CN208919008U - Permanent torque bolt - Google Patents
Permanent torque bolt Download PDFInfo
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- CN208919008U CN208919008U CN201821372230.0U CN201821372230U CN208919008U CN 208919008 U CN208919008 U CN 208919008U CN 201821372230 U CN201821372230 U CN 201821372230U CN 208919008 U CN208919008 U CN 208919008U
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Abstract
The utility model relates to electric power tool fields, specifically permanent torque bolt, including bolt, one end of bolt is successively arranged the first bolt head and the second bolt head along axial direction, fracture is equipped between first bolt head and the second bolt head, the peak torque that fracture is able to bear is less than the peak torque that bolt other parts are able to bear, and when the torque that the first bolt head is born is greater than the peak torque that fracture is able to bear, fracture can be broken to be detached from the first bolt head from bolt.The beneficial effects of the utility model are: setting fracture and two bolt heads, it can according to need the maximum receiving torque for being pre-designed fracture, when to make to screw permanent torque bolt, fracture is broken when reaching maximum receiving torque and is detached from the first bolt head, will not because screw torque it is excessive due to damage cable or thread clamping mechanism by pressure, bolt can be unscrewed by the second bolt head counter force when needing demounting bolt again, avoid bolt that from can not dismantling and cause maintenance inconvenient.
Description
Technical field
The utility model relates to electric power tool field, specifically permanent torque bolt.
Background technique
In electric power tool field, for electric power tool being fixedly mounted on cable to be grounded to cable, electrical verification
Cable is pressed against thread clamping mechanism ontology usually using the bolt of cooperation thread clamping mechanism ontology by the thread clamping mechanism of equal inspection operations
On, to realize the fixation of thread clamping mechanism and cable.But current electric power tool bolt usually can when tightening
Cable or thread clamping mechanism are damaged by pressure because screw-down torque is excessive, although there are also permanent torque wrenches at present, can be preset stubborn
The peak torque of tight bolt, to solve the above problems, but that structure is complicated is expensive.
Utility model content
To solve the above-mentioned problems, the task of the utility model is to provide permanent torque bolt.
The utility model task is achieved through the following technical solutions:
One end of permanent torque bolt, including bolt, the bolt is successively arranged the first bolt head and the second bolt along axial direction
Head, is equipped with fracture between the first bolt head and the second bolt head, the peak torque that the fracture is able to bear is less than bolt
The peak torque that other parts are able to bear, when the torque that the first bolt head is born is greater than the peak torque that fracture is able to bear
When, fracture can be broken to be detached from the first bolt head from bolt.
It is preferred that the structure of the fracture is that the annular groove of the bolt outer surface is arranged in and/or is arranged in bolt
Internal inner hole.
It is preferred that the other end of the bolt is equipped with anti-skidding pressing plate, the back side of anti-skidding pressing plate and bolt end be can be rotated
Connection, and bolt and the surface that anti-skidding pressing plate fits be respectively equipped with can intermeshing first non-return helical teeth circle and second stop
Inverse helical teeth circle, the first non-return helical teeth circle and the second non-return helical teeth circle are enclosed by the several first non-return helical teeth and the second non-return helical teeth respectively
It closes, the first non-return helical teeth screws contrary direction inclination, the direction of the second non-return helical teeth and first towards with bolt
The direction of non-return helical teeth is on the contrary, to limit the relatively anti-skidding pressing plate counter-rotating of bolt, the front of anti-skidding pressing plate is for pressing
The top splenium of object, it is opposite by press object counter-rotating to limit anti-skidding pressing plate that the top splenium is equipped with anti-skid structure.
It is preferred that the anti-skid structure is the non-return helical teeth of third being arranged in the top splenium, the court of the non-return helical teeth of third
To with the first non-return helical teeth towards identical, so that it is opposite by press object counter-rotating to limit anti-skidding pressing plate.
It is preferred that the anti-skid structure is the straight groove structure being arranged in the top splenium, top splenium passes through straight groove structure card
It is rotated embedded in by the outer surface of press object so as to limit anti-skidding pressing plate counterbody.
It is preferred that the mode that the back side of the anti-skidding pressing plate and the front end of the bolt are rotatably connected are as follows: the spiral shell
The front end of bolt is equipped with fixing axle, and the anti-skidding pressing plate is equipped with corresponding through-hole, and the fixing axle and through-hole are each passed through described
The center of first non-return helical teeth circle and the second non-return helical teeth circle, anti-skidding pressing plate is covered in the fixing axle of bolt by through-hole and energy phase
To rotation, the end of fixing axle is additionally provided with the shaft-cup for being detached from fixing axle for limiting anti-skidding pressing plate.
The beneficial effects of the utility model are: fracture and two bolt heads are 1. arranged, it can according to need and be pre-designed
The maximum of fracture bears torque, so that fracture is broken when reaching maximum receiving torque when making to screw permanent torque bolt
And be detached from the first bolt head, will not because screw torque it is excessive due to damage cable or thread clamping mechanism by pressure, and can need to dismantle
When bolt, bolt can be unscrewed by the second bolt head counter force, avoid bolt that from can not dismantling and cause maintenance inconvenient；2. leading to
It crosses the front end in bolt to be rotatably connected anti-skidding pressing plate, the surface that bolt fits with anti-skidding pressing plate, which is respectively equipped with, mutually to nibble
The the first non-return helical teeth and the second non-return helical teeth closed, the first non-return helical teeth screw contrary direction inclination towards with bolt,
The direction of second non-return helical teeth with the direction of the first non-return helical teeth on the contrary, to limit the opposite anti-skidding pressing plate counter-rotating of bolt,
In use, positive screwing bolts, bolt press cable with anti-skidding pressing plate, positive screwing bolts are then proceeded to, bolt is relatively anti-
Sliding pressure plate rotates forward and Anti-slip regulation pressing plate holds out against cable on the quiet collet of thread clamping mechanism ontology, just due to anti-skidding pressing plate
Face is equipped with anti-skid structure and limits anti-skidding pressing plate with respect to cable counter-rotating, passes through the second non-return helical teeth and the first non-return helical teeth
Engagement, and then prevent bolt from relatively anti-skidding pressing plate counter-rotating, even if to guarantee to be bolted the time relatively long and in oil
Rouge is more, in the environment of high-frequency vibration, and bolt will not all loosen.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of permanent torque bolt in embodiment 1；
Fig. 2 is the structural schematic diagram of thread clamping mechanism in embodiment 1；
Fig. 3 is the structural schematic diagram of permanent torque bolt in embodiment 2；
Fig. 4 is the decomposition texture schematic diagram of Fig. 3；
Fig. 5 is the structural schematic diagram of locking thread clamping mechanism in embodiment 2；
Fig. 6 is the decomposition texture schematic diagram of Fig. 5；
Fig. 7 is the decomposition texture schematic diagram of permanent torque bolt in embodiment 3；
Fig. 8 is the decomposition texture schematic diagram of locking thread clamping mechanism in embodiment 3.
Wherein, permanent torque bolt 1, bolt 11, the first non-return helical teeth 111, the first bolt head 112, the second bolt head 113,
Fracture 114, annular groove 1141, inner hole 1142, anti-skidding pressing plate 12, the second non-return helical teeth 121, the non-return helical teeth 122 of third, directly
Slot structure 123, through-hole 124, fixing axle 13, shaft-cup 131, thread clamping mechanism ontology 2 cross line chamber 21, threaded hole 22, quiet collet 23.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below to apply in wire holding machine
For permanent torque bolt on structure, in conjunction with accompanying drawings and embodiments, the present invention will be further described in detail.It should manage
Solution says that the specific embodiment of description is used only for explaining the utility model herein, is not used to limit the utility model.
Embodiment 1:
As shown in Figure 1, permanent torque bolt 1, including bolt 11, one end of the bolt 11 are successively arranged the first spiral shell along axial direction
Bolt head 112 and the second bolt head 113 are equipped with fracture 114, the fracture between first bolt head 112 and the second bolt head 113
The peak torque that portion 114 is able to bear is less than the peak torque that 11 other parts of bolt are able to bear, when the first bolt head 112 is held
When the torque received is greater than the peak torque that fracture 114 is able to bear, fracture 114 can be broken to make the first bolt head 112
It is detached from from bolt 11.
The structure of the fracture 114 is that the annular groove 1141 of 11 outer surface of bolt is arranged in and is arranged in bolt
Inner hole 1142 inside 11, to keep the wall thickness at fracture 114 smaller and be broken at first when bearing torque, certainly, herein
Irregular shrinkage pool, fracture lines etc. can also be set at fracture 114 so that fracture 114 when bearing torque at first
Fracture.
As shown in Fig. 2, permanent torque bolt is applied to thread clamping mechanism, thread clamping mechanism includes permanent torque bolt 1 and wire holding machine
Structure ontology 2, wherein thread clamping mechanism ontology 2 is equipped with the mistake line chamber 21 passed through for current supply cable, and the cavity wall for crossing line chamber 21 is equipped with
Threaded hole 22, the cavity wall opposite with threaded hole 22 is as quiet collet 23, and bolt 11 is threadedly coupled with threaded hole 22, and bolt
11 other end cooperates clamping cable with quiet collet 23 towards quiet collet 23.
First bolt head 112, the second bolt head 113 and fracture 114 are set, can according to need and be pre-designed fracture
The maximum of portion 114 bears torque, in use, can first pass through the first bolt head 112 screws permanent torque bolt 1, is reaching fracture
It is broken from fracture 114 when the maximum receiving torque in portion 114 and is detached from the first bolt head 112, it in this way will not be because screwing
Torque is excessive and damages cable or thread clamping mechanism by pressure, so that torque when permanent torque bolt 1 screws tight is controllable, and can need to tear open
When unloading permanent torque bolt 1, permanent torque bolt 1 can be unscrewed by 113 counter force of the second bolt head, avoids permanent torque bolt 1
It can not dismantle and cause maintenance inconvenient.
Embodiment 2:
On the basis of 1 technical solution of embodiment, permanent torque bolt is further improved:
As shown in Figure 3,4, the other end of the bolt 11 is additionally provided with anti-skidding pressing plate 12, the back side of anti-skidding pressing plate 12 and bolt
11 front end is rotatably connected, and with the surface that anti-skidding pressing plate 12 fits to be respectively equipped with opposite first non-return for bolt 11
Respectively by the several first non-return helical teeth on helical teeth circle and the second non-return helical teeth circle, the first non-return helical teeth circle and the second non-return helical teeth circle
111 and several second non-return helical teeth 121 form, the first non-return helical teeth 111 and the second non-return helical teeth 121 can be intermeshed, the
One non-return helical teeth 111 screws contrary direction inclination towards with bolt 11, and the direction of the second non-return helical teeth 121 is stopped with first
The direction of inverse helical teeth 111 is on the contrary, to limit relatively anti-skidding 12 counter-rotating of pressing plate of bolt 11, the front of anti-skidding pressing plate 12 is to use
In the top splenium of press cable, it is opposite reverse by press cable to limit anti-skidding pressing plate 12 that the top splenium is equipped with anti-skid structure
Rotation.
The anti-skid structure is the non-return helical teeth 122 of third being arranged in the top splenium, the court of the non-return helical teeth 122 of third
To with the first non-return helical teeth 111 towards identical, so that it is opposite by press cable counter-rotating to limit anti-skidding pressing plate 12.
The mode that the back side of the anti-skidding pressing plate 12 and the front end of the bolt 11 are rotatably connected are as follows: the bolt
11 front end is equipped with fixing axle 13, and the anti-skidding pressing plate 12 is equipped with corresponding through-hole 124, the fixing axle 13 and through-hole 124
It is each passed through the center of the described first non-return helical teeth circle and the second non-return helical teeth circle, anti-skidding pressing plate 12 is by 124 sets of through-hole in spiral shell
It in the fixing axle 13 of bolt 11 and can relatively rotate, the end of fixing axle 13, which is additionally provided with, is detached from fixing axle for limiting anti-skidding pressing plate 12
13 shaft-cup 131.
As shown in Figure 5,6, permanent torque bolt 1 is applied to a kind of locking thread clamping mechanism, locking thread clamping mechanism includes permanent turns round
Square bolt 1 and thread clamping mechanism ontology 2, wherein thread clamping mechanism ontology 2 is equipped with the mistake line chamber 21 passed through for current supply cable, crosses line chamber
21 cavity wall is equipped with threaded hole 22, and the cavity wall opposite with threaded hole 22 is carried out as quiet collet 23, bolt 11 and threaded hole 22
It is threadedly coupled, and the top splenium of permanent torque bolt 1 cooperates clamping cable with quiet collet 23 towards quiet collet 23.
By being rotatably connected anti-skidding pressing plate 12 in the front end of bolt 11, the surface that bolt 11 and anti-skidding pressing plate 12 fit
Be respectively equipped with can intermeshing first non-return helical teeth 111 and the second non-return helical teeth 121, the first non-return helical teeth 111 towards with
Bolt 11 screws contrary direction inclination, the direction of the second non-return helical teeth 121 and the first non-return helical teeth 111 towards phase
Instead, to limit relatively anti-skidding 12 counter-rotating of pressing plate of bolt 11, in use, positive screwing bolts 11, bolt 11 is with anti-skidding
Pressing plate 12 presses cable, then proceedes to positive screwing bolts 11, the relatively anti-skidding pressing plate 12 of bolt 11 rotates forward and Anti-slip regulation
Pressing plate 12 holds out against cable on the quiet collet 23 of thread clamping mechanism ontology 2, since 12 front of anti-skidding pressing plate is equipped with anti-skid structure
The opposite cable counter-rotating of anti-skidding pressing plate 12 is limited, by engaging for the second non-return helical teeth 121 and the first non-return helical teeth 111, into
And prevent bolt 11 from relatively anti-skidding 11 counter-rotating of pressing plate, even if thus guarantee be bolted the time relatively long and grease compared with
In the environment of more, high-frequency vibration, bolt 11 will not all loosen.
Embodiment 3:
On the basis of 2 technical solution of embodiment, the improvement of another way is carried out to anti-skid structure:
As shown in fig. 7, the anti-skid structure is the straight groove structure 123 being arranged in the top splenium, the straight groove structure 123
For concave arc shape straight trough, so that cable surface be enable to be embedded, top splenium is by 123 inlay card of straight groove structure by press cable
Outer surface so as to limiting the opposite electric cable rotary of anti-skidding pressing plate 12.The perseverance torque bolt 1 is applied to a kind of locking clamp
Mechanism, as shown in Figure 8.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art
Member is it should be appreciated that utility model range involved in the application, however it is not limited to made of the specific combination of above-mentioned technical characteristic
Technical solution, at the same should also cover do not depart from the utility model design in the case where, by above-mentioned technical characteristic or its be equal
Feature carries out any combination and other technical solutions for being formed.Such as features described above and (but being not limited to) disclosed herein have
The technical solution for thering is the technical characteristic of similar functions to be replaced mutually and being formed.
Claims (6)
1. permanent torque bolt, including bolt, which is characterized in that one end of the bolt along axial direction be successively arranged the first bolt head and
Second bolt head is equipped with fracture, the peak torque that the fracture is able to bear between the first bolt head and the second bolt head
Less than the peak torque that bolt other parts are able to bear, when the torque that the first bolt head is born is greater than what fracture was able to bear
When peak torque, fracture can be broken to be detached from the first bolt head from bolt.
2. permanent torque bolt according to claim 1, which is characterized in that the structure of the fracture is to be arranged in the bolt
The annular groove of outer surface and/or the inner hole being arranged in inside bolt.
3. permanent torque bolt according to claim 1, which is characterized in that the other end of the bolt is equipped with anti-skidding pressing plate, prevents
The back side of sliding pressure plate is rotatably connected with bolt end, and be respectively equipped with can on bolt and anti-skidding the pressing plate surface that fits
Intermeshing first non-return helical teeth circle and the second non-return helical teeth circle, the first non-return helical teeth circle and the second non-return helical teeth circle respectively by
Several first non-return helical teeth and the second non-return helical teeth enclose, and the first non-return helical teeth direction screws contrary side with bolt
To inclination, the direction of the second non-return helical teeth is with the direction of the first non-return helical teeth on the contrary, inverse to limit the opposite anti-skidding pressing plate of bolt
To rotation, the front of anti-skidding pressing plate is the top splenium for pressing object, and it is anti-to limit that the top splenium is equipped with anti-skid structure
Sliding pressure plate is opposite by press object counter-rotating.
4. permanent torque bolt according to claim 3, which is characterized in that the anti-skid structure is to be arranged in the top splenium
The non-return helical teeth of third, the direction of the non-return helical teeth of third and the first non-return helical teeth are towards identical, to limit anti-skidding pressing plate phase
To by press object counter-rotating.
5. permanent torque bolt according to claim 3, which is characterized in that the anti-skid structure is to be arranged in the top splenium
Straight groove structure, top splenium by straight groove structure inlay card opposite so as to limit anti-skidding pressing plate by the outer surface of press object
Object rotation.
6. permanent torque bolt according to claim 3, which is characterized in that before the back side of the anti-skidding pressing plate and the bolt
Hold the mode being rotatably connected are as follows: the front end of the bolt is equipped with fixing axle, and the anti-skidding pressing plate is equipped with corresponding logical
Hole, the fixing axle and through-hole are each passed through the center of the described first non-return helical teeth circle and the second non-return helical teeth circle, anti-skidding pressing plate
It covers in the fixing axle of bolt and can relatively rotate by through-hole, the end of fixing axle is additionally provided with to be detached from for limiting anti-skidding pressing plate
The shaft-cup of fixing axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821372230.0U CN208919008U (en) | 2018-08-23 | 2018-08-23 | Permanent torque bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821372230.0U CN208919008U (en) | 2018-08-23 | 2018-08-23 | Permanent torque bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208919008U true CN208919008U (en) | 2019-05-31 |
Family
ID=66704067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821372230.0U Active CN208919008U (en) | 2018-08-23 | 2018-08-23 | Permanent torque bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208919008U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825621A (en) * | 2018-08-23 | 2018-11-16 | 广州番禺电缆集团有限公司 | A kind of perseverance torque bolt |
-
2018
- 2018-08-23 CN CN201821372230.0U patent/CN208919008U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825621A (en) * | 2018-08-23 | 2018-11-16 | 广州番禺电缆集团有限公司 | A kind of perseverance torque bolt |
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