CN212838809U - Pull rod assembly and telescopic pull rod - Google Patents
Pull rod assembly and telescopic pull rod Download PDFInfo
- Publication number
- CN212838809U CN212838809U CN202020355185.9U CN202020355185U CN212838809U CN 212838809 U CN212838809 U CN 212838809U CN 202020355185 U CN202020355185 U CN 202020355185U CN 212838809 U CN212838809 U CN 212838809U
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- pipe
- sliding sleeve
- inner sliding
- pull rod
- section bar
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Abstract
The utility model provides a pull rod assembly and flexible pull rod, including section bar pipe, stop collar, inner sliding sleeve and U-shaped shell fragment, the section bar pipe is hollow structure, stop collar joint in the one end of section bar pipe, inner sliding sleeve joint in the other end of section bar pipe, the terminal surface of inner sliding sleeve is equipped with U-shaped shell fragment installation position, the U-shaped shell fragment sets up in U-shaped shell fragment installation position, the one end of U-shaped shell fragment is equipped with spacing bump, the pipe wall of section bar pipe corresponds spacing bump and is equipped with section bar pipe bump opening, the side of inner sliding sleeve corresponds spacing bump and is equipped with inner sliding sleeve bump opening, spacing bump passes section bar pipe bump opening and inner sliding sleeve bump opening, the one end that the section bar pipe is close to stop collar is equipped with spacing. The beneficial effects of the utility model reside in that: the pull rod assembly is simple in structure, high in reliability and easy to produce and assemble, tolerance requirements on parts are reduced, assembling efficiency is improved, and production cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of telescopic pull rod structure technique and specifically relates to indicate a draw bar assembly and telescopic pull rod.
Background
The telescopic pull rod is an accessory with a very wide application range, can be contracted to become small and exquisite and convenient to carry, and can be pulled out to be lengthened when in use, so that the telescopic pull rod is convenient for users to use.
The position between pull rod and the pull rod is fixed to the frictional force that current pull rod produced through the gasket in the pull rod interference fit between the outer pull rod, and interior gasket deflection needs accurate size control, thereby interior gasket is after long-time the use, and easy deformation loses effect, needs to improve prior art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: aiming at the defects of the prior art, the pull rod assembly and the telescopic pull rod which are simple in structure, high in reliability and convenient to assemble are provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a pull rod assembly, includes section bar pipe, stop collar, inner sliding sleeve and U-shaped shell fragment, the section bar pipe is hollow structure, the stop collar joint in the one end of section bar pipe, the inner sliding sleeve joint in the other end of section bar pipe, the terminal surface of inner sliding sleeve is equipped with U-shaped shell fragment installation position, the U-shaped shell fragment set up in U-shaped shell fragment installation position, the one end of U-shaped shell fragment is equipped with spacing bump, the pipe wall of section bar pipe corresponds spacing bump is equipped with section bar pipe bump opening, the side of inner sliding sleeve corresponds spacing bump is equipped with inner sliding sleeve bump opening, spacing bump passes section bar pipe bump opening with inner sliding sleeve bump opening, the section bar pipe is close to the one end of stop collar is equipped with spacing hole.
Furthermore, the external diameter of stop collar is less than the internal diameter of section bar pipe, the outside of stop collar is equipped with the stop collar ka tai, the section bar pipe corresponds the stop collar ka tai is equipped with section bar pipe draw-in groove.
Furthermore, one end of the limiting sleeve is provided with a limiting sleeve boss, and the outer diameter shape of the limiting sleeve boss is matched with that of the section pipe.
Furthermore, one side of the stop collar clamping table, which is far away from the stop collar boss, is provided with a stop collar boss installation inclined plane.
Further, the internal diameter of inner sliding sleeve is greater than the external diameter of section bar pipe, the inner wall of inner sliding sleeve is equipped with inner sliding sleeve ka tai, the section bar pipe corresponds inner sliding sleeve ka tai is equipped with the inner sliding sleeve draw-in groove.
Furthermore, the aperture of the limiting hole is matched with the outer diameter of the convex point of the inner sliding sleeve.
Furthermore, the inner wall of the end, far away from the section pipe, of the limiting sleeve is provided with a limiting sleeve cutting angle.
Furthermore, the top of the limiting salient point of the U-shaped elastic sheet is arc-shaped.
Further, the sectional shape of the section bar pipe is one of a triangle, a polygon or a circle.
The utility model also relates to a telescopic pull rod, which comprises a first pull rod component, a tail end pull rod component and at least one pull rod component as mentioned above,
the first pull rod assembly comprises a first section pipe, a first limiting sleeve and a plug, the first section pipe is of a hollow structure, the first limiting sleeve is inserted into one end of the first section pipe, and the plug is inserted into the other end of the first section pipe;
the tail end pull rod assembly comprises a tail end profile pipe, a tail end inner sliding sleeve and a U-shaped elastic sheet, wherein the tail end profile pipe is of a hollow structure, the tail end inner sliding sleeve is sleeved at one end of the tail end profile pipe, the end face of the tail end inner sliding sleeve is provided with a U-shaped elastic sheet installation position, the U-shaped elastic sheet is arranged at the U-shaped elastic sheet installation position, one end of the U-shaped elastic sheet is provided with a limiting convex point, the pipe wall of the tail end profile pipe is provided with a profile pipe convex point opening corresponding to the limiting convex point, the side face of the tail end inner sliding sleeve is provided with an inner sliding sleeve convex point opening corresponding to the limiting convex point, and the limiting convex point penetrates through the tail end;
the end pull rod assembly is slidable within the profile assembly, and the profile assembly is slidable within the first profile assembly.
The beneficial effects of the utility model reside in that: the pull rod assembly is simple in structure, high in reliability and easy to produce and assemble, tolerance requirements on parts are reduced, assembling efficiency is improved, and production cost is reduced.
Drawings
The specific structure of the present invention is detailed below with reference to the accompanying drawings:
fig. 1 is an exploded view of the tie rod assembly of the present invention;
fig. 2 is a schematic view of the overall structure of the telescopic rod of the present invention;
1-profile tube; 11-profile tube clamp groove; 12-inner sliding sleeve neck; 13-opening salient points of the profile tube; 14-a limiting hole; 2-a limit sleeve; 21-a boss of the limiting sleeve; 22-a stop collar clamping table; 23-installing an inclined plane on a boss of the limiting sleeve; 3-inner sliding sleeve; 31-U-shaped elastic piece mounting positions; 32-inner sliding sleeve salient point opening; 4-U-shaped elastic sheet; 41-limit salient points;
100-a first tie rod assembly; 101-plug; 200-a second tie rod assembly; 201-a second limit bump; 300-a third tie rod assembly; 400-end tie rod assembly; 401-end limit bump.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that the description of the invention referring to "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implying any number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Example 1
Referring to fig. 1, a pull rod assembly includes a section bar tube 1, a position-limiting sleeve 2, an inner sliding sleeve 3 and a U-shaped spring plate 4, the section bar pipe 1 is of a hollow structure, the limiting sleeve 2 is clamped at one end of the section bar pipe 1, the inner sliding sleeve 3 is clamped at the other end of the section bar pipe 1, the end surface of the inner sliding sleeve 3 is provided with a U-shaped elastic sheet mounting position 31, the U-shaped elastic sheet 4 is arranged at the U-shaped elastic sheet mounting position 31, one end of the U-shaped elastic sheet 4 is provided with a limit salient point 41, the pipe wall of the section bar pipe 1 is provided with a section bar pipe convex point opening 13 corresponding to the limit convex point 41, the side surface of the inner sliding sleeve 3 is provided with an inner sliding sleeve salient point opening 32 corresponding to the limit salient point 41, the limiting convex point 41 penetrates through the convex point opening 13 of the profile pipe and the convex point opening 32 of the inner sliding sleeve, and one end, close to the limiting sleeve 2, of the profile pipe 1 is provided with a limiting hole 14.
In this embodiment, the section bar pipe can be metal, plastics or carbon fiber etc. can make pipy hard material, cup joints stop collar and inner sliding sleeve on the section bar pipe, can let the pull rod assembly prevent to rock when sliding in other pull rod assembly.
The U-shaped elastic sheet is arranged to clamp the pull rod assembly into the limiting hole of the other pull rod assembly when the pull rod assembly slides in place in the other pull rod assembly, so that the limiting effect is achieved.
From the above description, the beneficial effects of the present invention are: the pull rod assembly is simple in structure, high in reliability and easy to produce and assemble, tolerance requirements on parts are reduced, assembling efficiency is improved, and production cost is reduced.
Example 2
On the basis of embodiment 1, the external diameter of stop collar 2 is less than the internal diameter of section bar pipe 1, the outside of stop collar 2 is equipped with stop collar ka tai 22, section bar pipe 1 corresponds stop collar ka tai 22 is equipped with section bar pipe draw-in groove 11.
In this embodiment, through realizing the block of stop collar and section bar pipe in section bar pipe draw-in groove with stop collar ka tai card and being connected, can prevent effectively that the stop collar from deviating from the section bar pipe at the pull in-process, guaranteed the reliability of stop collar and section bar union coupling.
Example 3
On the basis of embodiment 2, one end of the limiting sleeve 2 is provided with a limiting sleeve boss 21, and the outer diameter shape of the limiting sleeve boss 21 is matched with the outer diameter shape of the section tube 1.
In this embodiment, the stop collar boss can protect the end of the profile tube and make the end of the pull rod assembly smoother.
Example 4
On the basis of embodiment 3, a stop collar boss installation inclined surface 23 is arranged on one side of the stop collar clamping table 22, which is far away from the stop collar boss 21.
In this embodiment, the boss installation inclined plane of the stop collar can reduce the resistance of clamping the stop collar into the section bar pipe, and the installation of the stop collar is facilitated.
Example 5
On the basis of embodiment 4, the internal diameter of inner sliding sleeve 3 is greater than the external diameter of section bar pipe 1, the inner wall of inner sliding sleeve 3 is equipped with the inner sliding sleeve ka tai, section bar pipe 1 corresponds the inner sliding sleeve ka tai is equipped with inner sliding sleeve draw-in groove 12.
In this embodiment, the inner sliding sleeve cup joints in the section bar pipe, can reduce the sliding resistance of pull rod assembly when other pull rod assemblies slide and prevent that pull rod assembly from rocking at the slip in-process.
Example 6
On the basis of embodiment 5, the aperture of the limiting hole 14 is matched with the outer diameter of the limiting salient point 41.
In this embodiment, in order to stably fix the two pull rod assemblies, the aperture of the limiting hole cannot be too large, and preferably, the aperture of the limiting hole is adapted to the outer diameter of the limiting bump, or may be slightly larger.
Example 7
On the basis of the embodiment 6, the inner wall of the limiting sleeve 2 at the end far away from the section pipe 1 is provided with a limiting sleeve chamfer.
In this embodiment, stop collar corner cut can let draw bar assembly when accomodating, and the unblock between the draw bar assembly is realized to spacing bump application of force more easily with the inside of spacing bump impressed section bar pipe.
Example 8
On the basis of the embodiment 7, the top of the limiting salient point 41 of the U-shaped elastic sheet 4 is arc-shaped.
In this embodiment, the round and smooth top of the limit bump can enable the pull rod assembly to apply force to the limit bump more easily when the pull rod assembly is stored.
Example 9
On the basis of the embodiment 8, the sectional shape of the section pipe 1 is one of a triangle, a polygon or a circle.
In this embodiment, can be according to user's demand with the arbitrary shape of section bar pipe design for the cavity, the shape that also needs to change stop collar and inner sliding sleeve is with the adaptation section bar pipe.
Example 10
Referring to fig. 2, the present invention further relates to a telescopic drawbar comprising a first drawbar assembly 100, a terminal drawbar assembly, and a second drawbar assembly and a third drawbar assembly according to any one of the above embodiments,
the first pull rod assembly 100 comprises a first section pipe, a first limiting sleeve and a plug 101, wherein the first section pipe is of a hollow structure, the first limiting sleeve is inserted into one end of the first section pipe, and the plug is inserted into the other end of the first section pipe;
the tail end pull rod assembly 400 comprises a tail end profile pipe, a tail end inner sliding sleeve and a U-shaped elastic sheet, wherein the tail end profile pipe is of a hollow structure, the tail end inner sliding sleeve is sleeved at one end of the tail end profile pipe, the end surface of the tail end inner sliding sleeve is provided with a U-shaped elastic sheet installation position, the U-shaped elastic sheet is arranged at the U-shaped elastic sheet installation position, one end of the U-shaped elastic sheet is provided with a limiting convex point, the pipe wall of the tail end profile pipe is provided with a profile pipe convex point opening corresponding to the limiting convex point, the side surface of the tail end inner sliding sleeve is provided with an inner sliding sleeve convex point opening corresponding to the limiting convex point, and the limiting convex point penetrates through the tail end;
the end pull rod assembly 400 is slidable within the profile assembly, which is slidable within the first profile assembly.
In this embodiment, four sections of the drawbar assemblies are used to illustrate the structure of the drawbar assembly and the matching relationship between the drawbar assembly and the drawbar assembly to achieve the telescopic function, and similarly, two, three, five or more sections of the drawbar assembly may be used to achieve the telescopic function.
Except for the first handle assembly 100 and the end handle assembly 400, each handle assembly is substantially identical in construction, differing only in thickness, with the second handle assembly 200 sliding within the first handle assembly 100, the third handle assembly 300 sliding within the second handle assembly 200, and the end handle assembly 400 sliding within the third handle assembly 300.
When the pull rod needs to be extended, after the second pull rod assembly 200 is pulled out, the second limit protruding point 201 of the U-shaped elastic sheet of the second pull rod assembly is clamped into the limit hole of the first pull rod assembly 100, the second pull rod assembly 200 cannot be retracted into the first pull rod assembly 100, after the third pull rod assembly 300 is pulled out, the limit protruding point of the U-shaped elastic sheet of the third pull rod assembly is clamped into the limit hole of the second pull rod assembly, the third pull rod assembly 300 cannot be retracted into the second pull rod assembly 200, after the tail end pull rod assembly 400 is pulled out, the tail end limit protruding point 401 of the U-shaped elastic sheet of the tail end pull rod assembly is clamped into the limit hole of the third pull rod assembly, and the tail end pull rod assembly 400 cannot be retracted into the third pull rod assembly.
When the pull rod needs to be retracted, the second limit salient point 201 of the U-shaped elastic sheet of the second pull rod assembly is pressed into the second pull rod assembly (in the process, the limit sleeve of the first pull rod assembly can also be used for pressing the second limit salient point), the second pull rod assembly can slide and be retracted in the first pull rod assembly, after the second pull rod assembly is retracted to a certain position, the third limit salient point of the U-shaped elastic sheet of the third pull rod assembly props against the limit sleeve of the second pull rod assembly, the limit sleeve of the second pull rod assembly presses the third limit salient point into the third pull rod assembly, the third pull rod assembly can be retracted in the second pull rod assembly, after the third pull rod assembly is retracted to a certain position, the tail end limit salient point 401 of the U-shaped elastic sheet of the tail pull rod assembly props against the limit sleeve of the third pull rod assembly, and the limit sleeve of the tail end limit salient point 401 is pressed into the tail end pull rod assembly, the end pull rod assembly 400 can be collapsed within the third pull rod assembly 300.
In order to prevent the mutual influence between the limiting hole and the limiting protrusion of the pull rod assembly, the orientation of the limiting hole of each pull rod assembly of the telescopic pull rod is different.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A drawbar assembly, comprising: including section bar pipe, stop collar, inner sliding sleeve and U-shaped shell fragment, the section bar pipe is hollow structure, the stop collar joint in the one end of section bar pipe, the inner sliding sleeve joint in the other end of section bar pipe, the terminal surface of inner sliding sleeve is equipped with U-shaped shell fragment installation position, the U-shaped shell fragment set up in U-shaped shell fragment installation position, the one end of U-shaped shell fragment is equipped with spacing bump, the pipe wall of section bar pipe corresponds spacing bump is equipped with section bar pipe bump opening, the side of inner sliding sleeve corresponds spacing bump is equipped with inner sliding sleeve bump opening, spacing bump passes section bar pipe bump opening with inner sliding sleeve bump opening, the section bar pipe is close to the one end of stop collar is equipped with spacing hole.
2. The handle assembly of claim 1, wherein: the outer diameter of the limiting sleeve is smaller than the inner diameter of the section pipe, a limiting sleeve clamping table is arranged on the outer side of the limiting sleeve, and a section pipe clamping groove is formed in the section pipe corresponding to the limiting sleeve clamping table.
3. The handle assembly of claim 2, wherein: one end of the limiting sleeve is provided with a limiting sleeve boss, and the outer diameter shape of the limiting sleeve boss is matched with that of the section tube.
4. The handle assembly of claim 3, wherein: one side of the stop collar clamping table, which is far away from the stop collar boss, is provided with a stop collar boss installation inclined plane.
5. The handle assembly of claim 4, wherein: the inner diameter of the inner sliding sleeve is larger than the outer diameter of the profile pipe, an inner sliding sleeve clamping table is arranged on the inner wall of the inner sliding sleeve, and an inner sliding sleeve clamping groove is formed in the profile pipe corresponding to the inner sliding sleeve clamping table.
6. The handle assembly of claim 5, wherein: the aperture of the limiting hole is matched with the outer diameter of the convex point of the inner sliding sleeve.
7. The handle assembly of claim 6, wherein: the inner wall of the limiting sleeve at one end far away from the section pipe is provided with a limiting sleeve chamfer.
8. The handle assembly of claim 7, wherein: the top of the limiting salient point of the U-shaped elastic sheet is arc-shaped.
9. The handle assembly of claim 8, wherein: the section of the section bar pipe is triangular, polygonal or circular.
10. A telescopic pull rod is characterized in that: comprising a first tie rod assembly, a second tie rod assembly, a third tie rod assembly and an end tie rod assembly, the second and third tie rod assemblies having a construction identical to that of any one of the tie rod assemblies of claims 1-9, but being of different thicknesses,
the first pull rod assembly comprises a first section pipe, a first limiting sleeve and a plug, the first section pipe is of a hollow structure, the first limiting sleeve is inserted into one end of the first section pipe, and the plug is inserted into the other end of the first section pipe;
the tail end pull rod assembly comprises a tail end profile pipe, a tail end inner sliding sleeve and a U-shaped elastic sheet, wherein the tail end profile pipe is of a hollow structure, the tail end inner sliding sleeve is sleeved at one end of the tail end profile pipe, the end face of the tail end inner sliding sleeve is provided with a U-shaped elastic sheet installation position, the U-shaped elastic sheet is arranged at the U-shaped elastic sheet installation position, one end of the U-shaped elastic sheet is provided with a limiting convex point, the pipe wall of the tail end profile pipe is provided with a profile pipe convex point opening corresponding to the limiting convex point, the side face of the tail end inner sliding sleeve is provided with an inner sliding sleeve convex point opening corresponding to the limiting convex point, and the limiting convex point penetrates through the tail end;
the second pull rod assembly slides in the first pull rod assembly, the third pull rod assembly slides in the second pull rod assembly, and the tail end pull rod assembly slides in the third pull rod assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020355185.9U CN212838809U (en) | 2020-03-19 | 2020-03-19 | Pull rod assembly and telescopic pull rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020355185.9U CN212838809U (en) | 2020-03-19 | 2020-03-19 | Pull rod assembly and telescopic pull rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212838809U true CN212838809U (en) | 2021-03-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020355185.9U Active CN212838809U (en) | 2020-03-19 | 2020-03-19 | Pull rod assembly and telescopic pull rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212838809U (en) |
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2020
- 2020-03-19 CN CN202020355185.9U patent/CN212838809U/en active Active
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