CN108448286B - Gap eliminating piece - Google Patents
Gap eliminating piece Download PDFInfo
- Publication number
- CN108448286B CN108448286B CN201810569258.1A CN201810569258A CN108448286B CN 108448286 B CN108448286 B CN 108448286B CN 201810569258 A CN201810569258 A CN 201810569258A CN 108448286 B CN108448286 B CN 108448286B
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- gap
- closing
- sections
- stress
- force
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- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 2
- 239000013013 elastic material Substances 0.000 claims description 2
- 230000008602 contraction Effects 0.000 abstract description 4
- 101700004678 SLIT3 Proteins 0.000 description 15
- 102100027339 Slit homolog 3 protein Human genes 0.000 description 15
- 230000008030 elimination Effects 0.000 description 7
- 238000003379 elimination reaction Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 206010067484 Adverse reaction Diseases 0.000 description 2
- 230000006838 adverse reaction Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
Abstract
The invention is applied to the technical field of connectors, and provides a clearance eliminating piece, which comprises: the first gap closing seams and the second gap closing seams are alternately arranged in sequence; the first gap-closing slit and the second gap-closing slit are respectively formed from both ends of the gap-eliminating member, are opened in the axial direction of the gap-eliminating member, do not penetrate the gap-eliminating member in the axial direction, but penetrate the side wall of the gap-eliminating member in the radial direction, and have overlapping portions in the axial direction. The clearance eliminating piece provided by the invention can realize tight fit of the hole shafts under the condition of not passing through interference fit, and can make up for the clearance caused by thermal expansion and cold contraction, so that the hole shafts are always kept in a fastening state.
Description
Technical Field
The invention relates to the technical field of connectors, in particular to a clearance eliminating piece.
Background
In the case of electrical or other mechanical connections, hole-shaft mating is often encountered, and in the prior art, an interference fit is typically used to mate the holes and shafts, however, there are many drawbacks to the interference fit, such as: 1. the precision requirements on the matched holes and shafts are high, otherwise, the matched holes and/or shafts are excessively deformed or even cracked due to the excessive interference, or the matched structure is loosened due to the weak strength of the interference due to the too small interference; 2. even if the hole shaft is properly matched initially, gaps are likely to be generated in the using process of Kong Zhoujian, and once the gaps are generated, the gaps cannot be eliminated, so that the matched structure is easy to release, for example, if the hole shaft is made of materials with different thermal expansion coefficients under the condition of thermal expansion and contraction, the gaps are likely to be generated; even if the hole shafts are made of the same material, gaps are likely to be generated due to different heating and heat dissipation between the holes and the shafts during heating or cooling (particularly, in the electric connection occasion, the shapes and the sizes of the hole shafts are different, and the heat effect generated by current is different).
Disclosure of Invention
The invention aims to provide a clearance eliminating piece applied to hole shaft fit connection, which aims to realize the tight fit between hole shafts without excessively hard fit and avoid the clearance loosening generated after the hole shaft fit connection.
The technical scheme of the invention is as follows: a clearance elimination member for a tight-fit connection of a bore, a shaft, the clearance elimination member comprising:
a body;
a through hole penetrating the body in an axial direction of the body;
the first gap seam and the second gap seam are alternately arranged on the side wall of the body;
the first gap closing seam and the second gap closing seam are respectively started from two ends of the body and are opened along the axial extension;
the first gap-closing slit and the second gap-closing slit do not penetrate the body in the axial direction;
the first gap-closing slit and the second gap-closing slit penetrate through the side wall of the body in the radial direction;
the first gap-closing slit is not communicated with the second gap-closing slit;
the first gap-closing slit and the second gap-closing slit have overlapping portions in the axial direction.
Further, in the circumferential direction of the gap eliminator, the adjacent first gap-closing slits have an equal angle to the second gap-closing slits.
Further, the first gap-closing slit is disposed in parallel with the second gap-closing slit.
Further, the body is divided into at least two sections along the axial direction, including:
a first stress section for receiving the force deformation of the inner wall of the hole;
the second stress section is used for receiving the force application deformation of the outer wall of the shaft;
the first stress section and the second stress section can shrink or expand in the diameter direction and the circumferential direction;
the first stress section and the second stress section are not forced by the inner wall of the hole and the outer wall of the shaft simultaneously before being subjected to stress deformation.
Further, the number of at least one of the first stress section and the second stress section is greater than 1, and at least one of the second stress sections is located between the two first stress sections or at least one of the first stress sections is located between the two second stress sections.
Further, the body is divided into three sections, wherein the number of the first stress sections is 1, and the number of the second stress sections is 2.
Further, the first stress section is a cylindrical ring, and the two second stress sections are conical rings with the same specification;
wherein, in the direction away from the cylindrical ring, the cross-sectional radius of the conical ring gradually decreases.
Further, the body is divided into three sections, wherein the number of the first stress sections is 2, and the number of the second stress sections is 1.
Further, the second stress section is a cylindrical ring, and the two first stress sections are conical rings with the same specification;
wherein the cross-sectional radius of the conical ring gradually increases in a direction away from the cylindrical ring.
Further, the first gap-closing slit and the second gap-closing slit have the same length and are each greater than half the length of the gap-eliminating member.
The beneficial effects of the invention are as follows:
(1) When the gap eliminating piece is assembled with the hole and the shaft, the gap eliminating piece can be stressed to shrink at the gap closing seam in the circumferential direction (or be stretched at the two sides of the gap closing seam) so as to fill the gap when the hole and the shaft are matched, so that tight matching between the hole and the shaft can be realized without interference fit, the requirement on the machining precision of the hole and the shaft is reduced, the production cost is reduced, and meanwhile, because the gap eliminating piece is always elastically contacted with the hole and the shaft, the gap eliminating piece can compensate adverse reaction caused by thermal expansion and cold contraction, and the hole and the shaft can be always kept in a fastening state.
(2) The gap eliminating piece provided by the invention is arranged in a sectional mode, so that the gap eliminating piece has stronger gap eliminating capability in the process of being matched with the hole shaft, and the tight fit of the hole shaft is firmer.
(3) The gap eliminating piece provided by the invention adopts a dumbbell-shaped design with two large ends and a small middle or a drum-shaped design with two small ends and a large middle, so that the stress of the gap eliminating piece is more balanced when the gap eliminating piece is matched with a hole and a shaft, the installation is more stable, and a user can select the gap eliminating piece of a corresponding type according to the actual use condition, thereby facilitating the matched installation with the hole and the shaft.
Drawings
FIG. 1 is a schematic view of the overall structure of a gap eliminating member according to the present invention;
FIG. 2 is a schematic side view of a gap remover according to the present invention;
FIG. 3 is a schematic view of the overall structure of another gap eliminating member provided by the present invention;
FIG. 4 is a schematic side view of another clearance elimination element provided by the present invention;
FIG. 5 is a schematic view showing the overall structure of a third gap eliminating member according to the present invention;
fig. 6 is a schematic view of a clearance elimination element provided by the invention and assembled with a hole shaft.
Detailed Description
The invention will be further described in detail below with reference to the accompanying drawings:
the gap eliminating member provided by the invention is made of elastic materials, can be made of elastic metal materials, can be made of elastic plastics and the like, and is preferably made of the same material as the whole gap eliminating member for the convenience of production.
As shown in fig. 1 to 5, the clearance eliminating member provided by the present invention is used for tight-fitting connection of a hole and a shaft, and comprises: a body 1; a through hole 2 penetrating the body 1 in an axial direction of the body 1 (i.e., in a length direction of the body 1); first gap-closing slits 3 and second gap-closing slits 4 alternately provided at the side wall of the body 1; wherein, the first gap closing seam 3 and the second gap closing seam 4 are respectively started from two ends of the body 1 and are opened along the axial extension; in addition, neither the first gap-closing slit 3 nor the second gap-closing slit 4 penetrates the body 1 in the axial direction; the first gap-closing slit 3 and the second gap-closing slit 4 each penetrate the side wall of the body 1 in the radial direction, i.e., the first gap-closing slit 3 and the second gap-closing slit 4 each communicate with the through hole 2; furthermore, the first gap-closing slit 3 is not communicated with the second gap-closing slit 4; however, the first gap-closing slit 3 and the second gap-closing slit 4 have overlapping portions in the axial direction. In the present invention, "the first gap-filling slit is not communicated with the second gap-filling slit" means that the first gap-filling slit 3 and the second gap-filling slit 4 cannot be communicated with each other in a crossing manner, i.e., the first gap-filling slit 3 and the second gap-filling slit 4 are combined to form an opening penetrating the side wall of the body 1 in the axial direction. "the first gap-closing slit 3 and the second gap-closing slit 4 have overlapping portions in the axial direction" means that the first gap-closing slit 3 and the second gap-closing slit 4 pass through a certain region of the side wall of the body 1 at the same time, and the gap-closing slit portions located in the region are overlapping portions of the first gap-closing slit 3 and the second gap-closing slit 4, for example, as shown in fig. 2, when the lengths of the first gap-closing slit 3 and the second gap-closing slit 4 are equal and are each greater than half the length of the gap-eliminating member, the region between the one end M of the first gap-closing slit 3, which does not penetrate the loose ring, and the one end N of the second gap-closing slit 4, which does not penetrate the gap-eliminating member, is the region through which both pass at the same time, and the gap-closing slit located in the region is the overlapping portion of the two, that is, the Mn-segment-gap-closing slit is the overlapping portion of the first gap-closing slit 3 and the second gap-closing slit 4.
The gap eliminating piece provided by the invention is of an annular structure on the whole, the outer wall of the annular body 1 can be in contact with a hole, the inner wall (namely, the side wall of the through hole 2) can be in contact with a shaft, and as the side wall of the body 1 is provided with the first gap-closing seam 3 and the second gap-closing seam 4, the body 1 can shrink (or be stretched to two sides of the gap-closing seam) at the circumferential gap-closing seam after being stressed, and the gap brought by different sizes during hole-shaft matching can be filled, so that the tight matching of the hole and the shaft can be realized, the tight matching between the hole and the shaft can be realized without the interference matching of the hole and the shaft, the requirement on the machining precision of the hole and the shaft is reduced, the production efficiency is improved, and the production cost is reduced. In addition, after the clearance eliminating piece, the hole and the shaft are tightly matched, the clearance eliminating piece is in a contracted or expanded state, so that the clearance eliminating piece can compensate adverse reaction caused by thermal expansion and cold contraction, and the clearance eliminating piece, the hole and the shaft are always in tight contact, and the hole and the shaft are always in a fastening state.
In addition, the gap eliminating piece provided by the invention has the advantages that the number of the first gap closing slits 3 and the second gap closing slits 4 can be the same, and the number of the first gap closing slits and the second gap closing slits can be 1, 2 or more; it can be understood that the number of the first gap closing slits 3 and the second gap closing slits 4 can be different, but as long as the gap closing slits 4 are alternately arranged, the whole gap closing member can deform after being stressed, so that the hole and the shaft are always kept in a stressed state, and further the fastening and anti-loosening effects are achieved.
In this embodiment, all the gap-filling slits (i.e., the sum of the first gap-filling slits and the second gap-filling slits) are uniformly formed on the side wall of the body 1, i.e., the angles between the adjacent first gap-filling slits 3 and the adjacent second gap-filling slits 4 are the same in the circumferential direction of the gap-removing member, so that the deformation amount of the gap-removing member in the circumferential direction is uniform, and the force applied to the hole and the shaft after the deformation of the gap-removing member is uniform, thereby avoiding damage to the hole and the shaft caused by uneven stress. Further, the first gap closing slit 3 and the second gap closing slit 4 are arranged in parallel, that is, the included angle between the adjacent first gap closing slit 3 and second gap closing slit 4 is zero degrees, so that the deformation of the gap eliminating piece in the circumferential direction is more uniform. Furthermore, the gap eliminating member provided by the invention has the advantages that the lengths of the first gap closing seam 3 and the second gap closing seam 4 are equal, the wall thicknesses of the gap eliminating member are also equal, and the gap eliminating member can be divided into two symmetrical parts by a plane perpendicular to the axis of the gap eliminating member, so that the deformation amount of the gap eliminating member can be further uniform.
In this embodiment, the body 1 is divided into at least two sections along the axial direction, including: a first stress section 11 for contacting with the inner wall of the hole to receive the force applied by the inner wall of the hole and generate deformation, and a second stress section 12 for contacting with the outer wall of the shaft to receive the force applied by the outer wall of the shaft and generate deformation; wherein, the first stress section 11 and the second stress section 12 can shrink or expand in the diameter direction and the circumferential direction; moreover, the first stress section 11 and the second stress section 12 are not forced by the inner wall of the hole and the outer wall of the shaft before deformation, as shown in fig. 6, the distances between the outer wall and the inner wall of the first stress section and the axis are larger than those between the outer wall and the inner wall of the second stress section, so that when the gap eliminating piece, the hole and the shaft are matched, the first stress section is only in contact with the hole wall and is only in contact with the shaft (namely only in contact with the inward pressure A of the hole), and the second stress section is only in contact with the shaft and is only in contact with the outward pressure B of the shaft, thereby ensuring that the gap eliminating piece can be forced to deform in the matching of the hole and the shaft, and ensuring that the deformation amount is larger, ensuring that the gap eliminating piece has stronger capacity of filling Kong Zhoujian gaps, and ensuring firmness after the tight matching of the hole and the shaft.
As shown in fig. 5, in a specific implementation manner of this embodiment, the body is divided into two sections, the number of the first stress section 11 and the second stress section 12 is 1, where the first stress section 11 is a conical ring, the second stress section 12 is a cylindrical ring, and in a direction away from the cylindrical ring, the radius of the cross section of the conical ring gradually increases, that is, the whole gap eliminating member has a horn-shaped structure with a small end and a large end.
In this embodiment, the number of at least one of the first stress sections 11 and the second stress sections 12 is greater than 1, and at least one of the second stress sections 12 is located between the two first stress sections 11 or at least one of the first stress sections 11 is located between the two second stress sections 12, so that the stress of the gap eliminating member can be balanced and the installation is stable.
As shown in fig. 1 and 2, in a specific implementation manner of this embodiment, the body 1 is divided into three sections, where the number of first stress sections 11 is 1, and the number of second stress sections 12 is 2, and it should be understood that the three sections are connected in sequence, and the first stress section 11 is located between the two second stress sections 12. Further, in the present embodiment, the first stress section 11 is a cylindrical ring, and the two second stress sections 12 are both conical rings of the same specification, wherein the cross-sectional radius of the conical rings is gradually reduced in the direction away from the cylindrical rings, that is, the whole gap eliminating member has a drum-shaped structure with small ends and large middle.
As shown in fig. 3 and 4, in another implementation manner of the present embodiment, the body 1 is also divided into three sections, wherein the number of the first stress sections 11 is 2, and the number of the second stress sections 12 is 1. Further, the second stress section 12 is a cylindrical ring, and the two first stress sections 11 are conical rings with the same specification; the cross section radius of the conical ring gradually increases in the direction away from the cylindrical ring, namely, the whole gap eliminating piece is of a dumbbell-shaped structure with two large ends and a small middle.
The drum-like and dumbbell-like designs in the above embodiments are two common designs of gap-eliminating members for ease of user selection and ease of installation. For example, when the aperture is smaller than the outer diameter of a certain cross section of the first stress section (especially when the diameter of the shaft is smaller than the inner diameter of a cross section of the second stress section), a drum-shaped clearance eliminating piece is preferably used, and when the device is used, the drum-shaped clearance eliminating piece is sleeved on the shaft firstly and then is filled in the hole; when the diameter of the shaft is smaller than the inner diameter of a certain cross section of the second stress section (especially when the diameter of the hole is larger than the outer diameter of the cross section of the first stress section), a dumbbell-shaped clearance elimination member is preferably used, and the dumbbell-shaped clearance elimination member is firstly arranged in the hole when in use, and then the shaft is inserted into the hole of the clearance elimination member.
In addition, in the above embodiments, at the junction of the conical ring and the cylindrical ring, the inner diameter and the outer diameter of the end face of the conical ring are respectively equal to the inner diameter and the outer diameter of the cylindrical ring. In addition, in the embodiment, the clearance eliminating pieces are designed in two or three sections, so that the tight fit of the holes and the shafts can be ensured, the whole clearance eliminating piece is simple in structure, and the material cost is saved.
The foregoing description is only of the preferred embodiments of the invention, and all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (9)
1. A gap eliminator for a tight-fitting connection of a bore, shaft, the gap eliminator comprising: a body;
a through hole penetrating the body in an axial direction of the body;
the first gap seam and the second gap seam are alternately arranged on the side wall of the body;
the first gap closing seam and the second gap closing seam are respectively started from two ends of the body and are opened along the axial extension;
the first gap-closing slit and the second gap-closing slit do not penetrate the body in the axial direction;
the first gap-closing slit and the second gap-closing slit penetrate through the side wall of the body in the radial direction;
the first gap-closing slit is not communicated with the second gap-closing slit;
the first gap-closing slit and the second gap-closing slit have overlapping portions in the axial direction;
the gap eliminating piece is made of elastic materials;
the body is divided into at least two sections along the axial direction, including:
a first stress section for receiving the force deformation of the inner wall of the hole;
the second stress section is used for receiving the force application deformation of the outer wall of the shaft;
the first stress section and the second stress section can shrink or expand in the diameter direction and the circumferential direction;
the first stress section and the second stress section are not forced by the inner wall of the hole and the outer wall of the shaft simultaneously before being subjected to stress deformation.
2. The gap remover of claim 1, wherein adjacent first gap-closing slits have equal angles with respect to the second gap-closing slits in the circumferential direction of the gap remover.
3. The gap remover of claim 2, wherein the first gap-closing slit is disposed in parallel with the second gap-closing slit.
4. The gap remover of claim 1, wherein the first gap-closing slit is equal in length to the second gap-closing slit.
5. The gap remover of claim 4, wherein at least one of the first force-receiving section and the second force-receiving section has a number greater than 1 and at least one of the second force-receiving sections is located between the two first force-receiving sections or at least one of the first force-receiving sections is located between the two second force-receiving sections.
6. The gap remover of claim 5, wherein the body is divided into three sections, wherein the number of first stress sections is 1 and the number of second stress sections is 2.
7. The gap remover of claim 6, wherein the first force-bearing section is a cylindrical ring and both the second force-bearing sections are conical rings of the same gauge;
wherein, in the direction away from the cylindrical ring, the cross-sectional radius of the conical ring gradually decreases.
8. The gap remover of claim 5, wherein the body is divided into three sections, wherein the number of first stress sections is 2 and the number of second stress sections is 1.
9. The gap remover of claim 8, wherein the second force-bearing section is a cylindrical ring and both the first force-bearing sections are conical rings of the same gauge; wherein the cross-sectional radius of the conical ring gradually increases in a direction away from the cylindrical ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810569258.1A CN108448286B (en) | 2018-06-05 | 2018-06-05 | Gap eliminating piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810569258.1A CN108448286B (en) | 2018-06-05 | 2018-06-05 | Gap eliminating piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108448286A CN108448286A (en) | 2018-08-24 |
| CN108448286B true CN108448286B (en) | 2023-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810569258.1A Active CN108448286B (en) | 2018-06-05 | 2018-06-05 | Gap eliminating piece |
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| Country | Link |
|---|---|
| CN (1) | CN108448286B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019131791B8 (en) * | 2019-11-25 | 2022-12-15 | Hanon Systems | Arrangements for connecting electrical connections for a device for driving a compressor and methods for assembling the arrangements and device for driving a compressor and use of the device |
| CN111271384A (en) * | 2020-01-15 | 2020-06-12 | 上海克兰传动设备有限公司 | Wind power locking disc |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1618148A (en) * | 2002-01-18 | 2005-05-18 | Adc电信股份有限公司 | Triaxial connector including cable clamp |
| CN101288206A (en) * | 2005-07-02 | 2008-10-15 | 泰瑞达公司 | Connector-to-pad printed circuit board translator and method of fabrication |
| DE102009046150A1 (en) * | 2009-10-29 | 2011-05-05 | Robert Bosch Gmbh | Contact testing device for starters |
| CN106877040A (en) * | 2017-03-22 | 2017-06-20 | 张逸菲 | Fastening current socket in reed pipe internal-welded type |
| CN208797224U (en) * | 2018-06-05 | 2019-04-26 | 深圳乔合里科技股份有限公司 | A kind of gap elimination part |
-
2018
- 2018-06-05 CN CN201810569258.1A patent/CN108448286B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1618148A (en) * | 2002-01-18 | 2005-05-18 | Adc电信股份有限公司 | Triaxial connector including cable clamp |
| CN101288206A (en) * | 2005-07-02 | 2008-10-15 | 泰瑞达公司 | Connector-to-pad printed circuit board translator and method of fabrication |
| DE102009046150A1 (en) * | 2009-10-29 | 2011-05-05 | Robert Bosch Gmbh | Contact testing device for starters |
| CN106877040A (en) * | 2017-03-22 | 2017-06-20 | 张逸菲 | Fastening current socket in reed pipe internal-welded type |
| CN208797224U (en) * | 2018-06-05 | 2019-04-26 | 深圳乔合里科技股份有限公司 | A kind of gap elimination part |
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| Publication number | Publication date |
|---|---|
| CN108448286A (en) | 2018-08-24 |
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