A high-strength valve guide for automobile engines

Abstract

The utility model discloses a high-strength valve guide for automobile engines, comprising a guide body, a threaded sleeve connected to the end of the guide body, a mounting sleeve provided on the outer thread of the threaded sleeve, a fitting disk provided on the end of the mounting sleeve, a notch provided inside the mounting sleeve, a fastening assembly provided inside the notch, and a plurality of telescopic rods fixedly installed between the second fixing block and the first fixing block. The threaded sleeve in the utility model will contact the threads provided by the second fixing block and the first fixing block through the cooperation of the threads, so that the telescopic rod between the second fixing block and the first fixing block drives the spring to open, so that the fastening lines of the second fixing block and the first fixing block are fixed to the inner wall of the valve while the second fixing block and the first fixing block are opened, thereby increasing the stability between the valve and the guide tube, so that the guide tube will not be worn due to vibration when the engine is started, and the installation is also more convenient, and there is no risk of falling off.

Description

Technical Field

[0001] The utility model belongs to the technical field of valve guides, and in particular relates to a high-strength valve guide for automobile engines. Background Art

[0002] The automobile engine valve guide is an important component of the engine. It is a guide device for the automobile engine valve. It guides the valve and transfers the heat on the valve stem to the cylinder head through the valve guide.

[0003] For example, the publication number CN 216811818 U3 proposes a valve guide for an automobile engine. A guide body is formed with a valve guide hole axially through it, and an upper combined chamfer is formed on the outer periphery of the upper end of the guide body to improve the assembly accuracy, and a lower combined chamfer is formed on the outer periphery of the lower end of the guide body to improve the assembly accuracy; the upper combined chamfer is composed of a first upper arc surface, a first upper conical surface, and a second upper arc surface connected in sequence; the lower combined chamfer is composed of a first lower arc surface, a first lower conical surface, a second lower arc surface, a second lower conical surface, and a third lower arc surface connected in sequence. The utility model has high assembly accuracy, good sealing, easy processing, long service life, and impact resistance.

[0004] However, in the implementation of relevant technologies, it was found that the above-mentioned automobile engine valve guide still has the following problems: the above-mentioned device does not have relevant fastening components during actual use, because the vibration generated by engine startup is easy to wear the valve guide, and the installation method of the above-mentioned valve guide is relatively simple, there is a risk of falling off, and it is also relatively poor, so that the practicality is limited to a certain extent. Therefore, an improvement is now made to a high-strength valve guide for automobile engines. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a high-strength valve guide for an automobile engine. The contact area with the valve can be increased by a fastening component, thereby improving the reinforced strength. At the same time, the threaded sleeve, the mounting sleeve and the valve guide are all made of gray cast iron material with high strength toughness to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model proposes a high-strength valve guide for an automobile engine, comprising a guide body, the end of the guide body being connected to a threaded sleeve, the external thread sleeve of the threaded sleeve being provided with a mounting sleeve, the end of the mounting sleeve being provided with a fitting disk, the interior of the mounting sleeve being provided with a notch, the interior of the notch being provided with a fastening assembly, the fastening assembly comprising a second fixed block and a first fixed block movably sleeved inside the notch, a plurality of telescopic rods being fixedly installed between the second fixed block and the first fixed block, and the outer sleeves of the plurality of telescopic rods being provided with springs.

[0007] Preferably, a threaded hole is provided inside the mounting sleeve, and the threaded sleeve is threadably matched with the mounting sleeve.

[0008] Preferably, the second fixing block and the first fixing block are provided with threads on their outer surfaces close to the threaded sleeve, and the threads cooperate with the outer threads of the threaded sleeve.

[0009] Preferably, mounting blocks are fixedly connected to the outside of both sides of the second fixed block and the first fixed block, sliders are fixedly connected to both ends of the mounting blocks, a sliding groove is provided on one side of the mounting sleeve close to the slider, and the sliding groove is slidably connected to the slider.

[0010] Preferably, the second fixing block and the first fixing block are both provided with fastening lines on their exteriors.

[0011] Preferably, the threaded sleeve, the mounting sleeve and the catheter body are all made of grey cast iron.

[0012] The high-strength valve guide for automobile engines proposed by the utility model can bring the following benefits:

[0013] Beneficial effects:

[0014] 1. The threaded sleeve contacts the threads of the second fixing block and the first fixing block through the cooperation of the threads, so that the telescopic rod between the second fixing block and the first fixing block drives the spring to expand, so that the second fixing block and the first fixing block are fixed to the inner wall of the valve while the fastening grooves are expanded, thereby increasing the stability between the valve and the guide tube, so that the guide tube will not be worn due to vibration when the engine is started, and the installation is also convenient without the risk of falling off.

[0015] 2. The threaded sleeve, mounting sleeve and valve guide are all made of gray cast iron, which has high strength and toughness. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0017] In the attached picture:

[0018] Figure 1 The utility model is a schematic diagram of the overall structure of a high-strength valve guide for an automobile engine.

[0019] Figure 2 The utility model is a schematic diagram of the structure of a second fixing block of a high-strength valve guide for an automobile engine.

[0020] Figure 3The utility model is a high-strength valve guide for automobile engines Figure 2 Schematic diagram of the structure at point A in the middle.

[0021] In the figure: 1. catheter body; 2. threaded sleeve; 3. fitting disc; 4. mounting sleeve; 5. notch; 6. first fixing block; 7. second fixing block; 8. mounting block; 9. slider; 10. spring; 11. telescopic rod; 12. thread; 13. slide groove; 14. fastening pattern. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the overall concept of the utility model, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0023] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicating orientations or positional relationships are based on the orientations 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one scheme", "some schemes", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more schemes or examples.

[0027] like Figure 1 to Figure 3 As shown, an embodiment of the utility model proposes a high-strength valve guide for an automobile engine, comprising a guide body 1, the end of the guide body 1 is connected to a threaded sleeve 2, the external thread sleeve of the threaded sleeve 2 is provided with a mounting sleeve 4, the end of the mounting sleeve 4 is provided with a fitting disk 3, because the mounting sleeve 4 is provided with a fitting disk 3 on the outside, it can fit with the end of the engine valve and prevent the mounting sleeve 4 from falling into the valve. The mounting sleeve 4 is provided with a slot 5 inside, and a fastening assembly is provided inside the slot 5. The fastening assembly includes a second fixing block 7 and a first fixing block 6 movably sleeved inside the slot 5, a plurality of telescopic rods 11 are fixedly installed between the second fixing block 7 and the first fixing block 6, and a spring 10 is sleeved outside the plurality of telescopic rods 11.

[0028] like Figure 1 As shown, a threaded hole is provided inside the mounting sleeve 4, and the threaded sleeve 2 is threadedly matched with the mounting sleeve 4, so that the threaded sleeve 2 can drive the catheter body 1 to move.

[0029] like Figure 1 and Figure 2 As shown, the outer surfaces of the second fixing block 7 and the first fixing block 6 close to the threaded sleeve 2 are both provided with threads 12 , and the threads 12 cooperate with the external threads of the threaded sleeve 2 .

[0030] like Figure 1 and Figure 3 As shown, the second fixing block 7 and the first fixing block 6 are externally fixedly connected with mounting blocks 8 on both sides, and the two ends of the mounting block 8 are fixedly connected with sliders 9, and a slide groove 13 is provided on the inner side of the mounting sleeve 4 close to the slider 9, and the slide groove 13 is slidably connected with the slider 9. When the second fixing block 7 and the first fixing block 6 are spread apart, the slide groove 13 cooperates with the slider 9 to play a guiding role.

[0031] like Figure 1As shown, the second fixing block 7 and the first fixing block 6 are both provided with fastening grooves 14 on their exteriors. Through the fastening grooves 14 provided on the exteriors of the second fixing block 7 and the first fixing block 6, the second fixing block 7 and the first fixing block 6 are fixed to the inner wall of the valve while being stretched apart.

[0032] like Figure 1 As shown, the threaded sleeve 2, the mounting sleeve 4 and the catheter body 1 are all made of gray cast iron material, which has high strength and toughness, and increases the service life of the catheter body 1.

[0033] Working principle:

[0034] The staff first connects the installation sleeve 4 with the valve of the engine. Since the installation sleeve 4 is provided with a fitting disk 3 on the outside, it can fit with the valve of the engine and will not cause the installation sleeve 4 to fall into the valve. At this time, the staff holds the threaded sleeve 2, passes the threaded sleeve 2 through the inside of the fitting disk 3, and rotates inside the installation sleeve 4. At this time, the threaded sleeve 2 cooperates with the thread 12 and contacts with the thread 12 opened by the second fixing block 7 and the first fixing block 6, so that the telescopic rod 11 between the second fixing block 7 and the first fixing block 6 drives the spring 10 to expand, so that the second fixing block 7 and the first fixing block 6 are fixed to the inner wall of the valve with the fastening groove 14 while expanding, thereby increasing the stability between the valve and preventing the guide tube body 1 from being worn due to vibration when the engine is started. At the same time, the installation is also more convenient and there is no risk of falling off. At the same time, the threaded sleeve, the installation sleeve and the valve guide are all made of gray cast iron material with high strength toughness.

[0035] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0036] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A high-strength valve guide for an automobile engine, comprising a guide body (1), characterized in that: The end of the catheter body (1) is connected to a threaded sleeve (2), the external thread sleeve of the threaded sleeve (2) is provided with a mounting sleeve (4), the end of the mounting sleeve (4) is provided with a fitting disk (3), the interior of the mounting sleeve (4) is provided with a slot (5), the interior of the slot (5) is provided with a fastening assembly, the fastening assembly comprises a second fixing block (7) and a first fixing block (6) movably mounted inside the slot (5), a plurality of telescopic rods (11) are fixedly mounted between the second fixing block (7) and the first fixing block (6), and the exterior of the plurality of telescopic rods (11) is provided with a spring (10).

2. The high-strength valve guide for an automobile engine according to claim 1, characterized in that: A threaded hole is provided inside the installation sleeve (4), and the threaded sleeve (2) is threadably matched with the installation sleeve (4).

3. The high-strength valve guide for an automobile engine according to claim 1, characterized in that: The outer surfaces of the second fixing block (7) and the first fixing block (6) on one side close to the threaded sleeve (2) are both provided with threads (12), and the threads (12) cooperate with the external threads of the threaded sleeve (2).

4. The high-strength valve guide for an automobile engine according to claim 1, characterized in that: The second fixed block (7) and the first fixed block (6) are externally fixedly connected with mounting blocks (8) on both sides, and the two ends of the mounting block (8) are fixedly connected with sliders (9). A sliding groove (13) is provided on the inner side of the mounting sleeve (4) near the slider (9), and the sliding groove (13) is slidably connected with the slider (9).

5. The high-strength valve guide for an automobile engine according to claim 1, characterized in that: The second fixing block (7) and the first fixing block (6) are both provided with fastening lines (14) on their exteriors.

6. The high-strength valve guide for an automobile engine according to claim 1, characterized in that: The threaded sleeve (2), the mounting sleeve (4) and the catheter body (1) are all made of grey cast iron.

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