Portable arm type universal meter support

Abstract

The utility model relates to a portable arm-type universal meter support comprising a bottom plate which is of an arc-shaped structure; the wearing part is connected to the two sides of the bottom plate to form a surrounding form and is detachable; the rotating part is arranged at the top of the bottom plate; and the supporting part is used for supporting, clamping or releasing the universal meter, the bottom of the supporting part is provided with a shaft piece which is matched with the rotating part for rotation, and the universal meter can be rotated for reading. According to the utility model, the universal meter is fixed on the arm through the support, so that an operator can perform other operations by releasing both hands, and the convenience and flexibility of the operation are improved. An operator does not need to hold an instrument by hand, measurement operation can be carried out more easily, interference of external factors on measurement results is reduced, and stability and accuracy of measurement are improved. And the device can be flexibly applied to various scenes such as high-altitude operation, narrow space and vertical surface operation. The stability and fixity of the support increase the safety of the measuring process, and the body safety of operators is protected.

Description

Technical Field

[0001] This utility model relates to the field of multimeter support technology, and more specifically to a portable arm-type multimeter support. Background Technology

[0002] A multimeter is a portable instrument used to measure electrical quantities such as current, voltage, and resistance, and is widely used in fields such as electronic engineering, circuit measurement, power maintenance, and laboratories. However, in actual operation, traditional handheld multimeters present many inconveniences and safety hazards. When using a multimeter for measurement, the operator must simultaneously hold the device and use the probes, which not only increases the complexity of the operation but may also lead to unstable measurement results and reading errors. Especially when working at heights or in confined spaces, handheld multimeters are prone to being dropped, posing a serious safety risk.

[0003] Most multimeter holders on the market are designed for placement on horizontal desktops, limiting their applicability and making it difficult to meet the needs of special environments or specific workplaces. For example, when working at heights, operators need to fix the multimeter in a stable position to avoid measurement errors or equipment drops due to unsteady hand movements. However, existing holder designs cannot provide this flexibility and stability.

[0004] Therefore, there is an urgent need for a bracket that can be fixed to the human arm, so that operators can easily use a multimeter to make measurements and read accurate values, thereby improving the safety and convenience of operation. Utility Model Content

[0005] Therefore, the purpose of this utility model is to propose a solution to the problem that existing multimeter holders cannot be used in special environments or specific workplaces.

[0006] The present invention relates to a portable arm-type multimeter stand, comprising:

[0007] The base plate has an arc-shaped structure;

[0008] The wearing part is connected to both sides of the base plate to form a wraparound shape and is detachable;

[0009] A rotating part is disposed on the top of the base plate;

[0010] The support section supports, clamps, or releases the multimeter, and its bottom has a shaft that rotates in conjunction with the rotating section, enabling the multimeter to be rotated for reading.

[0011] According to the bracket of this utility model, the base plate has connecting areas on both sides, each connecting area is connected to a fixing strap, and the ends of the two fixing straps away from the base plate are provided with a pair of adhesive pieces, the fixing straps and the adhesive pieces forming the wearing part.

[0012] According to the bracket of the utility model, the wearing part further includes an arm protection sponge pad inside the bottom plate.

[0013] According to the bracket of the utility model, the rotating part includes:

[0014] A limiting slot is arranged on the top of the bottom plate, and a rotating hole of the shaft is formed inside the limiting slot, and a plurality of clamping slots are arranged on the outer circumference in a ring shape;

[0015] A rolling bearing is arranged inside the rotating hole and is sleeved with the shaft.

[0016] According to the bracket of the utility model, the supporting part includes:

[0017] A supporting seat is provided with a shaft at the bottom, and the two sides are provided with oppositely arranged clamping arms.

[0018] A clamping arm locking part is arranged on the supporting seat, and the clamping arm locking part can automatically lock the clamping arms on the two sides.

[0019] A clamping arm unlocking part is arranged inside the supporting seat, and the corresponding two force applying parts extend to the two sides of the supporting seat, and the clamping arms on the two sides can be released by pressing.

[0020] A rotating shaft locking part is arranged on the supporting seat and is located in the same plane as the shaft, and the rotating shaft locking part can drive a locking block arranged on the supporting seat to lock or unlock the rotating state of the supporting seat and the bottom plate.

[0021] According to the bracket of the utility model, the rear side of the supporting seat is further provided with a supporting plate, the supporting plate includes a first sliding plate extending into the inside of the supporting seat, and two first clamping plates perpendicular to the first sliding plate and limiting the multimeter; the first sliding plate is connected with the fixed column through the first reset spring.

[0022] According to the bracket of the utility model, a sliding groove is arranged on the sliding position of the locking block relative to the top plate of the supporting seat, and the rotating shaft locking part includes:

[0023] A lever is slidably arranged in the sliding groove, and one end of the lever can extend out of the sliding groove;

[0024] A spring is sleeved on the lever, the sliding groove is provided with a spring limiting block, one end of the lever away from the spring is connected with the locking block, and the spring is compressed or released by pushing and pulling the lever, so that the locking block is inserted into or separated from the corresponding clamping slot.

[0025] According to the bracket of the utility model, the clamping arm includes a second sliding plate extending into the inside of the supporting seat, and a second clamping plate perpendicular to the second sliding plate and limiting the multimeter; the second sliding plate is connected with the fixed column through the second reset spring.

[0026] According to the bracket of the utility model, the clamping arm unlocking part includes two groups arranged oppositely, and each group includes:

[0027] The third sliding plate is inserted into the support base, and the outer part is connected with the force applying part;

[0028] The gear is located between the third sliding plate and the second sliding plate on the same side of the support base, and the opposite sides of the third sliding plate and the second sliding plate are provided with tooth-shaped structures engaged with the gear; the thickness of the gear is more than twice the thickness of the third sliding plate;

[0029] The corrugated plate is fixed on the bottom wall or the side wall of the support base, and the inner bottom part of the third sliding plate is provided with a protruding part matched with the corrugated plate; when the force applying part is pressed inward, the protruding part of the third sliding plate moves step by step through the corrugated plate, and the opening distance of the second clamping plate is adjusted through the gear.

[0030] According to the bracket of the utility model, the clamping arm locking part includes:

[0031] The button is arranged in the support base and contacts the multimeter through the top plate of the support base;

[0032] The reset lever is a V-shaped lever structure, one end of which is connected with the button, and the other end is connected with the horizontal rod, and the horizontal rod is connected with the bottom parts of the third sliding plates on both sides; the back part of the multimeter contacts the button to trigger the reset lever, and the horizontal rod pushes up the two third sliding plates to be separated from the corrugated plate.

[0033] Compared with the prior art, the technical scheme has the beneficial effects that:

[0034] The utility model solves the technical problems of the traditional handheld multimeter in the operation convenience, measurement stability and applicability, specifically:

[0035] The utility model discloses a multimeter is fixed on the arm through the bracket, so that the operator can release both hands to carry out other operation, improve the convenience and flexibility of operation. The operator does not need to hold the instrument, and can carry out measurement operation more easily.

[0036] The utility model discloses a multimeter is fixed on the arm through the bracket, so that the operator can release both hands to carry out other operation, improve the convenience and flexibility of operation. The operator does not need to hold the instrument, and can carry out measurement operation more easily.

[0037] The ordinary universal meter support in the market is generally only applicable to be placed on a horizontal desktop, and the use scene is single. The arm type universal meter support considers the needs of special environment and specific work place, and can be flexibly applied to various scenes such as high-altitude operation, narrow space and vertical surface operation. A wider application range is provided, and the measurement needs in different working environments are met. Meanwhile, the arm type universal meter support can be applied to different models of universal meters.

[0038] Safety, there is a safety risk in using a handheld universal meter to measure in a special environment such as high-altitude operation. The arm type universal meter support fixes the instrument on the arm, reduces the accidental risk caused by unstable hand movement of the operator, and increases the safety of the measurement process, thereby protecting the physical safety of the operator. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0040] Figure 1 A structure diagram of the portable arm type universal meter support provided by the present application is shown.

[0041] Figure 2 An exploded view of the portable arm type universal meter support provided by the present application is shown.

[0042] Figure 3 A schematic diagram of the wearing part and the rotating part is shown.

[0043] Figure 4 A schematic diagram of the top surface of the supporting part is shown.

[0044] Figure 5 A schematic diagram of the back surface of the supporting part is shown.

[0045] Figure 6 A structure diagram of one embodiment of the clamping arm locking part and the clamping arm unlocking part inside the supporting seat is shown. DETAILED DESCRIPTION

[0046] The embodiments of the present application will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0047] In the description of the utility model, it needs to be understood that the orientation or position relation indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relation shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0048] At present, most of the design of the universal meter support on the market is applicable to be placed on a horizontal desktop, and the applicability is relatively limited, and it is difficult to meet the needs of special environments or specific workplaces. For example, when operating at a high altitude, the operator needs to fix the universal meter in a stable position to avoid measurement errors or equipment falling caused by unstable hand movements. The existing support design cannot provide such flexibility and stability.

[0049] In view of this, the technical scheme of the utility model is a portable arm type universal meter support, referring to the drawings Figures 1-5 , comprising:

[0050] The bottom plate 5 is of an arc structure, providing a connection and support base;

[0051] The wearing part is used for firmly fixing the support on the arm of the user, is connected to both sides of the bottom plate 5 to form a surrounding form, and is detachable;

[0052] The rotating part is arranged at the top of the bottom plate 5;

[0053] The support part supports, clamps or releases the universal meter, and the bottom part has a shaft member matched with the rotating part for rotating, so that the universal meter can be rotated for reading.

[0054] The above embodiment, when the universal meter is used in a special environment or a specific workplace, the universal meter is installed on the support part, the angle of the support part and the bottom plate is rotated, reading is facilitated, the support and the universal meter are worn on the arm through the wearing part, so that the operator can release both hands to perform other operations, and the convenience and flexibility of operation are improved. The operator does not need to hold the instrument, and can more easily perform measurement operations, meeting the use needs in special environments or specific workplaces.

[0055] Advantageously, referring to the drawings Figure 3The bottom plate 5 is provided with a connecting area on both sides, and each connecting area is connected with a fixed band 6, and the ends of the two fixed bands 6 away from the bottom plate 5 are provided with a pair of adhesive pieces 1, and the fixed band 6 and the adhesive piece 1 form a wearing part. Wherein, the adhesive piece 1 is one of magic tape, hook and loop fastener and magnetic buckle, and is a one-to-two matching structure for easy wearing. Of course, in order to meet the needs of people with different arm circumference, the corresponding structure of the one or two can be lengthened, and different arm circumference can be generally adapted.

[0056] In the embodiment of the utility model, in order to improve the comfort of wearing, the wearing part further includes an arm protection sponge pad 2 located inside the bottom plate 5. The arm protection sponge pad 2 is attached to the arm, providing a comfortable wearing experience, preventing discomfort caused by long-term use, and ensuring that the support is stable and comfortable during use.

[0057] Referring to the accompanying drawings Figure 3 The rotating part enables the support part and the bottom plate to rotate freely, facilitating the user to adjust the angle of the multimeter for reading the measurement result, comprising:

[0058] The limiting clamping groove 3 is used for limiting the rotation range of the support part to prevent instability caused by excessive rotation, is located at the top of the bottom plate 5, and has a plurality of clamping grooves arranged in a ring on the outer circumference and a rotating hole matched with the shaft.

[0059] The rolling bearing 4 is located in the rotating hole and is sleeved with the shaft, so that the support part can rotate smoothly relative to the bottom plate. Through this design, the user can easily adjust the angle of the support to obtain the best reading angle.

[0060] Referring to the accompanying drawings Figure 4 And 5 The support part provides a stable structural basis for the multimeter, comprising:

[0061] The support seat 13 is provided with a shaft at the bottom and has oppositely arranged clamping arms on both sides.

[0062] The clamping arm locking part 9 is used for automatically locking the clamping arms on both sides when the multimeter is installed on the support seat 13 and contacts the clamping arm locking part. When the multimeter is placed in place, the clamping arm locking part will automatically lock the clamping arms to ensure that the multimeter is stable and does not move. The first clamping arm 8 and the second clamping arm 11 are respectively located on both sides of the multimeter, and the clamping arm locking part is used for clamping the multimeter to provide firm fixation.

[0063] The clamping arm unlocking part 12 is located in the support seat 13, and the corresponding two force applying parts 122 extend to both sides of the support seat 13, and pressing can release the clamping arms on both sides to facilitate the installation and disassembly of the multimeter.

[0064] The support seat 13 is further provided with a supporting plate 7, as shown in the accompanying drawingsFigure 6 The supporting base 13 comprises a first sliding plate 71 extending into the supporting base 13 and a first clamping plate 72 perpendicular to the first sliding plate 71 and used for limiting the multimeter. The first sliding plate 71 is connected with the fixed column 18 through a first reset spring 1.

[0065] The first clamping arm 8 and the second clamping arm 11 have the same structure. Taking the second clamping arm 11 as an example, the second clamping arm 11 comprises a second sliding plate 111 extending into the supporting base 13 and a second clamping plate 112 perpendicular to the second sliding plate 111 and used for limiting the multimeter. The second sliding plate 111 is connected with the fixed column 20 through a second reset spring 21.

[0066] The clamping arm locking part 9 and the clamping arm unlocking part 12 can be realized by using the prior art.

[0067] The clamping arm locking part 9 and the clamping arm unlocking part 12 can also be realized by using the following method. For details, please refer to the accompanying drawings. Figure 6 .

[0068] The clamping arm unlocking part 12 is composed of two groups of opposite third sliding plates 121 and force applying parts 122 arranged at the outer ends of the third sliding plates 121. A gear 22 is arranged between the third sliding plates 121 and the second sliding plates 111 on the same side of the supporting base 13. The opposite sides of the third sliding plates 121 and the second sliding plates 111 are provided with teeth and are engaged with the gear 22.

[0069] The inner side bottom protruding part of the third sliding plate 121 is matched with a corrugated plate 23 in a zigzag shape. The corrugated plate 23 is fixed on the bottom wall or the side wall of the supporting base 13. When the force applying part 122 is pressed inward, the third sliding plate 121 realizes step-by-step action through the corrugated plate 23, and the opening distance of the second clamping plate 112 is adjusted through the gear 22, so as to prepare for fixing multimeters of different sizes.

[0070] The clamping arm locking part 9 comprises:

[0071] A button arranged in the supporting base 13 and protruding out of the top plate of the supporting base 13 to contact the multimeter;

[0072] A reset lever 24 in a V-shaped lever structure, one end of which is connected with the button and the other end of which is connected with a horizontal rod, the horizontal rod being connected with the bottoms of the third sliding plates 121 on both sides. The back of the multimeter touches the button to trigger the reset lever 24, and the horizontal rod pushes up the two third sliding plates 121 to be out of contact with the corrugated plate 23.

[0073] When the multimeter is placed on the support base 13, the back of the multimeter touches the button, triggers one end of the reset rod 24, the other end of the reset rod 24 is lifted, the third sliding plate 121 is lifted by the horizontal rod, the third sliding plate 121 is separated from the corrugated plate 23, and the second clamping plate 112 is fixed on the multimeter under the action of the second reset spring 21; when the back of the multimeter is away from the button, the reset rod 24 is reset, and the third sliding plate 121 is in contact with the corrugated plate 23, wherein the width of the gear 22 is at least twice the thickness of the third sliding plate 121.

[0074] The first clamping arm 8 has the same action principle as the second clamping arm 11.

[0075] The rotation shaft locking part 10 is located on the support base 13 and is in the same plane as the shaft, can drive the locking block 17 located at the bottom of the support base 13, and locks or unlocks the rotation state of the support base 13 and the bottom plate 5. The rotation shaft locking part 10 realizes the locking or unlocking of the rotation state of the support through the control of the locking block 17 of the rotation part. The user rotates the rotation shaft locking part 10 to make the locking block slide, unlock the support, and realize free rotation; when adjusted to a suitable position, the rotation shaft locking part 10 is released, the locking block 17 is returned to the original position and fixed in the clamping groove, and the position of the support is stable.

[0076] In the embodiment of the utility model, the support base 13 rear part still has the supporting plate 7, and the first clamping arm 8 and the second clamping arm 11 jointly clamp the multimeter, so that the clamping stability is improved.

[0077] In addition, the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0078] In the utility model, the bottom of the support base 13 is provided with a sliding groove relative to the sliding position of the locking block 17, and the rotation shaft locking part 10 comprises:

[0079] The dial lever 15 is slid in the sliding groove, and one end thereof can extend out of the sliding groove;

[0080] The spring 14 is sleeved on the dial lever 15, the sliding groove has a spring limiting block 16, one end of the dial lever 15 away from the spring 14 is connected with the locking block 17, the dial lever 15 is pushed and pulled to compress or release the spring 14, and the locking block 17 is inserted or separated from the corresponding clamping groove.

[0081] In the utility model, unless another definite provision and limitation, the terms "mount", "connect", "fix", and other terms should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be direct connection, also can be indirectly connected through intermediate medium, for ordinary skill in the art, can understand the concrete meaning of the above terms in the utility model according to specific circumstances.

[0082] The specific steps of using the utility model are as follows: first, the user fixes the adhesive 1 at the bottom of the support on the arm, ensures that the support is firmly connected on the arm. Then, press the clamping arm unlocking part 12 to make the clamping arm unfold, and prepare for placing the multimeter. Place the multimeter into the support, press the button at the bottom, make the clamping arms on both sides return to position and lock the multimeter, and ensure that it is firmly clamped. In order to realize the rotation of the support, the user can turn the shaft locking part 10 to make the locking block 17 slide, unlock the support, and freely adjust to the required position. When the support is rotated to the position convenient for reading, release the shaft locking part 10 to make the locking block 17 return to position and be fixed in the clamping groove, keep the support stable. At this time, the user can use the meter pen to measure and accurately read the measurement result.

[0083] The utility model is used for special environment or specific workplace, such as high-altitude operation, narrow space, vertical surface operation and laboratory and electronic engineering field fixed multimeter on the arm to carry out the support of electric parameter measurement.

[0084] High-altitude operation refers to the maintenance, installation or detection work at high place, and the operator can use the support to fix the multimeter on the arm, so as to avoid the safety risk caused by the falling of handheld measurement multimeter. The stability and fixity of the support make the measurement process more safe and reliable.

[0085] Narrow space refers to the narrow working space, and the operator can not freely use both hands to measure. Using the support can fix the multimeter on the arm, release both hands to carry out other operations, improve the work efficiency and ensure the accuracy of measurement.

[0086] Vertical surface operation, ordinary multimeter support is usually only applicable to horizontal desktop, and when measuring on the vertical surface, the conventional support cannot provide a suitable fixing position. The portable arm type multimeter support is fixed on the arm through the magic tape and other bonding structures, and the angle and position of the support can be flexibly adjusted, which is convenient for the operator to measure on the vertical surface.

[0087] The utility model still can be used for laboratory and electronic engineering field, and the support is applicable to circuit measurement, power maintenance and other electrical quantity measurement in laboratory and electronic engineering field. The operator can place the multimeter into the support, and fixes it firmly through the clamping arm locking part, so that stable and accurate measurement is realized. The use of multimeters of different specifications is satisfied.

[0088] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the present 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. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification.

[0089] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and those skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model.

Claims

1. A portable arm-type multimeter stand, characterized by, The utility model relates to a multifunctional meter support, including: The bottom plate (5) is arc structure; Wearing part, is connected in the two sides of bottom plate (5) and forms the form of surrounding, and can be dismantled; Rotary part, is located in the top of bottom plate (5); Supporting part, support, clamp or release multimeter, its bottom has with rotary part cooperation rotation axle spare, can rotate multimeter and carry out reading.

2. A portable arm-type multimeter stand according to claim 1, characterized in that, The bottom plate (5) both sides are provided with connecting area, each connecting area is connected with fixed band (6), and the end of two fixed band (6) away from bottom plate (5) is provided with a pair of adhesive member (1), and fixed band (6) and adhesive member (1) constitute wearing part.

3. A portable arm-type multimeter stand according to claim 2, characterized in that The wearing part further includes arm protection sponge pad (2) inside bottom plate (5).

4. The portable arm-type multimeter stand according to claim 1, wherein The rotary part includes: Limiting slot (3), located in the top of bottom plate (5), its inside forms with the rotary hole of axle spare, and the outer circumference is arranged with multiple clamping slots in ring direction; Rolling bearing (4), located in the rotary hole, and with axle spare sleeve joint.

5. A portable arm-type multimeter stand according to claim 4, wherein The supporting part includes: Supporting seat (13), bottom is provided with axle spare, both sides have oppositely arranged clamping arm; Clamping arm locking portion (9), multimeter is installed on supporting seat (13), and contact clamping arm locking portion (9) can automatically lock both sides clamping arm; Clamping arm unlocking portion (12), located in supporting seat (13), its corresponding two force applying portions (122) extend to both sides of supporting seat (13), and pressing can release both sides clamping arm; Rotating shaft locking portion (10), located on supporting seat (13) and with axle spare in the same plane, can drive locking block (17) located on supporting seat (13), and lock or unlock the rotary state of supporting seat (13) and bottom plate (5).

6. A portable arm-type multimeter stand according to claim 5, wherein The rear side of supporting seat (13) further has supporting plate (7), and the supporting plate (7) includes first sliding plate (71) extending into the inside of supporting seat (13), and two first clamping plates (72) perpendicular to the first sliding plate (71) and limiting multimeter;The first sliding plate (71) is connected with fixed column through first return spring (19).

7. A portable arm-type multimeter stand according to claim 5, wherein The top plate of supporting seat (13) is provided with a sliding groove in the sliding position of locking block (17), and the rotating shaft locking portion (10) includes: Dial lever (15), sliding in sliding groove, one end can extend out of the sliding groove; Spring (14), sleeve set on dial lever (15), sliding groove has spring limiting block (16), one end of dial lever (15) away from spring (14) is connected with locking block (17), and pushing and pulling dial lever (15) compresses or releases spring (14), so that locking block (17) inserts or leaves corresponding clamping slot.

8. A portable arm-type multimeter stand according to claim 5, wherein The clamping arm includes second sliding plate (111) extending into the inside of supporting seat (13), and second clamping plate (112) perpendicular to the second sliding plate (111) and limiting multimeter;The second sliding plate (111) is connected with fixed column (20) through second return spring (21).

9. A portable arm-type multimeter stand according to claim 8, characterized in that, The clamping arm unlocking portion (12) includes two groups of oppositely arranged, and each group includes: The third slide plate (121) extends into the support base (13) and is externally connected to the force applying part (122); A gear (22) is located between the third slide plate (121) and the second slide plate (111) on the same side of the support base (13), and the third slide plate (121) and the second slide plate (111) are provided with toothed structures on the opposite sides and engage with the gear (22); the thickness of the gear (22) is more than twice the thickness of the third slide plate (121); A corrugated plate (23) is fixed to the bottom wall or side wall of the support base (13), and the inner bottom of the third slide plate (121) is provided with a protruding part matched with the corrugated plate (23); when the force applying part (122) is pressed inward, the protruding part of the third slide plate (121) moves step by step through the corrugated plate (23), and the opening distance of the second clamping plate (112) is adjusted through the gear (22).

10. A portable arm-type multimeter stand according to claim 9, characterized in that, The clamping arm locking part (9) comprises: A button is arranged in the support base (13) and protrudes through the top plate of the support base (13) to contact the multimeter; A reset lever (24) is a V-shaped lever structure, one end of which is connected to the button and the other end is connected to a crossbar, and the crossbar is connected to the bottoms of the two third slide plates (121) on both sides; the back of the multimeter touches the button to trigger the reset lever (24), and the crossbar pushes up the two third slide plates (121) to disengage from the corrugated plate (23).

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