A detergent dispenser with low resistance when pulling out a drawer

Abstract

The present invention proposes a detergent dispenser with low resistance when a drawer is pulled out, comprising a dispenser shell, a detergent storage box, and a detergent dispensing mechanism, wherein a check valve with a liquid outlet A is installed at one end of a plug-in channel in the detergent storage box, and the other end of the plug-in channel has an open end for inserting a liquid extraction interface, the open end of the plug-in channel has a first conical surface and a sealing ring sealing surface, and the outer periphery of the liquid extraction interface is installed with at least one sealing sealing ring that can tightly match with the sealing ring sealing surface; the axial distance between the outer ring of a sealing ring on the liquid extraction interface that is closest to the check valve and the abutting end of the liquid extraction interface is a, and when the check valve is in a state of closing the liquid outlet A, the axial distance between the contact surface of the check valve and the liquid extraction interface that abuts and matches and the open end of the sealing ring sealing surface is b, satisfying a≥b; when the detergent storage box is taken out, no vacuum resistance is generated, and the detergent storage box can be pulled out more labor-savingly.

Description

Technical Field

[0001] The invention relates to the technical field of washing machine dispensers, in particular to a detergent dispenser with low resistance when a drawer is pulled out. Background Art

[0002] Existing fully automatic washing machines generally have a detergent dispenser for temporarily storing detergent. The detergent is first temporarily stored in the detergent storage box and is put into the washing tub of the washing machine under the control of a specified program to wash clothes. The dispenser generally pre-stores the detergent in the detergent storage box. When washing is required, water is flushed into the detergent storage box and mixed with the pre-stored detergent and then put into the washing tub by the siphon effect to soak and wash the clothes. The existing dispenser adopts a drawer-type pull-out structure, such as Figure 1 , 2 , 3, where a0<b0, when detergent is added to the drawer (detergent storage box) and the drawer needs to be pulled out, the valve core of the check valve in the drawer is reset to a sealed state with the valve seat, and the liquid extraction interface has not been pulled out of the plug-in channel, and the plug-in channel between the liquid extraction interface and the check valve is in a closed state. When the drawer continues to be pulled open, the air in the closed plug-in channel is stretched, generating vacuum resistance, and a large pulling force is required to completely pull the drawer open. Summary of the invention

[0003] The purpose of the present invention is to solve the problem that the detergent box pulling force is large in the current automatic dispensing washing machine, and to provide a detergent dispenser with small resistance in pulling out the drawer, so that no vacuum resistance will be generated when the detergent storage box is taken out.

[0004] To achieve the above-mentioned purpose, the present invention proposes a detergent dispenser with low resistance to pulling out a drawer, comprising a dispenser shell, a detergent storage box arranged in the dispenser shell, and a detergent dispensing mechanism arranged at one end of the dispenser shell, the detergent storage box and the detergent dispensing mechanism are communicated through an internal channel of a liquid extraction interface, the liquid extraction interface has a liquid outlet B at one end close to the detergent storage box, the detergent storage box has a plug-in channel at one end, a check valve is installed at one end of the plug-in channel, the end of the check valve has a liquid outlet A, and the other end of the plug-in channel has a liquid extraction interface. The opening end of the plug-in channel is inserted into the opening, the opening end of the plug-in channel includes a first conical surface with a gradually decreasing inner diameter of the cross section and a sealing surface of a sealing ring, which are sequentially arranged along the insertion direction of the liquid extraction interface. The outer periphery of the liquid extraction interface is equipped with at least one sealing ring that can be tightly matched with the sealing surface of the sealing ring. The axial distance between the outer ring of a sealing ring on the liquid extraction interface closest to the check valve and the abutting end of the liquid extraction interface is a. When the check valve is in a state of closing the liquid outlet A, the axial distance between the contact surface of the check valve and the liquid extraction interface that abuts against each other and the opening end of the sealing surface of the sealing ring is b, satisfying a≥b;

[0005] When the detergent storage box is put in, the liquid extraction interface is inserted from the open end of the plug-in channel, and the check valve opens the liquid outlet A under the abutment of the liquid extraction interface, so that the detergent storage box is connected to the internal channel of the liquid extraction interface;

[0006] When taking out the detergent storage box, the liquid extraction interface is pulled out from the open end of the plug-in channel. After a sealing ring on the liquid extraction interface closest to the check valve is separated from the seal on the sealing surface of the sealing ring, the check valve is separated from the abutment of the liquid extraction interface to close the liquid outlet A. When the check valve is in the state of closing the liquid outlet A, the plug-in channel is in a state of being about to be connected to the atmosphere or in a state of being connected to the atmosphere.

[0007] Preferably, a push pin with one end passing through the liquid outlet B is provided inside the liquid extraction interface, and the check valve opens the liquid outlet A under the abutment of the push pin. The outside of the push pin is provided with a push pin sleeve, and the outer periphery of the push pin sleeve is equipped with multiple sealing rings that can tightly match the inner wall of the sealing surface of the sealing ring.

[0008] Preferably, the check valve comprises a valve seat, a valve core and a spring, wherein one end of the valve seat has a liquid outlet A, and a valve core is provided in the valve seat for sealing the liquid outlet A. The valve core is installed in the valve seat via a spring, and the spring exerts a force on the valve core toward the liquid outlet A side.

[0009] Preferably, the valve seat has an O-ring sealing surface at one end of the liquid outlet A, and the cross-sectional inner diameter of the O-ring sealing surface gradually increases along the insertion direction of the liquid extraction interface. The outer wall of the valve core is installed with a first O-ring that can tightly fit with the O-ring sealing surface, and the outer wall of the valve seat is provided with a second O-ring.

[0010] Preferably, a protrusion extends from one end of the valve core and can be extended from the liquid outlet A, and the outer diameter of the protrusion is larger than the outer diameter of the push pin inside the liquid extraction interface.

[0011] Preferably, the inner diameter of the cross section of the sealing surface of the sealing ring gradually decreases along the insertion direction of the liquid extraction interface, and the cross section radius of the small diameter end of the first conical surface is the same as that of the large diameter end of the sealing surface of the sealing ring.

[0012] The beneficial effects of the present invention are as follows: when the detergent storage box is taken out and the push pin is not in contact with the valve core of the check valve, the first O-ring and the O-ring sealing surface are in a sealed state, at which time the sealing ring and the sealing surface are in an unsealed state, and the plug-in channel between the sealing ring and the first O-ring is connected to the atmosphere; when the sealing ring and the push pin continue to move toward one side of the plug-in channel that is separated from the detergent storage box, no vacuum resistance is generated, and the detergent storage box can be taken out more effortlessly.

[0013] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of an existing detergent dispenser when the detergent storage box is taken out;

[0015] Figure 2 yes Figure 1 Schematic diagram of the II-direction cross section;

[0016] Figure 3 yes Figure 2 An enlarged schematic diagram of M;

[0017] Figure 4 is a schematic diagram of the structure when the detergent storage box is being taken out;

[0018] Figure 5 yes Figure 4 LL section diagram of ;

[0019] Figure 6 yes Figure 5 An enlarged schematic diagram of location N. DETAILED DESCRIPTION

[0020] See also Figures 4 to 6 The present invention discloses a detergent dispenser with low resistance to pulling out a drawer, comprising a dispenser housing 1, a detergent storage box 2 arranged in the dispenser housing 1, and a detergent dispensing mechanism 3 arranged at one end of the dispenser housing 1, wherein the detergent storage box 2 and the detergent dispensing mechanism 3 are communicated with each other through an internal channel of a liquid extraction interface 4, wherein the end of the liquid extraction interface 4 close to the detergent storage box 2 has a liquid outlet 40 B, and one end of the detergent storage box 2 has a plug-in channel 20, and a check valve 5 is installed at one end of the plug-in channel 20, and an end of the check valve 5 has a liquid outlet 50 A, and the other end of the plug-in channel 20 has an open end for inserting the liquid extraction interface 4, and ... The open end of the plug-in channel 20 includes a first conical surface 201 with a gradually decreasing inner diameter of the cross section and a sealing ring sealing surface 202, which are sequentially arranged along the insertion direction of the liquid extraction interface 4. At least one sealing ring 43 that can be tightly matched with the sealing ring sealing surface 202 is installed on the outer periphery of the liquid extraction interface 4. The axial distance between the outer ring of a sealing ring 43 on the liquid extraction interface 4 closest to the check valve 5 and the abutting end 400 of the liquid extraction interface 4 is a. When the check valve 5 is in a state of closing the A liquid outlet 50, the axial distance between the contact surface 522 of the check valve 5 abutting against the liquid extraction interface 4 and the open end of the sealing ring sealing surface 202 is b, satisfying a≥b;

[0021] When the detergent storage box 2 is put in, the liquid extraction interface 4 is inserted from the open end of the plug-in channel 20, and the check valve 5 opens the liquid outlet 50 under the abutment of the liquid extraction interface 4, so that the detergent storage box 2 is communicated with the internal channel of the liquid extraction interface 4;

[0022] When the detergent storage box 2 is taken out, the liquid extraction interface 4 is pulled out from the open end of the insertion channel 20. After a sealing ring 43 on the liquid extraction interface 4 closest to the check valve 5 is separated from the seal on the sealing surface 202 of the sealing ring, the check valve 5 is separated from the abutment of the liquid extraction interface 4 and closes the A liquid outlet 50. When the check valve 5 is in the state of closing the A liquid outlet 50, the insertion channel 20 is in a state of being about to be connected to the atmosphere or in a state of being connected to the atmosphere.

[0023] Furthermore, a push pin 41 with one end penetrating through the B liquid outlet 40 is provided inside the liquid extraction interface 4. Under the abutment of the push pin 41, the check valve 5 opens the A liquid outlet 50. The outside of the push pin 41 is provided with a push pin sleeve 42. The outer periphery of the push pin sleeve 42 is provided with a plurality of sealing rings 43 that can tightly fit with the inner wall of the sealing surface 202 of the sealing ring.

[0024] Further, the check valve 5 comprises a valve seat 51, a valve core 52 and a spring 53, one end of the valve seat 51 is provided with an A liquid outlet 50, a valve core 52 for blocking the A liquid outlet 50 is arranged in the valve seat 51, the valve core 52 is installed in the valve seat 51 through the spring 53, and the spring 53 exerts a force on the valve core 52 toward the A liquid outlet 50. Specifically, an O-ring sealing surface 511 is arranged at one end of the valve seat 51 having the A liquid outlet 50, and the inner diameter of the cross section of the O-ring sealing surface 511 gradually increases along the insertion direction of the liquid extraction interface 4, a first O-ring 521 which can be closely matched with the O-ring sealing surface 511 is installed on the outer wall of the valve core 52, and a second O-ring 512 is arranged on the outer wall of the valve seat 51. A protrusion 520 is extended from one end of the valve core 52 and can be extended from the A liquid outlet 50 . The outer diameter of the protrusion 520 is larger than the outer diameter of the push needle 41 inside the liquid extraction interface 4 .

[0025] Furthermore, the inner diameter of the cross section of the sealing ring sealing surface 202 gradually decreases along the insertion direction of the liquid extraction interface 4, which can ensure the reliability of the seal. The cross section radius of the small diameter end of the first conical surface 201 and the large diameter end of the sealing ring sealing surface 202 are the same.

[0026] The working process of the detergent dispenser with low resistance to pulling out a drawer of the present invention is as follows:

[0027] When the detergent storage box 2 is put in, the liquid extraction interface 4 is inserted into the open end of the plug-in channel 20, and the valve core 52 of the check valve 5 opens the liquid outlet 50 under the abutment of the push pin 41 of the liquid extraction interface 4, and the detergent storage box 2 is communicated with the internal channel of the liquid extraction interface 4, and the detergent dispensing mechanism 3 can extract detergent;

[0028] See also Figure 6When the detergent storage box 2 is taken out, the detergent storage box 2 moves to the right. Since a≥b, the sealing ring 43 can first be separated from the sealing cooperation with the sealing ring sealing surface 202, and then the valve core 52 moves to the left under the action of the spring 53 and resets to the first O-ring 521 and the O-ring sealing surface 511 in a sealed state, so that the plug-in channel 20 between the sealing ring 43 and the first O-ring 521 is connected to the atmosphere; when the sealing ring 43 and the push pin 41 continue to move to the side of the plug-in channel that is separated from the detergent storage box, no vacuum resistance will be generated, and the detergent storage box 2 can be taken out more effortlessly.

[0029] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A detergent dispenser with low resistance when pulling out a drawer, comprising a dispenser housing (1), a detergent storage box (2) arranged in the dispenser housing (1), and a detergent dispensing mechanism (3) arranged at one end of the dispenser housing (1), wherein the detergent storage box (2) and the detergent dispensing mechanism (3) are connected through an internal channel of a liquid extraction interface (4), and characterized in that: The end of the liquid extraction interface (4) close to the detergent storage box (2) has a liquid outlet B (40), and one end of the detergent storage box (2) has a plug-in channel (20). A check valve (5) is installed at one end of the plug-in channel (20), and the end of the check valve (5) has a liquid outlet A (50). The other end of the plug-in channel (20) has an open end for inserting the liquid extraction interface (4). The open end of the plug-in channel (20) includes a first conical surface (201) whose inner diameter of the cross section gradually decreases and is sequentially arranged along the insertion direction of the liquid extraction interface (4), and a sealing surface of a sealing ring. (202), at least one sealing ring (43) that can tightly match with the sealing surface (202) of the sealing ring is installed on the outer periphery of the liquid extraction interface (4), the axial distance between the outer ring of a sealing ring (43) on the liquid extraction interface (4) closest to the check valve (5) and the abutting end (400) of the liquid extraction interface (4) is a, and when the check valve (5) is in a state of closing the liquid outlet (50) A, the axial distance between the contact surface (522) of the check valve (5) and the liquid extraction interface (4) that abuts and matches and the open end of the sealing surface (202) of the sealing ring is b, and a≥b is satisfied; When the detergent storage box (2) is placed, the liquid extraction interface (4) is inserted from the open end of the plug-in channel (20), and the check valve (5) opens the liquid outlet (50) under the abutment of the liquid extraction interface (4), so that the detergent storage box (2) and the internal channel of the liquid extraction interface (4) are in communication; When the detergent storage box (2) is taken out, the liquid extraction interface (4) is pulled out from the open end of the plug-in channel (20). After a sealing ring (43) on the liquid extraction interface (4) closest to the check valve (5) is separated from the seal on the sealing surface (202) of the sealing ring, the check valve (5) is separated from the abutment of the liquid extraction interface (4) and the liquid outlet port A (50) is closed. When the check valve (5) is in a state of closing the liquid outlet port A (50), the plug-in channel (20) is in a state of being about to be connected to the atmosphere or in a state of being connected to the atmosphere.

2. A detergent dispenser with low resistance to pulling out a drawer as claimed in claim 1, characterized in that: The interior of the liquid extraction interface (4) is provided with a push pin (41) with one end penetrating through the liquid outlet B (40); the check valve (5) opens the liquid outlet A (50) under the abutment of the push pin (41); the exterior of the push pin (41) is provided with a push pin sleeve (42); and the outer periphery of the push pin sleeve (42) is provided with a plurality of sealing rings (43) which can closely match the inner wall of the sealing ring sealing surface (202).

3. A detergent dispenser with low resistance to pulling out a drawer as claimed in claim 1, characterized in that: The check valve (5) comprises a valve seat (51), a valve core (52) and a spring (53); one end of the valve seat (51) is provided with a liquid outlet A (50); a valve core (52) for blocking the liquid outlet A (50) is arranged in the valve seat (51); the valve core (52) is installed in the valve seat (51) via the spring (53); the spring (53) exerts a force on the valve core (52) towards the liquid outlet A (50).

4. A detergent dispenser with low resistance to pulling out a drawer as claimed in claim 3, characterized in that: The valve seat (51) has an O-ring sealing surface (511) at one end of the liquid outlet (50), and the inner diameter of the cross section of the O-ring sealing surface (511) gradually increases along the insertion direction of the liquid extraction interface (4). The outer wall of the valve core (52) is provided with a first O-ring (521) that can tightly match the O-ring sealing surface (511), and the outer wall of the valve seat (51) is provided with a second O-ring (512).

5. A detergent dispenser with low resistance to pulling out a drawer as claimed in claim 3, characterized in that: One end of the valve core (52) is extended with a protruding portion (520) that can be extended from the liquid outlet (50) A, and the outer diameter of the protruding portion (520) is greater than the outer diameter of the push pin (41) inside the liquid extraction interface (4).

6. A detergent dispenser with low resistance to pulling out a drawer as claimed in claim 1, characterized in that: The inner diameter of the cross section of the sealing ring sealing surface (202) gradually decreases along the insertion direction of the liquid extraction interface (4), and the cross section radius of the small diameter end of the first conical surface (201) and the large diameter end of the sealing ring sealing surface (202) are the same.

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