Connecting structure of timing gear chamber cover and timing gear chamber
By adopting multiple sealing structures and sealing liquid between the timing gear chamber cover and the timing gear chamber, the existing problem of poor sealing effect is solved, and a more efficient sealing effect is achieved to prevent leakage and external contamination.
Patent Information
- Application Number
- CN202420888915.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-04-26
AI Technical Summary
The existing timing gear chamber cover and timing gear chamber are not sealed well, resulting in oil leakage and external water and dust entering.
A multiple sealing structure is adopted, including a first sealing ring, a first half sealing member and a second half sealing member, forming a sealing space and injecting a sealing liquid to achieve a multi-channel sealing effect.
The sealing effect between the timing gear chamber cover and the timing gear chamber is significantly improved, preventing oil leakage and external water and dust entering, and extending the service life of the seal.
Smart Images
Figure CN222879778U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engines, in particular to a connection structure between a timing gear chamber cover and a timing gear chamber. Background Art
[0002] The timing gear chamber and timing gear cover are one of the main parts of the automobile engine. They are composed of the crankshaft timing gear, camshaft gear, high-pressure oil pump gear, idler gear, etc. Their function is to ensure the valve timing of the diesel engine and the injection timing of the high-pressure oil pump.
[0003] When the timing gear chamber and the timing gear chamber cover are connected, they are fastened with bolts. In order to prevent the internal engine oil from leaking out and to prevent external water and dust from entering the gear chamber, a sealing ring is installed between the two. However, as the sealing ring is used for a long time, its sealing performance may deteriorate due to aging. Another problem is the quality of the sealing ring. When sealing, the sealing ring and the timing gear chamber may have line contact instead of surface contact, resulting in poor overall sealing effect and oil leakage is still prone to occur.
[0004] To this end, we propose a connection structure between the timing gear chamber cover and the timing gear chamber. Summary of the invention
[0005] The utility model aims to provide a connection structure between a timing gear chamber cover and a timing gear chamber, so as to solve the problem of poor sealing effect between the existing timing gear chamber cover and the timing gear chamber proposed in the above background technology.
[0006] To achieve the above purpose, the utility model provides the following technical solutions: a connection structure between a timing gear chamber cover and a timing gear chamber, comprising: a gear chamber body and a gear chamber cover body, wherein the gear chamber cover body is fixed on the top of the gear chamber body, and further comprising:
[0007] A first semi-enclosed member is fixed at the inner edge of the gear chamber body, and a second semi-enclosed member is fixed at the inner edge of the gear chamber cover. After the gear chamber body and the gear chamber cover are connected, the first semi-enclosed member and the second semi-enclosed member form a sealed space, and a sealing liquid is provided in the sealed space;
[0008] A liquid injection hole is installed on the gear chamber cover body, the liquid injection hole is communicated with the second semi-enclosed component, and a sealing plug is sealed in the liquid injection hole.
[0009] Among them, a first groove is opened on the gear chamber body, a second groove is opened on the first semi-enclosed part, a first sealing ring is installed in the first groove, and a second sealing ring is installed in the second groove.
[0010] Wherein, the cross-sections of the first semi-enclosed part and the second semi-enclosed part are quarter circles.
[0011] Among them, multiple groups of extension parts are fixed on the first sealing ring, and an insertion rod is fixed on the bottom of the gear chamber cover body. Barbs are fixed on the outer wall of the insertion rod, and the position of the insertion rod corresponds to the position of the extension part.
[0012] A positioning hole is provided inside the gear chamber body, and the top of the positioning hole is configured to be conical.
[0013] The utility model has at least the following beneficial effects:
[0014] After the gear chamber body and the gear chamber cover body are connected, in addition to the sealing effect brought by the first sealing ring, the first semi-enclosed part and the second semi-enclosed part will also be connected to realize the second sealing structure, and after the first semi-enclosed part and the second semi-enclosed part are connected, a sealing liquid is stored in the sealed space inside the semi-enclosed part, and the sealing liquid also realizes the third sealing structure, realizing multiple sealing between the gear chamber body and the gear cover body and improving its sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 This is a schematic diagram of the structure of the gear chamber cover of the utility model when it is opened;
[0017] Figure 3 This is a schematic diagram of the installation structure of the first sealing ring of the utility model;
[0018] Figure 4 It is a cross-sectional schematic diagram of the connection between the gear chamber body and the gear chamber cover of the utility model;
[0019] Figure 5 For this utility model Figure 4 Enlarged structural diagram at A in the middle.
[0020] In the figure: 1. gear chamber body; 2. gear chamber cover; 3. first semi-enclosed part; 4. second semi-enclosed part; 5. injection hole; 6. sealing plug; 7. first groove; 8. second groove; 9. first sealing ring; 10. second sealing ring; 11. extension part; 12. insertion rod; 13. barb; 14. positioning hole. DETAILED DESCRIPTION
[0021] 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 in 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.
[0022] Embodiment 1
[0023] See also Figures 1 to 5 The utility model provides a technical solution: a connection structure between a timing gear chamber cover and a timing gear chamber, comprising: a gear chamber body 1 and a gear chamber cover body 2, the gear chamber cover body 2 is fixed to the top of the gear chamber body 1 by bolts, and a first groove 7 is opened on the end surface of the gear chamber body 1, a first sealing ring 9 is installed in the first groove 7, and when the gear chamber body 1 and the gear chamber cover body 2 are connected, the first sealing ring 9 seals the two.
[0024] A first semi-enclosed member 3 is fixed to the inner edge of the gear chamber body 1, and a second semi-enclosed member 4 is fixed to the inner edge of the gear chamber cover 2. In this embodiment, the cross-sections of the first semi-enclosed member 3 and the second semi-enclosed member 4 are both quarter-circular. When the gear chamber body 1 is connected to the gear chamber cover 2, the first semi-enclosed member 3 and the second semi-enclosed member 4 are connected together to form a half-circular sealed space.
[0025] A second groove 8 is provided on the end face of the first semi-enclosed member 3, and a second sealing ring 10 is installed in the second groove 8. When the first semi-enclosed member 3 and the second semi-enclosed member 4 are connected, the second sealing ring 10 realizes a second seal at the connection between the gear chamber body 1 and the gear chamber cover 2.
[0026] In addition, an injection hole 5 is opened on the top of the gear chamber cover body 2, and the injection hole 5 is communicated with the second semi-enclosed part 4, and a sealing plug 6 is installed inside the injection hole 5. After the first semi-enclosed part 3 and the second semi-enclosed part 4 are connected, the sealing plug 6 is opened to inject sealing liquid, such as oil or grease, into the sealed space. When the sealing liquid enters the sealed space, the third seal of the gear chamber cover body 2 and the gear chamber body 1 is realized. The multiple sealing structures can effectively prevent water or dust in the external environment from entering the interior of the gear chamber body 1, and can also effectively prevent oil leakage inside the gear chamber body 1.
[0027] Embodiment 2
[0028] A plurality of extension portions 11 are fixed on the outer wall of the first sealing ring 9, and a plurality of insertion rods 12 are fixed on the bottom of the gear chamber cover 2. The positions of the insertion rods 12 and the extension portions 11 correspond one to one, and barbs 13 are fixed on the outer walls of the insertion rods 12. When the gear chamber cover 2 is connected to the gear chamber body 1, the insertion rods 12 on the gear chamber cover 2 are inserted into the extension portions 11. When the first sealing ring 9 needs to be replaced, the gear chamber cover 2 is taken out from the gear chamber body 1. During the process of taking out the gear chamber cover 2, the insertion rods 12 take out the first sealing ring 9 in the first groove 7 through the barbs 13, which is more convenient than the existing method of prying it out with a screwdriver.
[0029] It should be added that, since the gear chamber body 1 and the gear chamber cover body 2 are installed by multiple bolts, positioning is required during installation. The general positioning method is to set a positioning cylinder in the gear chamber body 1 and install a positioning rod on the gear chamber cover body 2. However, during installation, the positioning rod and the positioning cylinder are both located on the inside, which is inconvenient for the installer to install and the positioning is not convenient enough. Therefore, a positioning hole 14 is opened inside the gear chamber body 1, and the positioning hole 14 is set to be a cone with a larger opening at the top and a smaller opening at the bottom. The positioning rod on the gear chamber cover body 2 is more convenient and accurate when positioning with the positioning hole 14, so that the user can assemble the gear chamber cover body 2 conveniently.
[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. The connection structure between the timing gear chamber cover and the timing gear chamber includes: A gear chamber body (1) and a gear chamber cover (2), wherein the gear chamber cover (2) is fixed on the top of the gear chamber body (1), and is characterized in that it also includes: A first semi-enclosed member (3) is fixed at the inner edge of the gear chamber body (1), and a second semi-enclosed member (4) is fixed at the inner edge of the gear chamber cover (2); after the gear chamber body (1) is connected to the gear chamber cover (2), the first semi-enclosed member (3) and the second semi-enclosed member (4) form a sealed space, and a sealing liquid is provided in the sealed space; The gear chamber cover (2) is provided with a liquid injection hole (5), the liquid injection hole (5) is communicated with the second semi-enclosed component (4), and a sealing plug (6) is sealedly installed in the liquid injection hole (5).
2. The connection structure between the timing gear chamber cover and the timing gear chamber according to claim 1, characterized in that: The gear chamber body (1) is provided with a first groove (7), the first semi-enclosed member (3) is provided with a second groove (8), a first sealing ring (9) is installed in the first groove (7), and a second sealing ring (10) is installed in the second groove (8).
3. The connection structure between the timing gear chamber cover and the timing gear chamber according to claim 2, characterized in that: The cross-sections of the first semi-enclosed member (3) and the second semi-enclosed member (4) are quarter circles.
4. The connection structure between the timing gear chamber cover and the timing gear chamber according to claim 2, characterized in that: A plurality of groups of extensions (11) are fixed on the first sealing ring (9), an insertion rod (12) is fixed on the bottom of the gear chamber cover (2), barbs (13) are fixed on the outer wall of the insertion rod (12), and the position of the insertion rod (12) corresponds to the position of the extensions (11).
5. The connection structure between the timing gear chamber cover and the timing gear chamber according to claim 1, characterized in that: A positioning hole (14) is provided inside the gear chamber body (1), and the top of the positioning hole (14) is configured to be conical.