Dustproof horn switch

Abstract

The utility model relates to a dustproof horn switch which comprises a base and a button located above the base, the button is provided with a first contact, the button is installed in the base in a sliding mode in the vertical direction, the base is internally provided with a second contact corresponding to the first contact, and the dustproof horn switch further comprises a sealing sleeve located on the button. The sealing sleeve is made of a material easy to deform, the base comprises a working cavity and a matching cavity located above the working cavity, the width of the matching cavity is smaller than that of the working cavity, the sealing sleeve comprises a sealing plate and a sealing section located above the sealing plate, and the sealing plate is matched with the matching cavity in shape and size. And the sealing sleeve is connected with the button in a buckling manner. According to the dustproof horn switch, the sealing plate of the sealing sleeve can be stably located in the matching cavity when the button moves up and down, so that external dust and impurities cannot cross the sealing plate to enter the space between the base and the button.

Description

Technical Field

[0001] The utility model relates to the field of horn switches, in particular to a dustproof horn switch. Background Art

[0002] A horn switch is a device used to activate a horn. Existing horn switches mainly include a base and a button that slides into the base. When the horn switch is pressed, the contacts on the button will fit into the contacts in the base, closing the circuit. Current flows through the wires to the horn, and the horn emits a sound to alert others. However, if the button is released and moves upward to reset, dust and other tiny particles from the outside world may accidentally enter between the button and the base. They may accumulate on the contacts and cause poor contact, thereby affecting the function and life of the horn switch. In addition, if dust or tiny particles cause the button to move downwards unsmoothly or become stuck, the horn function may not be used normally, posing a safety hazard.

[0003] Therefore, how to improve the dustproof performance between the button and the base so as to isolate external dust and tiny particles from entering between the base and the button has become a problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the purpose of the present utility model is to provide a dustproof horn switch in which the sealing plate of the sealing sleeve can be stably located in the mating cavity during the up and down movement of the button, so that external dust and impurities cannot pass through the sealing plate and enter between the base and the button.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: it includes a base, a first spring and a button located above the base, a first contact is provided on the button, the button is slidably installed in the base along the up and down directions, a second contact is provided in the base corresponding to the first contact, and also includes a sealing sleeve located on the button, the sealing sleeve is made of a material that is easy to deform, the base includes a working cavity and a matching cavity located above the working cavity with a width smaller than the working cavity, the sealing sleeve includes a sealing plate and a sealing section located above the sealing plate, the shape and size of the sealing plate are adapted to the shape and size of the matching cavity, and the sealing sleeve is snap-fitted to the button.

[0006] The utility model is further configured as follows: the button includes a pressing section located in the mating cavity and a working section located in the working cavity, the first contact is located on the working section, the pressing section is in a cylindrical shape extending axially up and down, a limiting groove is provided inwardly on the pressing section, and the sealing section includes a limiting piece inserted in the limiting groove.

[0007] The utility model is further configured to include: a pressing plate located above the sealing plate, and the pressing plate is detachably connected to the base.

[0008] The present invention is further configured as follows: positioning plugs that are easy to deform are fixedly installed on both the front and rear sides of the pressure plate in the circumferential direction, and the base is provided with positioning slots corresponding to the positioning plugs.

[0009] The utility model is further configured such that each positioning insert is configured as a triangular prism with a narrow outer portion and a wide inner portion.

[0010] The utility model is further configured as follows: the base is provided with a positioning column protruding upward in the accommodating cavity, a matching groove for the positioning column to be installed is provided in the working section, and the first spring is located circumferentially between the working section and the base in the positioning column.

[0011] The present invention is further configured to include: a second spring; a mounting piece is detachably mounted on the working section; the first contact is located on the mounting piece; and the second spring is compressed and arranged between the mounting piece and the working section.

[0012] By adopting the above technical solution, 1. Since the shape and size of the sealing plate of the sealing sleeve are adapted to the matching cavity, the sealing plate is always located in the matching cavity during the process of pressing the button downward and resetting the button upward, so that external dust, moisture and other tiny particles cannot pass through the sealing plate, thereby isolating external dust and particles from entering between the base and the button, thereby avoiding impurities from accumulating on the first contact and the second contact, and avoiding the situation where the button moves up and down unsmoothly, and avoiding the situation where it is difficult to use the speaker normally and causing danger; 2. Since the sealing sleeve is buckled and connected to the button, the sealing sleeve can be stably located in the circumference of the button during the process of pressing the button downward and resetting the button upward. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 It is an assembly drawing of a specific embodiment of the utility model;

[0015] Figure 2 This is an exploded view of the utility model;

[0016] Figure 3 It is a cross-sectional perspective view of the utility model;

[0017] Figure 4 This is a cross-sectional view of the utility model from front to back;

[0018] Figure 5 This is a cross-sectional view of the present invention from top to bottom;

[0019] Figure 6 for Figure 3 A magnified view of middle A;

[0020] Figure 7 for Figure 5 Magnified view of B.

[0021] In the figure: 1-base, 11-working cavity, 12-matching cavity, 13-second contact, 14-positioning slot, 15-positioning column;

[0022] 2- first spring;

[0023] 3-button, 31-pressing section, 311-limiting slot, 32-working section, 321-mounting piece, 3211-first contact, 322-matching slot;

[0024] 4-sealing sleeve, 41-sealing plate, 42-sealing section, 421-limiting plug;

[0025] 5-pressing plate, 51-positioning plug;

[0026] 6- Second spring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] like Figure 1-Figure 7As shown, the utility model discloses a dustproof horn switch, including a base 1, a first spring 2 and a button 3 located above the base 1, wherein the button 3 is provided with a first contact 3211, the button 3 is slidably installed in the base 1 along the up and down directions, and the first spring 2 is located between the button 3 and the base 1, and the second contact 13 is provided in the base 1 corresponding to the first contact 3211. By pressing the button 3, the first contact 3211 moves downward and contacts the second contact 13, at this time, the button 3 is pressed to use the horn function, and after the pressing is completed, the button 3 is released. At this time, the elastic force of the first spring 2 will drive the button 3 to reset upward, thereby separating the first contact 3211 from the second contact 13 (this is the prior art and will not be elaborated here), and also includes a sealing sleeve 4 located on the button 3, the sealing sleeve 4 is made of a material that is easy to deform, such as rubber, the base 1 includes a working chamber 11 and a matching chamber 12 with a width smaller than the working chamber 11 and located above the working chamber 11, the working chamber 11 and the matching chamber 12 are connected to each other, and the sealing sleeve 4 is made of a material that is easy to deform, such as rubber, the base 1 includes a working chamber 11 and a matching chamber 12 with a width smaller than the working chamber 11 and located above the working chamber 11, The sleeve 4 includes a sealing plate 41 and a sealing section 42 located above the sealing plate 41. The shape and size of the sealing plate 41 are adapted to the shape and size of the matching cavity 12, and the sealing sleeve 4 is snap-fitted to the button 3. 1. Since the shape and size of the sealing plate 41 of the sealing sleeve 4 are adapted to the matching cavity 12, the sealing plate 41 is always located in the matching cavity 12 during the process of pressing the button 3 downward and resetting the button 3 upward. Therefore, external dust, moisture and other tiny particles cannot pass through the sealing plate 41, thereby isolating external dust and particles from entering between the base 1 and the button 3, thereby preventing impurities from accumulating on the first contact 3211 and the second contact 13, and at the same time preventing the button 3 from moving up and down smoothly, thereby preventing the occurrence of a dangerous situation caused by difficulty in using the speaker normally; 2. Since the sealing sleeve 4 is snap-fitted to the button 3, the sealing sleeve 4 can be stably located on the circumference of the button 3 during the process of pressing the button 3 downward and resetting the button 3 upward, thereby allowing the sealing plate 41 to move in the matching cavity 12 as the button 3 moves up and down.

[0029] Preferably, the button 3 includes a pressing section 31 located in the matching cavity 12 and a working section 32 located in the working cavity 11. The first contact 3211 is located on the working section 32. The pressing section 31 is cylindrical and extends axially up and down. A limiting groove 311 is recessed inwardly on the pressing section 31. The sealing section 42 includes a limiting plug 421 inserted into the limiting groove 311. Since the limiting groove 311 is recessed inwardly on the pressing section 31, the sealing sleeve 4 is sealed. When the segment 42 is installed on the pressing segment 31 from top to bottom, the limiting plug 421 will pass over the part of the pressing segment 31 located above the limiting groove 311 and then enter the limiting groove 311. Without the action of external force, the sealing segment 42 cannot move up and down compared with the pressing segment 31. After the limiting plug 421 is located in the limiting groove 311, the sealing segment 42 can be stably arranged around the pressing segment 31 so that the sealing sleeve 4 can move up and down accordingly when the button 3 is pressed.

[0030] Among them, it also includes a pressure plate 5 located above the sealing plate 41, and the pressure plate 5 is detachably connected to the base 1 by snapping, magnetic attraction, etc. Since the pressure plate 5 is detachably connected to the base 1, after the pressure plate 5 is installed in the base 1 and the connection with the base 1 is completed, the pressure plate 5 is always located above the sealing plate 41 when the button 3 is pressed downward or reset upward. Therefore, the pressure plate 5 can limit the path of the sealing plate 41 moving up and down, and since the pressure plate 5 will not be separated from the base 1 without the action of external force, unrelated personnel cannot remove the sealing sleeve 4 from the pressing section 31 and cannot access the inside of the base 1.

[0031] Among them, the pressure plate 5 is fixedly installed with positioning blocks 51 made of rubber or the like that are easy to deform on both the front and rear sides in the circumferential direction, and the base 1 is provided with positioning slots 14 corresponding to each positioning block 51. Since the pressure plate 5 is provided with positioning blocks 51 on both the front and rear sides, when the pressure plate 5 is installed above the base 1, that is, in the matching cavity 12, the positioning blocks 51 will be squeezed by the downward force. When the positioning blocks 51 and the corresponding positioning slots 14 are at the same height, the positioning blocks 51 can enter the corresponding positioning slots 14, so that the pressure plate 5 can be stably connected to the base 1.

[0032] Preferably, each positioning block 51 is configured as a triangular prism with a narrow outer side and a wide inner side. Since the upper end face width of each positioning block 51 is the narrowest and the lower end width is the largest, the outermost part of each positioning block 51, that is, the smallest width part, will first enter the corresponding positioning slot 14 during the process of the pressure plate 5 entering the matching cavity 12 downward. Therefore, the configuration of the positioning block 51 as a triangular prism with a narrow outer side and a wide inner side allows the positioning block 51 to be squeezed more smoothly during the downward movement of the pressure plate 5 and then inserted into the corresponding positioning slot 14 to complete the connection between the pressure plate 5 and the base 1.

[0033] In addition, the base 1 is provided with a positioning column 15 protruding upward in the accommodating cavity, and a matching groove 322 for the positioning column 15 to be installed is provided in the working section 32. The first spring 2 is located between the working section 32 and the base 1 in the circumferential direction of the positioning column 15. Since the first spring 2 is located in the circumferential direction of the positioning column 15 and the positioning column 15 is inserted into the matching groove 322, the positioning column 15 can limit the sliding path of the working section 32 during the up and down movement of the working section 32. At the same time, when the button 3 is pressed and reset to drive the working section 32 to move up and down, the first spring 2 can be deformed along the positioning column 15. Therefore, the positioning column 15 can guide the moving path of the working section 32 and the compression and reset direction of the first spring 2.

[0034] The first contact 3211 can be removably mounted on the mounting member 321 by means of a snap or the like. The first contact 3211 is located on the mounting member 321, and the second spring 6 is compressed and arranged between the mounting member 321 and the working section 32. Since the second spring 6 is compressed and arranged between the mounting member 321 and the working member, after the connection between the mounting member 321 and the working section 32 is completed, the elastic force of the second spring 6 can make the mounting member 321 tend to move outward, so that when the button 3 is pressed to move the first contact 3211, it can tend to move outward during the downward movement and cooperate with the second contact 13. Moreover, since the mounting member 321 can be removed from the working section 32, if the first contact 3211 is damaged, the pressure plate 5 can be removed from the top of the base 1 and the working section 32 of the button 3 can be moved upward so as to contact the mounting member 321, remove it, and then the first contact 3211 can be replaced.

[0035] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dustproof horn switch, comprising a base, a first spring, and a button located above the base, the button being provided with a first contact, the button being slidably mounted in the base in an up-and-down direction, and a second contact being provided in the base corresponding to the first contact, characterized in that: It also includes a sealing sleeve located on the button, the sealing sleeve is made of a material that is easy to deform, the base includes a working cavity and a matching cavity located above the working cavity with a width smaller than the working cavity, the sealing sleeve includes a sealing plate and a sealing section located above the sealing plate, the shape and size of the sealing plate are adapted to the shape and size of the matching cavity, and the sealing sleeve is snap-fitted to the button.

2. The dustproof horn switch according to claim 1, characterized in that: The button includes a pressing section located in the mating cavity and a working section located in the working cavity. The first contact is located on the working section. The pressing section is cylindrical and extends axially up and down. A limiting groove is recessed inwardly on the pressing section. The sealing section includes a limiting piece inserted into the limiting groove.

3. The dustproof horn switch according to claim 1 or 2, characterized in that: The utility model also comprises a pressing plate located above the sealing plate, wherein the pressing plate is detachably connected to the base.

4. The dustproof horn switch according to claim 3, characterized in that: Positioning plugs that are easy to deform are fixedly installed on both the front and rear sides of the pressure plate in the circumferential direction, and the base is provided with positioning slots corresponding to the positioning plugs.

5. The dustproof horn switch according to claim 4, characterized in that: Each positioning plug-in block is arranged in the shape of a triangular prism with a narrow outer side and a wide inner side.

6. The dustproof horn switch according to claim 2, characterized in that: The base is located in the accommodating cavity and is provided with a positioning column protruding upward. The working section is provided with a matching groove for the positioning column to be installed. The first spring is located between the working section and the base in the circumference of the positioning column.

7. The dustproof horn switch according to claim 2, characterized in that: It also includes a second spring. A mounting piece is detachably mounted on the working section. The first contact is located on the mounting piece. The second spring is compressed and arranged between the mounting piece and the working section.

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