Straight key switch with stable structure

Abstract

The utility model belongs to the field of straight key switch application, in particular to a straight key switch with a stable structure, which comprises an upper cover, a push rod and a base, one side of the end part of the upper cover is provided with an installation fixing hole, the upper cover covers the upper part of the push rod through the installation fixing hole, and the side edge of the push rod in the horizontal direction is provided with a plurality of metal elastic sheets. A plurality of base limiting grooves are formed in the base, a first contact terminal and a second contact terminal are inserted into the base limiting grooves, the push rod is installed in the base, and when the push rod slides in the base, the metal elastic sheet is in sliding contact with the first contact terminal and the second contact terminal. By changing the design structure of the second movable contact block, the pressing hand feeling of the straight key switch and the stability of contact conduction are improved.

Description

Technical Field

[0001] The utility model belongs to the application field of direct key switches, in particular to a direct key switch with a stable structure. Background Art

[0002] A direct-key switch is a common electrical device used to control the on / off and regulation of electrical equipment. It is widely used in a variety of electrical devices, including those in homes, industries, and businesses. While existing conventional direct-key switches have undergone corresponding technological innovations to accompany the rapid development of electrical automation, they currently suffer from the following technical issues: 1. During the reciprocating stroke, direct-key switches are prone to stagnation in the first half of the pressing stroke, resulting in an unsmooth feel and poor user feedback. 2. After a certain number of reciprocating presses on the push rod, the internal conductivity of the direct-key switch decreases, resulting in occasional poor contact. Utility Model Content

[0003] In order to solve the problems mentioned in the above background technology, a structurally stable straight key switch is proposed, including an upper cover, a push rod and a base. A mounting and fixing hole is provided on one side of the end of the upper cover, and the upper cover is covered on the upper part of the push rod through the mounting and fixing hole. A plurality of metal springs are provided on the horizontal side of the push rod, and a plurality of base limiting grooves are provided inside the base. A first contact terminal and a second contact terminal are inserted into the base limiting groove. The push rod is installed in the base. When the push rod slides inside the base, the metal springs slide in contact with the first contact terminal and the second contact terminal.

[0004] Preferably, a first movable contact block and a second movable contact block are respectively provided in the middle of the first contact terminal and the second contact terminal, the horizontal length of the second movable contact block is greater than the horizontal length of the first movable contact block, and the first contact terminal and the second contact terminal are alternately arranged on the base.

[0005] Preferably, a spring is connected to the middle of the metal dome, a raised push rod moving bar is provided on the outer bottom of the push rod, and one end of the spring away from the metal dome is fixed to the push rod moving bar.

[0006] Preferably, the spring is provided with spring limiting seats on the left and right sides in the horizontal direction, and the spring limiting seats are used to constrain the spring in the horizontal direction.

[0007] Preferably, shrapnel buffer seats are provided on both sides of the metal shrapnel in the horizontal direction. The shrapnel buffer seats are fixed inside the push rod and protrude toward the metal shrapnel, so as to buffer and protect the metal shrapnel in extreme cases.

[0008] Preferably, a base upper surface is provided on the upper portion of the base, and the upper portion of the second movable contact block remains parallel to the base upper surface.

[0009] Preferably, a base slide groove is further provided inside the base, and the base slide groove facilitates the horizontal movement of the push rod inside the base.

[0010] Preferably, base fixing blocks are provided on both sides of the middle of the bottom of the base, and the base fixing blocks are used to fix and support the entire straight key switch.

[0011] Preferably, an upper cover limiting column is provided at one end of the upper portion of the base, and a groove is provided at one end of the upper cover, which is closely connected to the upper cover limiting column and is used to constrain the upper cover and the base in the horizontal direction.

[0012] Preferably, the upper cover and the base are both integrally injection-molded using insulating material.

[0013] Compared to the prior art, the present invention provides a structurally stable straight-key switch with the following beneficial effects: 1. To address the issue of a smooth feel during the pressing process of the straight-key switch, the layout of the second movable contact block on the second contact terminal is modified, significantly reducing the gap between the metal spring and the first and second movable contact blocks. This minimizes the idle travel during the pressing process and improves the pressing feel. 2. The horizontal length of the second movable contact block is greater than that of the first movable contact block, and the horizontal upper edge of the second movable contact block is aligned with the upper surface of the base, increasing the contact area with the metal spring and enhancing the stability of the first and second movable contact blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0015] Figure 1 This is an overall large-scale diagram of an embodiment of the utility model.

[0016] Figure 2 This is an overall exploded view of an embodiment of the present utility model.

[0017] Figure 3 It is a side perspective exploded view of an embodiment of the present utility model.

[0018] Figure 4 It is a bottom view between the push rod and the base in the embodiment of the present utility model.

[0019] Figure 5 for Figure 4 A-axis partial enlarged view.

[0020] Reference numerals

[0021] 1 - Upper cover; 101 - Mounting hole; 102 - Upper cover limiting hole; 2 - Push rod; 201 - Metal spring; 202 - Spring limiting seat; 203 - Push rod moving bar; 204 - Spring buffer seat; 205 - Spring; 3 - Base; 301 - First contact terminal; 3011 - First movable contact block; 302 - Second contact terminal; 3021 - Second movable contact block; 303 - Base slide; 304 - Base fixing block; 305 - Base limiting slot; 306 - Base upper surface; 307 - Upper cover limiting column; DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention.

[0024] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, article, or apparatus. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0027] like Figure 1-5 A structurally stable straight key switch is shown, characterized in that it comprises an upper cover 1, a push rod 2, and a base 3. A mounting hole 101 is provided on one end of the upper cover 1. The upper cover 1 covers the upper portion of the push rod 2 through the mounting hole 101. Multiple metal springs 201 are provided on the horizontal sides of the push rod 2. Multiple base retaining grooves 305 are provided within the base 3. First and second contact terminals 301, 302 are inserted into the base retaining grooves 305. The push rod 2 is mounted within the base 3. When the push rod 2 slides within the base 3, the metal springs 201 slide into contact with the first and second contact terminals 301, 302. A first movable contact block 3011 and a second movable contact block 3021 are provided in the middle of the first and second contact terminals 301, 302, respectively. The horizontal length of the second movable contact block 3021 is greater than that of the first movable contact block 3011. The first and second contact terminals 301, 302 are alternately arranged on the base 3. A spring 205 is connected to the middle of the metal shrapnel 201, and a raised push rod moving bar 203 is provided on the outer bottom of the push rod 2. One end of the spring 205 away from the metal shrapnel 201 is fixed to the push rod moving bar 203. The spring 205 is provided with spring limit seats 202 on the left and right sides in the horizontal direction. The spring limit seats 202 are used to constrain the spring 205 in the horizontal direction. Shrapnel buffer seats 204 are provided on both sides of the metal shrapnel 201 in the horizontal direction. The shrapnel buffer seats 204 are fixed inside the push rod 2 and protrude towards the metal shrapnel 201. They are used to buffer and protect the metal shrapnel 201 in extreme situations. The upper part of the base 3 is provided with a base upper surface 306, and the upper part of the second movable contact block 3021 remains parallel to the base upper surface 306. The base 3 is also provided with a base slide 303 inside, which facilitates the horizontal movement of the push rod 2 within the base 3. Base fixing blocks 304 are provided on both sides of the bottom center of the base 3 to securely support the entire straight key switch. A top cover retaining post 307 is provided at one end of the base. One end of the top cover 1 is provided with a groove that abuts against the top cover retaining post 307, providing horizontal restraint between the top cover 1 and the base 3. Both the top cover 1 and the base 3 are integrally injection molded from an insulating material.

[0028] Working and installation principle: First, connect the lower end pins of multiple first contact terminals 301 and second contact terminals 302 to the base limit groove 305 on the base 3 respectively, and then align the movable push rod bar 203 at the bottom of the push rod 2 with the base slide groove 303 on the base 3, so that the push rod 2 as a whole can move along the base slide groove 303 inside the base 3, and connect the upper cover limit hole 102 of the upper cover 1 to the top upper part of the first contact terminal 301 and the second contact terminal 302. At the same time, the groove on one side of the upper cover 1 is abutted and fixed with the upper cover limit column 307 on the base 3, so that the upper cover 1 is buckled onto the upper part of the push rod 2.

[0029] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

Claims

1. A straight key switch with a stable structure, characterized by: It includes an upper cover, a push rod and a base. A mounting hole is provided on one side of the upper cover end. The upper cover is covered on the upper part of the push rod through the mounting hole. A plurality of metal springs are provided on the horizontal side of the push rod. A plurality of base limiting grooves are provided inside the base. A first contact terminal and a second contact terminal are inserted into the base limiting groove. The push rod is installed in the base. When the push rod slides inside the base, the metal springs slide in contact with the first contact terminal and the second contact terminal.

2. A structurally stable straight key switch according to claim 1, characterized in that: A first movable contact block and a second movable contact block are respectively provided in the middle of the first contact terminal and the second contact terminal. The horizontal length of the second movable contact block is greater than the horizontal length of the first movable contact block. The first contact terminal and the second contact terminal are alternately arranged on the base.

3. The structurally stable straight key switch according to claim 1, characterized in that: The middle part of the metal dome is connected with a spring, the outer bottom of the push rod is provided with a raised push rod moving bar, and one end of the spring away from the metal dome is fixed on the push rod moving bar.

4. A structurally stable straight key switch according to claim 3, characterized in that: The spring is provided with spring limiting seats on the left and right sides in the horizontal direction, and the spring limiting seats are used to constrain the spring in the horizontal direction.

5. The structurally stable straight key switch according to claim 1, characterized in that: Shrapnel buffer seats are provided on both sides of the metal shrapnel in the horizontal direction. The shrapnel buffer seats are fixed inside the push rod and protrude toward the metal shrapnel. They are used to buffer and protect the metal shrapnel in extreme situations.

6. A structurally stable straight key switch according to claim 2, characterized in that: The upper portion of the base is provided with a base upper surface, and the upper portion of the second movable contact block is kept parallel to the base upper surface.

7. The structurally stable straight key switch according to claim 1, characterized in that: A base sliding groove is also provided inside the base, and the base sliding groove facilitates the push rod to move horizontally inside the base.

8. The structurally stable straight key switch according to claim 1, characterized in that: Base fixing blocks are provided on both sides of the middle of the bottom of the base, and the base fixing blocks are used to fix and support the entire straight key switch.

9. The structurally stable straight key switch according to claim 1, characterized in that: An upper cover limiting column is provided at one end of the upper portion of the base, and a groove is provided at one end of the upper cover, which is closely connected to the upper cover limiting column and is used to constrain the upper cover and the base in the horizontal direction.

10. The structurally stable straight key switch according to claim 1, characterized in that: The upper cover and the base are both integrally injection-molded using insulating material.

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