CN109356922A - A kind of blind bolt - Google Patents
A kind of blind bolt Download PDFInfo
- Publication number
- CN109356922A CN109356922A CN201811505421.4A CN201811505421A CN109356922A CN 109356922 A CN109356922 A CN 109356922A CN 201811505421 A CN201811505421 A CN 201811505421A CN 109356922 A CN109356922 A CN 109356922A
- Authority
- CN
- China
- Prior art keywords
- hole
- control
- expansion
- expansion piece
- piece
- Prior art date
- 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.)
- Pending
Links
- 230000008961 swelling Effects 0.000 claims description 6
- 230000004323 axial length Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
-
- 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
Abstract
The invention discloses a kind of blind bolts, which is characterized in that including screw rod, expansion piece, control piece and spring；The screw flight end is provided with through-hole I on end face；Blind hole I is provided in the other end face of the screw rod；Expansion hole I and expansion hole II are provided on the other end cylinder of the screw rod；Expansion piece I is installed in the expansion hole I；Card slot I is provided at the bottom center position of the expansion piece I；Expansion piece II is installed in the expansion hole II；Card slot II is provided at the end face center position of the expansion piece II；Several springs are connected between the bottom surface of the expansion piece I and the top surface of expansion piece II；The control piece includes connected control head and control-rod；The control-rod is located in through-hole I；The control head is the structure that both ends are equipped with apex angle；The state of the control of control head the expansion piece I and expansion piece II.
Description
Technical field
The present invention relates to machine component field, specifically a kind of blind bolt.
Background technique
Blind bolt also known as blind hole bolt or single side clamping screw, may be implemented unilateral installation, function is tightened in unilateral side, non-
Often it is suitable for the connection of steel-tube construction, has the characteristics that site operation is simple and convenient, welding capacity is minimum, quality of connection is guaranteed.
Meanwhile blind bolt has high-strength shear-carrying capacity, tensile bearing capacity and pretightning force, its mechanics under certain condition
Performance can accomplish to compare favourably with traditional high-strength bolt, be highly suitable for the connection of steel-tube construction.
But current blind bolt has anchorage effect not strong, and degree easy for installation need the problems such as being improved.
Summary of the invention
Present invention aim to address problems of the prior art, provide a kind of blind bolt.
To realize the present invention purpose and the technical solution adopted is that a kind of such, blind bolt, which is characterized in that including
Screw rod, expansion piece, control piece and spring.
The screw rod is that one end sets threaded rod-like structure.
The screw flight end is provided with through-hole I on end face.
Blind hole I is provided in the other end face of the screw rod.
Expansion hole I and expansion hole II are provided on the other end cylinder of the screw rod.
Central axis, the central axis of blind hole I and the central axis of screw rod of the through-hole I is located on the same line.
The expansion hole I and expansion hole constitute through-hole structure.The central axis of the through-hole structure and pass through screw rod
Central axis.
Expansion piece I is installed in the expansion hole I.
From the angle of processing, the expansion piece I is formed after arcwall face is processed into the top surface of rectangular parallelepiped structure
Structure.The cylindrical shape of the arcwall face and screw rod is mutually agreed with.
Card slot I is provided at the bottom center position of the expansion piece I.
Expansion piece II is installed in the expansion hole II.
From the angle of processing, the expansion piece II is formed after arcwall face is processed into the bottom surface of rectangular parallelepiped structure
Structure.The cylindrical shape of the arcwall face and screw rod is mutually agreed with.
Card slot II is provided at the end face center position of the expansion piece II.
Several springs are connected between the bottom surface of the expansion piece I and the top surface of expansion piece II.
The control piece includes connected control head and control-rod.
The control-rod is located in through-hole I.The diameter of the control-rod and the internal diameter of through-hole I mutually agree with.The control-rod
Axial length be greater than through-hole I depth.
The control head is the structure that both ends are equipped with apex angle.What the control head was located at that expansion hole I and expansion hole constitute leads to
In pore structure.
The control head is rotated with the rotation of control-rod.
The state of the control of control head the expansion piece I and expansion piece II.
When two apex angles for controlling head are stuck in card slot I and card slot II, the spring is in tensional state, described
Expansion piece I and expansion piece II is in swelling state.
When two apex angles for controlling head are located at the position except card slot, the spring restPoses, the expansion
Part I and expansion piece II is in original state.
Further, the quantity of the spring is four.Every two springs are located at the end face side of control head.
Further, the blind hole I is rectangular shape hole, and the length in the section of the blind hole I is X, and the blind hole I's cuts
Face width direction is the direction where card slot.
Further, the section of the control head is the oval cusp-shaped structure that two symmetrical camber lines are constituted.
The length of line between two apex angles of the control head is A.A≤X.
Further, control rotary table is connected between control head and the control-rod；
Minimum diameter of the diameter of the control rotary table no more than control head；
The diameter of the control rotary table is greater than the diameter of through-hole I；
The control rotary table makes to control head between several springs.
The solution have the advantages that unquestionable, the invention has the following advantages that
1) construction and installation of the present invention are easy, simple process；
2) expansion piece in the present invention is greatly improved the anchorage effect of one-way bolt.
Detailed description of the invention
Fig. 1 is the original state structural schematic diagram of blind bolt；
Fig. 2 is the original state structural schematic diagram of blind bolt；
Fig. 3 is the original state diagrammatic cross-section of blind bolt；
Fig. 4 is the swelling state structural schematic diagram of blind bolt；
Fig. 5 is the swelling state structural schematic diagram of blind bolt；
Fig. 6 is the swelling state diagrammatic cross-section of blind bolt.
In figure: screw rod 1, through-hole I101, blind hole I102, expansion hole I103, expansion hole II104, expansion piece 2, expansion piece
I201, card slot I2011, expansion piece II202, card slot II2021, control piece 3, control head 301, control-rod 302, control rotary table 303
With spring 4.
Specific embodiment
Below with reference to embodiment, the invention will be further described, but should not be construed the above-mentioned subject area of the present invention only
It is limited to following embodiments.Without departing from the idea case in the present invention described above, according to ordinary skill knowledge and used
With means, various replacements and change are made, should all include within the scope of the present invention.
Embodiment:
A kind of blind bolt, which is characterized in that including screw rod 1, expansion piece 2, control piece 3 and spring 4.
The screw rod 1 is that one end sets threaded rod-like structure.
Through-hole I101 is provided on the end of thread end face of the screw rod 1.
Blind hole I102 is provided in the other end face of the screw rod 1.
The blind hole I102 is rectangular shape hole, and the length in the section of the blind hole I102 is X, the blind hole I102's
Cross-sectional width direction is the direction where card slot.
Expansion hole I103 and expansion hole II104 are provided on the other end cylinder of the screw rod 1.
The central axis of the central axis of the through-hole I101, the central axis of blind hole I102 and screw rod 1 is located on the same line.
The expansion hole I103 and expansion hole 104 constitute through-hole structure.It the central axis of the through-hole structure and passes through
The central axis of screw rod 1.
Expansion piece I201 is installed in the expansion hole I103.
From the angle of processing, the expansion piece I201 is that the top surface of rectangular parallelepiped structure is processed into shape after arcwall face
At structure.The cylindrical shape of the arcwall face and screw rod 1 is mutually agreed with.
Card slot I2011 is provided at the bottom center position of the expansion piece I201.
Expansion piece II202 is installed in the expansion hole II104.
From the angle of processing, the expansion piece II202 is after arcwall face is processed into the bottom surface of rectangular parallelepiped structure
The structure of formation.The cylindrical shape of the arcwall face and screw rod 1 is mutually agreed with.
Card slot II2021 is provided at the end face center position of the expansion piece II202.
Several springs 4 are connected between the bottom surface of the expansion piece I201 and the top surface of expansion piece II202.
In the present embodiment, the quantity of the spring 4 is four.Every two springs 4 are located at the end face one of control head 301
Side.
The control piece 3 includes connected control head 301 and control-rod 302.
The control-rod 302 is located in through-hole I101.The internal diameter phase contract of the diameter of the control-rod 302 and through-hole I101
It closes.The axial length of the control-rod 302 is greater than the depth of through-hole I101.
The control head 301 is the structure that both ends are equipped with apex angle.The control head 301 is located at expansion hole I103 and expansion hole
In 104 through-hole structures constituted.
In the present embodiment, the section of the control head 301 is the oval cusp-shaped structure that two symmetrical camber lines are constituted.
The length of line between two apex angles of the control head 301 is A.A≤X.
Control rotary table 303 is connected between the control head 301 and control-rod 302；
In the present embodiment, the diameter of the control rotary table 303 is equal to the minimum diameter of control head 301；
The diameter of the control rotary table 303 is greater than the diameter of through-hole I101；
The control rotary table 303, which makes to control head 301, to be located between four springs 4, guarantee control head 301 rotation when not
Bottom spring can be encountered；
The control head 301 is rotated with the rotation of control-rod 302.
The control head 301 controls the state of expansion piece I201 and expansion piece II202.
As shown in figures 4-6, when two apex angles for controlling head 301 are stuck in card slot I2011 and card slot II2021,
The spring 4 is in tensional state, and the expansion piece I201 and expansion piece II202 are in swelling state.
As shown in Figures 1 to 3, when two apex angles for controlling head 301 are located at the position except card slot, the spring 4 restores
Original state, the expansion piece I201 and expansion piece II202 are in original state.
Claims (5)
1. a kind of blind bolt, which is characterized in that including screw rod (1), expansion piece (2), control piece (3) and spring (4)；
The screw rod (1) is that one end sets threaded rod-like structure；
Through-hole I (101) are provided on the end of thread end face of the screw rod (1)；
Blind hole I (102) are provided in the other end face of the screw rod (1)；
Expansion hole I (103) and expansion hole II (104) are provided on the other end cylinder of the screw rod (1)；
The central axis of the central axis of the through-hole I (101), the central axis of blind hole I (102) and screw rod (1) is located at same straight line
On；
The expansion hole I (103) and expansion hole (104) constitute through-hole structure；It the central axis of the through-hole structure and passes through
The central axis of screw rod (1)；
Expansion piece I (201) are installed in the expansion hole I (103)；
From the angle of processing, the expansion piece I (201) is formed after arcwall face is processed into the top surface of rectangular parallelepiped structure
Structure；The cylindrical shape of the arcwall face and screw rod (1) is mutually agreed with；
Card slot I (2011) are provided at the bottom center position of the expansion piece I (201)；
Expansion piece II (202) are installed in the expansion hole II (104)；
From the angle of processing, the expansion piece II (202) is that the bottom surface of rectangular parallelepiped structure is processed into shape after arcwall face
At structure；The cylindrical shape of the arcwall face and screw rod (1) is mutually agreed with；
Card slot II (2021) are provided at the end face center position of the expansion piece II (202)；
Several springs (4) are connected between the bottom surface of the expansion piece I (201) and the top surface of expansion piece II (202)；
The control piece (3) includes connected control head (301) and control-rod (302)；
The control-rod (302) is located in through-hole I (101)；The internal diameter phase of the diameter and through-hole I (101) of the control-rod (302)
Agree with；The axial length of the control-rod (302) is greater than the depth of through-hole I (101)；
Control head (301) is the structure that both ends are equipped with apex angle；The control head (301) is located at expansion hole I (103) and expansion
In the through-hole structure that hole (104) is constituted；
Control head (301) rotates with the rotation of control-rod (302)；
The state of control head (301) control expansion piece I (201) and expansion piece II (202)；
When two apex angles for controlling head (301) are stuck in card slot I (2011) and card slot II (2021) interior, the spring (4)
In tensional state, the expansion piece I (201) and expansion piece II (202) are in swelling state；
When two apex angles for controlling head (301) are located at the position except card slot, the spring (4) restPoses, described
Expansion piece I (201) and expansion piece II (202) are in original state.
2. a kind of blind bolt according to claim 1, it is characterised in that: the quantity of the spring (4) is four；Every two
Root spring (4) is located at the end face side of control head (301).
3. a kind of blind bolt according to claim 1, it is characterised in that: the blind hole I (102) is rectangular shape
Hole, the length in the section of the blind hole I (102) are X, and the cross-sectional width direction of the blind hole I (102) is the side where card slot
To.
4. a kind of blind bolt according to claim 1 or 3, it is characterised in that: the section of control head (301) is two
The oval cusp-shaped structure that the symmetrical camber line of item is constituted；
The length of line between two apex angles of control head (301) is A；A≤X.
5. a kind of blind bolt according to claim 1, it is characterised in that: the control head (301) and control-rod (302)
Between be connected with control rotary table (303)；
Minimum diameter of the diameter of control rotary table (303) no more than control head (301)；
The diameter of control rotary table (303) is greater than the diameter of through-hole I (101)；
The control rotary table (303) makes to control head (301) between several springs (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811505421.4A CN109356922A (en) | 2018-12-10 | 2018-12-10 | A kind of blind bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811505421.4A CN109356922A (en) | 2018-12-10 | 2018-12-10 | A kind of blind bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109356922A true CN109356922A (en) | 2019-02-19 |
Family
ID=65330331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811505421.4A Pending CN109356922A (en) | 2018-12-10 | 2018-12-10 | A kind of blind bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109356922A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151429A (en) * | 2021-11-08 | 2022-03-08 | 卢伟阅 | Fixing piece |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1550681A (en) * | 2003-04-03 | 2004-12-01 | ���ٶ�����������˾ | Fastening device, particularly for holding together a stack of at least two panels |
| CN204572722U (en) * | 2015-04-21 | 2015-08-19 | 合肥工业大学 | The locking EXPANSION ANCHOR BOLTS of a kind of slide block type |
| CN205013472U (en) * | 2015-09-25 | 2016-02-03 | 重庆市九龙坡职业教育中心 | But recycle's inflation screw |
| CN105934591A (en) * | 2014-05-15 | 2016-09-07 | Fs技术公司 | Post-installed anchor, post-installed anchor implementation method, post-installed anchor system and rotation-stopping tool |
| US20170145684A1 (en) * | 2015-11-20 | 2017-05-25 | ToolTech, LLC | Concrete Slab Anchor |
| CN209705032U (en) * | 2018-12-10 | 2019-11-29 | 重庆大学 | A kind of blind bolt |
-
2018
- 2018-12-10 CN CN201811505421.4A patent/CN109356922A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1550681A (en) * | 2003-04-03 | 2004-12-01 | ���ٶ�����������˾ | Fastening device, particularly for holding together a stack of at least two panels |
| CN105934591A (en) * | 2014-05-15 | 2016-09-07 | Fs技术公司 | Post-installed anchor, post-installed anchor implementation method, post-installed anchor system and rotation-stopping tool |
| CN204572722U (en) * | 2015-04-21 | 2015-08-19 | 合肥工业大学 | The locking EXPANSION ANCHOR BOLTS of a kind of slide block type |
| CN205013472U (en) * | 2015-09-25 | 2016-02-03 | 重庆市九龙坡职业教育中心 | But recycle's inflation screw |
| US20170145684A1 (en) * | 2015-11-20 | 2017-05-25 | ToolTech, LLC | Concrete Slab Anchor |
| CN209705032U (en) * | 2018-12-10 | 2019-11-29 | 重庆大学 | A kind of blind bolt |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151429A (en) * | 2021-11-08 | 2022-03-08 | 卢伟阅 | Fixing piece |
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