A normally open push switch

Abstract

This utility model discloses a normally open push-button switch, including a first housing, a second housing, a pressing member, a first conductive terminal, and a second conductive terminal. The inner ends of the pressing member, the first conductive terminal, and the second conductive terminal are all disposed within a mounting cavity formed by the first and second housings. The inner end of the first conductive terminal has a moving contact, and the inner end of the second conductive terminal has a stationary contact. The inner end of the pressing member abuts against the first conductive terminal near its inner end via a first elastic member. The first elastic member causes the pressing member to abut against the side wall of the mounting cavity, and the outer end of the pressing member extends out of the mounting cavity. A second elastic member is disposed within the mounting cavity. One end of the second elastic member abuts against the side wall of the mounting cavity, and the other end abuts against the first conductive terminal near its inner end. The second elastic member overcomes the elastic force of the first elastic member, causing the moving contact to move away from the stationary contact. Compared with the prior art, this utility model uses a stamped and bent first conductive terminal, eliminating the need for riveting, reducing production steps, and lowering production costs.

Description

Technical Field

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

[0002] Chinese patent CN219642708U discloses a micro switch, which includes a base. A pressing block is disposed in the upper left corner of the base and is slidably connected to the base. A spring is fixedly connected between the pressing block and the inner wall of the base. A spring sheet is disposed on the lower side of the spring. A first terminal is fixedly disposed on the lower side of the base. The first terminal is fixedly connected to the spring sheet by a rivet. A second terminal is disposed on the right side of the first terminal and fixedly disposed on the base. The spring sheet and the spring sheet terminal are riveted together.

[0003] It has the following shortcomings: 1. Riveting the spring contacts to the spring contact terminals increases the manufacturing process, leading to increased production. Second, after being subjected to gravity and repeated use, the spring contact may spontaneously cause the moving contact and stationary contact to make contact, resulting in switch failure and a limited service life. Third, the installation of the first terminal and spring sheet is relatively complex, resulting in low production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a normally open push-button switch that does not require riveting.

[0005] The purpose of this utility model is achieved as follows.

[0006] A normally open push-button switch includes a first housing, a second housing, a pressing member, a first conductive terminal, and a second conductive terminal. The inner ends of the pressing member, the first conductive terminal, and the second conductive terminal are all disposed within a mounting cavity formed by the first housing and the second housing. The first conductive terminal is L-shaped, with a moving contact at its inner end and a stationary contact at its inner end. The inner end of the first conductive terminal tends to move the moving contact away from the stationary contact. The inner end of the pressing member abuts against the first conductive terminal near its inner end via a first elastic member. The first elastic member causes the pressing member to abut against the side wall of the mounting cavity, and the outer end of the pressing member extends out of the mounting cavity. A second elastic member is disposed within the mounting cavity. One end of the second elastic member abuts against the side wall of the mounting cavity, and the other end of the second elastic member abuts against the first conductive terminal near its inner end. The second elastic member overcomes the elastic force of the first elastic member, causing the moving contact to move away from the stationary contact.

[0007] Furthermore, the first conductive terminal includes an integrally bent first conductive body and a second conductive body. The first conductive body is arranged horizontally, and the second conductive body is arranged vertically. The moving contact is provided at the left end of the first conductive body. A first arc portion is bent outward between the right end of the first conductive body and the upper end of the second conductive body. The first arc portion gives the left end of the first conductive body an elastic tendency to move away from the stationary contact.

[0008] The first arc section gives the first section of conductor good elastic deformation properties, making it less prone to breakage and with a long service life.

[0009] Furthermore, a second convex arc portion is bent out between the second conductor and the first arc portion.

[0010] The second arc section improves the elastic rebound performance of the first section of conductor.

[0011] Furthermore, the mounting cavity is provided with a support recess corresponding to the first arc portion, and at least two support portions are provided in the support recess to abut against the outer side of the first arc portion.

[0012] The first arc portion is not easily deformed, and the upward deformation range of the first arc portion is limited by the support portion.

[0013] Furthermore, the first conductive section has a concave portion that bends between the moving contact and the straight line of the first arc portion.

[0014] The first conductor design tilts the moving contact upwards and maintains a safe insulating distance from the stationary contact, while also reducing the required installation space.

[0015] Furthermore, the first elastic member abuts against the top surface of the recess, and the top of the second elastic member abuts against the bottom surface of the recess.

[0016] The overall spatial layout is reasonable, which helps to reduce the volume.

[0017] Furthermore, the second conductor is provided with a limiting part, which abuts against the side wall of the mounting cavity to maintain an insulating gap between the first conductive terminal and the second conductive terminal.

[0018] Furthermore, the pressing member is inverted T-shaped, and the bottom of the pressing member is provided with a first positioning groove. The top of the first elastic member is placed in the first positioning groove, and the mounting cavity is provided with a second positioning groove below the first positioning groove. The bottom of the second elastic member is placed in the second positioning groove.

[0019] The first and second elastic elements have a reasonable stress-bearing structure, which stably fixes the first section of the conductor.

[0020] Furthermore, one of the first housing and the second housing is provided with a pin hole and the other with a pin. The pin is aligned and inserted into the corresponding pin hole for an interference fit, so that the first housing and the second housing are closed.

[0021] The first and second housings are simple and easy to install.

[0022] Furthermore, one of the first housing and the second housing is provided with a guide post and the other with a guide hole. The guide post is provided with a mounting hole. The guide post is aligned and inserted into the corresponding guide hole so that the mounting hole connects to the outside of the first housing and the second housing.

[0023] Normally open push-button switches can be installed by positioning through mounting holes.

[0024] Compared with the prior art, the first conductive terminal of this invention is formed by stamping and bending, eliminating the need for riveting, reducing production steps. The structural design of the first conductive terminal facilitates assembly, improves production efficiency, and reduces production costs. The first conductive terminal also has a long service life. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of Embodiment 1.

[0026] Figure 2 This is a schematic diagram of the exploded structure of Example 1.

[0027] Figure 3 This is a schematic diagram of the exploded structure of Example 1 (from another perspective).

[0028] Figure 4 This is a cross-sectional structural diagram of Example 1. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Example 1, see Figure 1-4 As shown, a normally open push-button switch includes a first housing 1, a second housing 2, a pressing member 3, a first conductive terminal 4, a second conductive terminal 5, a first elastic member 6, and a second elastic member 7.

[0031] One of the first housing 1 and the second housing 2 is provided with a pin hole 11, and the other with a pin 21. The pin 21 is aligned and inserted into the corresponding pin hole 11 with an interference fit, so that the first housing 1 and the second housing 2 are closed. One of the first housing 1 and the second housing 2 is provided with a guide post 22, and the other with a guide hole 12. The guide post 22 is provided with a mounting hole 23. The guide post 22 is aligned and inserted into the corresponding guide hole 12, so that the mounting hole 23 communicates with the outside of the first housing 1 and the second housing 2. The inner ends of the pressing member 3, the first conductive terminal 4 and the second conductive terminal 5 are all disposed in the mounting cavity 8 formed by the closing of the first housing 1 and the second housing 2. In this embodiment, the pin hole 11 and the guide hole 12 are provided on the first housing 1, and the pin 21 and the guide post 22 are provided on the second housing 2.

[0032] The first conductive terminal 4 and the second conductive terminal 5 are clamped and fixed by the first housing 1 and the second housing 2. The outer ends of the first conductive terminal 4 and the second conductive terminal 5 both extend out of the mounting cavity 8, and the inner ends of the first conductive terminal 4 and the second conductive terminal 5 are both located in the mounting cavity 8. The inner end of the first conductive terminal 4 is provided with a moving contact 40, and the inner end of the second conductive terminal 5 is provided with a stationary contact 50, which is located below the moving contact 40.

[0033] The first conductive terminal 4 is L-shaped, and its inner end tends to move the moving contact 40 away from the stationary contact 50. Specifically, the first conductive terminal 4 includes a first conductive body 41 and a second conductive body 42 integrally bent. The first conductive body 41 is arranged horizontally, and the second conductive body 42 is arranged vertically. The moving contact 40 is located at the left end of the first conductive body 41. A first arc portion 43 is bent outward between the right end of the first conductive body 41 and the upper end of the second conductive body 42. The first arc portion 43 gives the left end of the first conductive body 41 an elastic tendency to move upward (i.e., away from the stationary contact 50). The mounting cavity 8 is provided with a support recess 81 corresponding to the first arc portion 43. Two support portions 82 are provided in the support recess 81 and abut against the outer side of the first arc portion 43. A second arc portion 44 is bent outward between the second conductive body 42 and the first arc portion 43. The first conductive body 41 has a recessed portion 45 that is bent between the moving contact 40 and the straight line of the first arc portion 43.

[0034] The second conductive section 42 has a limiting part 46 near the second arc portion 44. The limiting part 46 abuts against the side wall of the mounting cavity 8, maintaining an insulating gap between the first conductive terminal 4 and the second conductive terminal 5. In this embodiment, the second conductive section 42 is punched and bent to form the limiting part 46. The limiting part 46 is inclined relative to the second conductive section 42. When the outer end of the first conductive terminal 4 is subjected to force and moves downward, the limiting part 46 abuts against the mounting cavity 8 (specifically the first housing 1), preventing the first conductive terminal 4 from moving downward as a whole, thereby avoiding contact between the moving contact 40 and the stationary contact 50.

[0035] The second conductive terminal 5 is generally L-shaped. In this embodiment, the outer ends of the first conductive terminal 4 and the second conductive terminal 5 are abutted against the first housing 1 and the second housing 2 by a stepped portion, which prevents the first conductive terminal 4 and the second conductive terminal 5 from moving into the mounting cavity.

[0036] The inner end of the pressing member 3 abuts against the first elastic member 6 and the first conductive terminal 4 near its inner end. The first elastic member 6 causes the pressing member 3 to abut against the side wall of the mounting cavity 8. One end of the second elastic member 7 abuts against the side wall of the mounting cavity 8, and the other end of the second elastic member 7 abuts against the first conductive terminal 4 near its inner end. The second elastic member 7 overcomes the elastic force of the first elastic member 6, causing the moving contact 40 to move away from the stationary contact 50. Specifically, the pressing member 3 is inverted T-shaped, with the top of the pressing member 3 extending out of the mounting cavity 8. The bottom of the pressing member 3 is provided with a first positioning groove 31. The top of the first elastic member 6 is placed in the first positioning groove 31, and the bottom of the first elastic member 6 abuts against the top surface of the recessed portion 45. The mounting cavity 8 is provided with a second positioning groove 83 below the first positioning groove 31. The bottom of the second elastic member 7 is placed in the second positioning groove 83, and the top of the second elastic member 7 abuts against the bottom surface of the recessed portion 45. Both the first elastic member 6 and the second elastic member 7 are springs, and the diameter of the first elastic member 6 is smaller than the diameter of the second elastic member 7. The elastic force of the second elastic element 7 is greater than that of the first elastic element 6. The mounting cavity 8 is provided with a third positioning groove 84 corresponding to the pressing element 3, and the pressing element 3 is moved up and down and positioned in the third positioning groove 84.

[0037] Under normal conditions, the second elastic element 7 has a greater elastic force than the second elastic element 7, causing the moving contact 40 to move upward, separating the moving contact 40 from the stationary contact 50, and thus de-energizing the first conductive terminal 4 and the second conductive terminal 5.

[0038] When the pressing member 3 is subjected to force and moves downward, the pressing member 3 and the first elastic member 6 together push the first conductive body 41 to deform downward elastically and compress the second elastic member 7. The moving contact 40 and the stationary contact 50 come into contact, making the first conductive terminal 4 and the second conductive terminal 5 conductive. If the external force on the pressing member 3 disappears, the second elastic member 7 and the first conductive body 41 reset, pushing the pressing member 3 to reset, causing the moving contact 40 and the stationary contact 50 to separate.

[0039] The terms used in this utility model, such as "first," "second," etc., do not indicate any order, quantity, or importance, but are only used for distinction.

[0040] In this invention, terms such as "a" or "an" are used to indicate not a limitation on the quantity, but rather to indicate the existence of at least one of the mentioned objects.

[0041] In this utility model, terms indicating direction or location such as front end, rear end, top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, below, etc., are used to indicate relative positions rather than absolute positions.

[0042] Terms used in this invention, such as "approximately," "overall," "approximately," and "similar," are limiting terms used to indicate features that exist but allow for certain deviations. The amount of deviation allowed may vary depending on the specific context.

Claims

1. A normally open push switch comprising a first housing (1), a second housing (2), a pusher (3), a first conductive terminal (4), and a second conductive terminal (5), the inner ends of the pusher (3), the first conductive terminal (4), and the second conductive terminal (5) being disposed in a mounting cavity (8) formed by the first housing (1) and the second housing (2) being brought together, characterized in that, The first conductive terminal (4) is L-shaped in general. The inner end of the first conductive terminal (4) is provided with a moving contact (40), and the inner end of the second conductive terminal (5) is provided with a stationary contact (50). The inner end of the first conductive terminal (4) tends to drive the moving contact (40) away from the stationary contact (50). The inner end of the pressing member (3) abuts against the first conductive terminal (4) near the inner end through the first elastic member (6). The first elastic member (6) causes the pressing member (3) to abut against the side wall of the mounting cavity (8), and the outer end of the pressing member (3) extends out of the mounting cavity (8). The mounting cavity (8) is provided with a second elastic member (7). One end of the second elastic member (7) abuts against the side wall of the mounting cavity (8), and the other end of the second elastic member (7) abuts against the first conductive terminal (4) near the inner end. The second elastic member (7) overcomes the elastic force of the first elastic member (6) to make the moving contact (40) move away from the stationary contact (50).

2. The normally open push-button switch according to claim 1, characterized in that, The first conductive terminal (4) includes a first conductive body (41) and a second conductive body (42) integrally bent. The first conductive body (41) is arranged horizontally, and the second conductive body (42) is arranged vertically. The left end of the first conductive body (41) is provided with the moving contact (40). The right end of the first conductive body (41) and the upper end of the second conductive body (42) are bent to form an outwardly convex first arc portion (43). The first arc portion (43) gives the left end of the first conductive body (41) an elastic tendency to move away from the stationary contact (50).

3. The normally open push-button switch according to claim 2, characterized in that, The second conductor (42) and the first arc portion (43) are bent to form an inwardly convex second arc portion (44).

4. The normally open push-button switch according to claim 2, characterized in that, The mounting cavity (8) is provided with a support recess (81) corresponding to the first arc portion (43). The support recess (81) is provided with at least two support portions (82) that abut against the outer side of the first arc portion (43).

5. The normally open push-button switch according to claim 2, characterized in that, The first conductor (41) has a recessed portion (45) that bends between the moving contact (40) and the first arc portion (43).

6. The normally open push-button switch according to claim 5, characterized in that, The top surface of the first elastic element (6) abuts against the top surface of the recessed portion (45), and the top surface of the second elastic element (7) abuts against the bottom surface of the recessed portion (45).

7. The normally open push-button switch according to claim 2, characterized in that, The second conductor (42) is provided with a limiting part (46), which abuts against the side wall of the mounting cavity (8) to maintain an insulating gap between the first conductive terminal (4) and the second conductive terminal (5).

8. The normally open push-button switch according to claim 1, characterized in that, The pressing part (3) is inverted T-shaped. The bottom of the pressing part (3) is provided with a first positioning groove (31). The top of the first elastic part (6) is placed in the first positioning groove (31). The mounting cavity (8) is provided with a second positioning groove (83) below the first positioning groove (31). The bottom of the second elastic part (7) is placed in the second positioning groove (83).

9. The normally open push-button switch according to claim 1, characterized in that, The first housing (1) and the second housing (2) each have a pin hole (11) and a pin (21) respectively. The pin (21) is aligned and inserted into the corresponding pin hole (11) for interference fit, so that the first housing (1) and the second housing (2) are closed.

10. The normally open push-button switch according to claim 1, characterized in that, The first housing (1) and the second housing (2) each have a guide post (22) and a guide hole (12). The guide post (22) has a mounting hole (23). The guide post (22) is aligned and inserted into the corresponding guide hole (12) so that the mounting hole (23) connects the outside of the first housing (1) and the second housing (2).

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