CN110145522B - Expansion connecting piece - Google Patents
Expansion connecting piece Download PDFInfo
- Publication number
- CN110145522B CN110145522B CN201910534170.0A CN201910534170A CN110145522B CN 110145522 B CN110145522 B CN 110145522B CN 201910534170 A CN201910534170 A CN 201910534170A CN 110145522 B CN110145522 B CN 110145522B
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- Prior art keywords
- expansion
- nut
- connecting piece
- hole
- side plate
- Prior art date
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- 230000000903 blocking effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 241000587161 Gomphocarpus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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
- F16B12/00—Jointing of furniture or the like, e.g. hidden from exterior
- F16B12/10—Jointing of furniture or the like, e.g. hidden from exterior using pegs, bolts, tenons, clamps, clips, or the like
- F16B12/12—Jointing of furniture or the like, e.g. hidden from exterior using pegs, bolts, tenons, clamps, clips, or the like for non-metal furniture parts, e.g. made of wood, of plastics
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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
- F16B13/063—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 by the use of an expander
- F16B13/066—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 by the use of an expander fastened by extracting a separate expander-part, actuated by the screw, nail or the like
Abstract
The invention discloses an expansion connecting piece, which comprises a lifting screw, a side plate connecting piece and an expansion sleeve, wherein the expansion sleeve is provided with an expansion part and an adjusting part, one end of the side plate connecting piece is provided with a connecting rod, the opposite end of the side plate connecting piece is provided with a nut, the lifting screw comprises a screw rod and a head part connected to one end of the screw rod, the side plate connecting piece is in threaded connection with the screw rod through the nut, the side plate connecting piece and the lifting screw rod are arranged in the expansion sleeve, the nut is arranged in the expansion part, the nut moves axially to expand or shrink the expansion part for resetting, the adjusting part is provided with a containing cavity for containing the head part of the lifting screw rod, the side wall of the adjusting part is provided with radial adjusting holes, the containing cavity is communicated with the adjusting holes, the end face of the head part of the lifting screw rod is provided with gear teeth extending along the axial direction, the gear teeth are uniformly arranged at intervals along the circumferential direction of the head part, and tooth grooves are formed between two adjacent gear teeth. Compared with the prior art, the invention has the advantages that: simple structure, easy installation and repeated disassembly and assembly.
Description
Technical Field
The invention relates to the technical field of fasteners, in particular to an expansion connecting piece.
Background
The eccentric connecting piece for connecting the plate-type furniture in the prior art is generally composed of an eccentric wheel, a connecting rod and embedded nuts, and is also called as a three-in-one connecting piece, and can be used for connecting a side plate (a plate in the vertical direction) and a laminate (a plate in the horizontal direction), however, the eccentric connecting piece has a large number of parts and is complex to install.
There is a need for improvement.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide an expansion connecting piece which has a simple structure and is easy to install.
In order to achieve the above object, the following technical scheme is provided:
the utility model provides an expansion connecting piece, a serial communication port, including the lift screw rod, curb plate connecting piece and expansion sleeve, expansion sleeve is inside hollow tubular structure, be equipped with expansion portion and regulation portion in proper order along expansion sleeve's axial, curb plate connecting piece one end is equipped with the connecting rod, its relative other end is equipped with the nut, the lift screw rod includes the screw rod and connects the head at screw rod one end, curb plate connecting piece passes through nut and screw threaded connection, curb plate connecting piece and lift screw set up inside expansion sleeve, the nut sets up in expansion portion, thereby nut and expansion portion slide relatively along the axial and make expansion portion expand or shrink reset, the regulation portion is equipped with the accommodation chamber that is used for holding lift screw's head, be equipped with radial regulation hole on the lateral wall of regulation portion, the accommodation chamber is linked together with the regulation hole, be equipped with the teeth of a tooth along axial extension on the terminal surface of lift screw's the head, the circumference uniform interval setting of teeth along the head, form the tooth's socket between two adjacent teeth.
Preferably, the expansion sleeve comprises two involutory first bodies and two involutory second bodies, at least one positioning hole is arranged on the first bodies, positioning columns matched with the positioning holes are arranged on the second bodies, and the positioning columns are embedded into the positioning holes to enable the first bodies and the second bodies to be connected into a whole.
Preferably, the outer side wall of the expansion sleeve is also provided with a positioning plate.
Preferably, a limiting hole is formed in the middle of the positioning plate.
Preferably, the expansion part is provided with at least one expansion block capable of expanding outwards, one end of the expansion block is connected with the side wall of the expansion part, the opposite end is separated from the side wall of the first expansion part, and the expansion block extends along the axial direction of the expansion sleeve.
Preferably, the outer wall of the expansion block is provided with lines for increasing the surface friction force.
Preferably, the outer surface of the nut is provided with a pushing part for expanding the expansion part, the pushing part is provided with a pushing surface, and the shape of the inner hole of the expansion part is matched with the shape of the pushing surface.
Preferably, the pushing surface comprises a cylindrical surface and a conical surface with a gradually-enlarged diameter, the cylindrical surface is connected with one end of the conical surface with a largest diameter, the inner hole of the expansion part comprises a cylindrical hole and a tapered hole with a gradually-enlarged diameter, the cylindrical hole is connected with one end with a largest diameter of the tapered hole, and the outer surface of the nut and the inner wall of the expansion part slide relatively so as to expand or shrink the expansion part for resetting.
Preferably, the outer surface of the nut is also provided with a limit bar extending along the axial direction, the inner hole wall of the expansion part is provided with a limit groove matched with the limit bar, and the limit bar is embedded into the limit groove.
Preferably, the expansion connecting piece further comprises an embedded nut, the end part of the connecting rod is provided with a positioning connector, a cavity for accommodating the positioning connector is formed in the embedded nut, a front panel for clamping the positioning connector is arranged at the front end of the cavity, a positioning hole is formed in the front panel and is formed by a large hole and a small hole in a penetrating mode, the large hole can be used for the positioning connector to pass through, and the aperture of the small hole is matched with the outer diameter of the connecting rod.
By adopting the structure, compared with the prior art, the invention has the following advantages: the invention has simple structure, easy installation and repeated disassembly and assembly.
Drawings
FIG. 1 is a view showing the whole construction of an expansion joint according to embodiment 1 of the present invention;
FIG. 2 is an exploded view of the expansion joint according to embodiment 1 of the present invention;
FIG. 3 is an exploded view of an expansion sleeve and nut of an expansion joint according to embodiment 1 of the present invention;
FIG. 4 is a schematic view showing the installation of an expansion joint according to embodiment 1 of the present invention;
FIG. 5 is a schematic cross-sectional view of the expansion joint according to embodiment 1 of the present invention before and after expansion;
FIG. 6 is an exploded view of an expansion joint according to embodiment 2 of the present invention;
fig. 7 is a schematic view showing the installation of the expansion joint according to embodiment 2 of the present invention.
Detailed Description
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1 to 5, the expansion joint provided by the invention comprises a lifting screw 2, a side plate joint 7 and an expansion sleeve 1, wherein the expansion sleeve 1 is of a hollow cylinder structure, an expansion part 12 and an adjusting part 13 are sequentially arranged along the axial direction of the expansion sleeve 1, one end of the side plate joint 7 is provided with a connecting rod 71 used for being connected with the side plate 01, the other end opposite to the connecting rod is provided with a nut 3, the lifting screw 2 comprises a screw 22 and a head 21 connected at one end of the screw, the screw 22 is provided with external threads, the nut 3 is provided with internal threads matched with the external threads of the screw 22, the side plate joint 7 is in threaded connection with the screw 22 through the nut 3, the side plate joint 7 and the lifting screw 2 are arranged in the expansion sleeve 1, the nut 3 is arranged in the expansion part 12, the nut 3 and the expansion part 12 slide relatively along the axial direction so as to expand or shrink the expansion part 12 for resetting, a cylindrical accommodating cavity 131 is arranged in the adjusting part 13, the head 21 of the lifting screw 2 is arranged in the accommodating cavity 131, a radial adjusting hole 130 is arranged on the side wall of the adjusting part 13, the accommodating cavity 131 is communicated with the adjusting hole 130, gear teeth 211 extending along the axial direction are arranged on the end face of the head 21 of the lifting screw, the gear teeth 211 are uniformly arranged at intervals along the circumferential direction of the head 21, tooth grooves 210 are formed between two adjacent gear teeth 211, the tooth grooves 210 are used for being meshed with the screwdriver head of the cross screwdriver, the cross screwdriver head stretches into the adjusting hole 130, and when the screwdriver is twisted, the head 21 of the screw rotates along with the cross screwdriver head, namely, the longitudinal rotation of the cross screwdriver head is converted into the transverse rotation of the lifting screw 2. The lifting screw 2 rotates to move the first nut 3 and the second nut 4 toward the head 21 of the lifting screw, and the expansion portion 12 expands radially by the nut 3.
The expansion sleeve 1 comprises two involutory first bodies 1a and second bodies 1b, at least one positioning hole 16 is formed in each first body 1a, positioning columns 15 matched with the positioning holes are arranged on each second body 1b, and the positioning columns 15 are embedded into the positioning holes 16 to enable the first bodies 1a and the second bodies 1b to be connected into a whole.
The outer side wall of the expansion sleeve 1 is also provided with a positioning plate 17, and when the expansion connecting piece is inserted into the mounting hole of the laminate 02, the positioning plate 17 is matched with a positioning groove 010 at the front end of the mounting hole of the laminate 02, so that the expansion sleeve 1 of the expansion connecting piece is prevented from deflecting. The locating plate 17 is semicircular, and a limiting hole 170 is formed in the middle of the locating plate 17. The limiting holes 170 may be engaged with screws to lock the expansion joint to the ply 02.
The expansion part 12 is provided with at least one expansion block 121 which can be expanded outwards, one end of the expansion block 121 being connected to the side wall of the expansion part 12, the opposite end being separated from the side wall of the expansion part 12, the expansion block 121 extending in the axial direction of the expansion casing 1. In the present embodiment, the number of expansion blocks 121 is 4. The outer wall of the expansion block 121 is provided with a grain for increasing the surface friction force to increase the friction force.
The outer surface of the nut 3 is provided with an annular pushing part for expanding the expansion part, the pushing part is provided with a pushing surface 31, and the shape of an inner hole of the expansion part 12 is matched with the shape of the pushing surface 31.
The pushing surface 31 comprises a cylindrical surface 312 and a conical surface 311 with a gradually enlarged diameter, the cylindrical surface 311 is connected with one end with the largest diameter of the conical surface 311, the inner hole of the expansion part 12 comprises a cylindrical hole 1202 and a conical hole 1201 with the gradually enlarged diameter, the cylindrical hole 1102 is connected with one end with the largest diameter of the conical hole 1101, and the outer surface of the nut 3 slides relative to the inner wall of the expansion part 12 so as to expand or shrink the expansion part 12 for resetting.
The shape of the pushing surface 31 may be a circular arc surface or other suitable shape, in addition to the combination of a cylindrical surface and a conical surface as in the present embodiment.
The outer surface of the nut 3 is also provided with a limiting bar 313 extending along the axial direction, the inner hole wall of the first expansion part is provided with a limiting groove 1203 matched with the limiting bar 313, the limiting bar 313 is embedded into the limiting groove 1203, and the limiting bar 313 can prevent the nut 3 and the expansion sleeve 1 from radial deflection.
The assembly method of the expansion joint is as follows:
the nut 3 of the side plate connecting piece 7 is sleeved on the lifting screw 2, the connected side plate connecting piece 7 and the lifting screw 2 are placed into an inner hole of the first body 1a (or the second body 1 b) of the expansion sleeve, the second body 1b is aligned and spliced with the first body 1a, the positioning column 15 is embedded into the positioning hole 16, and the end part of the positioning column 15 is upset to form a nail head by utilizing a riveting machine, so that the first body 1a and the second body 1b are riveted into a whole.
The using method of the expansion connecting piece comprises the following steps:
(1) Corresponding mounting holes are respectively processed on a furniture side plate (plate in the vertical direction) 01 and a furniture layer plate (plate in the horizontal direction) 02;
(2) The adjusting part 13 of the expansion connecting piece is inserted into the mounting hole of the laminate 02, the positioning plate 17 is embedded into the positioning groove 010 at the front end of the mounting hole of the laminate 02, the cross screwdriver head of the screwdriver is inserted from the adjusting hole 130 by using the screwdriver, the cross screwdriver head of the screwdriver is screwed to drive the lifting screw 2 to rotate, the nut 3 moves far away from the head 21 of the lifting screw by the rotation of the lifting screw 2, the expansion part 12 radially expands under the action of the nut 3, the free end of the expansion block 121 expands outwards, the expansion connecting piece is locked in the mounting hole of the laminate 02, the connecting rod 71 at the end, connected with the side plate 01, of the side plate connecting piece 7 is inserted in the mounting hole on the side plate 01, and the laminate 02 is hung on the side plate 01.
When the lifting screw 2 rotates reversely, the nut 3 moves towards the head 21 of the lifting screw, so that the expansion part 12 is contracted and reset, and the expansion connecting piece and the laminate 02 can be repeatedly assembled and disassembled.
The beneficial effects of the invention are as follows: the expansion connecting piece is of an integrated structure, when the expansion connecting piece is installed, the screwdriver of the cross screwdriver is used for extending into the installation hole of the laminate, the expansion connecting piece and the laminate 02 can be locked by twisting the cross screwdriver, the installation is convenient and quick, and the furniture is firmly and reliably spliced; the expansion connecting piece is hidden in the side plate and the laminate, the furniture is spliced and attractive, and the expansion connecting piece can be repeatedly disassembled and assembled.
Referring to fig. 6 to 7, the main structure, principle and efficacy of the expansion joint provided in this embodiment are the same as those of the first embodiment, and are not described in detail herein, and the expansion joint further includes a pre-buried nut 8, a positioning joint 72 is disposed at an end of the connecting rod 71 of the side plate joint 7 for connecting with the side plate 01, a cavity 80 for accommodating the positioning joint is disposed inside the pre-buried nut 8, a front panel 81 for clamping the positioning joint is disposed at a front end of the cavity 80, a positioning hole is disposed on the front panel 81, the positioning hole is formed by a large hole 812 and a small hole 811, the large hole 812 allows the positioning joint 72 to pass through, the aperture of the small hole 811 is adapted to the outer diameter of the connecting rod 71, the positioning joint 72 extends into the cavity 80 during installation, and the connecting rod 71 moves from the large hole 812 to the small hole 811 to fix the positioning joint 72 at the front panel 81 of the pre-buried nut 8. The cooperation of the embedded nut 8 and the positioning connector 72 can increase the stability of the laminate 02 and the laminate 01.
The using method of the expansion connecting piece of the embodiment is as follows:
(1) Corresponding mounting holes are respectively processed on a furniture side plate (plate in the vertical direction) 01 and a furniture layer plate (plate in the horizontal direction) 02;
(2) The adjusting part 13 of the expansion connecting piece is inserted into the mounting hole of the laminate 02, the positioning plate 17 is embedded into the positioning groove 010 at the front end of the mounting hole of the laminate 02, the cross screwdriver head of the screwdriver is inserted from the adjusting hole 130 by using the screwdriver, the cross screwdriver head of the screwdriver is screwed to drive the lifting screw 2 to rotate, the nut 3 moves far away from the head 21 of the lifting screw by the rotation of the lifting screw 2, the expansion part 12 radially expands under the action of the nut 3, the free end of the expansion block 121 expands outwards, the expansion connecting piece is locked in the mounting hole of the laminate 02, the embedded nut is placed into the mounting hole of the side plate 01, the positioning connector 72 is inserted into the large hole on the embedded nut 8 in an aligned mode, the positioning connector 72 penetrates through the large hole 812 to extend into the cavity 80, and the connecting rod 71 moves from the large hole 812 to the small hole 811 to enable the positioning connector 72 to be fixed at the front panel 81 of the embedded nut 8, and the laminate 02 is hung on the side plate 01.
When the lifting screw 2 rotates reversely, the first nut 3 and the second nut 4 move towards the head 21 of the lifting screw, the first expansion part 11 and the second expansion part 12 shrink and reset, and the expansion connecting piece and the laminate 02 can be repeatedly assembled and disassembled.
The foregoing is merely exemplary of the present invention, and those skilled in the art should not be considered as limiting the invention, since modifications may be made in the specific embodiments and application scope of the invention in light of the teachings of the present invention.
Claims (7)
1. The expansion connecting piece is characterized by comprising a lifting screw, a side plate connecting piece and an expansion sleeve, wherein the expansion sleeve is of a hollow cylinder structure, an expansion part and an adjusting part are sequentially arranged along the axial direction of the expansion sleeve, one end of the side plate connecting piece is provided with a connecting rod, the opposite end of the side plate connecting piece is provided with a nut, the lifting screw comprises a screw and a head part connected with one end of the screw, the side plate connecting piece is in threaded connection with the screw through the nut, the side plate connecting piece and the lifting screw are arranged in the expansion sleeve, the nut is arranged in the expansion part, the nut and the expansion part slide relatively along the axial direction so as to enable the expansion part to expand or shrink and reset, the adjusting part is provided with a containing cavity for containing the head part of the lifting screw, the side wall of the adjusting part is provided with radial adjusting holes, the containing cavity is communicated with the adjusting holes, gear teeth extending along the axial direction are arranged on the end face of the head part of the lifting screw, the gear teeth are uniformly arranged at intervals along the circumferential direction of the head part, tooth grooves are formed between two adjacent gear teeth,
the expansion sleeve comprises a first body and a second body which are in involution, at least one positioning hole is arranged on the first body, a positioning column matched with the positioning hole is arranged on the second body, the positioning column is embedded into the positioning hole to enable the first body and the second body to be connected into a whole,
the expansion part is provided with at least one expansion block capable of expanding outwards, one end of the expansion block is connected with the side wall of the expansion part, the opposite end of the expansion block is separated from the side wall of the first expansion part, the expansion block extends along the axial direction of the expansion sleeve,
the outer surface of the nut is provided with a pushing part for expanding the expansion part, the pushing part is provided with a pushing surface, and the shape of an inner hole of the expansion part is matched with the shape of the pushing surface.
2. The expansion joint of claim 1, wherein the outer sidewall of the expansion sleeve is further provided with a locating plate.
3. The expansion joint of claim 2, wherein the locating plate has a central limiting aperture.
4. The expansion joint according to claim 1, wherein the outer wall of the expansion block is provided with a texture for increasing the surface friction.
5. The expansion joint according to claim 1, wherein the pushing surface comprises a cylindrical surface and a conical surface with a diameter gradually increasing, the cylindrical surface is connected with one end of the conical surface with a largest diameter, the inner hole of the expansion part comprises a cylindrical hole and a conical hole with a diameter gradually increasing, the cylindrical hole is connected with one end with a largest diameter of the conical hole, and the outer surface of the nut slides relative to the inner wall of the expansion part so as to expand or shrink the expansion part for resetting.
6. The expansion joint according to any one of claims 1 to 4, wherein the outer surface of the nut is further provided with a limiting strip extending along the axial direction, the inner hole wall of the expansion part is provided with a limiting groove matched with the limiting strip, and the limiting strip is embedded into the limiting groove.
7. The expansion joint according to any of claims 1-4, wherein the expansion joint
The piece also comprises a pre-buried nut, the end part of the connecting rod is provided with a positioning connector, and the inside of the pre-buried nut is provided with a positioning connector
The cavity of joint, the front end of cavity is equipped with the front panel that is used for blocking the location connector, is equipped with a locating hole on the front panel, and this locating hole is link up by macropore and aperture and is constituteed, and the macropore can supply the location connector to pass through, and the aperture of aperture suits with the external diameter of connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910534170.0A CN110145522B (en) | 2019-06-19 | 2019-06-19 | Expansion connecting piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910534170.0A CN110145522B (en) | 2019-06-19 | 2019-06-19 | Expansion connecting piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110145522A CN110145522A (en) | 2019-08-20 |
| CN110145522B true CN110145522B (en) | 2024-04-02 |
Family
ID=67595819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910534170.0A Active CN110145522B (en) | 2019-06-19 | 2019-06-19 | Expansion connecting piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110145522B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513371A (en) * | 2019-09-12 | 2019-11-29 | 广州花都区乐思富科技有限公司 | A kind of expansion connector |
| CN110701157A (en) * | 2019-11-05 | 2020-01-17 | 广州市全居优品智能科技有限公司 | Anti-rotation connecting structure for plate connection, combined plate and production method |
| CN115419643B (en) * | 2022-10-26 | 2023-06-09 | 广东图特精密五金科技股份有限公司 | Connecting piece and laminate connecting structure |
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| CN110145522A (en) | 2019-08-20 |
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