Connecting structure of piezoelectric igniter

Abstract

The utility model relates to the technical field of piezoelectric igniters, in particular to a connecting structure of a piezoelectric igniter, a shell is provided with a connecting pipe communicated with the outside above a leading-out piece, a sealing ring and a clamping piece which are used for fixing a high-voltage lead are fixedly arranged in the connecting pipe, the sealing ring is arranged at the top of the clamping piece, and the clamping piece is fixedly connected with the connecting pipe. The clamping piece comprises a plurality of inclined plates, the inclined plates are annularly distributed, so that a channel is formed in the middle of the clamping piece, the inclined plates are arranged in a downward inclined mode, and the sealing ring and the clamping piece are arranged in the connecting pipe and used for fixing the high-voltage lead and preventing electric leakage after the high-voltage lead is inserted; the high-voltage lead can be installed without a tool by only inserting the high-voltage lead, so that the step of connecting the high-voltage lead can be performed to the final operation, the problem of interference of the high-voltage lead during automatic assembly is solved, the assembly efficiency and the product quality are improved, and meanwhile, the problem that a worker misses gluing or gluing is not uniform can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of piezoelectric igniters, in particular to a connection structure of a piezoelectric igniter. Background Art

[0002] A piezoelectric igniter is a manual ignition device that uses piezoelectric effect as a theoretical basis and piezoelectric ceramics as a medium. It is mostly used in various gas appliances such as gas stoves and gas water heaters. The existing piezoelectric igniter mainly includes a shell and a high-voltage lead. The shell is provided with a striking head, a first piezoelectric ceramic, a second piezoelectric ceramic, a lead-out sheet and a pressure spring. The lead-out sheet is arranged between the first piezoelectric ceramic and the second piezoelectric ceramic. The two piezoelectric ceramics collide violently to generate an instantaneous high-voltage current. One end of the high-voltage lead is connected to the lead-out sheet, and the other end extends out of the shell to guide the high-voltage electricity to the conductive needle.

[0003] To ensure that the high voltage does not leak electricity, the high voltage lead and the shell need to be sealed and connected. The existing high voltage lead needs to be fixed and sealed with glue after being inserted into the shell. At the same time, the piezoelectric igniter needs to be placed in a metal slot frame connected to the main body during assembly, and the high voltage lead is passed through the other side of the metal slot frame and connected to the discharge needle. The metal slot frame is fixed by a cover plate. However, due to the obstruction of the high voltage lead, this assembly step is difficult to achieve automated assembly. It is necessary to manually hold one end of the high voltage lead, pass it through the metal slot frame and pull it out from one side of the slot frame, and then place the piezoelectric igniter. This assembly method is inefficient and the product quality is unstable. In addition, manual gluing may also cause gluing leakage. Utility Model Content

[0004] The utility model provides a connection structure of a piezoelectric igniter, so as to achieve the purpose of facilitating automated production and improving assembly efficiency and quality.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a connection structure of a piezoelectric igniter, comprising a shell, a lead-out plate and a high-voltage lead, the lead-out plate is arranged in the shell, and the shell is provided with a connecting tube connected to the outside above the lead-out plate, a sealing ring and a clamp for fixing the high-voltage lead are fixedly arranged in the connecting tube, the sealing ring is arranged on the top of the clamp, the clamp comprises a plurality of inclined plates, the plurality of inclined plates are distributed in a ring, thereby forming a channel in the middle, and the inclined plates are arranged to be inclined downward, the high-voltage lead is passed through the sealing ring and the clamp, and is plugged into the lead-out plate.

[0006] Furthermore, the clamping member includes an annular body, and the plurality of inclined plates are annularly arranged inside the annular body and gradually tilt downward from outside to inside.

[0007] Furthermore, the outer diameter of the sealing ring is greater than or equal to the inner diameter of the connecting pipe, a through hole corresponding to the channel is provided in the middle of the sealing ring, and the diameter of the high-voltage lead is greater than or equal to the diameter of the through hole.

[0008] Furthermore, a mounting portion for mounting a clamp is provided at the bottom of the connecting pipe, and the clamp is fixedly mounted between the sealing ring and the mounting portion.

[0009] Furthermore, the sealing ring includes a cap and a connecting section, and the cap is arranged on the top of the connecting pipe.

[0010] Compared with the prior art, the beneficial effects of the utility model are: through the sealing ring and the clamping piece arranged in the connecting tube, the high-voltage lead is fixed and leakage is prevented after the high-voltage lead is inserted. The installation of the high-voltage lead can be completed without the use of tools just by inserting the high-voltage lead, so that the step of connecting the high-voltage lead can be put at the last operation, solving the obstruction problem of the high-voltage lead when realizing automated assembly, thereby improving assembly efficiency and product quality, and at the same time preventing the problem of workers missing glue or applying glue unevenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] Figure 2 This is an enlarged view of point A.

[0013] Figure 3 It is a cross-sectional view of the shell in the utility model.

[0014] Figure 4 It is a three-dimensional diagram of the shell in the utility model.

[0015] Figure 5 It is a three-dimensional diagram of the sealing ring in the utility model.

[0016] Figure 6 It is a three-dimensional diagram of the clamp in the utility model.

[0017] Figure 7 It is a three-dimensional diagram of another clamp in the utility model.

[0018] Figure 8 It is a front view of the clamp in the utility model.

[0019] In the figure: housing 1, lead sheet 2, high voltage lead 3, sealing ring 4, clamp 5, connecting pipe 11, through hole 40, cover cap 41, connecting section 42, channel 50, inclined plate 51, annular body 55, mounting portion 101. DETAILED DESCRIPTION

[0020] 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.

[0021] As shown in the accompanying drawings, the utility model is a connection structure of a piezoelectric igniter, comprising a housing 1, a lead sheet 2 and a high-voltage lead 3, wherein the lead sheet 2 is arranged in the housing 1, and the housing 1 is provided with a connecting pipe 11 connected to the outside above the lead sheet 2, and the connecting pipe 11 is connected to the housing 1, thereby forming Figure 3-4 The T-shaped housing 1 is shown, and parts such as a hammer mechanism are also arranged in the housing 1. The existing igniter structure can be referred to. The connecting pipe 11 is fixedly provided with a sealing ring 4 and a clamp 5 for fixing the high-voltage lead 3. The sealing ring 4 is arranged on the top of the clamp 5. The sealing ring 4 is preferably made of a plastic material with a certain elasticity, such as Figure 6-8 As shown, the clamp 5 includes a plurality of inclined plates 51. Specifically, the inclined plates 51 are provided in three or more configurations. Figure 8 At least three inclined plates 51 are arranged in an annular distribution, and multiple inclined plates 51 are arranged in an annular distribution. When the inclined plates 51 are in even number, the multiple inclined plates 51 are arranged in an annular or symmetrical manner, so that a channel 50 is formed in the middle, and the inclined plates 51 are arranged to be inclined downward. The high-voltage lead 3 is passed through the sealing ring 4 and the clamp 5, and is plugged into the lead-out piece 2; the high-voltage lead 3 enters from the connecting pipe 11, passes through the sealing ring 4 and the channel 50 of the clamp 5 in turn, and the high-voltage lead 3 is downward along the inclination of the inclined plate 51 It is inserted in an oblique direction and finally plugged into the lead-out piece 2. The top of the lead-out piece 2 is a connector. It is preferably extended upward into the connecting tube 11, which is more conducive to the plugging and conductivity with the high-voltage lead 3. At this time, the outer wall of the high-voltage lead 3 abuts against the sealing ring 4 and the inclined plate 51, and it is difficult to pull it out from the outside due to the action of the inclined plate 51, thereby achieving the effect of fixing the high-voltage lead 3. At the same time, the sealing ring 4 abuts against the inner wall of the connecting tube 11 under the abutment of the high-voltage lead 3, thereby playing a sealing role to prevent leakage.

[0022] The utility model discloses a connection structure of a piezoelectric igniter. The sealing ring 4 and the clamp 5 are arranged in the connecting tube 11. After the high-voltage lead 3 is inserted, the sealing ring 4 is mainly used to fill the space between the high-voltage lead 3 and the connecting tube 11 to achieve a sealing effect to prevent leakage. At the same time, the sealing ring 4 can also fix the clamp 5. The clamp 5 is used to fix the high-voltage lead 3. The inclined plate 51 is used to press against the outside of the high-voltage lead 3 to fix the high-voltage lead 3, which effectively replaces the glue fixing method. There is no need to use tools such as glue to seal and fix the connection. Only the high-voltage lead 3 needs to be inserted to complete the installation of the high-voltage lead 3 without using tools. The connecting tube 11 and the lead-out piece 2 correspond to each other up and down. The high-voltage lead 3 enters from the connecting tube 11, passes through the sealing ring 4 and the clamp 5, and then continues to move downward until it is plugged into the lead-out piece 2. The connector of the lead-out piece 2 can be set to a pointed head or a cone shape. The larger shape is more conducive to the plugging of the lead-out sheet 2 and the high-voltage lead 3, so that the step of connecting the high-voltage lead 3 can be put at the last operation. During assembly, the igniter without the high-voltage lead 3 can be directly placed in the metal slot frame, and the connecting tube 11 can be extended from the opening on the other side. Since the high-voltage lead 3 is not connected and installed before the piezoelectric igniter is assembled, it can be inserted into the conductive needle end first during assembly, and then the high-voltage lead 3 can be manually inserted into the connecting tube 11 after leaving the factory. Due to the fixing structure of the above-mentioned sealing ring 4 and the clamp 5, the high-voltage lead 3 can be fixed after the high-voltage lead 3 is inserted to prevent it from falling and leaking. This purpose can prevent the loss of the high-voltage lead 3. At the same time, the end of the high-voltage lead 3 connected to the conductive needle can be connected in a fixed connection manner, which solves the obstruction problem of the high-voltage lead 3 when realizing automated assembly, thereby improving assembly efficiency and product quality, and at the same time preventing workers from missing glue or applying glue unevenly.

[0023] In this embodiment, the clamp 5 includes an annular body 55, and multiple inclined plates 51 are arranged in an annular shape on the inner side of the annular body 55, and gradually tilted downward from the outside to the inside. The structure of the retaining spring can be referred to. The annular body 55 is flat, and the sum of the height of the sealing ring 4 and the thickness of the annular body 55 corresponds to the length of the connecting pipe 11. The top of the inclined plate 51 is connected to the inner side of the annular body 55, and the bottom is tilted downward. The inclined plate 51 has a structure that is larger at the top and smaller at the bottom. The retaining spring can also be directly used, or the annular body 55 can be omitted, and multiple annularly distributed inclined plates 51 can be directly set on the inner wall of the connecting pipe 11. The top of the inclined plate 51 is connected to the inner wall of the connecting pipe 11, and the bottom is tilted downward.

[0024] In this embodiment, the outer diameter of the sealing ring 4 is greater than or equal to the inner diameter of the connecting tube 11, a through hole 40 corresponding to the channel 50 is provided in the middle of the sealing ring 4, the diameter of the high-voltage lead 3 is greater than or equal to the diameter of the through hole 40, the center of the channel 50 and the through hole 40 correspond to each other, and the diameters are the same.

[0025] In this embodiment, the bottom of the connecting pipe 11 is provided with a mounting portion 101 for mounting the clamp 5. The clamp 5 is fixedly mounted between the sealing ring 4 and the mounting portion 101. Figure 2-3 As shown, the base can be considered as being mainly used to support the clamp 5 to prevent the clamp 5 from moving downward, and the top of the clamp 5 is pressed by the sealing ring 4, thereby fixing the clamp 5; one or two protrusions can also be provided on the inner wall of the connecting tube 11. When it is provided as one protrusion, the function is the same as that of the mounting portion 101, and the clamp 5 is provided on the protrusion and then pressed by the sealing ring 4. When there are two protrusions, the clamp 5 is provided between the two protrusions, and the sealing ring 4 also rests on the top of the clamp 5.

[0026] In this embodiment, the sealing ring 4 includes a cap 41 and a connecting section 42. The cap 41 is arranged at the top of the connecting tube 11. The sealing ring 4 is integrally formed. The sum of the length of the connecting section 42 and the thickness of the annular body 55 is equal to the straight-line distance from the top of the connecting tube 11 to the mounting portion 101. When the sealing ring 4 and the clamp 5 are both arranged in the connecting tube 11, the cap 41 is abutting against the top of the connecting tube 11. When installing the high-voltage lead 3, the sealing ring 4 can also be first put on one end of the high-voltage lead 3, and then the end together with the sealing ring 4 is inserted into the connecting tube 11. When the cap 41 abuts against the top of the connecting tube 11, it indicates that the sealing ring 4 is installed completely, and the clamp 5 is clamped and fixed in cooperation with the mounting portion 101. At this time, the high-voltage lead 3 continues to move downward until it is plugged into the lead-out piece 2.

[0027] The above embodiments are preferred embodiments of the present utility model. All structures similar to the present utility model and equivalent changes made thereto should fall within the protection scope of the present utility model.

Claims

1. A connection structure of a piezoelectric igniter, comprising a housing, a lead sheet and a high-voltage lead, wherein the lead sheet is arranged in the housing, and characterized in that: The shell is provided with a connecting pipe connected to the outside above the lead-out piece, and a sealing ring and a clamp for fixing the high-voltage lead are fixedly provided in the connecting pipe. The sealing ring is arranged on the top of the clamp, and the clamp includes a plurality of inclined plates, and the plurality of inclined plates are distributed in a ring, thereby forming a channel in the middle, and the inclined plates are arranged to be inclined downward, and the high-voltage lead is passed through the sealing ring and the clamp, and is plugged into the lead-out piece.

2. The connection structure of a piezoelectric igniter according to claim 1, characterized in that: The clamping member comprises an annular body, and a plurality of inclined plates are annularly arranged inside the annular body and gradually tilt downward from outside to inside.

3. The connection structure of a piezoelectric igniter according to claim 1, characterized in that: The outer diameter of the sealing ring is greater than or equal to the inner diameter of the connecting pipe, a through hole corresponding to the channel is provided in the middle of the sealing ring, and the diameter of the high-voltage lead is greater than or equal to the diameter of the through hole.

4. The connection structure of a piezoelectric igniter according to claim 1, characterized in that: A mounting portion for mounting a clamp is provided at the bottom of the connecting pipe, and the clamp is fixedly mounted between the sealing ring and the mounting portion.

5. The connection structure of a piezoelectric igniter according to claim 1, characterized in that: The sealing ring comprises a cover cap and a connecting section, and the cover cap is arranged on the top of the connecting pipe.

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