Engineering machinery horn sealing structure

Abstract

The utility model relates to the field of engineering machinery, in particular to an engineering machinery horn sealing structure, which comprises a rear casing, an iron core mounted in the rear casing, a vibrating diaphragm mounted on the front side of the rear casing, a front retaining edge arranged on the outer ring of the front side of the rear casing and wrapping the outer ring of the vibrating diaphragm. The rear side of the front blocking edge is provided with an outer rubber layer which presses the vibrating diaphragm against the rear shell, the vibrating diaphragm is bonded on the rear shell through the outer rubber layer, and the front side of the rear shell is provided with a protruding edge which abuts against the outer rubber layer. The front side of the iron core is coated with a rear glue layer, the vibrating diaphragm is pressed against the front side of the rear glue layer, the vibrating diaphragm and the iron core are connected in a bonding mode through the rear glue layer, and the front side of the resonance board is provided with a rivet which sequentially penetrates through the resonance board and the rear glue layer and is fixed to the iron core. According to the engineering machinery horn sealing structure, the waterproof capability of the electric horn is effectively improved through the application of the front blocking edge and waterproof materials of all the adhesive layers, and the stability and reliability of the horn in various severe environments are ensured.

Description

Technical Field

[0001] The utility model relates to the field of engineering machinery, in particular to a sealing structure of an engineering machinery horn. Background Art

[0002] Excavators are a type of engineering machinery widely used in earthwork construction. As an important safety warning device on excavators, electric horns play a vital role. However, in adverse weather conditions, especially in rainy or humid environments, the waterproof performance of electric horns directly affects their normal operation and service life.

[0003] At present, electric horns on the market usually use a vibrating diaphragm as a sound-generating element, which is connected to an electrical connector through an armature and an iron core to achieve the conversion of electrical signals into acoustic signals. However, the periphery of the vibrating diaphragm is often prone to moisture intrusion, causing the electrical components inside the electric horn to be damaged by moisture, thereby affecting its normal operation. In order to solve this problem, existing waterproof designs mostly enhance the waterproof performance by adding waterproof covers, sealing pads and other structures, but these designs often have disadvantages such as complex structure, inconvenient installation, and poor waterproof effect, and need to be improved. Utility Model Content

[0004] The utility model aims to provide a sealing structure for an engineering machinery horn with a reliable structure and good waterproof sealing effect in view of the above problems.

[0005] In order to achieve the above-mentioned purpose, the utility model discloses a sealing structure of an engineering machinery horn, including a rear shell body, in which an iron core is installed. Its structural characteristics are that a vibration diaphragm is installed on the front side of the rear shell body, a front baffle is provided at the front outer ring of the rear shell body, the front baffle covers the outer ring of the vibration diaphragm, an outer rubber layer is provided on the rear side of the front baffle for pressing the vibration diaphragm against the rear shell body, the outer rubber layer bonds the vibration diaphragm to the rear shell body, and a convex edge is provided on the front side of the rear shell body for pressing against the outer rubber layer.

[0006] The front edge design covers the outer ring of the vibration diaphragm. This structure can prevent moisture from entering the electric horn from the outer periphery of the vibration diaphragm. The outer rubber layer presses the vibration diaphragm onto the rear shell, ensuring the stable installation and sealing effect of the vibration diaphragm, further enhancing the sealing performance and effectively preventing moisture penetration.

[0007] It also includes a soundboard. The front side of the iron core is coated with a back rubber layer. The vibration diaphragm is pressed against the front side of the back rubber layer. The back rubber layer bonds the vibration diaphragm to the iron core. The soundboard is pressed against the front side of the vibration diaphragm. The soundboard is pressed against the front side of the vibration diaphragm, which enhances the resonance effect of the sound and improves the sound quality.

[0008] The front side of the soundboard is provided with rivets which pass through the soundboard, the rear rubber layer and are fixed to the iron core in sequence. The design of the rivets not only fixes the soundboard, but also ensures the stability of the entire structure.

[0009] The soundboard is coated with a front rubber layer, which covers the joint between the rivet and the soundboard, further strengthening the waterproof ability of the entire structure and ensuring that the electric horn can work normally in various environments.

[0010] An electrical connector for connecting electrical components is arranged in the rear housing, and the electrical connector is covered with waterproof glue, which effectively prevents moisture from damaging electrical components and ensures the safety and reliability of the electric horn.

[0011] The convex edge is in a circular shape that matches the shape of the vibration diaphragm. The convex edge is in a circular shape that matches the shape of the vibration diaphragm. This design ensures a close fit between the convex edge and the vibration diaphragm, thereby enhancing the sealing effect.

[0012] The front end of the front baffle edge is tilted forward. The front end of the front baffle edge is tilted forward. Such a design may help guide water drops or other liquids to slide off the electric horn, further enhancing the waterproof performance.

[0013] In summary, the beneficial effect of the utility model is that the design of the front baffle covers the outer ring of the vibration diaphragm, and such a structure can prevent moisture from invading the interior of the electric horn from the periphery of the vibration diaphragm. The outer rubber layer presses the vibration diaphragm onto the rear shell, ensuring the stable installation and sealing effect of the vibration diaphragm, further enhancing the sealing, and effectively preventing moisture penetration. Through clever design and the application of waterproof materials, this solution effectively improves the waterproof ability of the electric horn and ensures its stability and reliability in various harsh environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 for Figure 1 A local enlarged structural diagram of point A in the middle;

[0016] Figure 3 It is a schematic diagram of the structure of the rear shell.

[0017] In the figure: rear shell 1, front stop 2, vibration diaphragm 3, resonance board 4, iron core 5, rear rubber layer 6, front rubber layer 7, electrical connector 8, outer rubber layer 9, convex edge 10, rivet 11. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0020] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0021] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0022] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0023] A sealing structure of an engineering machinery horn includes a rear housing 1, an iron core 5 is installed in the rear housing 1, a vibration diaphragm 3 is installed on the front side of the rear housing 1, a front baffle 2 is provided at the front outer ring of the rear housing 1, the front baffle 2 covers the outer ring of the vibration diaphragm 3, an outer rubber layer 9 is provided on the rear side of the front baffle 2 to press the vibration diaphragm 3 against the rear housing 1, the outer rubber layer 9 adheres the vibration diaphragm 3 to the rear housing 1, and a convex edge 10 is provided on the front side of the rear housing 1 to press against the outer rubber layer 9. Figure 1 The design of the front baffle 2 covers the outer ring of the vibration diaphragm 3. This structure can prevent moisture from invading the interior of the electric horn from the periphery of the vibration diaphragm 3. The outer rubber layer 9 presses the vibration diaphragm 3 onto the rear housing 1, ensuring the stable installation and sealing effect of the vibration diaphragm 3, further enhancing the sealing performance, and effectively preventing moisture penetration.

[0024] See attached Figure 1, also includes a sound board 4, the front side of the iron core 5 is coated with a rear glue layer 6, the vibration diaphragm 3 is pressed against the front side of the rear glue layer 6, and the rear glue layer 6 bonds the vibration diaphragm 3 to the iron core 5, the sound board 4 is pressed against the front side of the vibration diaphragm 3, and the sound board 4 is pressed against the front side of the vibration diaphragm 3, which enhances the resonance effect of the sound and improves the sound quality. The front side of the sound board 4 is provided with a rivet 11 that passes through the sound board 4 and the rear glue layer 6 in sequence and is fixed on the iron core 5. The design of the rivet 11 not only fixes the sound board 4, but also ensures the stability of the entire structure. The sound board 4 is coated with a front glue layer 7, and the front glue layer 7 covers the connection between the rivet 11 and the sound board 4. The waterproof ability of the entire structure is further strengthened to ensure that the electric speaker can work normally in various environments.

[0025] See attached Figure 3 An electrical connector 8 for connecting electrical components is provided in the rear housing 1, and the electrical connector 8 is covered with waterproof glue. The waterproof glue covering the electrical connector 8 effectively prevents moisture from damaging the electrical components, thereby ensuring the safety and reliability of the electric horn.

[0026] See attached Figure 2 The convex edge 10 is in a circular shape that matches the shape of the vibration diaphragm 3. The convex edge 10 is in a circular shape that matches the shape of the vibration diaphragm 3. This design ensures the close fit between the convex edge 10 and the vibration diaphragm 3, and enhances the sealing effect. The front end of the front baffle 2 is tilted forward. The front end of the front baffle 2 is tilted forward. This design may help guide water drops or other liquids to slide off the electric speaker, further enhancing the waterproof performance.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A sealing structure for a horn of an engineering machinery, comprising a rear housing (1), wherein an iron core (5) is installed in the rear housing (1), characterized in that: A vibration diaphragm (3) is installed on the front side of the rear shell (1); a front baffle (2) is provided at the front outer ring of the rear shell (1); the front baffle (2) covers the outer ring of the vibration diaphragm (3); an outer rubber layer (9) is provided on the rear side of the front baffle (2) for pressing the vibration diaphragm (3) against the rear shell (1); the outer rubber layer (9) adheres the vibration diaphragm (3) to the rear shell (1); and a convex edge (10) is provided on the front side of the rear shell (1) for pressing against the outer rubber layer (9).

2. The sealing structure of the engineering machinery horn according to claim 1, characterized in that: It also includes a sounding board (4), the front side of the iron core (5) is coated with a rear glue layer (6), the vibration diaphragm (3) is pressed against the front side of the rear glue layer (6), and the rear glue layer (6) adheres the vibration diaphragm (3) and the iron core (5), and the sounding board (4) is pressed against the front side of the vibration diaphragm (3).

3. The sealing structure of the engineering machinery horn according to claim 2, characterized in that: The front side of the soundboard (4) is provided with a rivet (11) which passes through the soundboard (4) and the rear rubber layer (6) in sequence and is fixed on the iron core (5).

4. The sealing structure of the engineering machinery horn according to claim 3, characterized in that: The soundboard (4) is coated with a front rubber layer (7), and the front rubber layer (7) covers the connection between the rivet (11) and the soundboard (4).

5. The sealing structure of the engineering machinery horn according to claim 1, characterized in that: An electrical connector (8) for connecting electrical components is provided in the rear housing (1), and the electrical connector (8) is covered with waterproof glue.

6. The sealing structure of the engineering machinery horn according to claim 1, characterized in that: The convex edge (10) is in a circular shape that matches the shape of the vibration diaphragm (3).

7. The sealing structure of the engineering machinery horn according to claim 1, characterized in that: The front end portion of the front baffle (2) tilts forward.

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