Connecting structure and explosion-proof loudspeaker using same

Abstract

The utility model relates to the technical field of explosion-proof horns, in particular to a connecting structure and an explosion-proof horn using the same. The connecting structure comprises a connecting pipe body, and a through first channel is formed in the connecting pipe body; the bottom end of the connecting pipe joint is inserted into the connecting pipe body, and a through second channel is formed in the connecting pipe joint; and the sealing plug is arranged in the bottom end of the connecting pipe joint, the sealing plug is columnar, a third through channel is formed in the sealing plug, and the two ends of the third channel communicate with the first channel and the second channel correspondingly. The columnar sealing plug is arranged in the connecting pipe joint, and after the columnar sealing plug is inserted into the connecting pipe joint, the columnar sealing plug is extruded by the connecting pipe body and the connecting pipe joint, the columnar sealing plug slightly expands and clings to the outer wall surface of the electric wire, and a tiny gap between sealing surfaces is filled, so that a better sealing effect is achieved, and airtightness and air tightness are realized; and the explosion-proof effect is good.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof speaker technology, specifically to a connection structure and an explosion-proof speaker using the same. Background Technology

[0002] In existing explosion-proof horn connecting pipe structures, flat rubber plugs are usually used to achieve sealing between the connecting pipe and the joint. However, during use, the flat rubber plug does not fit tightly enough with the connecting pipe or joint, resulting in insufficient air tightness and easy leakage, which leads to poor explosion-proof performance. Utility Model Content

[0003] The purpose of this utility model is to propose a connection structure and an explosion-proof horn using the same, aiming to solve the technical problem that the existing explosion-proof horn connection pipe using flat rubber plugs has insufficient sealing and is prone to air leakage.

[0004] To achieve the above objectives, this utility model proposes a connection structure, including a connecting pipe body, wherein a first through channel is provided inside the connecting pipe body;

[0005] A connecting pipe fitting, the bottom end of which is inserted into the body of the connecting pipe, and the connecting pipe fitting has a through second channel.

[0006] A sealing plug is disposed inside the bottom end of the connecting pipe joint, and the sealing plug is cylindrical. The sealing plug has a through third channel, and the two ends of the third channel are respectively connected to the first channel and the second channel.

[0007] Preferably, the connecting pipe joint is detachably connected to the connecting pipe body, and the connecting pipe body has a first cavity, a second cavity and a first channel connected in sequence, the diameter of the first cavity is greater than the diameter of the second cavity to form a first limiting step, and the bottom end of the connecting pipe joint abuts against the first limiting step;

[0008] The connecting pipe joint is provided with a second channel and a receiving cavity connected in sequence. The diameter of the receiving cavity is greater than the diameter of the second channel to form a second limiting step. The sealing plug is disposed in the receiving cavity, and the top end of the sealing plug abuts against the second limiting step, and the bottom end of the sealing plug abuts against the first limiting step.

[0009] Preferably, the sealing plug is cylindrical, with openings at both ends, the openings being connected to the third channel, and the diameter of the openings being less than the diameter of the third channel.

[0010] Preferably, the outer wall of the connecting pipe joint is provided with external threads, the inner wall of the connecting pipe body is provided with internal threads, and the connecting pipe joint is threadedly connected to the connecting pipe body.

[0011] Preferably, the connecting pipe joint extends horizontally outward to form a protrusion, and when the connecting pipe joint is inserted into the connecting pipe body, the top end of the connecting pipe body abuts against the bottom of the protrusion.

[0012] Preferably, the corners of the first limiting step and the second limiting step are inclined surfaces.

[0013] Preferably, the connecting pipe body includes a head, a neck, and a pipe portion arranged coaxially and sequentially, wherein the outer diameter of the head is greater than the outer diameter of the neck, which is greater than the outer diameter of the pipe portion.

[0014] The outer diameters of the head and the protrusion are the same, and the outer contours of both the head and the protrusion are hexagonal.

[0015] Preferably, the sealing plug is made of rubber.

[0016] Preferably, both the connecting pipe body and the connecting pipe joint are made of metal.

[0017] In addition, this utility model also proposes an explosion-proof horn that uses the above-mentioned connection structure.

[0018] The connection structure and explosion-proof horn using the present invention have the following advantages: The connection structure includes a connecting pipe body and a connecting pipe connector. The bottom end of the connecting pipe connector is inserted into the connecting pipe body for connection and fixation. A sealing plug is also provided inside the bottom end of the connecting pipe connector. The sealing plug is cylindrical in shape. After the cylindrical sealing plug is inserted into the connecting pipe connector, it will slightly expand after being squeezed by the two components of the connecting pipe body and the connecting pipe connector, and will closely adhere to the outer wall of the wire, filling the tiny gap between the sealing surfaces, thus achieving a better sealing effect and achieving better airtightness and explosion-proof performance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the connection structure of this utility model;

[0021] Figure 2 This is a cross-sectional structural diagram of the connection structure of this utility model;

[0022] Figure 3This is an exploded view of the connection structure of this utility model;

[0023] Figure 4 This is a cross-sectional structural diagram of the connecting pipe joint in the connection structure of this utility model.

[0024] In the attached diagram: 1-connecting pipe body, 11-first channel, 12-first cavity, 13-second cavity, 14-first limiting step, 141-inclined surface, 15-head, 16-neck, 17-pipe section, 2-connecting pipe connector, 21-second channel, 22-accommodating cavity, 23-second limiting step, 24-protrusion, 3-sealing plug, 31-third channel, 32-opening.

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that if the embodiments of this utility model involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0028] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] like Figures 1 to 4 As shown, a connection structure includes a connecting pipe body 1, wherein a through first channel 11 is provided inside the connecting pipe body 1;

[0030] A connecting pipe joint 2, the bottom end of which is inserted into the connecting pipe body 1, and a through second channel 21 is provided inside the connecting pipe joint 2;

[0031] A sealing plug 3 is disposed inside the bottom end of the connecting pipe joint 2, and the sealing plug 3 is cylindrical. The sealing plug 3 has a through third channel 31, and the two ends of the third channel 31 are respectively connected to the first channel 11 and the second channel 21.

[0032] The connection structure in this solution mainly includes a connecting pipe body 1 and a connecting pipe connector 2. The bottom end of the connecting pipe connector 2 is inserted into the connecting pipe body 1 for connection and fixation. A sealing plug 3 is also provided inside the bottom end of the connecting pipe connector 2. During actual installation, the wire can be inserted through the third channel 31 of the connecting pipe connector 2, and then pass through the second channel 21 of the sealing plug 3 and the first channel 11 of the connecting pipe body 1 in sequence, and exit from the end of the first channel 11. One end of the wire can be connected to the explosion-proof horn, and the other end can be connected to the power supply or other electrical components.

[0033] In particular, the sealing plug 3 inside the connecting pipe connector 2 in this solution is cylindrical in shape. After being inserted into the connecting pipe connector 2, the cylindrical sealing plug 3 will expand slightly after being compressed by the two components of the connecting pipe body 1 and the connecting pipe connector 2, and will stick tightly to the outer wall of the wire, filling the tiny gap between the sealing surfaces, thus achieving a better sealing effect and achieving better airtightness.

[0034] Furthermore, such as Figure 2 As shown, the connecting pipe joint 2 is detachably connected to the connecting pipe body 1. The connecting pipe body 1 has a first cavity 12, a second cavity 13 and a first channel 11 connected in sequence. The diameter of the first cavity 12 is greater than the diameter of the second cavity 13 to form a first limiting step 14. The bottom end of the connecting pipe joint 2 abuts against the first limiting step 14.

[0035] The connecting pipe joint 2 is provided with a second channel 21 and a receiving cavity 22 connected in sequence. The diameter of the receiving cavity 22 is greater than the diameter of the second channel 21 to form a second limiting step 23. The sealing plug 3 is disposed in the receiving cavity 22, and the top end of the sealing plug 3 abuts against the second limiting step 23, and the bottom end of the sealing plug 3 abuts against the first limiting step 14.

[0036] In this embodiment, the connecting tube body 1 includes a first cavity 12, a second cavity 13, and a first channel 11. The first cavity 12 is used for inserting the connecting tube connector 2, which has a sealing plug 3 embedded inside. The two ends of the sealing plug 3 are respectively pressed by the first limiting step 14 and the second limiting step 23, which has a good fixing effect.

[0037] Furthermore, the sealing plug 3 is cylindrical, with openings 32 at both ends. These openings 32 communicate with the third channel 31, and the diameter of the opening 32 is less than the diameter of the third channel 31. In this embodiment, the diameter of the third channel 31 is slightly larger than the diameter of the openings 32. The openings 32 at both ends of the sealing plug 3 can securely hold the passing wires in place, and the larger reserved space within the third channel 31 allows the power supply wires to pass through, resulting in better fixation of the sealing plug 3 for the wires.

[0038] Furthermore, the outer wall of the connecting pipe joint 2 is provided with external threads, and the inner wall of the connecting pipe body 1 is provided with internal threads. The connecting pipe joint 2 is threadedly connected to the connecting pipe body 1. In this embodiment, the connecting pipe body 1 and the connecting pipe joint 2 are preferably connected by threads, which facilitates the disassembly and assembly of both and allows for the replacement of the internal sealing plug 3 at any time.

[0039] In other embodiments, the connecting pipe joint 2 and the connecting pipe body 1 may also be connected by snap-fit ​​or other fixing methods.

[0040] Furthermore, the connecting pipe connector 2 extends horizontally outward to form a protrusion 24. When the connecting pipe connector 2 is inserted into the connecting pipe body 1, the top end of the connecting pipe body 1 abuts against the lower part of the protrusion 24. The protrusion 24 can better limit the position of the connecting pipe body 1. When the connecting pipe connector 2 is inserted and threaded into the connecting pipe body 1, the top end of the connecting pipe body 1 is pressed tightly by the protrusion 24, resulting in a better fixing effect.

[0041] Furthermore, the corners of the first limiting step 14 and the second limiting step 23 are inclined surfaces 141. The main function of the inclined surfaces 141 is for guidance. Since wires are installed in the first channel 11, the second channel 21 and the third channel 31, the inclined surfaces 141 facilitate the insertion of wires and also save some manufacturing materials.

[0042] Furthermore, such as Figures 2 to 3 As shown, the connecting pipe body 1 includes a head 15, a neck 16 and a pipe section 17 arranged coaxially and sequentially, wherein the outer diameter of the head 15 is greater than the outer diameter of the neck 16 and the outer diameter of the pipe section 17.

[0043] The outer diameters of the head 15 and the protrusion 24 are the same, and the outer contours of both the head 15 and the protrusion 24 are hexagonal.

[0044] The connecting pipe body 1 includes a head 15, a neck 16, and a pipe section 17 arranged sequentially. The diameters of the three parts gradually decrease, meaning that the diameter-changing part of the connecting pipe body 1 is formed gradually rather than abruptly. The bending deformation of the connecting pipe body 1 is gentle, which can reduce the tensile force on the connecting pipe body 1 during use, and the connecting pipe body 1 has high strength.

[0045] The head 15 of the connecting pipe body 1 and the protrusion 24 of the connecting pipe connector 2 are both hexagonal in shape, similar to a hexagonal nut, which makes it convenient for users to hold and tighten the connecting pipe body 1 and the connecting pipe connector 2.

[0046] Furthermore, the sealing plug 3 is made of rubber. Making the sealing plug 3 from rubber reduces manufacturing costs, and the rubber material provides excellent sealing performance and elastic deformation capacity, ensuring a tight and stable seal. Simultaneously, the rubber sealing plug 3 exhibits good wear resistance and fatigue resistance, resulting in a longer service life. Of course, in other embodiments, the sealing plug 3 may also be made of other elastic materials.

[0047] Furthermore, both the connecting pipe body 1 and the connecting pipe joint 2 are made of metal. To ensure the connection stability between the connecting pipe body 1 and the connecting pipe joint 2, both are usually made of metal or alloy materials, such as stainless steel, carbon steel, aluminum, etc. In this way, the connecting pipe body 1 and the connecting pipe joint 2 can have good strength and durability, and are not easily damaged even when subjected to large external forces.

[0048] In particular, this utility model also proposes an explosion-proof horn using the connection structure described above. This explosion-proof horn includes the connection structure of any of the above embodiments, and therefore has the same beneficial effects as the aforementioned connection structures, which will not be elaborated further here.

[0049] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A connection structure, characterized in that, include: The connecting pipe body (1) has a through first channel (11) inside; A connecting pipe joint (2) is inserted into the connecting pipe body (1) at its bottom end, and a through second channel (21) is provided inside the connecting pipe joint (2); A sealing plug (3) is disposed inside the bottom end of the connecting pipe joint (2), and the sealing plug (3) is cylindrical. A through third channel (31) is provided inside the sealing plug (3), and the two ends of the third channel (31) are respectively connected to the first channel (11) and the second channel (21).

2. The connection structure according to claim 1, characterized in that, The connecting pipe joint (2) is detachably connected to the connecting pipe body (1). The connecting pipe body (1) is provided with a first cavity (12), a second cavity (13) and a first channel (11) connected in sequence. The diameter of the first cavity (12) is greater than the diameter of the second cavity (13) to form a first limiting step (14). The bottom end of the connecting pipe joint (2) abuts against the first limiting step (14). The connecting pipe joint (2) is provided with a second channel (21) and a receiving cavity (22) connected in sequence. The diameter of the receiving cavity (22) is greater than the diameter of the second channel (21) to form a second limiting step (23). The sealing plug (3) is disposed in the receiving cavity (22), and the top end of the sealing plug (3) abuts against the second limiting step (23), and the bottom end of the sealing plug (3) abuts against the first limiting step (14).

3. The connection structure according to claim 1, characterized in that, The sealing plug (3) is cylindrical, and both ends of the sealing plug (3) are provided with openings (32). The openings (32) are connected to the third channel (31), and the diameter of the openings (32) is less than the diameter of the third channel (31).

4. The connection structure according to claim 1, characterized in that, The outer wall of the connecting pipe joint (2) is provided with external threads, and the inner wall of the connecting pipe body (1) is provided with internal threads. The connecting pipe joint (2) is threadedly connected to the connecting pipe body (1).

5. A connection structure according to claim 1 or 4, characterized in that, The connecting pipe joint (2) extends horizontally outward to form a protrusion (24). When the connecting pipe joint (2) is inserted into the connecting pipe body (1), the top end of the connecting pipe body (1) abuts against the bottom of the protrusion (24).

6. A connection structure according to claim 2, characterized in that, The corners of the first limiting step (14) and the second limiting step (23) are inclined surfaces (141).

7. A connection structure according to claim 5, characterized in that, The connecting pipe body (1) includes a head (15), a neck (16) and a pipe (17) arranged coaxially and sequentially, wherein the outer diameter of the head (15) is greater than the outer diameter of the neck (16) and the outer diameter of the pipe (17); The outer diameters of the head (15) and the protrusion (24) are the same, and the outer contours of the head (15) and the protrusion (24) are both hexagonal.

8. The connection structure according to claim 1, characterized in that, The sealing plug (3) is made of rubber.

9. A connection structure according to claim 1, characterized in that, Both the connecting pipe body (1) and the connecting pipe connector (2) are made of metal.

10. An explosion-proof horn, characterized in that, Use the connection structure as described in any one of claims 1-9.

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