Digital multimeter with dustproof and moistureproof protection structure

Abstract

The utility model relates to the technical field of digital multimeters, in particular to a digital multimeter with a dustproof and moistureproof protection structure, which comprises a multimeter body, a shielding groove, a positioning through groove, a shielding plate, a positioning seat and a positioning mechanism, a shielding groove is formed in the side wall of the slot, the positioning through groove is formed in the side wall of the shielding groove, the shielding plate is arranged in the shielding groove in a sliding mode, the positioning seat is fixedly arranged on the shielding plate, the positioning seat penetrates through the positioning through groove and extends out of the universal meter body, and the positioning mechanism is arranged between the positioning seat and the side wall of the positioning through groove. The shielding plate is used for positioning between the positioning seat and the side wall of the positioning through groove, a supporting spring is fixedly arranged between the groove bottom of the shielding groove and the shielding plate, and by means of the technical scheme, the problem that the dustproof and waterproof effects of the meter pen inserting hole in the digital universal meter are low in the related technology is solved.

Description

Technical Field

[0001] This utility model relates to the field of digital multimeter technology, specifically to a digital multimeter with a dustproof and moisture-proof protective structure. Background Technology

[0002] A digital multimeter is a multi-purpose electronic measuring instrument mainly used to measure electrical parameters such as voltage, current and resistance. It usually includes functions such as ammeter, voltmeter and ohmmeter, and is sometimes called a multimeter, multimeter, multi-meter or three-way meter.

[0003] The probe jacks of current digital multimeters are exposed to the air, making them susceptible to dust clogging. Furthermore, water may enter the probe jacks unexpectedly, damaging the multimeter.

[0004] To facilitate the protection of the multimeter probe jacks, a search revealed a utility model patent with publication number CN212180879U, which discloses a waterproof and dustproof multimeter. The multimeter includes a body with probe jacks and a rotary knob on its front. A cover plate is rotatably mounted on the front of the body, with its rotation axis perpendicular to the front of the body. The cover plate can rotate to a position that covers the probe jacks. A pressing component is fixedly mounted on the rotary knob. When the knob is rotated, the pressing component does not cover the probe jacks. When the knob is rotated to the reset position, the pressing component presses down on the cover plate that was covering the probe jacks. This design effectively protects the multimeter, preventing dust from clogging the probe jacks or water from entering.

[0005] However, in the use of the above-mentioned existing technology, the shield is prone to displacement due to accidental contact, which affects the shield's protective effect on the probe socket. Utility Model Content

[0006] This invention proposes a digital multimeter with a dustproof and moisture-proof protective structure, which solves the problem of low dustproof and waterproof performance of the probe jacks in related technologies.

[0007] The technical solution of this utility model is as follows: A digital multimeter with a dustproof and moisture-proof protective structure includes a multimeter body, a slot on the multimeter body, a probe insertion hole at the bottom of the slot, a shielding groove, a positioning through groove, a shielding plate, a positioning seat, and a positioning mechanism. The shielding groove is formed on the side wall of the slot, the positioning through groove is formed on the side wall of the shielding groove, the shielding plate is slidably disposed in the shielding groove, the positioning seat is fixedly disposed on the shielding plate, the positioning seat extends through the positioning through groove and out of the multimeter body, and the positioning mechanism is disposed between the positioning seat and the side wall of the positioning through groove for positioning the positioning seat and the side wall of the positioning through groove.

[0008] Preferably, the positioning mechanism includes:

[0009] The positioning groove is provided on both of the opposite side walls of the positioning through groove;

[0010] A positioning port, wherein the positioning port is disposed through the positioning base;

[0011] Two positioning blocks are slidably disposed within the positioning port;

[0012] A position adjustment mechanism is disposed within the positioning seat and is used to adjust the position of the two positioning blocks.

[0013] Furthermore, a positioning spring is fixedly provided between the two positioning blocks.

[0014] Furthermore, the position adjustment mechanism includes:

[0015] A first cavity is formed within the positioning seat and is connected to the positioning port.

[0016] A positioning cover, wherein the positioning cover is cylindrical and is rotatably disposed within the first cavity;

[0017] An adjustment mechanism is provided between the positioning cover and the positioning block, and is used to adjust the position of the positioning block.

[0018] Furthermore, the adjustment mechanism includes:

[0019] An adjusting column is fixedly mounted on the positioning block and extends into the positioning cover;

[0020] Two arc-shaped blocks are fixedly installed on the inner wall of the positioning cover, and the arc-shaped blocks are in contact with the side wall of the adjusting column;

[0021] A drive mechanism is provided on the positioning seat and is used to drive the positioning cover to rotate.

[0022] Based on the above solution, the drive mechanism includes:

[0023] The handwheel is rotatably mounted on the positioning seat;

[0024] A drive rod is fixedly disposed between the handwheel and the positioning cover.

[0025] Based on the above scheme, a stop block is fixedly provided on the side wall of the arc-shaped block.

[0026] Based on the above scheme, a support spring is fixedly installed between the bottom of the shielding groove and the shielding plate.

[0027] Based on the above scheme, a sealing gasket is fixedly installed on the side wall of the shield.

[0028] Based on the above scheme, the handwheel sidewall is provided with anti-slip texture.

[0029] The working principle and beneficial effects of this utility model are as follows:

[0030] 1. In this utility model, by setting up a baffle plate and a positioning seat, after the multimeter body is used up, the baffle plate can move under the action of the support spring, thereby covering and sealing the slot through the baffle plate, thus facilitating the dustproof and waterproofing of the probe insertion hole.

[0031] 2. In this utility model, by setting up a positioning mechanism, one end of the positioning block can protrude from the positioning port under the elastic force of the positioning spring, and then the positioning seat and the baffle plate can be positioned by the cooperation of the positioning port and the positioning groove.

[0032] 3. In this utility model, by setting up a position adjustment mechanism, the rotation of the handwheel can drive the drive rod and the positioning cover to rotate. At the same time, the pressure of the arc block on the adjustment column can drive the positioning blocks to move closer to each other, thereby causing the positioning blocks to retract into the positioning opening, which facilitates the adjustment of the position of the positioning seat and the baffle.

[0033] 4. In this utility model, by setting up the shielding groove, positioning through groove, shielding plate, positioning seat and positioning mechanism, it is convenient to shield and seal the slot by cooperating with the side wall of the slot, thereby solving the problem of low dustproof and waterproof effect of the probe jack on digital multimeters in related technologies. Attached Figure Description

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0035] Figure 1 This is a schematic diagram of the structure of this utility model;

[0036] Figure 2 This is a schematic diagram of the structure of this utility model under the obstruction state;

[0037] Figure 3 This is a cross-sectional view of the shielding plate of this utility model;

[0038] Figure 4 This is a cross-sectional view of the positioning mechanism of this utility model;

[0039] Figure 5 This is a schematic diagram of the position adjustment mechanism of this utility model.

[0040] In the diagram: 1. Multimeter body; 2. Slot; 3. Probe jack; 4. Cover slot; 5. Positioning through slot; 6. Cover plate; 7. Positioning seat; 8. Positioning slot; 9. Positioning block; 10. Positioning spring; 11. Positioning cover; 12. Adjusting column; 13. Arc block; 14. Handwheel; 15. Drive rod; 16. Stop block. Detailed Implementation

[0041] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. 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 of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0042] like Figures 1-5 As shown, this embodiment proposes a digital multimeter with a dustproof and moisture-proof protective structure, including a multimeter body 1, a slot 2 on the multimeter body 1, a probe insertion hole 3 at the bottom of the slot 2, a shielding groove 4, a positioning through groove 5, a shielding plate 6, a positioning seat 7, and a positioning mechanism. The shielding groove 4 is formed on the side wall of the slot 2, the positioning through groove 5 is formed on the side wall of the shielding groove 4, the shielding plate 6 is slidably disposed in the shielding groove 4, the positioning seat 7 is fixedly disposed on the shielding plate 6, and the positioning seat 7 extends out of the multimeter body 1 through the positioning through groove 5. The positioning mechanism is disposed between the positioning seat 7 and the side wall of the positioning through groove 5 for positioning the positioning seat 7 and the side wall of the positioning through groove 5. A support spring is fixedly disposed between the bottom of the shielding groove 4 and the shielding plate 6. After the multimeter body 1 is used up, the shielding plate 6 can move under the action of the support spring, thereby shielding and sealing the slot 2, thus facilitating dustproof and waterproof protection of the probe insertion hole 3.

[0043] Reference Figures 3-5The positioning mechanism includes a positioning groove 8, a positioning port, a positioning block 9, and a position adjustment mechanism. Multiple positioning grooves 8 are provided on the two opposite side walls of the positioning through groove 5. The positioning port is provided through the positioning seat 7. Two positioning blocks 9 are slidably arranged in the positioning port. The position adjustment mechanism is arranged in the positioning seat 7 and is used to adjust the position of the two positioning blocks 9. A positioning spring 10 is fixedly arranged between the two positioning blocks 9. One end of the positioning block 9 can protrude from the positioning port under the elastic force of the positioning spring 10. Thus, the positioning seat 7 and the baffle plate 6 can be positioned by the cooperation of the positioning port and the positioning groove 8.

[0044] Reference Figure 4 and Figure 5 The position adjustment mechanism includes a first cavity, a positioning cover 11, and an adjustment mechanism. The first cavity is located within the positioning seat 7 and communicates with the positioning port. The positioning cover 11 is cylindrical and rotatably mounted within the first cavity. The adjustment mechanism is located between the positioning cover 11 and the positioning block 9 and is used to adjust the position of the positioning block 9. The adjustment mechanism includes an adjustment column 12, an arc-shaped block 13, and a drive mechanism. The adjustment column 12 is fixedly mounted on the positioning block 9 and extends into the positioning cover 11. Two arc-shaped blocks 13 are fixedly mounted on the inner wall of the positioning cover 11, and the arc-shaped blocks 13 contact the side wall of the adjustment column 12. The drive mechanism is mounted on the positioning seat 7. The driving mechanism for rotating the positioning cover 11 includes a handwheel 14 and a drive rod 15. The handwheel 14 is rotatably mounted on the positioning seat 7, and the drive rod 15 is fixedly mounted between the handwheel 14 and the positioning cover 11. A stop block 16 is fixedly mounted on the side wall of the arc-shaped block 13, and a sealing gasket is fixedly mounted on the side wall of the baffle plate 6. The side wall of the handwheel 14 is provided with anti-slip texture. The rotation of the handwheel 14 can drive the drive rod 15 and the positioning cover 11 to rotate. At the same time, the pressure of the arc-shaped block 13 on the adjusting column 12 can drive the positioning block 9 to move closer to each other, thereby causing the positioning block 9 to retract into the positioning opening, which facilitates the adjustment of the position of the positioning seat 7 and the baffle plate 6.

[0045] In this embodiment, before using the multimeter body 1, the operator rotates the handwheel 14. The rotation of the handwheel 14 drives the drive rod 15 and the positioning cover 11 to rotate. Simultaneously, the arc-shaped block 13 presses against the adjusting column 12, causing the positioning blocks 9 to move closer together, thus retracting them into the positioning opening. Then, the operator pushes the handwheel 14, causing the positioning seat 7 and the baffle plate 6 to move, retracting the baffle plate 6 into the baffle groove 4. Finally, the operator releases the handwheel 14. This causes the positioning block 9 to move under the action of the positioning spring 10, so that one end of the positioning block 9 extends into the positioning groove 8. The positioning block 9 and the positioning groove 8 cooperate to position the positioning seat 7 and the shield 6. Then, one end of the test probe can be inserted into the test probe socket 3 and the test probe can be used to test the circuit. After the test is completed, the operator reverses the above steps to reset the shield 6. The shield 6 can block and seal the slot 2, thereby achieving dustproof and waterproof protection for the test probe socket 3.

[0046] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A digital multimeter with dustproof and moistureproof protection structure, comprising a multimeter body (1), a slot (2) is formed on the multimeter body (1), a slot bottom of the slot (2) is provided with a test lead insertion hole (3), characterized in that, Also include: The side wall of the insertion slot (2) is provided with a shielding slot (4); The positioning through slot (5) is provided on the side wall of the shielding slot (4); The shielding plate (6) is slidingly arranged in the shielding slot (4); The positioning seat (7) is fixedly arranged on the shielding plate (6), and the positioning seat (7) penetrates through the positioning through slot (5) and extends out of the multimeter body (1); The positioning mechanism is arranged between the positioning seat (7) and the side wall of the positioning through slot (5), and is used for positioning between the positioning seat (7) and the side wall of the positioning through slot (5).

2. The digital multimeter with dustproof and moistureproof protection structure according to claim 1, characterized in that, The positioning mechanism comprises: The positioning slot (8) is provided on the opposite side wall of the positioning through slot (5); The positioning port is provided on the positioning seat (7); The positioning block (9) is slidingly arranged in the positioning port; The position adjusting mechanism is arranged in the positioning seat (7), and is used for adjusting the position of the two positioning blocks (9).

3. The digital multimeter with dustproof and moistureproof protection structure according to claim 2, characterized in that, The positioning spring (10) is fixedly arranged between the two positioning blocks (9).

4. The digital multimeter with dustproof and moistureproof protection structure according to claim 3, characterized in that, The position adjusting mechanism comprises: The first cavity is arranged in the positioning seat (7), and the first cavity is communicated with the positioning port; The positioning cover (11) is arranged in a cylindrical shape, and the positioning cover (11) is rotatably arranged in the first cavity; The adjusting mechanism is arranged between the positioning cover (11) and the positioning block (9), and is used for adjusting the position of the positioning block (9).

5. The digital multimeter with dustproof and moistureproof protection structure according to claim 4, characterized in that, The adjusting mechanism comprises: The adjusting column (12) is fixedly arranged on the positioning block (9), and the adjusting column (12) extends into the positioning cover (11); The arc block (13) is fixedly arranged on the inner wall of the positioning cover (11), and the arc block (13) is in contact with the side wall of the adjusting column (12); The driving mechanism is arranged on the positioning seat (7), and is used for driving the positioning cover (11) to rotate.

6. The digital multimeter with dustproof and moistureproof protection structure according to claim 5, characterized in that, The driving mechanism comprises: The hand wheel (14) is rotatably arranged on the positioning seat (7); The driving rod (15) is fixedly arranged between the hand wheel (14) and the positioning cover (11).

7. The digital multimeter with dustproof and moistureproof protection structure according to claim 6, characterized in that, The side wall of the arc block (13) is fixedly provided with a stop block (16).

8. The digital multimeter with dustproof and moistureproof protection structure according to claim 7, characterized in that, The support spring is fixedly arranged between the bottom of the shielding slot (4) and the shielding plate (6).

9. The digital multimeter with dustproof and moistureproof protection structure according to claim 8, characterized in that, The side wall of the shielding plate (6) is fixedly provided with a sealing gasket.

10. The digital multimeter with dustproof and moistureproof protection structure according to claim 9, characterized in that, The side wall of the hand wheel (14) is provided with anti-skid lines.

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