Sealed crankcase

Abstract

The utility model provides a sealed crankcase and belongs to the field of crankcases. The sealing structure solves the problem that oil leakage is prone to occurring in the using process due to the fact that the sealing performance of a gap between two shells is poor after the two shells are fixed through bolts, comprises the two shells which are buckled with each other, and is characterized in that a plurality of sealing pieces which are spliced with each other are arranged between the two shells, and the sealing pieces are arranged between the two shells. Stepped structures in opposite directions are arranged at the two ends of the sealing part, a first step, a second step and a third step are arranged at one end of the sealing part, a fourth step, a fifth step and a sixth step are arranged at the other end of the sealing part, sliding buckles are arranged on the first step and the second step, and sliding grooves matched with the sliding buckles are formed in the fourth step and the fifth step. Hole grooves are further formed in the second step and the fourth step, sealing rings connected with the hole grooves are arranged on the inner walls of the hole grooves, and the sealing rings extend outwards to form attaching parts used for auxiliary sealing.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of crankcase, in particular to a sealed crankcase. BACKGROUND

[0002] The crankcase is the part of the lower cylinder block for installing the crankshaft, which is composed of two housings by screwing and interlocking, but the sealing performance of the gap between the two housings is poor after screwing, which leads to the phenomenon of oil leakage in the use process. SUMMARY

[0003] The utility model discloses a sealed crankcase which aims at the above problems in the prior art.

[0004] The utility model discloses a sealed crankcase, which comprises two mutually interlocked housings, characterized in that a plurality of mutually spliced sealing elements are arranged between the two housings.

[0005] The sealing element is provided with opposite direction stepped structures at both ends, one end of the sealing element is stepped one, stepped two and stepped three, and the other end is stepped four, stepped five and stepped six.

[0006] The stepped one and the stepped two are provided with sliding buckles, and the stepped four and the stepped five are provided with sliding grooves matched with the sliding buckles.

[0007] A hole groove is further provided on the stepped two and the stepped four, a sealing ring connected with the hole groove is arranged on the inner wall of the hole groove, and the sealing ring extends outward to form a fitting part for auxiliary sealing.

[0008] In the sealed crankcase, a plurality of bolt holes for fixing bolts are formed on the housing.

[0009] In the sealed crankcase, the position of the hole groove corresponds to the position of the bolt hole.

[0010] Compared with the prior art, the sealed crankcase fills the gap between the two housings with a plurality of sealing elements, thereby improving the sealing performance. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the main body schematic diagram of the sealed crankcase housing;

[0012] Figure 2 It is the schematic diagram of a plurality of mutually spliced sealing elements;

[0013] Figure 3 It is the local section view of the sealing element.

[0014] In the figure, 1, shell; 2, sealing element; 3, step one; 4, step two; 5, step three; 6, step four; 7, step five; 8, step six; 9, slide buckle; 10, slide groove; 11, hole groove; 12, sealing ring; 13, fitting part; 14, bolt hole. DETAILED DESCRIPTION

[0015] The following is a specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0016] As Figure 1 , Figure 2 , Figure 3 shown, the sealed crankcase, including two mutually buckled shell 1, characterized in that, between the two shell 1 is provided with a plurality of mutually spliced sealing element 2;

[0017] Sealing element 2 both ends are provided with opposite direction step structure, sealing element 2 one end is step one 3, step two 4 and step three 5, the other end is step four 6, step five 7 and step six 8;

[0018] Step one 3 and step two 4 are provided with slide buckle 9, step four 6 and step five 7 are provided with slide groove 10 for cooperating with slide buckle 9;

[0019] Sealing element 2 is the structure design of mutual splicing, can be disassembled and replaced after individual sealing element 2 damage;

[0020] Sealing element 2 both ends are three step structure, can effectively increase the contact surface between the gap after splicing of each sealing element 2, increase the fit between sealing element 2, the cross section of slide buckle 9 is two symmetrical "S" type arc, when the shell 1 is installed, sealing element 2 will be extruded, slide buckle 9 will be extruded to the upper end to both sides, thereby strengthening the connection between sealing element 2, also increase the sealing property.

[0021] Hole groove 11 is further provided on step two 4 and step four 6, sealing ring 12 is arranged on the inner wall of hole groove 11 and connected with hole groove 11, fitting part 13 is outwardly extended from sealing ring 12 for auxiliary sealing, a plurality of bolt holes 14 are arranged on shell 1 for installing bolt, hole groove 11 is used for the bolt, fitting part 13 is used for fitting on the inner wall of bolt hole 14, when the bolt passes, fitting part 13 is extruded to fill the gap between bolt and bolt hole 14, realize the sealing of bolt hole 14.

[0022] Further, the position of hole groove 11 corresponds to the position of bolt hole 14.

[0023] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0024] Although the terms such as housing 1, seal 2, step one 3, step two 4, step three 5, step four 6, step five 7, step six 8, slide buckle 9, slide groove 10, hole groove 11, sealing ring 12, fitting part 13, bolt hole 14 are used more in this paper, but it does not exclude the possibility of using other terms. The use of these terms is only to facilitate the description and explanation of the essence of the present application; any additional limitation on their interpretation is contrary to the spirit of the present application.

Claims

1. A sealed crankcase comprising two mutually interlocked housings (1), characterised in that, A plurality of sealing elements (2) are arranged between the two housings (1) and are mutually fitted together; The sealing element (2) is provided with opposite direction stepped structures at both ends, one end of the sealing element (2) is stepped one (3), stepped two (4) and stepped three (5), the other end is stepped four (6), stepped five (7) and stepped six (8); The stepped one (3) and the stepped two (4) are provided with slide buckles (9), the stepped four (6) and the stepped five (7) are provided with slide grooves (10) for cooperating with the slide buckles (9); The stepped two (4) and the stepped four (6) are further provided with hole grooves (11), the inner wall of the hole groove (11) is provided with a sealing ring (12) connected with the hole groove (11), the sealing ring (12) extends outwardly to assist sealing of the fitting part (13).

2. A sealed crankcase according to claim 1, characterized in that The housing (1) is provided with a plurality of bolt holes (14) for mounting and fixing bolts.

3. A sealed crankcase according to claim 2, wherein The position of the hole groove (11) corresponds to the position of the bolt hole (14).

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