A QBH joint connecting mechanism and a welding gun

Abstract

The utility model discloses a QBH joint connecting mechanism and welding torch, including QBH locking sleeve, locking nut and anti -loose fixed component, the locking nut is covered in the outside of QBH locking sleeve and is connected with QBH locking sleeve rotation, the locking nut is used for the locking of QBH joint, the anti -loose fixed component is covered in the outside of locking nut, is used for fixing and preventing the locking nut loosening. The utility model solves the locking nut loosening problem caused by the optical fiber dragging, vibration or environmental factor during the use of QBH joint, the anti -loose fixed component is independently arranged, avoids only relying on the friction of locking nut itself anti -loose, improves the stability and security of overall system.

Description

Technical Field

[0001] This utility model relates to the field of welding torch technology, and more specifically, to a QBH connector connection mechanism and a welding torch. Background Technology

[0002] A laser generator includes a pump source, beam combiner, gain fiber, output fiber, and output head. Output heads come in various structural forms such as QBH, QD, and QCS. The QBH output connector is widely used in low-to-medium power laser generators due to its ease of installation and simple structure. However, the QBH output connector is a standard interface designed specifically for high-power fiber laser systems. Due to its inherent structure, the QBH connector is susceptible to loosening of the locking mechanism during use due to being dragged by the fiber armor. This can cause the output head safety interlock switch to trip, triggering the machine to stop outputting light and triggering an alarm shutdown. After the laser generator alarms, the QBH connector needs to be manually reset and tightened, significantly reducing production efficiency and potentially leading to economic losses. Furthermore, regardless of the environment, cutting, welding, or cleaning processes typically involve large amounts of metal dust. Over time, this dust accumulates in the gaps of the QBH locking mechanism, making it difficult to clean during maintenance. This metal dust contaminates the lenses, and in severe cases, can burn out the laser head and laser generator, causing significant losses to customers.

[0003] To address these issues, a QBH connector connection mechanism is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a QBH connector connection mechanism and welding torch to overcome the above-mentioned defects in the prior art.

[0005] The first technical solution to achieve the purpose of this utility model is: a QBH connector connection mechanism, including a QBH locking sleeve, a locking nut and an anti-loosening fixing component. The locking nut is sleeved on the outside of the QBH locking sleeve and rotatably connected to the QBH locking sleeve. The locking nut is used to lock the QBH connector. The anti-loosening fixing component is sleeved on the outside of the locking nut and is used to fix and prevent the locking nut from loosening.

[0006] In a preferred embodiment, the anti-loosening fixing assembly includes an anti-loosening fixing body one and an anti-loosening fixing body two, wherein one end of the anti-loosening fixing body one and the other end are hinged together and the other end is fixedly connected by screws.

[0007] In a preferred embodiment, both the first and second anti-loosening fixing bodies have a section with an arc surface that matches the locking nut.

[0008] In a preferred embodiment, the QBH locking sleeve and the welding torch housing form an annular region, which is located axially on one side of the end of the locking nut. The width of the annular region changes according to the rotation of the locking nut. When the locking nut loosens, the width of the annular region decreases. The arc surfaces of the first and second anti-loosening fixing bodies are also provided with arc surface limiting ribs, which can be inserted into the annular region to prevent the locking nut from loosening.

[0009] In a preferred embodiment, a dustproof sleeve is also provided between the first anti-loosening fixing body and the second anti-loosening fixing body and the locking nut.

[0010] In a preferred embodiment, both the first and second anti-loosening fixing bodies are provided with a limiting groove and a limiting pin adapted to the limiting groove, and one section of the dustproof sleeve is located in the gap between the limiting groove and the limiting pin.

[0011] In a preferred embodiment, the surface of the locking nut is provided with friction texture.

[0012] The second technical solution to achieve the purpose of this utility model is: a welding torch, including a housing, the housing including a handheld part, and the bottom of the handheld part is equipped with a QBH connector locking mechanism as described above.

[0013] By adopting the above technical solution, this utility model has the following beneficial effects:

[0014] (1) This utility model solves the problem of loosening of the locking nut of QBH connector due to fiber optic dragging, vibration or environmental factors during use; the anti-loosening fixing component is set independently, avoiding the reliance on the friction force of the locking nut itself to prevent loosening, thus improving the stability and safety of the overall system.

[0015] (2) This utility model uses a hinge structure to allow the anti-loosening fixing component to open and close like a "clamp", which can be easily fitted onto the locking nut. The screw connection method can be used to finely adjust the installation position according to different sizes of locking nuts, improving adaptability. It adopts a split mechanical structure, has a mature manufacturing process, and is suitable for mass production.

[0016] (3) The arc surface design of the anti-loosening fixing component of this utility model can better match the shape of the locking nut, increase the contact area, reduce local stress concentration, and the good fit helps to enhance the overall constraint force of the anti-loosening component on the locking nut. By adjusting the arc radius, it can be adapted to locking nuts of different diameters.

[0017] (4) When the locking nut of this utility model is loose, the annular area becomes narrower and the limiting rib automatically embeds into it to form a physical block, further preventing the nut from loosening; further, the mechanical locking formed by the engagement of the limiting rib and the annular area prevents loosening through friction.

[0018] (5) The dustproof sleeve of this utility model protects the QBH connector, greatly reducing the entry of dust, reducing the risk of metal dust entering the gaps and causing pollution and wear, and improving service life.

[0019] (6) The limiting groove and the limiting pin of this utility model cooperate to ensure that the anti-loosening component will not shift or slide after installation, and can also further strengthen the fixation of the dustproof cover.

[0020] (7) The friction texture design of this utility model makes it less likely for the operator to slip when tightening / loosening by hand or tool, improving the convenience and safety of operation, and further improving the friction between the anti-loosening fixing component and the locking nut, resulting in a better fixing effect. Attached Figure Description

[0021] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0022] Figure 1 This is a perspective view of the present invention.

[0023] Figure 2 This is a 3D view of the QBH locking sleeve and locking nut.

[0024] Figure 3 A 3D view of the anti-loosening fastening components.

[0025] Figure 4 This is a 3D view of the welding torch.

[0026] Figure 5 This is a partially enlarged schematic diagram of the present invention.

[0027] The labels in the attached diagram are as follows: 1. QBH locking sleeve; 1-1. Annular area; 2. Locking nut; 3. Anti-loosening fixing component; 3-1. Anti-loosening fixing body one; 3-2. Anti-loosening fixing body two; 3-3. Limiting pin; 3-4. Arc-shaped limiting rib; 3-5. Limiting groove; 4. Dustproof sleeve; 5. Outer shell; 5-1. Handhold part. Detailed Implementation

[0028] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of the embodiments of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this utility model and should not be used to limit the scope of protection of this utility model.

[0034] (Example 1)

[0035] The QBH output connector is a standard interface designed specifically for high-power fiber laser systems. Due to its structural design, the QBH connector is easily pulled by the armored cable of the optical fiber during use, causing the QBH locking mechanism to loosen. This results in the output head safety interlock switch being disconnected, triggering the machine to stop emitting light and triggering an alarm shutdown. After the laser generator alarms, the QBH connector needs to be manually reset and locked, which greatly reduces production efficiency.

[0036] To address the aforementioned problems, this embodiment proposes a welding torch, see [link to document]. Figure 4 It includes a housing 5, which includes a handheld part 5-1. The bottom of the handheld part 5-1 is equipped with a QBH connector connection mechanism for reinforcing the QBH connector and preventing accidental loosening.

[0037] See Figure 1 and Figure 3 A QBH connector connection mechanism includes a QBH locking sleeve 1, a locking nut 2, and an anti-loosening fixing component 3.

[0038] The locking nut 2 is sleeved on the outside of the QBH locking sleeve 1 and rotatably connected to the QBH locking sleeve 1. The locking nut 2 is used to lock the QBH connector. The QBH locking sleeve 1 has an annular area 1-1, which is axially located on one side of the end of the locking nut 2. The width of the annular area 1-1 changes according to the rotation of the locking nut 2. When the locking nut 2 is tightened, the width of the annular area 1-1 increases, and when the locking nut 2 is loosened, the width of the annular area 1-1 decreases.

[0039] The anti-loosening fixing component 3 includes an anti-loosening fixing body 1 3-1 and an anti-loosening fixing body 2 3-2. One end of the anti-loosening fixing body 1 3-1 and the other end are fixedly connected by screws, forming a "clamp-like structure" that fits onto the outside of the locking nut 2. Both the anti-loosening fixing body 1 3-1 and the anti-loosening fixing body 2 have a section with an arc surface that matches the locking nut 2. This allows for easy fitting onto the locking nut, and the screw connection method allows for fine-tuning of the installation position according to different sized locking nuts, improving adaptability. It adopts a split mechanical structure, has a mature manufacturing process, and is suitable for mass production.

[0040] Furthermore, the arc surfaces of the anti-loosening fixing body 1 (3-1) and anti-loosening fixing body 2 (3-2) are also provided with arc-shaped limiting ribs. These ribs can be engaged within the annular region 1-1 to prevent the locking nut 2 from loosening. The arc surface design of the anti-loosening fixing component better matches the shape of the locking nut, increasing the contact area, reducing local stress concentration, and the good fit helps to enhance the overall constraint force of the anti-loosening component on the locking nut. By adjusting the arc radius, it can accommodate locking nuts of different diameters. When the locking nut loosens, the annular region narrows, and the limiting ribs automatically embed into it to form a physical barrier, further preventing the nut from loosening again; furthermore, the mechanical locking formed by the engagement of the limiting ribs with the annular region prevents loosening again through friction.

[0041] Furthermore, a gap is provided between the first anti-loosening fixing body 3-1 and the second anti-loosening fixing body 3-2 and the locking nut 2, and a dustproof sleeve 4 can be installed in the gap. The dustproof sleeve protects the QBH connector, greatly reducing the entry of dust, reducing the risk of metal dust entering the gap and causing pollution and wear, and improving service life.

[0042] Furthermore, both the first anti-loosening fixing body 3-1 and the second anti-loosening fixing body 3-2 are provided with a limiting groove 3-5 and a limiting pin 3-3 that is adapted to the limiting groove 3-5. The limiting pin 3-3 is fixed to the bottom of the welding torch handpiece 5-1. One section of the dustproof sleeve 4 is located in the gap between the limiting groove 3-5 and the limiting pin 3-3. The limiting pin 3-3 ensures that the anti-loosening component will not shift or slide after installation, and can also further strengthen the fixing of the dustproof sleeve.

[0043] Furthermore, the surface of the locking nut 2 is provided with friction texture. The friction texture design makes it less likely for the operator to slip when tightening / loosening by hand or with tools, improving the convenience and safety of operation, and further increasing the friction between the anti-loosening fixing component and the locking nut, resulting in a better fixing effect.

[0044] This embodiment solves the problem of loosening of the locking nut of the QBH connector due to fiber optic dragging, vibration or environmental factors during use; the anti-loosening fixing component is set independently, avoiding reliance on the friction of the locking nut itself to prevent loosening, thus improving the stability and safety of the overall system.

[0045] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. 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 QBH connector connection mechanism, characterized in that: It includes a QBH locking sleeve (1), a locking nut (2), and an anti-loosening fixing component (3). The locking nut (2) is sleeved on the outside of the QBH locking sleeve (1) and rotatably connected to the QBH locking sleeve (1). The locking nut (2) is used to lock the QBH connector. The anti-loosening fixing component (3) is sleeved on the outside of the locking nut (2) and is used to fix and prevent the locking nut (2) from loosening.

2. The QBH connector connection mechanism according to claim 1, characterized in that: The anti-loosening fixing component (3) includes an anti-loosening fixing body one (3-1) and an anti-loosening fixing body two (3-2), wherein one end of the anti-loosening fixing body one (3-1) and the other end are fixedly connected by screws.

3. The QBH connector connection mechanism according to claim 2, characterized in that: Both the first anti-loosening fixing body (3-1) and the second anti-loosening fixing body (3-2) have a section with an arc surface that is compatible with the locking nut (2).

4. The QBH connector connection mechanism according to claim 3, characterized in that: The QBH locking sleeve (1) and the welding torch housing (5) form an annular area (1-1), which is located axially on one side of the end of the locking nut (2). The width of the annular area (1-1) changes according to the rotation of the locking nut (2). When the locking nut (2) loosens, the width of the annular area (1-1) decreases. The arc surfaces of the first anti-loosening fixing body (3-1) and the second anti-loosening fixing body (3-2) are also provided with arc surface limiting ribs (3-4). The arc surface limiting ribs (3-4) can be inserted into the annular area (1-1) and prevent the locking nut (2) from loosening.

5. The QBH connector connection mechanism according to claim 4, characterized in that: A dustproof sleeve (4) is also provided between the first anti-loosening fixing body (3-1) and the second anti-loosening fixing body (3-2) and the locking nut (2).

6. The QBH connector connection mechanism according to claim 5, characterized in that: Both the first anti-loosening fixing body (3-1) and the second anti-loosening fixing body (3-2) are provided with a limiting groove (3-5) and a limiting pin (3-3) that is adapted to the limiting groove (3-5). One section of the dustproof sleeve (4) is located in the gap between the limiting groove (3-5) and the limiting pin (3-3).

7. A QBH connector connection mechanism according to claim 5, characterized in that: The surface of the locking nut (2) is provided with friction texture.

8. A welding torch, characterized in that: Includes a housing (5), the housing (5) including a handhold (5-1), the bottom of the handhold (5-1) being fitted with a QBH connector locking mechanism as described in any one of claims 1-7.

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