Silicon nitride glow plug

Abstract

A silicon nitride glow plug belongs to the technical field of glow plugs. Comprising a heater assembly, a threaded sleeve, a connecting wire, an insulating sleeve, a bolt block, a mounting piece and a connecting piece, the upper end of the heater assembly is sleeved with a threaded sleeve and a bolt block. A connecting column is arranged in the bolt block, and a heating wire is arranged on the connecting column in a sleeving manner; the connecting wire is connected to the heating wire, the lower end of the connecting wire is sleeved with an insulating sleeve, and the upper end of the connecting wire is connected with a connecting piece; and the mounting piece penetrates through the connecting line. According to the utility model, the heater assembly, the connecting wire, the insulating sleeve, the mounting piece and the connecting piece are arranged; due to the arrangement of the external wiring terminal, the connection firmness and the contact performance are improved, so that the electric energy can be transmitted smoothly, and the heating effect is better; the insulating sleeve is arranged to protect the internal external wiring terminal, so that the fault rate and the damage rate of the glow plug are reduced; the installation piece and the connecting piece are arranged, so that the glow plug is convenient to connect and use, and the glow plug is long in service life, fast in temperature rise and convenient to install.

Description

Technical Field

[0001] The utility model belongs to the technical field of glow plugs, and in particular relates to a silicon nitride glow plug. Background Art

[0002] Silicon nitride glow plugs can quickly gasify, ignite and burn fuel. Therefore, the temperature inside the vehicle can also rise quickly shortly after the engine is started and when the engine is idle. Existing glow plugs are inconvenient to install and connect, and the connection wires are not stable, which increases the failure rate and damage rate of the glow plugs.

[0003] Therefore, a silicon nitride glow plug is urgently needed to solve the above technical problems. Utility Model Content

[0004] The utility model aims to provide a silicon nitride glow plug to solve the above technical problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a silicon nitride glow plug, comprising a heater assembly, a screw sleeve, a connecting wire, an insulating sleeve, a bolt block, a mounting piece and a connecting piece; the upper end of the heater assembly is sleeved with a screw sleeve and a bolt block; a connecting column is arranged in the bolt block, and a heating wire is sleeved on the connecting column; the connecting wire is connected to the heating wire, the lower end of the connecting wire is sleeved with an insulating sleeve, and the upper end of the connecting wire is connected to the connecting piece; the mounting piece is arranged through the connecting wire.

[0006] The upper end of the heater component is arranged in the threaded sleeve, and the heater component and the connecting column are connected via a metal piece.

[0007] The connecting column is arranged through the bolt block, and two heating wires are arranged on the connecting column. The heating wires are connected with connecting wires through external connecting terminals, and an insulating sleeve is arranged on the outer jacket of the external connecting terminal.

[0008] The mounting member includes a lower inlet, a mounting ring, mounting threads and an outlet end; the mounting ring is arranged at the lower end of the mounting member, the upper end of the mounting ring is provided with mounting threads, the lower inlet is located in the mounting ring, and the connecting line passes through the lower inlet and the outlet end through the mounting member.

[0009] The connecting piece includes a clamping piece and a plurality of mounting grooves, wherein the clamping piece is arranged at the upper end of the connecting piece; a metal sleeve is arranged at the top end of the connecting line, and a metal ring is connected to the metal sleeve; metal sheets are arranged on the upper and lower inner walls of the mounting groove, and the metal ring is arranged inside the metal sheet.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model is provided with a heater assembly, a connecting wire, an insulating sleeve, a mounting piece and a connecting piece. When in use, electricity is connected via the connecting piece, and the metal sleeve and the metal ring pass the current to the heater assembly via the connecting wire, so that the heater assembly works; the provision of the external terminal increases the firmness and contact performance of the connection to ensure that the electric energy can be smoothly transmitted and the heating effect is better; the provision of the insulating sleeve can protect the internal external terminal and reduce the failure rate and damage rate of the glow plug; the provision of the mounting piece and the connecting piece facilitates the connection and use of the glow plug. The glow plug of the utility model has a long service life, fast heating and is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of a silicon nitride glow plug;

[0013] Figure 2 is a schematic diagram of the connecting parts;

[0014] In the figure: 1. heater assembly; 2. screw sleeve; 3. connecting wire; 4. insulating sleeve; 5. bolt block; 6. mounting piece; 7. connecting piece; 8. heating wire; 9. connecting column; 10. external terminal; 11. lower inlet; 12. mounting ring; 13. mounting thread; 14. outlet end; 15. snap-fit ​​piece; 16. mounting groove; 17. metal sheet; 18. metal sleeve; 19. metal ring. DETAILED DESCRIPTION

[0015] 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.

[0016] See also Figure 1-2 The utility model provides a technical solution: a silicon nitride glow plug, comprising a heater assembly 1, a screw sleeve 2, a connecting wire 3, an insulating sleeve 4, a bolt block 5, a mounting member 6 and a connecting member 7; the upper end of the heater assembly 1 is sleeved with a screw sleeve 2 and a bolt block 5; a connecting column 9 is arranged in the bolt block 5, and a heating wire 8 is sleeved on the connecting column 9; the connecting wire 3 is connected to the heating wire 8, the lower end of the connecting wire 3 is sleeved with an insulating sleeve 4, and the upper end of the connecting wire 3 is connected to the connecting member 7; the mounting member 6 is arranged through the connecting wire 3.

[0017] The upper end of the heater assembly 1 is arranged in the screw sleeve 2, and the heater assembly 1 and the connecting column 9 are connected via a metal piece.

[0018] Furthermore, a heating wire is provided in the heater assembly 1, and when in use, heat is generated by electric current, thereby heating an object.

[0019] Furthermore, the outer ring of the screw sleeve 2 is provided with a thread. When in use, when the screw sleeve 2 is rotated, the heater assembly 1 at the lower end can be rotated and fixed at the same time.

[0020] The connecting column 9 is arranged through the bolt block 5. Two heating wires 8 are arranged on the connecting column 9. The heating wires 8 are connected to the connecting wires 3 via the external connecting terminals 10. The external connecting terminals 10 are covered with an insulating sleeve 4.

[0021] The connecting wire 3 is made of high temperature resistant material to ensure that it is not easily melted or damaged during the heating process. The setting of the external connection terminal 10 increases the firmness and contact performance of the connection to ensure that the electric energy can be transmitted smoothly and the heating effect is better.

[0022] The provision of the insulating sleeve 4 can protect the internal external connection terminal 10 and reduce the failure rate and damage rate of the glow plug.

[0023] The mounting member 6 includes a lower inlet 11, a mounting ring 12, a mounting thread 13 and an outlet port 14; the mounting ring 12 is arranged at the lower end of the mounting member 6, and the upper end of the mounting ring 12 is provided with a mounting thread 13, the lower inlet 11 is located in the mounting ring 12, and the connecting line 3 passes through the lower inlet 11 and the outlet port 14 and passes through the mounting member 6.

[0024] Furthermore, two outlets are provided at the outlet end 14 , and the connecting line 3 extends out of the mounting member 6 through the outlets.

[0025] When in use, the glow plug is installed through the mounting member 6, and the mounting thread 13 is rotated to install the mounting ring 12 into the device to fix the glow plug.

[0026] The connecting member 7 includes a snap-fitting member 15 and a plurality of mounting grooves 16 , wherein the snap-fitting member 15 is arranged at the upper end of the connecting member 7 ; a metal sleeve 18 is arranged at the top end of the connecting wire 3 , and a metal ring 19 is connected to the metal sleeve 18 ; metal sheets 17 are arranged on the upper and lower inner walls of the mounting groove 16 , and the metal ring 19 is arranged inside the metal sheet 17 .

[0027] When in use, electricity is connected via the connecting piece 7, and the metal sleeve 18 and the metal ring 19 pass the current to the heater assembly 1 via the connecting wire 3, so that the heater assembly 1 works.

[0028] 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. A silicon nitride glow plug, characterized in that: The invention comprises a heater assembly (1), a screw sleeve (2), a connecting wire (3), an insulating sleeve (4), a bolt block (5), a mounting piece (6) and a connecting piece (7); the upper end of the heater assembly (1) is sleeved with a screw sleeve (2) and a bolt block (5); a connecting column (9) is arranged inside the bolt block (5), and a heating wire (8) is sleeved on the connecting column (9); the connecting wire (3) is connected to the heating wire (8), the lower end of the connecting wire (3) is sleeved with an insulating sleeve (4), and the upper end of the connecting wire (3) is connected to the connecting piece (7); the mounting piece (6) is arranged through the connecting wire (3).

2. The silicon nitride glow plug according to claim 1, characterized in that: The upper end of the heater component (1) is arranged in the threaded sleeve (2), and the heater component (1) and the connecting column (9) are connected via a metal piece.

3. The silicon nitride glow plug according to claim 1, characterized in that: The connecting column (9) is arranged through the bolt block (5), and two heating wires (8) are arranged on the connecting column (9). The heating wires (8) are connected to the connecting wires (3) via the external connection terminals (10), and the external connection terminals (10) are provided with an insulating sleeve (4) on their outer sleeves.

4. The silicon nitride glow plug according to claim 1, characterized in that: The mounting member (6) comprises a lower inlet (11), a mounting ring (12), a mounting thread (13) and an outlet end (14); the mounting ring (12) is arranged at the lower end of the mounting member (6), the upper end of the mounting ring (12) is provided with a mounting thread (13), the lower inlet (11) is located inside the mounting ring (12), and the connecting line (3) is arranged through the lower inlet (11) and the outlet end (14) and through the mounting member (6).

5. The silicon nitride glow plug according to claim 1, characterized in that: The connecting member (7) comprises a snap-fitting member (15) and a plurality of mounting grooves (16), wherein the snap-fitting member (15) is arranged at the upper end of the connecting member (7); a metal sleeve (18) is arranged at the top end of the connecting wire (3), and a metal ring (19) is connected to the metal sleeve (18); metal sheets (17) are arranged on the upper and lower inner walls of the mounting groove (16), and the metal ring (19) is arranged inside the metal sheet (17).

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