Front-inserted rear-pasted button switch

Abstract

The utility model provides a front-inserted back-attached button switch, which comprises a cover plate, a base, a button, an elastic sheet and a conducting strip assembly, the cover plate is U-shaped, the U-shaped cover plate comprises a cover plate main body and side plates respectively arranged at two sides of the cover plate main body, the middle part of a first mounting surface of the cover plate main body is provided with an insertion block, the two side plates are provided with L-shaped welding pins at two sides of the first mounting surface, and the L-shaped welding pins are arranged on the base. The inserting blocks are used for being inserted into inserting holes of a circuit board, the L-shaped welding feet are used for being welded and fixed to the circuit board, and elastic inverted buckles abutting against hooks at the bottom of the base are arranged on the inner walls of the side plates. According to the utility model, pre-positioning and main mechanical support of the switch are realized through early plugging of the plugging block and the circuit board jack, and lateral pressing force is effectively resisted, and the L-shaped welding pin provides secondary welding fixation, so that a dual fixation mode of front plugging and rear pasting is adopted, the installation is firm and reliable, the vibration resistance and impact resistance of the switch are greatly enhanced, and the service life of the switch is prolonged. The risk that fixing is not firm only through welding is fundamentally solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to switch technical field, concretely relates to a front plug behind stick button switch. BACKGROUND

[0002] As a common electronic component, button switch is widely used in various portable devices and control panels. Some button switches are installed on the circuit board in a lateral manner. The traditional installation method mainly relies on the pins at the bottom of the switch body to be welded with the printed circuit board (PCB) to realize electrical connection and mechanical fixation. Since the switch needs to bear frequent pressing force from the side during use, the force will be directly transmitted to the welding point, causing the welding point to fatigue and crack due to mechanical stress. Especially when subjected to accidental impact or vibration, the risk of insufficient installation firmness is more prominent. This not only may affect the reliability of electrical connection and shorten the service life of the switch, but also may cause the switch to come off the circuit board in extreme cases, resulting in device malfunction. SUMMARY

[0003] Therefore, the utility model solves the technical problem of the prior art, i.e. the button switch is not firmly installed, thereby providing a front plug behind stick button switch with firm installation.

[0004] To this end, the utility model provides a front plug behind stick button switch, which comprises a cover plate, a base, a button, a spring sheet and a conductive sheet assembly. The cover plate is U-shaped, comprising a cover plate body and side plates arranged on both sides of the cover plate body. A plug-in block is arranged in the middle of the first installation surface of the cover plate body. Both side plates have L-shaped welding feet on both sides of the first installation surface. The plug-in block is used for plugging with the jack of the circuit board, and the L-shaped welding feet are used for welding and fixing with the circuit board. An elastic reverse buckle is arranged on the inner wall of the side plate and hooks with the bottom of the base.

[0005] The elastic reverse buckle has a guide slope arranged at the front end in the insertion direction.

[0006] The conductive sheet assembly comprises a first conductive sheet having two first contacts in the base and an L-shaped first pin extending out of the base, and two first contacts corresponding to the two sides of the spring sheet; a second conductive sheet having a second contact in the base and an L-shaped second pin extending out of the base, the second contact being located between the two first contacts, and the second contact corresponding to the middle part of the spring sheet.

[0007] The first conductive sheet and the second conductive sheet each have a first joint on both sides in the length direction, which is embedded in the base by injection molding and comprises a first groove and a convex rib arranged at intervals.

[0008] The second contact is shaped with a second joint part bent downward and embedded into the inside of the base away from the end of the second conductive sheet.

[0009] The base is shaped with a second groove between the first contact and the second contact.

[0010] The technical scheme of the utility model has the following advantages:

[0011] 1. The button switch provided by the utility model realizes the pre-positioning and main mechanical support of the switch through the prior insertion of the plug block and the circuit board jack, effectively resists the lateral pressing force, and the L-shaped welding foot provides secondary welding fixation, so that the double fixation mode of pre-insertion and post-pasting is adopted, the installation is firm and reliable, the vibration resistance and impact resistance of the switch are greatly enhanced, and the risk of insecure welding fixation is fundamentally solved; in addition, the elastic inverted buckle is hooked with the base bottom, the cover plate and the base are firmly locked as a whole, and the internal components are prevented from loosening.

[0012] 2. The button switch provided by the utility model, the guide slope enables the elastic inverted buckle to smoothly slide into and elastically deform when the base is pressed into the cover plate, and finally the base is hooked. This simplifies the assembly operation, reduces the assembly difficulty, and is beneficial to improving the production yield and efficiency.

[0013] 3. The button switch provided by the utility model, through the insert injection structure of the first groove and the convex rib, the conductive sheet is tightly wrapped by the plastic matrix, the risk of the conductive sheet loosening from the base due to vibration or plugging stress in the use process is fundamentally avoided, further, the end of the second contact is bent downward and embedded into the base, which provides an additional anchoring point for the second conductive sheet, especially enhances the bending resistance and deformation resistance of the contact area, and further ensures the contact stability under long-term use.

[0014] 4. The button switch provided by the utility model sets the second groove between the first contact and the second contact, increases the creepage distance, can effectively isolate the electric arc generated when the switch is turned on and off, prevents the short circuit between the contacts, and improves the electrical safety, reliability and service life of the switch. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the utility model or the technical scheme in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0016] Figure 1The first perspective view of the button switch of the utility model;

[0017] Figure 2 The second perspective view of the button switch;

[0018] Figure 3 The explosion structure schematic view of the button switch;

[0019] Figure 4 The installation schematic view of the base and the conductive sheet assembly;

[0020] Figure 5 The perspective view of the conductive sheet assembly.

[0021] The figure mark explanation: 1, the cover plate; 2, the base; 3, button; 4, the elastic sheet; 5, the conductive sheet assembly; 6, the cover plate main body; 7, the side plate; 8, the plug block; 9, L-shaped welding foot; 10, the elastic inverted buckle; 11, the first conductive sheet; 12, the second conductive sheet; 13, the guide inclined plane; 14, the first contact; 15, the first pin; 16, the second contact; 17, the second pin; 18, the first combination part; 19, the first recess; 20, the convex rib; 21, the second combination part; 22, the second recess; 23, the first installation surface. DETAILED DESCRIPTION

[0022] The technical scheme of the utility model will be described clearly and completely below in conjunction with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the scope of protection of the utility model.

[0023] In the description of the utility model, it is necessary to explain that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relation shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it can not be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and can not be understood as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] Example

[0027] This embodiment provides a front-insertion, rear-mounted push-button switch, such as... Figure 3 As shown, it includes a cover plate 1, a base 2, a button 3, a spring 4, and a conductive sheet assembly 5.

[0028] Cover plate 1 is U-shaped, such as Figure 1 and Figure 2 As shown, the U-shaped cover plate 1 includes a cover plate body 6 and side plates 7 disposed on both sides of the cover plate body 6. The first mounting surface 23 of the cover plate body 6 is provided with an insertion block 8 in the middle. Both side plates 7 have L-shaped welding feet 9 on both sides of the first mounting surface 23. The insertion block 8 is used to be inserted into the socket of the circuit board, and the L-shaped welding feet 9 are used to be welded and fixed to the circuit board. The inner wall of the side plate 7 is provided with an elastic buckle 10 that abuts against the bottom of the base 2. The elastic buckle 10 has a guide slope 13 at its front end in the insertion direction.

[0029] Conductive sheet assembly 5, such as Figure 5 As shown, the device includes: a first conductive sheet 11 having two first contacts 14 located within the base 2 and an L-shaped first pin 15 extending outside the base 2, the two first contacts 14 correspondingly abutting against the two sides of the spring sheet 4; a second conductive sheet 12 having a second contact 16 located within the base 2 and an L-shaped second pin 17 extending outside the base 2, the second contact 16 being located between the two first contacts 14, the second contact 16 being correspondingly disposed with the middle portion of the spring sheet 4, and the end of the second contact 16 away from the second conductive sheet 12 having a downwardly bent second connecting portion 21 embedded inside the base 2. Both the first conductive sheet 11 and the second conductive sheet 12 have first connecting portions 18 located on both sides of their length direction, the first connecting portions 18 being embedded inside the base 2 by injection molding, and including spaced first grooves 19 and ribs 20, thereby making the connection between the conductive sheet and the base more secure.

[0030] The base 2, as shown in Figure 4 has a containing cavity for mounting the spring 4 and the button 3, and the bottom of the containing cavity is shaped with a second groove 22 between the first contact 14 and the second contact 16.

[0031] The button switch has the advantages that the plug-in block 8 is inserted into the line board jack in advance, the pre-positioning and the main mechanical support of the switch are realized, the lateral pressing force is effectively resisted, the L-shaped welding foot 9 provides secondary welding fixation, the double fixation mode of pre-insertion and post-pasting is adopted, the installation is firm and reliable, the anti-vibration and anti-impact capability of the switch is greatly enhanced, the risk of the welding fixation being not firm is fundamentally solved, and the inner member is prevented from loosening by adopting the elastic inverted buckle 10 and the base 2 bottom hooking to firmly lock the cover plate 1 and the base 2 as a whole.

[0032] Obviously, the above embodiments are only examples for clearly illustrating but not limiting the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. All the embodiments do not need to be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A front-insertion, rear-mounted push-button switch, characterized in that, The device includes a cover plate (1), a base (2), a button (3), a spring (4), and a conductive sheet assembly (5). The cover plate (1) is U-shaped. The U-shaped cover plate (1) includes a cover plate body (6) and side plates (7) disposed on both sides of the cover plate body (6). The cover plate body (6) has an insert (8) in the middle of the first mounting surface (23). Both side plates (7) have L-shaped welding feet (9) on both sides of the first mounting surface (23). The insert (8) is used to be inserted into the socket of the circuit board, and the L-shaped welding feet (9) are used to be welded and fixed to the circuit board. The inner wall of the side plate (7) is provided with an elastic buckle (10) that abuts against the bottom hook of the base (2).

2. The front-insertion, rear-attachment push-button switch according to claim 1, characterized in that, The elastic buckle (10) has a guide slope (13) located at its insertion front end.

3. The front-insertion, rear-attachment push-button switch according to claim 1, characterized in that, The conductive sheet assembly (5) includes: The first conductive sheet (11) has two first contacts (14) located inside the base (2) and an L-shaped first pin (15) extending out of the base (2). The two first contacts (14) abut against the two sides of the spring sheet (4). The second conductive sheet (12) has a second contact (16) located inside the base (2) and an L-shaped second pin (17) extending outside the base (2). The second contact (16) is located between two first contacts (14) and is correspondingly disposed to the middle of the spring sheet (4).

4. The front-insertion, rear-mounted push-button switch according to claim 3, characterized in that, Both the first conductive sheet (11) and the second conductive sheet (12) have a first joint portion (18) located on both sides of its length direction. The first joint portion (18) is embedded into the base (2) by injection molding. It includes a first groove (19) and a rib (20) arranged at intervals.

5. The front-insertion, rear-mounted push-button switch according to claim 3 or 4, characterized in that, The end of the second contact (16) away from the second conductive sheet (12) is formed with a second joint (21) that is bent downward and embedded into the base (2).

6. The front-insertion, rear-mounted push-button switch according to claim 3, characterized in that, The base (2) is formed with a second groove (22) located between the first contact (14) and the second contact (16).

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