Locking bolt for anti-noise cover of automobile engine

Abstract

The utility model discloses a locking bolt for an anti-noise cover of an automobile engine, and relates to the technical field of automobile engines. The box comprises a box body and a box cover fixed on the surface of the box body, a plurality of thread grooves are formed in the surface of the box; a rectangular groove is formed in the inner bottom surface of the threaded groove; a plurality of circular grooves penetrate through the surface of the box cover; the inner wall of the threaded groove is in threaded running fit with a screw; nuts are fixed on the surfaces of the screws; the screw rod penetrates through the circular groove; the diameter of the nut is greater than that of the circular groove; operation grooves are formed in the surfaces of the nuts; the operation groove extends into the screw rod and penetrates through the bottom end of the screw rod; a plurality of abutting pieces are evenly and rotationally arranged at the bottom end of the screw rod. The abutting piece is arranged at the bottom end of the screw rod, the four-face rack drives the abutting piece to adjust the position, the abutting ball is attached to the inner bottom face and the two adjacent side faces of the rectangular groove, the abutting ball cannot move left and right, the screw rod cannot rotate, the screw rod is limited, and operation is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile engines, in particular to a locking bolt for a noise-proof cover of an automobile engine. Background Art

[0002] The automobile engine is a device that provides power for the car. It is the heart of the car and determines the car's power, economy, stability and environmental protection. According to different power sources, automobile engines can be divided into diesel engines, gasoline engines, electric car motors and hybrid power, etc. When the automobile engine is in use, a noise-proof cover is required.

[0003] At present, when assembling the automobile engine noise reduction box and the noise reduction cover, fastening bolts are usually used for connection and fixing. However, the existing fastening bolts have a simple structure and are very easy to loosen after long-term use, which will cause the noise reduction cover to be unstable and affect people's use, thereby reducing the noise reduction effect.

[0004] Therefore, we provide a locking bolt for a noise-proof cover of an automobile engine to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide a locking bolt for a car engine noise-proof cover, by arranging a tightening piece at the bottom end of a screw rod and driving the tightening piece to adjust its position through a four-sided rack, so that a tightening ball fits with the bottom surface of a rectangular groove and two adjacent side surfaces, so that the tightening ball cannot move left and right, thereby making the screw rod unable to rotate, thereby limiting the position of the screw rod, thereby solving the problem that the existing fastening bolt has a simple structure and is very likely to become loose when used for a long time, which will cause the noise-proof cover to be unstable in installation and affect people's use, thereby reducing the noise-proof effect.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a locking bolt for a car engine anti-noise cover, comprising a box body and a box cover fixed on the surface of the box body; the box body surface is provided with a plurality of thread grooves; the inner bottom surface of the thread groove is provided with a rectangular groove; the box cover surface is provided with a plurality of circular grooves; a screw is provided on the inner wall of the thread groove for rotation; a nut is fixed on the surface of the screw; the screw passes through the circular groove; the diameter of the nut is larger than the diameter of the circular groove; an operating groove is provided on the surface of the nut; the operating groove extends to the inside of the screw and passes through the bottom end of the screw; a plurality of fastening members are provided at the bottom end of the screw for uniform rotation.

[0008] The utility model is further configured as follows: four installation grooves are evenly arranged at the bottom end of the screw in a circumferential array; and each of the fastening members is evenly arranged on the inner wall of each installation groove in a circumferential array.

[0009] The utility model is further configured as follows: the clamping member comprises a clamping gear rotatably arranged on the inner wall of the mounting groove; a clamping shaft is fixed to the peripheral side of the clamping gear; a clamping ball is fixed to the bottom end of the clamping shaft; the clamping ball fits with the inner bottom surface and inner wall of the rectangular groove.

[0010] The utility model is further configured as follows: a sliding shaft is slidably arranged on the inner wall of the operating groove; a four-sided rack is fixed on the bottom end of the sliding shaft; and the four-sided rack is meshed with the abutting gear.

[0011] The utility model is further configured as follows: a cover plate is fixed on the top of the sliding shaft; a protective ring is fixed on the bottom of the cover plate; the inner diameter of the protective ring is larger than the outer diameter of the nut; the bottom of the cover plate fits the surface of the nut; and a plurality of annular grooves for plugging and cooperating with the protective rings are provided on the surface of the box cover.

[0012] The utility model is further configured as follows: the inner wall of the annular groove is evenly distributed with a plurality of slide grooves in a circular array; the slide groove runs through the two inner walls of the annular groove; a plug-in block is slidably provided on the inner wall of the slide groove; and a plug-in spring is connected between the plug-in block and the inner wall of the slide groove.

[0013] The utility model is further configured as follows: a plurality of limit grooves are evenly distributed and penetrated through the circumferential side surface of the protection ring in a circular array; the number of the limit grooves is the same as the number of the slide grooves; and the plug-in block is plugged and matched with the limit grooves.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model sets a clamping piece at the bottom end of the screw rod, and drives the clamping piece to adjust its position through a four-sided rack. The clamping ball fits with the bottom surface of the rectangular groove and the two adjacent side surfaces, so that the clamping ball cannot move left and right, and the screw rod cannot rotate, thereby limiting the screw rod and facilitating operation.

[0016] 2. The utility model arranges a cover plate and a protective ring at the top of the sliding shaft, so that the protective ring is inserted into the annular groove, and finally the plug-in block is plugged into the limit groove. At this time, the protective ring cannot move up and down, and thus the cover plate, the sliding shaft, and the four-sided rack cannot move up and down, and thus the clamping gear cannot rotate, and thus the clamping member is limited and fixed, which further optimizes the fastening effect of the bolt.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 The present invention is a structural schematic diagram of a locking bolt of a noise-proof cover of an automobile engine.

[0020] Figure 2 For the utility model Figure 1 A magnified image of area A.

[0021] Figure 3 For the utility model Figure 1 A magnified view of area B.

[0022] Figure 4 For the utility model Figure 1 Magnified view of area C.

[0023] Figure 5 It is a partial structural schematic diagram of the box cover of the utility model.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Box body; 2. Box cover; 3. Threaded groove; 4. Rectangular groove; 5. Circular groove; 6. Screw; 7. Nut; 8. Operating groove; 9. Mounting groove; 10. Clamping gear; 11. Clamping shaft; 12. Clamping ball; 13. Sliding shaft; 14. Four-sided rack; 15. Cover plate; 16. Protective ring; 17. Annular groove; 18. Sliding groove; 19. Plug-in block; 20. Plug-in spring; 21. Limiting groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] For specific embodiment 1, please refer to Figure 1-5The utility model is a locking bolt for a car engine noise-proof cover, comprising a box body 1 and a box cover 2 fixed on the surface of the box body 1; a plurality of thread grooves 3 are provided on the surface of the box body 1; a rectangular groove 4 is provided on the inner bottom surface of the thread groove 3; a plurality of circular grooves 5 are provided on the surface of the box cover 2; a screw rod 6 is provided on the inner wall of the thread groove 3 for rotation; a nut 7 is fixed on the surface of the screw 6; the screw 6 passes through the circular groove 5; the diameter of the nut 7 is larger than the diameter of the circular groove 5; an operating groove 8 is provided on the surface of the nut 7; the operating groove 8 extends to the inside of the screw rod 6 and passes through the bottom end of the screw 6; a plurality of fastening members are provided at the bottom end of the screw 6 for uniform rotation.

[0028] Specifically, four installation grooves 9 are evenly arranged in a circular array at the bottom end of the screw rod 6 ; and the abutting members are evenly arranged on the inner wall of each installation groove 9 in a circular array.

[0029] Furthermore, the clamping member includes a clamping gear 10 rotatably arranged on the inner wall of the mounting groove 9; a clamping shaft 11 is fixed to the side surface of the clamping gear 10; a clamping ball 12 is fixed to the bottom end of the clamping shaft 11; and the clamping ball 12 fits with the inner bottom surface and inner wall of the rectangular groove 4.

[0030] Furthermore, a sliding shaft 13 is slidably provided on the inner wall of the operating groove 8 ; a four-sided rack 14 is fixed to the bottom end of the sliding shaft 13 ; and the four-sided rack 14 is meshed with the abutting gear 10 .

[0031] The operation process of this embodiment is as follows: first, the box cover 2 is covered on the surface of the box body 1, the screw 6 is passed through the circular groove 5 and rotated into the inside of the threaded groove 3. When the clamping piece enters the rectangular groove 4, the sliding shaft 13 is passed through the inner wall of the operating groove 8 and slides downward. When the four-sided rack 14 contacts the clamping gear 10, it drives the clamping gear 10 to rotate along the inner wall of the installation groove 9, and then drives the clamping shaft 11 and the clamping ball 12 to rotate until the clamping ball 12 is close to the inner wall and inner bottom surface of the rectangular groove 4. At this time, the sliding shaft 13 is stopped, and the screw 6 is also rotated to the bottom of the threaded groove 3. At this time, the screw 6 is installed and the nut 7 is close to the surface of the box cover 2.

[0032] The abutting ball 12 fits with the inner bottom surface and two adjacent side surfaces of the rectangular groove 4, so that the abutting ball 12 cannot move left and right, and the screw rod 6 cannot rotate, thereby limiting the position of the screw rod 6, which is easy to operate.

[0033] For specific embodiment 2, please refer to Figure 1-5 On the basis of the specific embodiment 1, a cover plate 15 is fixed to the top of the sliding shaft 13; a protective ring 16 is fixed to the bottom of the cover plate 15; the inner diameter of the protective ring 16 is larger than the outer diameter of the nut 7; the bottom surface of the cover plate 15 fits the surface of the nut 7; and a plurality of annular grooves 17 are provided on the surface of the box cover 2 to be plugged into and matched with the protective ring 16.

[0034] Specifically, the inner wall of the annular groove 17 is evenly distributed with a plurality of slide grooves 18 in a circular array; the slide groove 18 runs through the two inner walls of the annular groove 17; a plug-in block 19 is slidably provided on the inner wall of the slide groove 18; and a plug-in spring 20 is connected between the plug-in block 19 and the inner wall of the slide groove 18.

[0035] Furthermore, a plurality of limiting grooves 21 are evenly distributed in a circular array on the side surface of the protective ring 16 ; the number of the limiting grooves 21 is the same as the number of the sliding grooves 18 ; and the plug-in blocks 19 are plugged into and matched with the limiting grooves 21 .

[0036] The operation process of this embodiment is as follows: when the sliding shaft 13 slides to the lowest position, the four-sided rack 14 moves to the lowest position, and then the clamping piece completes the clamping inside the rectangular groove 4. At this time, the cover plate 15 fits with the surface of the nut 7, and the protective ring 16 is inserted into the annular groove 17 on the surface of the box cover 2. The surface of the plug-in block 19 is chamfered so that the protective ring 16 first contacts the plug-in block 19 and pushes the plug-in block 19 to slide along the inner wall of the slide groove 18 and compress the plug-in spring 20. The protective ring 16 continues to move downward. When the plug-in block 19 is aligned with the limiting groove 21, the elastic force of the plug-in spring 20 pushes the plug-in block 19 into the limiting groove 21. At this time, the protective ring 16 cannot move up and down, and then the cover plate 15, the sliding shaft 13, the four-sided rack 14, cannot move up and down, and then the clamping gear 10 cannot rotate, and then the clamping piece is limited and fixed, which further optimizes the tightening effect of the bolt.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A locking bolt for an automobile engine noise-proof cover, comprising a box body (1) and a box cover (2) fixed to a surface of the box body (1); Features: The box body (1) has a plurality of thread grooves (3) on its surface; the inner bottom surface of the thread groove (3) has a rectangular groove (4); and the box cover (2) has a plurality of circular grooves (5) extending through its surface. The inner wall of the thread groove (3) is threadedly engaged with a screw rod (6); a nut (7) is fixed on the surface of the screw rod (6); the screw rod (6) passes through the circular groove (5); the diameter of the nut (7) is larger than the diameter of the circular groove (5); An operating groove (8) is provided on the surface of the nut (7); the operating groove (8) extends into the interior of the screw rod (6) and penetrates the bottom end of the screw rod (6); and a plurality of tightening members are provided at the bottom end of the screw rod (6) for uniform rotation.

2. A locking bolt for an automobile engine noise-proof cover according to claim 1, It is characterized in that The bottom end of the screw rod (6) is evenly provided with four installation grooves (9) in a circular array; the abutting members are evenly distributed in a circular array on the inner wall of each installation groove (9).

3. A locking bolt for an automobile engine noise-proof cover according to claim 2, It is characterized in that The pressing member comprises a pressing gear (10) rotatably arranged on the inner wall of the mounting groove (9); a pressing shaft (11) is fixed to the peripheral side of the pressing gear (10); a pressing ball (12) is fixed to the bottom end of the pressing shaft (11); and the pressing ball (12) is in contact with the inner bottom surface and inner wall of the rectangular groove (4).

4. A locking bolt for an automobile engine noise-proof cover according to claim 3, It is characterized in that A sliding shaft (13) is slidably provided on the inner wall of the operating groove (8); a four-sided rack (14) is fixed to the bottom end of the sliding shaft (13); and the four-sided rack (14) is meshed with the abutting gear (10).

5. The locking bolt of the automobile engine noise-proof cover according to claim 4, It is characterized in that A cover plate (15) is fixed to the top of the sliding shaft (13); a protective ring (16) is fixed to the bottom of the cover plate (15); the inner diameter of the protective ring (16) is larger than the outer diameter of the nut (7); the bottom of the cover plate (15) is in contact with the surface of the nut (7); and a plurality of annular grooves (17) for plugging and cooperating with the protective ring (16) are provided on the surface of the box cover (2).

6. The locking bolt for the automobile engine noise protection cover according to claim 5, It is characterized in that The inner wall of the annular groove (17) is provided with a plurality of slide grooves (18) evenly distributed in a circular array; the slide groove (18) penetrates the two inner walls of the annular groove (17); a plug-in block (19) is slidably provided on the inner wall of the slide groove (18); and a plug-in spring (20) is connected between the plug-in block (19) and the inner wall of the slide groove (18).

7. The locking bolt for the automobile engine noise protection cover according to claim 6, It is characterized in that The protective ring (16) has a plurality of limit grooves (21) evenly distributed in a circular array on the circumferential side surface; the number of the limit grooves (21) is the same as the number of the slide grooves (18); and the plug-in block (19) is pluggably engaged with the limit grooves (21).

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