CN113550964B - Linear type connecting structure and connecting method of section bars - Google Patents
Linear type connecting structure and connecting method of section bars Download PDFInfo
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- CN113550964B CN113550964B CN202110831097.0A CN202110831097A CN113550964B CN 113550964 B CN113550964 B CN 113550964B CN 202110831097 A CN202110831097 A CN 202110831097A CN 113550964 B CN113550964 B CN 113550964B
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 13
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000005452 bending Methods 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 4
- 238000005553 drilling Methods 0.000 abstract description 4
- 238000001746 injection moulding Methods 0.000 description 17
- 238000002347 injection Methods 0.000 description 13
- 239000007924 injection Substances 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 229910000851 Alloy steel Inorganic materials 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000392 somatic effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
- F16B13/06—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
- F16B13/061—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve of the buckling type
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention relates to the field of section bar assembly, and particularly discloses a linear type connecting structure of a section bar, which comprises a section bar connecting part and a section bar connecting piece, wherein the section bar connecting part is arranged on the section bar connecting part; the profile connecting part is characterized by comprising a limiting plate formed in a cavity; a first through hole penetrating through the limiting plate along the axial direction of the sectional material is formed in the middle of the limiting plate; the profile connecting piece comprises a connecting sleeve and two connecting auxiliary pieces which are symmetrically arranged along the radial central section of the connecting sleeve; two ends of the connecting sleeve are respectively connected with two connecting auxiliary pieces; the two connecting auxiliary parts are respectively inserted into the cavities of different sectional materials and locked with the limiting plate. The invention can avoid drilling on the surface of the section bar and ensure the stability of the connecting structure between the section bars. The invention also provides a connecting method for connecting the first profile and the second profile by using the connecting structure.
Description
Technical Field
The invention relates to the field of section bar assembly, in particular to a linear type connecting structure and a connecting method of a section bar.
Background
The section bar is a straight bar which is formed by plastic processing and has a certain section shape and size. The section bar is widely used in modern industrial equipment and various production lines due to light weight, high structural strength and high rigidity. When the existing section bars are connected, bolts are generally needed to penetrate through the section bars and the connecting pieces for connection, so that holes need to be drilled or prefabricated on the surface of the section bars, the structure of the section bars is inevitably needed to be damaged, and the rigidity of the section bars is influenced; and the bolt is exposed on the surface of the section after penetrating through the section, so that the surface of the section is uneven.
The invention patent with the publication number of CN105604440B discloses a profile connecting piece and a connecting method, which are used for horizontally connecting a first profile and a second profile, wherein the folding direction of the first profile and the second profile is the profile connecting direction; the section bar connecting piece comprises: the first fixing piece, the second fixing piece and the distance adjusting piece are used for connecting the first fixing piece and the second fixing piece along the connecting direction of the section bar; the body of the first fixing piece is sequentially provided with a first fixing part and an intermediate fixing part along the connecting direction of the section bar, the body of the second fixing piece is provided with a second fixing part, and the intermediate fixing part is positioned between the second fixing part and the first fixing part; the second fixing part is connected with the second section bar; the first fixing part and the middle fixing part are respectively connected with the first profile and the second profile.
In the above patent, the first fixing member and the first section bar are connected, and the second fixing member and the second section bar are connected by drilling holes in advance on the surface of the section bar, and then the section bar and the fixing member are locked by adopting structures such as bolts, so that the structure of the section bar is damaged, the rigidity of the section bar is affected, and when the section bar is subjected to acting force along the axial direction of the section bar, the shearing force of the section bar and the connecting member vertically acts on the bolts, so that the structural stability is poor, and the drilled hole part of the section bar is easy to deform.
Therefore, an improved section bar connecting structure is needed to be provided, so that the situation that the rigidity of the section bar is influenced by drilling holes on the surface of the section bar is avoided; the shearing force of the sectional material and the connecting piece is prevented from acting on the bolt, and the structural stability is improved.
Disclosure of Invention
In order to solve the problems that the rigidity of the section bar is reduced and the stability of a connecting structure is poor due to the fact that the section bar is connected with a connecting piece through bolts and holes need to be drilled, the invention provides an improved connecting structure for the linear section bar on the one hand; on the other hand, the connection method for connecting the profiles by using the connection structure is also provided, and the specific scheme is as follows.
On one hand, the invention provides a linear connecting structure of a profile, which comprises a profile connecting part and a profile connecting piece; the profile connecting part is characterized by comprising a limiting plate formed in a cavity; a first through hole penetrating through the limiting plate along the axial direction of the sectional material is formed in the middle of the limiting plate;
the profile connecting piece comprises a connecting sleeve and two connecting auxiliary pieces which are symmetrically arranged along the radial central section of the connecting sleeve; two ends of the connecting sleeve are respectively connected with two connecting auxiliary pieces;
the two connecting auxiliary parts are respectively inserted into the cavities of different sectional materials and locked with the limiting plate.
As a further improvement of the present invention, the connection auxiliary member includes:
the middle of the locking sleeve is provided with a second through hole which penetrates through the locking sleeve along the axial direction of the locking sleeve, and the locking sleeve is inserted into the cavity along the end part of the sectional material and abuts against the limiting plate;
a connecting rod comprising a first rod body portion and a second rod body portion; the first rod body part is inserted into the second through hole and penetrates through the first through hole to extend into the cavity, and the second rod body part extends out of the cavity and is connected with the connecting sleeve;
the locking device comprises a first fixed end, a second fixed end and a deformation element; the first fixed end is fixedly connected with one end of the first rod body part; the second fixed end is movably sleeved on the first rod body part and abuts against the locking sleeve; one end and the first fixed end fixed connection of deformation component, the other end and second fixed end fixed connection, along the radial direction expansion of first pole somatic part extremely offset with the limiting plate when just deformation component warp.
As a further improvement of the invention, the connecting sleeve comprises a first internally threaded hole and a second internally threaded hole with opposite thread directions; the second rod body part is provided with an external thread which is in snap fit with the first thread inner hole or the second thread inner hole; the two connecting rods connected with the auxiliary part are respectively in threaded fit with the connecting sleeve through the second rod body part.
As one of the optional modes of the invention, the deformation element comprises a first end wall connected with the first fixed end, a second end wall connected with the second fixed end, and side walls respectively connecting the first end wall and the second end wall; the side wall comprises a plurality of foldable corrugated sheets; the plurality of foldable corrugated sheets are sequentially connected along the folding telescopic direction.
As a second alternative of the present invention, the deformation element comprises a plurality of bending members uniformly arranged around the first rod portion; the curved member arches away from the first stem portion to form a first arch.
As a further improvement of the invention, an auxiliary connecting part is formed at one end of the locking sleeve far away from the deformation element, and the auxiliary connecting part extends outwards along the axial direction of the section bar; the profile connector further comprises an insert; the surface of the auxiliary connecting part is provided with an embedded groove extending along the axial direction of the sectional material; and two ends of the embedded part are respectively embedded into the embedding grooves of the auxiliary connecting parts which are symmetrically arranged.
As a further improvement of the invention, an auxiliary connecting part is formed at one end of the locking sleeve far away from the deformation element, and the auxiliary connecting part extends outwards along the axial direction of the section bar; the profile connector further comprises an insert; the surface of the auxiliary connecting part is provided with an embedded groove extending along the axial direction of the section bar; the two ends of the embedded part are respectively embedded into the embedded grooves of the auxiliary connecting parts which are symmetrically arranged.
As a further improvement of the invention, the shape of the coaming outer ring is the same as the shape of the outer surface of the section bar.
In another aspect, the present invention further provides a connecting method for connecting a first profile and a second profile by using any one of the above connecting structures, comprising the steps of:
fitting a first connection aid into the cavity of the first profile; fitting a second connection aid into the cavity of the second profile;
connecting the first connection auxiliary member and the second connection auxiliary member with the connection sleeve, respectively; the connecting sleeve is respectively matched with the connecting rod threads of the first connecting auxiliary piece and the second connecting auxiliary piece;
rotating the connecting sleeve to enable the connecting rod to move relative to the locking sleeve until the deformation element deforms to abut against the limiting plate;
and respectively embedding the plurality of embedded parts into the embedded grooves of the first section bar and the second section bar, so that the protection plates are mutually abutted to form a coaming surrounding the auxiliary connecting part.
As a further development of the invention, the fitting of the first connection aid into the cavity of the first profile comprises: inserting the connecting rod into the cavity of the first section bar, and enabling the locking device to penetrate through the limiting plate; inserting the locking sleeve into the cavity of the first section bar to enable the locking sleeve to abut against the limiting plate; the connecting rod is pulled to enable the second fixed end to be abutted against the locking sleeve.
Has the advantages that: according to the invention, the two connecting auxiliary pieces are respectively locked with the limiting plates in the section bar, and then are connected with the two connecting auxiliary pieces through the connecting sleeve, so that the surface of the section bar is prevented from being drilled, and the rigidity of the section bar is ensured; meanwhile, when the sectional material is subjected to acting force along the axial direction of the sectional material, the acting force is transmitted through the limiting plate and does not directly act on the surface of the sectional material, so that the deformation of the sectional material is avoided, and the stability of the structure is ensured.
Drawings
FIG. 1 is a schematic view of a first profile being connected to a second profile;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 4 is a schematic view of a state where the connection auxiliary is not locked with the position limiting plate;
FIG. 5 is a schematic view illustrating a state that the connection auxiliary member is locked with the position limiting plate;
FIG. 6 is a schematic view of a locking device;
FIG. 7 is a schematic view of another locking device;
FIG. 8 is a schematic structural diagram of a first connecting rod;
fig. 9 is a schematic view of a curved member.
Reference numerals: 1. a first profile; 2. a second profile; 3. a profile connector; 4. a connecting sleeve; 5. a first connection auxiliary member; 6. a second connection aid; 7. an insert; 11. a first limit plate; 12. a first through hole A; 21. a second limiting plate; 22. a first through hole B; 51. a first locking sleeve; 52. a first connecting rod; 53. a first locking device; 54. a second through hole; 55. a first lever body portion; 56. a second shaft portion; 61. a second locking sleeve; 62. a second connecting rod; 63. a second locking device; 531. a first fixed end; 532. a second fixed end; 533. a bending member; 534. a first arching portion; 535. a second arching portion; 536. a first end wall; 537. a second end wall; 538. a corrugated sheet; 71. a built-in plate; 72. a protection plate; 5331. a first injection molding section; 5332. a second injection molding section; 5333. and a third injection molding section.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
Referring to fig. 1 and 2, the embodiment describes in detail a linear connection structure of profiles, which includes two profiles, a first profile 1 and a second profile 2; the connecting structure further comprises a profile connecting piece 3 for connecting the first profile 1 and the second profile 2, wherein the connecting direction of the first profile 1 and the second profile 2 is a linear direction, namely the axis of the first profile 1 is parallel to the axis of the second profile 2.
Specifically, referring to fig. 3, a cavity is provided in the first profile 1, and the shape of the cavity is adapted to the shape of the profile and is non-cylindrical; the cavity of a typical profile is also generally non-cylindrical. Inside shaping of the die cavity of first section bar 1 has first limiting plate 11, and the edge of first limiting plate 11 and first section bar 1 integrated into one piece or welding to the first through-hole A12 that runs through along the axial direction of first section bar 1 is seted up to the centre of first limiting plate 11. The second profile 2 is also provided with a cavity inside, the shape of which is adapted to the shape of the profile and is non-cylindrical. Inside shaping of the die cavity of second section bar 2 has second limiting plate 21, and the edge and the 2 integrated into one piece of second section bar or the welding of second limiting plate 21 to the axial direction along second section bar 2 is seted up in the centre of second limiting plate 21 and is run through the first through-hole B22 of second limiting plate 21.
In particular, with reference to fig. 2 and 4, the profile connector 3 comprises a connecting sleeve 4 and two connection aids, namely a first connection aid 5 and a second connection aid 6, arranged symmetrically along a radial central section of the connecting sleeve 4. The first connection aid 5 comprises a first locking sleeve 51, a first connecting rod 52 and a first locking device 53; wherein, the middle of the first locking sleeve 51 is provided with a second through hole 54 which penetrates through the first locking sleeve 51 along the axial direction, and the locking sleeve is inserted into the cavity along the end part of the first section bar 1 and is propped against the first limit plate 11. The first connecting rod 52 comprises a first rod part 55 and a second rod part 56, wherein the first rod part 55 is inserted into the second through hole 54 of the first locking sleeve 51 and extends into the cavity of the first profile 1 after passing through the first through hole B22 on the first limiting plate 11, and the first rod part 55 and the second through hole 54 are both non-cylindrical, so as to limit the relative rotation between the first rod part 55 and the locking sleeve; the second shank portion 56 extends outside the cavity and is connected to the connecting sleeve 4. The first locking device 53 comprises a first fixing end 531, a second fixing end 532 and a deformation element; wherein the first fixing end 531 is welded to or integrally formed with the end of the first lever portion 55, the second fixing end 532 is movably sleeved on the first lever portion 55 along the axial direction of the first lever portion 55, and the second fixing end 532 abuts against the first locking sleeve 51. One end of the deformation element is welded to the first fixing end 531 or integrally formed, the other end of the deformation element is welded to the second fixing end 532 or integrally formed, when the first connecting rod 52 moves outwards from the cavity relative to the first locking sleeve 51, the first fixing end 531 is close to the extrusion deformation element at the second fixing end 532, the deformation element expands along the radial direction of the first rod body portion 55, and therefore the first connecting auxiliary element 5 is locked to the first limiting plate 11 and abuts against the first limiting plate 11.
The second connection auxiliary 6 includes a second locking sleeve 61, a second connecting rod 62 and a second locking device 63, wherein the second locking sleeve 61, the second connecting rod 62 and the second locking device 63 have substantially similar structures to the first locking sleeve 51, the first connecting rod 52 and the first locking device 53; the difference is that the second body part 56 of the first connecting rod 52 is provided with a first external thread, the first body part 55 of the second connecting rod 62 is also provided with a second external thread, and the screwing direction of the first external thread is opposite to that of the second external thread; the corresponding connecting sleeve 4 comprises a first internally threaded hole and a second internally threaded hole with opposite screwing directions; the first external thread is matched with the first internal thread hole, and the second external thread is matched with the second internal thread hole. When the connecting sleeve 4 is rotated, because the shapes of the first rod part 55 and the second through hole 54 limit the relative rotation between the first rod part 55 and the locking sleeve, the shapes of the locking sleeve and the cavity limit the relative rotation between the locking sleeve and the profile, so that the first connecting rod 52 and the second connecting rod 62 respectively move in opposite directions, the first fixed end 531 and the second fixed end 532 extrude deformation elements, the first connecting auxiliary member 5 is locked with the first limiting plate 11, the second connecting auxiliary member 6 is locked with the second limiting plate 21, and the connecting sleeve 4 is respectively connected with the first connecting auxiliary member 5 and the second connecting auxiliary member 6, so that the first profile 1 is connected with the second profile 2.
Adopt above-mentioned structure to connect first section bar 1 and second section bar 2, avoided the surface drilling at the section bar to avoided the influence to section bar rigidity, utilized simultaneously to connect the limiting plate of auxiliary member and die cavity and locked, when the section bar suffered the effort along its axial direction, the effort directly acted on the limiting plate, even the limiting plate takes place the use that deformation can not influence section bar itself yet.
As a further improvement of this embodiment, the second fixed end 532 may be directly welded to the locking sleeve, and the deformation element may be radially expanded and restored to the original state by rotating the connecting sleeve 4 in the forward and reverse directions, so as to facilitate the connection and detachment of the profile member; even if the deformation element is deformed, the deformation element can be restored to the original state due to the welding of the second fixing end 532 and the locking sleeve.
Specifically, the structure of the locking device may be various, and two kinds of locking devices are exemplified in the present embodiment.
Referring to fig. 6, the present embodiment provides a locking device, the shape-changing element includes a first end wall 536 welded or integrally formed with the first fixing plate, a second end wall 537 connected to the second fixing end 532, and side walls respectively connecting the first end wall 536 and the second end wall 537; the side wall includes a plurality of foldable bellows 538; the plurality of foldable corrugated sheets 538 are connected in sequence along the folding and stretching direction. The corrugated plate 538 is made of a metal material, and the folding and extending direction of the corrugated plate 538 is parallel to the axial direction of the profile. When the first connection auxiliary member 5 is not locked with the first restriction plate 11, the corrugated piece 538 can just pass through the first through hole a12 of the first restriction plate 11. When the first connection aid 5 is locked with the first restriction plate 11, the bellows 538 expands in its radial direction and is thereby folded, making the bellows 538 abut against the first restriction plate 11, so that the first connection aid 5 is locked with the first restriction plate 11.
Referring to fig. 7, the present embodiment provides another locking device, in which the shape-changing element includes a plurality of bent members 533 arranged uniformly around the axial direction of the first body portion 55; the curved member 533 is arched away from the first stem portion 55 to form a first arched portion 534. When the first fixing plate and the second fixing end 532 compress the elastic member, the bending member 533 is further arched in the arching direction of the first arching portion 534, so that the first arching portion 534 abuts against the limiting plate, thereby locking the connection aid with the fiber plate.
As a further improvement of this embodiment, the bending member 533 further includes a second arching portion 535 arching toward the direction approaching the first stem portion 55, and the first arching portion 534 is connected to the second arching portion 535 and forms an S shape; the second arching portion 535 is adjacent to the first fixed end 531, and the first arching portion 534 is adjacent to the second fixed end 532; when the first and second fixed ends 531 and 532 press the bent member 533, the first and second arching portions 534 and 535 are reversely deformed, respectively, and when the second arching portion 535 is deformed to abut against the first lever portion 55, the bent member 533 can be prevented from being further deformed, thereby improving the locking effect of the connection auxiliary and the limit plate.
As a further improvement of this embodiment, in order to further improve the locking effect of the connection auxiliary and the limit plate, this embodiment also provides an injection molding method of the bending member 533, specifically, including:
first, the bending member 533 is divided into a first injection-molded section 5331, a second injection-molded section 5332, and a third injection-molded section 5333 in order along the direction from the first arching portion 534 to the second arching portion 535; the first injection molded section 5331 is 1/3 the length of the first arch 534 and the third injection molded section 5333 is 1/3 the length of the second arch 535, as shown with reference to fig. 9.
Specifically, first injection molded section 5331 is adjacent second fixed end 532, third injection molded section 5333 is adjacent first fixed end 531, and second injection molded section 5332 is located between first injection molded section 5331 and third injection molded section 5333.
Second, a mold corresponding to the shape of the bending member 533 is prepared, a first injection molding section 5331 is injection molded using a first metal as a raw material, a second injection molding section 5332 is injection molded using a second metal as a raw material, and a third injection molding section 5333 is injection molded using the first metal as a raw material, wherein the elastic modulus of the first metal is smaller than that of the second metal.
Specifically, the first metal is an aluminum alloy with the elastic modulus strength of about 72GMPa, the second metal is alloy steel with the elasticity of 206GMPa, the aluminum alloy is firstly added into a hopper of an injection molding device as a raw material, a first arch part 534 with the length of 1/3 is injection molded by taking the aluminum alloy as the raw material, and then the aluminum alloy remained in the hopper is discharged in an empty injection molding mode; then adding alloy steel serving as a raw material into a hopper of an injection molding device, injection molding a first arch part 534 with the residual length and a second arch part 535 with the length of 2/3 by taking the alloy steel as the raw material, and then discharging the residual alloy steel in the hopper by empty injection molding; finally, the second arch portion 535 with the remaining length is injection molded by using aluminum alloy as a raw material.
The bending member 533 is injection molded by using metal segments with different elastic moduli; in the process of deforming the bending member 533, the first injection molding section 5331 and the third injection molding section 5333 with lower elastic modulus are used as main deformation sections, so that deformation occurs to expand the bending member 533 in the radial direction, the second injection molding section 5332 abuts against the limiting plate, and the force required for rotating the connecting sleeve 4 is smaller; the second injection-molded section 5332 has a higher hardness because of its higher modulus of elasticity; when the locking device is locked due to the fact that the second injection molding section 5332 abuts against the limiting plate, when the outside exerts axial force on the first section bar 1 or the second section bar 2, the second injection molding section 5332 is not prone to deformation, and connection between the first section bar 1 and the second section bar 2 is stable and firm.
As a further improvement of this embodiment, referring to fig. 2, an auxiliary connecting portion is formed at an end of the locking sleeve away from the deformation element, and the auxiliary connecting portion extends out of the cavity along the axial direction of the profile; and an embedded groove extending along the axial direction of the section bar is formed in the surface of the auxiliary connecting part. That is, the first locking sleeve 51 is formed with a first auxiliary connecting portion, a first embedded groove is formed in the first auxiliary connecting portion, the second locking sleeve 61 is formed with a second auxiliary connecting portion, and a second embedded groove is formed in the second auxiliary connecting portion.
The section connecting piece 3 further comprises an insert 7, wherein the insert 7 comprises an insert plate 71 which is matched with the shape of the insert groove, and a protective plate 72 which is fixedly connected with the insert plate 71; the first auxiliary connecting part and the second auxiliary connecting part respectively comprise a first side surface, a second side surface, a third side surface and a fourth side surface, wherein the first side surface is opposite to the third side surface, the second side surface is opposite to the fourth side surface, and the first side surface is vertical to the second side surface; the insertion plates 71 of the four insertion pieces 7 are respectively inserted into the respective insertion grooves, and the insertion pieces 7 connect the first auxiliary connecting portions and the second auxiliary connecting portions; after insertion, the protective plates 72 abut each other to form a shroud around the secondary connection. The protective plate 72 of each insert 7 is of the same shape as the profile corresponding to each side so that the collar formed around the shroud is of the same shape as the outer surface of the profile. Utilize the embedding piece 7 to connect first supplementary connecting portion and second supplementary connecting portion, the relative rotation between restriction first section bar 1 and the second section bar 2 protects connecting sleeve 4, further guarantees the stability of first section bar 1 and second section bar 2 connection, plays pleasing to the eye effect simultaneously.
Example 2
This example describes in detail the method for connecting the first profile 1 and the second profile 2 by using the connecting structure in example 1, which specifically includes:
a first step of fitting a first connection aid 5 into the cavity of the first profile 1 and a second connection aid 6 into the cavity of the second profile 2, respectively; in the above steps, the assembly process of the first connection auxiliary 5 and the second connection auxiliary 6 is the same, so in this embodiment, only the assembly of the first connection auxiliary 5 into the cavity of the first profile 1 will be specifically described.
The fitting of the first connection aid 5 into the cavity of the first profile 1 comprises in particular: inserting the first connecting rod 52 into the cavity of the first profile 1, so that the first locking device 53 passes through the first through hole a12 on the first limit plate 11; the first locking sleeve 51 is inserted into the cavity of the first profile 1, so that the locking sleeve abuts against the first limiting plate 11, the first connecting rod 52 penetrates through the first locking sleeve 51, and the first connecting rod 52 is pulled so that the second fixed end 532 abuts against the first locking sleeve 51.
When second stiff end 532 and first locking sleeve 51 welding, can directly insert the intracavity of the first section bar 1 with connecting rod and first locking sleeve 51, make the first tight device of lock pass first limiting plate 11, first locking sleeve 51 offsets with first limiting plate 11.
In the second step, the first connecting rod 52 and the second connecting rod 62 are respectively screwed with the connecting sleeve 4 until the two ends of the connecting sleeve 4 are respectively abutted against the two locking sleeves.
In the above process, an acting force toward the outside of the cavity is always applied to the first connecting rod 52 and the second connecting rod 62, so that the second fixed end 532 is always abutted against the locking sleeve, and the locking sleeve is always abutted against the limiting plate.
Thirdly, rotating the connecting sleeve 4 to move the first connecting rod 52 relative to the first locking sleeve 51, and moving the second connecting rod 62 relative to the second locking sleeve 61; until the deformation element deforms to abut against the limiting plate.
In the above process, since the connecting sleeve 4 is respectively in threaded fit with the first connecting rod 52 and the second connecting rod 62, when the connecting sleeve 4 is rotated, the connecting sleeve 4, the first connecting rod 52 and the second connecting rod 62 are not rotated under the shape limitation of the cavity and the second through hole 54, so that the first connecting rod 52 and the second connecting rod 62 move along the axial direction of the profile, and the thread turning directions of the first threaded inner hole and the second threaded inner hole are opposite to each other to make the first connecting rod 52 and the second connecting rod 62 move relatively, so that the first connecting auxiliary member 5 and the first limiting plate 11 are respectively locked, and the second connecting auxiliary member 6 and the second limiting plate 21 are locked.
And fourthly, respectively embedding the plurality of embedding pieces 7 into the embedding grooves of the first section bar 1 and the second section bar 2, so that the protection plates 72 are mutually abutted to form a surrounding plate of the auxiliary connecting part.
The shape and the size of the embedded groove are matched with those of the embedded plate 71, and the embedded plate 71 is tightly matched with the embedded groove after being embedded into the embedded groove and is not easy to fall off. Utilize the relative rotation of insert 7 restriction first section bar 1 and second section bar 2, through protection connecting sleeve 4, avoid connecting sleeve 4 to rotate to the stability of first section bar 1 with second section bar 2 is connected has been improved.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. It will be apparent to those skilled in the art that various equivalent substitutions and obvious modifications can be made without departing from the spirit of the invention, and all changes that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (9)
1. A linear connecting structure of a profile comprises a profile connecting part and a profile connecting piece; the profile connecting part is characterized by comprising a limiting plate formed in a cavity; a first through hole penetrating through the limiting plate along the axial direction of the sectional material is formed in the middle of the limiting plate;
the profile connecting piece comprises a connecting sleeve and two connecting auxiliary pieces which are symmetrically arranged along the radial central section of the connecting sleeve; two ends of the connecting sleeve are respectively connected with two connecting auxiliary pieces;
the two connecting auxiliary pieces are respectively inserted into the cavities of different sectional materials and locked with the limiting plate;
the connection auxiliary member includes:
the middle of the locking sleeve is provided with a second through hole which penetrates through the locking sleeve along the axial direction of the locking sleeve, and the locking sleeve is inserted into the cavity along the end part of the profile and abuts against the limiting plate;
a connecting rod comprising a first rod portion and a second rod portion; the first rod body part is inserted into the second through hole and penetrates through the first through hole to extend into the cavity, and the second rod body part extends out of the cavity and is connected with the connecting sleeve;
the locking device comprises a first fixed end, a second fixed end and a deformation element; the first fixed end is fixedly connected with one end of the first rod body part; the second fixed end is movably sleeved on the first rod body part and abuts against the locking sleeve; one end of the deformation element is fixedly connected with the first fixed end, the other end of the deformation element is fixedly connected with the second fixed end, and the deformation element expands along the radial direction of the first rod body part to abut against the limiting plate when deforming.
2. The linear connecting structure of profiles according to claim 1, characterized in that: the connecting sleeve comprises a first internal thread hole and a second internal thread hole with opposite thread turning directions; the second rod body part is provided with an external thread which is in snap fit with the first thread inner hole or the second thread inner hole; the two connecting rods connected with the auxiliary part are respectively in threaded fit with the connecting sleeve through the second rod body part.
3. The linear connecting structure of profiles according to claim 1, characterized in that: the deformation element comprises a first end wall connected with the first fixed end, a second end wall connected with the second fixed end and side walls respectively connected with the first end wall and the second end wall; the side wall comprises a plurality of foldable corrugated sheets; the plurality of foldable corrugated sheets are sequentially connected along the folding and stretching direction.
4. The linear connecting structure of profiles according to claim 1, characterized in that: the deformation element comprises a plurality of bending members uniformly arranged around the first rod body part; the curved member arches away from the first stem portion to form a first arch.
5. The linear connecting structure of profiles according to claim 1, characterized in that: an auxiliary connecting part is formed at one end of the locking sleeve, which is far away from the deformation element, and the auxiliary connecting part extends outwards along the axial direction of the section bar; the profile connector further comprises an insert; the surface of the auxiliary connecting part is provided with an embedded groove extending along the axial direction of the section bar; and two ends of the embedded part are respectively embedded into the embedding grooves of the auxiliary connecting parts which are symmetrically arranged.
6. The linear connecting structure of profiles according to claim 5, wherein: the embedded part comprises an embedded plate which is matched with the embedded groove in shape and a protective plate which is fixedly connected with the embedded plate; the first side surface, the second side surface, the third side surface and the fourth side surface of the auxiliary connecting part are respectively provided with embedded grooves; the first side face is opposite to the third side face, the second side face is opposite to the fourth side face, and the first side face is vertical to the second side face; the embedded plates of the embedded parts are respectively embedded into the embedded grooves, and the protection plates of the embedded parts are mutually abutted to form a surrounding plate surrounding the auxiliary connecting part.
7. The linear connecting structure of profiles according to claim 6, wherein: the shape of the outer ring of the coaming is the same as the shape of the outer surface of the section bar.
8. A connecting method using the connecting structure according to claim 6 or 7, characterized in that: the method comprises the following steps:
fitting a first connection aid into the cavity of the first profile; fitting a second connection aid into the cavity of the second profile;
connecting the first connection auxiliary member and the second connection auxiliary member with the connection sleeve, respectively; the connecting sleeve is respectively matched with the connecting rod threads of the first connecting auxiliary piece and the second connecting auxiliary piece;
rotating the connecting sleeve to enable the connecting rod to move relative to the locking sleeve until the deformation element deforms to abut against the limiting plate;
and respectively embedding the plurality of embedded parts into the embedded grooves of the first section bar and the second section bar, so that the protection plates are mutually abutted to form a coaming surrounding the auxiliary connecting part.
9. The connecting method according to claim 8, characterized in that: said fitting of the first connection aid into the cavity of the first profile comprises: inserting the connecting rod into a cavity of the first section bar, and enabling the locking device to penetrate through the limiting plate; inserting the locking sleeve into the cavity of the first section bar to enable the locking sleeve to abut against the limiting plate; the connecting rod is pulled to enable the second fixed end to be abutted against the locking sleeve.
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| CN202110831097.0A CN113550964B (en) | 2021-07-22 | 2021-07-22 | Linear type connecting structure and connecting method of section bars |
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| CN202110831097.0A CN113550964B (en) | 2021-07-22 | 2021-07-22 | Linear type connecting structure and connecting method of section bars |
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| CN113550964B true CN113550964B (en) | 2022-09-13 |
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| CN212672173U (en) * | 2020-04-25 | 2021-03-09 | 冯彦华 | Double-end butt joint embedded part |
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| FR2479363A1 (en) * | 1980-03-31 | 1981-10-02 | Morisseau Roger | Sleeve for spigot and socket joint for e.g. demountable fishing rod - has cylindrical bore and taper barrel which houses onto and into connected tubular members |
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| CN113550964A (en) | 2021-10-26 |
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