Anti-falling nut pipe connecting piece for spark plug shell

By designing an anti-loosening nut fitting, and utilizing a combination structure of a connecting seat, a fixing seat, a mounting seat, and a limit bolt sleeve, the problem of spark plugs loosening and falling off during vibration is solved, achieving a stable connection between the spark plug and the connecting seat and ensuring normal engine operation.

CN224191443UActive Publication Date: 2026-05-01ZHEJIANG CHUANGSHITONG AUTO PARTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG CHUANGSHITONG AUTO PARTS CO LTD
Filing Date
2025-05-13
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Car spark plugs are prone to loosening and falling off during vibration, which can lead to abnormal engine ignition, affect power output, and increase maintenance costs.

Method used

A non-loosening nut fitting is designed, which enhances the connection stability between the spark plug body and the connecting seat by combining a connecting seat, a fixed seat, a mounting seat, a threaded mounting hole and a threaded sleeve, and by utilizing the mutual cooperation of the limiting bolt and the limiting sleeve.

Benefits of technology

It effectively prevents spark plugs from loosening and falling off, improves the reliability and safety of the connection, and ensures the stable operation of the engine ignition system.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an anti-drop nut pipe connecting piece for a spark plug shell. The anti-drop nut pipe connecting piece comprises a connecting seat and a spark plug main body, the top of the connecting base is fixedly connected with a fixing base, a mounting base is integrally formed at the top of the fixing base, a threaded mounting hole is formed in the top of the mounting base and is in threaded connection with the spark plug body, and the outer wall of the top of the spark plug body is in threaded connection with a threaded sleeve. An anti-disengaging assembly is arranged between the threaded sleeve and the fixing base. By arranging the connecting seat, the fixing seat, the mounting seat, the threaded mounting hole and the threaded sleeve, threaded connection between the spark plug main body and the connecting seat is realized, and the spark plug is convenient to mount and dismount. Meanwhile, by arranging the anti-falling assembly, the stability of connection between the spark plug body and the connecting base is enhanced, the spark plug body is effectively prevented from falling off from the connecting base, the reliability and safety of the whole pipe connecting piece are improved, and it is ensured that the spark plug body can work normally in the using process.
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Description

A type of anti-loosening nut fitting for spark plug housings Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to an anti-loosening nut tube connector for spark plug housings. Background Technology

[0002] Automotive spark plugs, commonly known as spark nozzles, function to discharge the pulsed high-voltage electricity delivered by the high-voltage wire (spark wire), breaking down the air between the two electrodes of the spark plug and generating an electric spark to ignite the air-fuel mixture in the cylinder. As a core component of the engine's ignition system, the stable connection of the spark plug is crucial to engine performance and reliability. Car engines vibrate during operation, and ordinary spark plug connections are prone to loosening. Prolonged vibration gradually reduces the friction between the threads, leading to gaps between the spark plug and the connecting parts, or even causing it to fall off. Once a spark plug falls off, it not only causes abnormal engine ignition, affecting engine power output and leading to problems such as insufficient power and increased fuel consumption, but in severe cases, it can also damage internal engine components, significantly increasing repair costs and vehicle downtime.

[0003] Based on the above, this utility model proposes an anti-loosening nut tube fitting for spark plug housings, which can effectively solve the above problems. Summary of the Invention

[0004] The purpose of this utility model is to provide an anti-loosening nut fitting for spark plug housings. This utility model provides an anti-loosening nut fitting for spark plug housings by threading the spark plug body into the threaded mounting hole on the top of the mounting base. Through the interaction of the limiting bolt, the second through hole, the first through hole, and the limiting sleeve, the threaded sleeve and the mounting base are limited, preventing the threaded sleeve from loosening and falling off, thus increasing installation stability.

[0005] This utility model is achieved through the following technical solution:

[0006] An anti-loosening nut fitting for a spark plug housing includes a connecting seat and a spark plug body; a fixing seat is fixedly connected to the top of the connecting seat, and an mounting seat is integrally formed on the top of the fixing seat. A threaded mounting hole is opened on the top of the mounting seat, and the threaded mounting hole is threadedly connected to the spark plug body. A threaded sleeve is threadedly connected to the top outer wall of the spark plug body, and an anti-loosening component is provided between the threaded sleeve and the fixing seat.

[0007] According to the above technical solution, as a further preferred technical solution, the anti-detachment component includes a limiting bolt and a limiting sleeve, wherein the limiting sleeve is fixedly connected to both sides of the fixing base.

[0008] According to the above technical solution, as a further preferred technical solution, the top of the limiting sleeve is provided with a threaded hole that is connected to the limiting bolt.

[0009] According to the above technical solution, as a further preferred technical solution, the mounting base has first through holes on both sides for the limit bolts to pass through.

[0010] According to the above technical solution, as a further preferred technical solution, the threaded sleeve has second through holes on both sides for the limiting bolt to pass through.

[0011] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0012] This utility model provides an anti-loosening nut fitting for spark plug housings. By incorporating a connecting seat, a fixing seat, a mounting seat, a threaded mounting hole, and a threaded sleeve, a threaded connection is achieved between the spark plug body and the connecting seat, facilitating installation and disassembly. Simultaneously, the anti-loosening component enhances the stability of the connection between the spark plug body and the connecting seat, effectively preventing the spark plug body from detaching from the connecting seat, thus improving the reliability and safety of the entire fitting and ensuring the normal operation of the spark plug body during use. Attached Figure Description

[0013] Figure 1 is a schematic diagram of the overall structure of this utility model. Detailed Implementation

[0014] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0015] A nut fitting for spark plug housing includes a connecting seat 1 and a spark plug body 2; a fixing seat 3 is fixedly connected to the top of the connecting seat 1, and an mounting seat 4 is integrally formed on the top of the fixing seat 3. A threaded mounting hole 5 is provided on the top of the mounting seat 4, and the threaded mounting hole 5 is threadedly connected to the spark plug body 2. A threaded sleeve 6 is threadedly connected to the top outer wall of the spark plug body 2, and an anti-dislodgement component is provided between the threaded sleeve 6 and the fixing seat 3.

[0016] This utility model achieves a threaded connection between the spark plug body 2 and the connecting seat 1 by setting a connecting seat 1, a fixing seat 3, a mounting seat 4, a threaded mounting hole 5, and a threaded sleeve 6, which facilitates installation and disassembly. At the same time, by setting an anti-detachment component, the stability of the connection between the spark plug body 2 and the connecting seat 1 is enhanced, effectively preventing the spark plug body 2 from falling off the connecting seat 1, improving the reliability and safety of the entire fitting, and ensuring that the spark plug body 2 can work normally during use.

[0017] Furthermore, in another embodiment, the anti-detachment component includes a limiting bolt 7 and a limiting sleeve 8, the limiting sleeve 8 being fixedly connected to both sides of the fixing base 3.

[0018] By setting up an anti-disengagement component, the rotation of the threaded sleeve 8 can be restricted under the combined action of the limiting bolt 7 and the limiting sleeve 8, thereby preventing the spark plug body 2 from falling off due to loosening, enhancing the anti-disengagement effect, and ensuring the stability of the connection between the spark plug body 2 and the connecting seat 1.

[0019] Furthermore, in another embodiment, the top of the limiting sleeve 8 is provided with a threaded hole 9 that is connected to the limiting bolt 7.

[0020] By setting the threaded hole 9, the limiting bolt 7 can be stably connected to the limiting sleeve 8, preventing the limiting bolt 7 from loosening and falling off, thereby ensuring the limiting effect on the threaded sleeve 6 and improving the stability of the entire anti-loosening assembly.

[0021] Furthermore, in another embodiment, the mounting base 4 has first through holes 10 on both sides for the limiting bolts 7 to pass through.

[0022] The first through hole 11 allows the limiting bolt 7 to pass smoothly through the mounting base 4 and connect with the limiting sleeve 8, thereby limiting the threaded sleeve 6.

[0023] Furthermore, in another embodiment, the threaded sleeve 6 has second through holes 11 on both sides for the limiting bolt 7 to pass through.

[0024] By opening second through holes 11 on both sides of the threaded sleeve 6 for the limiting bolt 7 to pass through, the limiting bolt 7 can pass through the threaded sleeve 6 and cooperate with the limiting sleeve 8, limiting the threaded sleeve 6 from multiple directions, enhancing the limiting effect on the threaded sleeve 8, effectively preventing the threaded sleeve 8 from rotating or displacing during operation, thereby better preventing the spark plug body 2 from falling off, improving the reliability and stability of the connection between the spark plug body 2 and the connecting seat 1, and ensuring the normal use of the spark plug body 2.

[0025] The working principle of this utility model is as follows:

[0026] During installation, first connect the lower thread of the spark plug body 2 to the threaded mounting hole 5 on the top of the mounting base 4. After installing the spark plug body 2, connect the threaded sleeve 6 to the top outer wall of the spark plug body 2 via threads. Since the limiting bolt 7 and the limiting sleeve 8 are tightly connected by threads, and the limiting bolt 7 passes through the threaded sleeve 6 and the mounting base 4 in sequence and is threaded to the limiting sleeve 8, the threaded sleeve 6 is restricted from multiple directions. When the spark plug body 2 is subjected to external forces such as vibration, it can effectively prevent the spark plug body 2 from falling off the connecting base 1 due to loose threads, thereby ensuring the stability of the connection between the spark plug and the connecting base, ensuring that the spark plug can work normally, and maintaining the stable operation of the engine ignition system.

[0027] Based on the description and drawings of this utility model, those skilled in the art can easily manufacture or use the anti-loosening nut tube fitting for spark plug housings of this utility model, and can produce the positive effects described in this utility model.

[0028] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0029] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A non-loosening nut fitting for spark plug housings, characterized in that: It includes a connecting seat (1) and a spark plug body (2); a fixing seat (3) is fixedly connected to the top of the connecting seat (1), and an mounting seat (4) is integrally formed on the top of the fixing seat (3). A threaded mounting hole (5) is opened on the top of the mounting seat (4), and the threaded mounting hole (5) is threadedly connected to the spark plug body (2). A threaded sleeve (6) is threadedly connected to the top outer wall of the spark plug body (2), and an anti-disengagement component is provided between the threaded sleeve (6) and the fixing seat (3).

2. The anti-loosening nut fitting for spark plug housing according to claim 1, characterized in that: The anti-detachment component includes a limiting bolt (7) and a limiting sleeve (8), the limiting sleeve (8) being fixedly connected to both sides of the fixing seat (3).

3. A spark plug housing anti-loosening nut fitting according to claim 2, characterized in that: The top of the limiting sleeve (8) is provided with a threaded hole (9) that is connected to the limiting bolt (7).

4. A spark plug housing anti-loosening nut fitting according to claim 2, characterized in that: The mounting base (4) has first through holes (10) on both sides for the limit bolts (7) to pass through.

5. A non-loosening nut fitting for spark plug housings according to claim 2, characterized in that: The threaded sleeve (6) has second through holes (11) on both sides for the limit bolt (7) to pass through.