Two-in-one clamp meter

Abstract

The utility model discloses a two-in-one clamp meter in the technical field of electrical equipment. The two-in-one clamp meter comprises an upper cover, a lower cover, a dial button, a dial button spring, a probe, a probe linkage block, a probe spring, a circuit board assembly, a key switch, a telescopic column and a pressing plate, according to the utility model, the problems of single function and incompatibility of non-contact detection and contact detection are solved; through mechanical cooperation between the toggle button and the probe linkage block, synchronous switching of probe telescoping and circuit states is realized, accurate mode switching is realized, and potential safety hazards caused by misoperation prevention are avoided. The switching between two measurement modes of non-contact and contact detection is realized through the switching function of the closed / open circuit state of the silica gel key, and the operation is convenient and fast; and meanwhile, the probe is limited by the sliding groove and the spring, so that the external interference is completely shielded when the probe retracts inwards, the probe stably contacts a measured object when the probe is exposed, high-precision measurement is realized, and the durability of equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrician's equipment technical field, concretely is a two-in-one clamp meter. BACKGROUND

[0002] The clamp meter and the test pen have very extensive application, involve all big industries. But there are few products of the two functions of the clamp meter and the test pen on the market. At present, the market is mainly single test pen and clamp meter. The test pen and the clamp meter have respective advantages and disadvantages in the electric power measurement field.

[0003] Among them, the test pen is mainly used for detecting voltage, judging phase line and zero line and checking line fault in daily life. Compared with the clamp meter, the test pen can detect only by one contact point, and the operation is simple. However, relatively, the test pen cannot directly read the current value and the voltage value.

[0004] And the clamp meter is mainly used for measuring current, multifunctional measurement and detecting equipment running state in daily life. Compared with the test pen, the clamp meter has more complete functions, and the clamp meter can be measured in non-contact mode, and the safety is higher. However, relatively, the clamp meter must find two measurement points when measuring, which is not as convenient as the test pen.

[0005] Therefore, the current technology mainly has the problems of single function and non-contact and contact detection incompatibility. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a two-in-one clamp meter, to solve the problems of single function and non-contact and contact detection incompatibility in the above background technology.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a two-in-one clamp meter, comprising an upper cover, a lower cover, a knob, a knob spring, a probe, a probe linkage block, a probe spring, a circuit board assembly, a key switch, an extension column and a pressing plate.

[0008] The circuit board assembly is locked on the upper cover, and one end of the probe spring is fixed on the circuit board assembly.

[0009] The probe is embedded in the probe connecting hole of the probe linkage block, and the probe linkage block is connected with the upper cover through the probe spring.

[0010] One end of the probe is sleeved in the probe spring, and the other end is slidingly installed in the probe sliding groove of the upper cover.

[0011] The knob is movably arranged in the lower cover slot of the lower cover, and the knob is connected with the probe linkage block.

[0012] The extension column is provided with a knob spring mounting hole, and the knob spring is mounted in the knob spring mounting hole.

[0013] The pressing plate is locked on the lower cover, the knob is connected with the telescopic column through the knob spring, and the telescopic column is in abutment with the pressing plate at the end away from the knob spring;

[0014] The upper cover cooperates with the lower cover to form a shell;

[0015] The key switch is welded on the circuit board assembly, when the probe is retracted into the shell, the probe linkage block cooperates with the key switch, and the key switch is in a closed state; when the probe is extended out of the shell, the probe linkage block is separated from the key switch, and the key switch is in an open state.

[0016] Preferably, the linkage block end face is provided on the probe linkage block, the limiting rib is provided on the upper cover, and the linkage block end face is tightly attached to the limiting rib through the action force of the probe spring.

[0017] Preferably, the U-shaped grooves are provided on the upper cover and the lower cover, the U-shaped groove of the upper cover is provided on the side of the probe sliding groove, and the iron core is installed in the U-shaped groove.

[0018] Preferably, the knob upper end face, the knob boss and the knob positioning column are provided on the knob, one side of the knob boss is connected with the knob upper end face, and the other side is connected with the knob positioning column; the limiting groove is provided on the probe linkage block, and the knob positioning column is in sliding connection with the limiting groove.

[0019] Preferably, the lower cover first positioning groove, the lower cover second positioning groove, the lower cover protruding rib and the lower cover slot are provided on the lower cover, the lower cover first positioning groove and the lower cover protruding rib are provided on the two sides of the lower cover slot, the lower cover second positioning groove is provided below the same side of the lower cover first positioning groove, and the shapes of the lower cover second positioning groove and the lower cover first positioning groove are matched with the knob boss.

[0020] Preferably, the knob upper end face is connected with the lower cover protruding rib, when the knob is pressed, the knob boss can be switchably clamped in the lower cover first positioning groove or the lower cover second positioning groove under the driving of the probe spring and the probe linkage block.

[0021] Preferably, the shell surface of the upper cover is provided with three square holes from large to small, the largest square hole is installed with a liquid crystal display, the second largest square hole is installed with a silica gel key, and the smallest square hole is installed with a conductive silica gel key, wherein, the silica gel key is provided with three keys.

[0022] Compared with the prior art, the utility model has the advantages that: the utility model realizes the synchronous switching of the probe extension and contraction and the circuit state through the mechanical cooperation of the limit groove, the spring and the positioning column of the knob and the probe linkage block, realizes the accurate mode switching and avoids the security risks caused by the anti-misoperation, realizes the switching of the two measurement modes of the non-contact and contact detection through the closed / open state switching function of the silica gel key, is convenient and fast, and simultaneously ensures that the probe is completely shielded from the external interference when being retracted and stably contacts the measured object when being exposed, realizes the high-precision measurement and improves the durability of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can also be obtained according to these drawings without paying the creative labor.

[0024] Figure 1 It is the overall parts explosion drawing of the utility model;

[0025] Figure 2 It is the probe linkage block structure schematic view of the utility model;

[0026] Figure 3 It is the local enlarged structure schematic view of the probe linkage block of the utility model;

[0027] Figure 4 It is the circuit board assembly parts explosion schematic view of the utility model;

[0028] Figure 5 It is the circuit board assembly structure schematic view of the utility model;

[0029] Figure 6 It is the parts explosion drawing of the utility model after removing the lower cover;

[0030] Figure 7 It is the local enlarged view of the end surface of the probe linkage block and the probe connection of the utility model;

[0031] Figure 8 It is the local enlarged structure schematic view of the upper cover and the probe connection of the utility model;

[0032] Figure 9 It is the structure schematic view of the utility model after removing the lower cover;

[0033] Figure 10 It is the front view of the utility model;

[0034] Figure 11 It is the parts explosion drawing of the utility model after removing the upper cover;

[0035] Figure 12 Part exploded view A is partially enlarged view of the utility model for removing the upper cover;

[0036] Figure 13 Part exploded view B is partially enlarged view of the utility model for removing the upper cover;

[0037] Figure 14 Part exploded view C is partially enlarged view of the utility model for removing the upper cover;

[0038] Figure 15 The schematic diagram of the mode conversion process of the utility model is shown in figure 8;

[0039] Figure 16 The schematic diagram of the mode conversion process of the utility model is shown in figure 8;

[0040] Figure 17 The schematic diagram of the mode conversion process of the utility model is shown in figure 8;

[0041] Figure 18 The schematic diagram of the mode conversion process of the utility model is shown in figure 8;

[0042] Figure 19 The schematic diagram of the mode conversion process of the utility model is shown in figure 8;

[0043] Figure 20 The schematic diagram of the mode conversion process of the utility model is shown in figure 8;

[0044] Figure 21 The schematic diagram of the mode conversion process of the utility model is shown in figure 8;

[0045] 1. Top cover; 101. Limiting rib; 102. Probe groove; 2. Probe; 201. Probe positioning post; 202. Probe rod; 3. Probe linkage block; 301. Probe connection hole; 302. Linkage block end face; 303. Limiting groove; 304. Linkage block side wall; 4. Iron core; 5. LCD display; 6. Circuit board assembly; 601. Circuit board assembly positioning hole; 7. First self-tapping screw; 8. Probe spring; 801. Probe spring positioning post; 802. Probe spring positioning hole; 9. Push button switch; 901. Push button boss; 10. Conductive silicone button; 11. Silicone button; 12. Machine screw; 13. Battery cover; 14. Second self-tapping screw 15. Battery; 16. Lower cover; 1601. First positioning groove of lower cover; 1602. Second positioning groove of lower cover; 1603. Lower cover rib; 1604. Positioning post of lower cover; 1605. Slot of lower cover; 1606. Rib of lower cover; 17. Toggle switch; 1701. Upper end face of toggle switch; 1702. Boss of toggle switch; 1703. Lower end face of toggle switch; 1704. Guide hole; 1705. Positioning post of toggle switch; 18. Toggle switch spring; 19. Telescopic post; 1901. Guide post; 1902. Mounting hole of toggle switch spring; 1903. Boss of telescopic post; 20. Self-tapping screw; 21. Pressure plate; 2101. Positioning hole of pressure plate; 2102. Flat surface of pressure plate. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0047] One embodiment of this utility model:

[0048] like Figures 1-21 As shown, it includes an upper cover 1, a probe 2, a probe linkage block 3, an iron core 4, an LCD display 5, a circuit board assembly 6, a probe spring 8, a push-button switch 9, a conductive silicone button 10, a silicone button 11, a machine screw 12, a battery cover 13, a battery 15, a lower cover 16, a toggle switch 17, a toggle switch spring 18, a telescopic column 19, and a pressure plate 21.

[0049] The circuit board assembly 6 integrates an NCV sensing module and a voltage measurement circuit. The NCV sensing module, together with the push-button switch 9, the LCD display 5, and the iron core 4, enables non-contact AC current measurement, giving the instrument the ability to measure AC current without contact. The voltage measurement circuit, together with the probe 2, the conductive silicone button 10, and the silicone button 11, enables contact voltage measurement.

[0050] The upper cover 1 is provided with a U-shaped groove and three square holes from large to small, the U-shaped groove is arranged at the top of the upper cover 1, two square holes are arranged on the front surface of the upper cover 1, wherein the U-shaped groove is used for mounting the iron core 4, the largest square hole is used for mounting the liquid crystal display 5, the second largest square hole is used for mounting the silica gel button 11, and the smallest square hole is used for mounting the conductive silica gel button 10, wherein the silica gel button 11 is provided with three buttons.

[0051] Secondly, the upper cover 1 is provided with a limiting rib 101 and a probe sliding groove 102, the limiting rib 101 and the probe sliding groove 102 are arranged on the same side of the U-shaped groove, and the probe sliding groove 102 is arranged at the upper end of the limiting rib 101; the probe 2 is provided with a probe positioning column 201 and a probe rod 202 at both ends respectively, and the probe linkage block 3 is provided with a columnar body and a square body on both sides respectively, wherein the middle of the columnar body is provided with a probe connecting hole 301, the end face of the columnar body is a linkage block end face 302, the middle of the square body is provided with a limiting groove 303, and the side of the square body close to the button switch 9 is a linkage block side wall 304; the probe 2 is embedded with a corresponding length in the probe connecting hole 301 according to the required depth, then the probe positioning column 201 and the probe spring positioning hole 802 of the probe spring 8 are mutually sleeved, the probe rod 202 of the probe 2 is placed in the probe sliding groove 102, and the probe rod 202 can slide in the probe sliding groove 102, at the same time, the linkage block end face 302 of the probe linkage block 3 is tightly attached to the limiting rib 101 of the upper cover 1 under the action of the force of the probe spring 8, in addition, the circuit board assembly 6 is locked on the upper cover 1 through the first self-tapping screw 7, the probe spring positioning column 801 of the probe spring 8 is welded on the circuit board assembly positioning hole 601 of the circuit board assembly 6, and the button switch 9 is welded on the side of the circuit board assembly 6 adjacent to the probe spring 8.

[0052] The top of the lower cover 16 is provided with a U-shaped groove, the middle part is provided with a lower cover first positioning groove 1601, a lower cover second positioning groove 1602, a lower cover protruding rib 1603, a lower cover positioning column 1604, a lower cover slot 1605 and a lower cover rib 1606, and the bottom is provided with a battery compartment, wherein the battery compartment is used for installing the battery 15, and the battery cover 13 is locked on the surface of the battery compartment through the machine screw 12; the lower cover slot 1605 is a square slot, two small square slots with open sides are arranged on the right side of the lower cover slot 1605, the two small square slots are the lower cover first positioning groove 1601 and the lower cover second positioning groove 1602 from top to bottom respectively, and a large column and a small column are arranged at the upper end and the lower end of the lower cover slot 1605 respectively, wherein the large column is the lower cover rib 1606, and the small column is the lower cover positioning column 1604; the knob 17 is provided with a knob boss 1702, one side of the knob boss 1702 is provided with a knob upper end surface 1701, and the other side is provided with a knob positioning column 1705, the opposite side of the knob upper end surface 1701 is provided with a knob lower end surface 1703, and the knob lower end surface 1703 is provided with a guide hole 1704; wherein the knob 17 is installed in the lower cover slot 1605, at the same time, the knob boss 1702 falls into the lower cover first positioning groove 1601, and the knob upper end surface 1701 is connected with the lower cover protruding rib 1603. Then, the knob positioning column 1705 is installed in the limiting groove 303 of the probe linkage block 3, and the upper cover 1 and the lower cover 16 are locked with each other through the second self-tapping screw 14.

[0053] The telescopic column 19 is a large and small column body connected with each other, wherein the large column body is a guide column 1901, and the small column body is a telescopic column boss 1903; the guide column 1901 is provided with a knob spring mounting hole 1902 in the middle, the knob spring 18 is installed in the knob spring mounting hole 1902, the guide column 1901 is installed in the guide hole 1704 of the knob 17, and the telescopic column boss 1903 is ensured to face outward.

[0054] The pressing plate 21 is provided with a pressing plate positioning hole 2101 at four corners, the pressing plate positioning hole 2101 is aligned with the lower cover positioning column 1604, and the pressing plate 21 is locked on the lower cover 16 through the self-tapping screw 20, at this time, the pressing plate plane 2102 of the pressing plate 21 is attached to the lower cover rib 1606, and the telescopic column boss 1903 is attached to the pressing plate plane 2102 due to the force of the knob spring 18.

[0055] When the AC current non-contact measurement mode is started, the voltage test mode needs to be closed. At this time, the knob 17 needs to be pressed inward. At this time, the knob positioning column 1705 slides in the limiting groove 303 of the probe linkage block 3, and the upper end surface 1701 of the knob is separated from the lower cover protruding rib 1603. After that, when the lower end surface 1703 of the knob is in contact with the pressing plate plane 2102, at this time, the knob 17 is slid downward, the knob 17 drives the probe linkage block 3 to slide downward, when the side surface of the knob boss 1702 contacts the side rib of the second positioning groove 1602 of the lower cover, at this time, the linkage block side wall 304 contacts the key boss 901, so that the key switch 9 is in a closed state. Then, the knob 17 is released, under the action of the knob spring 18, the knob boss 1702 falls into the second positioning groove 1602 of the lower cover, at this time, the probe 2 is retracted into the inside of the shell, the key switch 9 is in a closed state at this time, and the conductive silica gel key 10 is in an open circuit state with the circuit board assembly 6. Then, the instrument is held again and gradually approached to the measured object, and during the detection process, if the measured object is electrified, the liquid crystal display 5 is displayed from green backlight to red. Finally, if the current of the measured object is to be measured, the measured object is only needed to be placed in the U-shaped groove of the instrument, and the liquid crystal display 5 of the instrument will display the measured current value.

[0056] When the voltage test mode is started, the AC current non-contact measurement mode needs to be closed. At this time, the knob 17 is pressed inward, the upper end surface 1701 of the knob is separated from the second positioning groove 1602 of the lower cover, and the knob positioning column 1705 slides in the limiting groove 303 of the probe linkage block 3. When the lower end surface 1703 of the knob is in contact with the pressing plate plane 2102, at this time, under the action of the probe spring 8, the probe linkage block 3 drives the knob 17 to slide upward, when the side surface of the knob boss 1702 contacts the side rib of the first positioning groove 1601 of the lower cover, at this time, the linkage block side wall 304 is completely separated from the key boss 901, so that the key switch 9 is in an open circuit state. Then, the knob 17 is released, under the action of the knob spring 18, the knob boss 1702 falls into the first positioning groove 1601 of the lower cover, at this time, the probe 2 extends out of the shell, the key switch 9 is in an open circuit state at this time, and the conductive silica gel key 10 is in a closed state with the circuit board assembly 6. Then, the instrument is held again and the conductive silica gel key 10 is pressed, the probe 2 is contacted with the measured object, and when the measured object is detected to be electrified, the liquid crystal display 5 will display the measured voltage value.

[0057] In the description of the specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] The preferred embodiments disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details and do not limit the utility model to the specific embodiments described. Obviously, according to the content of the description, many modifications and changes can be made. The description selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A two-in-one multimeter, characterized in that: The utility model relates to a probe device, including upper cover (1), lower cover (16), knob (17), knob spring (18), probe (2), probe linkage block (3), probe spring (8), circuit board assembly (6), key switch (9), telescopic column (19) and presser plate (21); The circuit board assembly (6) is locked on the upper cover (1), and one end of the probe spring (8) is fixed on the circuit board assembly (6); The probe (2) is embedded in the probe connecting hole (301) of the probe linkage block (3), and the probe linkage block (3) is connected with the upper cover (1) through the probe spring (8); One end of the probe (2) is sleeved in the probe spring (8), and the other end is slidably installed in the probe sliding groove (102) of the upper cover (1); The knob (17) is movably arranged in the lower cover slot (1605) of the lower cover (16), and the knob (17) is connected with the probe linkage block (3); The telescopic column (19) is provided with a knob spring mounting hole (1902), and the knob spring (18) is mounted in the knob spring mounting hole (1902); The presser plate (21) is locked on the lower cover (16), the knob (17) is connected with the telescopic column (19) through the knob spring (18), and one end of the telescopic column (19) away from the knob spring (18) abuts against the presser plate (21); The upper cover (1) and the lower cover (16) cooperate to form a shell; The key switch (9) is welded on the circuit board assembly (6), when the probe (2) is retracted into the shell, the probe linkage block (3) cooperates with the key switch (9), and the key switch (9) is in a closed state; when the probe (2) is extended out of the shell, the probe linkage block (3) is separated from the key switch (9), and the key switch (9) is in an open state.

2. A two-in-one multimeter according to claim 1, wherein: The probe linkage block (3) is provided with a linkage block end face (302), the upper cover (1) is provided with a limiting rib (101), and the linkage block end face (302) is tightly attached to the limiting rib (101) through the action force of the probe spring (8).

3. A two-in-one multimeter according to claim 1, wherein: The upper cover (1) and the lower cover (16) are both provided with a U-shaped groove, the U-shaped groove of the upper cover (1) is arranged on the side of the probe sliding groove (102), and an iron core (4) is mounted in the U-shaped groove.

4. The two-in-one multimeter according to claim 1, wherein: The knob (17) is provided with a knob upper end face (1701), a knob boss (1702) and a knob positioning column (1705), one side of the knob boss (1702) is connected with the knob upper end face (1701), and the other side is connected with the knob positioning column (1705); the probe linkage block (3) is provided with a limiting groove (303), and the knob positioning column (1705) is slidably connected with the limiting groove (303).

5. A two-in-one multimeter according to claim 4, wherein: The lower cover (16) is provided with a lower cover first positioning groove (1601), a lower cover second positioning groove (1602), a lower cover convex rib (1603) and a lower cover slot (1605), the lower cover first positioning groove (1601) and the lower cover convex rib (1603) are arranged on the two sides of the lower cover slot (1605), the lower cover second positioning groove (1602) is arranged below the same side of the lower cover first positioning groove (1601), and the shapes of the lower cover second positioning groove (1602) and the lower cover first positioning groove (1601) are matched with the knob boss (1702).

6. A two-in-one multimeter according to claim 5, wherein: The upper end surface (1701) of the knob is connected with the lower cover protruding rib (1603), when the knob (17) is pressed, the knob protruding platform (1702) is switchably clamped in the first positioning slot (1601) or the second positioning slot (1602) of the lower cover under the driving of the probe spring (8) and the probe linkage block (3).

7. A two-in-one multimeter according to claim 1, wherein: The shell surface of the upper cover (1) is provided with three square holes from large to small, wherein the largest square hole is provided with a liquid crystal display (5), the second largest square hole is provided with a silica gel key (11), and the smallest square hole is provided with a conductive silica gel key (10).

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