CN218489837U - Rear fork structure of vehicle - Google Patents
Rear fork structure of vehicle Download PDFInfo
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- CN218489837U CN218489837U CN202223148610.5U CN202223148610U CN218489837U CN 218489837 U CN218489837 U CN 218489837U CN 202223148610 U CN202223148610 U CN 202223148610U CN 218489837 U CN218489837 U CN 218489837U
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- rear fork
- vehicle
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- accessory
- positioning unit
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Abstract
The utility model discloses a vehicle rear fork structure. The device comprises a first rear fork, a second rear fork and a third rear fork, wherein the first rear fork comprises at least one first connecting hole, and one end of the first rear fork is connected with a first spherical pair; the second rear fork comprises at least one second connecting hole, is arranged on one side of the first rear fork and is connected with a second spherical pair at one end corresponding to the position of the first spherical pair end; and the middle shaft penetrates through the first connecting hole of the first rear fork and the second connecting hole of the second rear fork so as to form a connecting relation between the first rear fork and the second rear fork. The utility model discloses and adopt the swing joint of sphere form between the frame, combine the connection of jackshaft to can the certain angle of automatic adjustment when receiving the road surface excitation, the corresponding angle of deflection is do to the rear wheel, improves the laminating degree on tire and uneven road surface, improves stability, makes the operator better control vehicle on cross-country road surface.
Description
Technical Field
The utility model belongs to the technical field of the vehicle rear fork technique and specifically relates to vehicle rear fork structure.
Background
The existing rear fork structure is generally integrated, has only one degree of freedom of rotation, and can only passively receive road feedback.
As shown in the patent document CN216185782U previously disclosed by the applicant, fig. 3 of the publication clearly shows a conventional rear fork structure, i.e. the rear fork is a single-piece structure including a left part, a middle part and a right part fixedly connected in sequence, and the structure can only move up and down together with the rear wheel according to a rotation connection point.
The rear fork matched with the damping piece with the structure can meet the requirements of common vehicle types, but for off-road vehicle types, how to further improve the controllability is a difficult point that designers want to overcome all the time, and therefore the applicant further improves the problem.
SUMMERY OF THE UTILITY MODEL
The utility model discloses not enough to among the prior art, provide the vehicle back vent structure, can the certain angle of automatic adjustment when receiving the road surface excitation, improve stability, make the operator control the vehicle better on cross-country road surface.
In order to solve the technical problem, the utility model discloses a following technical scheme can solve:
a rear fork structure of a vehicle, comprising
The first rear fork comprises at least one first connecting hole, and one end of the first rear fork is connected with a first spherical pair;
the second rear fork comprises at least one second connecting hole, is arranged on one side of the first rear fork and is connected with a second spherical pair at one end corresponding to the position of the first spherical pair end;
and
the middle shaft penetrates through the first connecting hole of the first rear fork and the second connecting hole of the second rear fork so as to enable the first rear fork and the second rear fork to form a connecting relation.
In the above scheme, preferably, a first mounting hole is formed at one end of the first rear fork connected with the vehicle wheel; a second mounting hole is formed in one end, connected with a vehicle wheel, of the second rear fork;
the first rear fork and the second rear fork are connected with a vehicle wheel through corresponding mounting holes, and when the vehicle wheel is stressed and needs to deflect for a certain angle, the first rear fork and the second rear fork twist for a corresponding angle along with the vehicle rear wheel through a spherical pair at the front end and a connection matching relationship with the middle shaft.
In the above scheme, preferably, the first mounting hole and the second mounting hole are both long slot holes.
In the above solution, preferably, the first rear fork is connected to a frame on one side of the vehicle through the first spherical pair; and the second rear fork is connected to the frame on the other side of the vehicle through the second spherical pair.
In the above aspect, preferably, the first rear fork and the second rear fork have the same shape and size.
In the above aspect, preferably, the length of the first rear fork is in a range of 0.5 to 1.5m; the wall thickness range of the first rear fork is 0.5mm-2cm; the length range of the second rear fork is 0.5-1.5m; the wall thickness range of the second rear fork is 0.5mm-2cm.
In the above scheme, preferably, the middle shaft is rotatably provided with a connecting accessory, and the connecting accessory is connected with the damping unit and/or connected with a connecting shaft mounted on a vehicle frame through a plurality of connecting pieces.
In the above scheme, preferably, a positioning accessory is configured on the middle shaft, one end of the positioning accessory abuts against the inner side wall of the first rear fork, and the other end of the positioning accessory abuts against the inner side wall of the second rear fork;
the middle shaft comprises a positioning head part and a threaded part, the inner side wall of the positioning head part is abutted against the outer side wall of the first rear fork, and the threaded part penetrates through the second rear fork and is in threaded connection with a nut and matched with the positioning accessory to limit the first rear fork and the second rear fork when being locked.
In the above scheme, preferably, the middle shaft is provided with a positioning accessory, and the positioning accessory comprises a first positioning unit, a first external member, a second external member and a second positioning unit which are abutted in sequence;
the outer end of the first positioning unit is abutted against the inner wall of the first rear fork; the outer end of the second positioning unit is abutted against the inner wall of the second rear fork;
the first sleeve piece and the second sleeve piece extend into the connecting accessory at least partially, and bearings are arranged on the parts extending into the connecting accessory respectively;
the middle shaft comprises a positioning head part, a polished rod part and a thread part, the inner side wall of the positioning head part is abutted against the outer side wall of the first rear fork, the positioning accessory is arranged at the polished rod part, and the thread part penetrates through the second rear fork and is in threaded connection with a nut and matched with the positioning accessory to limit the first rear fork and the second rear fork when being locked.
In the above aspect, preferably, the first sleeve and the second sleeve are respectively sleeved with a ferrule for filling a gap between the first sleeve and the bearing;
the first positioning unit and the second positioning unit are identical in shape and size;
the diameter of the outer end of the first positioning unit is larger than that of the inner end of the first positioning unit;
the diameter of the outer end of the second positioning unit is larger than that of the inner end of the second positioning unit;
the first sleeve and the second sleeve are identical in shape and size;
the diameter of the first sleeve is the same as that of the inner end of the first positioning unit and is larger than the diameter of the hole of the connecting accessory;
the diameter of the second sleeve is the same as that of the inner end of the second positioning unit and is larger than the aperture of the hole of the connecting accessory.
The utility model has the advantages that:
the utility model discloses and adopt the swing joint of sphere form between the frame, combine the connection of jackshaft to can the certain angle of automatic adjustment when receiving the road surface excitation, the corresponding angle of deflection is do to the rear wheel, improves the laminating degree on tire and uneven road surface, improves stability, makes the operator better control vehicle on cross-country road surface.
Drawings
Fig. 1 is a schematic view of the present invention.
Fig. 2 is a schematic view of the exploded status of the present invention.
Fig. 3 is a schematic cross-sectional view of the present invention.
Fig. 4 is a schematic diagram of a first positioning unit of the present invention.
Fig. 5 is a schematic view of the first kit of the present invention.
Fig. 6 is a schematic view of the connection state between the present invention and the rear wheel.
Fig. 7 is a schematic view of the state of the present invention installed on the frame and the rear wheel.
Fig. 8 is an enlarged schematic view at D in fig. 7.
Detailed Description
The invention will be described in further detail with reference to the following detailed description and accompanying drawings:
referring to fig. 1 to 8, the rear fork structure of the vehicle includes a first rear fork 1, a second rear fork 2 and a center shaft 3, wherein the center shaft 3 is used for connecting the first rear fork 1 and the second rear fork 2, and the three parts are of a combined structure, which is different from an integral fixed connection form.
As shown in fig. 2, the first rear fork 1 includes a first connection hole 11, the second rear fork 2 includes a second connection hole 21, the middle axle 3 passes through the first connection hole 11 and the second connection hole 21, in this embodiment, the middle axle 3 includes a positioning head 31, a polished rod portion 32 and a thread portion 33, and a long screw rod can be directly adopted, when the middle axle 3 is installed, the inner side wall of the positioning head 31 abuts against the outer side wall of the first rear fork 1, the thread portion 33 passes through the second connection hole 21 of the second rear fork 2 and then is in threaded connection with a nut 34, the position relation between the middle axle 3 and the first rear fork 1 and the second rear fork 2 is positioned by a nut 34 threaded locking mode, and the relative positions of the first rear fork 1 and the second rear fork 2 are also transversely defined.
The positioning head 31 of the bottom bracket 3 and the engagement with the nut 34 define the first and second forks 1 and 2 outwardly, and in this embodiment, have positioning attachments that define the first and second forks 1 and 2 inwardly.
Specifically, as shown in fig. 2 and 3, the positioning accessory is mounted on a portion of the bottom bracket 3 located between the first rear fork 1 and the second rear fork 2, and as one embodiment, portions of the bottom bracket 3 located between the first rear fork 1 and the second rear fork 3 are all light rod portions.
The positioning accessory can be of an integral structure, two ends of the positioning accessory are respectively abutted against the inner side wall of the first rear fork 1 and the inner wall of the second rear fork 2, and the positioning accessory is matched with the middle shaft 3 to improve the stability of the rear fork structure.
The positioning accessory can be a split structure, and the split structure at least comprises the following two forms:
firstly, the positioning accessories comprise a first positioning unit 41 abutted against the inner side wall of the first rear fork 1 and a second positioning unit 42 abutted against the inner side wall of the second rear fork 2, and are matched with each other, a connecting accessory 5 is sleeved on the middle shaft 3 in a rotating mode, the connecting accessory 5 comprises a middle hole 51, the middle hole 51 is sleeved on the middle shaft 3, the connecting accessory 5 is used for being connected with a damping unit 7 on a vehicle frame 6, or is connected with the damping unit 7 and a connecting shaft 61 arranged on the vehicle frame 6, and therefore the stability of the rear fork structure is further improved.
In this embodiment, the attachment 5 is located between the first positioning unit 41 and the second positioning unit 42, the first positioning unit 41 and the second positioning unit 42 respectively abut against the attachment 5, and the first positioning unit 41, the attachment 5, and the second positioning unit 42 fill the gap between the first rear fork 1 and the second rear fork 2.
Secondly, the positioning attachment includes the first positioning unit 41, the first sleeve 43, the second sleeve 44, and the second positioning unit 42 which are abutted in this order, and in this form, the connection attachment 5 is still included, and the configuration form of the connection attachment 5 is the same as that in the above-described form.
Specifically, the outer end of the first positioning unit 41 abuts against the inner wall of the first rear fork 1, the outer end of the second positioning unit 42 abuts against the inner wall of the second rear fork 2, at least part of the first sleeve 43 and part of the second sleeve 44 extend into the connecting accessory 5, that is, extend into the middle hole 51 of the connecting accessory 5, and bearings 45 are arranged on the parts of the first sleeve 43 and the second sleeve 44 respectively extending into the connecting accessory 5, and the bearings 45 fill gaps among the first sleeve 43, the second sleeve 44 and the inner wall of the connecting accessory 5.
As shown in fig. 3, the first sleeve 43 and the second sleeve 44 are respectively sleeved with a ferrule 46 for filling a gap between the bearing 45 and the ferrule.
In this embodiment, the first positioning unit 41 and the second positioning unit 42 have the same shape and size, and the diameter of the outer end of the first positioning unit 41 is larger than that of the inner end thereof; the diameter of the outer end of the second positioning unit 42 is larger than that of the inner end thereof; the first and second members 43, 44 are of the same shape and size; the diameter of the first sleeve 43 is the same as that of the inner end of the first positioning unit 41 and is larger than the diameter of the middle hole 51 of the connecting accessory 5; the second sleeve 44 has the same diameter as the inner end of the second positioning unit 42 and is larger than the diameter of the middle hole 51 of the connection accessory 5.
In one embodiment, the first rear fork 1 and the second rear fork 2 are identical in shape and size.
In this embodiment, one end of the first rear fork 1 is connected with the first spherical pair 12, the corresponding end of the second rear fork 2 is connected with the second spherical pair 22, the end of the rear fork connected with the spherical pair is used for being connected with a vehicle frame, the end connected with the spherical pair can be understood as that a spherical connection structure is arranged between the end and the vehicle frame, and the part of the rear fork connected with the vehicle frame is used as a fixed rotating shaft and is in a spherical pair form, so that the rear fork can be twisted.
When the rear fork is specifically mounted on a vehicle, referring to fig. 6-8, the first rear fork 1 is connected to a frame on one side of the vehicle through the first spherical pair 12, and the second rear fork 2 is connected to a frame on the other side of the vehicle through the second spherical pair 22; first mounting hole 13 has then been seted up to the one end that first back vent 1 and vehicle wheel 8 link to each other, second mounting hole 23 has then been seted up to the one end that second back vent 2 and vehicle wheel 8 link to each other, as one of them embodiment, first mounting hole 13 and second mounting hole 23 are the slotted hole, first back vent 1 and second back vent 2 pass the form and the vehicle rear wheel 8 fixed connection of mounting hole through the fastener, adopt the slotted hole then to do benefit to the regulation of position, solve the chain and gradually become flexible problem along with the live time increase.
In this embodiment, the length of the first rear fork ranges from 0.5m to 1.5m; the wall thickness range of the first rear fork is 0.5mm-2cm; the length range of the second rear fork is 0.5-1.5m; the wall thickness range of the second rear fork is 0.5mm-2cm.
The first positioning unit 41 and the second positioning unit 42 are made of aluminum; the first sleeve 43 and the second sleeve 44 are made of aluminum or steel.
Compared with the traditional fixed rigid connection, the combined type center shaft connection mode has the advantages that the contact area between the combined type center shaft connection mode and the first rear fork and the contact area between the combined type center shaft connection mode and the second rear fork are relatively smaller, the combined type center shaft connection mode can be twisted and deflected by a certain angle when the rear wheel is excited by a road surface in combination with the spherical pair structure and the corresponding deformation of the rear fork caused by stress, and the rear fork can be understood as the twisting in the left-right direction or the circumferential direction, so that the capacity which the existing rear fork does not have can be greatly increased, the operation performance of a vehicle can be greatly improved, the twisting does not need to be twisted by a large angle, and the controllability of the vehicle can be greatly improved by twisting by a small angle, such as 10-20 degrees. The rear fork can deform to a certain degree when stressed, and as the existing design, the rear fork has deformability if the rear fork is longer in size and thinner in wall thickness.
The utility model discloses two about the back vent divide into, fixed rotation axis is spherical pair, and overall structure adopts the combination formula, can realize 2 degrees of freedom:
when the vehicle is excited by the road surface, the vehicle can be automatically adjusted to a certain angle, so that the stability is improved, and an operator can better control the vehicle on the off-road surface;
the rear fork is connected with the frame by adopting a spherical pair, and the rear fork is of a combined structure;
the left and right rear forks can rotate relatively around the central shaft after the rear wheel is stressed, so that the rear wheel deflects by a certain angle, and the fitting degree of the tire and an uneven road surface is improved.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. Vehicle rear fork structure, its characterized in that: comprises that
The first rear fork comprises at least one first connecting hole, and one end of the first rear fork is connected with a first spherical pair;
the second rear fork comprises at least one second connecting hole, is arranged on one side of the first rear fork and is connected with a second spherical pair at one end corresponding to the position of the first spherical pair end;
and
the middle shaft penetrates through the first connecting hole of the first rear fork and the second connecting hole of the second rear fork so as to enable the first rear fork and the second rear fork to form a connecting relation.
2. The vehicle rear fork structure of claim 1, wherein: a first mounting hole is formed in one end, connected with a vehicle wheel, of the first rear fork; a second mounting hole is formed in one end, connected with a vehicle wheel, of the second rear fork;
the first rear fork and the second rear fork are connected with a vehicle wheel through corresponding mounting holes, and when the vehicle wheel is stressed and needs to deflect for a certain angle, the first rear fork and the second rear fork twist for a corresponding angle along with the vehicle rear wheel through a spherical pair at the front end and a connection matching relationship with the middle shaft.
3. The vehicle rear fork structure of claim 2, wherein: the first mounting hole and the second mounting hole are both slotted holes.
4. The vehicle rear fork structure of claim 1, wherein: the first rear fork is connected to the frame on one side of the vehicle through the first spherical pair; and the second rear fork is connected to the frame on the other side of the vehicle through the second spherical pair.
5. The vehicle rear fork structure of claim 1, wherein: the first rear fork and the second rear fork are identical in shape and size.
6. The vehicle rear fork structure of claim 1 or 5, characterized in that: the length range of the first rear fork is 0.5-1.5m; the wall thickness range of the first rear fork is 0.5mm-2cm; the length range of the second rear fork is 0.5-1.5m; the wall thickness of the second rear fork ranges from 0.5mm to 2cm.
7. The vehicle rear fork structure of claim 1, wherein: the middle shaft is rotatably provided with a connecting accessory, and the connecting accessory is connected with the damping unit and/or connected with a connecting shaft arranged on a vehicle frame through a plurality of connecting pieces.
8. The vehicle rear fork structure of claim 1 or 7, characterized in that: a positioning accessory is arranged on the middle shaft, one end of the positioning accessory is abutted against the inner side wall of the first rear fork, and the other end of the positioning accessory is abutted against the inner side wall of the second rear fork;
the middle shaft comprises a positioning head part and a threaded part, the inner side wall of the positioning head part is abutted against the outer side wall of the first rear fork, and the threaded part penetrates through the second rear fork and is in threaded connection with a nut and matched with the positioning accessory to limit the first rear fork and the second rear fork when being locked.
9. The vehicle rear fork structure of claim 7, wherein: the middle shaft is provided with a positioning accessory, and the positioning accessory comprises a first positioning unit, a first external member, a second external member and a second positioning unit which are sequentially abutted;
the outer end of the first positioning unit is abutted against the inner wall of the first rear fork; the outer end of the second positioning unit is abutted against the inner wall of the second rear fork;
the first sleeve piece and the second sleeve piece at least partially extend into the connecting accessory, and bearings are arranged on the parts extending into the connecting accessory respectively;
the middle shaft comprises a positioning head part, a polished rod part and a threaded part, the inner side wall of the positioning head part is abutted against the outer side wall of the first rear fork, the positioning accessory is arranged at the polished rod part, and the threaded part penetrates through the second rear fork and is in threaded connection with a nut and matched with the positioning accessory to limit the first rear fork and the second rear fork when being locked.
10. The vehicle rear fork structure of claim 9, wherein: the first sleeve piece and the second sleeve piece are respectively sleeved with a ferrule used for filling a gap between the first sleeve piece and the bearing;
the first positioning unit and the second positioning unit are identical in shape and size;
the diameter of the outer end of the first positioning unit is larger than that of the inner end of the first positioning unit;
the diameter of the outer end of the second positioning unit is larger than that of the inner end of the second positioning unit;
the first sleeve and the second sleeve are identical in shape and size;
the diameter of the first sleeve is the same as that of the inner end of the first positioning unit and is larger than the diameter of the hole of the connecting accessory;
the diameter of the second sleeve is the same as that of the inner end of the second positioning unit and is larger than the diameter of the hole of the connecting accessory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223148610.5U CN218489837U (en) | 2022-11-27 | 2022-11-27 | Rear fork structure of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223148610.5U CN218489837U (en) | 2022-11-27 | 2022-11-27 | Rear fork structure of vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218489837U true CN218489837U (en) | 2023-02-17 |
Family
ID=85197698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223148610.5U Active CN218489837U (en) | 2022-11-27 | 2022-11-27 | Rear fork structure of vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218489837U (en) |
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2022
- 2022-11-27 CN CN202223148610.5U patent/CN218489837U/en active Active
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