CN108980184B - Fixing device and car - Google Patents
Fixing device and car Download PDFInfo
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- CN108980184B CN108980184B CN201811049298.XA CN201811049298A CN108980184B CN 108980184 B CN108980184 B CN 108980184B CN 201811049298 A CN201811049298 A CN 201811049298A CN 108980184 B CN108980184 B CN 108980184B
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- gear nut
- locking
- block
- nut
- ratchet assembly
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- 230000007246 mechanism Effects 0.000 claims abstract description 29
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 4
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 3
- 235000011613 Pinus brutia Nutrition 0.000 description 3
- 241000018646 Pinus brutia Species 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
- F16B37/041—Releasable devices
- F16B37/043—Releasable devices with snap action
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a fixing device and an automobile, relates to the technical field of mechanical devices, and solves the problems that nuts for fixing a power battery pack cannot be replaced due to the fact that nuts are welded on a frame in the prior art, and the fixing effect is poor when the nuts are used for exceeding the use period. The fixing device comprises a bolt, a gear nut, a locking mechanism and a base for fixing the locking mechanism, wherein the base is fixed on a frame, the base comprises a supporting portion for supporting the gear nut and a piece changing portion for disassembling the gear nut, the supporting portion is communicated with the piece changing portion, the locking mechanism is used for locking the gear nut assembled on the supporting portion, and the bolt and the locked gear nut are connected with each other through threads to fix the power battery pack. The automobile comprises the fixing device provided by the technical scheme.
Description
Technical Field
The invention relates to the technical field of mechanical devices, in particular to a fixing device and an automobile.
Background
With the development of social economy and the improvement of human energy conservation and environmental protection consciousness, the electric automobile as a new energy automobile becomes a direction of automobile development in the future. Among them, energy storage systems of electric vehicles, for example: batteries are a critical component of electric vehicles. At present, the charging time of the battery of the electric automobile is generally longer, and the endurance mileage is relatively shorter, which becomes a main factor for restricting the popularization of the electric automobile. On the premise that the prior battery technology is difficult to break through greatly, the replacement of the battery pack becomes a main way for solving the problem of the continuous voyage of the electric automobile. Namely, when the battery of the electric automobile is insufficient, a fully charged battery pack can be directly replaced at the power exchange station, so that the driving range is prolonged.
As is known, the battery pack of an electric automobile has large volume and heavy weight, and the running safety of the automobile can be ensured only by firmly installing the battery pack on a frame; the prior art adopts a mounting and fixing mode which comprises the following two modes, namely a pin shaft lock type mounting mechanism, wherein the pin shaft lock type mounting mechanism has the characteristics of simple structure and high mounting efficiency, but under the condition of extreme collision of a vehicle, the risk of separation of a battery pack and a frame possibly exists, and potential safety risk exists; the second is the bolt-up type structure, welds the nut on the frame, realizes the fixed mounting of battery package casing and frame through the cooperation of bolt and nut, but in specific operation process, because welded nut's life is limited (usually 10 times), after the number of times of changing the battery package surpassed the life of nut, will influence its fixed effect, and then probably lead to the emergence of incident.
Disclosure of Invention
The invention aims to provide a fixing device and an automobile, and solves the problems that nuts for fixing a power battery pack cannot be replaced and the fixing effect is poor when the nuts are used for exceeding the use period due to the fact that nuts for fixing the power battery pack are welded on a frame in the prior art.
In order to achieve the above object, an aspect of the present invention provides a fixing device for fixing a power battery pack, including a bolt, a gear nut, a locking mechanism, and a base for fixing the locking mechanism, the base being fixed to a vehicle frame, the base including a support portion for supporting the gear nut, and a replacement portion for detaching the gear nut, and the support portion and the replacement portion being in communication with each other, the locking mechanism being for locking the gear nut assembled on the support portion, the bolt and the locked gear nut being screwed to fix the power battery pack.
Preferably, the supporting part and the replacing part are of groove structures, a circular opening is formed in the groove bottom of the supporting part, a square opening is formed in the groove bottom of the replacing part, the caliber of the circular opening is larger than the diameter of a bolt column and smaller than the outline outer diameter of the gear nut, and the caliber of the square opening is larger than the outline outer diameter of the gear nut.
Preferably, the gear nut comprises an internal thread nut and an external gear which is coaxial with the internal thread nut and is integrally formed.
Further, the locking mechanism comprises a first locking part and a second locking part which are arranged on two sides of the supporting part in a mirror image mode, the first locking part is used for locking the gear nut in a meshed mode with the external gear when the gear nut rotates anticlockwise, and the second locking part is used for locking the gear nut in a meshed mode with the external gear when the gear nut rotates clockwise.
Preferably, the first locking part comprises a first ratchet assembly, a first limit column and a first lock sub-block, the second locking part comprises a second ratchet assembly, a second limit column and a second lock sub-block, the first lock sub-block and the second lock sub-block are symmetrically fixed on two sides of the supporting part, the first limit column and the second limit column are symmetrically fixed on two sides of the supporting part, and the distance from the first limit column/the second limit column to the supporting part is smaller than the distance from the first lock sub-block/the second lock sub-block to the supporting part;
the first ratchet assembly is arranged on the first limit column in a sleeved mode, the first lock sub-block is used for controlling the rotation range of the first ratchet assembly, the second ratchet assembly is arranged on the second limit column in a sleeved mode, the second lock sub-block is used for controlling the rotation range of the second ratchet assembly, when the gear nut rotates anticlockwise, the first ratchet assembly is locked, and when the gear nut rotates clockwise, the second ratchet assembly is locked.
Preferably, the first ratchet assembly/second ratchet assembly comprises an integrally formed ratchet and a rotating body, a rotation limiting groove is formed in one side of the rotating body, a limiting hole penetrating up and down is formed in the center of the rotating body, a first limiting column/second limiting column is sleeved with the limiting hole, and a first lock sub block/second lock sub block is matched with the rotation limiting groove to limit the rotation range of the rotating body.
Preferably, the ratchet teeth are engaged with the gear teeth of the external gear in a matching way, and the end faces of the rotating body and the ratchet teeth are gradually reduced.
Optionally, a return spring is arranged at the bottom of the rotating body and is used for driving the rotating body to return to a preset position.
Preferably, the first lock sub-block/the second lock sub-block comprises a fixed body and a convex column arranged at one end of the fixed body, wherein the convex column is positioned in the rotation limiting groove, so that the rotating body can only rotate within the area range of the rotation limiting groove.
Compared with the prior art, the fixing device provided by the invention has the following beneficial effects:
the fixing device provided by the invention comprises a bolt, a gear nut, a locking mechanism and a base, wherein the locking mechanism is fixed on the base, the base is fixed on the frame, and further, the relative fixation of the locking mechanism and the frame can be realized, as the support part with an opening at the bottom and the replacement part are arranged on the base, the support part and the replacement part are mutually communicated, in the process of installing a power battery pack, a nut can be sent into the replacement part through the opening at the bottom of the replacement part, then is translated to the preset position of the support part, the gear nut is supported by the support part, the gear nut is locked by the locking mechanism to prevent the gear nut from rotating, the assembly of the gear nut is completed, and as the assembled gear nut can only be translated and can not rotate under the combined action of the support part and the locking mechanism, the gear nut can realize the relative fixation function under the action of the rotating force of the bolt, and can realize the horizontal displacement function under the action of the horizontal force of the mechanical arm.
An aspect of the present invention provides an automobile, including the power battery pack fixing device according to the above technical scheme.
Compared with the prior art, the beneficial effects of the automobile provided by the invention are the same as those of the fixing device provided by the technical scheme, and the description is omitted here.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is an assembled perspective view of a fixing device according to a first embodiment;
FIG. 2 is a schematic cross-sectional view of the fixing device of FIG. 1;
FIG. 3 is an exploded view of the fixture of FIG. 1;
FIG. 4 is an enlarged schematic view of the first and second ratchet assemblies of FIG. 1;
fig. 5 is an enlarged schematic view of the first lock sub-block and the second lock sub-block in fig. 1.
Reference numerals:
1-a base, 2-a gear nut;
3-locking mechanism, 4-bolt;
11-a supporting part and 12-a piece changing part;
21-an internal thread nut, 22-an external gear;
31-a first locking portion, 32-a second locking portion;
311-a first lock sub-block, 312-a first limit column;
313-first ratchet assembly, 321-second lock sub-block;
322-second spacing post, 323-second ratchet assembly;
331-a convex column, 341-a fixed body;
333-ratchet, 334-rotator;
3341-limiting holes, 3342-rotation limiting grooves.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, the following description of the embodiments accompanied with the accompanying drawings will be given in detail. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 to 3, the fixing device provided in this embodiment is used for fixing a power battery pack, and includes a bolt 4, a gear nut 2, a locking mechanism 3, and a base 1 for fixing the locking mechanism 3, wherein the base 1 is fixed on a vehicle frame, the base 1 includes a supporting portion 11 for supporting the gear nut 2, and a replacement portion 12 for disassembling the gear nut 2, the supporting portion 11 is mutually communicated with the replacement portion 12, the locking mechanism 3 is used for locking the gear nut 2 assembled on the supporting portion 11, and the bolt 4 and the locked gear nut 2 are connected through threads to fix the power battery pack.
The fixing device provided in this embodiment is composed of a bolt 4, a gear nut 2, a locking mechanism 3 and a base 1, wherein the locking mechanism 3 is fixed on the base 1, and the base 1 is fixed on a frame, so that the locking mechanism 3 and the frame can be relatively fixed, because the base 1 is provided with a support part 11 with an opening at the bottom and a replacement part 12, and the support part 11 and the replacement part 12 are mutually communicated, in the process of installing a power battery pack, the nut can be sent into the replacement part 12 through the opening at the bottom of the replacement part 12, then translated to a preset position of the support part 11, the gear nut 2 is supported by the support part 11, and the locking mechanism 3 is used for locking the gear nut 2 to prevent rotation, so that the assembly of the gear nut 2 is completed, and because the assembled gear nut 2 can only move in a translation way under the combined action of the support part 11 and the locking mechanism 3, but not can rotate in a rotation way, therefore, the gear nut 2 can realize the function of relative fixation under the action of the rotating force of the bolt 4, and can realize the function of horizontal displacement under the action of the horizontal force of the manipulator on the gear nut 2, thus, in the process of assembling the bolt 4, the fixing of the power battery pack can be realized after the bolt 4 is translated to the corresponding position of the supporting part 11 and the gear nut 2 through penetrating the bottom openings of the power battery pack shell and the part replacement part 12 in sequence, and when the nut needs to be replaced, the gear nut 2 is disassembled, replaced and reinstalled in the reverse order, therefore, the fixing device adopting the structure can not only realize the same fixing effect as the nut welded on the frame in the prior art, but also realize the free disassembly of the nut and/or the bolt, and then can be convenient to change the nut and/or the bolt that use in excess.
It should be understood that the fixing modes of the locking mechanism 3, the base 1, and the frame are various, and the present embodiment is not limited to the above fixing modes, and may be, for example, fixing modes such as "welding", "punching", "riveting", and "bolting".
Specifically, referring to fig. 1 and 3, in the above embodiment, the supporting portion 11 and the replacing portion 12 are both in a groove structure, the groove bottom of the supporting portion 11 is provided with a circular opening, the groove bottom of the replacing portion 12 is provided with a square opening, the caliber of the circular opening is larger than the bolt diameter of the bolt 4 and smaller than the outline outer diameter of the gear nut 2, and the caliber of the square opening is larger than the outline outer diameter of the gear nut 2.
The gear nut 2 includes an internally threaded nut 21 and an externally toothed gear 22 that is coaxial with the internally threaded nut 21 and is integrally formed.
In specific implementation, by arranging the circular opening at the bottom of the supporting part 11, the bolt 4 can establish a threaded connection relationship with the internal thread nut 21 from the bottom of the supporting part 11, and the caliber of the circular opening is set to be larger than the bolt diameter of the bolt 4 and smaller than the outline outer diameter of the gear nut 2, so that the bolt of the bolt 4 can be in threaded connection with the internal thread nut 21 through the circular opening, but the external gear 22 can be clamped by the circular opening, thus under the combined action of the supporting part 11 and the locking mechanism 3, the gear nut 2 can be relatively fixed, namely, the gear nut 2 can only make translational movement but not be rotated at the moment, therefore, the gear nut 2 can be in a relatively fixed state when the bolt 4 is fastened, the function of facilitating the assembly of the bolt 4 is achieved, and the gear nut 2 can also be translated from the supporting part 11 to the replacement part 12 through the manipulator, so that the function of facilitating the disassembly of the gear nut 2 is achieved; in addition, the groove bottom of the replacing part 12 is provided with a square opening, the caliber of the square opening is larger than the outline outer diameter of the gear nut 2, the square opening is arranged for the convenience of the gear nut 2 entering the base 1, and the gear nut 2 can be quickly replaced by grabbing the gear nut 2 by a manipulator.
Therefore, in the prior art, in order to solve the technical bottleneck of long charging time and short endurance mileage of the electric automobile, a technical means of quick replacement of a power battery pack is generally adopted to solve the problems; for example, in the process of replacing the power battery pack, the power battery pack fixing device needs to be removed first, and the existing power battery pack fixing device usually welds the gear nut 2 on the frame, so that the power battery pack can be removed only by removing the bolt 4.
Specifically, referring to fig. 1 and 3, the locking mechanism 3 in the above embodiment includes a first locking portion 31 and a second locking portion 32 which are mirror images provided on both sides of the supporting portion 11, the first locking portion 31 being for engaging the locking gear nut 2 with the external gear 22 when the gear nut 2 rotates counterclockwise, and the second locking portion 32 being for engaging the locking gear nut 2 with the external gear 22 when the gear nut 2 rotates clockwise.
Further, the first locking portion 31 includes a first ratchet assembly 313, a first limiting post 312 and a first lock sub-block 311, the second locking portion 32 includes a second ratchet assembly 323, a second limiting post 322 and a second lock sub-block 321, the first lock sub-block 311 and the second lock sub-block 321 are symmetrically fixed at two sides of the supporting portion 11, the first limiting post 312 and the second limiting post 322 are symmetrically fixed at two sides of the supporting portion 11, and the distance between the first limiting post 312 and the second limiting post 322 and the supporting portion 11 is smaller than the distance between the first lock sub-block 311 and the second lock sub-block 321 and the supporting portion 11;
further, referring to fig. 1 and 3, the first ratchet assembly 313 is sleeved on the first limiting post 312, the first lock sub-block 311 is used for controlling the rotation range of the first ratchet assembly 313, the second ratchet assembly 323 is sleeved on the second limiting post 322, the second lock sub-block 321 is used for controlling the rotation range of the second ratchet assembly 323, and the second lock sub-block 321 is locked by the first ratchet assembly 313 when the gear nut 2 rotates anticlockwise and by the second ratchet assembly 323 when the gear nut 2 rotates clockwise.
Further, referring to fig. 4, the first ratchet assembly 313/second ratchet assembly 323 includes an integrally formed ratchet 333 and a rotating body 334, a rotation limiting groove 3342 is formed on one side of the rotating body 334, a vertically penetrating limiting hole 3341 is formed in the center of the rotating body 334, the first limiting post 312/second limiting post 322 is sleeved with the limiting hole 3341, and the first lock sub-block 311/second lock sub-block 321 cooperates with the rotation limiting groove 3342 to limit the rotation range of the rotating body 334.
Further, referring to fig. 4 and 5, the first lock sub-block 311/the second lock sub-block 321 includes a fixed body 341 and a protruding column 331 disposed at one end of the fixed body 341, where the protruding column 331 is located in the rotation limiting groove 3342, so that the rotating body 334 can only rotate within the area of the rotation limiting groove 3342.
Illustratively, referring to fig. 3 or 4, the ratchet 333 of the above embodiment is engaged with the teeth of the external gear 22 in a matching manner, and the rotating body 334 is gradually reduced in the direction of the end face of the ratchet 333.
In specific implementation, the first ratchet assembly 313 is respectively sleeved on the first limit post 312, so that the first ratchet assembly 313 can rotate around the first limit post 312, and the second ratchet assembly 323 is sleeved on the second limit post 322, so that the second ratchet assembly 323 can rotate Rao Di the second limit post 322, meanwhile, in order to improve the locking control precision of the gear nut 2, in the embodiment, the first lock sub-block 311 is arranged beside the first ratchet assembly 313 to limit the rotation range of the first ratchet assembly 313, and the second lock sub-block 321 is arranged beside the second ratchet assembly 323 to limit the rotation range of the second ratchet assembly 323, in the specific assembly process, the assembly positions of the first limit post 312, the first lock sub-block 311, the second limit post 322 and the second lock sub-block 321 are all set through accurate measurement, so that after the first ratchet assembly 313 is sleeved on the first limit post 312, the convex post 331 in the first lock sub-block 311 just falls into the rotation limit groove 3342 of the first ratchet assembly 313, when the gear nut 313 rotates clockwise, the gear nut 313 is driven to rotate in the same direction as the first ratchet assembly 313, and the first ratchet assembly 313 is further blocked from rotating clockwise, and the gear nut is further blocked from rotating in the clockwise state of the first lock sub-block 313; similarly, after the second ratchet assembly 323 is sleeved with the second limiting post 322, the convex post 331 in the second lock sub-block 321 just falls into the rotation limiting groove 3342 of the second ratchet assembly 323, and at this time, when the gear nut 2 rotates clockwise, the second ratchet assembly 323 in the engaged state is driven to rotate anticlockwise until the groove wall of the rotation limiting groove 3342 of the second ratchet assembly 323 is blocked by the convex post 331, the second ratchet assembly 323 is in the blocked state, and then the gear nut 2 in the engaged state as well as the second ratchet assembly 323 is locked, so that the gear nut 2 cannot rotate continuously in the blocked direction.
It can be seen that, through the setting of above-mentioned structure, through the setting of bolt 4 penetrating in proper order fixed power battery package casing, circular opening and gear nut 2 threaded connection, in the in-process of clockwise rotation bolt 4 and gear nut 2 fastening, second locking portion 32 plays and locks gear nut 2, make gear nut 2 be in the state of relative fixation, make things convenient for the fastening process of bolt 4 and gear nut 2, and in the in-process of anticlockwise rotation bolt 4 and gear nut 2 pine, first locking portion 31 plays and locks gear nut 2, make gear nut 2 be in the state of relative fixation, make things convenient for the pine process of bolt 4 and gear nut 2, so the device that uses this embodiment to provide, whether in the fastening process of bolt 4 and gear nut 2 or pine process, can all be realized under gear nut 2 non-welded fastening state, realize the removable change to bolt 4 and/or nut.
Preferably, in order to avoid the situation that the gear nut 2 cannot be effectively locked due to the failure of the first ratchet assembly 313 and/or the second ratchet assembly 323 to return in time, the present embodiment is provided with a return spring (not shown in the drawing) at the bottom of the rotating body 334, where the return spring is used to drive the rotating body 334 to return to a predetermined position, so that the first ratchet assembly 313 and/or the second ratchet always trend towards the gear nut 2, which is beneficial to locking the gear nut 2.
Example two
An embodiment of the present invention provides an automobile including the fixing device as in embodiment one.
Compared with the prior art, the beneficial effects of the automobile provided by the embodiment of the invention are the same as those of the fixing device provided by the first embodiment, and the description is omitted here.
In the description of the above embodiments, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a fixing device for fixing power battery package, its characterized in that includes bolt, gear nut, locking mechanism and is used for fixing the base of locking mechanism, the base is fixed on the frame, the base is including being used for supporting gear nut's supporting part, and be used for dismantling gear nut's trading piece portion, just supporting part with trade piece portion intercommunication each other, locking mechanism is used for the locking gear nut of assembly on the supporting part, the bolt passes through threaded connection with the gear nut of locking and fixes power battery package, the supporting part with trade piece portion is the groove structure, just the tank bottom of supporting part is equipped with circular opening, trade piece portion's tank bottom is equipped with square opening, circular opening's bore is greater than the bolt diameter and is less than gear nut's profile external diameter, square opening's bore is greater than gear nut's profile external diameter, gear nut include internal thread nut and with internal thread nut coaxial and integrated into one piece's external gear, including setting up first locking part and the gear nut of locking with the locking is in the gear nut is in the time of locking with the second locking part is used for the gear nut is rotated clockwise when locking with the gear nut.
2. The device of claim 1, wherein the first locking portion comprises a first ratchet assembly, a first limit post and a first lock sub-block, the second locking portion comprises a second ratchet assembly, a second limit post and a second lock sub-block, the first lock sub-block and the second lock sub-block are symmetrically fixed on two sides of the supporting portion, the first limit post and the second limit post are symmetrically fixed on two sides of the supporting portion, and the distance from the first limit post to the supporting portion is smaller than the distance from the first lock sub-block to the second lock sub-block to the supporting portion;
the first ratchet assembly is arranged on the first limit column in a sleeved mode, the first lock sub-block is used for controlling the rotation range of the first ratchet assembly, the second ratchet assembly is arranged on the second limit column in a sleeved mode, the second lock sub-block is used for controlling the rotation range of the second ratchet assembly, when the gear nut rotates anticlockwise, the first ratchet assembly is locked, and when the gear nut rotates clockwise, the second ratchet assembly is locked.
3. The device according to claim 2, wherein the first ratchet assembly/second ratchet assembly comprises an integrally formed ratchet and a rotating body, a rotation limiting groove is formed in one side of the rotating body, a limiting hole penetrating up and down is formed in the center of the rotating body, the first limiting column/second limiting column is sleeved with the limiting hole, and the first lock sub-block/second lock sub-block is matched with the rotation limiting groove to limit the rotation range of the rotating body.
4. A device according to claim 3, wherein the ratchet teeth matingly engage with the teeth of the external gear, and the rotator is tapered with respect to the end face of the ratchet teeth.
5. A device according to claim 3, wherein the bottom of the rotator is provided with a return spring for urging the rotator back to a predetermined position.
6. A device according to claim 3, wherein the first/second lock sub-block comprises a fixed body and a boss provided at one end of the fixed body, the boss being located in the rotation limiting recess such that the rotating body can only rotate within the area of the rotation limiting recess.
7. An automobile, characterized by comprising the fixing device according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811049298.XA CN108980184B (en) | 2018-09-10 | 2018-09-10 | Fixing device and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811049298.XA CN108980184B (en) | 2018-09-10 | 2018-09-10 | Fixing device and car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108980184A CN108980184A (en) | 2018-12-11 |
| CN108980184B true CN108980184B (en) | 2024-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811049298.XA Active CN108980184B (en) | 2018-09-10 | 2018-09-10 | Fixing device and car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108980184B (en) |
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| FR3029980B1 (en) * | 2014-12-15 | 2017-01-13 | Snecma | REPAIR SYSTEM FOR A FASTENER EQUIPPING A REACTOR WALL |
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| JP2005226789A (en) * | 2004-02-16 | 2005-08-25 | Isuzu Motors Ltd | Fastening member with torque limiter |
| CN101869996A (en) * | 2010-06-25 | 2010-10-27 | 山东威达机械股份有限公司 | Locking mechanism, chuck device with same and fastening clamp |
| CN105351333A (en) * | 2015-12-04 | 2016-02-24 | 北汽福田汽车股份有限公司 | Vehicle and thread connection device thereof |
| CN106112489A (en) * | 2016-08-22 | 2016-11-16 | 山西北方机械制造有限责任公司 | A kind of large-scale connector locking and kickoff mechanism |
| CN206092656U (en) * | 2016-08-24 | 2017-04-12 | 浙江中瑞汽车零部件有限公司 | Tire nut |
| CN206645653U (en) * | 2017-04-24 | 2017-11-17 | 浙江田中精机股份有限公司 | Tensioning wheel governor motion |
| CN108119511A (en) * | 2018-02-19 | 2018-06-05 | 何长青 | A kind of double nut reverse thread anti-loosing fixing device |
| CN208858743U (en) * | 2018-09-10 | 2019-05-14 | 一汽-大众汽车有限公司 | A kind of fixed device and automobile |
Also Published As
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|---|---|
| CN108980184A (en) | 2018-12-11 |
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