Resistance material spark plug

Abstract

The utility model discloses a resistance material spark plug which comprises a fastening screw, a ceramic insulator arranged at the top end of the fastening screw, a terminal nut arranged at the top end of the ceramic insulator, a protective cover, a magnetic ring and an installation assembly, the protective cover is used for protecting the protective cover from being damaged during installation, and the magnetic ring is used for being mutually attracted with a magnetic sleeve. And the mounting assembly is used for fixedly connecting the fastening screw and the protective cover. By utilizing the design of the fastening screw, the protective cover, the magnetic ring and the mounting assembly, the protective cover and the fastening screw are inserted into the magnetic sleeve, and when the protective cover is inserted into the magnetic sleeve, the inner wall of the magnetic sleeve touches the insertion block and extrudes the insertion block, so that the insertion block moves into the locking hole; at the moment, the magnetic ring and the magnetic block in the magnetic attraction sleeve are attracted mutually, after the spark plug is installed, the protective cover can be pulled away along with the sleeve, and when the spark plug is installed, the protective cover can play a role in protecting the ceramic insulator.

Description

Technical Field

[0001] The utility model relates to the technical field of spark plugs, in particular to a spark plug made of resistance material. Background Art

[0002] Spark plugs are ignition devices for starting car engines. In order to prevent the internal current from generating an electromagnetic field that affects car equipment when the spark plug is energized, resistors are set inside the spark plugs to suppress the interference of the car ignition system with radio.

[0003] The top of the spark plug is usually made of insulating ceramic. During installation, the fastening screw of the spark plug is clamped into the multi-angle magnetic socket wrench, and the fastening thread at the bottom of the spark plug is threadedly connected to the threaded hole of the engine to fix the spark plug. However, when the spark plug is placed in the socket and installed, the socket and the spark plug will be skewed, causing the socket to squeeze the insulating ceramic body of the spark plug, thereby causing the ceramic insulator to break, and further causing the top of the spark plug to break and separate as a whole, affecting the use of the spark plug. Utility Model Content

[0004] The purpose of the present utility model is to provide a spark plug made of a resistor material to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a resistor material spark plug, comprising a fastening screw, a ceramic insulator for insulation protection provided at the top of the fastening screw, a terminal nut for connecting to an ignition coil provided at the top of the ceramic insulator, and further comprising:

[0006] A protective cover is provided on the outside of the ceramic insulator and is used to protect the protective cover from damage during installation;

[0007] A magnetic ring is provided on the top of the protective cover and is used for adsorption with the magnetic sleeve;

[0008] The mounting assembly is arranged on the top end of the fastening screw and is used for fixedly connecting the fastening screw and the protective cover.

[0009] Preferably, a threaded section is provided at the bottom end of the fastening screw, a central electrode is provided at the bottom of the threaded section, and an outer electrode for cooperating with the central electrode is provided on one side of the bottom end of the threaded section.

[0010] Preferably, the fastening screw is a regular hexagon, and the protective cover is a circular ring.

[0011] Preferably, the outer wall diameter of the protective cover is the same as the width of the opposite sides of the fastening screw.

[0012] Preferably, a ring groove is provided at the top of the protective cover, and the bottom end of the magnetic ring is fixedly connected to the bottom end of the inner wall of the ring groove.

[0013] Preferably, the mounting assembly includes a fixing block and an inserting block, the bottom end of the protective cover is provided with a slot for inserting the fixing block, and the inner wall of the slot is provided with a locking hole for inserting the inserting block.

[0014] Preferably, a cavity is provided inside the fixing block, a socket is provided on the inner wall of the cavity, the plug block is connected to the socket through insertion, one end of the plug block is fixedly connected to a baffle, and an elastic block is provided on one side of the baffle.

[0015] Preferably, the bottom end of the fixing block is fixedly connected to the top end of the fastening screw, and the fixing block is arranged on the side of the fastening screw.

[0016] The technical effects and advantages of this utility model are:

[0017] The utility model utilizes the design of a fastening screw, a protective cover, a magnetic ring and a mounting assembly. When installing the spark plug, the protective cover and the fastening screw are inserted into the magnetic sleeve, and then the threaded section is rotated to threadably mount the spark plug to the engine. When the protective cover is inserted into the magnetic sleeve, the inner wall of the magnetic sleeve touches the plug block, squeezing the plug block to move the plug block into the locking hole. At this time, the magnetic ring and the magnetic block in the magnetic sleeve are magnetically attracted to each other. When the spark plug is installed, the protective cover is withdrawn together with the sleeve, so that the protective cover can protect the ceramic insulator when installing the spark plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the spark plug and mounting assembly of the utility model.

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the protective cover of the utility model when viewed from above.

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the installation component of the utility model.

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the connection between the installation component and the protective cover of the utility model.

[0023] In the figure: 1. Fastening screw; 2. Center electrode; 3. Outer electrode; 4. Threaded segment; 5. Ceramic insulator; 6. Terminal nut; 7. Protective cover; 8. Magnetic ring; 9. Mounting assembly; 91. Fixing block; 92. Insert block; 93. Baffle; 94. Elastic block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] The utility model provides Figures 1-5 The resistor material spark plug shown includes a fastening screw 1, a ceramic insulator 5 for insulation protection is provided at the top of the fastening screw 1, and a terminal nut 6 for connecting to an ignition coil is provided at the top of the ceramic insulator 5, and further includes:

[0026] The protective cover 7 is arranged outside the ceramic insulator 5 and is used to protect the protective cover 7 from being damaged during installation;

[0027] The magnetic ring 8 is arranged on the top of the protective cover 7, and is used to be attracted to the magnetic sleeve;

[0028] The mounting assembly 9 is arranged on the top of the fastening screw 1 and is used for fixing the fastening screw 1 and the protective cover 7 .

[0029] Specifically, a threaded section 4 is provided at the bottom end of the fastening screw 1 , a central electrode 2 is provided at the bottom of the threaded section 4 , and an outer electrode 3 for cooperating with the central electrode 2 is provided on one side of the bottom end of the threaded section 4 .

[0030] Furthermore, the fastening screw 1, the center electrode 2, the outer electrode 3, the threaded segment 4, the ceramic insulator 5 and the terminal nut 6 constitute an existing resistance-type spark plug. By clamping the fastening screw 1 with the magnetic sleeve, the fastening screw 1 is rotated to drive the rotation of the threaded segment 4, so that the threaded segment 4 is threadedly connected to the engine, and then the terminal nut 6 is connected to the ignition coil. The current is conducted to the center electrode 2 through the terminal nut 6, so that the current breaks through the air and contacts the outer electrode 3, generating sparks between the center electrode 2 and the outer electrode 3, causing the gasoline to ignite and explode, and starting the engine.

[0031] Specifically, the fastening screw 1 is a regular hexagon, the protective cover 7 is a circular ring, the outer wall diameter of the protective cover 7 is the same as the width of the opposite side of the fastening screw 1, a ring groove is provided at the top of the protective cover 7, and the bottom end of the magnetic ring 8 is fixedly connected to the bottom end of the inner wall of the ring groove.

[0032] Furthermore, the fastening screw 1 is an existing regular hexagonal nut, the protective cover 7 is a circular sleeve, the outer circle of the protective cover 7 is inscribed in the regular hexagon of the fastening screw 1, and the mounting assembly 9 is arranged at a position where the top of the fastening screw 1 is inscribed in the protective cover 7. The magnetic poles of the magnetic ring 8 and the magnetic block in the magnetic sleeve are opposite, and the inner wall of the magnetic ring 8 and the protective cover 7 are fixed by bonding.

[0033] Specifically, the mounting assembly 9 includes a fixing block 91 and an insertion block 92. A slot for inserting the fixing block 91 is provided at the bottom end of the protective cover 7. A locking hole for inserting the insertion block 92 is provided on the inner wall of the slot. A cavity is provided inside the fixing block 91. A jack is provided on the inner wall of the cavity. The insertion block 92 is connected to the jack through the jack. One end of the insertion block 92 is fixedly connected to a baffle 93. An elastic block 94 is provided on one side of the baffle 93. The bottom end of the fixing block 91 is fixedly connected to the top of the fastening screw 1, and the fixing block 91 is provided on the side of the fastening screw 1.

[0034] Furthermore, two mounting components 9 are provided, which are symmetrically arranged on both sides of the top of the fastening screw 1. The size of the slot is adapted to the size of the fixing block 91. The vertical cross-section of the locking hole is a truncated cone. The area of ​​the locking hole close to the slot is larger than the area of ​​the side away from the slot. The end of the plug block 92 away from the fixing block 91 is hemispherical, and the end of the plug block 92 close to the baffle 93 is cylindrical. The contact part between the plug block 92 and the baffle 93 is welded and fixed. The elastic block 94 is an elastic rubber block. The baffle 93 and the elastic block 94 are both arranged in the cavity. The size of the baffle 93 is 1.2 times the size of the hole. The elastic block 94 is always in a compressed state in the cavity. The bottom end of the fixing block 91 is welded and fixed to the top of the fastening screw 1. In this way, during the installation of the spark plug, the protective cover 7 is always sleeved on the outer wall of the ceramic insulator 5, and under the restriction of the fixing block 91, the protective cover 7 cannot move horizontally, thereby protecting the ceramic insulator 5.

[0035] When installing the spark plug, the magnetic sleeve is placed on the outer wall of the protective cover 7 and the fastening screw 1. At this time, the inner wall of the magnetic sleeve will squeeze the spherical end of the plug 92, causing the plug 92 to move toward the slot but not leave the locking hole. At this time, the magnetic ring 8 on the top of the protective cover 7 will be magnetically attracted to the magnetic block in the magnetic sleeve, and then the fastening screw 1 is rotated to fix the spark plug. When the installation is completed, the magnetic sleeve is pulled away from the fastening screw 1, and the magnetic sleeve magnetically attracts the protective cover 7 to move away from the fastening screw 1 at the same time. The spherical end of the plug 92 moves along the inclined surface of the locking hole until the plug 92 is completely moved into the slot. As the protective cover 7 gradually moves vertically, the protective cover 7 is separated from the fixing block 91.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A spark plug made of a resistor material, comprising a fastening screw (1), a ceramic insulator (5) for insulation protection being provided at the top of the fastening screw (1), a terminal nut (6) for connecting an ignition coil being provided at the top of the ceramic insulator (5), and characterized in that: Also includes: A protective cover (7), the protective cover (7) being arranged outside the ceramic insulator (5), and the protective cover (7) being used to protect the protective cover (7) from being damaged during installation; A magnetic ring (8), the magnetic ring (8) being arranged on the top of the protective cover (7), and the magnetic ring (8) being used for mutual adsorption with the magnetic sleeve; A mounting assembly (9) is provided on the top end of the fastening screw (1), and the mounting assembly (9) is used for fixedly connecting the fastening screw (1) and the protective cover (7).

2. A resistor material spark plug according to claim 1, characterized in that: The bottom end of the fastening screw (1) is provided with a threaded section (4), the bottom of the threaded section (4) is provided with a central electrode (2), and one side of the bottom end of the threaded section (4) is provided with an outer electrode (3) for cooperating with the central electrode (2).

3. A resistor material spark plug according to claim 1, characterized in that: The fastening screw (1) is a regular hexagon, and the protective cover (7) is a circular ring.

4. A resistor material spark plug according to claim 3, characterized in that: The outer wall diameter of the protective cover (7) is the same as the width of the opposite side of the fastening screw (1).

5. The resistor material spark plug according to claim 1, characterized in that: The top of the protective cover (7) is provided with an annular groove, and the bottom end of the magnetic ring (8) is fixedly connected to the bottom end of the inner wall of the annular groove.

6. The resistor material spark plug according to claim 1, characterized in that: The mounting assembly (9) comprises a fixing block (91) and an inserting block (92); a slot for inserting the fixing block (91) is provided at the bottom end of the protective cover (7); and a locking hole for inserting the inserting block (92) is provided on the inner wall of the slot.

7. A resistor material spark plug according to claim 6, characterized in that: A cavity is provided inside the fixed block (91), an insertion hole is provided on the inner wall of the cavity, the insertion block (92) is connected to the insertion hole, one end of the insertion block (92) is fixedly connected to a baffle (93), and an elastic block (94) is provided on one side of the baffle (93).

8. The resistor material spark plug according to claim 6, characterized in that: The bottom end of the fixing block (91) is fixedly connected to the top end of the fastening screw (1), and the fixing block (91) is arranged on the side of the fastening screw (1).

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