Automobile spark plug electrode gap detection device

Abstract

The utility model relates to the technical field of spark plug production detection, and discloses an automobile spark plug electrode gap detection device comprising a detection bench, the right side of the top of the detection bench is fixedly provided with a moving seat, the top of the moving seat is provided with a clamping assembly, and the clamping assembly comprises a fixed block. A clamping opening is formed in the top of the fixing block, a supporting frame is fixedly mounted at the top of the clamping opening, an inserting opening is formed in the top of the supporting frame, a sliding column is slidably mounted in the inserting opening, an arc-shaped clamping block is mounted at the bottom of the sliding column, and an extrusion spring is mounted at the top of the arc-shaped clamping block. According to the automobile spark plug electrode gap detection device, a spark plug is clamped and limited to the top of the fixed block, a gap between a spark plug center electrode and a side electrode corresponds to the measuring caliper, and the rotating arm is rotated to drive the measuring caliper to be rotatably inserted between the spark plug center electrode and the side electrode. And the gap between the central electrode and the side electrode is measured and detected.

Description

Technical Field

[0001] This utility model relates to the field of spark plug production and testing technology, specifically to a device for detecting the electrode gap of automotive spark plugs. Background Technology

[0002] Automotive spark plugs are key components of the engine ignition system. Their main function is to generate an electric spark at the end of the compression stroke to ignite the combustible mixture in the combustion chamber, enabling the engine to operate normally.

[0003] Spark plugs generally consist of a center electrode, a side electrode, an insulator, and a metal shell. When a spark plug is working, the ignition system inputs a high voltage to the center electrode. There is a certain gap between the center electrode and the side electrode. The high voltage ionizes the gas in the gap, forming a conductive channel, thereby generating an electric spark that ignites the combustible mixture in the combustion chamber. Therefore, there are certain specifications for the gap between the center electrode and the side electrode. After the spark plug is manufactured, the distance between the center electrode and the side electrode needs to be measured and tested by a testing device.

[0004] Existing technologies typically use calipers to measure the gap between the center electrode and the side electrode. During testing, the calipers need to be aligned with the side electrode and the center electrode, resulting in low testing efficiency. Furthermore, misalignment of the calipers can lead to inaccurate measurement results, affecting the judgment of spark plug testing. Therefore, we propose an automotive spark plug electrode gap testing device to solve the problems mentioned above. Utility Model Content

[0005] This utility model provides an automotive spark plug electrode gap detection device, which can solve the problems of low efficiency in measuring the gap between the center electrode and the side electrode using existing calipers, and inaccurate measurement results caused by the difficulty in aligning the calipers.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A device for detecting the electrode gap of an automotive spark plug includes a testing platform, a support base fixedly installed on the top left side of the testing platform, a measuring component installed on the top of the support base, a movable base fixedly installed on the top right side of the testing platform, and a snap-fit ​​component installed on the top of the movable base.

[0008] The snap-fit ​​assembly includes a fixing block, a snap-fit ​​interface on the top of the fixing block, a support frame fixedly mounted on the top of the snap-fit ​​interface, an insertion interface on the top of the support frame, a sliding post slidably mounted inside the insertion interface, an arc-shaped snap-fit ​​block fixedly mounted inside the bottom of the sliding post extending through the support frame, a compression spring mounted on the top of the arc-shaped snap-fit ​​block, and a lifting block fixedly mounted on the top of the sliding post.

[0009] Preferably, the compression spring is sleeved on the outer surface of the sliding column, and the top end of the compression spring is mounted on the top of the inner wall of the support frame.

[0010] Preferably, the top of the movable seat is provided with a sliding groove, a sliding block is slidably connected inside the sliding groove, a threaded rod is rotatably mounted on the front of the sliding block, and the front of the threaded rod passes through the sliding groove and extends to the outside of the movable seat.

[0011] Preferably, the sliding block is installed at the bottom of the fixed block and is used to drive the fixed block to move back and forth within the sliding groove.

[0012] Preferably, the spark plug body is installed inside the card interface, and the arc-shaped card block is disposed on the top of the outer surface of the spark plug body.

[0013] Preferably, the measuring component includes a connecting block, the top of the connecting block has an installation port, a rotating arm is rotatably mounted inside the installation port, a swivel interface is provided on the right side of the rotating arm, a rotating shaft is installed inside the swivel interface, and a measuring caliper is rotatably sleeved on the outer surface of the rotating shaft.

[0014] Preferably, multiple measuring calipers are provided, and the multiple measuring calipers are arranged in a linear array on the outer surface of the rotating shaft.

[0015] Furthermore, multiple measuring calipers are fitted onto the outer surface of the rotating shaft. The distance between the center electrode and the side electrode of the spark plug body can be measured by rotating the measuring calipers according to the distance between the center electrode and the side electrode of the spark plug body.

[0016] Preferably, the top of the support base has a hole, a collar is fixedly installed at the top of the hole, a return spring is installed at the bottom of the hole, a plug is installed at the top of the return spring, and a pressing block is fixedly installed at the top of the plug.

[0017] Preferably, the insertion post is disposed inside the collar, and the pressing block is installed at the bottom of the rotating arm.

[0018] Preferably, a limit block is fixedly installed on the bottom right side of the rotating arm, and the limit block is located at the bottom of the measuring caliper.

[0019] Furthermore, the limit block can measure the rotation angle of the caliper, preventing the caliper from being unable to be connected to the spark plug for measurement.

[0020] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0021] 1. This utility model involves pulling the lifting block, which moves the sliding column and the arc-shaped locking block upwards, causing the compression spring to compress and retract, exposing the locking interface. The spark plug body is then placed inside the locking interface. When the lifting block is released, the compression spring is no longer under tension, causing the arc-shaped locking block to move downwards and reset, pressing against the top of the outer surface of the spark plug body. This ensures that the gap between the center electrode and the side electrode of the spark plug body corresponds to the measuring caliper of the measuring component.

[0022] 2. This utility model involves rotating the rotating arm downwards. When the rotating arm contacts the pressing block, it presses down on the pressing block and the insertion post, causing the insertion post to squeeze the return spring and move downwards. When the pressing block abuts against the top of the collar, it indicates that the rotating arm has rotated to the appropriate angle for measuring calipers. This allows the two measuring calipers to be inserted between the center electrode and the side electrode of the spark plug body. A large gap or inability to insert the calipers indicates a failure to pass the test, thus achieving the effect of measuring and detecting the gap between the center electrode and the side electrode of the spark plug body. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the fixing block structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the threaded rod structure of this utility model;

[0026] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0027] Figure 5 This is a schematic diagram of the plug-in post structure of this utility model.

[0028] The components include: 1. Testing platform; 11. Support base; 101. Hole; 102. Collar; 103. Return spring; 104. Insertion post; 105. Pressing block; 2. Measuring assembly; 201. Connecting block; 202. Rotating arm; 203. Rotating shaft; 204. Measuring caliper; 3. Moving base; 31. Sliding groove; 32. Sliding block; 33. Threaded rod; 4. Snap-fit ​​assembly; 401. Fixing block; 402. Snap-fit ​​interface; 403. Support frame; 404. Sliding post; 405. Arc-shaped snap-fit ​​block; 406. Compression spring; 407. Lifting block; 5. Spark plug body; 6. Limiting block. Detailed Implementation

[0029] The specific embodiments of this utility model are described in detail below, but it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0030] Example 1:

[0031] Please see Figure 1-4 This utility model provides a technical solution:

[0032] A device for detecting the electrode gap of an automotive spark plug includes a testing platform 1, a support base 11 fixedly installed on the top left side of the testing platform 1, a measuring component 2 installed on the top of the support base 11, a movable base 3 fixedly installed on the top right side of the testing platform 1, and a snap-fit ​​component 4 installed on the top of the movable base 3.

[0033] The snap-fit ​​assembly 4 includes a fixing block 401, a snap-fit ​​interface 402 on the top of the fixing block 401, a support frame 403 fixedly mounted on the top of the snap-fit ​​interface 402, an insertion interface on the top of the support frame 403, a sliding post 404 slidably mounted inside the insertion interface, an arc-shaped snap-fit ​​block 405 fixedly mounted inside the bottom of the sliding post 404 extending through the support frame 403, a compression spring 406 mounted on the top of the arc-shaped snap-fit ​​block 405, and a lifting block 407 fixedly mounted on the top of the sliding post 404.

[0034] A compression spring 406 is sleeved on the outer surface of the sliding post 404, and the top of the compression spring 406 is mounted on the top of the inner wall of the support frame 403. The spark plug body 5 is installed inside the locking interface 402, and the arc-shaped locking block 405 is set on the top of the outer surface of the spark plug body 5.

[0035] Through the above technical solution, the movable seat 3 is installed on the top of the testing table 1, so that the fixing block 401 can be installed on the top of the movable seat 3. The fixing block 401 has a card interface 402 on its top. The card interface 402 is adapted to the size of the spark plug body 5. The bottom of the spark plug body 5 can be placed into the card interface 402 for initial fixation. A support frame 403 is installed on the top of the card interface 402. A sliding column 404 is slidably installed in the insertion interface on the top of the support frame 403, so that the bottom of the sliding column 404 penetrates into the inside of the support frame 403 and an arc-shaped card block 405 is installed. The top of the sliding column 404 is located on the top of the support frame 403 and a lifting block 407 is installed. Then, a compression spring 406 is sleeved on the outer surface of the part of the sliding column 404 located inside the support frame 403, so that the top of the compression spring 406 is installed on the top of the inner wall of the support frame 403 and the bottom of the compression spring 406 is installed on the arc-shaped card block 405. At the top of 05, when the spark plug body 5 is placed into the locking interface 402, the operator pulls the lifting block 407, causing the sliding column 404 and the arc-shaped locking block 405 to move upward, causing the compression spring 406 to compress and retract, exposing the position of the locking interface 402. The operator places the spark plug body 5 inside the locking interface 402, with the center electrode of the spark plug body 5 facing the back, and the front of the spark plug body 5 abutting against the back of the inner wall of the locking interface 402, so that the center electrode and the side electrode of the spark plug body 5 correspond to the measuring component 2. The operator releases the lifting block 407, and the compression spring 406 is no longer under tension, which will cause the arc-shaped locking block 405 to move downward and reset, pressing the arc-shaped locking block 405 against the top of the outer surface of the spark plug body 5, achieving the effect of clamping and limiting the spark plug body 5 inside the locking interface 402, preventing the measuring component 2 from measuring and detecting the distance between the center electrode and the side electrode of the spark plug body 5.

[0036] Considering that different spark plugs have different lengths, which may cause the spark plug placed inside the card interface 402 to not correspond to the measuring component 2, the following is provided: Figure 2 and Figure 3 The top of the movable seat 3 is provided with a sliding groove 31, and a sliding block 32 is slidably connected inside the sliding groove 31. A threaded rod 33 is rotatably installed on the front of the sliding block 32. The front of the threaded rod 33 passes through the sliding groove 31 and extends to the outside of the movable seat 3.

[0037] The sliding block 32 is installed at the bottom of the fixed block 401 and is used to drive the fixed block 401 to move back and forth within the sliding groove 31.

[0038] Furthermore, by creating a sliding groove 31 on the top of the movable seat 3, the sliding block 32 can be slidably installed inside the sliding groove 31. The threaded rod 33 passes through the front of the movable seat 3 into the interior of the sliding groove 31 and is rotatably connected to the front of the sliding block 32, so that the fixed seat and the sliding block 32 are fixedly connected. When testing spark plug bodies 5 of different lengths, the spark plug body 5 is placed inside the card interface 402. Rotating the threaded rod 33 can adjust the position of the sliding block 32 and the fixed block 401 back and forth, so that the spark plug body 5 placed inside the card interface 402 corresponds to the measuring component 2, achieving the effect of adjusting and testing spark plugs of different lengths.

[0039] Example 2:

[0040] Please see Figure 1 and Figure 5 Furthermore, in conjunction with Embodiment 1, it is further obtained that the measuring component 2 includes a connecting block 201, the top of the connecting block 201 is provided with an installation port, a rotating arm 202 is rotatably installed inside the installation port, a jack is provided on the right side of the rotating arm 202, a rotating shaft 203 is installed inside the jack, and a measuring caliper 204 is rotatably sleeved on the outer surface of the rotating shaft 203.

[0041] Multiple measuring calipers 204 are provided, and the multiple measuring calipers 204 are arranged in a linear array on the outer surface of the rotating shaft 203. A limit block 6 is fixedly installed on the bottom right side of the rotating arm 202, and the limit block 6 is located at the bottom of the measuring calipers 204.

[0042] Through the above technical solution, the support base 11 is fixedly installed on the top of the testing table 1, so that the rotating arm 202 can be rotatably installed into the mounting port opened on the top of the connecting block 201. A swivel interface is opened at the right end of the rotating arm 202, so that the measuring caliper 204 can be installed into the swivel interface by means of the rotating shaft 203. Then the measuring caliper 204 can rotate by means of the rotating shaft 203. When the measuring caliper 204 is rotated to a horizontal position with the rotating arm 202, the head end of the measuring caliper 204 will be inserted between the center electrode and the side electrode of the spark plug body 5. The thickness of the measuring caliper 204 is a fixed thickness for measurement. When the gap between the center electrode and the side electrode is required to be the thickness of two measuring calipers 204, the two measuring calipers 204 on the outer surface of the rotating shaft 203 are rotated and inserted between the center electrode and the side electrode of the spark plug body 5. If there is a large gap or the calipers cannot be inserted, the test is unqualified. The limiting block 6 installed on the bottom right side of the rotating arm 202 can limit the rotation angle of the measuring calipers 204 to prevent the measuring calipers 204 from being unable to be inserted between the center electrode and the side electrode, thus achieving the effect of testing the gap between the center electrode and the side electrode of the spark plug body 5.

[0043] Considering the problem that the measuring caliper 204 cannot be inserted between the center electrode and the side electrode of the spark plug body 5 without the rotating arm 202 being limited, a [details omitted] Figure 5 The support base 11 has a hole 101 at the top, a collar 102 is fixedly installed at the top of the hole 101, a return spring 103 is installed at the bottom of the hole 101, a plug post 104 is installed at the top of the return spring 103, and a pressing block 105 is fixedly installed at the top of the plug post 104.

[0044] The insertion post 104 is located inside the collar 102, and the pressing block 105 is installed at the bottom of the rotating arm 202.

[0045] Furthermore, by creating a hole 101 at the top of the support base 11, the collar 102 is installed at the top of the hole 101. The bottom end of the return spring 103 is installed at the bottom of the inner wall of the hole 101, and the top end of the return spring 103 is installed at the bottom of the plug post 104. The pressing block 105 is fixedly installed at the top of the plug post 104, so that when the pressing block 105 moves downward into the hole 101, the pressing block 105 can abut against the top of the collar 102, preventing the plug post 104 from being completely inserted into the collar 102 and the hole 101. When measuring the spark plug body 5... The operator rotates the measuring caliper 204 to the required number of spark plugs, keeping it horizontal with the rotating arm 202. Then, the rotating arm 202 is rotated downwards. When the rotating arm 202 contacts the pressing block 105, the pressing block 105 and the plug post 104 are pressed down, causing the plug post 104 to squeeze the return spring 103 and move downwards. When the pressing block 105 abuts against the top of the collar 102, it indicates that the rotating arm 202 has rotated to the appropriate angle for the measuring caliper 204 to measure. This avoids the rotating arm 202 rotating too much, which would prevent the measuring caliper 204 from docking with the spark plug body 5 for measurement.

[0046] It should be noted that the measuring caliper 204 is tightly fitted onto the outer surface of the rotating shaft 203. After the measuring caliper 204 rotates at an angle on the outer surface of the rotating shaft 203, the measuring caliper 204 does not easily rotate on its own and has a certain rotational resistance.

[0047] In summary, the working principle of this utility model is as follows:

[0048] When measuring and testing the spark plug body 5, the operator pulls the lifting block 407, which moves the sliding column 404 and the arc-shaped locking block 405 upward, causing the compression spring 406 to compress and retract, exposing the position of the locking interface 402. The operator places the spark plug body 5 into the inside of the locking interface 402. The operator releases the lifting block 407, and the compression spring 406 is no longer under tension, which will cause the arc-shaped locking block 405 to move downward and reset. The arc-shaped locking block 405 is pressed against the top of the outer surface of the spark plug body 5. Then, the threaded rod 33 can be rotated to adjust the position of the sliding block 32 and the fixed block 401 back and forth, so that the gap between the center electrode and the side electrode of the spark plug body 5 corresponds to the measuring caliper 204 of the measuring component 2, achieving the effect of clamping and limiting the spark plug body 5 into the inside of the locking interface 402.

[0049] When measuring and testing spark plugs, the operator rotates the required number of measuring calipers 204 horizontally with the rotating arm 202, then rotates the rotating arm 202 downwards. When the rotating arm 202 contacts the pressing block 105, it presses down on the pressing block 105 and the insertion post 104, causing the insertion post 104 to squeeze the return spring 103 and move downwards. When the pressing block 105 abuts against the top of the collar 102, it indicates that the rotating arm 202 has rotated to the appropriate angle for measuring calipers 204, allowing the two measuring calipers 204 to be inserted between the center electrode and the side electrode of the spark plug body 5. A large gap or inability to insert the calipers indicates a failure to pass the test, thus achieving the effect of measuring and testing the gap between the center electrode and the side electrode of the spark plug body 5.

[0050] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A device for detecting the electrode gap of an automotive spark plug, comprising a testing platform (1), wherein a support base (11) is fixedly installed on the top left side of the testing platform (1), characterized in that: A measuring component (2) is installed on the top of the support base (11), and a movable base (3) is fixedly installed on the top right side of the detection table (1). A snap-fit ​​component (4) is installed on the top of the movable base (3). The snap-fit ​​assembly (4) includes a fixing block (401), a snap-fit ​​interface (402) is provided on the top of the fixing block (401), a support frame (403) is fixedly installed on the top of the snap-fit ​​interface (402), an insertion interface is provided on the top of the support frame (403), a sliding column (404) is slidably installed inside the insertion interface, an arc-shaped snap-fit ​​block (405) is fixedly installed at the bottom of the sliding column (404) through the inside of the support frame (403), a compression spring (406) is installed on the top of the arc-shaped snap-fit ​​block (405), and a lifting block (407) is fixedly installed on the top of the sliding column (404).

2. The automotive spark plug electrode gap detection device according to claim 1, characterized in that: The compression spring (406) is sleeved on the outer surface of the sliding column (404), and the top end of the compression spring (406) is mounted on the top of the inner wall of the support frame (403).

3. The automotive spark plug electrode gap detection device according to claim 2, characterized in that: The top of the movable seat (3) is provided with a sliding groove (31), and a sliding block (32) is slidably connected inside the sliding groove (31). A threaded rod (33) is rotatably installed on the front side of the sliding block (32), and the front side of the threaded rod (33) passes through the sliding groove (31) and extends to the outside of the movable seat (3).

4. The automotive spark plug electrode gap detection device according to claim 3, characterized in that: The sliding block (32) is installed at the bottom of the fixed block (401) and is used to drive the fixed block (401) to move back and forth in the sliding groove (31).

5. The automotive spark plug electrode gap detection device according to claim 4, characterized in that: The spark plug body (5) is installed inside the card interface (402), and the arc-shaped card block (405) is set on the top of the outer surface of the spark plug body (5).

6. The automotive spark plug electrode gap detection device according to claim 1, characterized in that: The measuring component (2) includes a connecting block (201), the top of the connecting block (201) is provided with an installation port, a rotating arm (202) is rotatably installed inside the installation port, a swivel interface is provided on the right side of the rotating arm (202), a rotating shaft (203) is installed inside the swivel interface, and a measuring caliper (204) is rotatably sleeved on the outer surface of the rotating shaft (203).

7. The automotive spark plug electrode gap detection device according to claim 6, characterized in that: Multiple measuring calipers (204) are provided, and the multiple measuring calipers (204) are arranged in a linear array on the outer surface of the rotating shaft (203).

8. The automotive spark plug electrode gap detection device according to claim 1, characterized in that: The support base (11) has a hole (101) at the top, a collar (102) is fixedly installed at the top of the hole (101), a reset spring (103) is installed at the bottom of the hole (101), a plug post (104) is installed at the top of the reset spring (103), and a pressing block (105) is fixedly installed at the top of the plug post (104).

9. The automotive spark plug electrode gap detection device according to claim 8, characterized in that: The plug post (104) is located inside the collar (102), and the pressing block (105) is installed at the bottom of the rotating arm (202).

10. The automotive spark plug electrode gap detection device according to claim 6, characterized in that: A limiting block (6) is fixedly installed on the bottom right side of the rotating arm (202), and the limiting block (6) is located at the bottom of the measuring caliper (204).

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