CN214367179U - Rivet pulling mechanism with good concentricity - Google Patents
Rivet pulling mechanism with good concentricity Download PDFInfo
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- CN214367179U CN214367179U CN202023316456.9U CN202023316456U CN214367179U CN 214367179 U CN214367179 U CN 214367179U CN 202023316456 U CN202023316456 U CN 202023316456U CN 214367179 U CN214367179 U CN 214367179U
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- connecting unit
- positioning
- unit
- concentricity
- blind rivet
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Abstract
The utility model discloses a rivet pulling mechanism with good concentricity, which comprises a first connecting unit and a second connecting unit, wherein the first connecting unit comprises an internal thread part and an installation groove part; the second connecting unit comprises an external thread part and a positioning part matched with the mounting groove part; the gap between the outer side wall of the positioning part of the second connecting unit and the mounting groove part of the first connecting unit is positioned in a preset gap range; and the concentricity variation of the first connecting unit before and after being riveted with the second connecting unit is less than phi 0.2 mm. The utility model discloses at least, include following advantage: under the effect of the rivet pulling force from left to right, the positioning part can continuously play a role in positioning the position of bulging deformation in the process that the structure corresponding to the installation groove part bulges and deforms, so that the first connecting unit completes the outward convex circumferential directional deformation, and the first connecting unit is guaranteed to have better concentricity relative to the second connecting unit.
Description
Technical Field
The utility model relates to a rivet technical field, specific is a rivet pulling mechanism that concentricity is good.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
The riveting nut in the prior art generally comprises a threaded part and a step unthreaded hole part, and the riveting principle is that the step unthreaded hole part is subjected to bulging deformation by the pulling force provided by a riveter. In the prior art, a clearance fit mode is adopted between the connecting piece butted with the riveting nut and the step unthreaded hole part, and a clearance between the connecting piece butted with the riveting nut and the step unthreaded hole part is large, so that the position is deformed into full-circle free deformation, the stress is not uniform, and the phenomenon of eccentricity can occur after riveting between the riveting nut and the connecting piece.
It should be noted that the above background description is only for the sake of clarity and complete description of the technical solutions of the present invention, and is set forth for facilitating understanding of those skilled in the art. These solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present invention.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defect in the prior art, the embodiment of the utility model provides a rivet mechanism that concentricity is good, its is under the effect of rivet force from left to right, location portion can the in-process that the structure that the installation slot part corresponds becomes the drum and warp continues to play the positioning action to the position that becomes the drum deformation, and then makes outside bellied directional deformation in whole week is accomplished to first connecting unit, guarantees first connecting unit has better concentricity for the second connecting unit.
The embodiment of the application discloses: a pull rivet mechanism with good concentricity comprises:
a first connection unit including an internal thread portion and an attachment groove portion that are provided in parallel in an axial direction;
a second connecting unit which can be inserted into the first connecting unit and includes male screw portions arranged in parallel in an axial direction and positioning portions engaged with the mounting groove portions;
when the second connecting unit is inserted into the first connecting unit, a gap between the outer side wall of the positioning part of the second connecting unit and the mounting groove part of the first connecting unit is located in a preset gap range;
and the concentricity variation of the first connecting unit before being riveted with the second connecting unit and after being riveted with the second connecting unit is less than phi 0.2 mm.
Further, the variation amount of concentricity of the second connecting unit before and after insertion of the first connecting unit is between Φ 0.1 and Φ 0.2 mm.
Further, the positioning portion and the external thread portion are integrally formed, and the positioning portion can be embedded with the installation groove portion after the second connection unit is inserted from the first end face of the first connection unit.
Further, the internal thread portion extends to the second end face of the first connection unit in the axial direction so that the second connection unit can be inserted from the second end face of the first connection unit.
Further, the first end face of the first connecting unit protrudes outwards to form a flange portion, and the side wall of the positioning portion can be abutted against the side wall of the flange portion.
Further, a spline part is arranged on the outer side wall of the first connecting unit and close to the flange part.
Further, the flower tooth part is arranged corresponding to the installation groove part.
Furthermore, the positioning part is sleeved on the external thread part in a sliding mode or locked on the external thread part in a threaded mode.
Borrow by above technical scheme, the beneficial effects of the utility model are as follows: through the arrangement of the first connecting unit and the second connecting unit, the second connecting unit can be inserted into the first connecting unit, so that the external thread part and the internal thread part are locked, and the positioning piece is embedded in the mounting groove; through foretell mode of setting, under the effect of the rivet pulling power from left to right, location portion can the structure that the installation slot part corresponds plays the positioning action to the position that the drum warp that continues, and then makes first connecting element accomplishes outside bellied directional deformation in the whole week, guarantees first connecting element has better concentricity for the second connecting element.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of an overall device before installation in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of the whole device after installation in the embodiment of the present invention;
FIG. 3 is a schematic structural view of the whole device after rivet pulling in the embodiment of the present invention;
fig. 4 is a schematic structural diagram of an overall device before installation in another embodiment of the present invention.
Reference numerals of the above figures: 1. a first connecting unit; 2. a second connection unit; 11. an internal thread portion; 12. an installation groove part; 13. a first end face; 14. a second end face; 15. a flange portion; 16. a spline portion; 21. an external threaded portion; 22. a positioning part.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that, in the description of the present invention, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no order is shown between the two, and no indication or suggestion of relative importance is understood. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Referring to fig. 1 to 4, the present embodiment discloses a blind rivet mechanism with good concentricity, which includes a first connection unit 1 and a second connection unit 2. The first connecting unit 1 comprises an internal thread part 11 and an installation groove part 12 which are arranged in parallel along the axial direction; the second connecting unit 2 comprises external thread parts 21 arranged in parallel along the axial direction and positioning parts 22 matched with the mounting groove parts 12; the second connection unit 2 can be inserted into the first connection unit 1, so that the external thread portion 21 and the internal thread portion 11 are locked, and the positioning member is embedded in the installation groove. Through the above arrangement mode, under the effect of the rivet pulling force from left to right, the positioning part 22 can continuously play a role in positioning the position of the deformation of the drum in the process of the deformation of the drum of the structure corresponding to the installation groove part 12, so that the first connection unit 1 completes the directional deformation of the outward bulge in the whole circumference, and the first connection unit 1 is ensured to have better concentricity relative to the second connection unit 2.
In the present embodiment, the first connection unit 1 may be a detachable rivet nut or a rivet nut directly formed on a plate material, and the rivet nut is located in a horizontal plane, and the left and right ends of the rivet nut are defined as a first end surface 13 and a second end surface 14, respectively. The first end surface 13 of the clinch nut is recessed from right to left in the axial direction thereof to form the attachment groove portion 12 and the female screw portion 11.
In one embodiment, the positioning portion 22 is integrally formed with the external thread portion 21, specifically, the second connection unit 2 may adopt a screw rod having the external thread portion 21, and an outer side wall of the second connection unit 2 protrudes outward to form the positioning portion 22. The second connecting unit 2 can be inserted into the first connecting unit 1 from right to left in a horizontal plane, so that the external thread portion 21 is locked with the internal thread portion 11, and the positioning portion 22 is partially embedded in the mounting groove portion 12 and is in clearance fit with the inner side wall of the first connecting unit 1. Specifically, when the second connection unit 2 is inserted into the first connection unit 1 and the first connection unit 1 is before riveting with the second connection unit 2, the preset range of concentricity between the first connection unit 1 and the second connection unit 2 is kept smaller than Φ 0.2 mm, and is usually between Φ 0.1 and Φ 0.2 mm. Before the first connecting unit 1 is subjected to rivet pulling with the second connecting unit 2 and after the first connecting unit 1 is subjected to rivet pulling with the second connecting unit 2, the concentricity variation is smaller than phi 0.2 mm, that is, in consideration of the installation error between the first connecting unit 1 and the second connecting unit 2, the rivet pulling error between the first connecting unit 1 and the second connecting unit 2 and the like, the final preset error range needs to be controlled to be smaller than phi 0.4 mm, and the preset error range can be effectively met through the setting mode.
In the above arrangement, the second connecting unit 2 is matched with the locking limit of the internal thread part 11 and the external thread part 21 under the horizontal rightward riveting force, so that the structure at the mounting groove of the first connecting unit 1 can outwards complete the directional bulging deformation of the whole circumference, thereby ensuring that the concentricity variation of the rivet nut before and after the rivet action is within the preset range.
In the above arrangement, the positioning portion 22 and the external thread portion 21 may be integrally formed, and the positioning portion 22 may be screwed to the screw member. The alternatives described above may be adapted as desired and are not limited or discussed herein.
Referring again to fig. 4, in another embodiment, the female screw portion 11 of the clinching nut extends in the axial direction to a second end face 14 of the clinching nut, the second end face 14 being disposed opposite the first end face 13. The positioning part 22 is firstly embedded in the mounting groove, and the second connecting unit 2 can be inserted into the first connecting unit 1 from left to right in the horizontal plane, so that the internal thread part 11 is locked with the external thread part 21, and the positioning part 22 is penetrated by the second connecting unit 2. It is worth noting that when the second connection unit 2 is inserted into the first connection unit 1 and the first connection unit 1 is before being riveted with the second connection unit 2, the preset range of concentricity between the first connection unit 1 and the second connection unit 2 is kept smaller than 0.2 mm, and is usually between 0.1 mm and 0.2 mm. Before the first connecting unit 1 is subjected to rivet pulling with the second connecting unit 2 and after the first connecting unit 1 is subjected to rivet pulling with the second connecting unit 2, the concentricity variation is smaller than phi 0.2 mm, that is, in consideration of the installation error between the first connecting unit 1 and the second connecting unit 2, the rivet pulling error between the first connecting unit 1 and the second connecting unit 2 and the like, the final preset error range needs to be controlled to be smaller than phi 0.4 mm, and the preset error range can be effectively met through the setting mode.
In the above arrangement, the second connecting unit 2 may be a screw member having an external thread portion 21. The second positioning part 22 can also be matched with the internal thread part 11 and the external thread part 21 to be locked and limited under the horizontal rightward riveting force, so that the structure at the mounting groove of the first connecting unit 1 can outwards complete the directional bulging deformation of the whole circumference, and the concentricity variation of the rivet nut before and after the riveting action is within a preset range.
In the present embodiment, the second connecting means 2 is inserted into the positioning portion 22 and abuts against the inner wall of the positioning portion 22. In the arrangement mode, in the rivet pulling process, the second connecting unit 2 can also support the positioning part 22, and the deformation of the positioning part 22 is avoided or reduced by using a mechanical limiting mode, so that the first connecting unit 1 can effectively complete bulging deformation.
In the present embodiment, a flange portion 15 is formed at the first end surface 13 (left end surface) of the first connection unit 1 so as to protrude outward, and a side wall of the positioning portion 22 can abut against a side wall of the flange portion 15. The flange part 15 can play a reference role in mounting the positioning part 22, so that the mounting accuracy of the positioning part 22 is ensured; on the other hand, in the second attachment member in the form of a screw member, when it is used in conjunction with an external device (a riveter), the rivet head of the external device can abut against the flange portion 15, and the second attachment member can be attached to the second connection unit 2 with a good reference.
In the present embodiment, a spline portion 16 is provided on an outer side wall of the first connection unit 1 near the flange portion 15. In the processes of production, transportation and the like of the first connection unit 1, the corresponding structural thickness of the installation groove portion 12 of the first connection unit 1 is thin, and the first connection unit 1 is easily deformed under the action of external force, so that the first connection unit 1 is scrapped in advance without being butted with the second connection unit 2. Through the arrangement of the spline part 16, a certain reinforcing effect can be achieved on the structure at the position, and the effectiveness of the subsequent butt joint of the first connecting unit 1 and the second connecting unit 2 is improved.
The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (8)
1. The utility model provides a mechanism is riveted to pulling that concentricity is good which comprises:
a first connection unit including an internal thread portion and an attachment groove portion that are provided in parallel in an axial direction;
a second connecting unit which can be inserted into the first connecting unit and includes male screw portions arranged in parallel in an axial direction and positioning portions engaged with the mounting groove portions;
when the second connecting unit is inserted into the first connecting unit, a gap between the outer side wall of the positioning part of the second connecting unit and the mounting groove part of the first connecting unit is located in a preset gap range;
and the concentricity variation of the first connecting unit before being riveted with the second connecting unit and after being riveted with the second connecting unit is less than phi 0.1 mm.
2. A blind rivet apparatus having good concentricity according to claim 1, wherein the second coupling unit has a variation in concentricity between 0.05 and 0.1 before and after insertion of the first coupling unit.
3. The blind rivet mechanism with good concentricity according to claim 1, wherein the positioning portion is integrally formed with the male screw portion, and the positioning portion can be fitted into the fitting groove portion after the second coupling unit is inserted from the first end face of the first coupling unit.
4. The blind rivet mechanism of claim 3, wherein the female screw portion extends in an axial direction to the second end face of the first connecting unit so that the second connecting unit can be inserted from the second end face of the first connecting unit.
5. The blind rivet mechanism with good concentricity according to claim 1, wherein a flange part is formed at the first end face of the first connecting unit in a protruding manner, and a side wall of the positioning part can abut against a side wall of the flange part.
6. The blind rivet apparatus of claim 5, wherein a spline portion is provided on an outer side wall of the first coupling unit adjacent to the flange portion.
7. The blind rivet apparatus of claim 6, wherein the spline portion is disposed to correspond to the mounting groove portion.
8. The blind rivet mechanism with good concentricity according to claim 1, wherein the positioning part is slidably fitted over the external threaded part or is screw-locked to the external threaded part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023316456.9U CN214367179U (en) | 2020-12-31 | 2020-12-31 | Rivet pulling mechanism with good concentricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023316456.9U CN214367179U (en) | 2020-12-31 | 2020-12-31 | Rivet pulling mechanism with good concentricity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214367179U true CN214367179U (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023316456.9U Active CN214367179U (en) | 2020-12-31 | 2020-12-31 | Rivet pulling mechanism with good concentricity |
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| CN (1) | CN214367179U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114688137A (en) * | 2020-12-31 | 2022-07-01 | 宾科精密部件(中国)有限公司 | Rivet pulling mechanism with good concentricity |
-
2020
- 2020-12-31 CN CN202023316456.9U patent/CN214367179U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114688137A (en) * | 2020-12-31 | 2022-07-01 | 宾科精密部件(中国)有限公司 | Rivet pulling mechanism with good concentricity |
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