Direct-current socket K value measuring device used in cooperation with vernier caliper

Abstract

The utility model discloses a DC socket K value measuring device used in cooperation with a vernier caliper, and relates to the technical field of socket measurement, and the DC socket K value measuring device comprises a fixed block which is provided with a measuring structure. The utility model provides a DC socket K value measuring device used in cooperation with a vernier caliper, which can be connected with the vernier caliper through the arrangement of the measuring structure, and the fixed rod and the measuring metal block at the bottom replace a depth gauge on the vernier caliper to be inserted into a socket to measure a K value. The defects that the K value measurement is too large when only a common vernier caliper is used for testing and the K value cannot be judged near a critical value are overcome. And the problem that the jack can be measured only by dismounting a protection door or a similar protection door device, which is very time-consuming and labor-consuming is solved. The socket detection device can be conveniently used by a detection mechanism, can be popularized to the tail end of a production line, is convenient for factory self-detection, ensures the socket production quality, and reduces missed judgment and misjudgment.

Description

Technical Field

[0001] This utility model relates to the field of socket measurement technology, specifically a DC socket K-value measuring device used in conjunction with a vernier caliper. Background Technology

[0002] The K-value in a socket refers to the specified distance between the live socket and the mating surface. This specification is primarily to ensure the safety of socket use, preventing users from accidentally contacting the live socket when plugging or unplugging, thereby reducing the risk of electric shock. It also helps prevent dust and foreign objects from entering the socket and affecting its performance and lifespan. According to the national standard GB / T 42710.2-2023 "Household and Similar Purpose DC Plugs and Sockets Part 2: Type and Dimensions": the minimum K-value for a single-phase two-pole socket (48VDC) is 8mm, and the minimum K-value for a single-phase two-pole grounded socket (400VDC) is 10mm.

[0003] Currently, ordinary vernier calipers are commonly used for measurement. However, due to the mechanical size limitations of ordinary vernier calipers, the measured K value is easily overestimated, and there are drawbacks such as the inability to make judgments near the critical value. Specifically, when the depth gauge of the vernier caliper is inserted vertically into the socket, because the width of the depth gauge is much smaller than the width of the notch in the socket, the tip of the depth gauge will not contact the highest end of the socket, but will instead be stuck lower in the notch or against one side edge of the socket, resulting in an overestimated measurement. If the measured value is near the critical value, for example, a measurement of 8.22mm for a single-phase two-pole socket, it is impossible to determine whether the true K value is greater than 8mm, leading to missed or incorrect judgments. Utility Model Content

[0004] The purpose of this invention is to provide a DC socket K-value measuring device that works in conjunction with a vernier caliper, thereby solving the problems of missed and incorrect judgments that occur when using only a regular vernier caliper for measurement, as mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a DC socket K-value measuring device for use with a vernier caliper, comprising a fixing block, a measuring structure provided on the fixing block, the measuring structure including a slot opened on the top of the fixing block, a fastening bolt movably installed on one side of the fixing block, a fixing rod provided at the bottom of the fixing block, a measuring metal block provided at the bottom of the fixing rod, and a vertical pressure block movably installed on the fixing rod.

[0006] As a further embodiment of this utility model: the fixing rod and the fixing block are configured to be movably connected, and the fixing rod and the measuring metal block are configured to be fixedly connected.

[0007] As a further embodiment of this utility model: a first rubber pad is fixedly installed on one end of the fastening bolt extending into the slot, and a second rubber pad is fixedly installed on the inner wall of the slot.

[0008] As a further improvement of this utility model, the surface of the vertical pressure block is provided with anti-slip texture.

[0009] As a further improvement of this utility model: two fixing plates are symmetrically installed on the fixing block, and magnetic blocks are fixedly installed on the side of the fixing plate that is close to the vertical pressing block.

[0010] As a further improvement of this utility model: multiple balls are evenly and movably installed on the inner wall of the vertical pressure block, and the multiple balls are all in contact with the surface of the fixing rod.

[0011] As a further improvement of this utility model: a plurality of push rods are evenly fixedly installed on one end of the fastening bolt, and a soft sleeve is installed on the surface of the push rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention provides a DC socket K-value measuring device for use with vernier calipers. Through its measuring structure, it connects to the vernier caliper, using a fixed rod at the bottom and a measuring metal block to replace the depth gauge on the vernier caliper and insert into the socket to measure the K-value. This solves the problems of overestimating the K-value when using ordinary vernier calipers and being unable to make judgments near critical values; it also solves the problem of the time-consuming and laborious process of removing the protective door or similar device from the socket for measurement. It is convenient for use by testing institutions and can also be extended to the end of the production line for convenient factory self-testing, ensuring the quality of socket production and reducing missed and false judgments. Attached Figure Description

[0014] Figure 1 This is a front view of the overall structure in an embodiment of this utility model;

[0015] Figure 2 This is a top view of the overall structure in an embodiment of this utility model;

[0016] Figure 3 This is a side view of the overall structure in an embodiment of the present utility model;

[0017] Figure 4 This is a schematic diagram showing the unfolded structure of the card block and card slot in an embodiment of this utility model.

[0018] In the diagram: 1. Fixing block; 2. Measuring structure; 3. Slot; 4. Fastening bolt; 5. Fixing rod; 6. Measuring metal block; 7. Vertical pressure block; 8. First rubber pad; 9. Second rubber pad; 10. Anti-slip texture; 11. Fixing plate; 12. Magnetic block; 13. Ball bearing; 14. Push rod. Detailed Implementation

[0019] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0020] Reference Figures 1-4 As shown in the figure, a DC socket K-value measuring device for use with a vernier caliper is illustrated in this embodiment of the present invention. It includes a fixing block 1, a measuring structure 2 on the fixing block 1, a slot 3 on the top of the fixing block 1, a fastening bolt 4 movably mounted on one side of the fixing block 1, a fixing rod 5 at the bottom of the fixing block 1, a measuring metal block 6 at the bottom of the fixing rod 5, and a vertical pressure block 7 movably mounted on the fixing rod 5. Through the setting of the measuring structure 2, it can be connected to a vernier caliper. The fixing rod 5 and the measuring metal block 6 at the bottom replace the depth gauge on the vernier caliper to measure the K-value in the socket. This solves the shortcomings of using only ordinary vernier calipers, where the measured K-value is too large and cannot be judged near the critical value; it also solves the problem of the time-consuming and laborious process of removing the protective door or similar device to measure the socket. It is convenient for use by testing institutions and can be extended to the end of the production line for convenient factory self-testing, ensuring the quality of socket production and reducing missed and false judgments.

[0021] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 As another embodiment of this utility model: the fixing rod 5 and the fixing block 1 are configured to be movably connected, the fixing rod 5 and the measuring metal block 6 are configured to be fixedly connected, the fastening bolt 4 extends to one end inside the slot 3 and a first rubber pad 8 is fixedly installed, the inner wall of the slot 3 is fixedly installed with a second rubber pad 9, and the surface of the vertical pressure block 7 is provided with anti-slip texture 10. By setting the fixed rod 5 and the fixed block 1 as a movable connection, after the measuring metal block 6 is inserted into the socket, the fixed rod 5 can be rotated to drive the measuring metal block 6 to rotate in the socket to compact the mating surface. At the same time, setting the measuring metal block 6 and the fixed rod 5 as a fixed connection makes it easy for the measuring metal block 6 and the fixed rod 5 to rotate together to compact the mating surface. With the setting of the first rubber pad 8 and the second rubber pad 9, after the vernier caliper is inserted into the slot 3, the fastening bolt 4 is rotated to tighten it. At this time, the first rubber pad 8 and the second rubber pad 9 are both in contact with the vernier caliper, which can increase a certain friction, improve the quality of tightening, and further prevent loosening and falling off. With the setting of the anti-slip texture 10, the friction of the vertical pressure block 7 surface is increased, which makes it easier to push it up and down on the fixed rod 5.

[0022] As a further embodiment of this utility model: two fixing plates 11 are symmetrically installed on the fixing block 1. Magnetic blocks 12 are fixedly installed on the side of the fixing plate 11 that is close to the vertical pressure block 7. Multiple balls 13 are evenly and movably installed on the inner wall of the vertical pressure block 7. The multiple balls 13 are all in contact with the surface of the fixing rod 5. Multiple push rods 14 are evenly fixedly installed on one end of the fastening bolt 4. The surface of the push rod 14 is covered with a soft sleeve. With the setting of the fixing plate 11 and the magnetic block 12, before measurement, the vertical pressure block 7 is pushed upward so that the magnetic block 12 at its top is attached to the magnetic block 12 on the fixing plate 11. The vertical pressure block 7 can be fixed by the adhesion and attraction of the two magnetic blocks 12, so as to avoid the vertical pressure block 7 falling to the bottom before the measuring metal block 6 is inserted into the socket and affecting the operation. With the setting of the ball bearings 13, the vertical pressure block 7 rises and falls on the fixing rod 5. The friction between the vertical pressure block 7 and the fixing rod 5 can be effectively reduced by the adhesion and rolling of multiple ball bearings 13, making the rise and fall of the vertical pressure block 7 easier. With the setting of the push rod 14, it is convenient to twist and rotate the fastening bolt 4.

[0023] The working principle of this utility model is: This utility model provides a DC socket K-value measuring device for use with vernier calipers;

[0024] Step 1: Insert one end of the depth gauge of the vernier caliper into the slot 3, and then turn the fastening bolt 4 to fasten the measuring structure 2 and the vernier caliper.

[0025] Step 2: Stand the device vertically upright, with the measuring metal block 6 lying across the socket hole. Then push the vernier caliper until the end of the main scale reaches above the fixed block 1. Zero the caliper reading at this point.

[0026] Step 3: Push the vernier of the caliper and insert the measuring metal block 6 into the socket hole until it contacts the socket sleeve. Then rotate the fixing rod 5 so that the long side of the measuring metal block 6 can press horizontally on the edge of the socket sleeve. Push the vertical pressure block 7 down to connect horizontally with the mating surface of the socket to ensure the verticality of the caliper. Read the depth, which is the K value.

[0027] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A DC socket K value measuring device used in cooperation with a vernier caliper, comprising a fixed block (1), characterized in that, The fixed block (1) is provided with a measuring structure (2), the measuring structure (2) includes a slot (3) opened in the top of the fixed block (1), one side of the fixed block (1) is movably provided with a fastening bolt (4), the bottom of the fixed block (1) is provided with a fixed rod (5), the bottom of the fixed rod (5) is provided with a measuring metal block (6), the fixed rod (5) is movably provided with a vertical pressing block (7).

2. The DC socket K value measuring device for use with a vernier calliper according to claim 1, characterised in that, The fixed rod (5) and the fixed block (1) are movably connected, and the fixed rod (5) and the measuring metal block (6) are fixedly connected.

3. The DC socket K value measuring device for use with a vernier calliper according to claim 2, characterised in that, One end of the fastening bolt (4) extending into the slot (3) is fixedly provided with a first rubber pad (8), and the inner wall of the slot (3) is fixedly provided with a second rubber pad (9).

4. The DC socket K value measuring device for use with a vernier caliper according to claim 1, wherein The surface of the vertical pressing block (7) is provided with anti-skid lines (10).

5. The DC socket K value measuring device for use with a Vernier calliper according to claim 1, wherein, Two fixed plates (11) are symmetrically arranged on the fixed block (1), and a magnetic block (12) is fixedly arranged on the surface of the fixed plate (11) and the vertical pressing block (7) close to each other.

6. The DC socket K value measuring device for use with a vernier caliper according to claim 1, wherein, A plurality of rolling balls (13) are movably arranged on the inner wall of the vertical pressing block (7), and the rolling balls (13) are in close contact with the surface of the fixed rod (5).

7. The DC socket K value measuring device for use with a Vernier calliper according to claim 1, wherein, A plurality of push rods (14) are fixedly arranged on one end of the fastening bolt (4), and a soft sleeve is arranged on the surface of the push rod (14).

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