A quick locking device for a meter connection interface
By combining locking and dustproof components, the instrument connection interface is quickly locked and dustproofed, solving the problem of poor locking effect after frequent plugging and unplugging of traditional interfaces, and improving the stability and contact of the connector.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO HENGJIE TESTING TECH CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional instrument connection interfaces use friction to limit and lock the connectors. However, frequent plugging and unplugging can lead to poor locking performance and affect the contact of the connectors.
The design incorporates locking and dustproof components, including a connector tube, spring, locking block, and sealing strip, to achieve quick locking and dustproofing of the joint. The spring force and the sealing strip's sealing performance enhance locking stability.
It improves the locking stability of the connector, ensures good contact, and solves the problem of poor locking effect of traditional interfaces after frequent plugging and unplugging.
Smart Images

Figure CN224537479U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of instrument connection technology, and specifically relates to a quick locking device for an instrument connection interface. Background Technology
[0002] An instrument is a device used to measure, display, or control various physical quantities, and is widely used in industries such as industry, energy, and transportation. Its core functions include data acquisition, processing, and transmission; common types include pressure gauges, thermometers, and flow meters. The instrument's connection interface is a key component for communication with external systems; interface design must consider compatibility, interference resistance, and protection levels to adapt to different environments. Modern instruments also support wireless interfaces, enhancing deployment flexibility.
[0003] When a plug is inserted into an instrument connection interface, it is usually locked by friction with the inner wall of the interface. However, after the plug is frequently inserted and removed over a long period of time, both the plug and the inner wall of the interface will wear down, reducing the friction and resulting in poor locking effect, which affects the contact of the plug. Utility Model Content
[0004] The purpose of this invention is to provide a quick locking device for instrument connection interfaces, which aims to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A quick-locking device for an instrument connection interface, comprising,
[0007] The instrument mechanism includes an instrument body, a mounting rod fixedly installed at the bottom of the instrument body, and a connector inserted into the surface of the instrument body;
[0008] The installation mechanism includes a locking component for quick locking of the connector and a dustproof component for dust protection at the connector connection.
[0009] As a preferred embodiment of this utility model, the locking component includes a plug tube fixedly installed on the surface of the instrument body for connector insertion, two slots formed on the surface of the plug tube, a spring disposed inside the slots, a locking block fixedly installed on the end face of the spring, and a locking groove formed on the surface of the connector and engaging with the locking block.
[0010] In a preferred embodiment of this utility model, a movable block is slidably connected inside the hollow groove, and a positioning block is fixedly installed on the surface of the movable block.
[0011] As a preferred embodiment of this utility model, the dustproof component includes an outer cylinder threaded onto the surface of the insertion tube, a sealing strip fixedly installed on the surface of the connector, and a sealing groove formed on one side of the outer cylinder and used in conjunction with the sealing strip.
[0012] In a preferred embodiment of this utility model, the sealing strip has a semi-circular cross-section, and the sealing strip and the sealing groove fit together.
[0013] As a preferred embodiment of this utility model, the inner surface of the insertion tube is provided with a first annular groove and a second annular groove, and the end of the positioning block is engaged with the inside of the first annular groove.
[0014] In a preferred embodiment of this utility model, both the end of the locking block and the inner wall of the locking groove are curved.
[0015] Compared with the prior art, the beneficial effects of this utility model are: by cooperating with the locking component and the dustproof component, the connector is quickly locked and dustproofed, which solves the problem that traditional instrument connection interfaces mostly use friction to limit and lock the connector, resulting in poor connector locking effect after frequent plugging and unplugging. This achieves the effect of improving the stability of connector locking and ensuring good contact of the connector. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the installation mechanism structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the locking component and dustproof component of this utility model;
[0020] Figure 4 This utility model Figure 3 A magnified view of a portion of point A in the middle.
[0021] In the diagram: 100, Instrument mechanism; 110, Instrument body; 120, Mounting rod; 130, Connector; 200, Mounting mechanism; 210, Locking component; 211, Insertion pipe; 212, Empty groove; 213, Spring; 214, Locking block; 215, Locking groove; 216, Movable block; 217, Positioning block; 218, First annular groove; 219, Second annular groove; 220, Dustproof component; 221, Outer cylinder; 222, Sealing strip; 223, Sealing groove. Detailed Implementation
[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0024] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.
[0025] Example
[0026] Reference Figure 1-4 This embodiment of the present invention provides a quick locking device for an instrument connection interface, comprising:
[0027] The instrument mechanism 100 includes an instrument body 110, a mounting rod 120 fixedly installed at the bottom of the instrument body 110, and a connector 130 inserted into the surface of the instrument body 110.
[0028] The mounting mechanism 200 includes a locking component 210 for quick locking of the connector 130 and a dustproof component 220 for dustproofing the connection of the connector 130.
[0029] The locking component 210 and the dustproof component 220 work together to quickly lock the connector 130 and prevent dust from entering the connector 130. This solves the problem that traditional instrument connection interfaces often use friction to limit and lock the connector, which leads to poor locking effect after frequent plugging and unplugging. This improves the stability of connector locking and ensures good contact of the connector.
[0030] Specifically, the locking component 210 includes a plug tube 211 fixedly installed on the surface of the instrument body 110 and used for insertion into the connector 130, two slots 212 formed on the surface of the plug tube 211, a spring 213 disposed inside the slots 212, a locking block 214 fixedly installed on the end face of the spring 213, and a locking groove 215 formed on the surface of the connector 130 and engaged with the locking block 214.
[0031] Furthermore, a movable block 216 is slidably connected inside the slot 212, and a positioning block 217 is fixedly installed on the surface of the movable block 216.
[0032] Preferably, the dustproof component 220 includes an outer cylinder 221 threaded onto the surface of the insertion tube 211, a sealing strip 222 fixedly mounted onto the surface of the connector 130, and a sealing groove 223 formed on one side of the outer cylinder 221 and used in conjunction with the sealing strip 222.
[0033] The sealing strip 222 and the sealing groove 223 work together to increase the sealing of the contact surface between the outer cylinder 221 and the connector 130, thereby preventing dust from entering the interior of the insertion pipe 211 through the gap between the two and avoiding poor contact of the connector 130.
[0034] Furthermore, the cross-section of the sealing strip 222 is semi-circular, and the sealing strip 222 and the sealing groove 223 fit together.
[0035] Specifically, the inner surface of the insertion tube 211 is provided with a first annular groove 218 and a second annular groove 219, and the end of the positioning block 217 is engaged with the inside of the first annular groove 218.
[0036] The first annular groove 218 and the second annular groove 219 are used to lock and limit the positioning block 217, thereby improving the stability of the movable block 216 inside the empty groove 212 and thus improving the stability of the locking block 214 locked inside the locking groove 215.
[0037] Furthermore, the ends of the locking block 214 and the inner walls of the locking groove 215 are both curved.
[0038] The locking block 214 and the inner wall of the locking groove 215 are both arc-shaped to facilitate the insertion and removal of the connector 130.
[0039] In use, the end of connector 130 is inserted into the inside of connector tube 211, so that connector 130 is connected to the interface of instrument body 110. Since the end of connector 130 is chamfered, connector 130 presses against locking block 214. After locking block 214 is pressed, it is stored in the inside of empty groove 212. Spring 213 is in a compressed state. When locking groove 215 moves to locking block 214, spring 213 releases its elastic force, which pops locking block 214 open, so that its end is locked in the inside of locking groove 215, which can quickly lock connector 130.
[0040] After the connector 130 is locked, rotate the outer cylinder 221 so that the outer cylinder 221 moves closer to the connector 130. When one side of the outer cylinder 221 contacts the connector 130, the sealing strip 222 is engaged inside the sealing groove 223, and the end of the positioning block 217 disengages from the second annular groove 219 and is engaged inside the first annular groove 218.
[0041] In summary, the locking component 210 and the dustproof component 220 work together to quickly lock the connector 130 and prevent dust from entering it. This solves the problem that traditional instrument connection interfaces often rely on friction to limit and lock the connector, which leads to poor locking performance after frequent insertion and removal. This improves the stability of connector locking and ensures good contact between the connectors.
[0042] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.
[0043] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.
[0044] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.
[0045] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A quick-locking device for an instrument connection interface, characterized in that: include, The instrument mechanism (100) includes an instrument body (110), a mounting rod (120) fixedly installed at the bottom of the instrument body (110), and a connector (130) inserted into the surface of the instrument body (110); The mounting mechanism (200) includes a locking component (210) for quick locking of the connector (130) and a dustproof component (220) for dustproofing the connection of the connector (130).
2. The quick-locking device for an instrument connection interface according to claim 1, characterized in that: The locking component (210) includes a plug tube (211) fixedly installed on the surface of the instrument body (110) and used for plugging into the connector (130), two slots (212) opened on the surface of the plug tube (211), a spring (213) disposed inside the slot (212), a locking block (214) fixedly installed on the end face of the spring (213), and a locking groove (215) opened on the surface of the connector (130) and engaged with the locking block (214).
3. The quick-locking device for an instrument connection interface according to claim 2, characterized in that: The interior of the slot (212) is slidably connected to a movable block (216), and a positioning block (217) is fixedly installed on the surface of the movable block (216).
4. The quick-locking device for an instrument connection interface according to claim 3, characterized in that: The dustproof component (220) includes an outer cylinder (221) threaded onto the surface of the insertion tube (211), a sealing strip (222) fixedly mounted on the surface of the connector (130), and a sealing groove (223) opened on one side of the outer cylinder (221) and used in conjunction with the sealing strip (222).
5. A quick-locking device for an instrument connection interface according to claim 4, characterized in that: The sealing strip (222) has a semi-circular cross section, and the sealing strip (222) and the sealing groove (223) fit together.
6. The quick-locking device for an instrument connection interface according to claim 5, characterized in that: The inner surface of the insertion tube (211) is provided with a first annular groove (218) and a second annular groove (219), and the end of the positioning block (217) is engaged inside the first annular groove (218).
7. A quick-locking device for an instrument connection interface according to claim 6, characterized in that: The ends of the locking block (214) and the inner walls of the locking groove (215) are both arc-shaped.