Integrated clamp meter

Abstract

The utility model discloses an integrated clamp meter in the technical field of electrical equipment. The integrated clamp meter comprises an upper cover, a lower cover, a button, a button spring, an iron core, a probe, a probe linkage block, a probe spring, a circuit board assembly, a key switch 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; a button is arranged to control the switching between a non-contact measurement mode and a contact measurement mode, so that the tool switching time is shortened, and the operation convenience is improved; secondly, the non-contact measurement characteristic of the clamp meter can cope with a high-voltage or complex wiring environment, and the probe mode can still be flexibly used in a narrow space, so that the environmental adaptability is optimized; in addition, the probe is mechanically controlled to retract and stretch out, so that the probe is ensured not to be exposed in a non-use state, and the risk of mistaken touch is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrician's equipment technical field, concretely is a kind of integrated clamp meter. BACKGROUND

[0002] Clamp meter and test pen have very extensive application, involve major industry.But there are few products of clamp meter and test pen two kinds of functions on market.At present, market is mainly single test pen and clamp meter.And test pen and clamp meter have advantages and disadvantages in electric power measurement field.

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

[0004] And clamp meter is mainly used for measuring current, multifunctional measurement and detecting equipment operating state in daily life.Relative to test pen, clamp meter is more complete in function, and clamp meter can be non-contact measured, and safety is higher;However, relatively, clamp meter must find two measurement points when measuring, and this is not as convenient as test pen.

[0005] Based on this, the present technology mainly has the problems of single function and non-contact and contact detection incompatible. INVENTION CONTENTS

[0006] The utility model aims at providing a kind of integrated clamp meter to solve the problem of single function and non-contact and contact detection incompatible in the above background technology.

[0007] To achieve the above object, the utility model provides the following technical scheme: a kind of integrated clamp meter, including upper cover, lower cover, button, button spring, probe, probe linkage block, iron core, probe spring, circuit board assembly, key switch and presser plate;

[0008] Upper cover and lower cover cooperate to form shell;

[0009] Iron core is installed between the U-shaped groove of the top of upper cover and lower cover;

[0010] One end of probe spring is welded on circuit board assembly, and circuit board assembly is locked on upper cover;

[0011] One end of probe is mutually set in the probe connecting hole of probe linkage block, and the other end is slidably installed in the probe sliding slot of upper cover;

[0012] Tail of the end of probe connected with probe linkage block is installed in probe spring, and probe linkage block is connected with lower cover by probe spring;

[0013] The button is arranged in the lower cover slot of the lower cover, and the button is connected with the probe linkage block, and the button is connected with the upper cover through the button spring;

[0014] The side wall of the probe linkage block is provided with a U-shaped guide sliding groove, and the button positioning column on the button moves in the guide sliding groove.

[0015] The pressing plate is attached to the lower cover.

[0016] 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.

[0017] Preferably, the probe linkage block side is provided with a rectangular body, the U-shaped guide sliding groove is provided with two parallel L-shaped grooves with a common bottom on the same side of the rectangular body, the vertical groove of the front L-shaped groove is a first limiting groove, the horizontal groove is a second limiting groove, the vertical groove of the rear L-shaped groove is a fourth limiting groove, and the horizontal groove is a third limiting groove.

[0018] Preferably, the button is provided with a button upper end face, a button boss, a button lower end face, a guide column and a button positioning column, the column body of the button is a rectangular body, the button upper end face and the button lower end face are respectively the front and back faces of the rectangular body, the side face of the rectangular body is provided with the button boss, the center of the side face of the button boss is provided with the button positioning column, and the center of the button lower end face extends outwardly and is provided with the guide column.

[0019] The button positioning column is switchably moved between the first limiting groove, the second limiting groove, the third limiting groove or the fourth limiting groove under the driving of the probe spring and the button spring.

[0020] Preferably, a thin-walled lower cover boss is arranged on the left side of the lower cover slot, a lower cover positioning slot with a shape matched with the button boss (1702) is arranged on the right side of the lower cover slot by two mirror-image L-shaped entities, and lower cover positioning columns (1604) and lower cover ribs are arranged on the upper and lower sides of the lower cover slot.

[0021] Preferably, the pressing plate is provided with a center positioning hole, the center of the button spring is provided with a guide hole, the guide hole is sleeved on the guide column, and the pressing plate is pressed above the button spring through the cooperation of the center positioning hole and the guide column.

[0022] Preferably, the shell surface of the upper cover is provided with two square grooves with different sizes and a round rectangular groove, the larger square groove is provided with a liquid crystal display, the smaller square groove is provided with a silica gel button, and the round rectangular groove is provided with a conductive silica gel button, and the silica gel button is provided with two buttons.

[0023] Preferably, when the key switch is in an open circuit state, the conductive silicone key and the silicone key are in a closed state, and when the key switch is in a closed state, the conductive silicone key and the silicone key are in an open circuit state.

[0024] Compared with the prior art, the utility model has the advantages that: the utility model discloses the conversion between the two modes of button control non-contact measurement and contact measurement, reduces the time of tool switching, and improves the operation convenience. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will introduce the drawings needed for the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0026] Figure 1 It is the overall parts explosion drawing of the utility model;

[0027] Figure 2 It is the probe linkage block and probe cooperation relationship structure schematic diagram of the utility model;

[0028] Figure 3 It is the local enlarged structure schematic diagram of the probe linkage block of the utility model;

[0029] Figure 4 It is the circuit board assembly parts explosion schematic diagram of the utility model;

[0030] Figure 5 It is the circuit board assembly structure schematic diagram of the utility model;

[0031] Figure 6 It is the lower cover after removing part explosion drawing of the utility model;

[0032] Figure 7 It is the local enlarged view of the probe linkage block and probe connection end surface of the utility model;

[0033] Figure 8 It is the local enlarged structure schematic diagram of the upper cover and probe connection of the utility model;

[0034] Figure 9 It is the structure schematic diagram of the utility model after removing the lower cover;

[0035] Figure 10is a front view of the utility model;

[0036] Figure 11 is an exploded view of the part after removing the upper cover of the utility model;

[0037] Figure 12 is a local enlarged view of position A in the exploded view of the part after removing the upper cover of the utility model;

[0038] Figure 13 is a local enlarged view of position B in the exploded view of the part after removing the upper cover of the utility model;

[0039] Figure 14 is a local enlarged view of position C in the exploded view of the part after removing the upper cover of the utility model;

[0040] Figure 15 is a schematic view of the structure of the utility model after removing the upper cover;

[0041] Figure 16 is a schematic view of the structure of the gear switching assembly of the utility model;

[0042] Figure 17 is a schematic view of the structure of the utility model after removing each component;

[0043] Figure 18 is a schematic view of the position relationship structure of the probe linkage block and the key switch of the utility model;

[0044] Figure 19 is a schematic view of the probe retraction process of the utility model;

[0045] Figure 20 is a schematic view of the probe extension process of the utility model;

[0046] Figure 21 is an AC current + NCV mode mode diagram of the utility model.

[0047] 1. Top cover; 101. Limiting rib; 102. Probe slide groove; 2. Probe; 201. Probe positioning post; 202. Probe rod; 3. Probe linkage block; 301. Probe connection hole; 302. Linkage block end face; 303. First limiting groove; 304. Linkage block side wall; 305. Second limiting groove; 306. Third limiting groove; 307. Fourth limiting groove; 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 silicon 11. Silicone Button; 12. Machine Screw; 13. Battery Cover; 14. Second Self-Tapping Screw; 15. Battery; 16. Lower Cover; 1601. Lower Cover Groove; 1602. Lower Cover Positioning Groove; 1603. Lower Cover Rib; 1604. Lower Cover Positioning Post; 1605. Lower Cover Rib; 17. Button; 1701. Upper Face of Button; 1702. Button Boss; 1703. Lower Face of Button; 1704. Guide Post; 1705. Button Positioning Post; 18. Button Spring; 1801. Guide Hole; 19. Self-Tapping Screw; 20. Pressure Plate; 2001. Pressure Plate Positioning Hole; 2002. Pressure Plate Flat Face; 2003. Center Positioning Hole. Detailed Implementation

[0048] 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.

[0049] One embodiment of this utility model:

[0050] 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 button 17, a button spring 18, and a pressure plate 20.

[0051] 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.

[0052] The upper cover 1 is provided with a U-shaped groove, two square grooves of different sizes and a rounded rectangular groove. The U-shaped groove is arranged at the top of the upper cover 1 and used for mounting the iron core 4. The two square grooves of different sizes and the rounded rectangular groove are arranged on the front surface of the upper cover 1. The larger square groove is used for mounting the liquid crystal display 5, the smaller square groove is used for mounting the conductive silica gel button 10, and the rounded rectangular groove is used for mounting the silica gel button 11. The silica gel button 11 is provided with two buttons.

[0053] 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 respectively provided with a probe positioning column 201 and a probe rod 202 at both ends. The probe linkage block 3 is respectively provided with a columnar body and a rectangular body at both sides. The columnar body is provided with a probe connecting hole 301 in the middle. The end face of the columnar body is a linkage block end face 302. The right side of the rectangular body is provided with a U-shaped guide groove. The U-shaped guide groove is composed of two parallel L-shaped grooves with a common bottom. The vertical groove of the front L-shaped groove is a first limiting groove 303, and the horizontal groove is a second limiting groove 305. The vertical groove of the rear L-shaped groove is a fourth limiting groove 307, and the horizontal groove is a third limiting groove 306. The outer wall of the fourth limiting groove 307 is a linkage block side wall 304. Meanwhile, the shapes of the first limiting groove 303, the second limiting groove 305, the third limiting groove 306 and the fourth limiting groove 307 are matched with the button positioning column 1705. The probe linkage block 3 is installed at a certain position of the probe 2 rod body according to the required depth of the probe 2 through the cooperation of the probe positioning column 201 and the probe connecting hole 301. Then, the probe positioning column 201 and the probe spring positioning hole 802 of the probe spring 8 are mutually sleeved. Subsequently, the probe rod 202 is placed in the probe sliding groove 102, and the probe 2 can slide along 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 by the first self-tapping screw 7, and 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. The button switch 9 is welded on the side adjacent to the probe spring 8 of the circuit board assembly 6.

[0054] The top of the lower cover 16 is provided with a U-shaped groove which cooperates with the U-shaped groove of the upper cover 1 to jointly accommodate the iron core 4; then a lower cover slot 1601 which is adapted to the shape of the button 17 is provided at the lower end of the U-shaped groove, a lower cover protrusion 1603 with a thin wall structure is arranged at the left side of the lower cover slot 1601, a lower cover positioning groove 1602 which is adapted to the shape of the button boss 1702 is arranged at the right side of the lower cover slot 1601, and a lower cover positioning column 1604 and a lower cover rib 1605 are arranged at the upper and lower sides of the lower cover slot 1601, and the lower cover positioning column 1604 is a smaller column, and the lower cover rib 1605 is a larger column; the bottom is provided with a battery compartment, wherein the battery compartment is used to install the battery 15, and the battery cover 13 is locked on the surface of the battery compartment by the machine screw 12, and in addition, the upper cover 1 and the lower cover 16 are locked by the second self-tapping screw 14.

[0055] The button 17 is provided with a button upper end face 1701, a button boss 1702, a button lower end face 1703, a guide column 1704 and a button positioning column 1705, the main body of the button 17 is a rectangular body, the button upper end face 1701 and the button lower end face 1703 are respectively the front and back faces of the rectangular body, a small rectangular body extends at the side of the rectangular body, which is the button boss 1702, then the button positioning column 1705 extends at the center of the side of the button boss 1702, and the guide column 1704 also extends outward at the center of the button lower end face 1703, wherein the button 17 is slidingly arranged in the lower cover slot 1601, at the same time, the button boss 1702 falls in the lower cover positioning groove 1602, the button upper end face 1701 is in contact with the lower cover protrusion 1603, and the guide column 1704 is in mutual sleeving with the guide hole 1801 at the center of the button spring 18. In addition, the button positioning column 1705 is clamped in the first limiting groove 303 of the probe linkage block 3, and is switchably clamped with the first limiting groove 303, the second limiting groove 305, the third limiting groove 306 and the fourth limiting groove 307 under the action of the button spring 18 and the probe spring 8.

[0056] The pressing plate 20 is provided with pressing plate positioning holes 2001 at the four corners and a center positioning hole 2003 at the center, the pressing plate positioning holes 2001 are aligned with the lower cover positioning columns 1604, and the pressing plate 20 is locked on the lower cover 16 by the self-tapping screw 19, at the same time, the pressing plate 20 is installed at the upper end of the button spring 18 and the center positioning hole 2003 is sleeved on the guide column 1704 of the button 17, at this time, the pressing plate plane 2002 of the pressing plate 20 is in contact with the lower cover rib 1605, and the button upper end face 1701 is in contact with the lower cover protrusion 1603 due to the action of the button spring 18.

[0057] When the AC current non-contact measurement mode is started, the voltage test mode needs to be closed. At this time, the handheld instrument, the probe 2 is pressed against the floor or wall, and the button positioning column 1705 is moved from the fourth limiting groove 307 of the probe linkage block 3 to the third limiting groove 306 of the probe linkage block 3; After that, continue to press the probe 2 against the floor or wall, and the button positioning column 1705 is moved from the third limiting groove 306 of the probe linkage block 3 to the second limiting groove 305 of the probe linkage block 3; At this time, the linkage block side wall 304 collides with the button boss 901 of the button switch 9, so that the button switch 9 is in a closed state; Then release the button 17, and the button positioning column 1705 is quickly bounced from the second limiting groove 305 of the probe linkage block 3 to the first limiting groove 303 of the probe linkage block 3 under the action of the button spring 18; At this time, the probe 2 is retracted into the shell, the button switch 9 is in a closed state, and the conductive silicone button 10 is in an open circuit state with the circuit board assembly 6; Then the handheld instrument is gradually close to the measured object for detection, if the measured object is charged, the liquid crystal display 5 of the instrument changes from green backlight to red, and then the measured object is placed in the instrument U-shaped groove, and then the liquid crystal display 5 displays the measured current value.

[0058] When the voltage test mode is started, the AC current non-contact measurement mode needs to be closed. At this time, press the button 17 inward, and the button positioning column 1705 is moved from the first limiting groove 303 of the probe linkage block 3 to the second limiting groove 305 of the probe linkage block 3, and then the probe linkage block 3 slides upward under the action of the probe spring 8; After that, the button positioning column 1705 is moved from the second limiting groove 305 of the probe linkage block 3 to the third limiting groove 306 of the probe linkage block 3, at this time, the linkage block side wall 304 is separated from the button boss 901 of the button switch 9, so that the button switch 9 is in an open circuit state; After that, release the button 17, and the button positioning column 1705 is quickly bounced from the third limiting groove 306 of the probe linkage block 3 to the fourth limiting groove 307 of the probe linkage block 3 under the action of the button spring 18. At this time, the probe 2 is exposed outside the shell, the button switch 9 is in an open circuit state, and the conductive silicone button 10 is in a closed state with the circuit board assembly 6; Then the handheld instrument, and press the conductive silicone button 10 with your hand, touch the probe 2 to the measured object, if the measured object is charged, the liquid crystal display 5 will display the measured voltage value.

[0059] 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 conjunction 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.

[0060] 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. An integrated clamp meter, characterized by: The utility model relates to a probe switch, including upper cover (1), lower cover (16), button (17), button spring (18), probe (2), probe linkage block (3), iron core (4), probe spring (8), circuit board assembly (6), key switch (9) and presser plate (20); The upper cover (1) cooperates with the lower cover (16) to form a shell; The iron core (4) is installed between the U-shaped grooves at the top of the upper cover (1) and the lower cover (16); The circuit board assembly (6) is locked on the upper cover (1); One end of the probe (2) is sleeved with the probe connecting hole (301) of the probe linkage block (3), and the other end is slidingly installed in the probe sliding groove (102) of the upper cover (1); The tail of the probe (2) connected with the probe linkage block (3) is installed in the probe spring (8), and the probe linkage block (3) is connected with the lower cover (16) through the probe spring (8); The button (17) is slidingly arranged in the lower cover groove (1601) of the lower cover (16), and the button (17) is connected with the probe linkage block (3); the button (17) is connected with the upper cover (1) through the button spring (18); The probe linkage block (3) is provided with a U-shaped guide sliding groove on the side wall, and the button positioning column (1705) on the button (17) moves in the guide sliding groove; The presser plate (20) is locked on the lower cover (16); 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. The integrated clamp meter of claim 1, wherein: The probe linkage block (3) is provided with a rectangular body on the side; the U-shaped guide sliding groove is provided with two parallel L-shaped grooves with a communicated bottom on the same side of the rectangular body; the vertical groove of the front L-shaped groove is a first limiting groove (303), the horizontal groove is a second limiting groove (305), the vertical groove of the rear L-shaped groove is a fourth limiting groove (307), and the horizontal groove is a third limiting groove (306).

3. An integrated clamp meter according to claim 2, wherein: The button (17) is provided with a button upper end face (1701), a button boss (1702), a button lower end face (1703), a guide column (1704) and a button positioning column (1705); the column body of the button (17) is a rectangular body; the button upper end face (1701) and the button lower end face (1703) are respectively the front and back faces of the rectangular body; the button boss (1702) is arranged on the side of the rectangular body; the button positioning column (1705) is arranged at the center of the side of the button boss (1702); the guide column (1704) is arranged at the center of the button lower end face (1703) and extends outward; The button positioning column (1705) is switchably moved between the first limiting groove (303), the second limiting groove (305), the third limiting groove (306) or the fourth limiting groove (307) under the driving of the probe spring (8) and the button spring (18).

4. An integrated clamp meter according to claim 3, wherein: A thin-walled lower cover protrusion (1603) is arranged on the left side of the lower cover slot (1601), and a lower cover positioning slot (1602) that is adapted to the shape of the button boss (1702) and surrounded by two mirror-imaged L-shaped entities is arranged on the right side of the lower cover slot (1601), and a lower cover positioning column (1604) and a lower cover rib (1605) are arranged on the upper and lower sides of the lower cover slot (1601).

5. The integrated clamp meter of claim 3, wherein: The pressing plate (20) is provided with a central positioning hole (2003), and the center of the button spring (18) is provided with a guide hole (1801) that is sleeved on the guide column (1704), and the pressing plate (20) is pressed above the button spring (18) through the cooperation of the central positioning hole (2003) and the guide column (1704).

6. The integrated clamp meter of claim 1, wherein: The shell surface of the upper cover (1) is provided with two square slots of different sizes and a round rectangular slot, wherein the larger square slot is provided with a liquid crystal display (5), the smaller square slot is provided with a silica gel button (11), and the round rectangular slot is provided with a conductive silica gel button (10), wherein the silica gel button (11) is provided with two buttons.

7. An integrated clamp meter according to claim 6, wherein: When the key switch (9) is in an open circuit state, the conductive silica gel button (10) and the silica gel button (11) are in a closed state, and when the key switch (9) is in a closed state, the conductive silica gel button (10) and the silica gel button (11) are in an open circuit state.

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