Tightly-connected cylinder cover

Abstract

The utility model discloses a tightly connected cylinder cover, the tightly connected cylinder cover comprises a cylinder cover, the cylinder cover is provided with a plurality of mounting holes, the mounting holes are provided with fastening components, each fastening component comprises a bolt, a spring washer, a flat washer and a rubber gasket, the spring washer, the flat washer and the rubber gasket are sequentially sleeved on the bolt, and the spring washer, the flat washer and the rubber gasket are arranged on the cylinder cover. A plurality of anti-skid parts are uniformly distributed on the inner wall of the rubber gasket by taking the round point as the axis and are attached to the outer wall of the bolt, and a plurality of pressure-bearing parts are uniformly distributed on the flat gasket by taking the round point as the axis and are embedded into the rubber gasket. As the pressure-bearing part drives the rubber gasket to contract in the axis direction, the anti-skid part is tightly pressed on the surface of the bolt, the friction force between the rubber gasket and the bolt is increased, the connection tightness between the bolt and the mounting hole is increased through the spring gasket, the movable block is pushed by the screw to tightly abut against the mounting hole, and the tightness and friction force between the bolt and the mounting hole are increased. Therefore, the product has the advantages of stable connection and improved locking force.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinder heads, in particular to a tightly connected cylinder head. Background Art

[0002] A motorcycle engine cylinder typically consists of a cylinder block, cylinder head, piston, piston rings, crankshaft, connecting rod, and valves. The cylinder block and cylinder head form the basic structure of the cylinder, accommodating piston movement and sealing the combustion chamber. The piston and piston rings reciprocate within the cylinder, withstanding combustion pressure. The crankshaft and connecting rod convert the piston's reciprocating motion into rotational motion, thereby driving the vehicle forward.

[0003] The traditional installation structure for cylinder heads uses a sealing gasket placed between the cylinder head and cylinder block, which is then tightened with bolts to achieve a secure connection and seal. During normal engine operation, vibrations can cause the bolts to loosen, increasing vibrations between the cylinder head, cylinder block, and bolts, thereby reducing the service life of the cylinder head and cylinder block. Therefore, the applicant has devised a useful design and found a solution to this problem. The technical solution described below was developed in this context. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned background technology designs and to provide a product with stable connection and improved locking force.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions.

[0006] A tightly connected cylinder head comprises a cylinder head, the cylinder head being provided with a plurality of mounting holes, the mounting holes being provided with fastening assemblies, the fastening assemblies comprising bolts, spring washers, flat washers, and rubber gaskets, the spring washers, flat washers, and rubber gaskets being sequentially sleeved on the bolts, the inner wall of the rubber gasket being provided with a plurality of anti-slip portions evenly distributed with a circle as the axis, and being in contact with the outer wall of the bolt, the flat gasket being provided with a plurality of pressure-bearing portions evenly distributed with a circle as the axis, and being embedded in the rubber gasket, the lower side wall of the bolt being provided with a plurality of telescopic movable blocks, and the bolt being provided with a screw for pushing the movable block out.

[0007] Preferably, a contact surface is provided above the screw rod of the bolt, and a plurality of first through holes are provided on the side wall below the bolt with the circle as the axis, and limiting grooves are provided on both sides of the first through holes.

[0008] Preferably, a second through hole is provided in the bolt, a thread groove is provided in the upper half of the second through hole, and a cover plate is provided at the bottom of the second through hole.

[0009] Preferably, the rubber pad is provided with a pressure-bearing groove corresponding to the pressure-bearing portion, and the anti-slip portion is arranged to be inclined in a straight line and abuts against the contact surface.

[0010] Preferably, the movable block is slidably arranged in the first through hole, and limit blocks are provided on both sides of the movable block. The limit block is provided with at least one cylinder, and the outer wall of the cylinder is provided with a first spring and abuts against the limit groove. The movable block is provided with an arc-shaped first resistance portion, and the back of the movable block is provided with an inclined surface.

[0011] Preferably, the screw is threadedly connected to the thread groove, the end surface of the screw is provided with a blind hole, the blind hole is provided with a second spring and abuts the cover plate, and the end of the screw is provided with a conical second abutting portion and abuts the inclined surface.

[0012] Preferably, the thread groove of the screw rod of the bolt is arranged between the abutment surface and the first through hole.

[0013] Beneficial effects:

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model discloses that as the bolt is gradually tightened, the flat gasket drives the rubber gasket to rotate and deform through the pressure-bearing part, thereby causing it to shrink toward the axial direction, so that the anti-slip part is tightly pressed against the screw surface of the bolt, thereby increasing the friction between the bolt and the rubber gasket; the spring gasket is squeezed by the bolt and releases elastic force to the bolt, thereby increasing the tightness of the connection between the bolt and the mounting hole, and further increasing the friction and locking force; the movable block is pushed by the screw to tightly abut the inner wall of the mounting hole, thereby further increasing the tightness and friction of the connection between the bolt and the mounting hole; through the above design, the cylinder head, cylinder body and fastening assembly are prevented from loosening, and the sealing performance of the cylinder head, cylinder body and sealing gasket is effectively improved, so that the product has the advantages of stable connection and improved locking force. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a tightly connected cylinder head according to the present invention;

[0017] Figure 2 This is a top view of a tightly connected cylinder head according to the present invention;

[0018] Figure 3 This is a schematic side cross-sectional structure diagram of a tightly connected cylinder head of the present invention;

[0019] Figure 4 The utility model is a kind of explosion-proof device for cylinder head with tight connection Figure 1 ;

[0020] Figure 5 For this utility model Figure 4A partial enlarged view of a tightly connected cylinder head;

[0021] Figure 6 The utility model is a kind of explosion-proof device for cylinder head with tight connection Figure 2 ;

[0022] The corresponding relationship between the illustration labels and component names in the figure is as follows:

[0023] Reference numerals: 1, cylinder head; 2, fastening assembly; 3, bolt; 4, spring washer; 5, flat washer; 6, rubber gasket; 7, screw; 8, cover plate; 9, movable block;

[0024] 11. Mounting hole;

[0025] 31. Interference surface; 32. First through hole; 33. Limiting groove; 34. Second through hole; 35. Thread groove;

[0026] 51. Pressure-bearing part;

[0027] 61. Anti-slip portion; 62. Pressure-bearing groove;

[0028] 71. Blind hole; 72. Second spring; 73. Second contact portion;

[0029] 91. Limit block; 92. Cylinder; 93. First spring; 94. First contact portion; 95. Inclined surface. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0032] In the embodiments of the present invention, "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0033] Reference example Figures 1 to 6 A tightly connected cylinder head includes a cylinder head 1, which is provided with a plurality of mounting holes 11. The mounting holes 11 are provided with fastening components 2. The fastening components 2 include bolts 3, spring washers 4, flat washers 5, and rubber gaskets 6. The spring washers 4, flat washers 5, and rubber gaskets 6 are sequentially sleeved on the bolts 3. The inner wall of the rubber gasket 6 is evenly distributed with a plurality of anti-slip portions 61 with a dot as the axis, and fits the outer wall of the bolt 3. The flat gasket 5 is evenly distributed with a plurality of pressure-bearing portions 51 with a dot as the axis, and is embedded in the rubber gasket 6. The lower side wall of the bolt 3 is provided with a plurality of telescopic movable blocks 9. The bolt 3 is provided with a screw 7 for pushing the movable block 9 out. As the bolt 3 is gradually tightened, The flat gasket 5 drives the rubber gasket 6 to rotate and deform through the pressure-bearing part 51, thereby causing it to shrink toward the axial direction, so that the anti-slip part 61 is tightly pressed against the screw surface of the bolt 3, thereby increasing the friction between the bolt 3 and the rubber gasket 6; the spring gasket 4 is squeezed by the bolt 3 and releases elastic force to the bolt 3, thereby increasing the tightness of the connection between the bolt 3 and the mounting hole 11, further increasing the friction and locking force; the movable block 9 is pushed by the screw 7 to tightly abut the inner wall of the mounting hole 11, thereby further increasing the tightness and friction between the bolt 3 and the mounting hole 11; through the above design, the cylinder head 1, cylinder block and fastening assembly 2 are prevented from loosening, and the sealing performance of the cylinder head 1, cylinder block and sealing gasket is effectively improved;

[0034] It is worth mentioning that a contact surface 31 is provided above the screw rod of the bolt 3, and a plurality of first through holes 32 are provided on the side wall below the bolt 3 with the dot as the axis. Limiting grooves 33 are provided on both sides of the first through holes 32. The contact surface 31 increases the friction with the anti-slip portion 61, the first through holes 32 provide a guide for the movable block 9, and the limiting grooves 33 cooperate with the cylinder 92.

[0035] It is worth mentioning that a second through hole 34 is provided in the bolt 3, a threaded groove 35 is provided in the upper half of the second through hole 34, and a cover plate 8 is provided at the bottom of the second through hole 34. The threaded groove 35 is used in conjunction with the screw 7. The cover plate 8 provides support for the second spring 72. At the same time, the cover plate 8 also protects the movable block 9.

[0036] It is worth mentioning that the rubber gasket 6 is provided with a pressure-bearing groove 62 corresponding to the pressure-bearing portion 51. The anti-slip portion 61 is arranged at an inline angle and abuts the contact surface 31. The pressure-bearing groove 62 increases the efficiency of force transmission by the pressure-bearing portion 51. The anti-slip portion 61 is arranged at an angle to increase the contact area with the screw rod of the bolt 3, further improving the friction force.

[0037] It is worth mentioning that the movable block 9 is slidably arranged in the first through hole 32, and limit blocks 91 are provided on both sides of the movable block 9. The limit block 91 is provided with at least one cylinder 92. The outer wall of the cylinder 92 is provided with a first spring 93 and abuts the limit groove 33. The movable block 9 is provided with an arc-shaped first contact portion 94, and the back of the movable block 9 is provided with an inclined surface 95. The cylinder 92 prevents the first spring 93 from escaping. At the same time, it also limits the distance that the movable block 9 extends out of the first through hole 32, thereby protecting the first spring 93 from excessive compression. The first contact portion 94 fits the inner curved surface of the mounting hole 11 to increase the contact area and further improve the friction force. The first spring 93 resets the movable block 9.

[0038] It is worth mentioning that the screw 7 is threadedly connected to the thread groove 35, and the end surface of the screw 7 is provided with a blind hole 71. The blind hole 71 is provided with a second spring 72 and abuts the cover plate 8. The end of the screw 7 is provided with a conical second interference portion 73 and abuts the inclined surface 95. When the second interference portion 73 abuts the inclined surface 95, as the screw 7 gradually descends, the second spring 72 is squeezed and energy is stored. The second interference portion 73 pushes the movable block 9 to move in the direction of the limiting groove 33 and compresses the first spring 93 until the rotating screw 7 has great resistance. The second spring 72 releases the upward elastic force to the blind hole 71, so that the screw 7 fits tightly with the thread groove 35, increases friction, and prevents the screw 7 from loosening.

[0039] It is worth mentioning that the thread groove of the screw of the bolt 3 is arranged between the contact surface 31 and the first through hole 32. The above design prevents the thread groove from reducing the contact area between the anti-slip portion 61 and the screw, thereby reducing friction.

[0040] The above design solution can enable the product to achieve the advantages of stable connection and improved locking force.

[0041] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as falling within the scope of protection determined by the claims submitted for the present invention.

Claims

1. A tightly connected cylinder head, comprising a cylinder head (1), wherein the cylinder head (1) is provided with a plurality of mounting holes (11), wherein the mounting holes (11) are provided with fastening assemblies (2), and wherein: The fastening assembly (2) includes a bolt (3), a spring washer (4), a flat washer (5), and a rubber gasket (6). The spring washer (4), the flat washer (5), and the rubber gasket (6) are sequentially sleeved on the bolt (3). The inner wall of the rubber gasket (6) is evenly distributed with a circle as the axis and is fitted with the outer wall of the bolt (3). The flat gasket (5) is evenly distributed with a circle as the axis and is embedded in the rubber gasket (6). The lower side wall of the bolt (3) is provided with a plurality of telescopic movable blocks (9), and the bolt (3) is provided with a screw (7) for pushing the movable block (9) to extend.

2. The tightly connected cylinder head according to claim 1, characterized in that: A contact surface (31) is provided above the screw rod of the bolt (3), and a plurality of first through holes (32) are provided on the side wall below the bolt with a circle as the axis. Limiting grooves (33) are provided on both sides of the first through holes (32).

3. The tightly connected cylinder head according to claim 2, characterized in that: A second through hole (34) is provided in the bolt (3), a thread groove (35) is provided in the upper half of the second through hole (34), and a cover plate (8) is provided at the bottom of the second through hole (34).

4. The tightly connected cylinder head according to claim 2, characterized in that: The rubber pad (6) is provided with a pressure-bearing groove (62) corresponding to the pressure-bearing portion (51), and the anti-slip portion (61) is arranged in a straight line and abuts against the contact surface (31).

5. The tightly connected cylinder head according to claim 3, characterized in that: The movable block (9) is slidably arranged in the first through hole (32), and limit blocks (91) are provided on both sides of the movable block (9), and the limit block (91) is provided with at least one cylinder (92), and the outer wall of the cylinder (92) is provided with a first spring (93) and abuts against the limit groove (33), and the movable block (9) is provided with an arc-shaped first contact portion (94), and the back of the movable block (9) is provided with an inclined surface (95).

6. The tightly connected cylinder head according to claim 5, characterized in that: The screw (7) is threadedly connected to the thread groove (35); a blind hole (71) is provided on the end surface of the screw (7); the blind hole (71) is provided with a second spring (72) and abuts against the cover plate (8); and a conical second abutting portion (73) is provided at the end of the screw (7) and abuts against the inclined surface (95).

7. The tightly connected cylinder head according to any one of claims 2 to 6, characterized in that: The thread groove of the screw rod of the bolt (3) is arranged between the contact surface (31) and the first through hole (32).

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