Quick-release self-calibration sensor connecting structure

Abstract

The utility model belongs to the technical field of automobile parts, in particular to a quick-release self-calibration sensor connecting structure, which comprises a sensor body and a fixed seat, an external thread sleeve is fixed on the bottom surface of the fixed seat, and an oil duct interface on the bottom side of the sensor body penetrates through the fixed seat and is communicated with the external thread sleeve. A positioning insertion plate is fixed on the bottom surface of the sensor body; the locking mechanism comprises an arc-shaped steel ring and a locking mechanism; a first fixed block; a second fixing block; the threaded rod is hinged to the second fixing block and penetrates through the notch; a butterfly nut; the locking mechanism locks the positioning inserting plate and the positioning pipe through the arc-shaped steel ring, the first fixing block, the second fixing block, the threaded rod and the butterfly nut, the first permanent magnet and the second permanent magnet are further arranged to assist in positioning, triple fixing is achieved, and the device has the advantages of being convenient to use, easy to disassemble and assemble, high in stability and high in bumping resistance.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, specifically relating to a quick-release self-calibrating sensor connection structure. Background Technology

[0002] The oil pressure sensor in a car is an important device for detecting the oil pressure in the vehicle's engine. The data detected can help control the normal operation of the engine.

[0003] The electronic oil pressure sensor consists of a thick-film pressure sensor chip, a signal processing circuit, a housing, a fixed circuit board device, and two leads (signal line and alarm line). The signal processing circuit consists of a power supply circuit, a sensor compensation circuit, a zeroing circuit, a voltage amplification circuit, a current amplification circuit, a filtering circuit, and an alarm circuit.

[0004] The oil pressure sensor is installed on the engine's main oil passage. Currently, the traditional method of installing oil pressure sensors uses a rigid connection with a screw sleeve, which makes subsequent disassembly operations inconvenient and affects maintenance efficiency.

[0005] A search revealed that Chinese utility model patent CN219416545U discloses "an oil pressure sensor with quick-release function", which includes a mounting base, a cover fixedly connected to the top of the mounting base, a sensor body fixedly connected to the top of the cover, a detection element fixedly connected to the bottom of the sensor body, a connecting base fixedly connected to the bottom of the mounting base, and a threaded tube fixedly connected to the bottom of the connecting base.

[0006] Oil pressure sensors in the prior art, including those mentioned above, are easy to install and remove, but the locking state of the sensor body is maintained only by the elastic force of a spring. During vehicle operation, especially on bumpy roads, the sensor body is prone to vibration, affecting the reliability of the fixation.

[0007] To address the aforementioned issues, this invention proposes a quick-release self-calibrating sensor connection structure. Utility Model Content

[0008] To address the aforementioned problems in the existing technology, this utility model provides a quick-release self-calibration sensor connection structure, which is convenient to use, easy to assemble and disassemble, and has high stability.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a quick-release self-calibrating sensor connection structure, including a sensor body and a fixing base, wherein an external threaded sleeve is fixed on the bottom surface of the fixing base, an oil passage interface on the bottom side of the sensor body passes through the fixing base and communicates with the external threaded sleeve, and multiple positioning plates evenly spaced along the circumferential direction are fixed on the bottom surface of the sensor body, further comprising:

[0010] The positioning tube is fixed to the top surface of the fixing base. The oil passage interface on the bottom side of the sensor body passes through the positioning tube, and a positioning slot for the positioning insert plate to be embedded is provided on the outer wall of the positioning tube.

[0011] A locking mechanism is used to lock the positioning plate and the positioning tube together, wherein the locking mechanism includes:

[0012] The arc-shaped steel ring has limiting grooves on the outer walls of both the positioning insert plate and the positioning tube for embedding.

[0013] A first fixing block is fixed to one end of the arc-shaped steel ring, and a notch is provided on the first fixing block;

[0014] The second fixing block is fixed to the end of the arc-shaped steel ring away from the first fixing block;

[0015] A threaded rod, which is hinged to the second fixing block and passes through the notch;

[0016] A wing nut, which is installed on the protruding end of the threaded rod by means of threaded engagement.

[0017] As a preferred embodiment of this utility model, two arc-shaped steel rings are spaced apart, and the two ends of the two arc-shaped steel rings are respectively fixedly connected by a first fixing block and a second fixing block.

[0018] In a preferred embodiment of this invention, the outer wall of the positioning plate is fitted to the inner wall of the positioning slot.

[0019] As a preferred embodiment of this utility model, the outer wall of the arc-shaped steel ring is fitted to the inner wall of the limiting groove.

[0020] As a preferred embodiment of this utility model, the locking mechanism further includes:

[0021] Two perforated mounting ears are fixed at intervals to the outer wall of the second fixing block. A connecting block is fixed to the tail end of the threaded rod and embedded in the inner space of the two perforated mounting ears.

[0022] A locking bolt, which passes through the perforated mounting lug and the connecting block;

[0023] A locking nut is installed on the protruding end of the locking bolt by means of thread engagement.

[0024] As a preferred embodiment of this utility model, it further includes:

[0025] Multiple No. 1 permanent magnets are fixed at equal intervals along the circumferential direction on the bottom surface of the sensor body, and a positioning groove is provided on the bottom surface of the positioning tube for the No. 1 permanent magnets to be embedded.

[0026] The second permanent magnet is fixed in the positioning groove and attracts the first permanent magnet.

[0027] As a preferred embodiment of this utility model, the outer wall of the oil passage interface of the sensor body is attached to the inner wall of the positioning tube.

[0028] As a preferred embodiment of this invention, the bottom edge of the oil passage interface of the sensor body is provided with a chamfer.

[0029] Compared with the prior art, the beneficial effects of this utility model are:

[0030] In this utility model, the locking mechanism locks the positioning plate and the positioning tube by means of an arc-shaped steel ring, a first fixing block, a second fixing block, a threaded rod, and a butterfly nut. It is also equipped with a first permanent magnet and a second permanent magnet for auxiliary positioning, achieving triple fixation. It is convenient to use, easy to disassemble and assemble, has high stability, and strong resistance to bumps.

[0031] Other additional advantages and beneficial effects of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0032] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0033] Figure 1 This is a schematic diagram of the structure of this utility model;

[0034] Figure 2 This utility model Figure 1 A magnified schematic diagram of the locking mechanism in the diagram;

[0035] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the diagram;

[0036] Figure 4 This is a partial cross-sectional structural diagram of the fixing seat in this utility model.

[0037] In the diagram: 1. Sensor body; 11. Positioning insert; 12. Limiting groove; 13. Chamfer; 2. Fixing base; 3. External threaded sleeve; 4. Positioning tube; 41. Positioning slot; 42. Positioning groove; 5. Locking mechanism; 51. Arc-shaped steel ring; 52. Fixing block No. 1; 521. Notch; 53. Fixing block No. 2; 54. Threaded rod; 541. Connecting block; 55. Butterfly nut; 56. Mounting ear with hole; 57. Locking bolt; 58. Locking nut; 6. Permanent magnet No. 1; 7. Permanent magnet No. 2. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Please see Figures 1-4 The present invention provides the following technical solution: a quick-release self-calibrating sensor connection structure, including a sensor body 1 and a fixing base 2, an external threaded sleeve 3 fixed on the bottom surface of the fixing base 2, an oil passage interface on the bottom side of the sensor body 1 passing through the fixing base 2 and connected to the external threaded sleeve 3, a plurality of positioning inserts 11 equally spaced along the circumferential direction fixed on the bottom surface of the sensor body 1, and further including: a positioning tube 4 and a locking mechanism 5, wherein the locking mechanism 5 includes: an arc-shaped steel ring 51, a first fixing block 52, a second fixing block 53, a threaded rod 54 and a wing nut 55.

[0040] Furthermore, by Figures 1-3As shown, in this embodiment, the positioning tube 4 is fixed to the top surface of the fixing base 2, the oil passage interface on the bottom side of the sensor body 1 passes through the positioning tube 4, and a positioning slot 41 for the positioning insert plate 11 to be inserted is provided on the outer wall of the positioning tube 4. The positioning insert plate 11 and the positioning tube 4 are locked by the locking mechanism 5. A limiting groove 12 for the arc-shaped steel ring 51 to be inserted is provided on the outer wall of both the positioning insert plate 11 and the positioning tube 4. The first fixing block 52 is fixed to one end of the arc-shaped steel ring 51, and a notch 521 is provided on the first fixing block 52. The second fixing block 53 is fixed to the end of the arc-shaped steel ring 51 away from the first fixing block 52. The threaded rod 54 is hinged to the... The second fixing block 53 passes through the notch 521, and the wing nut 55 is installed on the protruding end of the threaded rod 54 by thread engagement. After adopting the above scheme, when using it, first align the oil passage interface of the sensor body 1 with the oil passage of the fixing seat 2, so that the positioning plate 11 on the bottom side of the sensor body 1 is aligned with the positioning slot 41 of the positioning tube 4, and then insert the sensor body 1 downward into the positioning tube 4 until the bottom surface of the sensor body 1 contacts the inner bottom surface of the positioning tube 4. At this time, the positioning plate 11 is fully embedded in the positioning slot 41, completing the initial positioning. At the same time, the oil passage interface on the bottom side of the sensor body 1 passes through the fixing seat 2 and is connected to the external threaded sleeve 3, which can be connected to the external oil circuit system through the external threaded sleeve 3.

[0041] Next, locking is performed by fitting the arc-shaped steel ring 51 onto the limiting groove 12. Then, the wing nut 55 is rotated. Since the threaded rod 54 is hinged to the second fixing block 53 and passes through the notch 521 of the first fixing block 52, the wing nut 55 will move along the threaded rod 54 when it rotates, thereby pulling the second fixing block 53 towards the first fixing block 52. This causes the first fixing block 52 and the second fixing block 53 at both ends of the arc-shaped steel ring 51 to move closer to each other. The arc-shaped steel ring 51 undergoes elastic deformation under tension and embeds into the limiting groove 12 on the outer wall of the positioning insert plate 11 and the positioning tube 4, locking the positioning insert plate 11 and the positioning tube 4 tightly together. This ensures that the sensor body 1 and the fixing seat 2 are firmly connected and will not rotate or shift relative to each other. At the same time, the elastic compression of the arc-shaped steel ring 51 can also enhance the sealing of the connection.

[0042] When it is necessary to disassemble the sensor body 1, rotate the wing nut 55 in the opposite direction to loosen it from the threaded rod 54. After the arc-shaped steel ring 51 loses tension, it elastically rebounds, the first fixing block 52 and the second fixing block 53 separate, and the arc-shaped steel ring 51 exits from the limiting groove 12, releasing the locking of the positioning insert plate 11 and the positioning tube 4. At this time, the sensor body 1 can be easily pulled out from the positioning tube 4, realizing quick disassembly.

[0043] This structure achieves precise positioning of the sensor body 1 during installation through the cooperation of the positioning insert plate 11 and the positioning slot 41, ensuring accurate docking of the oil passage interface and achieving self-calibration without the need for additional calibration steps, thus improving installation efficiency and accuracy. The design of the locking mechanism 5 makes the connection and disassembly of the sensor body 1 and the fixed base 2 simple and quick, suitable for scenarios that require frequent disassembly and assembly.

[0044] Preferably, by Figures 1-3 As shown in this embodiment, there are two arc-shaped steel rings 51 spaced apart, and the two ends of the two arc-shaped steel rings 51 are respectively fixedly connected by a first fixing block 52 and a second fixing block 53. After adopting the above scheme, the double arc-shaped steel rings 51 design has high structural stability and fatigue resistance when in use, and can tightly lock the positioning insert plate 11 and the positioning tube 4 together, ensuring that the sensor body 1 and the fixing seat 2 are firmly connected.

[0045] In addition, even if one of the arc-shaped steel rings 51 fails due to fatigue or obstruction by foreign objects, the other arc-shaped steel ring 51 can still ensure that the sensor body 1 is firmly connected to the mounting base 2.

[0046] Preferably, by Figures 1-3 As shown, in this embodiment, the outer wall of the positioning insert 11 is attached to the inner wall of the positioning slot 41. With the above solution, this close fit has high stability during use, avoiding relative shaking between the sensor body 1 and the positioning tube 4.

[0047] Preferably, by Figures 1-3 As shown, in this embodiment, the outer wall of the arc-shaped steel ring 51 fits against the inner wall of the limiting groove 12. With the above solution, this close fit has high stability during use, preventing the arc-shaped steel ring 51 from shifting.

[0048] Preferably, by Figure 1 and Figure 2 As shown, in this embodiment, the locking mechanism 5 further includes: two perforated mounting ears 56, a locking bolt 57, and a locking nut 58. The two perforated mounting ears 56 are fixed at intervals to the outer wall of the second fixing block 53. A connecting block 541 is fixed at the tail end of the threaded rod 54 and embedded in the inner space of the two perforated mounting ears 56. The locking bolt 57 passes through the perforated mounting ears 56 and the connecting block 541. The locking nut 58 is installed on the protruding end of the locking bolt 57 by thread engagement. With the above scheme, in use, the threaded rod 54 is rotated and installed through the cooperation of the two perforated mounting ears 56, the locking bolt 57, and the locking nut 58. The threaded rod 54 rotates about the locking bolt 57 as the axis.

[0049] With the above solution, the threaded rod 54 can be installed stably and can also be quickly disassembled by simply unscrewing the locking nut 58.

[0050] In addition, after the arc-shaped steel ring 51 is locked, the locking bolt 57 and the locking nut 58 can be tightened further to increase the friction between the two hole mounting ears 56 and the connecting block 541, and to prevent the threaded rod 54 from rotating unexpectedly.

[0051] Preferably, by Figure 1 and Figure 4 As shown, this embodiment further includes: multiple first permanent magnets 6 and second permanent magnets 7. The multiple first permanent magnets 6 are fixed at equal intervals along the circumferential direction on the bottom surface of the sensor body 1. A positioning groove 42 for the first permanent magnets 6 to be embedded is opened on the bottom surface of the positioning tube 4. The second permanent magnet 7 is fixed in the positioning groove 42 and attracts the first permanent magnets 6. With the above scheme, when the sensor body 1 is close to the positioning tube 4, the magnetic attraction automatically guides the positioning insert 11 to align with the positioning slot 41.

[0052] Before the locking mechanism 5 is activated, the magnetic pre-tightening force of permanent magnet 6 and permanent magnet 7 has formed a three-level pre-tightening system with the arc-shaped steel ring 51 through the limiting groove 12, which has high stability.

[0053] Preferably, by Figure 1 and Figure 4 As shown in this embodiment, the outer wall of the oil passage interface of the sensor body 1 is attached to the inner wall of the positioning tube 4. After adopting the above solution, this close fit has high stability during use, avoiding relative shaking between the sensor body 1 and the positioning tube 4.

[0054] Preferably, by Figure 1 and Figure 4 As shown in this embodiment, the bottom edge of the oil passage interface of the sensor body 1 is provided with a chamfer 13. After adopting the above solution, the chamfer 13 has a guiding function when in use, making it easy to insert the sensor body 1 into the positioning tube 4.

[0055] The circuit connection involved in this utility model is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It belongs to the widely used prior art.

[0056] Components not described in detail in this article are existing technologies.

[0057] The working principle and usage process of this utility model: When using the sensor connection structure of this utility model, first align the oil passage interface of the sensor body 1 with the oil passage of the fixed seat 2, align the positioning plate 11 on the bottom side of the sensor body 1 with the positioning slot 41 of the positioning tube 4, and then insert the sensor body 1 downward into the positioning tube 4 until the bottom surface of the sensor body 1 contacts the inner bottom surface of the positioning tube 4. At this time, the positioning plate 11 is fully embedded in the positioning slot 41, completing the initial positioning. At the same time, the oil passage interface on the bottom side of the sensor body 1 passes through the fixed seat 2 and is connected to the external threaded sleeve 3, which can be connected to the external oil circuit system through the external threaded sleeve 3.

[0058] Next, locking is performed by fitting the arc-shaped steel ring 51 onto the limiting groove 12. Then, the wing nut 55 is rotated. Since the threaded rod 54 is hinged to the second fixing block 53 and passes through the notch 521 of the first fixing block 52, the wing nut 55 will move along the threaded rod 54 when it rotates, thereby pulling the second fixing block 53 towards the first fixing block 52. This causes the first fixing block 52 and the second fixing block 53 at both ends of the arc-shaped steel ring 51 to move closer to each other. The arc-shaped steel ring 51 undergoes elastic deformation under tension and is embedded in the limiting groove 12 on the outer wall of the positioning insert plate 11 and the positioning tube 4, locking the positioning insert plate 11 and the positioning tube 4 tightly together. This ensures that the sensor body 1 and the fixing seat 2 are firmly connected and will not rotate or shift relative to each other. At the same time, the elastic compression of the arc-shaped steel ring 51 can also enhance the sealing of the connection.

[0059] When it is necessary to disassemble the sensor body 1, rotate the wing nut 55 in the opposite direction to loosen it from the threaded rod 54. After the arc-shaped steel ring 51 loses tension, it elastically rebounds, the first fixing block 52 and the second fixing block 53 separate, and the arc-shaped steel ring 51 exits from the limiting groove 12, releasing the locking of the positioning insert plate 11 and the positioning tube 4. At this time, the sensor body 1 can be easily pulled out from the positioning tube 4 to achieve quick disassembly.

[0060] This structure, through the cooperation of the positioning insert plate 11 and the positioning slot 41, achieves precise positioning of the sensor body 1 during installation, ensuring accurate docking of the oil passage interface and achieving self-calibration without the need for additional calibration steps, thus improving installation efficiency and accuracy. The design of the locking mechanism 5 makes the connection and disassembly of the sensor body 1 and the fixed base 2 simple and quick, suitable for scenarios that require frequent disassembly and assembly.

[0061] The locking mechanism 5 of this utility model locks the positioning plate 11 and the positioning tube 4 through the arc-shaped steel ring 51, the first fixing block 52, the second fixing block 53, the threaded rod 54, and the butterfly nut 55. It is also equipped with a first permanent magnet 6 and a second permanent magnet 7 for auxiliary positioning, realizing triple fixation. It has the characteristics of being easy to use, easy to disassemble and assemble, high stability, and strong resistance to bumps.

[0062] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A quick-release self-calibrating sensor connection structure, comprising a sensor body (1) and a fixing base (2), wherein an external threaded sleeve (3) is fixed on the bottom surface of the fixing base (2), an oil passage interface on the bottom side of the sensor body (1) passes through the fixing base (2) and is connected to the external threaded sleeve (3), and a plurality of positioning inserts (11) evenly distributed along the circumferential direction are fixed on the bottom surface of the sensor body (1), characterized in that, Also includes: Positioning tube (4), the positioning tube (4) is fixed to the top surface of the fixing base (2), the oil passage interface on the bottom side of the sensor body (1) passes through the positioning tube (4), and a positioning slot (41) for the positioning insert plate (11) to be inserted is provided on the outer wall of the positioning tube (4). A locking mechanism (5) is provided, wherein the positioning insert (11) and the positioning tube (4) are locked together, and wherein the locking mechanism (5) comprises: The arc-shaped steel ring (51) has a limiting groove (12) on the outer wall of both the positioning insert plate (11) and the positioning tube (4) for embedding the arc-shaped steel ring (51). A first fixing block (52) is fixed to one end of the arc-shaped steel ring (51), and a notch (521) is provided on the first fixing block (52). The second fixing block (53) is fixed to the end of the arc-shaped steel ring (51) away from the first fixing block (52); A threaded rod (54) is hinged to the second fixing block (53) and passes through the notch (521). A wing nut (55) is installed on the protruding end of the threaded rod (54) by means of thread engagement.

2. The quick-release self-calibration sensor connection structure according to claim 1, characterized in that: Two arc-shaped steel rings (51) are spaced apart, and the two ends of the two arc-shaped steel rings (51) are respectively fixedly connected to the first fixing block (52) and the second fixing block (53).

3. The quick-release self-calibration sensor connection structure according to claim 1, characterized in that: The outer wall of the positioning insert (11) is attached to the inner wall of the positioning slot (41).

4. The quick-release self-calibration sensor connection structure according to claim 1, characterized in that: The outer wall of the arc-shaped steel ring (51) fits against the inner wall of the limiting groove (12).

5. The quick-release self-calibrating sensor connection structure according to claim 1, characterized in that: The locking mechanism (5) further includes: Two perforated mounting ears (56) are fixed at intervals to the outer wall of the second fixing block (53). A connecting block (541) is fixed at the tail end of the threaded rod (54) and embedded in the inner space of the two perforated mounting ears (56). Locking bolt (57), the locking bolt (57) passes through the perforated mounting lug (56) and the connecting block (541); A locking nut (58) is installed on the protruding end of the locking bolt (57) by means of thread engagement.

6. The quick-release self-calibrating sensor connection structure according to claim 1, characterized in that: Further includes: Multiple No. 1 permanent magnets (6) are fixed at equal intervals along the circumferential direction on the bottom surface of the sensor body (1). A positioning groove (42) is provided on the bottom surface of the positioning tube (4) for the No. 1 permanent magnets (6) to be embedded. The second permanent magnet (7) is fixed in the positioning groove (42) and attracts the first permanent magnet (6).

7. The quick-release self-calibration sensor connection structure according to claim 1, characterized in that: The outer wall of the oil passage interface of the sensor body (1) is attached to the inner wall of the positioning tube (4).

8. The quick-release self-calibration sensor connection structure according to claim 1, characterized in that: The bottom edge of the oil passage interface of the sensor body (1) is provided with a chamfer (13).

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