CN205900397U - a tact switch - Google Patents

Abstract

The utility model discloses a switch, in particular to a light touch switch, which comprises a base, wherein the base is provided with a cavity and a groove arranged at the front end of the cavity, a clamping space and a limiting space are arranged in the cavity, a positioning shaft is arranged in the groove, the positioning shaft is connected with a tension spring, the tension spring is connected with a connecting sheet stress arranged between the clamping space and the limiting space, one end of the connecting sheet in the limiting space is in stress contact with a normally closed terminal through the tension spring, and the other end of the connecting sheet is clamped in the clamping space through the tension spring stress; the utility model has the advantages that: the first contact piece is formed by longitudinally bending the top ends of the normally open terminal and the normally closed terminal, the common terminal is arranged in an H shape, and the second contact piece is formed by bending two sides of the top end of the common terminal, so that the terminal is convenient to process; through the setting of connection piece and extension spring during the operation, can feed back different applied pressure to the user, produce the information of stage formula to the user through the applied pressure of difference to promote and feel and avoid the maloperation.

Description

a tact switch

technical field

The utility model relates to the field of switches, in particular to a light touch switch.

Background technique

Light touch switches have the advantages of small contact resistance, small operating force, and diversified specifications, and are widely used in electronic equipment and white goods, such as: audio-visual products, digital products, remote controls, communication products, household appliances, security Products, toys, computer products, fitness equipment, medical equipment, banknote detectors, laser pointer buttons, etc.

In the prior art, due to the complex design of the general tact switch terminals, difficulty in manufacturing, large space occupation, and difficulty in ensuring accuracy, and the key operation stroke is short, the use pressure is small, and the feedback of the operation is small, it is difficult for the operator to operate. perceived, may lead to misuse.

In the specification CN204927130 published by the Chinese patent application, a tactile switch is invented for the operation feedback is very small and difficult to detect. The invention has stepped tracks on both side walls of the button, and the free ends of each elastic foot The elastic tight contact and sliding cooperation with the corresponding stepped track forms a button press feel feedback structure, but this makes the terminal structure complex and difficult to manufacture. To sum up, how to provide a tact switch with simple structure and increased operational feeling is an urgent problem to be solved by those skilled in the art.

Utility model content

A tact switch, comprising a housing and a button arranged on the housing, the housing includes a base and a cover connected to the base, characterized in that a cavity is provided on the upper end of the base, and the two sides of the rear end in the cavity are respectively A terminal mounting seat is provided, the terminal mounting seat includes a high terminal seat and a low terminal seat lower than the high terminal seat, the high terminal seat is provided with a normally closed terminal penetrating the base, and the low terminal seat is provided with a normally open terminal penetrating the base, The tops of the normally closed terminal and the normally open terminal are respectively provided with first contact pieces facing each other, and the height between the top of the normally closed terminal and the top of the normally open terminal forms a limit space; the front end of the cavity is provided with a common terminal seat, and the common terminal The seat is provided with a common terminal that runs through the base, and the common terminal is set in an H shape. The upper ends of the common terminals are respectively extended with second contact pieces, and the second contact pieces form a clamping space with one side of the common terminal seat; The front end is provided with a groove, and a support plate is arranged in parallel in the groove to form a button insertion groove on both sides of the groove. The upper surface of the support plate is provided with a positioning shaft; The connecting piece between the space and the limiting space is connected by force. One end of the connecting piece in the limiting space is in force contact with the normally closed terminal through the tension spring, and the other end of the connecting piece is clamped in the clamping space by the tension spring. Inside; there are supporting parts on both sides of the front end of the button, and the supporting parts are clamped in the button insertion groove. The through hole is in stressed contact with the extension spring.

As a preferred solution, the connecting piece is set in a U shape, and the connecting piece includes a contact part, a connecting part and a fixing part, a first groove is arranged in the middle part of the front end of the contact part, and the first groove is set in a V shape, and the two sides of the contact part Contact points are respectively provided at the ends corresponding to the first contact piece, the two sides of the rear end of the contact part are respectively connected with the connection part to form a tension spring space, and the fixing part is arranged outside the tension spring space and connected with the rear ends of the two sides of the connection part respectively.

As a preferred solution, the support part is provided with chamfers, and a second groove is provided in the side arm of the support part, and the second groove is set in a V shape.

As a preferred solution, the driving part is provided with a third groove, and the third groove is arranged in a U shape.

As a preferred solution, the support plate is provided with a U-shaped groove matching the positioning shaft.

As a preferred solution, a V-shaped chamfer is provided in the middle of the positioning shaft.

As a preferred solution, the first contact piece is formed by longitudinally bending the top ends of the normally open terminal and the normally closed terminal.

As a preferred solution, the second contact piece is formed by bending both sides of the top of the common terminal, and the second contact piece is provided with chamfered corners.

As a preferred solution, a positioning plate is provided between the cavity and the groove, and a limiting groove is provided in the middle of the positioning plate.

The beneficial effects of the utility model are:

First, the first contact piece is formed by bending the top of the normally open terminal and the normally closed terminal longitudinally, the common terminal is set in an H shape, and the second contact piece is formed by bending the two sides of the top of the common terminal, so that the terminal structure is simple , easy to process;

Second, by connecting the positioning shaft with a tension spring, the tension spring is force-connected to the connecting piece arranged between the clamping space and the limiting space, and the end of the connecting piece in the limiting space is stressed through the tension spring and the normally closed terminal Contact, the other end of the connecting piece is clamped in the clamping space by the tension spring. During operation, the driving part presses down the tension spring, and the connecting piece connected with the tension spring is in the limited space and is in force contact with the normally closed terminal. Pressing down under force makes the tension spring stretch under force, and the resilience of the tension spring causes the connecting piece to drive the tension spring up, and the resilience feeds back the first segment of operation information through the driving part. The rebound force of the tension spring makes the connecting piece directly press down and collide with the first contact piece of the normally open terminal to make a "tick" sound to feed back the second operation information to the user, and feedback the staged information to the user through different applied pressures. To improve the feel and avoid misuse.

Description of drawings

Fig. 1 is the exploded schematic view of the utility model;

Fig. 2 is a cross-sectional view of the base assembly structure A-A in Fig. 1;

Fig. 3 is a base structure diagram in Fig. 2;

Fig. 4 is a structural diagram of the connecting piece of the present utility model;

Fig. 5 is a structural diagram of a common terminal of the present invention;

Fig. 6 is a structural diagram of the button of the present utility model.

In the figure: base 1, shell cover 2, cavity 3, normally open terminal 31, normally closed terminal 32, common terminal 33, first contact piece 34, second contact piece 35, high terminal seat 36, low terminal seat 37, Common terminal block 38, support plate 41, positioning shaft 42, connecting piece 5, contact part 51, connecting part 52, fixing part 53, contact point 54, tension spring 6, first groove 61, button 7, support part 71, The second groove 72 , the driving portion 73 , the third groove 74 , the driving through hole 75 , the positioning plate 8 , and the limiting groove 81 .

detailed description

The technical scheme of the present utility model is described below in conjunction with accompanying drawing and embodiment.

Referring to Figures 1 to 3:

A light touch switch, including a housing and a button 7 arranged on the housing, the housing includes a base 1 and a shell cover 2 connected to the base 1, characterized in that: the upper end of the base 1 is provided with a cavity 3, the cavity 3. Terminal mounting seats are respectively provided on both sides of the inner rear end. The terminal mounting seats include a high terminal seat 36 and a low terminal seat 37 lower than the high terminal seat 36. The high terminal seat 36 is provided with a normally closed terminal 32 that runs through the base 1. The lower terminal seat 37 is provided with a normally open terminal 31 that runs through the base 1, and the tops of the normally closed terminal 32 and the normally open terminal 31 are respectively provided with a first contact piece 34 opposite to each other. The distance between the top of the normally closed terminal and the top of the normally open terminal is The height of the cavity 3 forms a limit space; the front end of the cavity 3 is provided with a common terminal seat 38, and the common terminal seat 38 is provided with a common terminal 33 that runs through the base 1. The common terminal 33 is set in an H shape, and the upper ends of the common terminal 33 extend respectively. A second contact piece 35 is provided, and the second contact piece 35 and one side of the common terminal block 38 form a clamping space; the front end of the cavity 3 is provided with a groove, and a support plate 41 is arranged in parallel in the groove to make the two sides of the groove A button insertion groove is formed, and the upper surface of the support plate 41 is provided with a positioning shaft 42; the positioning shaft 42 is connected with a tension spring 6, and the tension spring 6 is force-connected with the connecting piece 5 arranged between the clamping space and the limiting space , one end of the connecting piece 5 in the limit space is in force contact with the normally closed terminal 32 through the tension spring 6, and the other end of the connecting piece 5 is clamped in the clamping space through the tension spring 6; the two sides of the front end of the button 7 A supporting part 71 is provided, and the supporting part 71 is clamped in the button insertion groove. The middle part of the button 7 is provided with a driving part 73, and the center of the case cover 2 is provided with a driving through hole 75 matching with the driving part 73, and the driving part 73 penetrates The driving through hole 75 is in force contact with the tension spring 6 .

Referring to Fig. 4, in order to prevent the connecting piece 5 from colliding with the connecting piece 5 in the process of pressing down the connecting piece 5 and the extension spring 6, the connecting piece 5 is arranged in a U shape, and the connecting piece 5 includes a contact portion 51, a connecting portion 52 and the fixing part 53;

In order to ensure the stability of the connection between the connecting piece 5 and the extension spring 6, a first groove 61 is provided in the middle of the front end of the contact part 51, and the first groove 61 is set in a V shape;

In order to reduce the resistance when the fixed part 53 is in contact with the second contact piece 35, contact points 54 are respectively provided at the two ends of the contact part 51 corresponding to the first contact piece 34, and the two sides of the rear end of the contact part 51 are connected to the connecting part 52 respectively. A tension spring space is formed, and the fixing part 53 is disposed outside the tension spring space and connected to the rear ends of both sides of the connection part 52 respectively.

6, in order to ensure the stability of the connection between the support portion 71 and the positioning shaft 42, the support portion 71 is provided with chamfers, and the side arm of the support portion 71 is also provided with a second groove 72, the second groove 72 set to V-shape;

In order to ensure the stability of the connection between the driving part 73 and the extension spring 6 , the driving part 73 is provided with a third groove 74 , and the third groove 74 is arranged in a U shape.

Referring to FIG. 3 , in order to ensure the stability of the positioning shaft 42 on the support plate 41 , the support plate 41 is provided with a U-shaped groove matching the positioning shaft 42 .

Referring to Figure 1, in order to ensure the stability of the connection between the connecting piece 5 and the extension spring 6, a V-shaped chamfer is provided in the middle of the positioning shaft 42;

In order to ensure that the first contact piece 34 can be integrally formed, the first contact piece 34 is formed by bending the top ends of the normally open terminal 31 and the normally closed terminal 32 longitudinally;

5, in order to ensure that the second contact piece 35 can be integrally formed, and the second contact piece 35 can play the role of positioning the connecting piece 5, the second contact piece 35 is formed by bending the two sides of the top of the common terminal 33, The second contact piece 35 is provided with a chamfer.

Referring to Fig. 1 and Fig. 3, in order to ensure the stability when the extension spring 6 is pressed down, a positioning plate 8 is provided between the cavity 3 and the groove, and a limiting groove 81 is provided in the middle of the positioning plate 8.

The utility model process is as follows:

The button 7 is pressed down, the driving part 73 of the button 7 is in force contact with the tension spring 6, the driving part 73 is pressing down the tension spring 6, and the connecting piece connected with the tension spring 6 is in the limited space and is in force contact with the normally closed terminal 32 5 is pressed down under force, so that the extension spring 6 is under force and stretched. Before the downward movement of the connection piece 5 reaches the stop point, the force of pressing the button 7 needs to be continuously increased due to the stretching of the extension spring 6. Large, this distance acts as a pressure buffer for the user and becomes the first feedback point of operation information;

After the tension spring 6 is pressed down to the dead point, because of the rebound of the tension spring 6, the connecting piece 5 is quickly pressed down in the movable space and collides with the first contact piece 34 of the normally open terminal 31 to make a "tick" sound. The sound of the collision feeds back the second piece of operation information to the user and becomes the feedback point of the second piece of operation information;

Release the button 7, the tension spring 6 makes the connecting piece 5 contact the first contact piece 34 of the normally closed terminal 32 in the movable space under the action of the resilience force, and completes the power-off. Part 73 supports button 7 to reset.

The above embodiments only show and describe the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model.

Claims (9)

1. a kind of touch-switch, including housing and be arranged on button (7) on housing, described housing include base (1) and The cap (2) that is connected with base (1) it is characterised in that: described base (1) upper surface is provided with cavity (3),

Described cavity (3) interior rear end both sides are respectively arranged with terminal mounting seat, and described terminal mounting seat includes high-end Stroma (36) And the low side Stroma (37) less than high-end Stroma (36), it is provided through the normally closed of base (1) in described high-end Stroma (36) Terminal (32), is provided through the normally opened terminal (31) of base (1) in described low side Stroma (37), described normally closed terminal (32) with And the top of normally opened terminal (31) has been oppositely arranged the first contact (34) respectively, the top of described normally closed terminal (32) is apart from normally opened Height between the top of terminal (31) forms spacing space；

Described cavity (3) Inner Front End is provided with common terminal base (38), is provided through base in described common terminal base (38) (1) common terminal (33), described common terminal (33) is set to H-shaped, and the upper end of this common terminal (33) each extends over setting Have the second wafer (35), described the second wafer (35) together go side Stroma (38) side formed clamping space；

The front end setting of described cavity (3) is fluted, and being arranged with gripper shoe (41) in described groove in parallel makes groove both sides be formed Button inserting groove, the upper surface of this gripper shoe (41) is provided with locating shaft (42)；

Described locating shaft (42) is connected with extension spring (6), described extension spring (6) and the company being arranged between clamping space and spacing space Contact pin (5) stress connects, and extension spring (6) and normally closed terminal (32) stress are passed through in one end that described connection sheet (5) is in spacing space Contact, the other end of this connection sheet (5) is connected in clamping space by extension spring (6) stress；

The front end both sides of described button (7) are provided with supporting part (71), and described supporting part (71) is connected in button inserting groove, should It is provided with drive division (73), described cap (2) center offers the driving through hole coordinating with drive division (73) in the middle part of button (7) (75), described drive division (73) runs through driving through hole (75) and extension spring (6) forced contact.

2. a kind of touch-switch according to claim 1 it is characterised in that: described connection sheet (5) is set to u-shaped, and this is even Contact pin (5) includes contact site (51), connecting portion (52) and fixed part (53), and described contact site (51) front center is provided with One groove (61), described first groove (61) is set to V-shaped, and corresponding first contact (34) place in two ends of this contact site (51) is respectively It is provided with contact point (54), contact site (51) rear end both sides are connected formation extension spring space, described fixed part respectively with connecting portion (52) (53) outside being arranged at extension spring space is connected with connecting portion (52) both sides surface rear end respectively.

3. a kind of touch-switch according to claim 1 it is characterised in that: described supporting part (71) is provided with chamfering, should It is additionally provided with the second groove (72), described second groove (72) is set to V-shaped in the side arm of supporting part (71).

4. a kind of touch-switch according to claim 1 it is characterised in that: described drive division (73) is provided with the 3rd groove (74), described 3rd groove (74) is set to u-shaped.

5. a kind of touch-switch according to claim 1 it is characterised in that: described gripper shoe (41) is provided with and locating shaft (42) the u-shaped groove matching.

6. a kind of touch-switch according to claim 1 it is characterised in that: be provided with V-shaped in the middle part of described locating shaft (42) Chamfering.

7. a kind of touch-switch according to claim 1 it is characterised in that: described first contact (34) is by normally opened terminal (31) and normally closed terminal (32) top longitudinal direction bending formed.

8. a kind of touch-switch according to claim 1 it is characterised in that: described the second wafer (35) is by common terminal (33) the both sides bending on top is formed, and this second wafer (35) is provided with chamfering.

9. a kind of touch-switch according to claim 1 it is characterised in that: it is fixed that described cavity (3) is provided with and groove between Position plate (8), is provided with stopper slot (81) in the middle part of described location-plate (8).