CN219953842U - Fastening device and binding post - Google Patents
Fastening device and binding post Download PDFInfo
- Publication number
- CN219953842U CN219953842U CN202321637112.9U CN202321637112U CN219953842U CN 219953842 U CN219953842 U CN 219953842U CN 202321637112 U CN202321637112 U CN 202321637112U CN 219953842 U CN219953842 U CN 219953842U
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- fastener
- fastening device
- axial end
- protrusion
- face
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- 239000013013 elastic material Substances 0.000 claims abstract description 4
- 230000013011 mating Effects 0.000 claims description 14
- 230000000694 effects Effects 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Abstract
A fastening device, comprising: a first fastener comprising a first body and a first protrusion, wherein the first body comprises an aperture for receiving a portion of a screwing tool, the first protrusion protruding from the first body; a second fastener including a second body and a second protruding portion protruding axially outward from an axial end face of the body and including at least one fitting portion extending radially and having a first side face and a second side face in a circumferential direction, the first side face being inclined with respect to the axial end face of the second body; an intermediate link disposed between the first fastener and the second fastener, comprising a rotation hole and a recess, wherein the rotation hole is adjacent to the first fastener and cooperates with the first protrusion such that the first fastener drives the intermediate link to rotate together, and the recess is adjacent to the second fastener and comprises at least one engagement portion, the engagement portion cooperates with a corresponding cooperation portion of the second fastener; and the limiting piece is made of elastic materials.
Description
Technical Field
The present utility model relates to a fastening device, and more particularly, to a fastening device that facilitates the application of a suitable torque by a user.
Background
During the tightening operation of the fastening device, the user often cannot accurately determine whether the fastening device has been tightened in place, which may cause problems in both. First, when the fastening device has been screwed in place, the user misturns as not having been screwed in place, so that the user continues to increase the torque to tighten the fastening device more tightly, which may cause the user to apply excessive torque that damages the fastening device or the equipment attached to the fastening device. Secondly, when the fastening device is not yet screwed in place, the user misturns as having been screwed in place, so that the user does not continue to increase the torque to screw the fastening device more tightly, which may result in an undesirable fastening effect of the fastening device.
It is therefore desirable to provide a fastening device that solves the above-mentioned problems of the prior art.
Disclosure of Invention
According to a first aspect of the present utility model there is provided a fastening device comprising: a housing; a first fastener disposed within the housing rotatable about an axis thereof, the first fastener comprising a first body and a first protrusion, wherein the first body comprises an aperture disposed at a first end of the first body for receiving a portion of a screwing tool, the first protrusion protruding from a second end of the first body opposite the first end; a second fastener disposed within the housing rotatable about an axis thereof, the second fastener comprising a second body and a second projection, wherein the second projection projects axially outwardly from an axial end face of the body and comprises at least one mating portion extending radially and having a first side face and a second side face in a circumferential direction, the first side face being inclined relative to the axial end face of the second body; an intermediate link disposed between the first fastener and the second fastener, comprising a rotation hole and a recess, wherein the rotation hole is adjacent to the first fastener and cooperates with the first protrusion such that the first fastener can rotate the intermediate link together, and the recess is adjacent to the second fastener and comprises at least one engagement portion that cooperates with a corresponding cooperation portion of the second fastener; and the limiting piece is made of elastic materials, one end of the limiting piece abuts against the surface, facing the first fastening piece, of the middle connecting piece, and the other end of the limiting piece abuts against the shell.
According to this solution, when the torque applied by the user to the fastening device is sufficiently large, the intermediate connection is disengaged from the second fastening member, so that the user cannot continue to increase the torque and so that the user knows that it has applied a sufficiently large torque, so that the user can apply the correct torque to the fastening device.
In some aspects, the second side surface is perpendicular to the axial end surface of the second body.
According to this aspect, when the unscrewing operation is performed, the force between the engagement portion of the intermediate connection member and the second side surface has no component force in the axial direction, so that the unscrewing operation is more convenient.
In some aspects, the second protrusion includes four mating portions evenly spaced apart in the circumferential direction, wherein the first side and the second side are alternately arranged.
According to this solution, the first and second sides of the four mating parts cooperate with the second fastening member, so that the intermediate connecting member is easier to rotate the second fastening member together.
In some aspects, the second protrusion may also include six mating portions evenly spaced apart in the circumferential direction, wherein the first side and the second side are alternately arranged.
In some aspects, the first side surface is inclined at an angle of less than 80 ° relative to the axial end surface of the second body.
According to this aspect, the smaller the inclination angle of the first side face with respect to the axial end face of the second body, the larger the component force in the axial direction of the force of the second fastener against the intermediate connecting member, so that the intermediate connecting member is more likely to disengage from the second fastener, resulting in a smaller maximum torque that the user can apply to the second fastener.
In some aspects, the first side surface may also be inclined at an angle of less than 70 ° relative to the axial end surface of the second body.
In some aspects, the stop is a spring.
In some aspects, the intermediate connector has a stepped configuration including a first portion and a second portion having a radial dimension greater than the first portion, wherein the rotation aperture is disposed in the first portion and the recess is disposed in the second portion, with an end of the limiter proximate the intermediate connector abutting the second portion.
In some aspects, the rotation hole may be square, and the first protrusion has a square cross section corresponding to the rotation hole.
In some aspects, the first side surface is inclined relative to the axial end surface of the second body in such a manner that the mating portion tapers in a direction toward the intermediate connector.
In some aspects, when a tightening operation is performed, if a torque less than a threshold is applied to the first fastener, the engagement portion of the intermediate connector contacts the first side such that the intermediate connector rotates the second fastener together, and if a torque greater than the threshold is applied to the first fastener, the engagement portion of the intermediate connector disengages from the first side such that the intermediate connector no longer rotates the second fastener together.
In some aspects, when the unscrewing operation is performed, the engagement portion of the intermediate connector contacts the second side such that the intermediate connector rotates the second fastener together.
According to a second aspect of the present utility model there is provided a terminal comprising a fastening device according to the first aspect of the present utility model.
Drawings
FIG. 1 shows a schematic view of a fastening device according to an embodiment of the utility model;
FIG. 2 shows an exploded view of a fastening device according to an embodiment of the utility model;
FIG. 3 shows a schematic view of a first fastener according to the present utility model;
FIG. 4 shows a schematic view of an intermediate connection according to the present utility model;
fig. 5 shows a schematic view of a second fastener according to the utility model.
Reference numerals: 100 fastening means, 110 first fastening means, 112 first body, 114 first projection, 116 aperture, 120 stop, 130 intermediate connection, 132 rotation hole, 134 recess, 136 engagement, 140 second fastening means, 142 second body, 144 second projection, 146 mating portion, 147 first side, 148 second side, 150 housing, 200 connecting tab.
Detailed Description
In order to make the objects, aspects and advantages of the technical solution of the present utility model more clear, the technical solution of the embodiment of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiment of the present utility model. Unless otherwise indicated, terms used herein have the meaning common in the art. Like reference numerals in the drawings denote like parts.
Fig. 1 shows a schematic view of a fastening device 100 according to an embodiment of the present utility model, comprising a first fastening member 110, a second fastening member 140, an intermediate connection member 130 and a stopper 120 in that order in spatial position. When performing a tightening operation, the user may use the tightening tool to rotate the first fastener 110 such that the first fastener rotates the intermediate connector 130 together, but then the intermediate connector 130 is not necessarily able to rotate the second fastener 140 together, whether the intermediate connector 130 is able to rotate the second fastener 140 together depends on the amount of torque the user applies to the first fastener 110. Specifically, if the torque applied by the user to the first fastener 110 is small, the intermediate connector 130 can drive the second fastener 140 to rotate together, in which case the user can still screw harder. If the torque applied to the first fastener 110 is greater, the intermediate connector 130 no longer rotates the second fastener 140 together, in which case the user cannot screw harder. In this way, the user is not allowed to perform a screwing operation with excessive force to cause damage to the fastening device 100 or the equipment attached to the fastening device 100, and is allowed to clearly perceive whether it has been screwed in place (i.e., whether the screwing operation has not been performed with a larger torque) to avoid that the fastening device 100 is not sufficiently fastened in place. A method of achieving the above functions will be described in detail below.
As shown in fig. 3, the first fastener 110 includes a first body 112 and a first protrusion 114 protruding from a second end of the first body 112, the first body 112 including an aperture 116 disposed at a first end of the first body 112 opposite the second end for receiving a screwing tool. As shown in fig. 5, the second fastener includes a second body 142 and a second protrusion 144 protruding outwardly from an axial end surface of the second body 142, the second protrusion 144 including at least one fitting portion 146, the fitting portion 146 extending radially and having a first side 147 and a second side 148 in a circumferential direction, the first side 147 being inclined with respect to the axial end surface of the second body 142 (i.e., the first side 147 is not parallel to the axial direction). Alternatively, the first side 147 is inclined with respect to the axial end surface of the second body 142 in such a manner that the fitting portion 146 becomes gradually narrower in a direction toward the intermediate connection member 130.
As shown in fig. 4, the intermediate connection 130 includes a rotation hole 132 adjacent to the first fastener 110 and engaged with the first protrusion 114, and a recess 134 adjacent to the second fastener 140, respectively. The user may insert a screwing tool into the aperture 116 to perform a screwing operation such that the first protrusion 114 is in contact with the rotation hole 132 to cause the first fastener 110 to rotate together with the intermediate connection 130. The recess 134 includes at least one engagement portion 136 that mates with a corresponding mating portion 146 of the second fastener 140, such that when the intermediate connector 130 is rotated, the mating portion 146 may contact the engagement portion 136 to cause the intermediate connector 130 to rotate with the second fastener 140.
When the tightening operation is performed, the first side 147 of the fitting portion 146 contacts the engaging portion 136, and since the first side 147 is not parallel to the axial direction, the force between the first side 147 and the engaging portion 136 has a component force in the axial direction, so that the intermediate connection member 130 moves away from the second fastener 140 in the axial direction. A stopper 120 (for example, the stopper 120 may be a spring) made of an elastic material is provided between the intermediate link 130 and the first fastener 110, and when the intermediate link 130 moves away from the second fastener 140 in the axial direction, the intermediate link 130 compresses the stopper 120 such that the stopper 120 generates an elastic force.
If the user applies a small force, the force component in the axial direction between the first side 147 and the engagement portion 136 is small enough to resist the elastic force of the stopper 120, so that the stopper 120 can restrict the intermediate connector 130 from moving further away from the second fastener 140 in the axial direction, so that the intermediate connector 130 still remains in contact with the second fastener 140, and can still rotate the second fastener 140 together. If the user applies a large force, the force component in the axial direction between the first side 147 and the engaging portion 136 is large enough to resist the elastic force generated by the limiting member 120, so that the limiting member 120 cannot limit the intermediate connecting member 130 from moving further away from the second fastening member 140 in the axial direction, so that the intermediate connecting member 130 is out of contact with the second fastening member 140 and cannot rotate the second fastening member 140 together.
Preferably, the second side 148 may be perpendicular to the axial end surface of the second body 142, and the second side 148 of the fitting portion 146 contacts the engagement portion 136 when the unscrewing operation is performed, since the second side 148 is parallel to the axial direction, the force between the second side 148 and the engagement portion 136 has no component force in the axial direction, so that the intermediate connection member 130 has no adverse impeding effect on the unscrewing operation.
Preferably, the second protrusion 144 may include a plurality (e.g., four or six) of mating portions 146, each mating portion 146 being uniformly spaced apart in the circumferential direction, wherein the first side 147 and the second side 148 are alternately arranged, which may ensure that only the first side 147 is in contact with the engagement portion 136 when a tightening operation is performed, and only the second side 148 is in contact with the engagement portion 136 when a loosening operation is performed. It should be understood that the present utility model is not intended to limit the number of second protrusions 144.
If the inclination angle of the first side 147 with respect to the axial end surface of the second body 142 is smaller, the component force in the axial direction of the force of the second fastener 140 to the intermediate link 130 is larger, so that the intermediate link 130 is more likely to disengage from the second fastener 140, resulting in a smaller maximum torque that the user can apply to the second fastener 140. Accordingly, the inclination angle of the first side 147 with respect to the axial end surface of the second body 142 may be designed based on the minimum torque required to secure the fastening effect. For the above-described case where the minimum torque is small, the inclination angle of the first side 147 with respect to the axial end face of the second body 142 may be designed to be small accordingly. While for the above-described case where the minimum torque is large, the inclination angle of the large first side 147 with respect to the axial end face of the second body 142 may be designed accordingly. For example, the angle of inclination of the first side 147 relative to the axial end surface of the second body 142 may be less than 80 ° or less than 70 °, it being understood that the utility model is not intended to limit the angle of inclination of the first side 147 relative to the axial end surface of the second body 142.
Alternatively, the intermediate link 130 may have a stepped structure including a first portion in which the rotation hole 132 is provided and a second portion having a larger radial dimension than the first portion in which the recess 134 is provided, and one end of the stopper 120 adjacent to the intermediate link 130 abuts against the second portion.
Alternatively, the rotation hole 132 may be square, and the first protrusion 114 has a square cross section corresponding to the rotation hole 132, and it should be understood that the present utility model is not intended to limit the shape of the rotation hole 132, and the rotation hole 132 may have a triangle shape or any other suitable shape.
Optionally, the fastening device 100 may further comprise a housing 150, wherein the first fastener 110, the second fastener 140, the intermediate connector 130 and the limiter 120 are arranged within the housing 150, and an end of the limiter 120 remote from the intermediate connector 130 may abut against the housing 150.
The fastening device 100 of the present utility model can be applied to a connection terminal including a connection piece 200, and in particular, a user can rotate a first fastening member 110 using a screwing tool, then the first fastening member 110 drives an intermediate connection member 130 to rotate together, then the intermediate connection member 130 drives a second fastening member 140 to rotate together, and finally the second fastening member 140 applies pressure to the connection piece 200 of the connection terminal to fasten the connection piece 200. During the fastening operation of the connection piece 200, there are often cases where the user does not apply enough torque to perform the screwing operation, so that the connection terminal has quality problems such as heat burning and the like and potential safety hazards. There are also cases where the user applies excessive torque to perform the screwing operation, possibly resulting in damage to the connection terminal. By using the fastening device 100 of the present utility model to perform the fastening operation on the connection piece 200, the user can perform the screwing operation with a proper torque, neither causing poor fastening effect due to the lack of tightening in place nor causing damage to the apparatus due to excessive force.
Various exemplary embodiments of the present utility model have been described in detail herein with reference to the preferred embodiments, however, it will be appreciated by those skilled in the art that various modifications and adaptations can be made to the specific embodiments described above and that various technical features and structures can be combined without departing from the scope of the utility model, which is defined by the appended claims.
Claims (13)
1. A fastening device, comprising:
a housing;
a first fastener disposed within the housing rotatable about an axis thereof, the first fastener comprising a first body and a first protrusion, wherein the first body comprises an aperture disposed at a first end of the first body for receiving a portion of a screwing tool, the first protrusion protruding from a second end of the first body opposite the first end;
a second fastener provided within the housing rotatably about an axis thereof, the second fastener including a second body and a second protruding portion, wherein the second protruding portion protrudes axially outward from an axial end face of the second body and includes at least one fitting portion that extends radially and has a first side face and a second side face in a circumferential direction, the first side face being inclined with respect to the axial end face of the second body;
an intermediate link disposed between the first and second fasteners, including a rotation aperture proximate the first fastener and mated with the first protrusion such that the first fastener is capable of rotating the intermediate link together, and a recess proximate the second fastener and including at least one engagement portion mated with a corresponding mating portion of the second fastener;
and the limiting piece is made of elastic materials, one end of the limiting piece abuts against the surface of the middle connecting piece, which faces the first fastening piece, and the other end of the limiting piece abuts against the shell.
2. The fastening device of claim 1, wherein the second side surface is perpendicular to an axial end surface of the second body.
3. The fastening device of claim 2, wherein the second projection comprises four mating portions evenly spaced apart in a circumferential direction, wherein the first side and the second side are alternately arranged.
4. The fastening device of claim 2, wherein the second projection comprises six mating portions evenly spaced apart in a circumferential direction, wherein the first side and the second side are alternately arranged.
5. The fastening device of claim 1, wherein the first side surface is inclined at an angle of less than 80 ° relative to the axial end surface of the second body.
6. The fastening device of claim 5, wherein the first side surface is inclined at an angle of less than 70 ° relative to the axial end surface of the second body.
7. The fastening device of claim 1, wherein the stop is a spring.
8. The fastening device according to claim 1, wherein the intermediate connection has a stepped structure comprising a first portion and a second portion having a larger radial dimension than the first portion, wherein the rotation hole is provided in the first portion, the recess is provided in the second portion, and an end of the stopper adjacent to the intermediate connection abuts against the second portion.
9. The fastening device of claim 1, wherein the rotation hole is square, and the first protrusion has a square cross section corresponding to the rotation hole.
10. A fastening device according to claim 1, wherein the first side face is inclined with respect to the axial end face of the second body in such a manner that the mating portion becomes gradually narrower in a direction toward the intermediate connection member.
11. The fastening device of claim 1, wherein when a tightening operation is performed, if a torque less than a threshold is applied to the first fastener, the engagement portion of the intermediate link contacts the first side such that the intermediate link rotates the second fastener together, and if a torque greater than a threshold is applied to the first fastener, the engagement portion of the intermediate link disengages from the first side such that the intermediate link no longer rotates the second fastener together.
12. A fastening device according to claim 2, wherein the engagement portion of the intermediate connector contacts the second side surface when the unscrewing operation is performed, such that the intermediate connector rotates the second fastener together.
13. A terminal comprising a fastening device according to any one of claims 1 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321637112.9U CN219953842U (en) | 2023-06-26 | 2023-06-26 | Fastening device and binding post |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321637112.9U CN219953842U (en) | 2023-06-26 | 2023-06-26 | Fastening device and binding post |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219953842U true CN219953842U (en) | 2023-11-03 |
Family
ID=88538182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321637112.9U Active CN219953842U (en) | 2023-06-26 | 2023-06-26 | Fastening device and binding post |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219953842U (en) |
-
2023
- 2023-06-26 CN CN202321637112.9U patent/CN219953842U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |