Rotating and locking structure of spray gun

Abstract

The utility model provides a rotating and locking structure of a spray gun, and belongs to the technical field of high-pressure cleaning machines. The problem that an existing spray gun is poor in use convenience is solved. The rotating and locking structure of the spray gun comprises a gun shell, a gun barrel and a gun barrel sleeve, one end of the gun barrel sleeve is arranged in the gun shell in a penetrating mode, the gun barrel is arranged in the gun barrel sleeve in a penetrating mode, the gun barrel sleeve can move in the axial direction relative to the gun barrel, the gun barrel sleeve can drive the gun barrel to rotate, and a locking groove is formed in the peripheral face of the end, close to the gun shell, of the gun barrel sleeve. A locking block is arranged on the inner wall of the gun shell, and the gun barrel sleeve can move front and back in the axial direction of the gun barrel so that the interior of the locking groove can be separated from the locking block or the locking block can be located in the locking groove. The structure is very convenient to lock and unlock, so that the use convenience of the spray gun is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field, specifically a rotating and locking structure for a spray gun. Background Technology

[0002] A high-pressure washer is a machine that uses a power unit to drive a high-pressure plunger pump to generate high-pressure water to wash the surface of an object. It can peel off and wash away dirt to achieve the purpose of cleaning the surface of an object. The spray gun is one of the important components of a high-pressure washer. The spray gun structure of existing high-pressure washer usually adopts a traditional mechanical structure. By holding the spray gun handle and turning the mechanical spray gun handle, the opening and closing of the valve inside the high-pressure washer spray gun is controlled by the angle of the spray gun handle, thereby changing the water output. For example, the China Patent Network discloses a telescopic spray gun [Authorization Announcement No.: CN109604083B], which includes a spray gun handle with a fixed inner tube, a retractable outer tube, and at least one locking mechanism. The retractable outer tube is located outside the fixed inner tube and is longitudinally slidable relative to the fixed inner tube. The locking structure is arranged to allow movement of the retractable outer tube relative to the fixed inner tube. The first locking mechanism includes a protrusion for engaging with a locking groove, wherein torsion of the retractable outer tube causes the protrusion to engage or disengage from the locking groove. The second locking mechanism includes a spring-loaded locking handle having a through hole for intercepting and releasing the retractable outer tube.

[0003] In actual use, the outer end of the inner tube is connected to the nozzle. During the spraying process, the outer tube and the inner tube are equipped with a circumferential positioning structure. That is, by rotating the outer tube, the inner tube is rotated and the angle of the water sprayed from the nozzle is adjusted to adapt to different cleaning needs. When the angle of the sprayed water reaches the actual requirement, the outer tube needs to be positioned to ensure that the water sprayed from the spray gun always maintains this spray angle. The existing locking structure of the outer tube is relatively complicated and inconvenient to operate. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a rotating and locking structure for a spray gun. The technical problem this invention aims to solve is: how to improve the ease of use of the spray gun.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A rotating and locking structure for a spray gun includes a gun housing, a gun barrel, and a gun barrel sleeve. The gun barrel sleeve has one end inserted into the gun housing, the gun barrel is inserted into the gun barrel sleeve, the gun barrel sleeve is axially movable relative to the gun barrel, the gun barrel sleeve can drive the gun barrel to rotate, a locking groove is formed on the outer circumferential surface of the gun barrel sleeve near the end of the gun housing, a locking block is provided on the inner wall of the gun housing, and the gun barrel sleeve can move back and forth along the axial direction of the gun barrel to disengage from the locking block in the locking groove or to position the locking block within the locking groove.

[0007] In use, the gun barrel can be rotated by rotating the gun barrel sleeve, thereby adjusting the spray angle. Once the desired spray angle is achieved, the gun barrel sleeve is moved along the shaft axis towards the gun housing. The locking groove gradually approaches the locking block until the locking block is fully within the limiting groove. When the locking block is fully within the limiting groove, the gun barrel sleeve is locked, preventing further rotation and locking the gun barrel. The spray gun maintains its spray angle in this state without being affected. To unlock, the gun barrel sleeve is moved away from the gun housing, disengaging the locking block from the locking groove, thus unlocking the gun barrel sleeve. This design features a simple locking structure for the gun barrel sleeve. The sleeve reciprocates along the shaft axis to achieve both locking and unlocking, allowing for both locking and unlocking of the gun barrel rotation. Both locking and unlocking operations are very convenient, improving the ease of use of the spray gun.

[0008] In the aforementioned rotating and locking structure of a spray gun, an arrow mark (33) is provided on the outer circumference of the gun barrel sleeve corresponding to the locking groove. The arrow mark is located outside the gun housing. The arrow mark is used to mark the lockable positions for user convenience.

[0009] In the aforementioned rotating and locking structure of a spray gun, several circumferentially spaced grooves are provided on the outer circumferential surface of one end of the gun barrel sleeve. A spring and a ball bearing partially embedded in the grooves are installed inside the gun housing. The ball bearing is constantly pressed against the gun barrel sleeve under the action of the spring. During use, rotating the gun barrel sleeve causes the gun barrel to rotate, and the ball bearing moves from one groove to another, thereby adjusting the spray angle. A clicking sound is produced when the ball bearing moves into the groove, providing a clear tactile feedback of the gear position. Furthermore, once the ball bearing is embedded in the groove, it locks the gun barrel sleeve, preventing rotation without external force. This ensures the spray gun can continuously operate at a specific gear position. Additionally, the gun barrel sleeve locking structure, achieved through springs, ball bearings, and grooves, is simple in structure, easy to manufacture, and low in cost.

[0010] In the aforementioned rotating and locking structure of a spray gun, the gun housing has a mounting base with a spring groove. One end of the spring abuts against the bottom surface of the spring groove, and the other end abuts against a ball bearing. The upper end of the spring groove has a limiting opening to prevent the ball bearing from detaching from the spring groove upwards, and a portion of the ball bearing extends out of the limiting opening. The spring groove limits the spring, facilitating its installation. The ball bearing is also positioned within the spring groove. Under the action of the spring, the ball bearing abuts against the inner edge of the limiting opening. At this time, a portion of the ball bearing is located outside the spring groove and embedded in the stop groove. When the gun barrel sleeve rotates, the ball bearing gradually detaches from the stop groove and comes into contact with the outer circumference of the gun barrel sleeve. Simultaneously, the ball bearing is gradually squeezed into the spring groove. Therefore, the spring groove also guides the movement of the ball bearing, ensuring that the ball bearing can accurately embed into the next stop groove.

[0011] In the aforementioned rotating and locking structure of a spray gun, both the gear shift groove and the locking groove are rectangular grooves, and the inner walls of both the gear shift groove and the locking groove are inclined slopes. The inclined slopes facilitate the smooth movement of the ball bearings out of the gear shift groove or the locking groove, preventing jamming during gear shift adjustment or locking adjustment.

[0012] In the aforementioned rotation and locking structure of a spray gun, the outer wall of the gun barrel has a raised rib arranged along its axial direction, and the inner wall of the gun barrel sleeve is provided with a limiting plate. A notch is provided on the limiting plate, and the raised rib is located within the notch. This structure allows the gun barrel sleeve to drive the gun barrel to rotate, and also allows the gun barrel sleeve to slide along the axial direction of the gun barrel.

[0013] Compared with the prior art, the rotation and locking structure of the spray gun of this utility model has the following advantages: The locking structure of the gun barrel sleeve in this solution is simple in design. The gun barrel sleeve is unlocked and locked by reciprocating along the axial direction of the gun barrel. That is, the rotation of the gun barrel is locked or unlocked. The locking and unlocking operations are very convenient, thereby improving the convenience of using the spray gun. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the present invention with half of the gun casing removed.

[0016] Figure 3 This is one of the partial three-dimensional structural schematic diagrams of this utility model.

[0017] Figure 4 This is the second partial three-dimensional structural schematic diagram of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the gun barrel of this utility model.

[0019] Figure 6 This is a three-dimensional structural diagram of half of the gun barrel sleeve of this utility model.

[0020] In the diagram, 1. Gun casing; 100. Mounting base; 101. Spring groove; 102. Limit opening; 103. Locking block; 2. Gun barrel; 20. Rib; 3. Gun barrel sleeve; 30. Gear groove; 31. Locking groove; 32. Positioning groove; 33. Arrow mark; 34. Limiting plate; 35. Notch; 4. Valve body; 5. Spring; 6. Ball bearing; 7. Inclined surface. Detailed Implementation

[0021] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0022] like Figures 1-6 As shown, the rotating and locking structure of this spray gun includes a gun housing 1, a gun rod 2, a gun rod sleeve 3, and a valve body 4 disposed within the gun housing 1. One end of the gun rod 2 is connected to the valve body 4 and can rotate circumferentially relative to the valve body 4. One end of the gun rod sleeve 3 is rotatably connected to the gun housing 1, and the gun rod 2 passes through the gun rod sleeve 3. The gun rod sleeve 3 can drive the gun rod 2 to rotate. The outer wall of the gun rod 2 has a rib 20 arranged axially. The inner wall of the gun rod sleeve 3 is provided with a limiting plate 34, and a notch 35 is opened on the limiting plate 34. The rib 20 is located within the notch 35. Several stop grooves 30 are spaced circumferentially on the outer circumferential surface of one end of the gun rod sleeve 3. A spring 5 and a ball bearing 6 that can be partially embedded in the stop groove 30 are disposed inside the gun housing 1. The ball bearing 6 is always pressed against the gun rod sleeve 3 under the action of the spring 5. During use, rotating the gun barrel sleeve 3 causes the gun barrel 2 to rotate, and the ball bearing 6 moves from one of the gear slots 30 to another, thereby adjusting the spray angle. The ball bearing 6 makes a clicking sound when it moves into the gear slot 30, providing a clear gear shift feel. After the ball bearing 6 is embedded in the gear slot 30, it locks the gun barrel sleeve 3, preventing it from rotating without external force. This ensures that the spray gun can work continuously at a certain gear. In addition, the locking structure of the gun barrel sleeve 3, which uses the spring 5, the ball bearing 6, and the gear slot 30, makes the structure simple, easy to manufacture, and low in cost.

[0023] like Figure 2 , Figure 3 and Figure 4As shown, the gun casing 1 has a mounting base 100 inside, and a spring groove 101 is provided on the mounting base 100. One end of the spring 5 abuts against the bottom surface of the spring groove 101, and the other end abuts against the ball 6. The upper end of the spring groove 101 has a limiting opening 102 for limiting the ball 6 to disengage upward from the spring groove 101, and part of the ball 6 extends out of the limiting opening 102. The spring groove 101 limits the spring 5, facilitating its installation. The ball bearing 6 is also located within the spring groove 101. Under the action of the spring 5, the ball bearing 6 abuts against the inner edge of the limiting opening 102. At this time, part of the ball bearing 6 is located outside the spring groove 101 and embedded in the gear slot 30. When the gun barrel sleeve 3 rotates, the ball bearing 6 gradually disengages from the gear slot 30 and comes into contact with the outer circumferential surface of the gun barrel sleeve 3. At the same time, the ball bearing 6 is gradually squeezed into the spring groove 30. Therefore, the spring groove 30 also guides the movement of the ball bearing 6, ensuring that the ball bearing 6 can be accurately embedded into the next gear slot 30.

[0024] like Figures 2-6 As shown, a locking groove 31 is formed on the outer peripheral surface of one end of the gun barrel sleeve 3. The locking groove 31 is located near the stop groove 30. One end of the gun barrel sleeve 3 has a positioning groove 32. A locking block 103 is provided on the inner wall of the gun housing 1. The gun barrel sleeve 3 can move along the axial direction of the gun barrel 2, so that the ball 6 moves from the stop groove 30 into the positioning groove 32 and the locking block 103 is located in the inner locking groove 31. In this embodiment, there are two locking grooves 31, and the angle between the two locking grooves 31 is 180°. Arrow marks 33 are provided on the outer peripheral surface of the gun barrel sleeve 3 at the positions corresponding to the two locking grooves 31. Both arrow marks 33 are located on the outside of the gun housing 1. When the spray gun is in one of the spray positions, in order to keep the spray gun in the spray position for a long time, the gun barrel sleeve 3 can be moved along the axis of the gun barrel 2 while the gun barrel remains stationary. The ball bearing 6 moves from the position groove 30 to the locking groove 31 and the locking block 103 is located in the positioning groove 31. The cooperation structure between the locking block 103 and the positioning groove 32 locks the gun barrel sleeve 3. The structure of the ball bearing 6 embedded in the locking groove 31 prevents the gun barrel sleeve 3 from moving along the axis of the gun barrel 2 without external force, so that the gun barrel sleeve 3 is completely locked and cannot drive the gun barrel 2 to rotate. This structure uses the same set of spring 5 and ball bearing 6 to lock the rotation or axial movement of the gun barrel sleeve 3. The structure is simple and highly practical.

[0025] like Figure 3 As shown, both the gear position groove 30 and the locking groove 31 are rectangular grooves, and the inner walls of both the gear position groove 30 and the locking groove 31 are inclined slopes 7. In this structure, the ball 6 needs to move both circumferentially and laterally. The rectangular grooves and inclined slopes 7 facilitate the smooth movement of the ball 6 out of the gear position groove 30 or the locking groove 31, avoiding jamming during gear adjustment or locking adjustment.

[0026] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A rotating and locking structure for a spray gun, comprising a gun housing (1), a gun barrel (2), and a gun barrel sleeve (3), characterized in that, One end of the gun barrel sleeve (3) is inserted into the gun housing (1), and the gun barrel (2) is inserted into the gun barrel sleeve (3). The gun barrel sleeve (3) can move axially relative to the gun barrel (2). The gun barrel sleeve (3) can drive the gun barrel (2) to rotate. A locking groove (31) is provided on the outer circumferential surface of the gun barrel sleeve (3) near the end of the gun housing (1). A locking block (103) is provided on the inner wall of the gun housing (1). The gun barrel sleeve (3) can move back and forth along the axial direction of the gun barrel (2) so that the locking groove (31) is disengaged from the locking block (103) or the locking block (103) is located in the locking groove (31).

2. The rotation and locking structure of a spray gun according to claim 1, characterized in that, The outer periphery of the gun barrel sleeve (3) is provided with an arrow mark (33) corresponding to the locking groove (31), and the arrow mark (33) is located outside the gun casing (1).

3. The rotation and locking structure of a spray gun according to claim 1, characterized in that, The gun barrel sleeve (3) has several circumferentially spaced grooves (30) on its outer circumferential surface. The gun shell (1) is provided with a spring (5) and a ball (6) that can be partially embedded in the groove (30). The ball (6) is always pressed against the gun barrel sleeve (3) under the action of the spring (5).

4. The rotation and locking structure of a spray gun according to claim 3, characterized in that, The gun casing (1) has a mounting base (100) inside, and a spring groove (101) is provided on the mounting base (100). One end of the spring (5) abuts against the bottom surface of the spring groove (101) and the other end abuts against the ball (6). The upper end of the spring groove (101) has a limiting opening (102) for limiting the ball (6) to move upward away from the spring groove (101). Part of the ball (6) extends out of the limiting opening (102).

5. The rotation and locking structure of a spray gun according to claim 3, characterized in that, Both the gear slot (30) and the locking slot (31) are rectangular slots, and the inner walls of both the gear slot (30) and the locking slot (31) are inclined slopes (7).

6. The rotation and locking structure of a spray gun according to claim 1 or 3, characterized in that, The outer wall of the gun barrel (2) has a rib (20) arranged along its axial direction, and the inner wall of the gun barrel sleeve (3) is provided with a limiting plate (34), and a notch (35) is opened on the limiting plate (34), and the rib (20) is located in the notch (35).

Images