A hinge with a latching function and a car bonnet equipped with the hinge

Abstract

The present application discloses a hinge with a fixed function and a car cover with the hinge, the hinge with the fixed function comprises a rotating disc and a fixed disc, the rotating disc is provided with a guide groove, and the fixed disc is provided with a rotating block matched with the guide groove. The car cover is provided with the hinge with the fixed function. After the cover is opened and hands are released, the cover is automatically fixed and cannot fall down by moving slightly downward, a supporting rod is not needed, the operation is simple, the engine maintenance is not affected, the cover is allowed to fall down, the cover can be pushed upward by hands, and the cover can fall back to the original position.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of mechanical technology, and particularly relates to a hinge with a fixed angle function and a car engine cover provided with the hinge. BACKGROUND

[0002] The engine cover (referred to as engine cover) is used for protecting the engine and other components inside the engine compartment. One end of the engine cover is connected to the vehicle body through a hinge. When the engine and other components need to be maintained, the engine cover can be opened. There is a supporting rod in the engine compartment. The supporting rod is used for supporting the engine cover, so that the engine cover can be kept in an open state. This arrangement is not only troublesome to operate, but also affects the maintenance of the engine. It is common that the maintainer or the maintenance tool collides with the supporting rod. SUMMARY

[0003] In order to solve the problems in the prior art, the present application provides a hinge with a fixed angle function and a car engine cover provided with the hinge.

[0004] The technical scheme adopted by the present application is as follows: a hinge with a fixed angle function, characterized in that the hinge with a fixed angle function comprises a rotating disc and a fixed disc, the rotating disc and the fixed disc are coaxial with a center shaft, the rotating disc can rotate around the center shaft, and the fixed disc cannot rotate around the center shaft; a guide groove is arranged on the rotating disc, the guide groove comprises an arc-shaped groove and a sheet-shaped groove, the arc-shaped groove is an arc with the center shaft as the center, the sheet-shaped groove is located at one end of the arc-shaped groove and is connected with the arc-shaped groove, the sheet-shaped groove is distributed on the inner and outer sides of the arc-shaped groove, the sheet-shaped groove and the inner edge of the arc-shaped groove form a corner, a convex rib is arranged in the sheet-shaped groove, the convex rib is opposite to the corner at a distance, the distance from the top end of the convex rib to the center shaft is equal to the distance from the center of the arc-shaped groove to the center shaft; a rotating block is arranged on the fixed disc, the center of the rotating block is rotatably arranged on the fixed disc through a rotating shaft, the distance from the rotating shaft to the center shaft is equal to the distance from the center of the arc-shaped groove to the center shaft, the rotating block is located in the guide groove, the thickness of the rotating block is equal to the depth of the guide groove, the length of the rotating block is slightly greater than the distance between the corner and the top end of the convex rib, the width of the rotating block is equal to the width of the arc-shaped groove, the two side edges of the rotating block are concave arc-shaped edges, and the curvature of the arc-shaped edges is the same as the curvature of the inner edge of the arc-shaped groove, and the two ends of the rotating block are provided with concave corner blocks.

[0005] Further, a sealing layer is arranged on the outer periphery of the rotating disc or the fixed disc.

[0006] Further, the rotating disc and the fixed disc are respectively provided with a stop block, the two stop blocks are matched with each other to limit the maximum rotating angle of the rotating disc, and the maximum rotating angle of the rotating disc is less than ninety degrees.

[0007] A car engine cover, characterized in that the car engine cover is provided with the above-mentioned hinge with a fixed angle function, wherein the fixed disc is fixed to the vehicle body, and the rotating disc is fixed to the car engine cover.

[0008] The working process of the present application is as follows: before the cover is opened, the rotating block is located in the arc-shaped groove; when the cover is lifted, the cover drives the rotating disc to rotate, the rotating block slides relative to the arc-shaped groove, and the rotating block gradually separates from the arc-shaped groove; when the cover is close to vertical, the convex rib in the guide groove abuts against one end of the rotating block, at this time, the other end of the rotating block just passes the corner of the guide groove, the rotating block is slightly counterclockwise rotated under the action of the convex rib, at this time, the corner and the convex rib are both within the angle range of the clamping corners at both ends of the rotating block, and the cover cannot continue to rotate due to the action of the two stop blocks; since the cover is not in a vertical state, the cover will fall reversely after the hand is released, the corner of the guide groove just clamps the clamping corner at one end of the rotating block when the cover slightly falls, so that the rotating disc cannot rotate, the cover cannot fall down, and the cover is fixed at this position; if the cover is to be lowered, the cover is only needed to be pushed upward, the convex rib acts on the side of the rotating block to make the rotating block rotate counterclockwise again, the corner moves to the outside of the clamping corner of the rotating block, at this time, the corner and the convex rib are both not within the angle range of the clamping corners at both ends of the rotating block, the cover is released to make the cover fall down, since the corner and the convex rib are both not within the angle range of the clamping corners at both ends of the rotating block, the rotating block cannot block the rotating disc, and the cover cannot be blocked to fall down, with the falling of the cover, the corner acts on the side of the rotating block to make the rotating block rotate, so that the rotating block reenters the arc-shaped groove, but the rotating block has been rotated by 180° relative to the original position in the arc-shaped groove, that is, the clamping corners at both ends of the rotating block are exchanged, and when the cover falls back to the original position, a working cycle is completed.

[0009] The present application has the advantages that: the cover is automatically fixed at the maximum opening angle and cannot fall down after the hand is released, no supporting rod is needed, the operation is simple, convenient, fast, safe and reliable, the cover cannot affect the engine maintenance, and the cover can fall back to the original position by pushing the cover upward. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a structure diagram of the rotating disc of the present application.

[0011] Figure 2 is a structure diagram of the fixed disc of the present application.

[0012] Figure 3 is a structure diagram of the whole body of the present application.

[0013] Figure 4 is a structure diagram of the hinge working process of the present application. EMBODIMENT

[0014] In order to further understand the present application, the present application is described in detail in combination with the drawings.

[0015] A hinge with a fixed function, comprising a rotating disc 1 and a fixed disc 2, the rotating disc 1 and the fixed disc 2 have a same center shaft 3, the rotating disc 1 can rotate around the center shaft 3, the fixed disc 2 cannot rotate around the center shaft 3; the rotating disc 1 is provided with a guide slot, the guide slot comprises an arc-shaped slot 4 and a sheet-shaped slot 5, wherein the arc-shaped slot 4 is an arc shape with the center shaft 3 as the center, the sheet-shaped slot 5 is located at one end of the arc-shaped slot 4 and is through with the arc-shaped slot 4, the sheet-shaped slot 5 is distributed on the inner and outer sides of the arc-shaped slot 4, the sheet-shaped slot 5 and the inner edge of the arc-shaped slot 4 form an edge 6, the sheet-shaped slot 5 is provided with a convex edge 7, the convex edge 7 is opposite to the edge 6 with a spacing, the distance from the top end of the convex edge 7 to the center shaft 3 is equal to the distance from the center of the arc-shaped slot 4 to the center shaft 3; the fixed disc 2 is provided with a rotating block 8, the rotating block 8 is rotatably arranged on the fixed disc 2 through a rotating shaft 9, the distance from the rotating shaft 9 to the center shaft 3 is equal to the distance from the center of the arc-shaped slot 4 to the center shaft 3, the rotating block 8 is located in the guide slot, the thickness of the rotating block 8 is equal to the depth of the guide slot, the length of the rotating block 8 is slightly greater than the spacing distance between the edge 6 and the top end of the convex edge 7, the width of the rotating block 8 is equal to the width of the arc-shaped slot 4, the two side edges of the rotating block 8 are inwardly concave arc-shaped edges, and the curvature of the arc-shaped edges is the same as the curvature of the inner edge of the arc-shaped slot 4, the two ends of the rotating block 8 are provided with inwardly concave corner blocks 10.

[0016] Further, the rotating disc 1 or the fixed disc 2 is provided with a sealing layer on the outer periphery.

[0017] Further, the rotating disc 1 and the fixed disc 2 are respectively provided with a stop block 11, the two stop blocks 11 cooperate with each other to limit the maximum rotation angle of the rotating disc 1, and the maximum rotation angle of the rotating disc 1 is less than ninety degrees.

[0018] A car cover, characterized in that the car cover 12 is provided with the above-mentioned hinge with a fixed function, wherein the fixed disc 2 is fixed on the vehicle body, and the rotating disc 1 is fixed on the car cover 12.

Claims

1. A hinge with a locking function, characterized in that: The hinge with a locking function includes a rotating disk and a fixed disk, which share the same central axis. The rotating disk can rotate around the central axis, while the fixed disk cannot. The rotating disk has guide grooves, including arc-shaped grooves and plate-shaped grooves. The arc-shaped groove is an arc centered on the central axis. The plate-shaped groove is located at one end of the arc-shaped groove and communicates with it. The plate-shaped grooves are distributed inside and outside the arc-shaped groove, forming an angle with the inner edge of the arc-shaped groove. The plate-shaped groove has protruding ridges, which are spaced apart from the angle. The distance from the tip of the protruding ridge to the central axis is equal to the arc-shaped groove. The distance from the center of the groove to the central axis; a rotating block is provided on the fixed disk, and the center of the rotating block is rotatably set on the fixed disk through a rotating shaft. The distance from the rotating shaft to the central axis is equal to the distance from the center of the arc groove to the central axis. The rotating block is located in the guide groove, and the thickness of the rotating block is equal to the depth of the guide groove. The length of the rotating block is slightly greater than the distance between the corner and the top of the protruding edge. The width of the rotating block is equal to the width of the arc groove. The two sides of the rotating block are concave arc edges, and the curvature of the arc edges is the same as the curvature of the inner edge of the arc groove. The two ends of the rotating block are provided with concave corner brackets.

2. The hinge with a locking function according to claim 1, characterized in that: The rotating disk or fixed disk has a sealing layer on its outer periphery.

3. A hinge with a locking function according to claim 1, characterized in that: The rotating disk and the fixed disk are each equipped with a stop block. The two stop blocks cooperate with each other to limit the maximum rotation angle of the rotating disk, which is less than 90 degrees.

4. A car hood, characterized in that: The car hood is provided with a hinge with a locking function as described in claim 1, wherein the fixed plate is fixed to the car body and the rotating plate is fixed to the car hood.

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