Subminiature large-current button switch

Abstract

The utility model provides a subminiature large-current button switch. Comprising a switch base, an outer shell covering the switch base, a button structure arranged on the outer shell, a pin arranged on the switch base, a static contact electrically connected with the pin, a moving plate moving relative to the static contact, and a moving contact arranged on the moving plate and electrically connected with the static contact. A first spring is arranged between the moving plate and the switch base, the bottom face of the moving plate is connected with the first spring in an abutting mode, and the top face of the moving plate is connected with the button structure in an abutting mode. According to the button switch, a moving plate structure with an electric contact is used, a hole is not formed in the middle of the moving plate any more, the design of a sleeve is omitted, the button switch can be used in a large-current product, the size of the button switch can be reduced, and the requirement that the size of a small household appliance is smaller and smaller is met.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical switches, and in particular to an ultra-small high-current push button switch. Background Art

[0002] A push button switch is a switch that uses a button to push the transmission mechanism to connect or disconnect the moving contact and the static contact and realize circuit switching. A push button switch is a main control electrical appliance with a simple structure and a wide range of applications.

[0003] There are two types of push button switches currently used for home appliances on the market. One type has electrical contacts, but the push button switches are relatively large in size and it is difficult to meet the demand for smaller and smaller sizes of small home appliances such as hair dryers. For example, there is a hole in the middle of the moving piece with electrical contacts for the sleeve to pass through the hole, but such a structure will increase in size. The other type is without electrical contacts. This type of push button switch is smaller in size, but the current that can pass through is smaller, not exceeding 3A. For example, for the moving piece without electrical contacts, the sleeve is directly combined with the moving piece, but the current that can pass through such a structure is smaller. Summary of the invention

[0004] The utility model aims to overcome the deficiencies of the prior art and provide an ultra-small high-current push button switch.

[0005] To achieve the above-mentioned purpose, the technical solution provided by the utility model is: an ultra-small high-current push button switch, comprising a switch base, an outer shell covering the switch base, a button structure arranged on the outer shell, pins arranged on the switch base, a static contact electrically connected to the pins, a movable piece moving relative to the static contact, and a movable contact arranged on the movable piece and electrically connected to the static contact, a first spring is arranged between the movable piece and the switch base, the bottom surface of the movable piece is resistively connected to the first spring, and the top surface of the movable piece is resistively connected to the button structure.

[0006] Preferably, a channel groove is formed in the outer shell, and the channel groove is used to limit the movable plate to move only up and down.

[0007] Preferably, a spring groove is formed on the switch base, and the first spring is arranged in the spring groove.

[0008] Furthermore, the bottom of the spring slot may be formed to extend outward relative to the bottom of the switch base.

[0009] Preferably, the button structure comprises a button cap extending from a through hole formed on the outer shell and a locking structure arranged between the button cap and the movable plate, wherein the locking structure enables the movable plate to continuously maintain a depressed state.

[0010] Furthermore, the locking structure includes a rotating column inserted in the button cap, a second spring arranged between the rotating column and the moving plate, an active pressure tooth formed on the outer wall of the button cap, a driven rotating tooth formed on the outer wall of the rotating column and meshing with the active pressure tooth, a ratchet formed on the inner wall of the through hole, and a driven block formed on the outside of the driven rotating tooth and meshing with the ratchet tooth, the rotation of the driven rotating tooth is controlled by the active pressure tooth, and the driven rotating tooth returns to its original position through the ratchet tooth.

[0011] Furthermore, the ratchet is formed with a plurality of notched grooves on the inner wall of the through hole, and the active pressing tooth is formed with a protrusion extending outwardly and being inserted into the notched grooves.

[0012] Furthermore, a convex column connected to the first spring is formed on the lower surface of the movable plate, and a groove connected to the second spring is formed on the upper surface of the movable plate, and the convex column and the groove are integrally formed.

[0013] Compared with the prior art, this solution uses a moving piece structure with electrical contacts, and no longer opens a hole in the middle of the moving piece, thus eliminating the need for a sleeve design. It can not only be used in high-current products, but also reduce the size of the push button switch, meeting the requirements for smaller and smaller sizes of small household appliances. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0015] Figure 2 The overall decomposition structure of the utility model is shown in FIG. Figure 1 ;

[0016] Figure 3 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0017] Figure 4 The overall decomposition structure of the utility model is shown in FIG. Figure 2 ;

[0018] Figure 5 The overall decomposition structure of the utility model is shown in FIG. Figure 3 ;

[0019] Figure 6 The overall decomposition structure of the utility model is shown in FIG. Figure 4 ;

[0020] Figure 7 This is a schematic diagram of the overall cross-sectional structure of the utility model;

[0021] Figure 8 This is a schematic diagram of the structure of the outer shell of the utility model;

[0022] Fig. 9This is a schematic diagram of the cross-sectional structure of the outer shell of the utility model;

[0023] Fig.10 This is a schematic diagram of the button cap structure of the utility model;

[0024] Fig.11 This is a schematic diagram of the structure of the rotating column of the utility model. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with specific embodiments: Example

[0026] Benru Figure 1-11 As shown, an ultra-small high-current push button switch of the utility model comprises a switch base 1, an outer shell 2 covering the switch base 1, a button structure 3 arranged on the outer shell 2, a pin 4 arranged on the switch base 1, a static contact 5 electrically connected to the pin 4, a moving piece 6 moving relative to the static contact 5, and a moving contact 7 arranged on the moving piece 6 and electrically connected to the static contact 5. A first spring 8 is arranged between the moving piece 6 and the switch base 1, the bottom surface of the moving piece 6 resists connection with the first spring 8, and the top surface of the moving piece 6 resists connection with the button structure 3. By pressing the button structure 3, the button structure 3 compresses the moving piece 6 downward to the first spring 8, so that the moving contact 7 is electrically connected to the static contact 5. The difference from the push button switch on the existing market is that the present application does not use a sleeve design, and does not require a forming hole on the moving piece 6. The moving piece 6 directly supports the button structure 3 on the upper side and is connected to the first spring 8 on the lower side. It can not only be used in high-current products, but also can reduce the volume of the push button switch to meet the requirements of smaller and smaller volumes of small household appliances.

[0027] In order to enable the movable plate 6 to stably press down the first spring 8 so that the movable contact 7 is well electrically connected to the static contact 5, a channel groove 22 is formed in the outer shell 2. When the outer shell 2 is covered on the switch base 1, the channel groove 22 is used to limit the movable plate 6 to move only up and down.

[0028] Similarly, in order to further position the first spring 8, a spring groove 11 is formed on the switch base 1, and the first spring 8 is arranged in the spring groove 11; and the volume of the main body of the push button switch can be further reduced. The bottom of the spring groove 11 can be extended outward relative to the bottom of the switch base 1, so that the internal space of the push button switch is further compressed.

[0029] The button structure 3 includes a button cap 31 extending from a through hole 21 formed on the outer shell 2 and a locking structure arranged between the button cap 31 and the movable plate 6. The locking structure enables the movable plate 6 to continuously maintain a downwardly pressed state and can be used in products that require the movable contact 7 to be electrically connected to the static contact 5 for a long time.

[0030] The locking structure includes a rotating column 32 inserted in the button cap 31, a second spring 33 arranged between the rotating column 32 and the moving plate 6, an active pressure tooth 311 formed on the outer wall of the button cap 31, a driven rotating tooth 321 formed on the outer wall of the rotating column 32 and meshing with the active pressure tooth 311, a ratchet 23 formed on the inner wall of the through hole 21, and a driven block 322 formed on the outer side of the driven rotating tooth 321 and meshing with the ratchet 23. The driven rotating tooth 321 is controlled to rotate by the active pressure tooth 311, and the driven rotating tooth 321 is returned to its original position through the ratchet 23.

[0031] The ratchet 23 is formed with a plurality of notches 24 on the inner wall of the through hole 21 , and the active pressing tooth 311 is extended outward to form a protrusion 312 that can be inserted into the notches 24 , so that the button cap 31 is positioned and limited by the interaction between the protrusion 312 and the notches 24 .

[0032] In order to position the first spring 8 and the second spring 33, a convex column 61 connected to the first spring 8 is formed on the lower surface of the movable plate 6, and the first spring 8 is sleeved on the convex column 61. A groove 62 connected to the second spring 33 is formed on the upper surface of the movable plate 6, and the second spring 33 is placed in the groove 62. The convex column 61 and the groove 62 are integrally formed.

[0033] The working principle of the locking structure is as follows: by pressing the button cap 31, the active pressing tooth 311 of the button cap 31 moves downward, and when the active pressing tooth 311 presses against the driven rotating tooth 321 of the rotating column 32, the driven rotating tooth 321 meshing with the active pressing tooth 311 rotates, so that the driven block 322 of the driven rotating tooth 321 is fixed on the ratchet 23, thereby achieving a locking effect;

[0034] The button cap 31 is pressed again to make the active pressing tooth 311 of the button cap 31 move downward. When the active pressing tooth 311 presses against the driven rotating tooth 321 of the rotating column 32, the driven rotating tooth 321 is rotated again. The driven block 322 of the driven rotating tooth 321 is disengaged from the ratchet 23 and restored to the raised state under the action of the second spring 33.

Claims

1. An ultra-small high-current push button switch, comprising a switch base, an outer shell covering the switch base, a button structure arranged on the outer shell, a pin arranged on the switch base, a static contact electrically connected to the pin, a moving piece moving relative to the static contact, and a moving contact arranged on the moving piece and electrically connected to the static contact, characterized in that: A first spring is arranged between the movable sheet and the switch base, the bottom surface of the movable sheet is connected to the first spring in a resisting manner, and the top surface of the movable sheet is connected to the button structure in a resisting manner.

2. The ultra-small high-current push button switch according to claim 1, characterized in that: A channel groove is formed in the outer shell, and the channel groove is used to limit the movable plate to move only up and down.

3. The ultra-small high-current push button switch according to claim 1, characterized in that: A spring groove is formed on the switch base, and the first spring is arranged in the spring groove.

4. The ultra-small high-current push button switch according to claim 3, characterized in that: The bottom of the spring slot may be formed to extend outward relative to the bottom of the switch base.

5. The ultra-small high-current push button switch according to claim 1, characterized in that: The button structure comprises a button cap extending from a through hole formed on the outer shell and a locking structure arranged between the button cap and the moving plate, wherein the locking structure enables the moving plate to continuously maintain a depressed state.

6. The ultra-small high-current push button switch according to claim 5, characterized in that: The locking structure includes a rotating column inserted in the button cap, a second spring arranged between the rotating column and the moving plate, an active pressure tooth formed on the outer wall of the button cap, a driven rotating tooth formed on the outer wall of the rotating column and meshing with the active pressure tooth, a ratchet formed on the inner wall of the through hole, and a driven block formed on the outer side of the driven rotating tooth and meshing with the ratchet tooth. The driven rotating tooth is controlled to rotate by the active pressure tooth, and the driven rotating tooth returns to its original position through the ratchet tooth.

7. The ultra-small high-current push button switch according to claim 6, characterized in that: The ratchet is formed with a plurality of notches on the inner wall of the through hole, and the active pressing tooth is extended outwardly to form a protrusion which can be inserted into the notches.

8. The ultra-small high-current push button switch according to claim 6, characterized in that: A convex column connected to the first spring is formed on the lower surface of the movable plate, and a concave column connected to the second spring is formed on the upper surface of the movable plate, and the convex column and the concave column are integrally formed.

Images