An adjustable metal connector
By designing adjustable inner diameter components and disassembly components, the problem of existing metal fittings being unable to adapt to various pipe diameters has been solved, enabling flexible adjustment of the inner diameter of the metal fitting and quick replacement of the sleeve, thus improving adaptability and operational efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGTAI LANRUI METAL PRODUCTS CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-07-17
AI Technical Summary
Existing adjustable metal fittings cannot be fitted with different sleeves according to actual needs, resulting in them being unable to adapt to metal pipes of various diameters and only suitable for connection scenarios of a single specification.
An adjustable inner diameter assembly was designed. A rocker arm drives a lead screw to rotate, which in turn moves a moving block axially. An arc-shaped disk and a connecting block push the sleeve to slide on the inner wall of the metal joint, thus achieving flexible adjustment of the inner diameter. The sleeve can be quickly replaced by disassembling the assembly and using a spring and slider structure.
It enables flexible adjustment of the inner diameter of the metal connector, can adapt to different pipe diameters, and the sleeve replacement operation is simple and efficient.
Smart Images

Figure CN224516155U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of adjustable metal connector technology, and in particular to an adjustable metal connector. Background Technology
[0002] Metal joints are fundamental components in fields such as mechanical engineering, piping systems, and aerospace. Their core function is to achieve reliable connection, force transmission, or fluid transfer between different components. With the development of industrial technology, their application scenarios have gradually expanded from simple pipe connections (such as building water supply and drainage) to complex scenarios such as high-pressure hydraulic systems, precision instruments, and new energy equipment. The technical requirements have also been upgraded from "single fixed connection" to "multifunctional dynamic adaptation".
[0003] The applicant discovered through a search that a Chinese patent, "An Adjustable Metal Connector," with publication (announcement) number "CN205173766U," is available. This patent features a simple structure, convenient installation, and good sealing. The design of the locking and limiting connecting sleeves effectively prevents damage caused by continuous friction between the two connecting metal pipes. The abutment not only adjusts the size between the lubricating metal connector and the connecting metal pipe but also prevents friction damage between them. However, this patent does not allow for the replacement of different sleeve specifications to achieve flexible adjustment of the inner diameter of the metal connector. In actual use, it may not be able to adapt to metal pipes of various diameters and can only be used for single-specification connection scenarios. Therefore, we propose an adjustable metal connector. Utility Model Content
[0004] The purpose of this utility model is to provide an adjustable metal connector to solve the problem mentioned in the background art that it is impossible to replace different specifications of sleeves according to actual needs, so as to achieve flexible adjustment of the inner diameter of the metal connector. In actual use, it may be impossible to adapt to metal pipes of various diameters and can only be used for connection scenarios of a single specification.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable metal connector, including a base, a metal connector body fixedly connected to the top of the base, an adjustable inner diameter assembly provided on the outside of the metal connector body, the adjustable inner diameter assembly including a rocker arm, a bearing, a fixed rod and a sleeve, the rocker arm being connected to a moving block via a lead screw, the moving block being connected to a connecting block and a top block via an arc-shaped disk, the bearing being fixedly installed on the bottom inner wall of the base, and the outer wall of the rocker arm being fixedly connected to the inner wall of the bearing.
[0006] As a preferred embodiment, the upper end of the rocker arm is fixedly connected to the lower end of the lead screw, the outer wall of the rocker arm is rotatably connected to the inner wall of the base, and two sets of movable blocks are provided. One set of movable blocks has its inner wall threadedly connected to the outer wall of the lead screw, and the other set of movable blocks has its inner wall slidably connected to the outer wall of the fixed rod.
[0007] As a preferred embodiment, the corresponding sides of the two sets of moving blocks are respectively fixedly connected to the two sides of the arc-shaped disk, the bottom of the connecting block is fixedly connected to the top of the arc-shaped disk, and the bottom of the top block is fixedly connected to the top of the connecting block.
[0008] As a preferred embodiment, the fixing rod is fixedly installed on the top right side of the base, the sleeve is disposed at the bottom of the top block, the outer wall of the sleeve is slidably connected to the inner wall of the metal connector body, and the inner wall of the arc-shaped disk is slidably connected to the outer wall of the metal connector body.
[0009] As a preferred embodiment, the top block is provided with a disassembly assembly, which includes an insert block and a slider. A groove is provided on the top of the top block. The insert block is fixedly installed on the top of the sleeve. The slider is slidably connected to the inner wall of the groove. A sliding rod is fixedly connected to the left outer wall of the slider.
[0010] As a preferred embodiment, the outer wall of the slide rod is slidably connected to the left inner wall of the top block, a spring is sleeved on the outside of the slide rod, one end of the spring is fixedly connected to the left outer wall of the slider, the other end of the spring is fixedly connected to the left inner wall of the top block, and an embedding block is connected to the right outer wall of the slider, the outer wall of the embedding block is slidably connected to the inner wall of the insert block.
[0011] The technical effects and advantages of this utility model are as follows:
[0012] 1. With the adjustable inner diameter component, the operator manually turns the rocker to drive the lead screw to rotate synchronously. When the lead screw rotates, it drives the moving block to move axially. The thrust is transmitted to the top block through the arc-shaped disk and connecting block, which pushes the sleeve to slide on the inner wall of the metal joint body. Thus, the inner diameter of the metal joint body is adjusted according to the position of the sleeve. According to actual needs, the operator can replace the sleeve with different specifications to achieve flexible adjustment of the inner diameter of the metal joint body.
[0013] 2. With the set disassembly components, the operator can push the slider with the spring to make the insert block automatically snap into the inner wall of the insert block to form a stable connection. When disassembling, the operator only needs to pull the slider to the left. At this time, the slider will move to the left, the spring will be compressed, and the insert block will be disengaged from the insert block, which can quickly separate the sleeve and the top block. This makes the operation simpler and more efficient when the operator replaces the sleeve. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0015] Figure 2 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 3 This is a schematic diagram of the adjustable inner diameter component of this utility model;
[0017] Figure 4 for Figure 3 Partial structural diagram;
[0018] Figure 5 This is a schematic diagram of the overall partial structure of this utility model;
[0019] Figure 6 for Figure 3 Enlarged structural diagram at point A in the middle;
[0020] Figure 7 This is a schematic diagram of the disassembly component structure of this utility model;
[0021] Figure 8 for Figure 1 Enlarged structural diagram at point B.
[0022] In the diagram: 1. Base; 2. Metal connector body; 3. Adjustable inner diameter assembly; 301. Rocker arm; 302. Lead screw; 303. Moving block; 304. Arc-shaped disc; 305. Connecting block; 306. Top block; 307. Fixing rod; 308. Bearing; 309. Sleeve; 4. Disassembly assembly; 401. Slide groove; 402. Insert block; 403. Slider; 404. Slide rod; 405. Spring; 406. Embedded block. Detailed Implementation
[0023] 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.
[0024] Please see the appendix Figure 1 - Appendix Figure 6 and appendix Figure 8An adjustable metal connector includes a base 1, a metal connector body 2 fixedly connected to the top of the base 1, and an adjustable inner diameter assembly 3 disposed on the outside of the metal connector body 2. The adjustable inner diameter assembly 3 includes a rocker arm 301, a bearing 308, a fixed rod 307, and a sleeve 309. The rocker arm 301 is connected to a moving block 303 via a lead screw 302. The moving block 303 is connected to a connecting block 305 and a top block 306 via an arc-shaped disk 304. The bearing 308 is fixedly installed on the bottom inner wall of the base 1. The outer wall of the rocker arm 301 is fixedly connected to the inner wall of the bearing 308. The upper end of the rocker arm 301 is fixedly connected to the lower end of the lead screw 302. The outer wall of the rocker arm 301 is rotatably connected to the inner wall of the base 1. The wall has two sets of movable blocks 303. The inner wall of one set of movable blocks 303 is threaded to the outer wall of the lead screw 302, and the inner wall of the other set of movable blocks 303 is slidably connected to the outer wall of the fixed rod 307. The corresponding sides of the two sets of movable blocks 303 are respectively fixedly connected to the two sides of the arc-shaped disk 304. The bottom of the connecting block 305 is fixedly connected to the top of the arc-shaped disk 304. The bottom of the top block 306 is fixedly connected to the top of the connecting block 305. The fixed rod 307 is fixedly installed on the top right side of the base 1. The sleeve 309 is set at the bottom of the top block 306. The outer wall of the sleeve 309 is slidably connected to the inner wall of the metal connector body 2. The inner wall of the arc-shaped disk 304 is slidably connected to the outer wall of the metal connector body 2.
[0025] A groove is provided at the bottom of the base 1, and the bearing 308 is installed inside the groove. One set of moving blocks 303 moves along the thread of the lead screw 302, and another set of moving blocks 303 slides along the fixed rod 307. This ensures that the two sides of the arc-shaped disk 304 move synchronously and avoids jamming or deviation.
[0026] Specifically, through the adjustable inner diameter component 3, the operator manually rotates the rocker arm 301, causing the lead screw 302 to rotate synchronously. When the lead screw 302 rotates, it drives the moving block 303 to move axially. The thrust is transmitted to the top block 306 through the arc-shaped disk 304 and the connecting block 305, pushing the sleeve 309 to slide on the inner wall of the metal connector body 2. Thus, the inner diameter of the metal connector body 2 is adjusted as the position of the sleeve 309 changes. According to actual needs, the operator can replace the sleeve 309 of different specifications to achieve flexible adjustment of the inner diameter of the metal connector body 2.
[0027] Please see the appendix Figure 1 Appendix Figure 5 -Appendix Figure 8The top block 306 is internally provided with a disassembly assembly 4, which includes an insert block 402 and a slider 403. The top of the top block 306 is provided with a groove 401. The insert block 402 is fixedly installed on the top of the sleeve 309. The slider 403 is slidably connected to the inner wall of the groove 401. A slide rod 404 is fixedly connected to the left outer wall of the slider 403. The outer wall of the slide rod 404 is slidably connected to the left inner wall of the top block 306. A spring 405 is sleeved on the outside of the slide rod 404. One end of the spring 405 is fixedly connected to the left outer wall of the slider 403, and the other end of the spring 405 is fixedly connected to the left inner wall of the top block 306. An embedded block 406 is connected to the right outer wall of the slider 403. The outer wall of the embedded block 406 is slidably connected to the inner wall of the insert block 402.
[0028] By sliding the slider 403 within the groove 401, and with the linear guidance of the slide rod 404, the embedded block 406 and the insertion block 402 can be precisely aligned, avoiding misalignment caused by tilting.
[0029] Specifically, through the disassembly component 4, the operator can push the slider 403 with the spring 405, causing the insert block 406 to automatically engage with the inner wall of the insert block 402, forming a stable connection. During disassembly, the operator only needs to pull the slider 403 to the left. At this time, the slide bar 404 will move to the left, the spring 405 will be compressed, and the insert block 406 will exit the insert block 402, thus quickly separating the sleeve 309 from the top block 306. This makes it simpler and more efficient for the operator to replace the sleeve 309.
[0030] Working principle of this utility model: This utility model is an adjustable metal joint. First, the operator manually rotates the rocker arm 301. Its outer wall rotates stably on the inner wall of the base 1 through the bearing 308. The rotation of the rocker arm 301 will drive the lead screw 302 to rotate synchronously, converting the circular motion into linear motion. The lead screw 302 drives one set of moving blocks 303 to move along its thread axis, and another set of moving blocks 303 slides along the fixed rod 307. The two sets of moving blocks 303 are connected by an arc-shaped disk 304 to ensure synchronous translation on both sides. The arc-shaped disk 304 pushes the top block 306 through the connecting block 305, driving the sleeve. Sleeve 309 slides on the inner wall of the metal connector body 2. The displacement of sleeve 309 changes the effective inner diameter of the metal connector body 2. The operator can use this method to replace sleeves 309 with different inner diameters to achieve pipe diameter adaptation in different ranges. Then, when the operator needs to replace sleeve 309, the operator pulls slider 403 to the left, spring 405 will be compressed, slide rod 404 will also move to the left, insert block 406 will disengage from insert block 402, and the locking state will be released. The operator can then remove sleeve 309 from the bottom of top block 306. The operation of installing sleeve 309 is the same.
[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.
Claims
1. An adjustable metal connector, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a metal connector body (2). An adjustable inner diameter assembly (3) is provided on the outside of the metal connector body (2). The adjustable inner diameter assembly (3) includes a rocker arm (301), a bearing (308), a fixing rod (307), and a sleeve (309). The rocker arm (301) is connected to a moving block (303) through a lead screw (302). The moving block (303) is connected to a connecting block (305) and a top block (306) through an arc-shaped disk (304). The bearing (308) is fixedly installed on the bottom inner wall of the base (1). The outer wall of the rocker arm (301) is fixedly connected to the inner wall of the bearing (308).
2. An adjustable metal joint according to claim 1, wherein: The upper end of the rocker arm (301) is fixedly connected to the lower end of the lead screw (302), and the outer wall of the rocker arm (301) is rotatably connected to the inner wall of the base (1). There are two sets of moving blocks (303). The inner wall of one set of moving blocks (303) is threadedly connected to the outer wall of the lead screw (302), and the inner wall of the other set of moving blocks (303) is slidably connected to the outer wall of the fixed rod (307).
3. An adjustable metal joint according to claim 2, wherein: The two sets of moving blocks (303) are respectively fixedly connected to the two sides of the arc disk (304) on their corresponding sides. The bottom of the connecting block (305) is fixedly connected to the top of the arc disk (304), and the bottom of the top block (306) is fixedly connected to the top of the connecting block (305).
4. An adjustable metal joint according to claim 3, wherein: The fixing rod (307) is fixedly installed on the top right side of the base (1), the sleeve (309) is set at the bottom of the top block (306), the outer wall of the sleeve (309) is slidably connected to the inner wall of the metal connector body (2), and the inner wall of the arc-shaped disk (304) is slidably connected to the outer wall of the metal connector body (2).
5. An adjustable metal joint according to claim 4, wherein: The top block (306) is provided with a disassembly assembly (4), which includes an insert block (402) and a slider (403). The top of the top block (306) is provided with a sliding groove (401). The insert block (402) is fixedly installed on the top of the sleeve (309). The slider (403) is slidably connected to the inner wall of the sliding groove (401). A sliding rod (404) is fixedly connected to the left outer wall of the slider (403).
6. An adjustable metal joint according to claim 5, wherein: The outer wall of the slide rod (404) is slidably connected to the left inner wall of the top block (306). A spring (405) is sleeved on the outside of the slide rod (404). One end of the spring (405) is fixedly connected to the left outer wall of the slider (403), and the other end of the spring (405) is fixedly connected to the left inner wall of the top block (306). An embedded block (406) is connected to the right outer wall of the slider (403), and the outer wall of the embedded block (406) is slidably connected to the inner wall of the insert block (402).