CN209799852U - fixing tool for pedal and upright post of ladder - Google Patents
fixing tool for pedal and upright post of ladder Download PDFInfo
- Publication number
- CN209799852U CN209799852U CN201822239889.5U CN201822239889U CN209799852U CN 209799852 U CN209799852 U CN 209799852U CN 201822239889 U CN201822239889 U CN 201822239889U CN 209799852 U CN209799852 U CN 209799852U
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- Prior art keywords
- expansion
- hole
- fixing tool
- expansion structure
- upright post
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002184 metal Substances 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 241000446313 Lamella Species 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 230000009194 climbing Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Abstract
The utility model relates to a fixing tool for a pedal and a stand column of a ladder, wherein the pedal comprises a stepping section and connecting sections arranged at two ends of the stepping section, the connecting sections and the stand column are metal tubes, and a connecting hole matched with the connecting sections is transversely arranged at the position of the stand column corresponding to the stepping; the outer diameter of the connecting section is smaller than the width of the connecting hole; the fixing tool comprises an expansion structure and a driving structure; the expansion structure comprises at least two expansion pieces which are arranged in an involutory way, the peripheral surfaces of the at least two expansion pieces are provided with bulges outwards, and the at least two expansion pieces are provided with a constraint structure which is used for preventing the expansion structures from relatively scattering; the inner central area of the at least two expansion sheets is provided with a conical expansion hole arranged along the axial direction, and the aperture of the conical expansion hole is gradually reduced from the inlet end to the outlet end; the driving structure comprises a cone matching the expansion orifice, the cone having a diameter decreasing in the driving direction with respect to said expansion orifice.
Description
Technical Field
The utility model relates to a fixed frock and fixed method, concretely relates to fixed frock that is used for footboard and stand of ladder, be used for very much the metal tubular footboard and the metal tubular stand fixed connection of ladder.
Background
Ladders are common climbing tools and are generally divided into straight ladders, herringbone ladders, dual-purpose ladders, extension ladders and the like. Ladders are generally constructed from two parallel arranged uprights and a plurality of parallel arranged steps.
In the past, when the steps and the upright posts of the ladder are connected, rivets are generally adopted, but the connection mode also needs additional parts (namely rivets) to fix the steps and the upright posts, and the operation is relatively troublesome.
In view of the above, it is an object of the present invention to provide a fixture for fixing a step and a pillar of a ladder.
Disclosure of Invention
The utility model aims to provide a: the special fixing tool for the pedal and the upright post of the ladder is provided, and the defects that extra parts are needed for connection by rivets and installation is relatively troublesome are overcome.
in order to achieve the above purpose, the utility model adopts the technical scheme that: a fixing tool for a pedal and an upright post of a ladder is disclosed, wherein the pedal comprises a stepping section and connecting sections arranged at two ends of the stepping section, the connecting sections and the upright post are both metal tubes, and a connecting hole matched with the connecting sections is transversely formed in the position, corresponding to stepping, of the upright post; the outer diameter of the connecting section is smaller than the width of the connecting hole;
the fixing tool comprises an expansion structure and a driving structure; the expansion structure comprises at least two expansion pieces which are arranged in an involutory mode, the peripheral surfaces of the at least two expansion pieces are provided with bulges outwards, and the at least two expansion pieces are provided with a constraint structure which is used for preventing the expansion structures from being dispersed relatively; the inner central area of the at least two expansion sheets is provided with a conical expansion hole arranged along the axial direction, and the aperture of the conical expansion hole is gradually reduced from the inlet end to the outlet end;
The driving structure comprises a cone matched with the expansion hole, and the diameter of the cone is gradually reduced along the driving direction relative to the expansion hole;
Under the operating condition, the connecting section is inserted into the connecting hole of the stand column, the expansion structure is inserted into the pipe of the connecting section from the free end of the connecting section, the cone is inserted into the expansion hole from the inlet end of the expansion hole, and at least two expansion sheets of the expansion structure are spread through the inclined plane matching relation, so that the expansion sheets drive the protrusion of the periphery to move around, the metal pipes of the connecting section and the stand column are deformed simultaneously, and finally the fixing of the connecting section and the metal pipes is realized.
The relevant content in the above technical solution is explained as follows:
1. In the above scheme, the expansion structure further comprises a positioning base, wherein a mounting hole is formed in the positioning base, the expansion structure is axially positioned in the mounting hole, and the expansion sheet of the expansion structure can move along the radial direction of the mounting hole.
2. In the above solution, the positioning base includes a positioning plate and a base plate; the positioning plate is provided with a first through hole, the base plate is provided with a second through hole, the positioning plate and the base plate are fixedly connected in parallel, the first through hole of the positioning plate and the second through hole of the base plate are arranged in alignment, and an annular groove is formed between the positioning plate and the second connecting plate;
An annular convex edge is arranged on the periphery of the inlet end region of the expansion structure corresponding to the annular groove, and the diameter of the annular groove is larger than that of the annular convex edge; in an assembly state, the annular picture of the expansion structure is embedded in the annular groove, so that the expansion structure is axially positioned relative to the base, and the expansion sheet of the expansion structure can move along the radial direction;
under the working state, the positioning plate is abutted against the peripheral area of the connecting hole on the upright post.
3. In the above scheme, the expansion holes are conical or pyramidal.
The constraint structure is an elastic sleeve sleeved on the periphery of the expansion structure and corresponds to the elastic sleeve, and a groove for embedding the elastic sleeve is formed in the peripheral surface of the expansion structure along the circumferential direction.
4. in the above scheme, the constraint structure is an elastic sleeve sleeved on the periphery of the expansion structure, and the outer peripheral surface of the expansion structure is circumferentially provided with a groove for the elastic sleeve to be embedded into, corresponding to the elastic sleeve.
5. in the above solution, the protrusion comprises three protruding rings arranged on the outer circumferential surface of the expansion structure along the circumferential direction; in a working state, the concave position between the two convex rings is arranged corresponding to at least one side wall of the upright post; the other convex ring is positioned on the inner side of the inner wall of the other side wall of the upright post.
The utility model discloses a theory of operation and advantage as follows:
The utility model discloses a fixed frock for footboard and stand of ladder, the cone is inserted in the inflation hole by the entry end in inflation hole, through inclined plane cooperation relation, makes two at least lamella inflation pieces of expanding structure strut to make the inflation piece drive the arch of periphery toward the motion all around, thereby make the tubular metal resonator of linkage segment, stand simultaneously deform, finally realize both fixedly.
The utility model discloses simple structure thinks about ingeniously, and convenient operation can be easily, fast, conveniently be fixed in the stand reliably with the linkage segment of marking time, realizes connection between them.
drawings
the drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for assisting the understanding of the present application, and are not particularly limited to the shapes, the proportional sizes, and the like of the respective members in the present application. Those skilled in the art, having the benefit of the teachings of this application, may select various possible shapes and proportional sizes to implement the present application, depending on the particular situation. In the drawings:
FIG. 1 is a perspective view showing the extended state of the cone of the present embodiment 1;
FIG. 2 is a front view of the cone of the present embodiment 1 in an extended state;
FIG. 3 is a sectional view showing the extended state of the cone of the present embodiment 1;
FIG. 4 is a perspective view showing a retracted state of the cone of the present embodiment 1;
FIG. 5 is a front view of the cone retracted state of the present embodiment 1;
FIG. 6 is a sectional view showing the cone retracted state of the present embodiment 1;
fig. 7 is a perspective view of the power mechanism of the embodiment 1 in a driving state;
Fig. 8 is a front view of the driving state of the power mechanism of the embodiment 1;
Fig. 9 is a sectional view showing a driving state of the power mechanism according to the embodiment 1;
FIG. 10 is a perspective view showing the extended state of the cone of the present embodiment 2;
FIG. 11 is a front view of the cone of the present embodiment 2 in an extended state;
FIG. 12 is a sectional view showing the extended state of the cone of the present embodiment 2;
FIG. 13 is an exploded view of the cone structure, the expansion structure and the first positioning block of this embodiment 1;
FIG. 14 is a perspective view of the cone structure, the expansion structure and the first positioning block of the present embodiment 1;
FIG. 15 is a perspective view of the cone structure and the expanded structure of the present embodiment 1;
FIG. 16 is a perspective view of the cone structure, the expansion structure and the first positioning block of this embodiment 3;
fig. 17 is a schematic view of a working state of the fixing tool in the embodiment 1;
fig. 18 is a schematic view of a second working state of the fixing tool in the embodiment 1;
FIG. 19 is an enlarged view of the embodiment shown at A in FIG. 17;
Fig. 20 is an enlarged view of the embodiment shown at B in fig. 18.
in the above drawings: 1. an expanded structure; 10. an intumescent sheet; 11. a convex ring; 2. a drive structure; 3. a power plant; 4. a positioning base; 5. an elastic sleeve; 6. stepping; 60. a connecting section; 7. and (4) a column.
Detailed Description
the invention will be further described with reference to the following drawings and examples:
Example (b): fixing tool for pedal and upright post of ladder
Referring to fig. 17-20, the pedal 6 includes a stepping section and connecting sections 60 disposed at two ends of the stepping section, the connecting sections 60 and the upright posts 7 are both metal tubes, and a connecting hole matched with the connecting section 60 is transversely formed at a position of the upright post 7 corresponding to the stepping 6; the outer diameter of the connecting section 60 is smaller than the width of the connecting hole.
referring to fig. 1-9, 13-15, 17-20, the fixture includes an expansion structure 1 and a drive structure 2. Wherein the radial dimension of the expansion structure 1 matches the inner wall of the connecting section 60. The expansion structure 1 comprises four expansion pieces 10 which are oppositely arranged, the peripheral surfaces of the four expansion pieces 10 are outwards provided with protrusions, and the four expansion pieces 10 are provided with a constraint structure which is used for preventing the expansion structure 1 from relatively scattering. In this embodiment, the constraint structure is an elastic sleeve 5 sleeved on the periphery of the expansion structure 1, and corresponds to the elastic sleeve 5, grooves for the elastic sleeve 5 to be embedded are formed in the peripheral surface of the expansion structure 1 along the circumferential direction, in this embodiment, three elastic sleeves 5 are provided, and are distributed at intervals on the peripheral surface of the expansion structure 1.
The inner central area of the four-piece expansion sheet 10 is provided with a conical expansion hole arranged along the axial direction, the aperture of the conical expansion hole is gradually reduced from the inlet end to the outlet end, wherein the expansion hole in the embodiment is a conical hole.
the driving structure 2 comprises a cone matching the expansion opening, the diameter of which tapers in the driving direction with respect to the conical expansion opening.
In this embodiment, the expansion structure further comprises a positioning base 4, a mounting hole is formed in the positioning base 4, the expansion structure 1 is axially positioned in the mounting hole, and the expansion sheet 10 of the expansion structure 1 can move along the radial direction of the mounting hole.
the positioning base 4 includes a positioning plate and a base plate. The positioning plate is provided with a first through hole, the base plate is provided with a second through hole, the positioning plate is fixedly connected with the base plate in parallel, the first through hole of the positioning plate is aligned with the second through hole of the base plate, and an annular groove is formed between the positioning plate and the second connecting plate. Corresponding to the annular groove, the periphery of the inlet end region of the expansion structure 1 is provided with an annular convex edge, and the diameter of the annular groove is larger than that of the annular convex edge. In the assembled state, the annular picture of the expansion structure 1 is embedded in the annular groove, so that the expansion structure 1 is axially positioned relative to the base, and the expansion pieces 10 of the expansion structure 1 can move in the radial direction.
In this embodiment, the device further comprises a power device 3, the power device 3 is an electric cylinder, and a piston rod of the electric cylinder is used as an output shaft, acts on the tail end of the cone, and is used for driving the cone to move along the movement direction.
In addition, in the present embodiment, the projection includes three convex rings 11 arranged in the circumferential direction on the outer circumferential surface of the expansion structure 1.
in a working state, the connecting section 60 is inserted into the connecting hole of the upright post 7, the expansion structure 1 is inserted into the pipe of the connecting section 60 from the free end of the connecting section 60, and the positioning plate of the positioning base 4 abuts against the peripheral area of the connecting hole of the upright post 7. The cone is inserted into the expansion hole from the inlet end of the expansion hole when the recessed position between the two collars 11 corresponds to the position of the column 7 on the inner side wall and when the other collar 11 is positioned on the inner side of the inner wall of the outer side wall of the column 7. Through the inclined plane cooperation relation, make at least two lamella expansion pieces 10 of expansion structure 1 strut to make expansion piece 10 drive the arch of periphery and move around, thereby make linkage segment 60, stand 7's tubular metal resonator simultaneously deformation, finally realize fixing between them.
specifically, when the fixation is required, the operation is performed according to the following steps:
Step 1, inserting the connecting section 60 into the connecting hole of the upright post 7.
Step 2, inserting the expansion structure 1 into the metal pipe of the connecting section 60 from the free end of the connecting section 60.
And 3, abutting the positioning base 4 of the expansion structure 1 against the peripheral area of the connecting hole on the upright post 7.
and 4, inserting the cone into the expansion hole from the inlet end of the expansion hole.
And 5, driving the cone to move from the inlet end of the expansion hole to the outlet end. When two sunken position between the bulge loop 11 corresponds being located the inside wall of stand 7, and when another bulge loop 11 was located the inboard of the inner wall of the lateral wall of stand 7, at this moment, the four-petal inflation piece 10 of drive expanding structure 1 just propped open to certain extent for inflation piece 10 drives the bulge loop 11 of periphery and moves all around, thereby makes linkage segment 60, stand 7's tubular metal resonator simultaneously deformation, finally realizes fixing between them.
with respect to the above embodiments, the changes that may be made by the present invention are described as follows:
1. in the above embodiments, the expansion holes are conical holes, in fact, they may be pyramidal holes, see fig. 10 to 12, and the expansion holes are triangular pyramidal holes as long as the corresponding pyramidal shapes match with the triangular pyramidal holes.
2. In the above embodiments, the power device adopts an electric cylinder, and in fact, an air cylinder or an oil cylinder may also be adopted, and a piston rod of the air cylinder serves as an output shaft, acts on the tail end of the cone, and is used for driving the cone to move along the movement direction; and a piston rod of the oil cylinder is used as an output shaft, acts on the tail end of the cone and is used for driving the cone to move along the movement direction.
3. In the above embodiment, the expansion structure 1 employs four expansion pieces 10, and in fact, four, two, or five expansion pieces 10 may be oppositely disposed.
4. In the above embodiment, referring to fig. 16, two sets of fixing tools may share one base to perform two fixing operations at the same time, which is not limited to this embodiment.
it will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It is to be noted that, in the description of the present application, the meaning of "a plurality" is two or more unless otherwise specified.
The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.
a plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.
it is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego the subject matter and should not be construed as an admission that the applicant does not consider such subject matter to be part of the disclosed subject matter.
The above list of details is only for the concrete description of the feasible embodiments of the present application, they are not intended to limit the scope of the present application, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present application are intended to be included within the scope of the present application.
Claims (6)
1. a fixing tool for a pedal and an upright post of a ladder is disclosed, wherein the pedal comprises a stepping section and connecting sections arranged at two ends of the stepping section, the connecting sections and the upright post are both metal tubes, and a connecting hole matched with the connecting sections is transversely formed in the position, corresponding to stepping, of the upright post; the outer diameter of the connecting section is smaller than the width of the connecting hole;
The method is characterized in that: the fixing tool comprises an expansion structure and a driving structure; the expansion structure comprises at least two expansion pieces which are arranged in an involutory mode, the peripheral surfaces of the at least two expansion pieces are provided with bulges outwards, and the at least two expansion pieces are provided with a constraint structure which is used for preventing the expansion structures from being dispersed relatively; the inner central area of the at least two expansion sheets is provided with a conical expansion hole arranged along the axial direction, and the aperture of the conical expansion hole is gradually reduced from the inlet end to the outlet end;
The driving structure comprises a cone matched with the expansion hole, and the diameter of the cone is gradually reduced along the driving direction relative to the expansion hole;
under the operating condition, the connecting section is inserted into the connecting hole of the stand column, the expansion structure is inserted into the pipe of the connecting section from the free end of the connecting section, the cone is inserted into the expansion hole from the inlet end of the expansion hole, and at least two expansion sheets of the expansion structure are spread through the inclined plane matching relation, so that the expansion sheets drive the protrusion of the periphery to move around, the metal pipes of the connecting section and the stand column are deformed simultaneously, and finally the fixing of the connecting section and the metal pipes is realized.
2. the fixing tool for the pedals and the upright posts of the ladder according to claim 1, characterized in that: the expansion structure is characterized by further comprising a positioning base, wherein a mounting hole is formed in the positioning base, the expansion structure is axially positioned in the mounting hole, and an expansion sheet of the expansion structure can move along the radial direction of the mounting hole.
3. a fixing tool for a pedal and a column of a ladder as claimed in claim 2, wherein: the positioning base comprises a positioning plate and a base plate; the positioning plate is provided with a first through hole, the base plate is provided with a second through hole, the positioning plate and the base plate are fixedly connected in parallel, the first through hole of the positioning plate and the second through hole of the base plate are arranged in alignment, and an annular groove is formed between the positioning plate and the second connecting plate;
an annular convex edge is arranged on the periphery of the inlet end region of the expansion structure corresponding to the annular groove, and the diameter of the annular groove is larger than that of the annular convex edge; in an assembly state, the annular picture of the expansion structure is embedded in the annular groove, so that the expansion structure is axially positioned relative to the base, and the expansion sheet of the expansion structure can move along the radial direction;
under the working state, the positioning plate is abutted against the peripheral area of the connecting hole on the upright post.
4. The fixing tool for the pedals and the upright posts of the ladder according to claim 1, characterized in that: the expansion holes are conical or pyramidal.
5. The fixing tool for the pedals and the upright posts of the ladder according to claim 1, characterized in that: the constraint structure is an elastic sleeve sleeved on the periphery of the expansion structure and corresponds to the elastic sleeve, and a groove for embedding the elastic sleeve is formed in the peripheral surface of the expansion structure along the circumferential direction.
6. The fixing tool for the pedals and the upright posts of the ladder according to claim 1, characterized in that: the bulge comprises three convex rings which are arranged on the peripheral surface of the expansion structure along the circumferential direction; in a working state, the concave position between the two convex rings is arranged corresponding to at least one side wall of the upright post; the other convex ring is positioned on the inner side of the inner wall of the other side wall of the upright post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822239889.5U CN209799852U (en) | 2018-12-28 | 2018-12-28 | fixing tool for pedal and upright post of ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822239889.5U CN209799852U (en) | 2018-12-28 | 2018-12-28 | fixing tool for pedal and upright post of ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209799852U true CN209799852U (en) | 2019-12-17 |
Family
ID=68819137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822239889.5U Withdrawn - After Issue CN209799852U (en) | 2018-12-28 | 2018-12-28 | fixing tool for pedal and upright post of ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209799852U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505511A (en) * | 2018-12-28 | 2019-03-22 | 苏州飞华铝制工业有限公司 | For the pedal of ladder and the fixing tool of column and fixing means |
-
2018
- 2018-12-28 CN CN201822239889.5U patent/CN209799852U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505511A (en) * | 2018-12-28 | 2019-03-22 | 苏州飞华铝制工业有限公司 | For the pedal of ladder and the fixing tool of column and fixing means |
| CN109505511B (en) * | 2018-12-28 | 2023-12-19 | 苏州飞华铝制工业有限公司 | Fixing tool and fixing method for pedal and upright post of ladder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20191217 Effective date of abandoning: 20231219 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20191217 Effective date of abandoning: 20231219 |