Fixing mechanism of engine cylinder cover

Abstract

The utility model relates to the technical field of engine cylinder covers, in particular to an engine cylinder cover fixing mechanism which comprises an engine cylinder cover body, connecting bosses fixedly arranged on the two sides of a maintenance opening of the engine cylinder cover body, a cover cap and fixing insertion pieces arranged on the two sides of the cover cap. The upper surface of the connecting boss is provided with an inserting opening penetrating into the connecting boss, the bottom face of the inserting opening of the connecting boss is provided with a clamping opening in the width direction of the connecting boss, the lower end of the fixing inserting piece is provided with a containing groove, an inserting block is arranged in the containing groove, and a supporting spring used for abutting against the inserting block to stretch into the clamping opening is arranged in the containing groove. One end of the supporting spring is fixedly connected to the inserting block, the other end of the supporting spring is fixedly connected to the fixing inserting piece, a switch structure used for ejecting out the inserting block is arranged on the upper surface of the connecting boss, the inserting block is retracted into the containing groove by pushing the switch column, and then the cover cap can be detached from the engine cylinder cover body.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of an engine cylinder cover, in particular to a fixing mechanism of an engine cylinder cover. BACKGROUND

[0002] The engine cylinder cover, i.e. a motorcycle engine cylinder cover, is a component installed on a cylinder body, seals the cylinder from the top, forms a combustion chamber, and then a cover is further installed on the engine cylinder cover.

[0003] In the prior art, the cover is usually connected by bolts, a connecting platform is arranged around a maintenance opening of the engine cylinder cover body, a corresponding fixing platform is arranged on the cover, after a sealing rubber is placed around the edge of the maintenance opening of the engine cylinder cover body, the cover is covered on the maintenance opening of the engine cylinder cover body, and then the fixing bolts are screwed to pass through the fixing platform and the connecting platform to fix the cover.

[0004] However, the engine is not frequently maintained, and water splashes are easily splashed on the fixing bolts during the driving of the motorcycle, which causes the fixing bolts to age, and when the engine needs to be maintained, the aged fixing bolts are difficult to screw, which causes the engine maintenance to be very troublesome, and therefore a fixing mechanism for conveniently opening the cover is required. CONTENT OF THE UTILITY MODEL

[0005] In view of the defects in the prior art, the application aims to provide a fixing mechanism of an engine cylinder cover, which solves the technical problem that the aged fixing bolts in the prior art cause the engine maintenance to be very troublesome.

[0006] The above-mentioned purpose of the application is achieved by the following technical scheme: a fixing mechanism of an engine cylinder cover, comprising an engine cylinder cover body, connecting bosses fixedly arranged on both sides of a maintenance opening of the engine cylinder cover body, a cover, and fixing inserts arranged on both sides of the cover, an inserting port is arranged on the upper surface of the connecting boss and penetrates into the interior of the connecting boss, a clamping port is arranged on the bottom surface of the inserting port of the connecting boss along the width direction of the connecting boss, a receiving groove is arranged at the lower end of the fixing insert, an inserting block is arranged in the receiving groove, a supporting spring is arranged in the receiving groove and used for extending into the clamping port and abutting against the inserting block, one end of the supporting spring is fixedly connected to the inserting block, the other end of the supporting spring is fixedly connected to the fixing insert, and the upper surface of the connecting boss is provided with a switch structure used for ejecting the inserting block.

[0007] Further, the switch structure comprises a connecting port arranged on the upper surface of the connecting boss and communicating with the clamping port, and a switch column inserted into the connecting port, one end of the switch column extends into the clamping port, and the other end of the switch column extends out of the connecting boss.

[0008] By adopting the technical scheme, when the cover is installed on the engine cylinder cover body, first, the cover is placed at the maintenance opening of the engine cylinder cover body, the fixing tab is aligned with the insertion port on the connecting boss, then the insertion block is pushed into the receiving groove, the cover is pushed, the fixing tab is inserted into the insertion port, when the bottom end of the fixing tab contacts the bottom surface of the insertion port, the insertion block is also aligned with the clamping port, at this time, the support spring pushes the insertion block to extend into the clamping port to lift the switch column, so that the cover is fixed, when the engine cylinder cover body needs to be maintained, the switch column is pushed to make the insertion block retract into the receiving groove, so that the cover can be disassembled from the engine cylinder cover body, so that the maintenance of the engine cylinder cover body by the worker is more convenient.

[0009] Further, the end of the insertion block away from the support spring is provided with a circular arc part, and the end of the switch column extending into the clamping port is provided with a circular arc part.

[0010] By adopting the technical scheme, the circular arc part makes it more labor-saving when the switch column presses the insertion block to retract into the receiving groove, and also makes it more labor-saving when the insertion block lifts the switch column, and the fixing tab extending into the insertion port also does not need to push the insertion block to retract into the receiving groove, when the circular arc part of the insertion block contacts the connecting boss, only the pressure on the cover is needed, and the circular arc part will retract into the receiving groove along the connecting boss.

[0011] Further, the connecting port is provided with a limiting structure for limiting the switch column from being separated from the connecting port.

[0012] Further, the limiting structure comprises vertical sliding grooves provided in the connecting boss on both sides of the connecting port and clamping columns fixedly arranged on both sides of the switch column, the clamping columns extend into the vertical sliding grooves, and the vertical sliding grooves do not pass through the upper surface of the connecting boss.

[0013] By adopting the technical scheme, although the switch structure is provided to make the maintenance of the engine cylinder cover body by the worker more convenient, the motorcycle will vibrate during movement, and the switch column may be thrown out of the connecting port due to vibration, and the limiting structure solves this technical problem, the switch column is slidably connected to the connecting boss through the clamping column, so that the vertical sliding groove can limit the switch column from being separated from the connecting port.

[0014] Further, the edge of the maintenance opening of the engine cylinder cover body is provided with a connecting groove formed along the shape of the maintenance opening, and the edge of the cover is fixedly provided with an insertion tab with the same shape as the maintenance opening.

[0015] Although the connecting boss and the fixing tab make the maintenance of the engine cylinder cover body more convenient, the sealing rubber at the connection between the engine cylinder cover body and the cover is not subjected to great pressure after they are connected by the connecting boss and the fixing tab, which leads to poor sealing at the connection between the engine cylinder cover body and the cover, and the setting of the inserting tab and the connecting slot solves this technical problem, the inserting tab is inserted into the connecting slot when the inserting tab of the cover is aligned with the connecting slot and the cover is pushed towards the engine cylinder cover body, the inserting tab extends into the connecting slot against the sealing rubber, and thus the sealing at the connection between the engine cylinder cover body and the cover is improved.

[0016] Further, the periphery of the lower end of the inserting tab is provided with a sealing structure for improving the sealing at the connection between the engine cylinder cover body and the cover.

[0017] Further, the sealing structure comprises a receiving groove formed in the outer periphery of the lower end of the inserting tab and an extruded rubber located in the receiving groove, the receiving groove is provided with a supporting spring for extending out of the receiving groove against the extruded rubber, and the extruded rubber is provided with a circular arc portion away from the supporting spring.

[0018] Although the setting of the inserting tab and the connecting slot improves the sealing at the connection between the engine cylinder cover body and the cover, the sealing rubber inserted into the connecting slot is difficult to take out when the sealing rubber needs to be replaced, which leads to the inconvenience of replacing the sealing rubber, and the setting of the sealing structure solves this technical problem, the supporting spring presses the inner wall of the connecting slot against the extruded rubber after the inserting tab is inserted into the connecting slot, so that the extruded rubber replaces the sealing rubber, the staff need not place the sealing rubber at the connection between the engine cylinder cover body and the cover, and thus the sealing rubber need not be replaced, and the replacement of the extruded rubber only needs to dismount the cover from the engine cylinder cover body.

[0019] In summary, the present application has at least one of the following beneficial technical effects:

[0020] Through the setting of the connecting boss, the fixing tab and the switch structure, when the cover is installed on the engine cylinder cover body, the cover is first placed at the maintenance opening of the engine cylinder cover body, the fixing tab is aligned with the inserting port on the connecting boss, the inserting block is then pushed into the receiving slot, and the cover is pushed to make the fixing tab inserted into the inserting port, when the bottom end of the fixing tab contacts the bottom surface of the inserting port, the inserting block is also aligned with the clamping port, the supporting spring pushes the inserting block to extend into the clamping port to lift the switch column, and thus the cover is fixed, when the engine cylinder cover body needs to be maintained, the switch column is pushed to make the inserting block shrink into the receiving slot, and thus the cover can be dismounted from the engine cylinder cover body, and the maintenance of the engine cylinder cover body is more convenient.

[0021] Through the arrangement of the sealing structure, after the insertion piece is inserted into the connecting groove, the supporting top spring presses the extruded rubber to compress the inner wall of the connecting groove, so that the extruded rubber replaces the sealing rubber, so that the staff does not need to place the sealing rubber at the connecting position of the engine cylinder cover body and the cover, and the sealing rubber does not need to be replaced, the replacement of the extruded rubber only needs to disassemble the cover from the engine cylinder cover body, which improves the sealing performance of the connecting position of the engine cylinder cover body and the cover, and makes the staff more convenient to maintain the engine cylinder cover body. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic view of the overall structure of the embodiment;

[0023] Figure 2 is a sectional view along the A-A line in Figure 1

[0024] Figure 3 is an enlarged view of part A in Figure 2

[0025] Figure 4 is an enlarged view of part B in Figure 3

[0026] Reference signs: 1, engine cylinder cover body; 10, connecting boss; 11, insertion port; 12, clamping port; 13, connecting groove; 2, cover; 20, fixed insertion piece; 21, receiving groove; 22, insertion block; 23, supporting spring; 24, insertion piece; 3, switch structure; 30, connecting port; 31, switch column; 4, limiting structure; 40, vertical sliding groove; 41, clamping column; 5, sealing structure; 50, receiving groove; 51, extruded rubber; 53, supporting top spring. DETAILED DESCRIPTION

[0027] The application will be further described in detail below with reference to the accompanying drawings.

[0028] The embodiment, with reference to Figure 1 , Figure 2 , Figure 3 , Figure 4 ​​​The utility model provides a kind of fixing mechanism of engine cylinder cover, including engine cylinder cover body 1, the connecting boss 10 of maintenance opening both sides of engine cylinder cover body 1 being fixedly arranged, cover 2 and the fixed insert piece 20 being arranged in cover 2 both sides, the bottom surface of the fixed insert piece 20 is relative to the upper surface of connecting boss 10, the upper surface of connecting boss 10 is equipped with the insertion interface 11 being passed to the inside of connecting boss 10, the bottom surface of the insertion interface 11 of connecting boss 10 is equipped with the clamping interface 12 along the width direction of connecting boss 10, the lower end of the fixed insert piece 20 is equipped with the receiving groove 21, the insertion block 22 is equipped in the receiving groove 21, the supporting spring 23 for being inserted into the clamping interface 12 by the insertion block 22 is equipped in the receiving groove 21, one end of the supporting spring 23 is fixedly connected to insertion block 22, the other end is fixedly connected to fixed insert piece 20, the upper surface of connecting boss 10 is equipped with the switch structure 3 for ejecting insertion block 22, switch structure 3 includes the connecting port 30 being communicated with clamping interface 12 in the upper surface of connecting boss 10 and the switch column 31 being inserted in connecting port 30, one end of the switch column 31 is inserted into clamping interface 12, the other end is projected from connecting boss 10, when cover 2 is installed on engine cylinder cover body 1, first, cover 2 is placed at the maintenance opening of engine cylinder cover body 1, so that fixed insert piece 20 is aligned with the insertion interface 11 on connecting boss 10, then insertion block 22 is pushed into receiving groove 21, and then cover 2 is pushed, so that fixed insert piece 20 is inserted into insertion interface 11, when the bottom end of fixed insert piece 20 contacts the bottom surface of insertion interface 11, insertion block 22 is also aligned with clamping interface 12, at this time, supporting spring 23 pushes insertion block 22 to be inserted into clamping interface 12 and lifts switch column 31, so as to fix cover 2, when engine cylinder cover body 1 needs to be maintained, insertion block 22 is retracted into receiving groove 21 by pushing switch column 31, so that cover 2 can be detached from engine cylinder cover body 1, so that the maintenance of engine cylinder cover body 1 by staff is more convenient.

[0029] In the embodiment, the end of the insertion block 22 away from the supporting spring 23 is provided with a circular arc portion, and the end of the switch column 31 inserted into the clamping interface 12 is provided with a circular arc portion. The circular arc portions make it more labor-saving when the switch column 31 is pressed to retract the insertion block 22 into the receiving groove 21, and also make it more labor-saving when the insertion block 22 lifts the switch column 31. In addition, the insertion block 22 does not need to be retracted into the receiving groove 21 when the fixed insert piece 20 is inserted into the insertion interface 11. When the circular arc portion of the insertion block 22 contacts the connecting boss 10, only pressure needs to be applied to the cover 2, and the circular arc portion will rub against the connecting boss 10 and retract into the receiving groove 21.

[0030] Although the arrangement of the switch structure 3 makes it more convenient for the staff to maintain the engine cylinder cover body 1, the motorcycle will vibrate during movement, and the switch column 31 may be shaken out of the connecting port 30 due to vibration. In order to solve this technical problem, the embodiment is provided with a limiting structure 4 in the connecting port 30 for limiting the switch column 31 from being separated from the connecting port 30. The limiting structure 4 includes vertical sliding grooves 40 provided in the connecting boss 10 on both sides of the connecting port 30 and clamping columns 41 fixedly arranged on both sides of the switch column 31. The clamping columns 41 extend into the vertical sliding grooves 40. The vertical sliding grooves 40 do not pass through the upper surface of the connecting boss 10. The switch column 31 is slidingly connected to the connecting boss 10 through the clamping columns 41, so that the vertical sliding grooves 40 can limit the switch column 31 from being separated from the connecting port 30.

[0031] Although the arrangement of the connecting boss 10 and the fixed insert 20 makes it more convenient for the staff to maintain the engine cylinder cover body 1, after the engine cylinder cover body 1 and the cover 2 are connected through the connecting boss 10 and the fixed insert 20, the sealing rubber at the connecting part between them cannot be subjected to a large pressure, resulting in poor sealing performance of the connecting part between the engine cylinder cover body 1 and the cover 2. In order to solve this technical problem, the embodiment is provided with a connecting groove 13 along the shape of the maintenance port edge of the engine cylinder cover body 1. The edge of the cover 2 is fixedly provided with an insert piece 24 with the same shape as the maintenance port. The insert piece 24 of the cover 2 is aligned with the connecting groove 13, and then the cover 2 is pushed towards the engine cylinder cover body 1. When the insert piece 24 is inserted into the connecting groove 13, the insert piece 24 extends into the connecting groove 13 against the sealing rubber, so as to improve the sealing performance of the connecting part between the engine cylinder cover body 1 and the cover 2.

[0032] Although the arrangement of the insert piece 24 and the connecting groove 13 improves the sealing performance of the connecting part between the engine cylinder cover body 1 and the cover 2, when the sealing rubber needs to be replaced, the sealing rubber pressed into the connecting groove 13 is difficult to take out, resulting in inconvenience in replacing the sealing rubber. In order to solve this technical problem, the embodiment is provided with a sealing structure 5 around the lower end of the insert piece 24 for improving the sealing performance of the connecting part between the engine cylinder cover body 1 and the cover 2. The sealing structure 5 includes a receiving groove 50 provided on the outer periphery of the lower end of the insert piece 24 and an extrusion rubber 51 in the receiving groove 50. The receiving groove 50 is provided with a support top spring 53 for pressing the extrusion rubber 51 out of the receiving groove 50. One end of the extrusion rubber 51 away from the support top spring 53 is provided with a circular arc part. After the insert piece 24 is inserted into the connecting groove 13, the support top spring 53 presses the inner wall of the connecting groove 13 against the extrusion rubber 51, so as to replace the sealing rubber with the extrusion rubber 51. Therefore, the staff does not need to place the sealing rubber at the connecting part between the engine cylinder cover body 1 and the cover 2, and the sealing rubber does not need to be replaced. The replacement of the extrusion rubber 51 only needs to disassemble the cover 2 from the engine cylinder cover body 1.

[0033] Specific implementation process: when installing the cover 2 on the engine cylinder head body 1, first place the cover 2 at the maintenance opening of the engine cylinder head body 1, align the fixing tabs 20 with the insertion interfaces 11 on the connecting bosses 10, then push the cover 2 so that the fixing tabs 20 extend into the insertion interfaces 11 and the insertion tabs 24 extend into the connecting grooves 13, at this time the support springs 23 push the insertion blocks 22 to extend into the clamping interfaces 12 to lift the switch posts 31, and the support top springs 53 push the extruded rubbers 51 to adhere to the inner walls of the connecting grooves 13, thus completing the installation of the cover 2; when the engine cylinder head body 1 needs to be maintained, push the switch posts 31 so that the insertion blocks 22 retract into the receiving grooves 21, and then the cover 2 can be detached from the engine cylinder head body 1.

[0034] The embodiments of the specific implementation are the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An engine head fixing mechanism characterized by comprising: The utility model provides an engine cylinder cover body (1), the connecting boss (10) of maintaining mouth both sides fixed setting in engine cylinder cover body (1), cover (2) and the fixed insert piece (20) of setting in cover (2) both sides, the upper surface of connecting boss (10) is equipped with the insert port (11) of going through to the inside of connecting boss (10), the bottom surface of insert port (11) of connecting boss (10) is equipped with the clamping port (12) along the width direction of connecting boss (10), the lower end of fixed insert piece (20) is equipped with the accommodation groove (21), the accommodation groove (21) is equipped with the insert block (22), the accommodation groove (21) is equipped with the support spring (23) for the insert block (22) that goes into the clamping port (12) of toping, one end of support spring (23) is fixedly connected with insert block (22), the other end is fixedly connected with fixed insert piece (20), the upper surface of connecting boss (10) is equipped with the switch structure (3) for ejecting insert block (22).

2. The engine head securing mechanism of claim 1, wherein The switch structure (3) includes a connecting port (30) that is opened in the upper surface of the connecting boss (10) and communicates with the clamping port (12), and a switch column (31) that is inserted into the connecting port (30).

3. The engine head securing mechanism of claim 2, wherein The end of the insert block (22) away from the support spring (23) is provided with a circular arc part, and the end of the switch column (31) inserted into the clamping port (12) is provided with a circular arc part.

4. The engine cylinder head securing mechanism of claim 2, wherein The connecting port (30) is provided with a limiting structure (4) for limiting the switch column (31) from separating from the connecting port (30).

5. The engine cylinder head securing mechanism of claim 4, wherein The limiting structure (4) includes vertical sliding grooves (40) that are opened in the connecting boss (10) on both sides of the connecting port (30), and clamping columns (41) that are fixedly arranged on both sides of the switch column (31), the clamping columns (41) are inserted into the vertical sliding grooves (40), and the vertical sliding grooves (40) do not pass through the upper surface of the connecting boss (10).

6. The engine cylinder head securing mechanism of claim 1, wherein The edge of the maintenance opening of the engine cylinder cover body (1) is provided with a connecting groove (13) that is opened along the shape of the maintenance opening, and the edge of the cover (2) is fixedly provided with an insert piece (24) that has the same shape as the maintenance opening.

7. The engine cylinder head securing mechanism of claim 6, wherein The periphery of the lower end of the insert piece (24) is provided with a sealing structure (5) for improving the sealing performance of the connection between the engine cylinder cover body (1) and the cover (2).

8. The engine cylinder head securing mechanism of claim 7, wherein, The sealing structure (5) includes an accommodation groove (50) that is opened on the periphery of the lower end of the insert piece (24), and an extruded rubber (51) that is located in the accommodation groove (50), the accommodation groove (50) is provided with a support top spring (53) for extending out of the accommodation groove (50) by pressing the extruded rubber (51), and the end of the extruded rubber (51) away from the support top spring (53) is provided with a circular arc part.

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