CN204878231U - Car bolt assembly - Google Patents
Car bolt assembly Download PDFInfo
- Publication number
- CN204878231U CN204878231U CN201520656165.4U CN201520656165U CN204878231U CN 204878231 U CN204878231 U CN 204878231U CN 201520656165 U CN201520656165 U CN 201520656165U CN 204878231 U CN204878231 U CN 204878231U
- Authority
- CN
- China
- Prior art keywords
- nut
- stud
- locking element
- bolt assembly
- car
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a car bolt assembly aims at providing a car bolt assembly who makes things convenient for workpiece setting, the waste of reduction material and contract few cost of labor, and its technical scheme main points are: including bolt body, retaining member, the bolt body includes the nut and has the double -screw bolt of external screw thread, be equipped with on the retaining member and run through the screw hole that just supplies double -screw bolt threaded connection in the retaining member, the double -screw bolt is kept away from one of nut and is served the constriction part who is equipped with the cold -heading shaping and forms.
Description
Technical field
The utility model relates to a kind of car bolt assembly, and more particularly, it relates to and a kind ofly facilitates trade union college, reduces waste of material and reduce the car bolt assembly of cost of labor.
Background technique
Traditional bolt assembly generally includes bolt body, nut, bolt body is mainly by nut with an externally threaded stud class fastening piece dimerous, need and nut screw connection, for being fastenedly connected two parts with through hole, and common nut shape is generally hexagon, and the shape of this nut shape size that is usual and nut is close, and when being generally applied to elevator cab aspect, because the junction surface of elevator cab is comparatively large, if adopt traditional bolt assembly to carry out connection elevator cab there will be following point:
Be actually used in the wall connection procedure of car railway carriage or compartment; what usually can need bolt assembly tightens work in advance; namely on the wall of car railway carriage or compartment, penetration hole is stamped; then bolt is inserted in penetration hole; then on an opposite end nut is rotated on stud; but traditional nut is hexagon; need stud is relative with the tapped hole on nut away from one end of nut; then nut is rotated on stud; but due to the impact of machining accuracy; stud often cannot disposablely be screwed in nut, needs repeatedly to install, and installation efficiency is lower.
Model utility content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of and facilitates trade union college, reduces waste of material and reduce the car bolt assembly of cost of labor.
For achieving the above object, the utility model provides following technological scheme: a kind of car bolt assembly, comprise bolt body, locking element, described bolt body comprises nut and with externally threaded stud, described locking element is provided with through locking element and the tapped hole be threaded for stud, and described stud is provided with the contraction flow region of cold-heading molding away from one end of nut.
Preferably, the shape of described locking element is cuboid.
Preferably, described contraction flow region comprises the guide head be wholely set with stud, and the shape of described guide head is cylindrical body, and arrange in coaxial between described guide head with stud, the size of described guide head diameter is less than the size in the large footpath of stud.
Preferably, the shape of described nut is six prisms, and the length scale of described locking element is nut away from 3 times of the catercorner length on stud end face.
Preferably, the width size of described locking element equals nut away from the catercorner length size on stud end face.
Preferably, the height size of described nut is 1/2 of stud length scale.
Preferably, described tapped hole is positioned at the central position of locking element.
Compared with prior art, the beneficial effects of the utility model are: arrange contraction flow region at stud away from one end of nut, when being connected between nut, can first contraction flow region be inserted in the screw of nut, then utilize the leading role of contraction flow region, whole stud can successfully be screwed in nut, in practical operation, disposablely can complete alignment work under major part situation, facilitate trade union college; Contraction flow region adopts cold-heading molding to form, and cold-heading molding utilizes mould at normal temperatures to the forging method of metal bar material upsetting formation, effectively can reduce the waste of material, and adopts cold header to process, and can reduce artificial cost.
Accompanying drawing explanation
Fig. 1 is the mounting structure schematic diagram of a kind of car bolt assembly of the utility model embodiment;
Fig. 2 is the plan structure schematic diagram of a kind of car bolt assembly of the utility model embodiment;
Fig. 3 is the structural representation of bolt body in a kind of car bolt assembly of the utility model embodiment.
Reference character: 1, bolt body; 11, nut; 12, stud; 2, locking element; 21, tapped hole; 3, contraction flow region; 31, guide head.
Embodiment
For making the object of the utility model embodiment, technological scheme and advantage clearly, below with reference to Fig. 1 to Fig. 3 a kind of car bolt assembly of the utility model embodiment being done and describing clearly and completely further.Obviously, described embodiment is section Example of the present utility model, instead of whole embodiments.Based on described embodiment of the present utility model, the every other embodiment that those of ordinary skill in the art obtain under without the need to the prerequisite of creative work, belongs to the scope of the utility model protection.
A kind of car bolt assembly, comprise bolt body 1, locking element 2, described bolt body 1 comprises nut 11 and with externally threaded stud 12, described locking element 2 is provided with through locking element 2 and the tapped hole 21 be threaded for stud 12, described stud 12 is provided with the contraction flow region 3 of cold-heading molding away from one end of nut 11, at stud 12, contraction flow region 3 is set away from one end of nut 11, when being connected between nut, can first contraction flow region 3 be inserted in the screw of nut, then the leading role of contraction flow region 3 is utilized, whole stud 12 can successfully be screwed in nut, in practical operation, disposablely alignment work can be completed under major part situation, facilitate trade union college, contraction flow region 3 adopts cold-heading molding to form, and cold-heading molding utilizes mould at normal temperatures to the forging method of metal bar material upsetting formation, effectively can reduce the waste of material, and adopts cold header to process, and can reduce artificial cost.
First, traditional nut shape is hexagon, when nut is connected car railway carriage or compartment wall with bolt, if seek the effect of the larger power that pushes against, and the quality of car railway carriage or compartment wall is softer, easily destroy car railway carriage or compartment wall, and locking element 2 shape adopted is cuboid, effectively can increase the area of contact between this locking element 2 and car railway carriage or compartment wall, reduce the damage to car railway carriage or compartment wall;
Secondly, be actually used in the wall connection procedure of car railway carriage or compartment, what usually can need bolt assembly tightens work in advance, namely on the wall of car railway carriage or compartment, penetration hole is stamped, then bolt is inserted in penetration hole, then on an opposite end nut is rotated on stud 12, but traditional nut is hexagon, when tightening in advance, operator are needed repeatedly to twist, it is very inconvenient to install, and when tightening, operator's hand is easy to occur aching, and adopt the locking element 2 of cuboid, when bolt is inserted into after in penetration hole, operator are tapped hole 21 alignment stud 12 on locking element 2, then the periphery of locking element 2 is directly stirred, the locking element 2 of cuboid is relative to the nut of hexagon, the centrifugal force of side is larger, can very successfully rotate in stud 12, install very convenient.
Contraction flow region 3 comprises the guide head 31 be wholely set with stud 12, the shape of guide head 31 is cylindrical body, arrange in coaxial between described guide head 31 with stud 12, the size of described guide head 31 diameter is less than the size in the large footpath of stud 12, shape due to tapped hole 21 is circular, guide head 31 makes cylindrical body, other shape can not only be inserted in tapped hole 21 more easily relatively, and guide head 31 must excircle sidewall be circular arc, effectively can reduce guide head 31 when inserting, the degree of wear of the internal thread of tapped hole 21.
The shape of nut 11 is six prisms, as shown in Figure 2, the length scale b of locking element 2, nut 11 is a away from the catercorner length on stud 12 end face, wherein b=3a, this length limits, and learns through long time test, take into account cost of production and advantage easy for installation, effectively can promote centrifugal force when locking element 2 rotates around stud 12.
As shown in Figure 2, the width size of locking element 2 is c, nut 11 is a away from the catercorner length size on stud 12 end face, wherein a=c, when locking element 2 is held on wall both sides, car railway carriage or compartment with nut 11, on the width direction of locking element 2, effectively can increase the clamping force between locking element 2 and nut 11, also can reduce unnecessary spillage of material.
As shown in Figure 3, the height size of nut 11 is d, and stud 12 length scale is e, wherein d=2e, in actual rundown process, need a hand to pinch lock sheet, another hand pinches nut 11, and is tightening the later stage, rotary nut 11 is simultaneously needed to drive whole bolt to rotate, and this ratio, effectively can pinch effective holding area of nut 11 by lifting operation personnel hand, lifting operation comfort level.
Tapped hole 21 is positioned at the central position of locking element 2, thus farthest ensure the pore wall strength of tapped hole 21 periphery, after locking, there are larger vibrations even if extraneous, the structural strength of tapped hole 21 periphery also can farthest be ensured, the extruding and producing avoiding tapped hole 21 to be subject to stud 12 is broken.
The above is only exemplary embodiment of the present utility model, but not for limiting protection domain of the present utility model, protection domain of the present utility model is determined by appended claim.
Claims (7)
1. a car bolt assembly, comprise bolt body, locking element, described bolt body comprises nut and with externally threaded stud, described locking element is provided with through locking element and the tapped hole be threaded for stud, it is characterized in that: described stud is provided with the contraction flow region of cold-heading molding away from one end of nut.
2. a kind of car bolt assembly according to claim 1, is characterized in that: the shape of described locking element is cuboid.
3. a kind of car bolt assembly according to claim 1, it is characterized in that: described contraction flow region comprises the guide head be wholely set with stud, the shape of described guide head is cylindrical body, arrange in coaxial between described guide head with stud, the size of described guide head diameter is less than the size in the large footpath of stud.
4. a kind of car bolt assembly according to claim 2, is characterized in that: the shape of described nut is six prisms, and the length scale of described locking element is nut away from 3 times of the catercorner length on stud end face.
5. a kind of car bolt assembly according to claim 2 or 4, is characterized in that: the width size of described locking element equals nut away from the catercorner length size on stud end face.
6. a kind of car bolt assembly according to claim 4, is characterized in that: the height size of described nut is 1/2 of stud length scale.
7. a kind of car bolt assembly according to claim 1, is characterized in that: described tapped hole is positioned at the central position of locking element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520656165.4U CN204878231U (en) | 2015-08-27 | 2015-08-27 | Car bolt assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520656165.4U CN204878231U (en) | 2015-08-27 | 2015-08-27 | Car bolt assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204878231U true CN204878231U (en) | 2015-12-16 |
Family
ID=54822607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520656165.4U Expired - Fee Related CN204878231U (en) | 2015-08-27 | 2015-08-27 | Car bolt assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204878231U (en) |
-
2015
- 2015-08-27 CN CN201520656165.4U patent/CN204878231U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20170827 |