Low-cost probe assembly
By designing a probe assembly with a detachable sealing cap and a hollow threaded part, the problem of difficult probe replacement was solved, enabling low-cost probe maintenance and a stable connection, and extending the service life of the equipment.
Patent Information
- Application Number
- CN202520698193.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-04-14
AI Technical Summary
The existing probes are integrally molded and difficult to replace, leading to complete scrapping and excessive costs.
Design a low-cost probe assembly that uses a detachable sealing cap to connect to the probe tube, combined with a hollow threaded part and a PU tube, to enable individual replacement of the probe tube, and reduce maintenance costs through the threaded connection and the protection of the PU tube.
It enables individual replacement of probe components, reduces maintenance costs, improves equipment lifespan and stability, reduces redundant parts, and prevents loosening and leakage.
Smart Images
Figure CN223940312U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of probe technology, specifically a low-cost probe assembly. Background Technology
[0002] A probe is a repackaged form of a sensor. It is a component that encapsulates the most basic unit of a sensor through reasonable electronic circuitry and external packaging structure, giving it some independent functions that we need. Like sensors, probes are usually classified into several categories based on their basic sensing functions, such as thermal probes, light probes, gas probes, force probes, magnetic probes, humidity probes, acoustic probes, radiation probes, color probes, taste probes, and video probes.
[0003] In actual detection processes, probes may be damaged or used to detect different physical or chemical properties, so it is necessary to replace the probe in a timely manner. Most existing probes are integrally molded and difficult to replace, resulting in complete scrapping and excessive costs. Therefore, a low-cost probe assembly is proposed to solve the above problems. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] The purpose of this invention is to solve the problems of existing probes being mostly integrally molded, making them difficult to replace, resulting in overall scrapping and excessive costs, and to propose a low-cost probe assembly.
[0006] (II) Technical Solution
[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:
[0008] A low-cost probe assembly includes a probe tube with a detachable sealing cap at its top end. The sealing cap has a hollow threaded portion at its rear end. A sleeve nut is threaded onto the outer side of the hollow threaded portion. A PU tube is fixedly connected to the rear end of the sleeve nut. A wire harness is provided inside the PU tube, and one end of the wire harness passes through the hollow threaded portion and connects to the probe tube.
[0009] Based on the above technical solution, the present invention can be further improved as follows.
[0010] Preferably, the top end of the probe tube is provided with a plurality of first threaded holes, and the sealing cap is provided with a plurality of second threaded holes that are respectively adapted to the plurality of first threaded holes. The inner side of the second threaded hole is threaded with a bolt extending to the inner side of the first threaded hole, and the bolt is threaded to the inner side of the first threaded hole.
[0011] Preferably, a wire harness sealing ring is provided on the inner side of the PU tube, and the wire harness sealing ring is sleeved on the outer side of the wire harness.
[0012] (III) Beneficial Effects
[0013] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:
[0014] 1. This utility model, by setting a detachable design for the sealing cover and the detection tube, allows for the individual replacement of damaged parts, avoids overall scrapping, and reduces maintenance costs.
[0015] 2. This utility model integrates the functions of a sealing cap and a wire harness channel by setting a hollow threaded part, reducing redundant parts, and the threaded connection provides a stable mechanical fixation to prevent loosening or leakage.
[0016] 3. This utility model provides physical protection and flexible support by setting up a PU tube to wrap the wire harness, adapting to bending or vibration environments. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram showing the relative positional relationship between the probe tube and the first threaded hole of this utility model;
[0019] Figure 3 This is a schematic diagram showing the relative positional relationship between the sealing cap and the second threaded hole of this utility model;
[0020] Figure 4 This is a schematic diagram showing the relative positional relationship between the wire harness and the wire harness sealing ring of this utility model.
[0021] In the diagram: 1. Detector tube; 2. Sealing cap; 3. Hollow threaded part; 4. Sleeve nut; 5. PU tube; 6. Wire harness; 7. First threaded hole; 8. Second threaded hole; 9. Bolt; 10. Wire harness sealing ring. Detailed Implementation
[0022] 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.
[0023] In the embodiments, by Figure 1-4A low-cost probe assembly is provided, comprising a probe tube 1, a sealing cap 2 detachably connected to the top end of the probe tube 1, a hollow threaded portion 3 provided at the rear end of the sealing cap 2, a sleeve nut 4 threadedly connected to the outer side of the hollow threaded portion 3, a PU tube 5 fixedly connected to the rear end of the sleeve nut 4, a wire harness 6 provided inside the PU tube 5, and one end of the wire harness 6 passing through the hollow threaded portion 3 and connected to the probe tube 1.
[0024] With the above setup, the probe tube 1, as the core sensing component, directly contacts or approaches the measured medium to collect physical quantities (such as temperature and pressure). The wiring harness 6 extends from the probe tube 1, passes through the hollow threaded portion 3 of the sealing cover 2, and extends into the PU tube 5, ultimately connecting to external devices (such as controllers or displays) to complete signal transmission. When it is necessary to replace the probe tube 1 or inspect its internal components, the sealing cover 2 can be removed by unscrewing the threaded connection between the sleeve nut 4 and the hollow threaded portion 3, allowing direct contact with the probe tube 1. The sleeve nut 4 secures the hollow threaded portion 3 and the PU tube 5 with its threads, ensuring a stable connection. The PU tube 5 wraps around the wiring harness 6, providing physical protection and flexible support to adapt to bending or vibration environments. The sealing cover 2 and the probe tube 1 are designed to be detachable. This design allows for individual replacement of damaged parts, avoiding complete scrapping and reducing maintenance costs. The PU tube 5 wraps around the wire harness 6, shielding it from external electromagnetic interference and protecting it from mechanical damage through its flexibility and abrasion resistance, thus extending its service life. PU material is also inexpensive. The hollow threaded part 3 integrates the sealing cap 2 and the wire harness channel function, reducing redundant parts. The threaded connection provides a stable mechanical fixation, preventing loosening or leakage. It should be noted that the detection tube 1 contains a thermal probe or force probe that can measure temperature or pressure signals. The specific detection process is common knowledge known to those skilled in the art and will not be elaborated further. It should also be noted that the PU tube 5 can be a polyether-type PU tube, which is resistant to urea.
[0025] Reference Figure 1-4 The probe tube 1 has several first threaded holes 7 at its top end, and the sealing cover 2 has several second threaded holes 8 that are adapted to the several first threaded holes 7 respectively. The inner side of the second threaded hole 8 is threaded with a bolt 9 that extends to the inner side of the first threaded hole 7. The bolt 9 is threaded to the inner side of the first threaded hole 7.
[0026] Through the above structural design, the sealing cover 2 and the probe tube 1 are connected by bolts 9 with multiple first threaded holes 7 and second threaded holes 8, so as to achieve uniform force and fastening, avoid single-point stress concentration, and improve the sealing performance by pressing the contact surface with bolts to prevent media leakage. The independently operable bolts 9 allow the tightness of the sealing cover 2 to be adjusted in steps, which is convenient for precise alignment during installation or partial disassembly during maintenance (e.g., loosening only some bolts), reducing the frequency of overall disassembly and reducing maintenance complexity. The standardized design of the first threaded holes 7 and the second threaded holes 8 (such as uniform hole diameter and spacing) simplifies the processing technology and is compatible with general bolts 9, eliminating the need for customized special fasteners and reducing production and spare parts costs.
[0027] Reference Figure 1-4 The inner side of the PU tube 5 is provided with a wire harness sealing ring 10, and the wire harness sealing ring 10 is sleeved on the outer side of the wire harness 6.
[0028] With the above structural design, the wire harness sealing ring 10 is sleeved on the outside of the wire harness 6 and tightly fitted with the inside of the PU tube 5 to form a multi-layer sealing interface, which can effectively prevent external pollutants such as water vapor, dust, and oil from entering the pipeline and avoid safety hazards such as short circuits and leakage caused by corrosion or moisture in the wire harness insulation layer.
[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A low-cost probe assembly, characterized in that, The device includes a probe tube (1), the top of which is detachably connected to a sealing cap (2). The rear end of the sealing cap (2) is provided with a hollow threaded part (3). The outer side of the hollow threaded part (3) is threaded with a sleeve nut (4). The rear end of the sleeve nut (4) is fixedly connected to a PU tube (5). The inner side of the PU tube (5) is provided with a wire harness (6). One end of the wire harness (6) passes through the hollow threaded part (3) and is connected to the probe tube (1).
2. The low-cost probe assembly according to claim 1, characterized in that: The top end of the probe tube (1) is provided with several first threaded holes (7), and the sealing cover (2) is provided with several second threaded holes (8) that are respectively adapted to several first threaded holes (7). The inner side of the second threaded hole (8) is threadedly connected to a bolt (9) that extends to the inner side of the first threaded hole (7). The bolt (9) is threadedly connected to the inner side of the first threaded hole (7).
3. The low-cost probe assembly according to claim 1, characterized in that: The inner side of the PU tube (5) is provided with a wire harness sealing ring (10), and the wire harness sealing ring (10) is sleeved on the outer side of the wire harness (6).