An electric pen facilitating battery replacement

Abstract

The present invention relates to an electric pen that is convenient for replacing the battery, including a front cover, an upper cover, a lower cover, and a rear cover. A circuit board, a first contact, and a probe are provided inside the lower cover board, and a third contact, a second contact, an IC controller, a support frame, a display screen, and a pressing switch are provided on the circuit board. In the present invention, the third contact, the second contact, the IC controller, and the display screen are all electrically connected to the circuit board. The IC controller is used to control the operation of the circuit board, enabling the electric pen to automatically shut down when there is no induced electric field or after 3 minutes of inactivity. Moreover, the electric pen can continue to be used without powering on, that is, the probe can be used to contact a live object, and the voltage on the live object will be displayed on the display screen to measure the contact voltage. Therefore, during the use of the electric pen, it is more convenient and power-saving, reducing the usage cost.

Description

Technical Field

[0001] The invention relates to the technical field of electric tools, and in particular to an electric pen with convenient battery replacement. Background Art

[0002] We often use an electric tester in daily maintenance to test whether a circuit or device is energized. There are two types of electric testers: one is a traditional electric tester with a neon tube, and the other is an electronic electric tester. The electronic electric tester has an LED display screen, which can read the test voltage value intuitively. Since the electronic electric tester can read the voltage value intuitively, it is more and more widely used. For the convenience of use, people are studying it more and more. For example, a Chinese patent (publication number: CN205080190U) discloses a digital display electric tester, including an electric tester body composed of a front cover and a rear cover that are buckled together. body; a probe is provided at the front end of the electric pen body; it is characterized by: it also includes an insulating sheet; the probe is connected to the circuit board placed inside the electric pen body; a positive contact sheet and a negative contact sheet are provided at the rear end of the circuit board, and the positive contact sheet and the negative contact sheet are provided with two batteries; the front cover is provided with a lighting lamp, a lighting switch for controlling the lighting lamp, a display screen for displaying the measurement results, and an indicator light for displaying the working status of the electric test pen; a slot is provided at a position opposite to the middle of the two batteries on the rear cover, the insulating sheet is placed in the slot and extends into the middle of the two batteries, so that the positive contact sheet and the negative contact sheet are connected to each other. The contact piece is in a power-off state. The tester uses an insulating sheet inserted between the two batteries for insulation, ensuring that the tester has sufficient power when not in use, solving the problem of not being able to use the tester normally due to battery power loss. However, when the tester is not in use or is to be sold, the insulating sheet needs to be inserted between the batteries, so the cost of producing the insulating sheet needs to be increased. Although the power loss is reduced, the cost of manufacturing the insulating sheet is increased, so it cannot play a role in cost saving. In addition, the circuit board of the tester is electrically connected to the battery through the positive contact piece and the negative contact piece, and the contact piece has only one contact point. If there is a collision or vibration during use, the contact between the contact piece and the battery will easily loosen, which will make the test pen unable to be used normally, with low reliability and even cause safety problems. In addition, the battery is located in the main body of the test pen with a front cover and a rear cover interlocked with each other. If you want to replace the battery, you need to open the front cover or the rear cover. At this time, the circuit board and other components will be all exposed. Therefore, the replacement process requires very careful operation. Replacing the battery is not convenient, which brings inconvenience to the installation and disassembly of the test pen. In addition, all the components in the main body of the test pen are exposed, which can easily cause damage to the test pen. Summary of the invention

[0003] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide an electric pen with easy battery replacement, which is cost-saving, highly safe, easy to replace batteries, easy to use and has a long service life.

[0004] The technical solution adopted by the present invention to solve the above technical problems is as follows: An electric pen that is convenient for replacing the battery, including a front cover, an upper cover, a lower cover, and a rear cover. The rear cover is snap-connected to the lower cover, the lower cover is snap-connected to the upper cover, the upper cover is sleeved and connected to the front cover, and the front cover is located below the lower cover. A circuit board, a first contact, and a probe are arranged inside the lower cover plate. The probe is located below the first contact, and the first contact is located below the circuit board. The circuit board is electrically connected to both the first contact and the probe, and a third contact, a second contact, an IC controller, a support frame, a display screen, and a push switch are arranged on the circuit board. The push switch is located below the display screen, the display screen is snap-connected to the support frame, the support frame is fixedly connected to the IC controller, the IC controller is located below the second contact, the second contact is located below the third contact, and the third contact, the second contact, the IC controller, and the display screen are all electrically connected to the circuit board. Since the third contact, the second contact, the IC controller, and the display screen are all electrically connected to the circuit board, and the IC controller is used to control the operation of the circuit board, the electric pen can automatically shut down when there is no induced electric field or after stopping use for 3 minutes, and the electric pen can also continue to be used without powering on, that is, the probe can be used to contact a live object, and the voltage on the live object will be displayed on the display screen to achieve the measurement of the contact voltage. Therefore, during the use of the electric pen, it is more convenient and power-saving, reducing the use cost, and its advantage is cost savings.

[0005] Preferably, a battery adhesive and a battery are also arranged on the circuit board. The battery is electrically connected to the circuit board through the battery adhesive. Since the battery is electrically connected to the circuit board through the battery adhesive, the battery adhesive isolates the battery from the circuit board, making it more convenient for the user to replace the battery, and the connection between the battery and the circuit board is more reliable and safe, and its advantage is high safety.

[0006] Preferably, a battery slot and a rocker are arranged on the lower cover. The rocker is located between the battery slots. Both the battery slot and the rocker are fixedly connected to the lower cover. Since both the battery slot and the rocker are fixedly connected to the lower cover, when it is necessary to disassemble the rear cover to replace the battery, the rocker is used to pry up the rear cover, facilitating the user to remove the rear cover and then replace the battery, and its advantage is convenient battery replacement.

[0007] Preferably, the upper cover is provided with a first through hole, a square hole, a second through hole and a third through hole. The third through hole is located above the second through hole, the second through hole is located above the square hole, and the square hole is located above the first through hole. Since the third through hole is located above the second through hole, the second through hole is located above the square hole, and the square hole is located above the first through hole, the first through hole facilitates the exposure of the push switch, making it convenient for the user to use the push switch. The second through hole facilitates the exposure of the second contact, making it convenient for the user to touch the second contact when using the electric pen. The third through hole facilitates the exposure of the third contact, making it convenient for the user to touch the third contact when using the electric pen. Its advantage is convenient use.

[0008] Preferably, the upper cover is further provided with a first rubber sleeve, and the first rubber sleeve is sleeved on the upper cover. Since the first rubber sleeve is sleeved on the upper cover, the first rubber sleeve is used to protect the upper cover from external collisions, extending the service life of the electric pen. Its advantage is a long service life.

[0009] Preferably, the lower cover is further provided with a second rubber sleeve, and the second rubber sleeve is sleeved on the lower cover. Since the second rubber sleeve is sleeved on the lower cover, the second rubber sleeve is used to protect the lower cover from external collisions, extending the service life of the electric pen. Its advantage is a long service life.

[0010] Preferably, the rear cover is provided with a pen clip and a fourth through hole. The fourth through hole is located below the pen clip, and the pen clip is fixedly connected to the rear cover. Since the pen clip is fixedly connected to the rear cover, when the electric pen is not needed or not in use temporarily, the pen clip is used to clip the electric pen to an external object, facilitating the next use. Its advantage is convenient use.

[0011] Preferably, the pen clip is provided with a boss, and the boss is fixedly connected to the pen clip. Since the boss is fixedly connected to the pen clip, when the rear cover needs to be opened to replace the battery, the pen clip is pressed downward. At this time, the boss presses the rocker through the fourth through hole, and the rocker pries up the rear cover, facilitating the user to open the rear cover to replace the battery. Its advantage is convenient battery replacement.

[0012] Preferably, the front cover is provided with a lamp shade, and the lamp shade is fixedly connected to the front cover. Since the lamp shade is fixedly connected to the front cover, the lamp shade is used to protect the illuminating lamp from external collisions and damage, extending the service life of the illuminating lamp. Its advantage is a long service life.

[0013] Preferably, a lighting lamp is arranged inside the lamp shade. The lighting lamp is sleeved inside the lamp shade, and the lighting lamp is electrically connected to the first contact. Since the lighting lamp is electrically connected to the first contact, when the external light is dim, pressing the pressing switch will cause the pressing switch to touch the first contact, and the first contact will turn on the lighting lamp, and the lighting lamp emits light for illumination, which is convenient for users to use when the light is dim. Its advantage is convenient use.

[0014] Compared with the prior art, the advantages of the present invention are as follows: in the present invention, the third contact, the second contact, the IC controller and the display screen are all electrically connected to the circuit board. The IC controller is used to control the operation of the circuit board, enabling the electric pen to automatically shut down when there is no induced electric field or after it has been unused for 3 minutes. Moreover, the electric pen can continue to be used without being powered on, that is, the probe can be used to touch a live object, and the voltage on the live object will be displayed on the display screen to measure the contact voltage. Therefore, during the use of the electric pen, it is more convenient and power-saving, reducing the usage cost. Its advantage is cost savings. And the battery is electrically connected to the circuit board through a battery adhesive. The battery adhesive isolates the battery from the circuit board, making it more convenient for the user to replace the battery, and the connection between the battery and the circuit board is more reliable and safe. Its advantage is high safety. Also, the battery slot and the rocker are both fixedly connected to the lower cover. When it is necessary to remove the rear cover to replace the battery, the rocker is used to pry up the rear cover, facilitating the user to remove the rear cover and then replace the battery. Its advantage is convenient battery replacement. And the third through hole is located above the second through hole, the second through hole is located above the square hole, and the square hole is located above the first through hole. The first through hole facilitates the exposure of the push switch, making it convenient for the user to use the push switch. The second through hole facilitates the exposure of the second contact, making it convenient for the user to touch the second contact when using the electric pen. The third through hole facilitates the exposure of the third contact, making it convenient for the user to touch the third contact when using the electric pen. Its advantage is convenient use. And the first rubber sleeve is sleeved on the upper cover. The first rubber sleeve is used to protect the upper cover, preventing the upper cover from being collided by the outside world and extending the service life of the electric pen. Its advantage is a long service life. Also, the second rubber sleeve is sleeved on the lower cover. The second rubber sleeve is used to protect the lower cover, preventing the lower cover from being collided by the outside world and extending the service life of the electric pen. Its advantage is a long service life. And the pen clip is fixedly connected to the rear cover. When the electric pen is not needed or not used temporarily, the pen clip is used to clamp the electric pen to an external object, facilitating its next use. Its advantage is convenient use. And the boss is fixedly connected to the pen clip. When it is necessary to open the rear cover to replace the battery, press the pen clip downward. At this time, the boss presses the rocker through the fourth through hole, and the rocker pries up the rear cover, facilitating the user to open the rear cover to replace the battery. Its advantage is convenient battery replacement. And the lampshade is fixedly connected to the front cover. The lampshade is used to protect the lighting lamp, preventing the lighting lamp from being damaged due to external collision and extending the service life of the lighting lamp. Its advantage is a long service life. And the lighting lamp is electrically connected to the first contact. When the external light is dim, press the push switch. The push switch touches the first contact, and the first contact turns on the lighting lamp, and the lighting lamp emits light for illumination, facilitating the user to use it in dim light. Its advantage is convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a front structural schematic diagram of the present invention;

[0016] Figure 2 Schematic diagram of the back structure of the present invention;

[0017] Figure 3 Schematic diagram of the explosion structure of the present invention.

[0018] Wherein: 1 - front cover; 2 - upper cover; 3 - lower cover; 4 - rear cover; 5 - circuit board; 6 - first contact; 7 - probe; 8 - third contact; 9 - second contact; 10 - IC controller; 11 - support frame; 12 - display screen; 13 - push switch; 14 - battery glue; 15 - battery; 16 - battery slot; 17 - rocker; 18 - first through hole; 19 - square hole; 20 - second through hole; 21 - third through hole; 22 - first rubber sleeve; 23 - second rubber sleeve; 24 - pen clip; 25 - fourth through hole; 26 - boss; 27 - lamp shade; 28 - illuminating lamp. Detailed implementation manners

[0019] The following further details the specific implementation manners of the present invention in conjunction with the accompanying drawings, so that the technical solutions of the present invention are easier to understand and master.

[0020] Such as Figures 1-3As shown in the figure, a voltage tester that is convenient for replacing the battery includes a front cover 1, an upper cover 2, a lower cover 3, and a rear cover 4. The rear cover 4 is snap-connected to the lower cover 3, the lower cover 3 is snap-connected to the upper cover 2, the upper cover 2 is sleeved and connected to the front cover 1, and the front cover 1 is located below the lower cover 3. A circuit board 5, a first contact 6, and a probe 7 are arranged inside the lower cover 3. The probe 7 is located below the first contact 6, and the first contact 6 is located below the circuit board 5. The circuit board 5 is electrically connected to both the first contact 6 and the probe 7, and a third contact 8, a second contact 9, an IC controller 10, a support frame 11, a display screen 12, and a push switch 13 are arranged on the circuit board 5. The push switch 13 is located below the display screen 12. The display screen 12 is snap-connected to the support frame 11, the support frame 11 is fixedly connected to the IC controller 10, the IC controller 10 is located below the second contact 9, the second contact 9 is located below the third contact 8, and the third contact 8, the second contact 9, the IC controller 10, and the display screen 12 are all electrically connected to the circuit board 5. A battery adhesive 14 and a battery 15 are also arranged on the circuit board 5. The battery 15 is electrically connected to the circuit board 5 through the battery adhesive 14. A battery slot 16 and a rocker 17 are arranged on the lower cover 3. The rocker 17 is located between the battery slots 16. The battery slot 16 and the rocker 17 are both fixedly connected to the lower cover 3. A first through hole 18, a square hole 19, a second through hole 20, and a third through hole 21 are arranged on the upper cover 2. The third through hole 21 is located above the second through hole 20, the second through hole 20 is located above the square hole 19, and the square hole 19 is located above the first through hole 18. A first rubber sleeve 22 is also arranged on the upper cover 2. The first rubber sleeve 22 is sleeved on the upper cover 2. A second rubber sleeve 23 is arranged on the lower cover 3. The second rubber sleeve 23 is sleeved on the lower cover 3. A pen clip 24 and a fourth through hole 25 are arranged on the rear cover 4. The fourth through hole 25 is located below the pen clip 24. The pen clip 24 is fixedly connected to the rear cover 4. A boss 26 is arranged on the pen clip 24. The boss 26 is fixedly connected to the pen clip 24. A lamp cover 27 is arranged on the front cover 1. The lamp cover 27 is fixedly connected to the front cover 1. A lighting lamp 28 is arranged inside the lamp cover 27. The lighting lamp 28 is sleeved inside the lamp cover 27, and the lighting lamp 28 is electrically connected to the first contact 6.

[0021] The working process of an electric pen that facilitates battery replacement is as follows: First, long-press the pressing switch to turn on the electric pen. Then, hold the electric pen manually. When measuring the voltage in an induced electric field, place the user's finger on the second contact, and at this time, the voltage of the electric field will be displayed on the display screen. When measuring the voltage on a charged object, place the finger on the third contact, and then bring the probe into contact with the charged object. At this time, the voltage on the measured charged object will be displayed on the display screen. During use, when the external light is dim, press the pressing switch. The pressing switch touches the first contact, and the first contact turns on the illuminating lamp, and the illuminating lamp emits light for illumination, facilitating the user to use it in dim light. When the battery needs to be replaced, press the pen clip downward. At this time, the boss on the pen clip presses the rocker through the fourth through hole, and the rocker pries up the rear cover. Then the user can remove the rear cover, and then the battery in the battery slot can be removed and replaced with a new battery. Since the battery is electrically connected to the circuit board through battery glue, this connecting component is reliably connected and also isolates the battery from the circuit board, making the battery replacement safer and more reliable. And the IC controller on the circuit board is used to control the operation of the circuit board. The IC controller is used to control the operation of the circuit board, enabling the electric pen to automatically shut down when there is no induced electric field or after 3 minutes of inactivity, and the electric pen can also continue to be used without turning it on, that is, the probe can be used to touch the charged object, and the voltage on the charged object will be displayed on the display screen to measure the contact voltage. Therefore, the electric pen is more convenient and power-saving during use. When the electric pen is not needed or not used temporarily, the pen clip is used to clamp the electric pen to an external object for convenient use next time.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electric pen facilitating battery replacement, comprising a front cover (1), an upper cover (2), a lower cover (3) and a rear cover (4). The rear cover (4) is snap-connected to the lower cover (3), the lower cover (3) is snap-connected to the upper cover (2), the upper cover (2) is sleeved and connected to the front cover (1), and the front cover (1) is located below the lower cover (3), characterized in that A circuit board (5), a first contact (6), and a probe (7) are disposed inside the lower cover (3) plate. The probe (7) is located below the first contact (6), and the first contact (6) is located below the circuit board (5). The circuit board (5) is electrically connected to both the first contact (6) and the probe (7). A third contact (8), a second contact (9), an IC controller (10), a support frame (11), a display screen (12), and a push switch (13) are provided on the circuit board (5). The push switch (13) is located below the display screen (12). The display screen (12) is snap-fitted on the support frame (11). The support frame (11) is fixedly connected to the IC controller (10). The IC controller (10) is located below the second contact (9). The second contact (9) is located below the third contact (8). The third contact (8), the second contact (9), the IC controller (10), and the display screen (12) are all electrically connected to the circuit board (5). A battery adhesive (14) and a battery (15) are further provided on the circuit board (5). The battery (15) is electrically connected to the circuit board (5) through the battery adhesive (14). A battery slot (16) and a rocker (17) are provided on the lower cover (3). The rocker (17) is located between the battery slots (16). The battery slot (16) and the rocker (17) are both fixedly connected to the lower cover (3). A pen clip (24) and a fourth through-hole (25) are provided on the rear cover (4). The fourth through-hole (25) is located below the pen clip (24). The pen clip (24) is fixedly connected to the rear cover (4). A boss (26) is provided on the pen clip (24). The boss (26) is fixedly connected to the pen clip (24).

2. The electric pen for facilitating battery replacement according to claim 1, wherein, A first through-hole (18), a square hole (19), a second through-hole (20), and a third through-hole (21) are provided on the upper cover (2). The third through-hole (21) is located above the second through-hole (20). The second through-hole (20) is located above the square hole (19). The square hole (19) is located above the first through-hole (18).

3. The electric pen for facilitating battery replacement according to claim 1, wherein A first rubber sleeve (22) is further provided on the upper cover (2). The first rubber sleeve (22) is sleeved on the upper cover (2).

4. The electric pen for facilitating battery replacement according to claim 1, wherein, A second rubber sleeve (23) is further provided on the lower cover (3). The second rubber sleeve (23) is sleeved on the lower cover (3).

5. The electric pen for facilitating battery replacement according to claim 1, wherein A lamp shade (27) is provided on the front cover (1). The lamp shade (27) is fixedly connected to the front cover (1).

6. The electric pen for facilitating battery replacement according to claim 5, wherein, A lighting lamp (28) is provided inside the lamp shade (27). The lighting lamp (28) is sleeved inside the lamp shade (27), and the lighting lamp (28) is electrically connected to the first contact (6).

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