CN210660976U - Spare tire fixing bolt - Google Patents
Spare tire fixing bolt Download PDFInfo
- Publication number
- CN210660976U CN210660976U CN201921467306.2U CN201921467306U CN210660976U CN 210660976 U CN210660976 U CN 210660976U CN 201921467306 U CN201921467306 U CN 201921467306U CN 210660976 U CN210660976 U CN 210660976U
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- bolt head
- spare tire
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Abstract
The utility model provides a spare tire fixing bolt, which comprises a bolt column and a bolt head, wherein the end of the bolt column is provided with a limit end, and a limit cavity is preset in the bolt head; the positioning connection between the bolt column and the bolt head is realized by pre-arranging the limiting end head in the limiting cavity, and the column body of the bolt column penetrates through the bottom surface of the bolt head and extends out of the bolt head; be equipped with outer straight line annular knurl on the lateral wall of spacing end, be equipped with interior straight line annular knurl on the inside wall in spacing chamber, through the mortise-tenon joint between outer straight line annular knurl and the interior straight line annular knurl combine, realize the bolt post for the spacing fixed of bolt head to provide a sound construction, with low costs and simple structure be fit for the spare tyre fixing bolt of industrial scale production.
Description
Technical Field
The utility model relates to a part technical field especially relates to a spare tyre fixing bolt for car.
Background
With the continuous development of modern society and the continuous improvement of the living standard of people, automobiles become indispensable transportation tools for many people. However, nowadays when the development of automobiles is more and more advanced, a spare tire is still an indispensable spare part of the automobiles, the spare tire is fixed on the automobile through a spare tire fixing bolt at ordinary times, and in emergency situations such as air leakage and tire burst, the spare tire fixing bolt is loosened, and the spare tire is removed and replaced.
Present spare tyre fixing bolt need carry out the dismouting through specialized tool mostly, though there are some spare tyre fixing bolt that the loading and unloading is comparatively simple relatively, still have a great deal of problem:
(1) for the plug connection between screw thread post and the thread head, the junction of fastening bolt and spare tyre clamp plate is smooth design, and when the fastening operation, axial rotation appears in both very easily, appears skidding, and the fastening is tight inadequately.
(2) In order to ensure the overall connection strength of the bolt, the fixing bolt is complicated in structure and thick and solid in material, so that the cost is greatly increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a spare tyre fixing bolt that sound construction, with low costs and simple structure are fit for the industrial scale production.
In order to achieve the above purpose, the utility model provides a spare tire fixing bolt, which comprises a bolt column and a bolt head, wherein, the end of the bolt column is provided with a limit end, and a limit cavity is preset in the bolt head; the positioning connection between the bolt column and the bolt head is realized by pre-arranging the limiting end head in the limiting cavity, and the column body of the bolt column penetrates through the bottom surface of the bolt head and extends out of the bolt head;
the bolt column is limited and fixed relative to the bolt head by the tenon-and-mortise combination of the outer straight-line knurls and the inner straight-line knurls.
Preferably, the bolt head comprises a screwing handle and a nut seat; the nut seat is fixed on the lower end face of the screwing handle;
the limiting cavity is pre-buried in the symmetrical center position of the screwing handle, a through hole is formed in the symmetrical center position of the nut seat, the through hole is communicated with the limiting cavity, the limiting end is pre-buried in the limiting cavity, and the column body of the bolt column penetrates through the through hole and extends out of the bolt head.
Preferably, the screwing handle is of an 8-angle gear type structure, and adjacent corners of the screwing handle are connected through inwards-concave arc edges.
Preferably, the upper end surface of the screwing handle surrounds the limit cavity for a circle of a cement digging structure, and 8 corners of the screwing handle are fixedly connected with the outer side wall of the limit cavity through two reinforcing ribs arranged in parallel.
Preferably, a circle of the lower end surface of the nut seat surrounding the through hole is of a cement-drawing structure, a plurality of reinforcing ribs are arranged between the inner side wall of the nut seat and the outer side wall of the through hole, and the reinforcing ribs are arranged at equal intervals around the circle of the through hole.
Preferably, the maximum diameter of the twist handle is greater than the maximum diameter of the nut socket.
Preferably, the bolt head is a polypropylene bolt head; the bolt column is a metal bolt column.
Compared with the prior art, the utility model has the advantages that:
(1) the design of the outer straight knurling on the side wall of the limiting end and the inner straight knurling on the inner side wall of the limiting cavity effectively prevents the bolt column from axially moving relative to the bolt head, and avoids the phenomenon of thread sliding between the bolt column and the thread head.
(2) The screwing handle is of an 8-angle gear type structure, so that an operator can conveniently apply force to hands when fastening the spare tire without slipping, and the spare tire can be fixed by the operator in the absence of tools.
(3) The arrangement of the gluing structure and the reinforcing ribs on the screwing handle and the arrangement of the gluing structure and the reinforcing ribs on the nut seat ensure the overall strength of the screwing handle and the nut seat, and under the condition of ensuring the overall strength of the screwing handle and the nut seat, the gluing structure ensures the thickness of the product wall to be uniform, reduces the weight of the product, saves the cost of raw materials, reduces the production cooling time of the product and shortens the forming period of the product.
Drawings
Fig. 1 is an exploded view of a spare tire fixing bolt according to an embodiment of the present invention;
fig. 2 is a perspective view of a spare tire fixing bolt according to an embodiment of the present invention;
fig. 3 is a top view of a spare tire fixing bolt according to an embodiment of the present invention;
fig. 4 is a cross-sectional view of a spare tire fixing bolt according to an embodiment of the present invention;
fig. 5 is the utility model discloses an in the embodiment connecting structure picture between spare tyre fixing bolt, wheel hub and the fixed panel beating.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be further described below.
As shown in fig. 1 and fig. 2, the utility model provides a spare tire fixing bolt, which comprises a bolt column 1 and a bolt head 2, wherein, a limit end 11 is arranged at the end of the bolt column 1, and a limit cavity 3 is preset in the bolt head 2; the limiting end 11 is preset in the limiting cavity 3 to realize the positioning connection between the bolt column 1 and the bolt head 2, and the column body of the bolt column 1 penetrates through the bottom surface of the bolt head 2 and extends out of the bolt head 2;
the side wall of the limiting end 11 is provided with an outer straight knurling, the inner side wall of the limiting cavity 3 is provided with an inner straight knurling, and limiting and fixing of the bolt column 1 relative to the bolt head 2 are achieved through mortise and tenon combination between the outer straight knurling and the inner straight knurling; the axial relative displacement between the bolt column 1 and the bolt head 2 is effectively prevented, and the phenomenon of thread sliding between the bolt column 1 and the thread head is avoided.
As shown in fig. 5, in this embodiment, the usage of the present invention is: bolt post 1 passes wheel hub 7 is twisted soon or the joint is in the fixed panel beating 8 of automobile body, and bolt head 2 pegs graft in the slotted hole in the middle of wheel hub 7, effectively cooperates the wheel hub of tire, prevents that the spare tyre from taking place to rock.
In the present embodiment, the bolt head 2 includes a screw handle 21 and a nut seat 22; the nut seat 22 is fixed on the lower end surface of the screwing handle 21; the screwing handle is convenient for operators to screw; the nut seat 22 is convenient to match with a tire hub, and prevents the spare tire from shaking.
In the present embodiment, the screw handle 21 is of an 8-angle gear type structure, and adjacent corners of the screw handle 21 are connected by inwardly recessed arc edges. Make operating personnel make things convenient for the hand to exert oneself when the fastening spare tyre, and can not skid, under the condition that lacks the instrument, operating personnel also can realize the fixed of spare tyre.
As shown in fig. 3, in the present embodiment, a periphery of the upper end surface of the screwing handle 21 surrounding the limiting cavity 3 is a cement structure 4, and corners of the screwing handle 8 are fixedly connected with an outer side wall of the limiting cavity 3 through two parallel reinforcing ribs 5. The arrangement of the reinforcing ribs 5 ensures the overall strength of the screwing handle 21, so that the screwing handle 21 cannot crack; under the condition of ensuring the integral strength of the product, the cementing structure 4 ensures that the wall thickness of the product is uniform, reduces the weight of the product, saves the cost of raw materials, reduces the production cooling time of the product and shortens the molding period of the product. The cementing structure 4 is described herein as the upper end of the screw handle 21 is recessed towards the inside of the screw handle 21, and the middle of the screw handle 21 is hollow.
In the embodiment, as shown in fig. 3, a cement-drawing structure 4 is arranged on the lower end surface of the nut seat 22 around the through hole, a plurality of reinforcing ribs 6 are arranged between the inner side wall of the nut seat 22 and the outer side wall of the through hole, and the reinforcing ribs 6 are arranged around the through hole at equal intervals; the arrangement of the reinforcing ribs 6 ensures the integral strength of the nut seat 22, so that the nut seat 22 cannot crack; under the condition of ensuring the integral strength of the product, the cementing structure 4 ensures that the wall thickness of the product is uniform, reduces the weight of the product, saves the cost of raw materials, reduces the production cooling time of the product and shortens the molding period of the product. The cementing structure 4 is described herein, that is, the lower end of the nut seat 22 is recessed toward the inside of the nut seat 22, and the middle of the nut seat 22 is hollow.
In this embodiment, the maximum diameter of the screw-on handle 21 is greater than the maximum diameter of the nut socket 22.
In the present embodiment, the bolt head 2 is a polypropylene bolt head 2; the bolt column 1 is a metal bolt column 1.
The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.
Claims (7)
1. A spare tire fixing bolt is characterized by comprising a bolt column and a bolt head, wherein a limiting end head is arranged at the end head of the bolt column, and a limiting cavity is preset in the bolt head; the positioning connection between the bolt column and the bolt head is realized by pre-arranging the limiting end head in the limiting cavity, and the column body of the bolt column penetrates through the bottom surface of the bolt head and extends out of the bolt head;
the bolt column is limited and fixed relative to the bolt head by the tenon-and-mortise combination of the outer straight-line knurls and the inner straight-line knurls.
2. The spare tire fixing bolt according to claim 1, wherein the bolt head includes a screw handle and a nut seat; the nut seat is fixed on the lower end face of the screwing handle;
the limiting cavity is pre-buried in the symmetrical center position of the screwing handle, a through hole is formed in the symmetrical center position of the nut seat, the through hole is communicated with the limiting cavity, the limiting end is pre-buried in the limiting cavity, and the column body of the bolt column penetrates through the through hole and extends out of the bolt head.
3. The spare tire anchor stud of claim 2, wherein the twist knob is an 8-angle gear type structure, adjacent corners of the twist knob being connected by inwardly recessed arcuate edges.
4. The spare tire fixing bolt of claim 3, wherein a circle of the upper end surface of the screwing handle surrounding the limiting cavity is of a cement digging structure, and 8 corners of the screwing handle are fixedly connected with the outer side wall of the limiting cavity through two reinforcing ribs arranged in parallel.
5. The spare tire fixing bolt according to claim 2, wherein a lower end surface of the nut seat is of a cement-scooping structure around a circumference of the through hole, a plurality of reinforcing ribs are provided between an inner side wall of the nut seat and an outer side wall of the through hole, and the plurality of reinforcing ribs are arranged at equal intervals around a circumference of the through hole.
6. The spare tire fixing bolt of claim 2, wherein a maximum diameter of the turn handle is greater than a maximum diameter of the nut seat.
7. The spare tire fixing bolt according to claim 1, wherein the bolt head is a polypropylene bolt head; the bolt column is a metal bolt column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921467306.2U CN210660976U (en) | 2019-09-05 | 2019-09-05 | Spare tire fixing bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921467306.2U CN210660976U (en) | 2019-09-05 | 2019-09-05 | Spare tire fixing bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210660976U true CN210660976U (en) | 2020-06-02 |
Family
ID=70839292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921467306.2U Active CN210660976U (en) | 2019-09-05 | 2019-09-05 | Spare tire fixing bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210660976U (en) |
-
2019
- 2019-09-05 CN CN201921467306.2U patent/CN210660976U/en active Active
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| GR01 | Patent grant |