CN215058770U - Self-centering nut assembly and test trolley - Google Patents
Self-centering nut assembly and test trolley Download PDFInfo
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- CN215058770U CN215058770U CN202120635897.0U CN202120635897U CN215058770U CN 215058770 U CN215058770 U CN 215058770U CN 202120635897 U CN202120635897 U CN 202120635897U CN 215058770 U CN215058770 U CN 215058770U
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 230000000903 blocking effect Effects 0.000 claims description 10
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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Abstract
The utility model discloses a from centering nut component and test trolley, include: the self-centering nut is provided with a connecting part and a guide part, the connecting part is provided with a screw hole, the guide part is provided with a guide hole with an outward-expanded end part, and the screw hole is butted with the guide hole to form a hole structure penetrating through the self-centering nut; the nut box comprises a box body and a cover plate, the cover plate is connected with the box body and restrains the self-centering nut inside the nut box, and the nut box is provided with a through hole for a bolt to pass through; and the limiting structure is matched with the self-centering nut, so that the self-centering nut can freely move within a certain range perpendicular to the plane area of the hole structure but cannot rotate. The utility model discloses can freely remove in the nut box under bolt pressure from the centering nut to absorb bolt position error, when the nut need be screwed, limit structure can guarantee again that the self-centering nut can not rotate, finally realizes that the high-speed fit of bolt and nut is connected, and is very convenient.
Description
Technical Field
The utility model is used for the connecting piece field especially relates to a from centering nut component and test trolley.
Background
Intelligent power control unit, english name: intelligentingpowerunit, abbreviated IPU, which includes: the power battery and management system, motor controller, DC/DC converter, heat dissipating system and other parts belong to the special parts of hybrid electric vehicle. When the IPU carries out the gas tightness and detects, need screw up two bolts in the middle part, compress tightly and be fixed in the platform truck with the upper and lower drain pan of IPU through the bolt on, guarantee the casing leakproofness. The position of the IPU on the trolley is not very accurate, two persons are required to cooperate to complete nut alignment and fastening before detection, the operation is time-consuming and labor-consuming, and the operation efficiency is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a from centering nut component and test trolley.
The utility model provides a technical scheme that its technical problem adopted is:
in a first aspect, a self-centering nut assembly, comprising:
the self-centering nut is provided with a connecting part and a guide part, the connecting part is provided with a screw hole, the guide part is provided with a guide hole with an outward-expanded end part, and the screw hole is butted with the guide hole to form a hole structure penetrating through the self-centering nut;
the nut box comprises a box body and a cover plate, the cover plate is connected with the box body and restrains the self-centering nut inside the nut box, and the nut box is provided with a through hole for a bolt to pass through;
and the limiting structure is matched with the self-centering nut, so that the self-centering nut can freely move within a certain range perpendicular to the plane area of the hole structure but cannot rotate.
With reference to the first aspect, in certain implementation manners of the first aspect, the cover plate is disposed at the top of the box body, the via holes include first via holes disposed on the cover plate and second via holes disposed at the bottom of the box body, the aperture of the first via holes is larger than that of the second via holes, the guide holes are disposed on the inner side of the first via holes, and the screw holes are disposed on the inner side of the second via holes.
With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the limiting structure includes a plurality of limiting blocking pieces disposed at an inner side of the bottom of the box body, the limiting blocking pieces are distributed around the second via hole, a plurality of limiting grooves are disposed at a bottom of the self-centering nut, and the limiting blocking pieces are matched with the limiting grooves to enable the self-centering nut to freely move within a certain range of the bottom surface of the box body but cannot rotate.
With reference to the first aspect and the foregoing implementations, in certain implementations of the first aspect, the limiting member includes an elastic member provided between the self-centering nut and a nut box, and the elastic member causes the self-centering nut to abut against the nut box in the direction of the hole structure.
With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the elastic component includes a spring plate disposed between the bottom of the self-centering nut and the box body, and the spring plate is provided with a third via hole.
With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the cover plate is in threaded connection with the box body.
With reference to the first aspect and the foregoing implementations, in certain implementations of the first aspect, the vertical cross-section of the guide hole is tapered, circular arc, or parabolic.
In a second aspect, the test trolley comprises a frame and travelling wheels, wherein the frame is provided with at least two self-centering nut assemblies in any one implementation manner of the first aspect.
One of the above technical solutions has at least one of the following advantages or beneficial effects: the utility model provides a can absorb bolt position error's nut assembly, the guide part from the centering nut has a guiding hole, pass through guiding hole and bolt cooperation from the centering nut, can be under bolt pressure free movement in the nut box, thereby absorb bolt position error, when the nut needs to be screwed, limit structure can guarantee again that the self-centering nut can not rotate, finally realize the snap-fit connection of bolt and nut, install this nut assembly to IPU test trolley on, can realize directly tightening the bolt by one person's operation and accomplish the fastening of IPU end cover, and is very convenient. Of course, the utility model is also suitable for the occasions that the precision of other bolt positions is not enough.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural view of one embodiment of a self-centering nut assembly of the present invention;
FIG. 2 is a cross-sectional view taken at A-A in FIG. 1;
FIG. 3 is a cross-sectional view of one embodiment of the self-centering nut shown in FIG. 1;
FIG. 4 is a bottom view of the self-centering nut of the embodiment shown in FIG. 1;
FIG. 5 is a top view of the cartridge of one embodiment shown in FIG. 1;
FIG. 6 is a schematic structural view of yet another embodiment of the self-centering nut assembly of the present invention;
fig. 7 is a schematic structural view of an embodiment of the test trolley of the present invention.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the present invention, if there is a description of directions (up, down, left, right, front and back), it is only for convenience of description of the technical solution of the present invention, and it is not intended to indicate or imply that the technical features indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the utility model, the meaning of a plurality of is one or more, the meaning of a plurality of is more than two, and the meaning of more than two is understood as not including the number; the terms "above", "below", "within" and the like are understood to include the instant numbers. In the description of the present invention, if there is any description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the present invention, unless otherwise explicitly defined, the terms "set", "install", "connect", and the like are to be understood in a broad sense, and for example, may be directly connected or may be indirectly connected through an intermediate medium; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The technical skill in the art can reasonably determine the specific meaning of the above words in the present invention by combining the specific contents of the technical solution.
Fig. 1 and 6 show a reference direction coordinate system of an embodiment of the present invention, and the following describes an embodiment of the present invention with reference to directions shown in fig. 1 and 6.
Referring to fig. 1 and 3, the embodiment of the utility model provides a from centering nut assembly, include from centering nut 1, nut box 2 and limit structure, be equipped with connecting portion 11 and guide part 12 from centering nut 1, connecting portion 11 and guide part 12 are connected and are formed integrative structure, and connecting portion 11 is equipped with screw 13, and screw 13 is used for realizing locking with bolt threaded connection. The guide portion 12 is provided with a flared end guide hole 14 for guiding the bolt into the rear threaded hole 13. The screw hole 13 and the guide hole 14 are butted to form a hole structure penetrating through the self-centering nut 1. The guide hole 14 is positioned at the inlet side of the screw hole 13, and the caliber of the opening end of the guide hole 14 is larger than that of the screw hole 13, so that the bolt can conveniently enter the hole structure of the self-centering nut 1.
The nut box 2 comprises a box body 21 and a cover plate 22, the cover plate 22 is connected with the box body 21, the self-centering nut 1 is constrained inside the nut box 2, the nut box 2 is provided with a through hole for a bolt to pass through, the through hole corresponds to the hole structure of the self-centering nut 1, the nut box 2 provides protection, support and limiting for the self-centering nut 1, and the self-centering nut 1 can be installed on equipment such as an IPU (intelligent power unit) test trolley along with the nut box 2. The limiting structure is arranged on the nut box 2 and matched with the self-centering nut 1, so that the self-centering nut 1 can freely move within a certain range perpendicular to the plane area of the hole structure but cannot rotate.
The embodiment of the utility model provides a can absorb bolt position error's nut assembly, guide portion 12 from centering nut 1 has a guiding hole 14, from centering nut 1 through guiding hole 14 and bolt cooperation, can be under bolt pressure free movement in nut box 2, thereby absorb bolt position error, when the nut needs to be screwed, limit structure can guarantee again that from centering nut 1 can not rotate, finally realize the quick fit connection of bolt and nut, install this nut assembly to IPU test trolley on, can realize directly tightening the bolt by one person's operation and accomplish the IPU end cover fastening, and is very convenient. Of course, the utility model is also suitable for the occasions that the precision of other bolt positions is not enough.
The self-centering nut 1 can be put into the nut box 2 through the opening of the box body 21, the cover plate 22 is used for closing the opening of the box body 21, the cover plate 22 can be connected to the top, the bottom or the side of the box body 21 according to the difference of the opening direction of the box body 21, the through hole of the nut box 2 can be arranged on the cover plate 22 and/or the box body 21, for example, in the embodiment shown in fig. 1 and 6, the cover plate 22 is arranged on the top of the box body 21, the through hole comprises a first through hole 23 arranged on the cover plate 22 and a second through hole 24 arranged on the bottom of the box body 21, the aperture of the first through hole 23 is larger than that of the second through hole 24, the guiding hole 14 is arranged inside the first through hole 23, and the screw hole 13 is arranged inside the second through hole 24. The bolt penetrates through the first through hole 23 and penetrates out of the second through hole 24, and threaded connection with the self-centering nut 1 is achieved.
In some embodiments, referring to fig. 1 to 5, the limiting structure includes a plurality of limiting blocking pieces 31 disposed at the inner side of the bottom of the box body 21, the plurality of limiting blocking pieces 31 are distributed around the second via holes 24, a plurality of limiting grooves 32 are disposed at the bottom of the self-centering nut 1, the limiting blocking pieces 31 are matched with the limiting grooves 32, and the depth of the limiting grooves 32 is greater than the size of the limiting blocking pieces 31, so that the self-centering nut 1 can move freely but cannot rotate within a certain range of the bottom surface of the box body 21.
The limiting member may also adopt other forms besides the structure form that the limiting stop piece 31 is matched with the limiting groove 32, for example, in some embodiments, referring to fig. 6, the limiting member includes an elastic member 33 arranged between the self-centering nut 1 and the nut box 2, the elastic member 33 enables the self-centering nut 1 to abut against the nut box 2 along the hole structure direction, and the self-centering nut 1 can freely move within a certain range of the bottom surface of the box body 21 but can not rotate in the bolt screwing process through the friction force of the self-centering nut 1 and the nut box 2.
The elastic member 33 may be a spring or a spring plate, for example, in some embodiments shown in fig. 6, the elastic member 33 includes a spring plate disposed between the bottom of the self-centering nut 1 and the box body 21, the spring plate is provided with a third through hole, the spring plate applies an upward force to the self-centering nut 1, the top of the self-centering nut 1 abuts against the nut box 2, and a friction fit is achieved, so that the self-centering nut 1 can move freely within a certain range of the bottom surface of the box body 21, but cannot rotate during the screwing process of the bolt.
In some embodiments, the cover 22 is threaded onto the box 21 to facilitate replacement of the internal self-centering nut 1.
Referring to fig. 3, the guide hole 14 is used for adjusting the position of the self-centering nut 1 during the entering stage of the bolt, and finally the bolt is accurately matched with the screw hole 13, and correspondingly, the vertical section of the guide hole 14 can be designed to be conical, circular arc or parabolic.
Referring to fig. 7, an embodiment of the present invention further provides a test trolley, which includes a frame 41 and a traveling wheel 42, wherein the frame 41 is provided with at least two self-centering nut assemblies implemented in any one of the first aspects. For example, when the IPU performs air tightness detection, the position of the IPU on a trolley is not very accurate, a middle bolt firstly penetrates through the IPU, then the middle bolt is matched with a guide hole 14 of a self-centering nut 1 with a larger opening, the self-centering nut 1 can freely move in a nut box 2 under the pressure of the bolt, after the self-centering nut is accurately positioned, the self-centering nut is screwed into a screw hole 13, finally, the bolt is directly tightened by one person to finish the fastening of an IPU end cover, and the method is very convenient.
In the description herein, references to the description of the term "example," "an embodiment," or "some embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (8)
1. A self-centering nut assembly, comprising:
the self-centering nut is provided with a connecting part and a guide part, the connecting part is provided with a screw hole, the guide part is provided with a guide hole with an outward-expanded end part, and the screw hole is butted with the guide hole to form a hole structure penetrating through the self-centering nut;
the nut box comprises a box body and a cover plate, the cover plate is connected with the box body and restrains the self-centering nut inside the nut box, and the nut box is provided with a through hole for a bolt to pass through;
and the limiting structure is matched with the self-centering nut, so that the self-centering nut can freely move within a certain range perpendicular to the plane area of the hole structure but cannot rotate.
2. The self-centering nut assembly according to claim 1, wherein said cover plate is disposed at the top of said box body, said via holes comprise a first via hole disposed at said cover plate and a second via hole disposed at the bottom of said box body, the aperture of said first via hole is larger than the aperture of said second via hole, said pilot hole is located inside said first via hole, and said screw hole is located inside said second via hole.
3. The self-centering nut assembly according to claim 2, wherein the limiting structure comprises a plurality of limiting blocking pieces arranged on the inner side of the bottom of the box body, the plurality of limiting blocking pieces are distributed around the second via hole, the bottom of the self-centering nut is provided with a plurality of limiting grooves, and the limiting blocking pieces are matched with the limiting grooves, so that the self-centering nut can freely move within a certain range of the bottom surface of the box body but cannot rotate.
4. The self-centering nut assembly according to claim 2, wherein said stop member comprises a resilient member disposed between said self-centering nut and a nut box, said resilient member causing said self-centering nut to abut said nut box in said bore configuration direction.
5. The self-centering nut assembly according to claim 4, wherein said resilient member comprises a leaf spring disposed between said self-centering nut base and said cage, said leaf spring defining a third through hole.
6. The self-centering nut assembly according to claim 1, wherein said cover plate is threadably connected to said cage.
7. The self-centering nut assembly according to claim 1, wherein a vertical cross-section of said pilot hole is tapered, rounded or parabolic.
8. A test trolley comprising a frame and road wheels, the frame being provided with at least two self-centering nut assemblies as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120635897.0U CN215058770U (en) | 2021-03-29 | 2021-03-29 | Self-centering nut assembly and test trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120635897.0U CN215058770U (en) | 2021-03-29 | 2021-03-29 | Self-centering nut assembly and test trolley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215058770U true CN215058770U (en) | 2021-12-07 |
Family
ID=79151105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120635897.0U Expired - Fee Related CN215058770U (en) | 2021-03-29 | 2021-03-29 | Self-centering nut assembly and test trolley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215058770U (en) |
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2021
- 2021-03-29 CN CN202120635897.0U patent/CN215058770U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211207 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |