Touch spring and touch electronic product

Abstract

The utility model discloses a touch spring and a touch control electronic product, the touch spring comprises a spring body, a touch pressing portion and two pins, the spring body is used for abutting against a circuit board, and the spring body is provided with a guide hole vertically arranged in a penetrating mode; the touch pressing part is used for abutting against a key board in the shell, the touch pressing part is located in the guide hole, the touch pressing part is arranged close to the top end of the spring body, and the touch pressing part is connected with the spring body; the pins are arranged close to the bottom end of the spring body, one ends of the pins are connected with the outer side wall of the spring body, and the other ends of the pins are used for being installed on a circuit board. According to the touch spring, the contact area between the touch spring and the key board is increased through the touch pressing part, when a hand touches the key board, the sensitivity of the touch spring can be improved through the touch pressing part, a needed closed loop can be formed, capacitance in the circuit board can be changed, a control circuit in the circuit board can receive a feedback signal so as to achieve a switching effect, and the touch spring can be switched on and off. Therefore, the key board does not need to be touched again, and the use effect of the touch electronic product is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to spring structure technical field especially relates to a touch spring and touch electronic product. BACKGROUND

[0002] Touch spring refers to the special spring in the key of electronic product, and touch spring is also called touch sensing spring, key spring and contact spring. In the design of electronic product, touch spring and circuit board are located in the shell, the top of touch spring abuts against the glass key plate on the shell, the bottom of touch spring is electrically connected with circuit board, when the user touches the glass key plate, the hand contacts touch spring through the glass key plate, circuit board, touch spring, hand and ground form a closed circuit, once the hand is removed, the circuit is disconnected, the capacitance in circuit board changes in this process, and then feedback to the control circuit in circuit board to play the role of switch.

[0003] However, the existing touch spring generally includes a straight cylindrical spring body and two needle pins protruding from the bottom of the spring body, the needle pins are electrically connected with the circuit board, the contact area between the straight cylindrical spring body and the glass key plate is small, which leads to low sensitivity of the touch spring, when the user lightly touches the glass key plate, the circuit often cannot be closed, the glass key plate needs to be touched again, which affects the use effect of the electronic product. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a touch spring and touch electronic product to solve the technical problem that the existing touch spring generally includes a straight cylindrical spring body and two needle pins protruding from the bottom of the spring body, the needle pins are electrically connected with the circuit board, the contact area between the straight cylindrical spring body and the glass key plate is small, which leads to low sensitivity of the touch spring, when the user lightly touches the glass key plate, the circuit often cannot be closed, the glass key plate needs to be touched again, which affects the use effect of the electronic product.

[0005] The utility model is realized as follows:

[0006] The utility model provides a touch spring, which comprises:

[0007] A spring body is used for abutting against a circuit board, and the spring body has a guide hole vertically and throughly arranged;

[0008] A touch pressure part is used for abutting against a key plate in a shell, and the touch pressure part is located in the guide hole, is arranged close to the top end of the spring body, and is connected with the spring body;

[0009] Two needle pins are arranged close to the bottom end of the spring body, one end of the needle pin is connected with the outer side wall of the spring body, and the other end is used for being mounted on the circuit board.

[0010] Further, the pressure-pressing part is mosquito coil-shaped formed by spiral bending of a wire.

[0011] Further, the number of turns in the pressure-pressing part is 3-4 turns.

[0012] Further, the number of turns in the pressure-pressing part is 3.5 turns.

[0013] Further, the spring body is a cylinder formed by spiral bending of a wire, and the number of turns at the upper end of the spring body is greater than that at the lower end of the spring body.

[0014] Further, the inner diameter of the guide hole gradually increases from the end close to the needle foot to the end close to the pressure-pressing part.

[0015] Further, the two needle feet are a first soldering foot and a second soldering foot, the first soldering foot comprises a first branch, a first L-shaped rod and a second L-shaped rod, the first L-shaped rod and the second L-shaped rod are arranged side by side, one end of the first L-shaped rod, one end of the second L-shaped rod and the second soldering foot are connected with the outer side wall of the spring body, the other end of the first L-shaped rod and the other end of the second L-shaped rod are connected with two ends of the first branch respectively.

[0016] Further, the second soldering foot comprises a second branch and a third branch, one end of the second branch is connected with the outer side wall of the spring body, and the other end is connected with the third branch perpendicularly.

[0017] Further, the touch spring is formed by bending a wire for multiple times.

[0018] The utility model further provides a touch electronic product, including shell, circuit board and the touch spring as above-mentioned, the circuit board and the touch spring all are located in the shell, one end of the touch spring is connected with the circuit board electricity, and the other end is abuts on the key board of the shell.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] The utility model discloses a spring body of touch spring has the guide hole of vertical through -going setting, has increased touch pressure part in the guide hole, and touch pressure part is located in the guide hole, and touch pressure part sets up close to the top of spring body, and touch pressure part is connected with spring body, and touch pressure part is used for abutting key board, and the outside wall of spring body is equipped with two needle feet all for with circuit board electricity is connected, and touch spring increases the contact area between key board through touch pressure part, when the hand touch key board, touch pressure part will improve the sensitivity of touch spring, will form the required closed loop, and the capacitance in circuit board will have the change, and the control circuit in circuit board will receive feedback signal to form switch function, thereby need not to touch key board again, improve the use effect of touch electronic product. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 Structure diagram of touch spring provided by the utility model embodiment Figure 1 ;

[0022] Figure 2 Structure diagram of touch spring provided by the utility model embodiment Figure 2 ;

[0023] Figure 3 Structure diagram of touch spring provided by the utility model embodiment Figure 3 ;

[0024] Figure 4 Structure diagram of touch spring provided by the utility model embodiment after installing circuit board

[0025] Figure 5 Explotion diagram of Figure 4 ;

[0026] Figure 6 Sectional view of Figure 4 .

[0027] In the drawing:

[0028] 10, touch spring;11, spring body;111, guide hole;12, touch pressure part;13, needle foot;14, first soldering leg;141, first supporting rod;142, first L-shaped rod;1421, first rod body;1422, second rod body;143, second L-shaped rod;1431, third rod body;1432, fourth rod body;15, second soldering leg;151, second supporting rod;152, third supporting rod;20, circuit board;21, first clamping hole;22, second clamping hole. DETAILED DESCRIPTION

[0029] Below, combining the drawing and specific implementation, the utility model will be further described, need explaining, under the premise of not conflicting, the following description between each embodiment of the following description or between each technical feature can form the new embodiment arbitrarily.

[0030] Please see Figures 1 to 6 As shown, this utility model embodiment discloses a touch spring 10, which is mainly used in touch-sensitive electronic products. The touch spring 10 includes a spring body 11, a pressing part 12, and two pins 13. The spring body 11 is a hollow cylindrical shape and is elastic, so it can be compressed. The bottom of the spring body 11 is used to abut against the circuit board 20, and the top of the spring body 11 is used to abut against the key plate of the outer casing. The spring body 11 has a vertically penetrating guide hole 111. The pressing part 12 is used to abut against the key plate in the outer casing. The pressing part 12 is located inside the guide hole 111 and is located near the top of the spring body 11. The pressing part 12 is connected to the spring body 11. The top of the pressure part 12 and the top of the spring body 11 are on the same plane. The pin 13 is set near the bottom of the spring body 11. Two pins 13 are set opposite to each other at both ends of the spring body 11. One end of the pin 13 is connected to the outer wall of the spring body 11, and the other end is used to mount on the circuit board 20. The touch spring 10 is electrically connected to the circuit board 20. The touch spring 10 increases the contact area with the key plate through the pressure part 12. When a person touches the key plate, the pressure part 12 will increase the sensitivity of the touch spring 10, which will form the required closed circuit. The capacitance in the circuit board 20 will change, and the control circuit in the circuit board 20 will receive a feedback signal to form a switching action.

[0031] The pressure part 12 is formed by spiral bending of the wire into a mosquito coil shape, which can improve the elasticity of the pressure part 12. The structure is simple and the production cost is low. The pressure part 12 is disc-shaped as a whole. The end of the center of the pressure part 12 coincides with the central axis of the guide hole 111, which strengthens the force balance of the touch spring 10 on the central axis and avoids the phenomenon of bending under pressure.

[0032] In some embodiments, the number of coils in the touch-pressing part 12 is 3 to 4, preferably 3.5, which cleverly increases the contact area between the touch spring 10 and the keypad, effectively improving the touch pressure and thus enhancing the touch sensitivity of the touch spring 10.

[0033] In this embodiment, the spring body 11 is a cylindrical shape formed by spiral bending of a wire, and the coil density at the upper end of the spring body 11 is greater than the coil density at the lower end of the spring body 11, so as to increase the elasticity and strength of the touch spring 10 itself and prevent the spring body 11 from bending.

[0034] The inner diameter of the guide hole 111 gradually increases from the end near the pin 13 toward the end near the touch part 12, so as to increase the contact area between the spring body 11 and the key plate and further improve the sensitivity of the touch spring 10.

[0035] In the embodiment, the two pins 13 are respectively the first pin 14 and the second pin 15, the first pin 14 comprises a first supporting rod 141, a first L-shaped rod 142 and a second L-shaped rod 143, the first L-shaped rod 142 and the second L-shaped rod 143 are arranged side by side, one end of the first L-shaped rod 142, one end of the second L-shaped rod 143 and the second pin 15 are connected with the outer side wall of the spring body 11, the other end of the first L-shaped rod 142 and the other end of the second L-shaped rod 143 are respectively connected with two ends of the first supporting rod 141, the first pin 14 is formed by bending a wire, the first L-shaped rod 142 and the second L-shaped rod 143 are used for being installed in the first clamping hole 21 of the circuit board 20, and the second pin 15 is used for being installed in the second clamping hole 22 of the circuit board 20.

[0036] In some embodiments, the first L-shaped rod 142 comprises a first rod body 1421 and a second rod body 1422 connected with the first rod body 1421 perpendicularly, the second L-shaped rod 143 comprises a third rod body 1431 and a fourth rod body 1432 connected with the third rod body 1431 perpendicularly, the first rod body 1421 and the third rod body 1431 are arranged in parallel, the second rod body 1422 and the fourth rod body 1432 are arranged in parallel, the first rod body 1421 and the third rod body 1431 are connected with the spring body 11, the first rod body 1421 and the third rod body 1431 are used for abutting against the top wall of the circuit board 20 to improve the supporting degree, two ends of the first supporting rod 141 are respectively connected with the second rod body 1422 and the fourth rod body 1432, and the second rod body 1422 and the fourth rod body 1432 can be installed in the first clamping hole 21 to facilitate later disassembly and assembly.

[0037] The second pin 15 comprises a second supporting rod 151 and a third supporting rod 152, one end of the second supporting rod 151 is connected with the outer side wall of the spring body 11, the other end is connected with the third supporting rod 152 perpendicularly, the second supporting rod 151 is used for abutting against the top wall of the circuit board 20 to improve the supporting degree, and the third supporting rod 152 is installed in the second clamping hole 22 of the circuit board 20 to facilitate later disassembly and assembly.

[0038] The touch spring 10 is formed by bending a wire for multiple times, the structure of the touch spring 10 adopts an integrated design, the production and processing cost of the touch spring 10 is reduced, the touch spring 10 is convenient for wide promotion, and the wire can be stainless steel material with a conductive function.

[0039] The utility model discloses still disclose a kind of touch electronic products, including shell, circuit board 20 and the touch spring 10 as described above, circuit board 20 and touch spring 10 are located in shell, circuit board 20 is equipped with first clamping hole 21 and second clamping hole 22, wherein the inner diameter of first clamping hole 21 is greater than the inner diameter of second clamping hole 22, the first solder leg 14 of touch spring 10 is welded in first clamping hole 21 by soldering tin, second solder leg 15 is welded in second clamping hole 22 by soldering tin, one end of touch spring 10 is electrically connected with circuit board 20, and the other end is abutted on the key plate of shell, convenient to disassemble and later maintenance, the touch electronic product can be applied in the field of intelligent lock, to solve the sensitive monitoring outside door and door closing of intelligent lock by light touch.

[0040] The working principle of the touch electronic product is as follows:

[0041] During assembly, the first solder leg 14 of the touch spring 10 can be inserted into the first clamping hole 21 of the soldering tin area, and the second solder leg 15 can be inserted into the second clamping hole 22 of the soldering tin area. The first solder leg 14 can be welded in the first clamping hole 21 by soldering tin, and the second solder leg 15 can be welded in the second clamping hole 22 by soldering tin. Then, the circuit board 20 with the touch spring 10 installed thereon can be installed in the shell of the touch electronic product. One end of the touch spring 10 is electrically connected with the circuit board 20, and the other end is abutted on the key plate of the shell. In this way, the assembly is completed.

[0042] The touch pressure part 12 can increase the contact area between the touch spring 10 and the key plate, improve the sensitivity of the touch spring 10, and form a closed circuit when a hand touches the key plate after being powered on. Once the hand is removed, the circuit is disconnected. During this process, the capacitance in the circuit board 20 changes, and the feedback signal is fed back to the control circuit in the circuit board 20, so that the control circuit receives the feedback signal to form a switching effect.

[0043] In summary, the spring body 11 of the touch spring 10 has a vertical through-hole 111, and the touch pressure part 12 is arranged in the vertical through-hole 111. The touch pressure part 12 is arranged near the top end of the spring body 11 and is connected with the spring body 11. The touch pressure part 12 is used to abut against the key plate. Two needle pins 13 on the outer side wall of the spring body 11 are used to electrically connect with the circuit board 20. The touch spring 10 increases the contact area between the touch spring 10 and the key plate through the touch pressure part 12. When a hand touches the key plate, the touch pressure part 12 can improve the sensitivity of the touch spring 10 and form a required closed circuit. The capacitance in the circuit board 20 changes, and the control circuit in the circuit board 20 receives the feedback signal to form a switching effect. Therefore, it is not necessary to touch the key plate again, and the use effect of the touch electronic product is improved.

[0044] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and replacements made by those skilled in the art on the basis of the present application shall fall within the scope of protection of the present application.

Claims

1. A touch spring characterized by comprising: The spring body is used for abutting against a circuit board, and has a vertical guide hole; The touch pressure part is used for abutting against a keyboard in a shell, and is located in the guide hole, and is arranged close to the top end of the spring body, and is connected with the spring body; Two needle pins are arranged close to the bottom end of the spring body, and one end of the needle pin is connected with the outer side wall of the spring body, and the other end is used for being mounted on the circuit board; The touch pressure part is formed by spiral bending of a wire, and the top of the touch pressure part and the top of the spring body are on the same plane, and the end of the center of the touch pressure part coincides with the central axis of the guide hole. The number of turns in the touch pressure part is 3 to 4 turns.

2. The touch spring according to claim 1, wherein The number of turns in the touch pressure part is 3.5 turns.

3. The touch spring according to claim 1, wherein The spring body is formed by spiral bending of a wire, and the number density of turns at the top end of the spring body is greater than that at the bottom end of the spring body.

4. The touch spring according to claim 1, wherein The inner diameter of the guide hole gradually increases from the end close to the needle pin to the end close to the touch pressure part.

5. The touch spring of claim 1, wherein, The two needle pins are a first solder pin and a second solder pin, the first solder pin comprises a first branch rod, a first L-shaped rod and a second L-shaped rod, the first L-shaped rod and the second L-shaped rod are arranged side by side, one end of the first L-shaped rod, one end of the second L-shaped rod and the second solder pin are connected with the outer side wall of the spring body, and the other end of the first L-shaped rod and the other end of the second L-shaped rod are respectively connected with two ends of the first branch rod.

6. The touch spring of claim 1, wherein, The second solder pin comprises a second branch rod and a third branch rod, one end of the second branch rod is connected with the outer side wall of the spring body, and the other end is connected with the third branch rod perpendicularly.

7. The touch spring according to claim 6, wherein The touch spring is formed by bending a wire multiple times.

8. The touch spring of claim 1, wherein, The touch spring comprises a shell, a circuit board and the touch spring according to any one of claims 1-8, the circuit board and the touch spring are located in the shell, one end of the touch spring is electrically connected with the circuit board, and the other end abuts against the keyboard of the shell.

9. A touch electronic product, characterized in that, ​

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