Self-reset button switch

Abstract

The utility model discloses a self-resetting button switch, which comprises a shell seat, a button, two contact pieces arranged on the button, an input pin and two output pins, and the input pin and the output pins are arranged on the shell seat. And the two contact pieces comprise two connecting parts which are pressed in the two stepped grooves by the two conductive springs respectively, and two bridging parts which are bent and extend out of the two stepped grooves and are opposite to the two output pins. The two contact pieces are installed on the button through the two stepped grooves which are designed in a high-low staggered mode to form physical height difference, the two contact pieces are naturally assembled on the button in a high-low mode, the installation structure is simplified through the design, workers do not need to distinguish the assembly direction and the assembly position when assembling the contact pieces, the installation universality is good, and the installation efficiency is improved. Assembly errors are reduced, assembly efficiency is improved, and production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electrical switch technology, specifically to a self-resetting push button switch. Background Technology

[0002] Adjustable push-button switches are widely used in handheld power tools and household appliances, such as mixers and egg beaters. These switches have at least two control positions, enabling multi-speed control. One existing type of speed control push-button switch includes a switch housing, a button mounted on the housing, an input terminal, two output terminals, and two contact terminals. The two contact terminals are staggered on the button and are elastically electrically connected to the input terminal. During operation, pressing the button causes one contact terminal to contact one of the output terminals; further pressing causes the other contact terminal to contact the other output terminal, thus achieving the adjustment and control of the slow and fast speeds. However, this type of speed control push-button switch has the following problems during actual assembly: the two contact terminals require different orientations for accurate installation into the button's slots, which can easily lead to poor assembly and affect assembly efficiency. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to overcome the problem that the two contact terminals of the existing push-button speed control switch need to be oriented differently in order to be accurately installed into the slot of the button, which is prone to poor assembly and affects assembly efficiency. Thus, this utility model provides a self-resetting push-button switch with a simplified installation structure, good installation versatility, reduced assembly errors, improved assembly efficiency, and reduced production costs.

[0004] To solve the above-mentioned technical problems, this utility model provides a self-resetting push button switch, including a housing and a button that is oscillatingly disposed on the housing, two contacts disposed on the button, and an input pin and two output pins disposed on the housing. Two conductive springs are disposed between the two contacts and the input pins. The button has two stepped grooves arranged at different heights. The two contacts include two connecting parts that are pressed against the two stepped grooves by the two conductive springs, and two bridging parts that are bent and extended out of the two stepped grooves by the two connecting parts. A buffer gap is formed between the contacts and the stepped grooves. The two bridging parts are arranged at different heights and are opposite to the two output pins. Under the drive of the button, the two contacts make electrical contact with the two output pins successively through the bridging parts.

[0005] As a preferred embodiment, the stepped groove is formed with an upper stepped portion and a lower stepped portion having a certain height difference. The connecting portion is in a straight position and contacts the upper stepped portion, with a portion extending above the lower stepped portion. The bridging portion bends and extends outward from above the lower stepped portion to the outside of the stepped groove.

[0006] As a preferred embodiment, the buffer gap is formed between the connecting portion and the lower stepped portion, and a guide slope is provided on the side wall between the upper stepped portion and the lower stepped portion.

[0007] As a preferred embodiment, the bridging portion includes an extension piece extending along the height direction of the stepped groove and perpendicularly connected to one end of the connecting portion, and an L-shaped contact piece bent out of the stepped groove by the extension piece, the L-shaped contact piece being opposite to the output pin.

[0008] As a preferred embodiment, the output pin includes an output conductive sheet disposed on the inner bottom surface of the housing, and the L-shaped contact piece is in contact with the output conductive sheet under the action of the contact member.

[0009] As a preferred embodiment, the input pin includes an input conductive sheet disposed on the inner bottom surface of the housing. Two lower positioning blocks are spaced apart on the input conductive sheet. Two upper positioning blocks are disposed on the other end of the two connecting portions away from the bridging portion, which are vertically opposite to the two lower positioning blocks. The two ends of the two conductive springs are respectively positioned and connected to the two upper positioning blocks and the two lower positioning blocks.

[0010] As a preferred embodiment, a built-in cavity is formed between the housing and the button to accommodate two conductive springs and two contacts, with two bridging portions and two conductive springs arranged opposite each other in the built-in cavity.

[0011] As a preferred embodiment, the top of the housing is a top plate with a button, the top plate has an opening for exposing the button, and the two ends of the button are provided with limiting bosses that abut against the bottom surface of the top plate.

[0012] As a preferred embodiment, the housing includes a base plate and a plurality of sockets disposed on the base plate for inserting the input pin and the output pin, and elastic locking blocks are respectively provided on the sides of the input pin and the output pin to engage with the lower port of the socket.

[0013] As a preferred embodiment, the housing is provided with two sets of elastic locking arms at both ends, and the elastic locking arms are provided with multiple locking tooth structures.

[0014] Compared with the prior art, the technical solution of this utility model has the following advantages:

[0015] 1. The self-resetting push button switch provided by this utility model features two staggered stepped grooves on the button, into which two contacts are installed. Specifically, the two connecting parts of the two contacts are abutted in the stepped grooves by conductive springs, and the two bridging parts extend outwards from the stepped grooves in a staggered arrangement. The advantage of this technical solution is that the two contacts are installed on the button through the staggered stepped grooves, creating a physical height difference. This naturally results in the two contacts being assembled on the button at different heights, simplifying the installation structure and optimizing the anti-misassembly effect. Workers no longer need to distinguish the assembly direction and position when assembling the contacts, resulting in good installation versatility. This reduces assembly errors, speeds up assembly, and lowers production costs. Furthermore, pressing the button drives the two contacts to contact the two output pins sequentially. Time-division contact control enables speed adjustment of the product, and the change in contact pressure gradient between the two contacts can be clearly felt during operation, providing a smoother and clearer speed switching feel, thus improving product performance.

[0016] 2. In the self-reset push button switch provided by this utility model, an upper stepped portion and a lower stepped portion with a high and low distribution are formed in the stepped groove, and a guide slope is provided on the side wall between the upper stepped portion and the lower stepped portion. According to the fact that the contact is pressed against the upper stepped portion and a buffer gap is formed between it and the lower stepped portion, this structure allows the contact to elastically shift when pressed by the buffer gap and the guide slope formed in the stepped groove, reducing friction loss and avoiding permanent deformation of the contact caused by hard extrusion. Furthermore, the buffer gap allows the contact to automatically fine-tune its position after being pressed to meet the contact overtravel requirement, thereby ensuring a tighter contact between the contact and the output pin and improving contact stability.

[0017] 3. In the self-resetting push button switch provided by this utility model, the bridging part includes an L-shaped contact piece that is bent out of the stepped groove. The L-shaped contact piece is arranged opposite to the output conductive piece of the output pin. When the button is pressed, the contact piece and the output pin are made to make contact through the L-shaped contact piece and the output conductive piece. This design effectively increases the conductive area, reduces the contact resistance, has a high current carrying capacity, and can also reduce the heat generated when the current passes through, thereby improving the conductivity stability and safety. In addition, the larger contact area disperses the mechanical stress, enhancing the mechanical stability and vibration resistance.

[0018] 4. In the self-resetting push button switch provided by this utility model, two lower positioning blocks are provided on the input pin, and two upper positioning blocks are provided on the two connecting parts respectively. The two ends of the two conductive springs are respectively positioned and connected to the two upper positioning blocks and the two lower positioning blocks. This arrangement plays a positioning and connecting role for the two conductive springs, so as to prevent the conductive springs from being displaced during the compression process. The two conductive springs not only play a conductive role between the two contacts and the input pin, but also realize the automatic reset function of the button. That is, when there is no external force, the button will automatically reset and swing under the action of the spring, thereby driving the two contacts to disconnect from the two output pins. Attached Figure Description

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

[0020] Figure 1 A three-dimensional structural diagram of a self-resetting push button switch provided for utility model purposes;

[0021] Figure 2 A front view of a self-resetting push button switch provided for a utility model;

[0022] Figure 3 A top view of the self-resetting push button switch provided by the utility model;

[0023] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along line AA;

[0024] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure along line BB;

[0025] Figure 6 This is a schematic diagram of the structure of the contact element of the utility model installed on the button.

[0026] Figure Descriptions: 1. Housing; 2. Button; 21. Limiting boss; 3. Contact element; 31. Connecting part; 32. Bridging part; 321. Extension piece; 322. L-shaped contact piece; 33. Upper positioning block; 4. Conductive spring; 5. Stepped groove; 50. Buffer gap; 51. Upper stepped part; 52. Lower stepped part; 53. Guide slope; 6. Output pin; 61. Output conductive piece; 7. Input pin; 71. Input conductive piece; 72. Lower positioning block; 8. Elastic locking arm; 9. Elastic locking block. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] 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.

[0030] Example

[0031] This utility model provides, for example Figure 1-6The self-resetting push button switch shown includes a housing 1 and a button 2 pivotally disposed on the housing 1, two contacts 3 disposed on the button 2, and an input pin 7 and two output pins 6 disposed on the housing 1. Two conductive springs 4 are disposed between the two contacts 3 and the input pins 7. The button 2 has two stepped grooves 5 spaced apart and arranged at different heights. The two contacts 3 include two connecting portions 31 that are respectively pressed against the two stepped grooves 5 by the two conductive springs 4, and two bridging portions 32 that are bent out of the two stepped grooves 5 and opposite to the two output pins 6. A buffer gap 50 is formed between the contacts 3 and the stepped grooves 5. The two bridging portions 32 With the two output pins 6 staggered at different heights, the two contacts 3, driven by the button 2, make electrical contact with the two output pins 6 sequentially through the bridging part 32. The specific operation process is as follows: when the button 2 is pressed, it drives one of the contacts 3 to make contact with the output pin 6 first, thereby forming a first speed regulation circuit that allows current to pass through the input pin, the conductive spring, one of the contacts, and one of the output pins. Then, if the button 2 is pressed further down, it drives the other contact 3 to make contact with the other output pin 6, thereby forming a second speed regulation circuit that allows current to pass through the input pin, the conductive spring, the other contact, and the other output pin. This realizes the switching control of the button switch for the two speed regulation circuits.

[0032] The above-described implementation method is the core technical solution of this embodiment. By designing two staggered stepped grooves 5 on the button 2 and installing two contact pieces 3 into the two stepped grooves 5, the two connecting parts 31 are abutted in the stepped grooves 5 by the conductive spring 4, and the two bridging parts 32 extend out of the stepped grooves 5 in a staggered arrangement with one high and one low. The advantage of this technical solution is that the two contact pieces 3 are installed on the button through the staggered stepped grooves 5, forming a physical height difference. This naturally results in the two contact pieces being assembled on the button at different heights, simplifying the installation structure and optimizing the anti-misassembly effect. In this way, workers do not need to distinguish the assembly direction and position when assembling the contact pieces 3, resulting in good installation versatility. This reduces assembly errors, speeds up assembly, and lowers production costs. In addition, by pressing the button 2, the two contact pieces 3 are driven to contact the two output pins 6 one after the other. Through time-division contact control, the product can achieve the purpose of speed adjustment in different gears. During operation, the change in the contact pressure gradient of the two contact pieces can be clearly felt, providing a smoother and clearer gear switching feel and improving the performance of the product.

[0033] The following is combined Figure 4-6 The specific configuration of the contact elements is explained in detail:

[0034] The stepped groove 5 has an upper stepped portion 51 and a lower stepped portion 52 formed adjacent to each other with a certain height difference. The upper stepped portion 51 is higher than the lower stepped portion 52. The lower stepped portion 52 is the bottom surface of the stepped groove 5. The connecting portion 31 is flat and contacts the upper stepped portion 51, with a portion extending above the lower stepped portion 52. The bridging portion 32 bends and extends outward from the upper part of the lower stepped portion 52 to the outside of the stepped groove 5. The buffer gap 50 is formed between the connecting portion 31 and the lower stepped portion 52. A guide slope 53 is provided on the side wall between the upper stepped portion 51 and the lower stepped portion 52. The contact member 3 is pressed against the upper stepped portion 51 under the action of a spring. A buffer gap 50 is formed between the button 2 and the lower step 52. Therefore, when the button 2 causes the contact 3 to press against the output pin 6, the connecting part 31 of the contact 3 will overcome the spring force and elastically shift along the guide slope 53 into the buffer gap 50, which plays a role in pressure buffering. This structure allows the contact 3 to elastically shift when pressed by utilizing the buffer gap 50 formed in the stepped groove 5 and the guide slope 53, reducing friction loss and avoiding permanent deformation of the contact caused by hard pressing. Furthermore, the buffer gap 50 allows the contact 3 to automatically adjust its position after being pressed to meet the contact overtravel requirement, thereby ensuring a tighter contact between the contact and the output pin and improving contact stability.

[0035] For further optimization settings, refer to Figure 6 The bridging portion 32 includes an extension piece 321 extending along the height direction of the stepped groove 5 and perpendicularly connected to one end of the connecting portion 31, and an L-shaped contact piece 322 bent out of the stepped groove 5 from the extension piece 321. The L-shaped contact piece 322 is opposite to the output pin 6. Specifically, the output pin 6 includes an output conductive piece 61 disposed on the inner bottom surface of the housing 1. The L-shaped contact piece 322 is in contact with the output conductive piece 61 under the action of the contact member 3. The advantage of this design is that when the button is pressed, the contact member 3 and the output pin 6 achieve contact through the L-shaped contact piece 322 and the output conductive piece 61. This design effectively increases the conductive area, reduces contact resistance, has high current carrying capacity, and reduces heat generation when current passes through, thereby improving conductivity stability and safety. Furthermore, the larger contact area disperses mechanical stress, enhancing mechanical stability and vibration resistance.

[0036] like Figure 2-4As shown, a built-in cavity is formed between the housing and the button 2 to accommodate two conductive springs 4 and two contact pieces 3. Two bridging portions 32 and two conductive springs 4 are arranged opposite each other within the built-in cavity. To ensure the stability of the conductive springs 4 during installation and connection, the input pin 7 serves as a common pin, comprising an input conductive plate 71 disposed on the inner bottom surface of the housing 1 and two common pins extending through the bottom of the housing 1. Two lower positioning blocks 72 are spaced apart on the input conductive plate 71. The ends of the two connecting portions 31 away from the bridging portions 32 are provided with connections to the two lower positioning blocks 72. The two upper positioning blocks 33 are positioned opposite each other, and the two ends of the two conductive springs 4 are respectively positioned and connected to the two upper positioning blocks 33 and the two lower positioning blocks 72. This arrangement serves to position and connect the two conductive springs 4 to prevent displacement of the conductive springs 4 during compression. The two conductive springs 4 not only conduct electricity between the two contact pieces 3 and the input pin 7, but also realize the automatic reset function of the button 2. That is, when there is no external force, the button 2 will automatically reset and swing under the force of the spring, thereby driving the two contact pieces 3 to disconnect from the two output pins 6.

[0037] In this embodiment, as Figure 5 As shown, the top of the housing 1 is a top plate on which a button 2 is provided. The top plate has an opening for the button 2 to be exposed. Both ends of the button 2 are provided with limiting bosses 21 that abut against the bottom surface of the top plate, thereby limiting the button 2 when it is oscillating at the position of the installation opening. In addition, the housing 1 also includes a base plate and multiple sockets on the base plate for the input pin 7 and output pin 6 to pass through. Elastic locking blocks 9 are provided on the sides of the input pin 7 and output pin 6 respectively, which abut against the socket ports. The elastic locking blocks 9 and the base plate form a physical limiting interference, thereby generating a holding force to resist the input pin 7 and output pin 6 from being pulled out of the sockets, thereby enhancing the mechanical fixation of the input pin 7 and output pin 6 on the base plate, preventing them from falling off, and ensuring good installation stability.

[0038] To facilitate quick and easy installation of the push-button switch into the pre-set mounting holes, the housing 1 is equipped with two sets of elastic locking arms 8 at both ends. Each elastic locking arm 8 has multiple locking teeth. This design utilizes the elastic deformation properties of the plastic material, allowing the housing to be directly inserted into the pre-set mounting holes through a pressing action, without the need for additional screws, glue, or other auxiliary fasteners. The locking teeth further enhance the contact resistance of the elastic locking arms 8. This design simplifies the installation process of the push-button switch and improves production efficiency. Furthermore, the elastic locking arms generate a continuous preload during fixing, which can effectively absorb external vibration or impact energy, enhancing vibration and impact resistance.

[0039] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A self-resetting push button switch, comprising a housing (1) and a button (2) pivotally disposed on the housing (1), two contacts (3) disposed on the button (2), and an input pin (7) and two output pins (6) disposed on the housing (1), wherein two conductive springs (4) are disposed between the two contacts (3) and the input pin (7), characterized in that: The button (2) has two stepped grooves (5) arranged at different heights. The two contact members (3) include two connecting parts (31) pressed against the two stepped grooves (5) by two conductive springs (4) respectively, and two bridging parts (32) bent out of the two stepped grooves respectively from the two connecting parts (31). A buffer gap (50) is formed between the contact member (3) and the stepped groove (5). The two bridging parts (32) are arranged at different heights and are opposite to the two output pins. Under the drive of the button (2), the two contact members (3) make electrical contact with the two output pins (6) one after the other through the bridging parts (32).

2. The self-resetting push-button switch according to claim 1, characterized in that: The stepped groove (5) is formed with an upper stepped part (51) and a lower stepped part (52) forming a certain height difference. The connecting part (31) is in a straight position and contacts the upper stepped part (51) and extends to the upper stepped part (52). The bridging part (32) bends out from the upper part (52) and extends out of the stepped groove (5) from the outside.

3. The self-resetting push-button switch according to claim 2, characterized in that: The buffer gap (50) is formed between the connecting part (31) and the lower step part (52), and a guide slope (53) is provided on the side wall between the upper step part (51) and the lower step part (52).

4. The self-resetting push-button switch according to claim 2, characterized in that: The bridging portion (32) includes an extension piece (321) extending along the height direction of the stepped groove (5) and perpendicularly connected to one end of the connecting portion (31), and an L-shaped contact piece (322) bent out of the stepped groove (5) by the extension piece (321), the L-shaped contact piece (322) being opposite to the output pin (6).

5. The self-resetting push-button switch according to claim 4, characterized in that: The output pin (6) includes an output conductive sheet (61) disposed on the inner bottom surface of the housing (1), and the L-shaped contact (322) is in contact with the output conductive sheet (61) under the action of the contact member (3).

6. The self-resetting push button switch according to any one of claims 1-5, characterized in that: The input pin (7) includes an input conductive sheet (71) disposed on the inner bottom surface of the housing (1). Two lower positioning blocks (72) are formed at intervals on the input conductive sheet (71). Two upper positioning blocks (33) are disposed on the other end of the two connecting parts (31) away from the bridging part (32) and are vertically opposite to the two lower positioning blocks (72). The two ends of the two conductive springs (4) are respectively positioned and connected to the two upper positioning blocks (33) and the two lower positioning blocks (72).

7. The self-resetting push-button switch according to claim 1, characterized in that: The housing and the button (2) form an internal cavity that can accommodate two conductive springs (4) and two contacts (3). The two bridging parts (32) and the two conductive springs (4) are arranged opposite to each other in the internal cavity.

8. The self-resetting push-button switch according to claim 7, characterized in that: The top of the housing (1) is a top plate on which a button (2) is provided. The top plate has an installation opening that exposes the button (2). Both ends of the button (2) are provided with limiting bosses (21) that abut against the bottom surface of the top plate.

9. The self-resetting push-button switch according to claim 7, characterized in that: The housing (1) includes a base plate and a plurality of sockets provided on the base plate for inserting the input pin (7) and the output pin (6), and elastic locking blocks (9) are provided on the sides of the input pin (7) and the output pin (6) respectively, which abut against the socket ports.

10. The self-resetting push-button switch according to claim 9, characterized in that: The housing (1) is provided with two sets of elastic snap-fit ​​arms (8) at both ends, and the elastic snap-fit ​​arms (8) are provided with multiple snap-fit ​​tooth structures.

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