CN201360932Y - Seal joint of water inlet of water tank - Google Patents

Abstract

The utility model relates to a sealing joint of a water inlet of a water tank, which is composed of a sleeve (1), an insert (2) and a sealing ring (3). The inner peripheral wall of the sleeve (1) has an annular retaining portion (11) , the socket (2) has a cavity (21) with an upward opening, and the sealing ring (3) is arranged between the annular stopper (11) and the upper end surface of the socket (2), and is characterized in that the sealing ring (3) It has an annular horizontal portion (31) that can rest on the annular retaining portion (11), and the inner side of the horizontal portion (31) has an annular inclined portion (32) that extends downward and slopes outward, When the socket (2) is inserted into the sleeve (1), the upper end surface of the socket (2) is in contact with the horizontal part (31), and the inclined part (32) is in contact with the cavity ( 21) There is a gap (X) between the inner walls. When the joint is in use, the annular connecting column will press the inclined portion outward, and the inclined portion will be firmly attached to the outer end surface of the annular connecting column, so the sealing effect between the entire sealing joint and the annular connecting column is good.

Description

Sealing joint for water tank inlet

technical field

The utility model relates to a sealing joint of a water inlet of a water tank.

Background technique

The water outlet of the existing water tank is connected to the water pipe through the sealing joint, which requires a good sealing effect between the sealing joint and the water outlet, especially in the coffee machine or other similar beverage extraction devices. There should be a good liquid sealing effect between the joints.

The sealing joint of the water tank on the existing coffee machine is mainly composed of a sleeve and a connector that can be inserted into the sleeve. The lower end surface of the sleeve has four elastic clips that extend downwards and are arranged at intervals. The shape of the connector matches the sleeve and can be inserted into the sleeve. It has an outwardly protruding annular rib, and when the connector is inserted into the sleeve, the annular rib engages with the lower end surface of the sleeve, and the annular rib is correspondingly provided with a gap for the elastic clip to pass through, The connector has a concave cavity with an opening upwards, and the lower end surface of the connector has two connecting columns extending downwards for the insertion of the water supply pipe. The connecting columns are provided with water inlet holes communicating with the cavity. For the liquid seal between the barrel and the connector, an O-ring is provided in the sleeve, and the O-ring is limited between the annular retaining surface and the upper end surface of the connector. When the sealing joint is in use, first place the O-ring in the sleeve and place it on the ring stop, then insert the connector into the sleeve, the upper end of the connector squeezes the O-ring, and the sleeve The elastic claws on the barrel are snapped onto the inner bracket of the coffee machine, and then the water tank is buckled upside down in the coffee machine, and the ring-shaped connecting column outside the outlet of the water tank is inserted into the sleeve and inserted into the concave cavity of the connector all the way. Make sure that the connecting column cannot block the water inlet hole. Under the weight of the water tank, the O-ring is squeezed between the connecting column, the annular retaining surface, the inner peripheral wall of the sleeve and the upper end surface of the connector. , forming a sealing effect.

There are the following defects in the sealing between the sleeve, the connector and the connecting column of the water tank: 1. Since the O-shaped sealing ring has less deformation surface when it is squeezed, the O-shaped sealing ring and the adjacent each The contact area of the end face is small, especially the contact area with the outer peripheral surface of the annular connecting column at the lower part of the water tank, so the sealing effect is poor; if the sealing effect needs to be improved, it is necessary to make the O-shaped sealing ring and the outer peripheral surface of the annular connecting column The increase of the contact area of the surface will increase the strength of inserting and pulling out the water tank, making it difficult to use. The main reason for this phenomenon is that there is no gap between the O-shaped sealing ring and the inner peripheral wall of the sleeve. After insertion, the O-ring does not give way, resulting in a strong insertion and extraction force. 2. Before being assembled on the connecting column of the water tank, since the O-shaped sealing ring is mainly arranged between the annular retaining surface and the upper end surface of the connector, the area of the annular retaining surface is small. At this time, the O-shaped sealing ring is subjected to After the connector is squeezed, the O-shaped sealing ring is easily squeezed out of the annular retaining surface, especially when the connecting column of the water tank needs to be pulled out of the water tank, due to the friction between the O-shaped sealing ring and the outer peripheral surface of the connecting column of the water tank, The O-shaped sealing ring is more likely to fall out, which is inconvenient to use and assemble.

Contents of the invention

The technical problem to be solved by the utility model is to provide a sealing joint for the inlet and outlet of the water tank with good sealing effect, and at the same time, the sealing joint can be easily inserted or pulled out of the water tank.

The second technical problem to be solved by the utility model is to provide a sealing joint of the water inlet of the water tank which can securely position the sealing ring.

The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a sealing joint of the water inlet of the water tank, which is composed of a sleeve, an insert and a sealing ring, and the upper part of the inner peripheral wall of the sleeve has an annular Stopper, the shape of the connector matches the sleeve and can be inserted into the sleeve. The connector has a cavity with an upward opening, and the sealing ring is arranged on the upper end surface of the annular stopper and the connector. Between, it is characterized in that: the sealing ring has an annular horizontal portion that can rest on the annular retaining portion, and the inner side of the horizontal portion has an annular inclined portion that extends downward and slopes outward. When the piece is inserted into the sleeve, the upper end surface of the socket is in contact with the horizontal part, and there is a gap between the inclined part and the inner wall of the cavity of the socket.

In order to solve the second technical problem of the present utility model, the outside of the above-mentioned horizontal part also has a vertical part extending downward. When the connector is inserted into the sleeve, the peripheral wall of the connector is located between the vertical part and the inclined part. Between the parts, and the outer peripheral surface of the connector is attached to the inner end surface of the vertical part, and the outer end surface of the vertical part is attached to the inner end surface of the sleeve. Since the peripheral wall of the connector is located between the vertical part and the inclined part, the sealing ring can be stably limited on the peripheral wall of the connector to prevent the sealing ring from coming out under the extrusion of the connector, while the vertical part and the inclined part The outer peripheral surface of the connector is bonded to further improve the sealing effect.

The lower end surface of the above-mentioned annular retaining portion has an annular rib. Due to the existence of the annular bead, after the horizontal part of the sealing ring is pressed upward by the connector, the horizontal part is deformed, and a groove matching the bead is formed, which greatly increases the contact area between the sealing ring and the annular retaining part , the sealing effect is further improved.

Compared with the prior art, the utility model has the advantages that: since the inner side of the horizontal portion of the sealing ring has an annular inclined portion that extends downward and slopes outward, and the gap between the inclined portion and the inner wall of the cavity of the socket is There is a gap, so that when the joint is sleeved on the annular connecting column outside the water outlet of the water tank, the annular connecting column will press the inclined part outward, and the inclined part itself has a tendency to incline, so the inclined part will be connected with the ring The outer end surface of the column is firmly attached, and at the same time, the contact area between the sealing ring and the annular connecting column on the water tank is increased, so the sealing effect of the sealing ring structure is good, so the sealing effect between the entire sealing joint and the annular connecting column is good; and Generally, the larger the gap, the smaller the force required for the water tank to insert or pull out the sealing joint.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the utility model embodiment;

Fig. 2 is the structural sectional view of the utility model embodiment;

Fig. 3 is the sectional view of the utility model embodiment;

Fig. 4 is a three-dimensional structural schematic diagram of an embodiment of the utility model in use;

Fig. 5 is a schematic diagram of the three-dimensional structure of the water tank in use according to the embodiment of the utility model;

Fig. 6 is a cross-sectional view of the structure of the embodiment of the present invention in use.

Detailed ways

The utility model is described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1 to 3, it is a preferred embodiment of the present utility model.

A sealing joint of a water inlet of a water tank is composed of a sleeve 1, a plug connector 2 and a sealing ring 3.

The cross-section of the sleeve 1 is roughly circular. The upper part of the inner peripheral wall of the sleeve 1 has an annular stopper 11 extending inwardly. The lower end surface of the annular stopper 11 has an annular rib 12. The end face has four elastic clips 13 extending downwards and arranged at intervals.

The shape of the connector 2 matches the sleeve 1 and can be inserted into the sleeve 1. There is a protruding annular rib 22 at the middle and lower part of the outer peripheral surface of the connector 2, and the connector 2 is inserted into the sleeve. 1 In the internal state, the annular rib 22 is matched with the outer end surface of the sleeve 1, and the annular rib 22 is correspondingly provided with a notch 23 through which the above-mentioned elastic clip 13 passes, and the upper part of the connector 2 has an opening upward On the lower end surface of the connector 2 there are two connecting columns 24 extending downwards to which the water supply pipe 4 is plugged. The connecting columns 24 are provided with a water inlet hole 25 communicating with the concave cavity 21 .

The sealing ring 3 is arranged between the annular retaining portion 11 and the upper end surface of the connector 2. The sealing ring 3 has an annular horizontal portion 31 which can rest on the annular retaining portion 11. The inner side of the horizontal portion 31 has a downward extending There is also a circular inclined portion 32 inclined outward, and a vertical portion 33 extending downwards on the outside of the horizontal portion 31. There is a gap between the vertical portion 33 and the inclined portion 32, and the socket 2 is inserted into the In the state of the sleeve 1, the upper end surface of the connector 2 is in contact with the horizontal part 31, and there is a gap X between the inclined part 32 and the inner wall of the cavity 21 of the connector 2. The smaller the value of the gap X, the larger the water tank needs to be. Only a large insertion force can be inserted. On the contrary, the larger the value of the gap X, the water tank can be inserted into the joint only with a smaller insertion force. The peripheral wall of the connector 2 is located between the vertical part 33 and the inclined part 32, and the connector The outer peripheral surface of 2 is attached to the inner end surface of the vertical portion 33, and the outer end surface of the vertical portion 33 is attached to the inner end surface of the sleeve 1.

As shown in Figures 4 to 6, when the sealing joint is in use, the sealing ring 3 is sleeved on the peripheral wall of the socket 2 first, and the peripheral wall of the socket 2 is located between the vertical part 33 and the inclined part 32, and the plug The outer peripheral surface of the connector 2 fits the inner end surface of the vertical part 33, and then inserts the connector 2 sleeved with the sealing ring 3 into the sleeve 1, and then snaps the elastic clip 13 on the sleeve 1 into the On the internal support of the coffee machine, the water tank 5 is buckled upside down in the coffee machine. The structure of the water tank 5 assembled in the coffee machine is a prior art, and will not be elaborated here. The ring-shaped connecting column outside the water outlet 51 of the water tank 5 52 is inserted into the sleeve 1 and enters the concave cavity 21 of the connector 2, the outer peripheral surface of the annular connecting column 52 will press the inclined part 32 outwards, and the inclined part 32 itself has a tendency to incline inward, so the inclined part 32 and The outer end surface of the annular connecting column 52 is firmly attached, and at the same time, under the weight of the water tank 5, the upper end surface of the connector 2 squeezes the horizontal part 31 of the sealing ring 3, and at the same time, the convex rib on the annular retaining part 11 12 Squeeze the horizontal part 31 to deform the horizontal part 31 , and insert the raised rib 12 into the horizontal part 31 .

Claims (3)

1. A sealing joint for the water inlet of a water tank, which consists of a sleeve (1), an insert (2) and a sealing ring (3). The upper part of the inner peripheral wall of the sleeve (1) has an annular ring extending inward. The stopper (11), the shape of the connector (2) matches the sleeve (1) and can be inserted into the sleeve (1), the connector (2) has a cavity (21) with an upward opening , the sealing ring (3) is arranged between the annular stopper (11) and the upper end surface of the socket (2), and it is characterized in that: the sealing ring (3) has the ability to rest on the annular stopper ( 11) An annular horizontal portion (31) on the top, the inner side of the horizontal portion (31) has an annular inclined portion (32) that extends downwards and slopes outward, and is inserted into the sleeve ( 1) In the inner state, the upper end surface of the connector (2) is in contact with the horizontal part (31), and there is a gap (X) between the inclined part (32) and the inner wall of the cavity (21) of the connector. 2. The sealing joint of the water inlet of the water tank according to claim 1, characterized in that: the outer side of the horizontal part (31) also has a vertical part (33) extending downwards, where the socket (2) is inserted into the sleeve In the inner state of the cylinder (1), the peripheral wall of the socket (2) is located between the vertical portion (33) and the inclined portion (32), and the outer peripheral surface of the socket (2) is in contact with the vertical portion (33) The inner end surface of the vertical portion (33) is attached to the inner end surface of the sleeve (1). 3. The sealing joint of the water inlet of the water tank according to claim 1, characterized in that: the lower end surface of the annular retaining portion (11) has an annular rib (12).

Images