Integrated bushing bolt

Abstract

The utility model relates to an integrated bushing bolt, which comprises a bolt and a bushing movably sleeved on the bolt, the bolt comprises a bolt head and a screw rod connected with the bolt head, and the surface of the screw rod radially protrudes to form an annular convex rib; the end face or the inner wall of the lining is provided with a limiting protrusion, the limiting protrusion located on the inner wall of the lining is located between the annular convex rib and the bolt head, and the limiting protrusion located on the inner wall of the lining can abut against the annular convex rib in the length direction of the screw rod and is used for limiting the lining. According to the utility model, the bolt and the bushing are combined into an integrated structure, so that the integrated assembly of the bolt and the bushing is realized, the sleeving stations of the bolt and the bushing are reduced, and the assembly working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engine fasteners, in particular to an integrated bushing bolt. Background Art

[0002] A car engine hood, usually referred to as a hood or engine cover, refers to a component covering the top of a car's engine compartment, used to protect the engine and its related components from damage by dust, moisture and other external factors. The hood is usually made of plastic material, and sometimes metal (such as steel or aluminum) is also used. The flange on the edge of the plastic hood is usually provided with mounting bolt holes for fixing the plastic hood to the engine structure. Before the bolts are driven into the bolt holes, in order to prevent the flanges from being cracked by the pressure of the bolts, metal bushings are usually pre-installed in the bolt holes to support the flanges to increase strength. The existing solution is generally to assemble the metal bushings and bolts separately, that is, first install the metal bushings in the bolt holes of the plastic hood, and then drive the bolts in on the assembly line. The disadvantage of this approach is that it requires multiple workstations, resulting in low work efficiency. Utility Model Content

[0003] To this end, the technical problem to be solved by the present invention is to overcome the problem in the prior art that the metal bushing and the bolt are assembled separately, which has many assembly stations and low work efficiency, and then provide an integrated bushing bolt to realize the one-time assembly of the bushing and the bolt, without the need to assemble the bushing and the bolt separately, reducing the assembly stations and improving the assembly work efficiency.

[0004] In order to solve the above technical problems, the utility model provides an integrated bushing bolt, which includes a bolt and a bushing movably sleeved on the bolt, wherein the bolt includes a bolt head connected to a screw rod.

[0005] The surface of the screw is radially raised to form an annular rib;

[0006] The end face or inner wall of the bushing is provided with a limiting protrusion, and the limiting protrusion located on the inner wall of the bushing is located between the annular rib and the bolt head. The limiting protrusion located on the inner wall of the bushing can abut against the annular rib along the length direction of the screw to limit the bushing.

[0007] In one embodiment of the present invention, the bolt is provided with a transition section between the bolt head and the screw rod.

[0008] In one embodiment of the present invention, the annular rib is located between the threaded section and the transition section of the screw.

[0009] In one embodiment of the present invention, the length of the bushing is smaller than the length of the screw rod, and the length of the bushing is larger than the length of the transition section.

[0010] In one embodiment of the present invention, the inner diameter of the bushing is larger than the diameters of the threaded section and the transition section.

[0011] In one embodiment of the present invention, the limiting protrusion is configured as an annular protrusion or a block-shaped protrusion, and the bushing protrudes radially inward to form the annular protrusion and the block-shaped protrusion.

[0012] In one embodiment of the present invention, a plurality of block-shaped protrusions are included, and the plurality of block-shaped protrusions are evenly distributed in an annular shape along the circumference of the bushing.

[0013] In one embodiment of the present invention, a convex bulge is provided on the outer wall of the bushing, and the convex bulge extends along the length direction of the bushing.

[0014] In one embodiment of the present invention, one end of the convex bump close to the bolt head is flush with the end surface of the bushing, and the other end of the convex bump is configured as a guide surface, which is engaged with the outer wall of the bushing.

[0015] In one embodiment of the present invention, a plurality of convex hulls are included, and the plurality of convex hulls are evenly distributed on the outer wall of the bushing.

[0016] The above technical solution of the utility model has the following beneficial effects compared with the prior art:

[0017] The integrated bushing bolt described in the utility model realizes the integrated assembly of the bolt and the bushing by combining the bolt and the bushing into an integrated structure, reduces the bolt and bushing assembly stations, and improves the assembly work efficiency; the bushing is hung on the annular rib through the limiting protrusion on the inner wall, which can prevent the bushing from separating from the bolt and improve the stability of the bolt and bushing combination; the bolt head flattens the limiting protrusion on the end face of the bushing and flips it to the inside of the bushing to form a hanging point, which greatly improves the assembly efficiency of the bolt and the bushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on the specific embodiments of the utility model and in conjunction with the accompanying drawings, wherein

[0019] Figure 1 This is a structural diagram of an integrated bushing bolt in a preferred embodiment of the present utility model;

[0020] Figure 2 for Figure 1 A schematic structural diagram of an exploded view of the integral bushing bolt shown;

[0021] Figure 3 for Figure 2 A schematic structural diagram of a cross-sectional view of the integrated bushing bolt shown;

[0022] Figure 4 for Figure 3 A schematic structural diagram of the bushing shown;

[0023] Explanation of the reference numerals in the accompanying drawings in the specification: 1. Bolt; 11. Bolt head; 12. Transition section; 13. Annular rib; 14. Threaded section; 2. Bushing; 21. Bump; 22. Guide surface; 23. Limiting protrusion; 231. Block-shaped protrusion. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0025] Example

[0026] Reference Figure 2 and 3 As shown, in one embodiment of the present invention, an integrated bushing bolt is disclosed, which includes a bolt 1 and a metal bushing 2 movably sleeved on the bolt 1. The bolt 1 is used to connect the engine structure and the engine cover. The metal bushing 2 is installed in the bolt hole of the cover to play a supporting role. The bolt 1 includes a bolt head 11 connected to a screw rod of the bolt head 11. Furthermore, the bushing 2 is sleeved on the screw rod.

[0027] The surface of the screw is radially raised to form an annular rib 13;

[0028] The end face of the bushing 2 is provided with a limiting protrusion 23, and the limiting protrusion 23 can be slightly inclined toward the axis of the bushing 2. In this way, when the bolt 1 and the bushing 2 are assembled, the limiting protrusion 23 can be flipped toward the inside of the bushing 2 under the action of the pressure of the bolt head 11 to form a limiting protrusion 23 located on the inner wall of the bushing 2, and the limiting protrusion 23 located on the inner wall of the bushing 2 is located between the annular rib 13 and the bolt head 11. When the bushing 2 slides along the screw, the limiting protrusion 23 can abut against the annular rib 13 along the length direction of the screw to block and limit the bushing 2. When the bushing 2 moves upward, it is pressed by the bolt head 11, thereby preventing the bushing 2 from separating from the bolt 1; in other embodiments, the limiting protrusion 23 can be directly formed by the radial protrusion of the inner wall of the bushing 2.

[0029] Reference Figure 2 As shown, the bolt 1 is provided with a smooth transition section 12 between the bolt head 11 and the screw rod. The limiting protrusion 23 can move in the transition section 12 . The length of the transition section 12 determines the distance that the bolt 1 can move relative to the bushing 2 .

[0030] Reference Figure 2As shown, the annular rib 13 is located between the threaded section 14 of the screw and the transition section 12 to prevent the limiting protrusion 23 from interfering with the threaded section 14 of the bolt 1 .

[0031] Reference Figure 3 As shown, the length of the bushing 2 is smaller than the length of the screw rod so that the bolt 1 can be driven into the screw hole of the engine; the length of the bushing 2 can be larger than the length of the transition section 12. In other embodiments, the length of the bushing 2 can be smaller than the length of the transition section 12.

[0032] Reference Figure 3 As shown, the inner diameter of the bushing 2 is larger than the diameter of the threaded section 14 and the transition section 12. When the bolt 1 and the bushing 2 are erected, the bolt 1 only contacts the upper end surface of the bushing 2. The purpose is to ensure that the threaded section 14 and the transition section 12 are not in direct contact with the bushing 2, reduce the resistance of the bolt 1, and facilitate the assembly of the bolt 1.

[0033] Reference Figure 3 As shown, the limiting protrusion 23 is configured as a block-shaped protrusion 231, and the bushing 2 protrudes radially inward to form the block-shaped protrusion 231. In other embodiments, the limiting protrusion 23 can also be configured as an annular protrusion coaxial with the bushing 2, the purpose of which is to make the limiting protrusion 23 more firmly and fully hung on the annular rib 13.

[0034] Reference Figure 4 As shown, it includes three block protrusions 231, which are evenly distributed in an annular shape along the circumference of the bushing 2 and hung on the annular rib 13. By hanging the three block protrusions 231 on different hanging points of the annular rib 13, it is ensured that the block protrusions 231 will not flip over the annular rib 13 due to the loosening of the bolt 1 relative to the bushing 2.

[0035] Reference Figure 2 As shown, the outer wall of the bushing 2 is provided with a bulge 21, which extends along the length direction of the bushing 2. The bulge 21 can increase the friction between the bushing 2 and the cover bolt 1 hole to prevent the bushing 2 from falling off from the bolt 1 hole.

[0036] Reference Figure 2 As shown, the length of the bulge 21 is less than or equal to the length of the bushing 2. When the length of the bulge 21 is less than the length of the bushing 2, one end of the bulge 21 close to the bolt head 11 is flush with the end face of the bushing 2, and the other end can extend to the middle of the bushing 2. This end is set as an inclined guide surface 22, and the guide surface 22 is connected to the outer wall of the bushing 2. The guide surface 22 can reduce the resistance of the bushing 2 to inserting into the hole of the cover bolt 1.

[0037] Reference Figure 4As shown, there are three convex humps 21 , which are evenly distributed on the outer wall of the bushing 2 . In other embodiments, four or even five convex humps 21 may be provided.

[0038] The working principle of the integrated bushing bolt of the utility model is:

[0039] When the screw passes through the bushing 2, the bolt head 11 flattens the limiting protrusion 23 on the end face of the bushing 2 and turns it inward to the inside of the bushing 2 to form a hanging point and hang on the annular rib 13, thereby realizing the integrated combination of the bolt 1 and the bushing 2 in advance. Then, the bolt 1 and bushing 2 are combined and installed into the bolt 1 hole of the cover. On the cover and engine assembly line, after the cover is placed on the engine, the bolt 1 is directly driven into the engine screw hole to complete the connection between the cover and the engine structure, thereby realizing the one-time assembly of the screw and the bushing 2, without the need to assemble the bolt 1 and the bushing 2 separately.

[0040] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An integrated bushing bolt, comprising a bolt and a bushing movably sleeved on the bolt, wherein the bolt comprises a bolt head connected to a screw rod, characterized in that: The surface of the screw is radially raised to form an annular rib; The end face or inner wall of the bushing is provided with a limiting protrusion, and the limiting protrusion located on the inner wall of the bushing is located between the annular rib and the bolt head. The limiting protrusion located on the inner wall of the bushing can abut against the annular rib along the length direction of the screw to limit the bushing.

2. The integrated bushing bolt according to claim 1, characterized in that: The bolt is provided with a transition section between the bolt head and the screw rod.

3. The integrated bushing bolt according to claim 2, characterized in that: The annular rib is located between the thread section and the transition section of the screw.

4. The integrated bushing bolt according to claim 2, characterized in that: The length of the bushing is smaller than the length of the screw rod, and the length of the bushing is larger than the length of the transition section.

5. The integrated bushing bolt according to claim 3, characterized in that: The inner diameter of the bushing is larger than the diameters of the threaded section and the transition section.

6. The integrated bushing bolt according to claim 1, characterized in that: The limiting protrusion is configured as an annular protrusion or a block-shaped protrusion, and the bushing protrudes radially inward to form the annular protrusion and the block-shaped protrusion.

7. The integrated bushing bolt according to claim 6, characterized in that: It comprises a plurality of block-shaped protrusions, and the plurality of block-shaped protrusions are evenly distributed in an annular shape along the circumference of the bushing.

8. The integrated bushing bolt according to claim 1, characterized in that: A convex bulge is provided on the outer wall of the bushing, and the convex bulge extends along the length direction of the bushing.

9. The integrated bushing bolt according to claim 8, characterized in that: One end of the convex bump close to the bolt head is flush with the end surface of the bushing, and the other end of the convex bump is configured as a guide surface, which is engaged with the outer wall of the bushing.

10. The integrated bushing bolt according to claim 8 or 9, characterized in that: It comprises a plurality of convex hulls, and the plurality of convex hulls are evenly distributed on the outer wall of the bushing.

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