CN201448330U - Limit torque fastener and limit torque bolt - Google Patents
Limit torque fastener and limit torque bolt Download PDFInfo
- Publication number
- CN201448330U CN201448330U CN200920006943XU CN200920006943U CN201448330U CN 201448330 U CN201448330 U CN 201448330U CN 200920006943X U CN200920006943X U CN 200920006943XU CN 200920006943 U CN200920006943 U CN 200920006943U CN 201448330 U CN201448330 U CN 201448330U
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- China
- Prior art keywords
- limited torque
- link
- actuator
- screw thread
- bolt
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- 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 - Lifetime
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Abstract
The utility model discloses a limit torque fastener which comprises a driving piece (1) and a connecting piece (2), and the driving piece is connected with the connecting piece through limit torque threads (1-2, 2-2). By adopting the limit torque threads, when the specified torque is reached, the limit torque threads loosen, the driving piece is separated from the connecting piece, and the connecting piece is mounted in position according to the specified torque. The utility model provides a limit torque bolt as a fastener, the limit torque bolt comprises a driving piece (1) and a connecting piece (2), and the driving piece is connected with the connecting piece through limit torque threads (1-2, 2-2). According to the fastener, the connecting piece is ensured to be mounted according to specified torque, and the limit torque fastener has simple structure, low manufacturing cost and can be mounted by common tools.
Description
Technical field
The utility model relates to a kind of fastening piece, and relates in particular to the limited torque fastening piece that a kind of user of guaranteeing reaches prescribed torque, as the limited torque bolt.
Background technique
Before circuit breaker uses, connect installation by being threaded with user's terminal usually.Reliably be connected with user's terminal in order to ensure circuit breaker, usually, there is certain requirement in producer to mounting torque.
Traditionally, in order to reach certain moment of torsion, can utilize torque wrench to install, but be not that each user installation scene all has torque wrench, this makes troubles to installment work, and makes installment work become complicated.Usually, owing to there is not torque wrench, only according to feeling to estimate whether reach prescribed torque, this can bring circuit breaker to be connected unusual hidden danger with user's terminal to the user in installation process.
In order to overcome this problem, in the prior art, as in No. 4687392, U.S. Pat, a kind of limited torque fastening piece is disclosed, be generally a kind of form of nut at this fastening piece, this nut comprises external head element and internal whorl element, insert and put a limited torque ring outside between size element and the internal whorl element, cut out a plurality of elastic claws on the limited torque ring, so that when tightening this nut, the moment of torsion that will be applied on the external head element by elastic claw is delivered to the internal whorl element, and when reaching predetermined torque, this elastic claw distortion makes external head element and internal whorl element throw off.But this fastener constructions complexity causes manufacture cost to increase.
In addition, in No. 3498174, U.S. Pat, a kind of limited torque bolt is disclosed, wherein, but bolt head be connected with bolt shank by a breaking part, when being applied to certain moment of torsion, but should breaking part disconnect, make bolt head to throw off with bolt shank.But because bolt head comes off after installing, this bolt is generally used for the occasion of permanent fixation, that is to say, this bolt can not be reused, and therefore, is not suitable for this equipment that needs field-strip of circuit breaker.In addition,, in bolt head comes off process, can produce and impact, might cause danger the operator because in installation process, bolt head comes off.
Therefore, in the prior art, especially in circuit breaker is installed, need a kind of limited torque fastening piece, this fastener constructions is simple, and low cost of manufacture does not need specialized apparatus to install, and reaches the moment of torsion of regulation between can guaranteeing to connect, and can reuse.
And, needing a kind of limited torque fastening piece, this fastening piece does not have the part of disconnection, even still can guarantee operator's safety under the high pulling torque installation conditions.
The model utility content
The purpose of this utility model is to provide a kind of limited torque fastening piece, and this fastener constructions is simple, and simple installation, reach the moment of torsion of regulation between can guaranteeing to connect, and this fastening piece can be reused.
According to the utility model, a kind of limited torque fastening piece is provided, comprise actuator and link, described actuator and link interconnect by the limited torque screw thread.Actuator can be by common setting tool, and as wrench operated, and link is used to be installed to predetermined workpiece.
Preferably, described link has binding thread, and to be connected on the predetermined workpiece, described limited torque screw thread is opposite with the rotation direction of described binding thread.
On the other hand of the present utility model, a kind of limited torque bolt is provided, comprise actuator and link, described actuator and link interconnect by the limited torque screw thread.Described actuator one end has driver slot, and the other end has described limited torque screw thread, and described link one end has binding thread, and the other end has described limited torque screw thread, so as with the limited torque threaded engagement of described actuator.The rotation direction of described limited torque screw thread is opposite with the rotation direction of described binding thread.
Described driver slot has and is suitable for and driving tool, the shape of cross section that is meshed as hexagon wrench, a word or Phillips screwdriver etc.
Described link comprises head and bar portion, and described binding thread is formed in the described bar portion.Described head has the cross section that is suitable for tool holding.
Description of drawings
Above-mentioned and/or other advantages of the present utility model and purposes can be easy to understand from detailed description with reference to the accompanying drawings, among the figure:
Fig. 1 is the perspective exploded view according to the limited torque bolt of the utility model preferred implementation;
Fig. 2 is the perspective view according to the limited torque bolt of the utility model preferred implementation;
Fig. 3 is the perspective view according to the actuator of the limited torque bolt of the utility model preferred implementation; And
Fig. 4 is the perspective view according to the link 2 of the limited torque bolt of the utility model preferred implementation.
Embodiment
Below, describe in detail according to preferred implementation of the present utility model with reference to accompanying drawing, among the figure, Fig. 1 is the perspective exploded view according to the limited torque bolt of the utility model preferred implementation, and Fig. 2 is the perspective view according to the limited torque bolt of the utility model preferred implementation; And Fig. 3 is the perspective view according to the actuator of the limited torque bolt of the utility model preferred implementation.
Referring to figs. 1 through Fig. 3, comprise actuator 1 and link 2 according to the limited torque bolt of the utility model preferred implementation.Actuator 1 is roughly cylindrical, has driver slot 1-1 at its first end, and this driver slot 1-1 has suitable cross section, as shown in Figure 3, can be hexagon, so that engaged by hexagon wrench.Certainly, the shape of this driver slot 1-1 is not limited thereto, and for example, this driver slot 1-1 can be cross or in-line, so that engaged by screw-driver.In other cases, this driver slot 1-1 can be shapes such as square, as long as can be engaged by proper implements, gets final product so that drive the rotation of limited torque bolt.In addition, first end of this actuator 1 can have projection, as the projection of hexagonal cross-section, so that driven by spanner.Perhaps, first end of this actuator 1 can not comprise driver slot or projection, but this actuator 1 is from as hexagonal transverse cross section, perhaps is roughly cylindrically, and has two relative flat surfaces as drive surface, so that driven by spanner.
As shown in Figure 3, actuator 1 have limited torque screw thread 1-2 with the first end second opposed end, preferably, this limited torque screw thread 1-2 is an outside thread, so that be meshed with the limited torque screw thread 2-2 of link 2.
As shown in Figure 4, link 2 comprises link head and bar portion, and this link head has limited torque screw thread 2-2, and this limited torque screw thread 2-2 is an internal thread, so that be meshed with the limited torque screw thread 1-2 of actuator 1.Below limited torque screw thread 2-2, be formed with driver slot 2-1, be similar to the driver slot 1-1 of actuator 1, the driver slot 2-1 of link 2 is formed with hexagonal transverse cross section or other suitable shape of cross sections, so that engaged by driving tool.Bar portion is formed with binding thread 2-4, so that link 2 is installed on the circuit breaker, circuit breaker is connected with user's terminal.The rotation direction of binding thread 2-4 is opposite with the rotation direction of limited torque screw thread 2-2.
In addition, the head of link 2 has on-slip face 2-3, makes whole head to be clamped in the time of can being used for executing moment of torsion in advance and to be used by the driving tool clamping as spanner.
Below, the working method according to the limited torque bolt of the utility model preferred implementation is described.
When dispatching from the factory, as shown in Figure 2, actuator 1 is connected with 2-2 by limited torque screw thread 1-2 with link 2, and this limited torque screw thread 1-2 and 2-2 are applied the moment of torsion of regulation in advance, makes that the two could be thrown off when only having prescribed torque between the two.
The limited torque bolt is installed to the specified position that circuit breaker is connected with terminal,, engages with the driver slot 1-1 of actuator 1, drive whole limited torque bolt as hexagon wrench by driving tool.
The moment of torsion of driving tool is passed to link 2 by limited torque screw thread 1-2 and 2-2, and drives link 2, makes binding thread 2-1 be screwed in the circuit breaker and fastening putting in place.Surpass the prescribed torque that limited torque screw thread 1-2 and 2-2 set along with being applied to the moment of torsion increase on the actuator 1, the limited torque screw thread 2-2 of the limited torque screw thread 1-2 of actuator 1 and link 2 begins to throw off.With actuator 1 after link 2 is backed out, link 2 can with the regulation moment of torsion be in place, thereby guaranteed required mounting torque.
By suitable driving tool such as hexagon wrench being passed among the driver slot 2-1 that limited torque screw thread 2-2 is inserted into link 2, link 2 can be pulled down equally.
From top description as can be seen, have following advantage according to limited torque fastening piece of the present utility model:
1. actuator is connected by the limited torque screw thread with link, thereby when not reaching even twisting moment, actuator can't spin off from link, and installation process can't finish, thereby has guaranteed to reach fixing mounting torque;
2. fracture can not take place between actuator and the link in installation process impact, can not cause damage to the operator;
3. after end being installed, can easily pull down link when needed;
Between actuator and the link only by being threaded, needn't adopt complicated limited torque ring structure, reduced manufacture cost; And
5. can adopt general tool to install according to limited torque fastening piece of the present utility model, simplify installation process.
Though the utility model is described in detail and illustrates with reference to preferred implementation of the present utility model, but, it will be appreciated by those skilled in the art that, top detailed description is only used for explaining preferred implementation of the present utility model, and the utility model never is restricted to this, but can carry out various modifications in the scope of appending claims.
In the superincumbent description, be that example has been explained the utility model, still, obviously can be applied to any moment of torsion is had the occasion of requirement, and be not limited to the application that circuit breaker is connected with user's terminal according to limited torque fastening piece of the present utility model with the circuit breaker.
Claims (16)
1. a limited torque fastening piece comprises actuator (1) and link (2), it is characterized in that, (1-2 2-2) interconnects by the limited torque screw thread for described actuator (1) and link (2).
2. limited torque fastening piece as claimed in claim 1 is characterized in that, described link (2) comprises binding thread (2-4), and described limited torque screw thread (1-2,2-2) is opposite with the rotation direction of described binding thread (2-4).
3. limited torque fastening piece as claimed in claim 2 is characterized in that, the limited torque screw thread (1-2) of described actuator (1) is an outside thread, and the limited torque screw thread (2-2) of described link (2) is an internal thread.
4. limited torque fastening piece as claimed in claim 1 is characterized in that, described actuator (1) also comprises driver slot (1-1), drives described actuator (1) to engage with driving tool.
5. limited torque fastening piece as claimed in claim 1 is characterized in that, described link (2) comprises driver slot (2-1), drives described link (2) to engage with driving tool.
6. as each described limited torque fastening piece in the claim 1 to 5, it is characterized in that the periphery of described actuator (1) comprises drive surface, drive described actuator (1) so that engage with driving tool.
7. as each described limited torque fastening piece in the claim 1 to 5, it is characterized in that the periphery of described link (2) comprises on-slip face (2-3), be fixedly clamped when applying moment of torsion in advance.
8. a limited torque bolt comprises actuator (1) and link (2), it is characterized in that, (1-2 2-2) interconnects by the limited torque screw thread for described actuator (1) and link (2).
9. limited torque bolt as claimed in claim 8 is characterized in that, described link (2) comprises binding thread (2-4), and described limited torque screw thread (2-2) is opposite with the rotation direction of described binding thread (2-4).
10. limited torque bolt as claimed in claim 9 is characterized in that, the limited torque screw thread (1-2) of described actuator (1) is an outside thread, and the limited torque screw thread (2-2) of described link (2) is an internal thread.
11. limited torque bolt as claimed in claim 8 is characterized in that, described actuator (1) also comprises driver slot (1-1), drives described actuator (1) to engage with driving tool.
12. limited torque bolt as claimed in claim 10 is characterized in that, described link (2) comprises driver slot (2-1), drives described link (2) to engage with driving tool.
13. limited torque bolt as claimed in claim 12 is characterized in that, described driver slot (2-1) engages described driver slot (2-1) in described limited torque screw thread (2-2) below so that driving tool can be passed described limited torque screw thread (2-2).
14. as each described limited torque bolt in the claim 8 to 13, it is characterized in that the periphery of described actuator (1) comprises on-slip face, drive described actuator (1) so that engage with driving tool.
15. as each described limited torque bolt in the claim 8 to 13, it is characterized in that the periphery of described link (2) comprises on-slip face (2-3), drive described link (2) so that engage with driving tool.
16. limited torque bolt as claimed in claim 15 is characterized in that, described link (2) comprises head and bar portion, and described limited torque screw thread is formed on described head, and binding thread is formed on described bar portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920006943XU CN201448330U (en) | 2009-03-16 | 2009-03-16 | Limit torque fastener and limit torque bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920006943XU CN201448330U (en) | 2009-03-16 | 2009-03-16 | Limit torque fastener and limit torque bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201448330U true CN201448330U (en) | 2010-05-05 |
Family
ID=42553045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920006943XU Expired - Lifetime CN201448330U (en) | 2009-03-16 | 2009-03-16 | Limit torque fastener and limit torque bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201448330U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168708A (en) * | 2011-04-13 | 2011-08-31 | 陈文才 | Screw |
| CN103032643A (en) * | 2011-09-30 | 2013-04-10 | (株）东亚金属 | Torque control cap for hose clamp |
| CN113366228A (en) * | 2019-02-01 | 2021-09-07 | 博萨尔德股份公司 | Fastener device for producing a threaded connection |
-
2009
- 2009-03-16 CN CN200920006943XU patent/CN201448330U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168708A (en) * | 2011-04-13 | 2011-08-31 | 陈文才 | Screw |
| CN103032643A (en) * | 2011-09-30 | 2013-04-10 | (株）东亚金属 | Torque control cap for hose clamp |
| CN113366228A (en) * | 2019-02-01 | 2021-09-07 | 博萨尔德股份公司 | Fastener device for producing a threaded connection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100505 |
|
| CX01 | Expiry of patent term |