Table type oral irrigator core

Abstract

The utility model provides a table type oral irrigator core which comprises a lower shell and an upper shell, the lower shell and the upper shell are fixedly connected through screws, a cylinder is arranged between the lower shell and the upper shell, a water inlet end and a water outlet end are arranged on the cylinder, a water outlet connector is arranged at the water outlet end, a catching groove is formed in the water outlet connector, and the catching groove is connected with the cylinder. A buckling groove is formed in the water inlet end and matched with a protrusion preset on the side wall of the water outlet end, the water inlet end is provided with a valve body in a buckled mode, the valve body is provided with a water inlet channel and a backflow channel, the water inlet channel and the backflow channel are communicated with the cylinder body, a backflow valve rod is arranged in the backflow channel and made of stainless steel, and the water inlet channel and the backflow channel are communicated with the cylinder body. And a silica gel cap is coated at the front end. According to the invention, fixed connection is carried out by adopting screw and fastening modes and the like, no-damage disassembly can be carried out, maintenance and replacement are facilitated, and meanwhile, a silica gel cap is arranged on the reflux valve rod made of stainless steel, so that the reflux valve has the advantages of sealing and structural strength.

Description

Technical Field

[0001] The present invention relates to the technical field of dental irrigators, and particularly to a desktop dental irrigator movement. Background Art

[0002] The internal structure of a desktop dental irrigator is complex, such as a water inlet assembly, a cylinder block assembly, a gear link assembly, a return flow assembly, etc. The internal structures of the models currently on the market are complex, and there are mainly two ways to connect the internal components. One is to connect each component through pipelines, and the other is to connect each component through non-detachable dead buckles and welding, etc.

[0003] The first pipeline connection makes the internal structure cumbersome and occupies a large space, making it impossible to make the product smaller and more beautiful, increasing the cost accordingly. Moreover, the waterproof requirements between the pipeline and the components also increase, and the probability of later leakage failures increases.

[0004] The second way is to connect each component through dead buckles and welding. This method has a cumbersome assembly process and a slow production speed. In addition, although it can reduce the leakage failure rate and make the internal structure smaller, each component cannot be disassembled separately. Once there is a leakage or other problems, it cannot be repaired and can only be replaced as a whole, greatly increasing the maintenance cost.

[0005] In addition, the handle of the desktop dental irrigator is only connected to the water pipe, and a water valve is provided on the handle. When the water valve is closed, it can prevent the internal pressure of the cylinder from increasing and causing damage to the driving structure. Therefore, a return flow valve / check valve needs to be added to the cylinder block. The valve core of this return flow valve is usually made of silicone material, which often deforms after long-term use and has a high failure rate; and this part has a small size and the silicone material is easy to bend during assembly, and the abnormal assembly rate during production line assembly is also relatively high. If the valve core leaks pressure and water, the dental cleaning effect of the dental irrigator will be greatly reduced. Summary of the Invention

[0006] To solve the above problems, the present invention discloses a desktop dental irrigator movement, which includes a lower housing and an upper housing, and the lower housing and the upper housing are fixedly connected by screws. By removing the screws, the upper housing and the lower housing can be separated.

[0007] A cylinder block is arranged between the lower housing and the upper housing. The cylinder block is provided with a water inlet end and a water outlet end, and a water outlet joint is arranged on the water outlet end. A buckle groove is arranged inside the water outlet joint, and the buckle groove cooperates with a protrusion preset on the side wall of the water outlet end. A valve body is also buckled and arranged at the water inlet end. That is, the connection method of the valve body is the same as the connection method between the water outlet joint and the cylinder block. By adopting this connection method, each component can be disassembled and fixed without damage.

[0008] The valve body is provided with an inlet channel and a return channel, each of which is connected to the cylinder body. A return valve stem is installed within the return channel. The return valve stem is made of stainless steel and has a silicone cap on its front end. The front end of the return valve stem faces the cylinder body, and a spring is installed at the rear end of the return valve stem. When the pressure inside the cylinder body suddenly increases, the return valve stem moves away from the cylinder body, and the spring is compressed, opening the return channel and relieving the pressure in the cylinder body. The return valve stem is made of stainless steel, which ensures its structural strength, and the silicone cap ensures a tight seal during long-term use.

[0009] Preferably, a first one-way valve is provided in the water inlet channel and is open only toward the cylinder body, and a second one-way valve is provided inside the water outlet end and is open only toward the water outlet connector. That is, when the cylinder body is under negative pressure, the first one-way valve opens, allowing the cylinder body to draw in water; when the cylinder body is under positive pressure, the second one-way valve opens, allowing the cylinder body to discharge water.

[0010] Preferably, the side walls of the water outlet connector and the valve body are both provided with ridges, which mate with pre-set slots in the inner walls of the lower and upper shells. The ridges and slots mate to secure the components between the lower and upper shells, preventing the components from becoming disengaged or separated during use.

[0011] Preferably, a piston is slidably connected to the interior of the cylinder, and one end of the piston is movably connected to a crank. The crank pulls the piston to reciprocate to achieve the water pumping operation of the cylinder.

[0012] Preferably, the upper housing is equipped with a drive motor, the output end of which is fixedly connected to a gear, and a reduction gear is meshed with one side of the gear. The reduction gear is provided with a boss, and the boss slides into a pre-set gap on the crank. When the drive motor is started, the reduction gear rotates via the gear, and the reduction gear, crank, and piston form a slider-crank mechanism, achieving reciprocating motion of the piston.

[0013] Preferably, one end of the valve body is buckled with an adapter, and the other end of the adapter is buckled with a water inlet. The adapter is used to change the direction of the channel, and the water inlet is a flexible material such as silicone, which is a component connected to the water tank and plays a sealing role.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The return valve stem is made of stainless steel and has rigidity. After long-term operation of the oral irrigator, mechanical failures caused by deformation, bending, etc. will not occur. A silicone cap is provided at the front end of the return valve stem. After the water passage is closed, the silicone surface and the conical surface are in interference fit and are not easily leaky. This change makes the check valve formed have rigidity and also takes into account the waterproof seal, greatly reducing the failure rate. During assembly, bending caused by operation can also be avoided, reducing the abnormal assembly rate and improving the assembly efficiency.

[0016] 2. The movement mechanism realizes the connection of each component through screws and snap connections, which can not only ensure the sealing effect of the component connection, but also achieve damage-free disassembly. If there is damage, only the corresponding damaged component needs to be replaced, which is conducive to the reuse of undamaged components during the preliminary quality inspection process and low-cost maintenance in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an exploded view of the present invention;

[0018] Figure 2 is a partial structural cross-sectional view of the present invention;

[0019] Figure 3 is a three-dimensional schematic view of the water outlet joint of the present invention;

[0020] Figure 4 is a cross-sectional view of the water outlet joint of the present invention;

[0021] Figure 5 is a three-dimensional schematic view of the valve body of the present invention;

[0022] Figure 6 is a cross-sectional view of the valve body of the present invention;

[0023] Figure 7 is a cross-sectional view of the return valve stem of the present invention;

[0024] Figure 8 is an exploded view of the tabletop oral irrigator to which the present invention is applied.

[0025] LIST OF REFERENCE NUMERALS:

[0026] 1. Lower housing; 2. Cylinder block; 3. Piston; 4. Crank; 5. Reduction gear; 6. Driving motor; 7. Upper housing; 8. Water inlet; 9. Adapter; 10. Valve body; 11. Water outlet joint; 12. Return valve stem; 13. Buckle groove; 14. Return channel; 15. Silicone cap.

[0027] A. Movement mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The present invention will be further illustrated below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0029] As Figures 1 to 8 shown, the desktop dental irrigator movement includes a lower housing 1 and an upper housing 7. The lower housing 1 and the upper housing 7 are used to fixedly cover the components arranged inside, and their shapes are related to the internal components. At the same time, reinforcing ribs are provided at the weak parts of the lower housing 1 and the upper housing 7. At the same time, the movement is fixedly connected inside the desktop dental irrigator to facilitate the layout of the water supply pipeline. Therefore, grooves or fixed connection structures for the water supply pipeline are preset on the lower housing 1 and the upper housing 7. The lower housing 1 and the upper housing 7 are fixedly connected by screws, that is, by removing the screws, the lower housing 1 and the upper housing 7 can be separated.

[0030] A cylinder body 2 is arranged between the lower housing 1 and the upper housing 7. The cylinder body 2 is similar to a "T" - shaped structure. The cylinder body 2 is provided with a water inlet end and a water outlet end, and a water outlet joint 11 is arranged on the water outlet end. The other end of the water outlet joint 11 is fixedly connected to the water supply pipeline, and the other end of the water supply pipeline is the dental irrigator handle. A buckle groove 13 is arranged inside the water outlet joint 11, and the buckle groove 13 cooperates with the protrusion preset on the side wall of the water outlet end. The specific operation is that when the water outlet joint 11 and the water outlet end cooperate, its protrusion is inserted into the buckle groove 13 and reaches the position, then the water outlet joint 11 is rotated so that the rear end of the protrusion abuts against the inner wall of the buckle groove 13, that is, the buckle groove 13 is "L" - shaped to prevent the protrusion from withdrawing from the buckle groove 13. The water inlet end is also provided with a valve body 10 in a snap - fit manner. Through the above snap - fit connection method, the components can be disassembled without damage, which is conducive to maintenance and replacement.

[0031] The valve body 10 is provided with a water inlet channel and a return channel 14. The water inlet channel is the channel for entering the cylinder body 2, and the water inlet channel and the return channel 14 are respectively communicated with the cylinder body 2. A return valve rod 12 is arranged inside the return channel 14. The return valve rod 12 is made of stainless steel to ensure the structural strength of the return valve rod 12, and a silica gel cap 15 is covered at the front end to ensure the sealing performance of the return channel 14. The front end of the return valve rod 12 faces the cylinder body 2, and a spring is arranged at the tail end of the return valve rod 12. That is, the return valve rod 12 and the spring form a one - way valve structure. When the internal pressure of the cylinder body 2 exceeds the designed threshold value, the return valve rod 12 moves and the spring compresses, and the water in the cylinder body 2 is discharged from the return channel 14. For example, when the water supply to the dental irrigator handle is cut off, the internal pressure of the cylinder body 2 increases.

[0032] A first one-way valve is provided in the water inlet passage and conducts only towards the cylinder block 2, that is, when the inside of the cylinder block 2 is in negative pressure, the first one-way valve opens. A second one-way valve is provided inside the water outlet end and conducts only towards the water outlet joint 11. When the inside of the cylinder block 2 is in positive pressure, the second one-way valve opens. If the second one-way valve cannot open under positive pressure, at this time, the return valve rod 12 and the spring form a one-way valve and open to relieve pressure, avoiding damage to the driving structure.

[0033] Both the side wall of the water outlet joint 11 and the valve body 10 are provided with ridges, and the ridges are matched with the preset holes in the inner walls of the lower housing 1 and the upper housing 7. Since the components are connected by buckling, to prevent the components from becoming loose due to factors such as vibration, structures such as ridges and holes are provided to ensure that each component can be fixed and limited between the lower housing 1 and the upper housing 7.

[0034] A piston 3 is slidably connected inside the cylinder block 2, and one end of the piston 3 is movably connected to a crank 4. The crank 4 pushes and pulls the piston 3 to change the positive and negative pressure inside the cylinder block.

[0035] A driving motor 6 is assembled on the upper housing 7. The output end of the driving motor 6 is fixedly connected to a gear, and a reduction gear 5 is meshed on one side of the gear. When the driving motor 6 is started, the reduction gear 5 is rotated through the gear. A convex column is provided on the reduction gear 5, and the convex column is slidably fitted in the long hole preset on the crank 4. The reduction gear 5, the crank 4 and the piston 3 form a crank-slider mechanism, that is, the reciprocating movement of the gear is realized.

[0036] A connecting piece 9 is buckled at one end of the valve body 10. The connecting piece 9 is an L-shaped piece and is provided with side ears on both sides. Through screws, etc., its side ears are connected to the lower housing 1 and the upper housing 7. The other end of the connecting piece 9 is buckled with a water inlet 8. The water inlet 8 is made of flexible material and is connected to the bottom of the water tank. Silicone material can be selected to achieve the effect of leak-proof sealing.

[0037] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above embodiments, but also include technical solutions formed by any combination of the above technical features.

Claims

1. Desktop dental irrigator movement, characterized in that It includes a lower housing (1) and an upper housing (7), and the lower housing (1) and the upper housing (7) are fixedly connected by screws; A cylinder block (2) is arranged between the lower housing (1) and the upper housing (7). The cylinder block (2) is provided with a water inlet end and a water outlet end, and a water outlet joint (11) is arranged on the water outlet end. A buckle groove (13) is arranged inside the water outlet joint (11), and the buckle groove (13) cooperates with a protrusion preset on the side wall of the water outlet end. A valve body (10) is also buckled and arranged at the water inlet end; The valve body (10) is provided with a water inlet channel and a return channel (14), and the water inlet channel and the return channel (14) are respectively communicated with the cylinder block (2). A return valve rod (12) is arranged inside the return channel (14). The return valve rod (12) is made of stainless steel, and a silica gel cap (15) is covered at the front end. The front end of the return valve rod (12) faces the cylinder block (2), and a spring is arranged at the tail end of the return valve rod (12).

2. The desktop oral irrigator movement according to claim 1, wherein: A first one-way valve is arranged in the water inlet channel and is only communicated with the cylinder block (2), and a second one-way valve is arranged inside the water outlet end and is only communicated with the water outlet joint (11).

3. The tabletop dental irrigator movement according to claim 1, wherein: Ribs are arranged on the side walls of the water outlet joint (11) and the valve body (10), and the ribs cooperate with the hole grooves preset on the inner walls of the lower housing (1) and the upper housing (7).

4. The tabletop dental irrigator movement according to claim 1, wherein: A piston (3) is slidably connected inside the cylinder block (2), and one end of the piston (3) is movably connected with a crank (4).

5. The tabletop dental irrigator movement according to claim 4, wherein: A driving motor (6) is assembled and arranged on the upper housing (7). The output end of the driving motor (6) is fixedly connected with a gear, and a reduction gear (5) is meshed on one side of the gear. A convex column is arranged on the reduction gear (5), and the convex column is slidably fitted in a long hole preset on the crank (4).

6. The tabletop dental irrigator movement according to claim 1, wherein: A connector (9) is buckled at one end of the valve body (10), and a water inlet (8) is buckled at the other end of the connector (9).

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