Cylinder cover capable of preventing bolt from loosening

Abstract

The utility model relates to the technical field of cylinder covers, and discloses a cylinder cover capable of preventing a bolt from loosening, which comprises an upper cylinder cover, a through hole is formed in the top of the upper cylinder cover, a first mounting groove is formed in the bottom of the upper cylinder cover, a fixed clamping hook is fixedly connected to the bottom of the inner wall of the first mounting groove, and the bottom of the upper cylinder cover is in threaded connection with a mounting base. A bolt is fixedly connected to the top of the mounting base, the bolt is in threaded connection with a nut, a second mounting groove is formed in the bottom of the mounting base, and a fixing column is fixedly connected to the inner wall of the second mounting groove. By arranging the movable clamping hook and the fixed clamping hook, when the upper cylinder cover is in contact with the surface of the mounting base, the fixed clamping hook is located in the mounting groove II, and is hung on the inner side surface of the movable clamping hook under the springback of the spring, so that the fixed clamping hook and the movable clamping hook are limited when the whole cylinder cover is mounted; the upper cylinder cover is prevented from being separated from the mounting base up and down to cause looseness of bolts.

Description

Technical Field

[0001] This utility model relates to the field of cylinder head technology, specifically to a cylinder head that can prevent bolts from loosening. Background Technology

[0002] The cylinder head is a crucial component of an engine. Located at the top of the cylinder block, it seals the cylinder and, together with the piston, forms the combustion chamber. The cylinder head contains numerous channels for coolant circulation to dissipate heat and ensure the engine operates at its normal operating temperature. It also contains intake and exhaust ports. Its complex structure typically houses the valve mechanism, including valves, valve springs, rocker arms, and other components. The performance of the cylinder head directly affects the engine's power output, fuel economy, and emissions levels. Materials used include cast iron and aluminum alloys; aluminum alloy cylinder heads are widely used in modern engines due to their superior heat dissipation and lightweight properties.

[0003] When the cylinder head is connected to the cylinder block, it needs to be fixed with bolts. However, when the engine is in use, internal shaking can cause the bolts at the connection between the cylinder head and the cylinder to loosen. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a cylinder head that can prevent bolts from loosening, including an upper cylinder head. The top of the upper cylinder head has a through hole, and the bottom of the upper cylinder head has a first mounting groove. A fixing hook is fixedly connected to the bottom of the inner wall of the first mounting groove. The bottom of the upper cylinder head is threadedly connected to a mounting base. The top of the mounting base is fixedly connected to a bolt, and the bolt is threadedly connected to a nut. The bottom of the mounting base has a second mounting groove. A fixing post is fixedly connected to the inner wall of the second mounting groove. A movable sleeve is rotatably connected to the surface of the fixing post. A movable hook is fixedly connected to the right end of the movable sleeve. A lever is fixedly connected to the left end of the movable sleeve. A limit post is fixedly connected to the bottom of the lever. A spring is fixedly connected to the bottom of the movable hook.

[0005] Through the above technical solution, by setting a movable hook and a fixed hook, when the upper cylinder head contacts the surface of the mounting base, the surfaces of the fixed hook and the movable hook also contact and are pressed down. After being pressed down, the movable hook rotates on the surface of the fixed post and presses the spring. When the upper cylinder head contacts the surface of the mounting base, the fixed hook is located inside the second mounting groove and, under the spring's rebound, hooks onto the inner surface of the movable hook. This limits the fixed hook and the movable hook during the installation of the entire cylinder head, preventing the upper cylinder head from separating from the mounting base and causing the bolts to loosen.

[0006] As a further improvement to the above solution, the number of through holes is set to several, and the several through holes are evenly distributed symmetrically on the surface of the top of the cylinder head, and the bolts pass through the through holes.

[0007] With the above technical solution, several through holes are symmetrically and evenly distributed on the top surface of the cylinder head. This design ensures that the cylinder head is subjected to uniform force during installation, avoiding problems such as localized damage or poor sealing caused by uneven force. Bolts pass through these through holes, ensuring that the bolts can accurately pass through the upper cylinder head and secure the mounting base to the upper cylinder head. This also helps in the positioning of various components during assembly.

[0008] As a further improvement to the above solution, there are two mounting slots, and the two mounting slots are evenly distributed symmetrically on the surface of the cylinder head bottom.

[0009] With the above technical solution, the two mounting slots are symmetrically and evenly distributed on the surface of the cylinder head bottom center. This symmetrical distribution helps to ensure the balance and stability of the upper cylinder head when it is installed or when it is combined with other components. Structurally, it can better disperse stress and improve the overall structural strength of the cylinder head.

[0010] As a further improvement to the above solution, one end of the second mounting groove near the outer surface of the mounting base penetrates the inner wall of the mounting base.

[0011] As a further improvement to the above solution, the bottom of the spring is fixedly connected to the bottom of the inner wall of the mounting groove two.

[0012] With the above technical solution, the bottom of the spring is fixedly connected to the bottom of the inner wall of the second mounting groove. This fixing method provides a stable support point for the spring, enabling the spring to work normally within its elastic range and providing stable elastic force for the movable hook connected to the spring.

[0013] As a further improvement to the above solution, a positioning post is fixedly connected to the bottom of the through hole, and a limit hole is opened on the top of the mounting base.

[0014] Through the above technical solution, the positioning pin at the bottom of the through hole and the limiting hole at the top of the mounting base cooperate with each other. The presence of the positioning pin helps to accurately position the mounting base during the installation process, ensuring the accuracy of the installation. The concentric design further improves the installation accuracy, making the connection between the upper cylinder head and the mounting base tighter.

[0015] As a further improvement to the above solution, the number of positioning posts is set to several, and the several positioning posts are symmetrically and evenly distributed on the surface above the bottom of the cylinder head, and the positioning posts are concentric with the limiting holes.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention features a movable hook and a fixed hook. When the upper cylinder head contacts the surface of the mounting base, the surfaces of the fixed hook and the movable hook also contact and are pressed down. Under the downward pressing force, the movable hook rotates on the surface of the fixed post and presses the spring. When the upper cylinder head contacts the surface of the mounting base, the fixed hook is located inside the second mounting groove and, under the spring's rebound, hooks onto the inner surface of the movable hook. This limits the movement of the fixed hook and the movable hook during the installation of the cylinder head, preventing the upper cylinder head from separating from the mounting base and causing the bolts to loosen.

[0018] This invention increases the strength of the overall connection by setting a positioning post, which fits inside the limiting hole during the installation of the upper cylinder head and the mounting base. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the separation structure of the upper cylinder head and the mounting base of this utility model;

[0021] Figure 3 This is a schematic diagram of the bottom structure of the upper cylinder head of this utility model;

[0022] Figure 4 This is a schematic cross-sectional view of the overall structure of this utility model;

[0023] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A.

[0024] In the diagram: 1. Upper cylinder head; 2. Through hole; 3. Mounting slot one; 4. Fixing hook; 5. Mounting base; 6. Bolt; 7. Nut; 8. Mounting slot two; 9. Fixing post; 10. Movable sleeve; 11. Movable hook; 12. Paddle plate; 13. Limiting post; 14. Spring; 15. Positioning post; 16. Limiting hole. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] Example:

[0027] Please combine Figure 1-5This embodiment of a cylinder head that prevents bolts from loosening includes an upper cylinder head 1. The upper cylinder head 1 has a through hole 2 at its top and a mounting groove 3 at its bottom. A fixing hook 4 is fixedly connected to the bottom of the inner wall of the mounting groove 3. A mounting base 5 is threadedly connected to the bottom of the upper cylinder head 1. A bolt 6 is fixedly connected to the top of the mounting base 5, and a nut 7 is threadedly connected to the bolt 6. The through hole 2 at the bottom of the upper cylinder head 1 is passed through the surface of the bolt 6, causing the bottom of the upper cylinder head 1 to contact the bottom of the mounting base 5. The nut 7 then secures the upper cylinder head 1 to the mounting base 5. The mounting base 5 is fixed in place. The bottom of the mounting base 5 has a mounting groove 8. A fixing post 9 is fixedly connected to the inner wall of the mounting groove 8. A movable sleeve 10 is rotatably connected to the surface of the fixing post 9. A movable hook 11 is fixedly connected to the right end of the movable sleeve 10. A lever 12 is fixedly connected to the left end of the movable sleeve 10. By moving the lever 12, the fixing hook 4 is disengaged from the movable hook 11, and the upper cylinder head 1 can be pulled out from the top of the mounting base 5. A limit post 13 is fixedly connected to the bottom of the lever 12, and a spring 14 is fixedly connected to the bottom of the movable hook 11.

[0028] The number of through holes 2 is set to several, and the number of through holes 2 is evenly distributed symmetrically on the surface of the top of the cylinder head 1. The bolts 6 pass through the through holes 2.

[0029] There are two mounting slots 3, and the cylinder head 1 is symmetrically and evenly distributed on the surface at the bottom center of the cylinder head 1.

[0030] The end of mounting slot 28 that is near the outer surface of mounting base 5 penetrates the inner wall of mounting base 5.

[0031] The bottom of spring 14 is fixedly connected to the bottom of the inner wall of mounting groove 2 8.

[0032] A positioning post 15 is fixedly connected to the bottom of the through hole 2, and a limiting hole 16 is opened on the top of the mounting base 5. The positioning post 15 is sleeved inside the limiting hole 16 to increase the overall connection strength.

[0033] The number of positioning pins 15 is set to a certain number, and the positioning pins 15 are symmetrically and evenly distributed on the surface of the bottom of the cylinder head 1. The positioning pins 15 are concentric with the limiting holes 16.

[0034] The implementation principle of a cylinder head that can prevent bolts from loosening in this application embodiment is as follows: When installing the cylinder head, firstly, the through hole 2 at the bottom of the upper cylinder head 1 is passed through the surface of the bolt 6, so that the bottom of the upper cylinder head 1 is in contact with the bottom of the mounting base 5, and then the upper cylinder head 1 and the mounting base 5 are fixed by the nut 7.

[0035] When the upper cylinder head 1 contacts the surface of the mounting base 5 via the movable hook 11, the fixed hook 4 contacts the surface of the movable hook 11 and is pressed down. After being pressed down, the movable hook 11 rotates on the surface of the fixed post 9 and presses the spring 14. When the upper cylinder head 1 contacts the surface of the mounting base 5, the fixed hook 4 is located inside the mounting groove 8. Under the rebound of the spring 14, it is hooked on the inner surface of the movable hook 11, so that the fixed hook 4 and the movable hook 11 are limited when the cylinder head is installed, preventing the upper cylinder head 1 from separating from the mounting base 5 and causing the bolts to loosen. When it is necessary to separate the upper cylinder head 1 from the mounting base 5, the nut 7 is removed from the surface of the bolt 6, and the lever 12 is pushed upward to disengage the fixed hook 4 from the movable hook 11, so that the upper cylinder head 1 can be pulled out from the top of the mounting base 5.

[0036] When installing the cylinder head 1 and the mounting base 5, the positioning pin 15 is fitted inside the limiting hole 16 to increase the overall connection strength.

[0037] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A cylinder head capable of preventing bolts from loosening, characterized in that: The system includes an upper cylinder head (1), which has a through hole (2) at the top and an installation groove (3) at the bottom. A fixing hook (4) is fixedly connected to the bottom of the inner wall of the installation groove (3). An installation base (5) is threadedly connected to the bottom of the upper cylinder head (1). A bolt (6) is fixedly connected to the top of the installation base (5). A nut (7) is threadedly connected to the bolt (6). An installation groove (8) is opened at the bottom of the installation base (5). A fixing post (9) is fixedly connected to the inner wall of the installation groove (8). A movable sleeve (10) is rotatably connected to the surface of the fixing post (9). A movable hook (11) is fixedly connected to the right end of the movable sleeve (10). A lever (12) is fixedly connected to the left end of the movable sleeve (10). A limit post (13) is fixedly connected to the bottom of the lever (12). A spring (14) is fixedly connected to the bottom of the movable hook (11).

2. A cylinder head capable of preventing bolt loosening according to claim 1, characterized in that: The number of through holes (2) is set to a certain number, and the several through holes (2) are evenly distributed on the surface of the cylinder head (1) with the center of the cylinder head (1) symmetrically, and the bolt (6) passes through the through holes (2).

3. A cylinder head capable of preventing bolt loosening according to claim 1, characterized in that: The number of the mounting slots (3) is set to two, and the bottom of the cylinder head (1) is symmetrically and evenly distributed on the surface above the two mounting slots (3).

4. A cylinder head capable of preventing bolt loosening according to claim 1, characterized in that: One end of the mounting groove 2 (8) near the outer surface of the mounting base (5) penetrates the inner wall of the mounting base (5).

5. A cylinder head capable of preventing bolt loosening according to claim 1, characterized in that: The bottom of the spring (14) is fixedly connected to the bottom of the inner wall of the mounting groove (8).

6. A cylinder head capable of preventing bolt loosening according to claim 1, characterized in that: A positioning post (15) is fixedly connected to the bottom of the through hole (2), and a limit hole (16) is opened on the top of the mounting base (5).

7. A cylinder head capable of preventing bolt loosening according to claim 6, characterized in that: The number of positioning posts (15) is set to several, and the positioning posts (15) are evenly distributed symmetrically on the surface of the bottom of the cylinder head (1). The positioning posts (15) are concentric with the limiting holes (16).

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