Knob damping structure of foam sprinkling can

Abstract

The utility model provides a knob damping structure of a foam sprinkling can, and belongs to the technical field of foam sprinkling cans. The rotary knob solves the problems that an existing rotary knob lacks adjusting texture in the rotating and adjusting process and cannot be positioned after rotating in place. The knob damping structure of the foam sprinkling can comprises a valve body, a valve sleeve connected to the valve body and an adjusting knob arranged on the valve sleeve in a sleeving mode, the adjusting knob can rotate relative to the valve sleeve, a circle of wavy protruding ring is formed on the inner side wall of the adjusting knob in the circumferential direction, and an installation hole is formed in the outer side wall of the valve sleeve in the radial direction of the valve sleeve. Positioning beads and springs are arranged in the mounting holes, and the positioning beads abut against the protruding rings under the action of the springs. According to the structure, rotation of the adjusting knob has a certain damping feeling, then the adjusting texture of the adjusting knob is improved, after the adjusting knob rotates in place, the positioning bead is located between the two wave crests, the adjusting knob cannot rotate under the condition that no external force exists, and the stability of control over the spraying concentration is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of foam spray pots, in particular to a knob damping structure of a foam spray pot. Background Art

[0002] The high-pressure foam sprayer is used to connect to a high-pressure washer. Through the high-pressure water flow of the high-pressure washer and the siphon effect, the suction tube draws the cleaning agent from the liquid tank, mixes it with the high-pressure water flow, and then passes through a high-density metal filter to produce thick foam. The foam is then ejected into fan-shaped foam through a flat nozzle and is used for cleaning vehicles and daily cleaning.

[0003] Currently, the China Patent Network discloses a foam sprayer for a high-pressure cleaner [Application Number: 201810204434.1]. The foam sprayer comprises a liquid reservoir for holding foam cleaning liquid, a nozzle for spraying the foam cleaning liquid, and a nozzle holder. The liquid reservoir has an opening at the top, a soap filter is fixed to the bottom of the inner side of the liquid reservoir, and a straw is provided inside the liquid reservoir for absorbing the foam cleaning liquid. One end of the nozzle holder is the input end, and a high-pressure cleaner is provided on one side of the input end. The other end of the nozzle holder is the output end. The lower end of the nozzle holder is fixed to the opening of the liquid reservoir. An air inlet is provided on the side of the nozzle holder. The upper end of the nozzle holder has an air inlet column, a nut is fixed to the air inlet column, and the nut has an air inlet sealing bevel inside. During use, the air inlet can be opened or closed by rotating the nut, that is, the amount of gas in the air inlet channel on the nozzle holder can be adjusted, thereby adjusting the amount of gas in the negative pressure chamber, and thus controlling the concentration of the foam sprayed by the nozzle.

[0004] The above-mentioned foam sprayer has the following defects: the rotating nut has no damping feeling during the rotation adjustment process, and thus lacks adjustment texture, and the position of the rotating nut after rotation adjustment cannot be located, and the rotating nut is easy to rotate, thereby affecting the control of the concentration of the sprayed foam. Summary of the Invention

[0005] The purpose of this utility model is to address the above-mentioned problems in the existing technology and propose a knob damping structure for a foam sprayer. The technical problem to be solved by this utility model is: how to solve the problem that the knob lacks adjustment texture during the rotation adjustment process and cannot be positioned after being rotated into place.

[0006] The purpose of this utility model can be achieved through the following technical solutions:

[0007] A knob damping structure for a foam sprayer, comprising a valve body, a valve sleeve connected to the valve body, and an adjusting knob sleeved on the valve sleeve, wherein the adjusting knob is rotatable relative to the valve sleeve and is characterized in that a wavy raised ring is formed circumferentially on the inner side wall of the adjusting knob, and a mounting hole is provided on the outer side wall of the valve sleeve along its radial direction, wherein a positioning bead and a spring are provided in the mounting hole, and the positioning bead rests on the raised ring under the action of the spring.

[0008] Working principle: The wavy raised circle has several peaks and several troughs, and there is a trough between two adjacent peaks. When the positioning bead moves between the two peaks, the adjustment knob cannot be rotated without external force. When the adjustment knob is rotated, the matching structure of the positioning bead and the raised circle makes the rotation of the adjustment knob have a certain damping feeling, thereby improving the adjustment texture of the adjustment knob. When the adjustment knob is rotated into place, the positioning bead is located between the two peaks, and the adjustment knob cannot be rotated without external force, thereby positioning the adjustment knob at this position, thereby improving the stability of the injection concentration control.

[0009] In the aforementioned knob damping structure for a foam sprayer, a mounting tube is disposed within the mounting hole, and the positioning bead and spring are both disposed within the mounting tube. One end of the mounting tube is closed, so that the positioning bead is partially confined within the mounting tube. The other end of the mounting tube has a bottom surface, and one end of the spring abuts against the positioning bead, while the other end abuts against the bottom surface. In this structure, the positioning bead and spring are encapsulated within the mounting tube, meaning that the positioning bead, spring, and mounting tube form a single component. After the mounting tube is inserted into the mounting hole, the adjusting rotary sleeve is then mounted on the valve sleeve. The inner wall of the adjusting knob compresses the positioning bead, causing it to move inward, thereby improving the ease of assembly between the adjusting knob and the valve sleeve.

[0010] In the aforementioned knob damping structure for a foam sprayer, a circular lower concave cavity is defined at the lower end of the adjusting knob, the upper end of the valve sleeve is inserted into the lower concave cavity, and the raised ring is located on the inner circumference of the lower concave cavity. The provision of the lower concave cavity facilitates the placement of the raised ring and facilitates assembly of the adjusting knob and the valve sleeve.

[0011] In the aforementioned knob damping structure for a foam sprayer, a valve core is disposed within the valve housing, with the upper end of the valve core extending outside the valve housing. The upper end of the valve core has a rectangular cross-section, and a rectangular positioning hole is defined on the inner top surface of the lower concave cavity, into which the upper end of the valve core is inserted. Turning the adjustment knob drives the valve core to rotate, thereby adjusting the concentration of the sprayed foam.

[0012] In the above-mentioned knob damping structure of a foam spray bottle, the upper end surface of the adjusting knob has a downwardly concave upper cavity, and the middle part of the bottom surface of the upper cavity has a boss, which is connected to the upper end of the valve core by a screw. This structure realizes the fixed connection between the adjusting knob and the valve core.

[0013] In the above-mentioned knob damping structure of a foam spray bottle, a knob cover for covering the screw is embedded in the upper cavity. The knob cover covers the screw, thereby reducing the degree of oxidation of the screw and improving the aesthetics of the adjustment knob.

[0014] Compared with the prior art, the knob damping structure of the foam sprayer of the utility model has the following advantages: when the adjustment knob is rotated, the matching structure of the positioning bead and the raised ring makes the rotation of the adjustment knob have a certain damping feeling, thereby improving the adjustment texture of the adjustment knob. When the adjustment knob is rotated into place, the positioning bead is located between the two wave peaks, and the adjustment knob cannot be rotated without external force, thereby positioning the adjustment knob at this position, thereby improving the stability of the control of the spray concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0016] Figure 2 This is one of the cross-sectional structural diagrams of the present utility model.

[0017] Figure 3 This is the second schematic diagram of the cross-sectional structure of the present utility model.

[0018] Figure 4 It is a three-dimensional structural diagram of the adjusting knob of the utility model.

[0019] Figure 5 It is a partial three-dimensional structural schematic diagram of the utility model.

[0020] In the figure, 1. valve body; 2. valve sleeve; 20. mounting hole; 3. adjusting knob; 30. raised ring; 31. lower concave cavity; 32. positioning hole; 33. upper concave cavity; 34. boss; 4. positioning bead; 5. spring; 6. mounting cylinder; 60. bottom surface; 7. valve core; 8. screw; 9. knob cover. DETAILED DESCRIPTION

[0021] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0022] like Figures 1 to 5As shown, the knob damping structure of the foam sprayer includes a valve body 1, a valve sleeve 2 connected to the valve body 1 and an adjusting knob 3 sleeved on the valve sleeve 2. The adjusting knob 3 can rotate relative to the valve sleeve 2. A wavy raised ring 30 is formed on the inner side wall of the adjusting knob 3 along the circumferential direction. A mounting hole 20 is opened on the outer side wall of the valve sleeve 2 along its radial direction. A positioning bead 4 and a spring 5 are arranged in the mounting hole 20. The positioning bead 4 rests on the raised ring 30 under the action of the spring 5. The wavy raised ring 30 has several peaks and several troughs, and there is a trough between two adjacent peaks. When the positioning bead 4 moves between the two peaks, the adjustment knob 3 cannot be rotated without external force. When the adjustment knob 3 is rotated, the matching structure of the positioning bead 4 and the raised ring 30 makes the rotation of the adjustment knob 3 have a certain damping feeling, thereby improving the adjustment texture of the adjustment knob 3. When the adjustment knob 3 is rotated into place, the positioning bead 4 is located between the two peaks, and the adjustment knob 3 cannot be rotated without external force, thereby positioning the adjustment knob 3 at this position, thereby improving the stability of the injection concentration control.

[0023] like Figure 3 and Figure 5 As shown, a mounting tube 6 is provided in the mounting hole 20, and the positioning bead 4 and the spring 5 are both provided in the mounting tube 6. One end of the mounting tube 6 is closed so that part of the positioning bead 4 is confined in the mounting tube 6, that is, under the action of the spring 5, part of the positioning bead 4 is located outside the mounting tube 6, but it will not fall out of the mounting tube 6. When the mounting tube 6 is installed in the mounting hole 20, part of the positioning bead 4 is located outside the mounting hole 20; the other end of the mounting tube 6 has a bottom surface 60, and one end of the spring 5 rests on the positioning bead 4 and the other end rests on the bottom surface 60. In this structure, the positioning bead 4 and the spring 5 are encapsulated in the mounting tube 6, that is, the positioning bead 4, the spring 5 and the mounting tube 6 form a component. After the mounting tube 6 is inserted into the mounting hole 20, the adjusting knob 3 is then fitted on the valve sleeve 2. The inner wall of the adjusting knob 3 squeezes the positioning bead 4 to move it inward, thereby improving the convenience of assembling the adjusting knob 3 and the valve sleeve 2.

[0024] In this embodiment, a circular lower concave cavity 31 is defined at the lower end of the regulating knob 3 , the upper end of the valve sleeve 2 is inserted into the lower concave cavity 31 , and the raised ring 30 is located on the inner circumference of the lower concave cavity 31 .

[0025] like Figures 1 to 5As shown, a valve core 7 is disposed within the valve housing 2, with the upper end of the valve core 7 extending outside the valve housing 2. The cross-section of the upper end of the valve core 7 is rectangular, and a rectangular positioning hole 32 is formed on the inner top surface of the lower concave cavity 31. The upper end of the valve core 7 is inserted into the positioning hole 32. The upper end surface of the adjusting knob 3 has a downwardly recessed upper concave cavity 33. The middle portion of the inner bottom surface 60 of the upper concave cavity 33 has a boss 34. The boss 34 is connected to the upper end of the valve core 7 by a screw 8. A knob cover 9 is embedded in the upper concave cavity 33 to cover the screw 8.

[0026] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A knob damping structure for a foam spray bottle, comprising a valve body (1), a valve sleeve (2) connected to the valve body (1), and an adjusting knob (3) sleeved on the valve sleeve (2), wherein the adjusting knob (3) is rotatable relative to the valve sleeve (2), and is characterized in that: A wavy raised ring (30) is formed on the inner wall of the regulating knob (3) along the circumferential direction, and a mounting hole (20) is opened on the outer wall of the valve sleeve (2) along its radial direction. A positioning bead (4) and a spring (5) are arranged in the mounting hole (20), and the positioning bead (4) is pressed against the raised ring (30) under the action of the spring (5).

2. The knob damping structure of a foam spray bottle according to claim 1, characterized in that: A mounting tube (6) is provided in the mounting hole (20), the positioning bead (4) and the spring (5) are both provided in the mounting tube (6), one end of the mounting tube (6) is provided with a closed end so that a portion of the positioning bead (4) is restricted in the mounting tube (6), the other end of the mounting tube (6) has a bottom surface (60), one end of the spring (5) rests on the positioning bead (4), and the other end rests on the bottom surface (60).

3. The knob damping structure of a foam spray bottle according to claim 1, characterized in that: A circular lower concave cavity (31) is provided at the lower end of the regulating knob (3), the upper end of the valve sleeve (2) is inserted into the lower concave cavity (31), and the raised ring (30) is located on the inner circumference of the lower concave cavity (31).

4. The knob damping structure of a foam spray bottle according to claim 3, characterized in that: A valve core (7) is provided in the valve sleeve (2), the upper end of the valve core (7) extends out of the valve sleeve (2), the cross section of the upper end of the valve core (7) is rectangular, a rectangular positioning hole (32) is provided on the inner top surface of the lower concave cavity (31), and the upper end of the valve core (7) is inserted into the positioning hole (32).

5. The knob damping structure of a foam spray bottle according to claim 4, characterized in that: The upper end surface of the regulating knob (3) has an upper cavity (33) that is recessed downwards, and the middle portion of the inner bottom surface (60) of the upper cavity (33) has a boss (34), and the boss (34) is connected to the upper end portion of the valve core (7) via a screw (8).

6. The knob damping structure of a foam spray bottle according to claim 5, characterized in that: A knob cover (9) for covering the screw (8) is embedded in the upper concave cavity (33).

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