A screwdriver testing pen capable of displaying the value of the precisely measured voltage

Abstract

The utility model relates to a screwdriver testing pen capable of displaying accurate measurement voltage value, including handle assembly, first installation cavity and second installation cavity, and first installation cavity and second installation cavity are communicated, screwdriver head includes handle and bit, and the bottom fixed setting of handle is in first installation cavity, and the top of bit extends first installation cavity, and the bit is cross screwdriver head or a character screwdriver head, and testing assembly fixed setting is in second installation cavity, and testing assembly includes circuit board, and the integrated silicone button voltage health of circuit board has silica gel button voltage health, display part, battery and contact type voltage detection module, and the front side of first installation cavity is the open structure, and display part is located the open structure position of first installation cavity, can be used as powerful screwdriver, also can be used as accurate voltage measurement display, on -off measurement, leakage detection, zero fire line judgment, non -contact voltage measurement, covers multiple application scenarios, reduces tool switching, promotes efficiency.

Description

Technical Field

[0001] This utility model relates to the field of screwdriver voltage tester technology, and in particular to a screwdriver voltage tester that can display accurate measured voltage values. Background Technology

[0002] As a type of electrical testing device, a screwdriver voltage tester can detect whether the object being tested is energized. However, the voltage reading it displays is merely a simulated fixed value. Alternatively, a multi-colored indicator light can indicate whether a wire is energized, or a neon bulb can indicate that a conductor is energized. It cannot accurately measure voltage values ​​and therefore cannot meet user needs. Utility Model Content

[0003] Based on the above, the purpose of this utility model is to provide a screwdriver voltage tester that can display accurate measured voltage values. It can be used as a powerful screwdriver and can also accurately measure and display voltage values.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model provides a screwdriver voltage tester that can display accurate measured voltage values, including:

[0006] A grip assembly includes a first mounting cavity and a second mounting cavity, the first mounting cavity and the second mounting cavity communicating with each other;

[0007] A screwdriver bit, comprising a handle and a head, wherein the bottom of the handle is fixedly disposed in the first mounting cavity, and the top of the head extends out of the first mounting cavity, and the head is a Phillips head screwdriver bit or a flathead screwdriver bit;

[0008] A voltage measuring component is fixedly disposed in the second mounting cavity. The voltage measuring component includes a circuit board, on which a silicone button voltage key, a display, a battery, and a contact voltage detection module are integrated. The front side of the first mounting cavity is an open structure, and the display is located at the open structure position of the first mounting cavity.

[0009] Furthermore, the circuit board also integrates a non-contact voltage detection module.

[0010] Furthermore, the circuit board also integrates a buzzer on / off detection module and a silicone button connection key.

[0011] Furthermore, a connecting piece is electrically connected to the circuit board, and a connecting spring is provided on the connecting piece. The bottom of the screwdriver bit's handle is sleeved on the connecting spring and electrically connected to the connecting spring.

[0012] Furthermore, the circuit board also integrates a silicone power button.

[0013] Furthermore, a mounting frame is provided inside the second mounting cavity, and the electrical measurement component is mounted on the mounting frame. The mounting frame includes a front cover plate and a rear battery compartment. The front cover plate and the rear battery compartment are detachably connected. The front cover plate has an opening structure, and the display unit is located at the position of the opening structure of the front cover plate.

[0014] Furthermore, the bottom of the second mounting cavity is an open structure, the bottom of the rear battery compartment is provided with an open structure, and the grip assembly also includes a battery cover for sealing the open structure at the bottom of the second mounting cavity, so that the battery can be inserted from the open structure at the bottom of the second mounting cavity.

[0015] Furthermore, the display unit includes a lens, a liquid crystal panel, a liquid crystal bracket, conductive adhesive, and a backlight panel. The backlight panel is electrically connected to the circuit board, the liquid crystal bracket is electrically connected to the circuit board, the conductive adhesive bonds the liquid crystal panel to the liquid crystal bracket, the backlight panel is located behind the liquid crystal panel, and the lens is located in front of the liquid crystal bracket.

[0016] Furthermore, a latch is provided inside the second mounting cavity, and a slot that mates with the latch is provided on the rear side of the top of the mounting bracket.

[0017] Furthermore, the grip assembly includes an insulated grip with a soft shell disposed thereon.

[0018] The beneficial effects of this utility model are as follows:

[0019] This invention provides a screwdriver voltage tester that can display accurate measured voltage values. It is multi-functional, allowing the screwdriver head to be used as a powerful screwdriver. Simultaneously, through the circuit board of the voltage testing component, silicone button voltage key, display unit, battery, and contact voltage detection module, when the silicone button voltage key is pressed, the screwdriver head contacts the object being tested, forming a circuit through the human body and the ground. The contact voltage detection module can measure the actual voltage and display it on the display unit. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0021] Figure 1 This invention provides a schematic diagram of a screwdriver voltage tester capable of displaying accurate measured voltage values ​​in an embodiment of the present invention.

[0022] Figure 2 This utility model provides an exploded structural diagram of a screwdriver test pen that can display accurate measured voltage values;

[0023] Figure 3 This is a schematic diagram of the structure of the insulated grip provided in an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the rear battery compartment provided in an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the integrated module of the circuit in an embodiment of the present invention.

[0026] In the picture:

[0027] 1. Grip assembly; 11. Insulated grip; 12. Soft shell; 13. First mounting cavity; 14. Second mounting cavity; 15. Locking mechanism; 2. Screwdriver bit; 21. Handle; 22. Bit; 3. Electrical testing assembly; 31. Circuit board; 311. Silicone button voltage key; 312. Display unit; 3121. Lens; 3122. LCD panel; 3123. LCD bracket; 3124. Conductive adhesive; 3125. Backlight panel; 313. Connector 314. Contact voltage detection module; 315. Non-contact voltage detection module; 316. Buzzer continuity detection module; 317. Silicone button power button; 318. Upper battery cell; 319. Lower battery cell connector; 32. Connecting piece; 33. Connecting spring; 34. Mounting bracket; 341. Front cover; 342. Rear battery compartment; 343. Slot; 35. Battery; 4. Battery cover; 41. Lower battery cell. Detailed Implementation

[0028] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0032] like Figures 1 to 5As shown, this utility model embodiment provides a screwdriver voltage tester capable of displaying accurate measured voltage values, including: a handle assembly 1, which is an insulating plastic shell, the handle assembly 1 including an insulating handle 11, the insulating handle 11 being provided with a soft shell 12, the soft shell relieving hand pressure when using the screwdriver voltage tester, the soft shell being injection molded on the outside of the insulating handle 11, and including a first mounting cavity 13 and a second mounting cavity 14, the first mounting cavity 13 being used to mount a screwdriver head 2, and the second mounting cavity 14 being used to mount a voltage testing component 3; the screwdriver head 2 It includes a handle 21 and a blade 22. The bottom of the handle 21 is fixedly disposed in the first mounting cavity 13. The first mounting cavity 13 is a long, tubular cavity. Most of the handle 21 is wrapped by the first mounting cavity 13 to increase the strength of the handle 21. The top of the blade 22 extends out of the first mounting cavity 13. The blade 22 is a Phillips head screwdriver or a flathead screwdriver. It should be noted that the blade 22 can preferably be replaced between a Phillips head screwdriver and a flathead screwdriver; or preferably, it can be designed with a structure in which the two sides of the handle 21 are respectively Phillips head screwdriver and flathead screwdriver. The voltage measuring component 3 is fixedly disposed in the second mounting cavity 14. The voltage measuring component 3 includes a circuit board 31. The circuit board 31 integrates a silicone button voltage key 311, a display unit 312, a battery 35, and a contact voltage detection module 313. The contact voltage detection module 313 is a contact voltage detection circuit integrated on the circuit board 31, which belongs to the prior art and has been described in patent CN218099348U, so it will not be repeated here. The front side of the first mounting cavity 13 is an open structure, and the display unit 312 is located at the open structure position of the first mounting cavity 13.

[0033] This utility model provides a screwdriver voltage tester that can display accurate measured voltage values. It is multi-functional, with the screwdriver head 2 used as a powerful screwdriver. Simultaneously, through the circuit board 31, silicone button voltage key 311, display unit 312, battery 35, and contact voltage detection module 313 of the voltage testing component 3, when the silicone button voltage key 311 is pressed, the screwdriver head 2 contacts the object being tested, forming a circuit with the ground through the human body. The contact voltage detection module 313 can measure the actual voltage and display it on the display unit 312.

[0034] In some embodiments, such as Figure 5As shown, the circuit board 31 also integrates a non-contact voltage detection module 314. The non-contact voltage detection module 314 refers to the non-contact voltage detection circuit integrated into the circuit board 31. The principle of the non-contact voltage detection circuit has been described in patent CN217820564U, and will not be repeated here. In this embodiment, the default mode is non-contact voltage detection when the device is powered on. Contact voltage detection mode is only activated after pressing the silicone voltage button 311. In non-contact voltage detection mode, when the screwdriver voltage tester, which displays accurate voltage values, is brought close to the object being tested, its voltage intensity will be displayed on the display. It should be noted that the voltage value displayed on the display 312 in non-contact voltage detection mode is an analog value, not a real value. In this embodiment, the screwdriver voltage tester, which displays accurate voltage values, can not only be used as a screwdriver but also combines contact and non-contact voltage detection functions, covering multiple application scenarios and reducing tool switching.

[0035] In some embodiments, such as Figure 5 As shown, the circuit board 31 also integrates a buzzer continuity detection module 315 and a silicone button connection key 316. Specifically, the buzzer continuity detection module 315 refers to a continuity detection circuit integrated on the circuit board 31. The circuit board 31 is equipped with a buzzer connected to it. When the silicone button connection key 316 is pressed, a continuity test of the conduction circuit can be performed, and the buzzer will sound based on the test result.

[0036] In some embodiments, in the contact voltage detection mode, the screwdriver head 2 and the contact voltage detection module need to be electrically connected, such as... Figure 2 As shown, a connecting piece 32 is electrically connected to the circuit board 31, and a connecting spring 33 is provided on the connecting piece 32. The bottom of the screwdriver bit 2's handle 21 is sleeved on the connecting spring 33 and electrically connected to the connecting spring 33. Specifically, in this embodiment, the connecting piece 32 is located below the first mounting cavity 13, and the corresponding connecting spring 33 is also located below the first mounting cavity 13. Preferably, the screwdriver bit 2's handle 21 extends out of the bottom of the first mounting cavity 13, so that the bottom of the handle 21 can be sleeved on the connecting spring 33 and electrically connected to the circuit board 31 through the connection with the connecting spring 33.

[0037] In some embodiments, such as Figure 1 and 2 As shown, the circuit board 31 also integrates a silicone power button 317. Pressing the silicone power button 317 powers on the screwdriver measuring pen and puts it into non-contact electrical testing mode by default.

[0038] In some embodiments, such as Figure 2 As shown, in order to fix the electrical measuring component 3, a mounting bracket 34 is provided in the second mounting cavity 14. The electrical measuring component 3 is mounted on the mounting bracket 34. The mounting bracket 34 includes a front cover plate 341 and a rear battery compartment 342. The front cover plate 341 and the rear battery compartment 342 are detachably connected. The front cover plate 341 has an opening structure, and the display unit 312 is located at the opening structure of the front cover plate 341. Specifically, during installation, there is a cavity between the front cover plate 341 and the rear battery compartment 342. The electrical measuring component 3 is installed in the cavity. The front cover plate 341 seals the opening on the front side of the second mounting cavity 14. The front cover plate 341 has corresponding clearance openings, which correspond to the installation positions of the silicone power button 317, the display unit 312, the silicone voltage button 311, and the silicone connection button 316.

[0039] In some embodiments, in order to securely mount the battery 35, such as Figures 1 to 4 As shown, the bottom of the second mounting cavity 14 is an open structure. The circuit board 31 is provided with an upper battery plate 318 and a lower battery plate connector 319. The bottom of the rear battery compartment 342 is also an open structure. The grip assembly further includes a battery cover 4, on which a lower battery plate 41 is provided to seal the open structure at the bottom of the second mounting cavity 14. The battery 35 can be inserted through the open structure at the bottom of the second mounting cavity 14. Specifically, the battery 35 can be placed into the battery 35 compartment from the bottom of the second mounting cavity 14, and then the battery cover 4 is closed. After closing the battery cover 4, the lower battery plate 41 is connected to the lower battery plate connector 319. The upper and lower ends of the battery 35 are respectively connected to the upper battery plate 318 and the lower battery plate 41, enabling power supply. The battery 35 preferably uses a AAA battery for better battery life. The battery cover 4 is detachably connected, and the detachable connection method can be threads, clips, etc. In this embodiment, a threaded connection is used.

[0040] In some embodiments, such as Figure 2As shown, the display unit 312 includes a lens 3121, a liquid crystal panel 3122, a liquid crystal bracket 3123, conductive adhesive 3124, and a backlight panel 3125. The backlight panel 3125 is electrically connected to the circuit board 31, and the liquid crystal bracket 3123 is electrically connected to the circuit board 31. The conductive adhesive 3124 adheres the liquid crystal panel 3122 to the liquid crystal bracket 3123. The backlight panel 3125 is located behind the liquid crystal panel 3122, and the lens 3121 is located in front of the liquid crystal bracket 3123. Specifically, the lens 3121 is fixed on the front cover plate 341 to protect the liquid crystal panel 3122. The liquid crystal panel 3122 is connected to the liquid crystal bracket 3123 through conductive adhesive 3124. The liquid crystal bracket 3123 is electrically connected to the circuit board 31, thereby making the liquid crystal panel 3122 electrically connected to the circuit board 31. The liquid crystal panel 3122 is used to display the test structure. A backlight panel 3125 is also provided on the rear side of the liquid crystal panel 3122. The backlight panel 3125 can emit green light and red light. In this embodiment, in the contact voltage detection mode, the neutral wire and the live wire can be determined by the indication of the backlight panel 3125. When the screwdriver head 2 touches the live wire hole of the socket, the backlight panel 3125 is lit up green by default; when the actual voltage is measured, the backlight panel 3125 is lit up red, which is judged as the live wire. If there is no change, it is the neutral wire.

[0041] In some embodiments, such as Figure 3 and 4 As shown, during installation, in order to better fix the position of the mounting bracket 34, a latch 15 is provided in the second mounting cavity 14, and a slot 343 that cooperates with the latch 15 is provided on the rear side of the top of the mounting bracket 34.

[0042] This utility model provides a screwdriver voltage tester that can display accurate measured voltage values. It is multi-functional, serving as a powerful screwdriver, a precise voltage measurement and display device, a continuity tester, a leakage detector, a live / neutral wire detector, and a non-contact voltage measurement device, covering various application scenarios. This reduces tool switching and improves efficiency.

[0043] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A screwdriver voltage tester capable of displaying accurate measured voltage values, characterized in that, include: A grip assembly includes a first mounting cavity and a second mounting cavity, the first mounting cavity and the second mounting cavity communicating with each other; A screwdriver bit, comprising a handle and a head, wherein the bottom of the handle is fixedly disposed in the first mounting cavity, and the top of the head extends out of the first mounting cavity, and the head is a Phillips head screwdriver bit or a flathead screwdriver bit; A voltage measuring component is fixedly disposed in the second mounting cavity. The voltage measuring component includes a circuit board, on which a silicone button voltage key, a display, a battery, and a contact voltage detection module are integrated. The front side of the first mounting cavity is an open structure, and the display is located at the open structure position of the first mounting cavity.

2. A screwdriver voltage tester capable of displaying accurate measured voltage values ​​according to claim 1, characterized in that, The circuit board also integrates a non-contact voltage detection module.

3. A screwdriver voltage tester capable of displaying accurate measured voltage values ​​according to claim 1, characterized in that, The circuit board also integrates a buzzer on / off detection module and a silicone button connection key.

4. A screwdriver voltage tester capable of displaying accurate measured voltage values ​​according to claim 1, characterized in that, A connecting piece is electrically connected to the circuit board, and a connecting spring is provided on the connecting piece. The bottom of the screwdriver bit handle is sleeved on the connecting spring and electrically connected to the connecting spring.

5. A screwdriver voltage tester capable of displaying accurate measured voltage values ​​according to claim 1, characterized in that, The circuit board also integrates a silicone power button.

6. A screwdriver voltage tester capable of displaying accurate measured voltage values ​​according to claim 1, characterized in that, The second mounting cavity is provided with a mounting frame, and the electrical measurement component is mounted on the mounting frame. The mounting frame includes a front cover plate and a rear battery compartment. The front cover plate and the rear battery compartment are detachably connected. The front cover plate has an opening structure, and the display unit is located at the opening structure of the front cover plate.

7. A screwdriver voltage tester capable of displaying accurate measured voltage values ​​according to claim 6, characterized in that, The bottom of the second mounting cavity is an open structure, the bottom of the rear battery compartment is provided with an open structure, and the grip assembly also includes a battery cover for sealing the open structure at the bottom of the second mounting cavity, and the battery can be inserted from the open structure at the bottom of the second mounting cavity.

8. A screwdriver voltage tester capable of displaying accurate measured voltage values ​​according to claim 1, characterized in that, The display unit includes a lens, a liquid crystal panel, a liquid crystal bracket, conductive adhesive, and a backlight panel. The backlight panel is electrically connected to the circuit board, the liquid crystal bracket is electrically connected to the circuit board, and the conductive adhesive bonds the liquid crystal panel to the liquid crystal bracket. The backlight panel is located behind the liquid crystal panel, and the lens is located in front of the liquid crystal bracket.

9. A screwdriver voltage tester capable of displaying accurate measured voltage values ​​according to claim 6, characterized in that, The second mounting cavity is provided with a latch, and the rear side of the top of the mounting bracket is provided with a slot that mates with the latch.

10. A screwdriver voltage tester capable of displaying accurate measured voltage values ​​according to claim 1, characterized in that, The grip assembly includes an insulated grip with a soft shell.

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