CN2171719Y

CN2171719Y - Quick dismounting eccentric fixed bolt

Info

Publication number: CN2171719Y
Application number: CN 93220589
Authority: CN
Inventors: 陈振兴
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-08-07
Filing date: 1993-08-07
Publication date: 1994-07-13
Anticipated expiration: 2003-08-07

Abstract

The utility model relates to a quick mounting and dismounting eccentric fixed bolt. An eccentric rod of the utility model is provided with a threaded part of large diameter; one end of the eccentric rod is provided with a minor non-orbicular screw head for a nut passing through so that the screw head can be fixedly screwed on the threaded part; the other end is a circular rod, and the tail end is provided with an eccentric conical head. An eccentric sleeve is provided with a circular groove, and the upper end is provided with an open slot so that the circular rod can be arranged in the circular groove. When the utility model is arranged in a circular hole on a wall, the eccentric rod is rotated so that the eccentric conical head cuts the periphery of the inner edge of the circular hole in a rotary mode, and then a nut cap is tightly screwed so that the eccentric rod can not drop and forms firm and impervious joint. When not used, the utility model is easy of being disassembled. One end of the eccentric rod is provided with an internal thread hole which can be provided with a bolt, and the eccentric rod can rotate by a tool.

Description

Quick dismounting eccentric fixed bolt

The utility model relates to the eccentric fixed bolt of a kind of quick loading and unloading, belongs to the technical field of fastening piece.

EXPANSION ANCHOR BOLTS commonly used at present all is the bolt that is embedded at as in the circular hole of concrete one class wall, rely on the turn of bolt, force the circular hole inside of expansion sleeve inflating clip built in wall, this bolt squeeze into rotation fixing after, be difficult in the circular hole of wall, taking out again, and the structure of this EXPANSION ANCHOR BOLTS is comparatively complicated, and can't carries out demolition, so that continue to reuse, therefore demand urgently improving.

The purpose of this utility model is to provide a kind of quick loading and unloading eccentric fixed bolt, and it can overcome above-mentioned shortcoming, can take out in circular hole easily when not using, and is reusable.

The purpose of this utility model is achieved in that eccentric rod has the helical thread portion in big footpath, one end has non-circular cap head, nut can be twisted solid on screw thread by this cap head, the cap head has interior threaded hole, can be screwed into a bolt, utilizes this bolt or non-circular cap head, but tool using rotates eccentric rod, the eccentric rod the other end is a circular pin, and end is eccentric conehead, forms sharp-pointed angular shape, other has an eccentric adjusting sleeve, have eccentric circular groove, upper end open becomes opening slot, makes the circular pin of eccentric rod can be seated in the circular groove, on wall, hole, put into the assemblying body of the circular pin of eccentric adjusting sleeve and eccentric rod in the hole, rotate eccentric rod, the eccentric conehead of eccentric rod can be stretched on the wall in the circular hole inner edge with instrument, fastening nut again, make the unlikely avalanche of eccentric rod, in conjunction with firm, the time spent can not unloaded eccentric rod and eccentric adjusting sleeve easily yet, eccentric rod also can be a hollow stem, end is the hook or the spiral hook of non-pan head shape, can firmly fix equally, loads and unloads easy.

Fig. 1 is the schematic representation of eccentric fixed bolt.

Fig. 2 is that eccentric fixed bolt places the sectional view in the hole.

Fig. 3 is the A-A sectional view of Fig. 2.

Fig. 4 is the fixing schematic representation of eccentric fixed bolt.

Fig. 5 is the B-B sectional view of Fig. 4.

Fig. 6 is the fixing schematic representation of eccentric fixed bolt.

Fig. 7 is the fixing schematic representation (second kind of structure) of eccentric fixed bolt.

Fig. 8 is the sectional view of Fig. 7.

Fig. 9 is the fixing schematic representation (the third structure) of eccentric fixed bolt.

Now in conjunction with the accompanying drawings the structure of the eccentric fixed bolt of quick loading and unloading is described in detail.

By Fig. 1, eccentric fixed bolt is mainly by eccentric rod 1 eccentric adjusting sleeve 2, nut 3 parts such as grade constitute, eccentric rod 1 has the helical thread portion than the great circle footpath, one end has the non-just round cap head 11 than path, this cap head 11 can make nut 3 pass through, and be fixed on above the helical thread portion of eccentric rod 1, and this cap head can be square, hexagon or other Any shape, as long as spanner class instrument easy to use rotates eccentric rod 1 and just can be suitable for, and interior threaded hole 12 can be set at an end of cap head 11, can match rotatable in case of necessity bolt 4 and eccentric rod 1 is rotated with bolt 4.Packing ring 31 is to place between wall and the nut 3; The other end of eccentric rod 1 is the circular pin 13 that diameter is slightly less than helical thread portion, end at circular pin 13 is the conehead 14 of an off-centre, its circle footpath is greater than the circle footpath of circular pin 13, and approximately identical size, size are arranged with the aperture, hole that drill bit is drilled to, this off-centre conehead 14 forms an off-centre, and become to protrude in a side of eccentric rod 1, its projection has sharp keen angular shape.

Eccentric adjusting sleeve 2 is that an external diameter becomes orbicular round bar, and has eccentric circular groove 21 in the bar, the upper end of groove is cut open and is become an opening slot circular pin 13 of eccentric rod 1 just in time can be inserted in the groove identically, and the external diameter of eccentric adjusting sleeve 2 is also just in time consistent with the aperture in the hole of being bored.

Fig. 2 is that eccentric fixed bolt places the sectional view in the hole.

Fig. 3 is the A-A sectional view of Fig. 2.

On wall, hole earlier, the aperture is suitable with eccentric bushing 2, and the circular pin 13 of eccentric rod 1 is placed in the eccentric circular groove 21 of eccentric bushing 2, just in time forms a positive toroidal, again eccentric bushing 2, eccentric rod 1 are placed in the hole, but the eccentric conehead 14 of circular pin 13 ends still is positioned at the hole.

Fig. 4 is the fixing schematic representation of eccentric fixed bolt.

Fig. 5 is the B-B sectional view of accompanying drawing 4.

By Fig. 2,3 represented situations, use spanner class instrument to rotate the spiral shell head 11 of eccentric rod 1, make about 180 ° of eccentric rod 1 rotation, at this moment the eccentric conehead 14 of eccentric rod 1 becomes all sides of sharp keen rotary-cut circular hole inner edge, become and deeply be fastened on wall circular hole inner edge side, at this moment load onto packing ring 31, the nut 3 of screwing on, eccentric rod 1 is attached in the circular hole more securely, and unlikely bursting apart comes off.

When eccentric rod 1 is made reverse rotation, the eccentric conehead 14 of eccentric rod 1 is rotary reset in cinclides just, conceal into Cheng Zhengyuan in eccentric adjusting sleeve 2, at this moment this eccentric rod 1 becomes and the same diameter of circular hole with eccentric adjusting sleeve 2 again, so eccentric rod 1 and eccentric adjusting sleeve 2 can take out from circular hole easily.

Fig. 6 is the fixing schematic representation of eccentric fixed bolt.

Bolt 4 is twisted solid in the interior threaded hole 12 of spiral shell head 11, uses spanner class instrument rotating bolt 4, just rotatable eccentric rod 1, and perhaps Passscheiben 31 can be fixed in fixation indirectly.

Fig. 7 is the schematic representation (second kind of structure) of eccentric fixed bolt.

Fig. 8 is the sectional view of accompanying drawing 7.

Eccentric rod 22 is hollow tubulars 15, it is fixing to plant for shaft in the pipe, eccentric rod 22 still has a circular pin 13 parts, the end of circular pin 13 is hooks 16 of non-pan head shape, the other end has male thread portion, one side has a smooth no screw thread flat section 24, and eccentric adjusting sleeve 2 has the circular groove 21 of an off-centre, but the top of groove not opening become opening slot.

Eccentric rod 22 is contained in the eccentric adjusting sleeve 23, in the circular hole that together is contained on the wall again to be bored, use spanner class instrument, rotate eccentric rod 22 at no screw thread flat section 24, make hook 16 stretch out wall circular hole inner edge, be anchored on above the helical thread portion 23 of eccentric rod 22 with nut 3 again, make fixed bolt be attached in the hole unlikely avalanche securely.

Fig. 9 is the schematic representation (the third structure) of eccentric fixed bolt.

The end of eccentric rod 25 is made has spiral hook 17, can charge in the wall circular hole inner edge as above-mentioned hook 16 or eccentric conehead 14.

Compared with prior art, the structure of Quick dismounting eccentric fixed bolt has following advantages:

1. simple in structure, use reliable.

2. can realize quick fixed installation, the time spent can not take out easily.

Claims

1, the eccentric fixed bolt of a kind of quick loading and unloading, it is characterized in that eccentric fixed bolt is mainly by eccentric rod (1), eccentric adjusting sleeve (2), nut (3) is formed, eccentric rod (1) has the helical thread portion than the great circle footpath, one end have non-circular cap head (11), the other end of eccentric rod (1) is circular pin (13), end has eccentric conehead (14), its circle footpath is greater than circular pin (13), eccentric conehead (14) becomes eccentric and protrudes in eccentric rod (1) one side, projection forms sharp keen pointed shape, eccentric adjusting sleeve (2) is an orbicular round bar, eccentric circular groove (21) is arranged in the bar, the upper end of groove is cut open becomes an opening slot, and circular pin (13) part of eccentric rod (1) is contained in the eccentric circular groove (21), loads onto packing ring (31) and nut (3).

2, fixed bolt according to claim 1 is characterized in that: an end of cap head (11) has interior threaded hole (12), can match with bolt (13).

3, fixed bolt according to claim 1 is characterized in that: eccentric rod (23) is a hollow tubular (15), and rod end is hook (16) or spiral hook (17).