Automatic water injection mechanism

Abstract

The automatic water injection mechanism comprises an upper water injection assembly and a lower water injection assembly, the lower water injection assembly comprises a lower sleeve and a lower control valve, the lower sleeve is connected with an adaptive water pipe in the lower portion, the lower control valve is installed in the lower sleeve, provided with a pressure-bearing elastic body and used for controlling a water passing opening in the inner diameter of the lower sleeve to be opened, and the water pipe and the lower sleeve are connected in a sealed mode through an anti-disengaging structure. The water pipe or / and the lower portion of the lower sleeve are / is made of flexible materials, the anti-disengaging structure comprises an annular groove and a convex rib ring, the annular groove is located in the peripheral wall of the lower portion of the lower sleeve, a distance is formed between the annular groove and the tail end of the lower sleeve, and the convex rib ring protrudes inwards from the inner cavity wall of the top of the connecting end of the water pipe. And the lower sleeve and the water pipe are tightly matched and butted to form a pipe in a limiting and anti-falling manner through the clamping and embedding matching between the convex rib ring and the annular groove. The lower sleeve can be connected to the water pipe in a limiting mode through the anti-falling structure, sealing is stable, and pulling resistance is achieved. A design space foundation is provided for the hollow inner cavity of the lower sleeve and the control valve, the structure is reasonable, and assembling is convenient.

Description

Technical Field

[0001] The utility model relates to an automatic water injection mechanism for an electric heating appliance. Background Art

[0002] Nowadays, electric heating appliances with automatic water injection have become a common household electrical appliance. The automatic water injection mechanism is now photographed in the central channel of the temperature control connector. Due to the space and position limitations of the electric heating appliance, the water pipe and the automatic water injection mechanism are not in a straight line. It is often used to set a bending connector between the water pipe and the automatic water injection mechanism, which has the advantages of high cost, easy leakage, poor sealing, and even water pressure relationship. Jetting affects the work of the electrical connection part, and this connection method is very easy to fall off and is not resistant to pulling. Moreover, if a control valve is provided inside the automatic water injection mechanism, the insertion of the connector may affect the matching structure of the internal automatic water injection mechanism and the control valve, causing design obstacles and assembly difficulties. Summary of the invention

[0003] The utility model provides an automatic water injection mechanism with low cost, good sealing and anti-falling.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: an automatic water injection mechanism, including an upper water injection component and a lower water injection component, the lower water injection component includes a lower sleeve connected to an adapter water pipe, a lower control valve installed in the lower sleeve with a pressure-bearing elastic body and controlling the opening of the inner diameter water outlet of the lower sleeve, the water pipe and the lower sleeve are sealed and connected by an anti-slip structure, the water pipe and / or the lower part of the lower sleeve are made of flexible material, the anti-slip structure includes an annular groove located on the outer peripheral wall of the lower sleeve and having a spacing with the tail end of the lower sleeve, and a convex rib ring protruding inward from the inner cavity wall at the top of the water pipe connecting end, when the lower part of the lower sleeve is inserted into the water pipe connecting end, the convex rib ring and the annular groove are engaged with each other to make the lower sleeve and the water pipe limit and prevent slipping in a tight pairing manner to form a tube.

[0005] As an improvement: a convex rib block is provided on the outer peripheral wall of the lower sleeve above the annular groove and immediately along the upper groove of the annular groove, and the maximum outer diameter of the convex rib block is much larger than the maximum inner diameter of the cavity in the water pipe.

[0006] As an improvement, a convex rib block is formed on the outer peripheral wall of the lower sleeve, which partially or completely protrudes upward obliquely from the upper groove of the annular groove.

[0007] As an improvement: the upper top surface of the rib ring is an inwardly downward inclined surface.

[0008] As an improvement: the lower bottom surface of the convex rib ring of the anti-slip structure and the lower peripheral wall of the annular groove are flat surfaces. When the lower sleeve of the anti-slip structure is limitedly plugged into the water pipe, the lower bottom surface of the convex rib ring presses against the lower peripheral wall of the annular groove to form surface contact.

[0009] As an improvement: the water pipe is a bent pipe, and the bent part is far away from the connecting end with the convex rib ring.

[0010] The automatic water injection mechanism of the utility model is connected between the lower part of the lower sleeve and the water pipe connection end through an anti-slip structure, and the lower sleeve can be connected to the water pipe by the anti-slip structure. The water pipe or / and the lower part of the lower sleeve made of flexible material are sealed stably and resist pulling after the limited sleeve connection. At the same time, the anti-slip structure is only arranged at the tail of the outer peripheral wall of the lower sleeve and the water pipe connection end, and there is no need to set up a bending connector separately, which does not affect the hollow inner cavity of the lower sleeve of the lower water injection assembly and the control valve in the hollow inner cavity, and provides a design space foundation for the hollow inner cavity of the lower sleeve and the control valve, with a reasonable structure and convenient assembly.

[0011] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of an embodiment of the automatic water injection mechanism of the utility model.

[0013] Figure 2 It is an exploded view of the automatic water injection mechanism.

[0014] Figure 3 yes Figure 1 Schematic diagram of the structure of the middle and lower water injection assembly.

[0015] Figure 4 yes Figure 3 sectional view of . DETAILED DESCRIPTION

[0016] In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, it should be understood that the terms "connected", "connected", "fixed" and the like used in the present utility model should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or integrated; it can be a mechanical connection or a welding connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0017] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, an embodiment of the automatic water injection mechanism of the utility model comprises an upper water injection component and a lower water injection component, wherein the lower water injection component comprises a lower sleeve 2 connected to an adaptable water pipe, a lower control valve 3 installed in the lower sleeve 2 with a pressure-bearing elastic body and controlling the opening of the inner diameter water outlet of the lower sleeve, the water pipe 1 and the lower sleeve are sealed and connected by an anti-slip structure, the water pipe and / or the lower part of the lower sleeve are made of flexible material, the anti-slip structure comprises an annular groove 21 located on the outer peripheral wall of the lower sleeve and having a spacing with the tail end of the lower sleeve, and a convex rib ring 11 protruding inwardly from the inner cavity wall at the top of the water pipe connecting end, when the lower part of the lower sleeve is inserted into the water pipe connecting end, the convex rib ring 11 and the annular groove 21 are engaged with each other to make the lower sleeve and the water pipe limit and prevent slipping in a tight pairing manner to form a pipe. The water pipe is a bent pipe, and the bend is far away from the connecting end with the rib ring 11, so that after the lower part of the lower sleeve is inserted into the water pipe, the tail end of the lower sleeve is far away from the bend, thereby ensuring the smoothness of the water flow channel.

[0018] In order to avoid the problem of over-sleeving during the sleeve connection process, a convex rib block 22 is provided on the outer peripheral wall of the lower sleeve 2, located above the annular groove and immediately adjacent to the upper groove edge of the annular groove. The maximum outer diameter of the convex rib block 22 is much larger than the maximum inner diameter of the hollow cavity in the water pipe. In addition, the convex rib block 22 is formed by partially or completely convexly protruding upward from the upper groove edge of the annular groove on the outer peripheral wall of the lower sleeve 2. The obliquely upward convex surface 221 of the lower bottom of the convex rib block 22 can not only block the pre-over-positioned water pipe connection end, but also play an automatic return guide role for the over-sleeved water pipe connection end, so that the convex rib ring can be accurately embedded in the annular groove.

[0019] In order to make the flexible water pipe and / or the lower sleeve easier to plug, the upper top surface of the rib ring 11 in this embodiment is an inward downward slope 111. The inner downward slope can guide the lower tail end of the lower sleeve pre-sleeved with the water inlet pipe to improve the tight fit.

[0020] When the lower part of the lower sleeve is inserted into the water pipe connecting end, the convex rib ring and the annular groove are snap-fitted together, and at the same time, the peripheral wall of the tail section 23 below the annular groove of the lower sleeve forms surface contact with the water pipe cavity wall below the convex rib ring 11, which is tightly sealed. The lower sleeve and the water pipe are tightly matched to form a tube for limiting and anti-detachment. At the same time, in order to further improve the sealing performance, the lower bottom surface of the convex rib ring 11 of the anti-detachment structure implemented in this embodiment and the lower peripheral wall of the annular groove are flat surfaces, and the thickness of the convex rib ring 11 is consistent with the groove width of the annular groove, so that when the lower sleeve and the water pipe are limited and plugged in, the lower bottom surface of the convex rib ring 11 is pressed against the lower peripheral wall of the annular groove to form a surface contact and a sealing surface.

[0021] Although the utility model has been disclosed as above in terms of specific embodiments, it is not intended to limit the utility model. Any technician in this field can make slight changes and modifications without departing from the spirit and scope of the utility model. Therefore, the scope of protection of the utility model should be determined by the scope of the attached claims.

Claims

1. An automatic water injection mechanism, comprising an upper water injection assembly and a lower water injection assembly, characterized in that: The lower water injection assembly comprises a lower sleeve (2) connected to an adaptable water pipe, and a lower control valve (3) installed in the lower sleeve (2) with a pressure-bearing elastic body and controlling the opening of the water outlet of the inner diameter of the lower sleeve. The invention is characterized in that: the water pipe (1) and the lower sleeve are sealed and connected by an anti-slip structure, the water pipe and / or the lower part of the lower sleeve are made of flexible material, the anti-slip structure comprises an annular groove (21) located on the outer peripheral wall of the lower part of the lower sleeve and having a spacing with the tail end of the lower sleeve, and a convex rib ring (11) protruding inward from the inner cavity wall at the top of the water pipe connection end. When the lower part of the lower sleeve is inserted into the water pipe connection end, the convex rib ring (11) and the annular groove (21) are engaged with each other to make the lower sleeve and the water pipe limit and slip-proof tight-matched to form a pipe.

2. The automatic water injection mechanism according to claim 1, characterized in that: A convex rib block (22) is provided on the outer peripheral wall of the lower sleeve (2) above the annular groove and immediately along the upper groove of the annular groove. The maximum outer diameter of the convex rib block (22) is much larger than the maximum inner diameter of the cavity in the water pipe.

3. The automatic water injection mechanism according to claim 2, characterized in that: A convex rib stopper (22) is formed on the outer peripheral wall of the lower sleeve (2) and partially or completely protrudes obliquely upward from the upper groove of the annular groove.

4. The automatic water injection mechanism according to claim 1, 2 or 3, characterized in that: The upper top surface of the rib ring (11) is an inwardly downward inclined surface.

5. The automatic water injection mechanism according to claim 1, 2 or 3, characterized in that: The lower bottom surface of the convex rib ring of the anti-slip structure and the lower peripheral wall of the annular groove are flat surfaces. When the lower sleeve of the anti-slip structure is limitedly plugged into the water pipe, the lower bottom surface of the convex rib ring (11) presses against the lower peripheral wall of the annular groove to form surface contact.

6. The automatic water injection mechanism according to claim 4, characterized in that: The lower bottom surface of the convex rib ring of the anti-slip structure and the lower peripheral wall of the annular groove are flat surfaces. When the lower sleeve of the anti-slip structure is limitedly plugged into the water pipe, the lower bottom surface of the convex rib ring (11) presses against the lower peripheral wall of the annular groove to form surface contact.

7. The automatic water injection mechanism according to claim 1, 2 or 3, characterized in that: The water pipe is a bent pipe, and the bent portion is far away from the connecting end with the rib ring (11).

8. The automatic water injection mechanism according to claim 4, characterized in that: The water pipe is a bent pipe, and the bent portion is far away from the connecting end with the rib ring (11).

9. The automatic water injection mechanism according to claim 5, characterized in that: The water pipe is a bent pipe, and the bent portion is far away from the connecting end with the rib ring (11).

10. The automatic water injection mechanism according to claim 6, characterized in that: The water pipe is a bent pipe, and the bent portion is far away from the connecting end with the rib ring (11).

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