Ceramic bushing with built-in riveting terminal and ceramic igniter

Abstract

The utility model discloses a riveting terminal concealed type ceramic bushing and a ceramic igniter, the lower end of the ceramic bushing is provided with a ceramic heating rod protection cavity, the cavity wall of the ceramic heating rod protection cavity partially expands outwards to form two opposite lug chambers, and the two lug chambers penetrate through the bottom surface of the ceramic bushing and extend towards the top surface of the ceramic bushing. Two wire outlets are formed in the positions, corresponding to the two ear chambers, of the top face of the ceramic sleeve and communicate with the two ear chambers correspondingly, and the portions, between the ceramic heating rod protection cavity and the guide outlets, of the ear chambers serve as riveting point protection cavities. Two riveting point protection cavities are arranged inside the ceramic bushing, so that two riveting terminals are hidden in the riveting point protection cavities of the ceramic bushing, riveting points of a lead and an external lead are isolated from the outside, a stable insulation effect is formed, in addition, the ceramic bushing protects the riveting terminals, and the connection strength of the lead and the external lead is high.

Description

Technical Field

[0001] This utility model relates to the field of electronic cigarette igniter technology, specifically to a ceramic sleeve with a riveted terminal and a ceramic igniter. Background Technology

[0002] Ceramic igniters are commonly used in fireplaces. They consist of a ceramic heating rod, a ceramic sleeve, and a lead wire. The ceramic heating rod has a heating circuit, and the two electrodes of the heating circuit are connected to the lead wire. The ceramic sleeve covers the ceramic heating rod and provides insulation protection for the electrodes. When the ceramic heating rod heats up to a certain temperature, it can ignite the wood in the fireplace.

[0003] Figure 1 This is an assembly diagram of the ceramic heating rod 1 and ceramic sleeve 2 of an existing ceramic igniter. Figure 2 This is a cross-sectional view of the ceramic heating rod and ceramic sleeve of an existing ceramic igniter in their assembled state, as shown below. Figure 3 yes Figure 1 A cross-sectional view of the ceramic sleeve 2 shows that the existing ceramic sleeve 2 has a heating rod lead outlet. The heating rod lead is connected to the external wire 4 through a riveting terminal 5. The riveting terminal 5 is completely independent of the outside of the ceramic sleeve. Heat shrink tubing 3 is sleeved on the outside of the riveting terminal 5 to achieve insulation. Since the temperature resistance of heat shrink tubing 3 is much lower than that of ceramic, the heat shrink tubing 3 often breaks during use, resulting in the exposed riveting terminal 5. This situation poses a certain safety hazard. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a ceramic sleeve with a concealed riveting terminal, which can hide the riveting point between the lead wire of the ceramic heating rod and the external wire, avoiding exposure of the riveting terminal and increasing safety.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] This utility model provides a ceramic sleeve with a built-in riveting terminal, characterized in that the lower end of the ceramic sleeve is provided with a ceramic heating rod protection cavity, the cavity wall of the ceramic heating rod protection cavity is partially expanded outward to form two opposing ear chambers, the two ear chambers penetrate the bottom surface of the ceramic sleeve and extend towards the top surface of the ceramic sleeve; with the bottom surface of the ceramic sleeve as the reference, the depth of the ceramic heating rod protection cavity is H1, the depth of the ear chamber is H2, and H1 < H2.

[0007] The top surface of the ceramic sleeve has two wire outlets corresponding to the two ear chambers. The two wire outlets are connected to the two ear chambers respectively. Each wire outlet and the corresponding ear chamber form a stepped hole with a smaller top and a larger bottom. The ear chamber is located between the ceramic heating rod protection cavity and the guide outlet, serving as a riveting point protection cavity.

[0008] Preferably, the cross-section of the rivet point protection cavity is arc-shaped, and the cross-section of the wire outlet is circular. Projected from top to bottom, the two wire outlets are projected into the two rivet point protection cavities respectively.

[0009] This utility model also provides a ceramic igniter, characterized in that it includes a ceramic heating rod, two external wires, and a ceramic sleeve with the riveted terminal inside.

[0010] Two leads are welded to one end of the ceramic heating rod. Each of the two leads is riveted to an external wire through a riveting terminal. The end of the ceramic heating rod with the leads is inserted into the ceramic heating rod protection cavity of the ceramic sleeve from bottom to top. The two riveting terminals are located in the two riveting point protection cavities and abut against the top surface of the riveting point protection cavity. The two external wires extend out from the top surface of the ceramic sleeve from the two wire outlets.

[0011] This utility model has the following beneficial effects:

[0012] The ceramic sleeve with concealed riveting terminals provided by this utility model hides the two riveting terminals inside the riveting point protection cavity of the ceramic sleeve by setting two riveting point protection cavities inside, so that the riveting point of the lead wire and the external wire is isolated from the outside world, forming a stable insulation effect. In addition, the ceramic sleeve protects the riveting terminals, making the connection strength between the lead wire and the external wire higher. Attached Figure Description

[0013] Figure 1 This is a three-dimensional assembly diagram of a ceramic igniter based on existing technology;

[0014] Figure 2 yes Figure 1 A cross-sectional view of the ceramic igniter assembly;

[0015] Figure 3 This is a cross-sectional view of an existing ceramic sleeve;

[0016] Figure 4 This is a perspective view of the ceramic sleeve according to an embodiment of the present utility model;

[0017] Figure 5 yes Figure 4 A bottom view of the ceramic sleeve;

[0018] Figure 6 yes Figure 5 A cross-sectional view of the ceramic sleeve along line BB;

[0019] Figure 7 This is a schematic diagram of the connection between the ceramic heating rod and the external wire in an embodiment of this utility model;

[0020] Figure 8 This is a three-dimensional schematic diagram of the ceramic igniter according to an embodiment of the present invention;

[0021] Figure 9 yes Figure 8 A partial cross-sectional view of a ceramic igniter. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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, they should not be construed as limitations on this utility model.

[0024] like Figures 1 to 4 As shown, this embodiment discloses a ceramic sleeve with a concealed riveting terminal (hereinafter referred to as the ceramic sleeve). The lower end of the ceramic sleeve 1 is provided with a protective cavity for a ceramic heating rod 5. The cavity wall of the protective cavity for the ceramic heating rod 5 is partially expanded outward to form two opposing ear chambers. The two ear chambers penetrate the bottom surface of the ceramic sleeve 1 and extend towards the top surface of the ceramic sleeve 1. Taking the bottom surface of the ceramic sleeve 1 as a reference, the depth of the protective cavity for the ceramic heating rod 5 is H1, and the depth of the ear chambers is H2, where H1 < H2. The top surface of the ceramic sleeve 1 is provided with two wire outlets 3 corresponding to the two ear chambers. The two wire outlets 3 are respectively connected to the two ear chambers. Each wire outlet 3 and the corresponding ear chamber form a stepped hole with a smaller upper part and a larger lower part. The part of the ear chamber between the protective cavity for the ceramic heating rod 5 and the guide outlet serves as a riveting point protection cavity 2. In this embodiment, the ceramic sleeve 1 is provided with two riveting point protection cavities 2, which can hide the riveting point of the lead wire 7 of the ceramic heating rod 5 and the external wire 9, avoid the riveting point being exposed, and increase safety.

[0025] Preferably, the cross-section of the rivet point protection cavity 2 is arc-shaped, which better matches the shape of the rivet terminal 8. Preferably, the cross-section of the wire outlet 3 is circular, which matches the shape of the circular-cross-section of the external wire 9. Projected from top to bottom, the two wire outlets 3 are projected into the two rivet point protection cavities 2 respectively. The size of the rivet point protection cavity 2 and the size of the wire outlet 3 should meet the usage requirements, avoiding the rivet point protection cavity 2 and the wire outlet 3 being too large, which would reduce the strength of the ceramic sleeve 1.

[0026] To better understand the working principle of the ceramic sleeve 1 in this embodiment, this embodiment also provides a ceramic igniter, including a ceramic heating rod 5, two external wires 9, and a ceramic sleeve 1. The ceramic heating rod 5 is a prior art material, and a heating circuit is printed on it. Two leads 7 are welded to two lead solder points 6 at one end of the ceramic heating rod 5, and the two leads 7 are connected to the two electrodes of the heating circuit. Each of the two leads 7 is riveted to an external wire 9 through a riveting terminal 8. The end of the ceramic heating rod 5 with the leads 7 is inserted into the protective cavity of the ceramic heating rod 5 from bottom to top. The two riveting terminals 8 are located in the two riveting point protective cavities 2 and abut against the top surface of the riveting point protective cavity 2 (thereby limiting the riveting terminals 8 and preventing them from protruding from the ceramic sleeve 1). The two external wires 9 extend from the top surface of the ceramic sleeve 1 from the two wire outlets 3. The riveting points (i.e., the riveting terminals 8) of the leads 7 of the ceramic heating rod 5 and the external wires 9 are inside the riveting point protective cavity 2 of the ceramic sleeve 1, isolated from the outside world, forming stable insulation. The ceramic sleeve 1 protects the riveting terminal 8, resulting in a high connection strength between the lead wire 7 and the external wire 9. Concealing the riveting terminal 8 within the ceramic sleeve 1 makes the assembled ceramic sleeve and ceramic heating rod appear simpler and more aesthetically pleasing.

[0027] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model. Therefore, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A crimped terminal recessed ceramic ferrule, characterized by, The lower end of the ceramic sleeve is provided with a ceramic heating rod protection cavity, the cavity wall of the ceramic heating rod protection cavity is partially expanded to form two opposite ear chambers, the two ear chambers penetrate the bottom surface of the ceramic sleeve and extend towards the top surface of the ceramic sleeve; taking the bottom surface of the ceramic sleeve as a reference, the depth of the ceramic heating rod protection cavity is H1, and the depth of the ear chamber is H2, H1 The top surface of the ceramic sleeve is provided with two wire outlets corresponding to the positions of the two ear chambers, the two wire outlets are respectively communicated with the two ear chambers, each wire outlet and the corresponding ear chamber form a stepped hole with a small size at the top and a large size at the bottom, and the part of the ear chamber between the ceramic heating rod protection cavity and the guide outlet serves as a riveting point protection cavity.

2. The crimped terminal-in-ceramic bushing of claim 1, wherein, The cross section of the riveting point protection cavity is arc-shaped, and the cross section of the wire outlet is circular, and the projection of the two wire outlets from top to bottom is respectively inside the two riveting point protection cavities.

3. A ceramic igniter characterized by, The riveting terminal concealed ceramic sleeve comprises a ceramic heating rod, two external wires and the riveting terminal concealed ceramic sleeve according to claim 1 or 2; One end of the ceramic heating rod is welded with two lead wires, the two lead wires are respectively riveted with an external wire through a riveting terminal, and the end of the ceramic heating rod welded with the lead wires is inserted into the ceramic heating rod protection cavity of the ceramic sleeve from bottom to top, the two riveting terminals are respectively located in the two riveting point protection cavities and abut against the top surface of the riveting point protection cavities, and the two external wires respectively extend out of the top surface of the ceramic sleeve from the two wire outlets.

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