

9. The extension tube assembly according to any one of claims 1 to 7, wherein: the outer tube is fixedly provided with a fixed seat, and the outer tube is also internally provided with a second elastic body which is propped against between the inner end of the inner tube and the fixed seat.

10. The extension tube assembly according to any one of claims 1 to 7, wherein: the end of the locking piece is provided with a third guide structure; the inner and outer tubes are both circular tubes.