Small push-pull switch

Abstract

The utility model discloses a small push-pull switch, which comprises a first power connection terminal clamped between an upper cover and a base, the base is provided with a first positioning column corresponding to the first power connection terminal, the first power connection terminal comprises an elastic arm, a connecting section and a first wiring end, the first wiring end is connected with the elastic arm through the connecting section, the connecting section is provided with a first positioning hole, and the first positioning hole is provided with a second positioning hole. The first power connection terminal sleeves the first positioning column through the first positioning hole, at least one side of the connection section is provided with a fixing part, the base is provided with an insertion hole, and the fixing part extends downwards into the insertion hole. According to the utility model, the first wiring terminal is inserted and fixed with the base in the vertical direction through the fixing part, so that the first wiring terminal can still be positioned and installed in the base after the first positioning column is broken, and the first wiring terminal can work stably and normally.

Description

Technical Field

[0001] The utility model relates to the technical field of push-pull switches, in particular to a small push-pull switch. Background Art

[0002] At present, the small push-pull switches on the market generally refer to push-pull switches with a length of 30mm and a width of 15mm and 10mm. The push-pull switch includes an upper cover, a base, a first terminal and a second terminal. The base is provided with a circular positioning column, and the first terminal and the second terminal are provided with a circular positioning hole. The first terminal and the second terminal are installed on the base after aligning the positioning column with the corresponding positioning hole. The diameter of the positioning column is usually 1mm. During the installation process, the positioning column is very easy to break, resulting in the first terminal and the second terminal can only be fixed by the clamping force of the upper cover and the base. When the first terminal and the second terminal are easy to move left and right, the static contact and the moving contact of the first terminal and the second terminal are misaligned, resulting in poor contact. Utility Model Content

[0003] The utility model aims to provide a small push-pull switch with a more reliable fixing of the first wiring terminal.

[0004] The purpose of the utility model is achieved in this way.

[0005] A small push-pull switch comprises a first power terminal sandwiched between an upper cover and a base, the base is provided with a first positioning column corresponding to the first power terminal, the first power terminal comprises an elastic arm, a connecting section and a first terminal, the first terminal and the elastic arm are connected through the connecting section, the connecting section is provided with a first positioning hole, the first power terminal is sleeved on the first positioning column through the first positioning hole, at least one side of the connecting section is provided with a fixing portion, the base is provided with a socket, and the fixing portion extends downward into the socket.

[0006] In the utility model, the first wiring terminal is plugged and fixed in the vertical direction by the fixing part and the base, so that the first wiring terminal can still be positioned and installed in the base after the first positioning column is broken, and the first wiring terminal can still work stably and normally.

[0007] The above technical solution can be further improved as follows.

[0008] Furthermore, the elastic arm, the connecting section and the first terminal are integrally stamped and formed, and the side surface of the connecting section is stamped and bent downward to form the fixing portion. The fixing portion is easy to manufacture.

[0009] Furthermore, a first protruding block is provided on one side of the socket, two second protruding blocks are provided on one side of the socket, a recess is provided between the two second protruding blocks, the side surfaces of the recess are aligned with the side surfaces of the first protruding block, and a gap is formed between the facing sides of the second protruding block and the first protruding block for the fixing part to be inserted. The second protruding block and the first protruding block cooperate to clamp the fixing part.

[0010] Furthermore, the width of the fixing portion is greater than the width of the recessed portion, so as to ensure that the second protruding block and the first protruding block can clamp the fixing portion.

[0011] Furthermore, the top surface of the first protruding block forms a first guiding surface facing the gap, and the top surface of the second protruding block forms a second guiding surface facing the gap, so as to facilitate the fixing part to be inserted into the gap.

[0012] Furthermore, the first terminal and the elastic arm are arranged vertically, which is applicable to various usage scenarios.

[0013] Furthermore, it includes a second power terminal clamped between the upper cover and the base, the base is provided with a mounting groove corresponding to the second power terminal, the bottom surface of the mounting groove is provided with a second positioning column, the second power terminal is provided with a second positioning hole, the second positioning hole is aligned and sleeved on the second positioning column, and the second power terminal is placed in the mounting groove.

[0014] Furthermore, a stopper is provided at the inner end of the installation slot, and a shielding portion is extended from the top side of the stopper toward the installation slot, and a clamping position for inserting the inner end of the second power terminal is formed between the shielding portion and the installation slot. The clamping position fixes the inner end of the second power terminal, and the shielding portion increases the creepage distance between the inner end of the second power terminal and the first power terminal, thereby improving safety and contributing to miniaturization of the push-pull switch.

[0015] Furthermore, it includes a push-pull seat and a supporting device clamped between the upper cover and the base, the supporting device has a tendency to move away from the base and closer to the upper cover, the push-pull seat slides between the upper cover and the base, the action end of the push-pull seat extends out of the upper cover, the second power terminal is provided with a static contact between the upper cover and the base, the first elastic arm is provided with a moving contact, the first elastic arm has a tendency to drive the moving contact away from the static contact, the push-pull seat is provided with a first protrusion, when the push-pull seat moves, the first protrusion presses down the first elastic arm, and the moving contact and the static contact are in contact.

[0016] Furthermore, the base is provided with a third positioning column, the corresponding connecting section is provided with a clearance hole, the upper cover is provided with a third positioning hole, the base and the upper cover are snap-connected, and the third positioning column passes through the clearance hole and is inserted into the third positioning hole. The third positioning column facilitates the positioning and installation of the base and the upper cover, and also serves the purpose of positioning the first terminal.

[0017] In the utility model, the first terminal is fixed by the first positioning hole, the clearance hole and the fixing part in cooperation with the first positioning column, the third positioning column and the jack, so that the installation is firm and the reliability is greatly improved. The second terminal is fixed by the second positioning column and the clamping position, so that the installation is more firm. The push-pull switch is more reliable as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural diagram of embodiment 1.

[0019] Figure 2 It is a schematic diagram of the exploded structure of the first embodiment when viewed from above.

[0020] Figure 3 This is a schematic diagram of the exploded structure of Embodiment 1 when viewed from above.

[0021] Figure 4 It is a schematic cross-sectional structure diagram of the first embodiment.

[0022] Figure 5 This is a schematic diagram of the base structure in Example 1.

[0023] Figure 6 It is a three-dimensional structural diagram of the second embodiment.

[0024] Figure 7 This is a schematic diagram of the exploded structure of the second embodiment when viewed from above.

[0025] Figure 8 This is a schematic diagram of the decomposed structure of the second embodiment when viewed from above.

[0026] Fig. 9 It is a schematic cross-sectional structure diagram of the second embodiment.

[0027] Fig.10 It is a three-dimensional structural diagram of embodiment three.

[0028] Fig.11 This is a schematic diagram of the decomposed structure of Example 3 from a top view.

[0029] Fig.12 This is a schematic diagram of the decomposed structure of Example 3 when viewed from the top.

[0030] Fig.13 It is a three-dimensional structural diagram of embodiment 4.

[0031] Fig.14 This is a schematic diagram of the exploded structure of Example 4 when viewed from above.

[0032] Fig.15 This is a schematic diagram of the decomposed structure of the fourth embodiment when viewed from above. DETAILED DESCRIPTION

[0033] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0034] Example 1, see Figure 1-5 As shown, a small push-pull switch includes an upper cover 1, a base 2, a first power terminal 3, a second power terminal 4, a push-pull seat 5 and a supporting device 6. The base 2 and the upper cover 1 are snap-connected, and the first power terminal 3, the second power terminal 4, the push-pull seat 5 and the supporting device 6 are clamped between the upper cover 1 and the base 2.

[0035] The upper cover 1 is provided with a third positioning hole 11 and a movable hole 12 .

[0036] The top of the base 2 is provided with a first positioning column 21, a third positioning column 22, a socket 7 and a mounting groove 8. A first protruding block 71 is provided on one side of the socket 7, and two second protruding blocks 72 are provided on one side of the socket 7. A recess 73 is provided between the two second protruding blocks 72. The side surfaces of the recess 73 are aligned with the side surfaces of the first protruding block 71. A gap 70 for inserting the fixing portion 30 is formed between the facing sides of the second protruding block 72 and the first protruding block 71. The top surface of the first protruding block 71 forms a first guide surface 74 facing the gap 70, and the top surface of the second protruding block 72 forms a second guide surface 75 facing the gap 70. Both the first guide surface 74 and the second guide surface 75 are inclined surfaces. There are two mounting grooves 8, which are arranged in parallel. The outer end of the mounting groove 8 extends out of the side surface of the base 2. A stopper 81 is provided at the inner end of the mounting groove 8. A shielding portion 82 extends from the top side of the stopper 81 toward the mounting groove 8. A clamping position 80 for inserting the inner end of the second power terminal 4 is formed between the shielding portion 82 and the mounting groove 8. A second positioning column 23 is disposed on the bottom surface of the mounting groove 8 close to the outer end.

[0037] In this embodiment, there are two first positioning posts 21, which are arranged side by side. The third positioning post 22 is arranged between the two first positioning posts 21 and close to the side of the base 2. There are two jacks 7, which are arranged symmetrically on the outside of the two first positioning posts 21.

[0038] The first electrical terminal 3 includes an elastic arm 31, a connecting section 32 and a first terminal 33, and the first terminal 33 and the elastic arm 31 are connected through the connecting section 32. In this embodiment, two parallel elastic arms 31 are provided on one side of the connecting section 32, a moving contact 34 is provided at the bottom of the end of the elastic arm 31, and a convex portion 35 is provided in the middle of the elastic arm 31. A first positioning hole 36 and a clearance hole 37 are provided on the connecting section 32, and a fixing portion 30 is provided on both sides of the connecting section 32, respectively. The fixing portion 30 extends downward relative to the connecting section 32, and the first terminal 33 extends out of the base 2, and the first terminal 33 and the elastic arm 31 are arranged in parallel. Preferably, the elastic arm 31, the connecting section 32 and the first terminal 33 are integrally stamped and formed, and the side of the connecting section 32 is stamped and bent downward to form the fixing portion 30. Preferably, the width of the fixing portion 30 is greater than the width of the recess 73, and the cross section of the fixing portion 30 in the vertical direction is a dovetail shape with multiple levels of connection.

[0039] The fixing process of the first electrical terminal 3 and the base 2: the first positioning hole 36, the clearance hole 37 and the fixing part 30 of the first electrical terminal 3 are aligned with the corresponding first positioning column 21, the third positioning column 22 and the plug hole 7, the first electrical terminal 3 is placed on the base 2, the first positioning hole 36 is inserted on the first positioning column 21, the clearance hole 37 is inserted on the third positioning column 22, the fixing part 30 is inserted into the gap 70 of the plug hole 7, the first protruding block 71 and the second protruding block 72 clamp the fixing part 30, specifically, the dovetail protruding parts on both sides of the fixing part 30 are staggered and clamped by the first protruding block 71 and the second protruding block 72, and the first protruding block 71, the second protruding block 72 and the fixing part 30 are matched in shape to reduce the contact area for easy insertion. The first electrical terminal 3 is installed.

[0040] In this embodiment, there is only one second power terminal 4. The second power terminal 4 is provided with a second positioning hole 41, the outer end of the second power terminal 4 forms a second wiring terminal 42, and the second power terminal 4 is provided with an upward static contact 43 near the inner end.

[0041] The fixing process of the second electrical terminal 4 and the base 2 is as follows: the second positioning hole 41 is aligned with the second positioning column 23, the first electrical terminal 3 is placed in the mounting groove 8, the second positioning hole 41 is inserted into the second positioning column 23, and the inner end of the first electrical terminal 3 is inserted into the clamping position 80. The second electrical terminal 4 is installed.

[0042] The push-pull seat 5 slides between the upper cover 1 and the base 2. An action end 51 is provided on the top surface of the push-pull seat 5, and a mounting hole 52 and a first protrusion 53 are provided on the bottom surface of the push-pull seat 5. The support device 6 is placed between the push-pull seat 5 and the base 2, and the support device 6 has a tendency to move away from the base 2 and closer to the upper cover 1. The support device 6 includes a spring 61 and a ball 62. The spring 61 and the ball 62 are placed in the mounting hole 52, and the bottom of the spring 61 and the ball 62 are against each other. A partition wall 24 is provided between the two corresponding elastic arms 31 of the base 2, and a plurality of gear grooves 25 are provided on the top surface of the partition wall 24. The push-pull seat 5 drives the ball 62 to move between the gear grooves 25, and the elastic force of the spring 61 causes the ball 62 to be against any gear groove 25.

[0043] After the third positioning hole 11 is aligned with the third positioning column 22, the upper cover 1 is buckled on the base 2, the action end 51 passes through the movable hole 12, the third positioning column 22 is inserted into the third positioning hole 11, and the upper cover 1 and the base 2 clamp the first power terminal 3 toward the second power terminal 4, and also clamp the push-pull seat 5 and the supporting device 6.

[0044] Usually, the first elastic arm 31 has a tendency to drive the moving contact 34 away from the static contact 43, that is, the moving contact 34 and the static contact 43 are separated, and the first power terminal 3 and the second power terminal 4 are de-energized. The push-pull seat 5 moves from the first power terminal 3 to the second power terminal 4, and the first protrusion 53 of the push-pull seat 5 presses down the first elastic arm 31 through the protrusion 35, so that the moving contact 34 and the static contact 43 are in contact, and the first power terminal 3 and the second power terminal 4 are energized. The block 81 limits the downward pressing range of the first elastic arm 31. Since the inner end of the second power terminal 4 is closer to the first elastic arm 31 than the static contact 43, the creepage distance of the inner end of the second power terminal 4 is shorter. The shielding portion 82 is placed between the inner end of the second power terminal 4 and the first elastic arm 31 to extend the creepage distance between the two and improve safety.

[0045] Example 2, see Figure 6-9 As shown, the difference between the embodiment 1 is that the first terminal 33 and the elastic arm 31 are arranged vertically, that is, the first terminal 33 and the second terminal 42 are respectively located on the adjacent sides of the small push-pull switch. The small push-pull switch is suitable for some electrical appliances with insufficient installation space in the straight direction of the base 2. In order to avoid the position of the first terminal 33, the first terminal 33 is provided on one side of the connecting section 32, and the fixing portion 30 is provided on the other side of the connecting section 32 opposite to the first terminal 33.

[0046] Example 3, see Figure 10-12As shown, the difference between the embodiment 1 and the embodiment 1 is that the small push-pull switch further includes a third power terminal 9, which has the same structure as the second power terminal 4. The second power terminal 4 and the third power terminal 9 are each installed in a mounting groove 8, and each corresponds to an elastic arm 31. Among them, a second protrusion 54 is provided on the bottom surface of the push-pull seat 5. The positions of the second protrusion 54 and the first protrusion 53 can be staggered or staggered and overlapped, so as to realize a one-in-one-out or / and one-in-two-out power-on state.

[0047] Example 4, see Figure 13-15 As shown, the difference between the embodiment 3 and the embodiment 3 is that the first terminal 33 and the elastic arm 31 are arranged vertically, that is, the first terminal 33 and the second terminal 42 are respectively located on the adjacent sides of the small push-pull switch. The small push-pull switch is suitable for some electrical appliances with insufficient installation space in the straight direction of the base 2. In order to avoid the position of the first terminal 33, the first terminal 33 is provided on one side of the connecting section 32, and the fixing portion 30 is provided on the other side of the connecting section 32 opposite to the first terminal 33.

[0048] In the present invention, the cross section of the first positioning column 21 is rectangular, and the cross sections of the third positioning column 22 and the second positioning column 23 are circular.

Claims

1. A small push-pull switch, comprising a first power terminal (3) sandwiched between an upper cover (1) and a base (2), the base (2) being provided with a first positioning column (21) corresponding to the first power terminal (3), the first power terminal (3) comprising an elastic arm (31), a connecting section (32) and a first wiring terminal (33), the first wiring terminal (33) and the elastic arm (31) being connected via the connecting section (32), the connecting section (32) being provided with a first positioning hole (36), the first power terminal (3) being sleeved on the first positioning column (21) via the first positioning hole (36), and characterized in that at least one side of the connecting section (32) is provided with a fixing portion (30), the base (2) is provided with a plug hole (7), and the fixing portion (30) extends downward into the plug hole (7).

2. The small push-pull switch according to claim 1 is characterized in that: The elastic arm (31), the connecting section (32) and the first wiring terminal (33) are integrally stamped and formed, and the side surface of the connecting section (32) is stamped and bent downward to form the fixing portion (30).

3. The small push-pull switch according to claim 1 is characterized in that: A first protruding block (71) is provided on one side of the insertion hole (7), two second protruding blocks (72) are provided on one side of the insertion hole (7), a recess (73) is provided between the two second protruding blocks (72), side surfaces of the recess (73) are aligned with side surfaces of the first protruding block (71), and a gap (70) is formed between the facing side surfaces of the second protruding block (72) and the first protruding block (71) for inserting the fixing portion (30).

4. The small push-pull switch according to claim 3 is characterized in that: The width of the fixing portion (30) is greater than the width of the recessed portion (73).

5. The small push-pull switch according to claim 3 is characterized in that: The top surface of the first protruding block (71) forms a first guiding surface (74) facing the gap (70), and the top surface of the second protruding block (72) forms a second guiding surface (75) facing the gap (70).

6. The small push-pull switch according to claim 1, characterized in that: The first wiring terminal (33) and the elastic arm (31) are arranged vertically.

7. The small push-pull switch according to claim 1, characterized in that: The invention comprises a second power terminal (4) sandwiched between an upper cover (1) and a base (2); the base (2) is provided with a mounting groove (8) corresponding to the second power terminal (4); a second positioning column (23) is provided on the bottom surface of the mounting groove (8); the second power terminal (4) is provided with a second positioning hole (41); the second positioning hole (41) is aligned with and sleeved on the second positioning column (23); and the second power terminal (4) is placed in the mounting groove (8).

8. The small push-pull switch according to claim 6, characterized in that: A stopper (81) is provided at the inner end of the installation groove (8), and a shielding portion (82) extends from the top side of the stopper (81) toward the installation groove (8), and a latching position (80) for inserting the inner end of the second power terminal (4) is formed between the shielding portion (82) and the installation groove (8).

9. The small push-pull switch according to any one of claims 1 to 8, characterized in that: The invention comprises a push-pull seat (5) and a support device (6) which are sandwiched between an upper cover (1) and a base (2); the support device (6) has a tendency to move away from the base (2) and closer to the upper cover (1); the push-pull seat (5) slides between the upper cover (1) and the base (2); an action end (51) of the push-pull seat (5) extends out of the upper cover (1); a second power terminal (4) is provided with a static contact (43) between the upper cover (1) and the base (2); a first elastic arm (31) is provided with a moving contact (34); the first elastic arm (31) has a tendency to drive the moving contact (34) away from the static contact (43); the push-pull seat (5) is provided with a first protrusion (53); when the push-pull seat (5) moves, the first protrusion (53) presses down the first elastic arm (31), and the moving contact (34) and the static contact (43) come into contact.

10. The small push-pull switch according to any one of claims 1 to 8, characterized in that: The base (2) is provided with a third positioning column (22), the corresponding connecting section (32) is provided with a clearance hole (37), and the upper cover (1) is provided with a third positioning hole (11); the base (2) and the upper cover (1) are snap-connected, and the third positioning column (22) passes through the clearance hole (37) and is inserted into the third positioning hole (11).

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