Sealing structure of valve core static plate and base

Abstract

The sealing structure comprises a rear cover and a static plate, the rear cover is provided with a rear cover water inlet and a rear cover water outlet, the static plate is located at the front end of the rear cover and abuts against the rear cover, the static plate is provided with a static plate water inlet and a static plate water outlet, the rear cover water inlet is correspondingly communicated with the static plate water inlet, and the rear cover water inlet is communicated with the static plate water outlet. The rear cover water outlet is correspondingly communicated with the static sheet water outlet, and the static sheet water inlet and the static sheet water outlet on one surface, facing the rear cover, of the static sheet are provided with downward concave positioning recesses; the rear cover water inlet and the rear cover water outlet are both provided with sealing rubber sleeves, one end of each sealing rubber sleeve abuts against the corresponding positioning recess, and the other end of each sealing rubber sleeve protrudes out of the face, back on to the static piece, of the rear cover. The utility model has the advantages of simple structure, good sealing performance and convenience in assembly.

Description

Technical Field

[0001] The utility model relates to the field of valve cores, in particular to a sealing structure of a valve core static sheet and a base. Background Art

[0002] At present, the opening and closing of the valve core of a faucet and the mixing of hot and cold water need to be achieved through the cooperation of the movable plate and the static plate. When assembling the valve core, the valve stem, the movable plate, the static plate and other components need to be fixed in the shell through the back cover. To ensure the sealing, a sealing ring is arranged between the back cover and the static plate, and the sealing is performed by the snapping force between the back cover and the shell. When the valve core is installed on the valve core mounting position of the faucet, a sealing ring is also required on the side of the back cover facing away from the static plate to be sealed against the bottom of the valve core mounting position. Therefore, both sides of the back cover are often provided with end face grooves around the water inlet and the water outlet to accommodate the sealing ring. However, the opening depth of the end face groove is often shallow, and the sealing ring is stuck in the end face groove by its own elasticity. Therefore, it is very easy to cause the sealing ring to be lost during disassembly or transportation. At the same time, the tiny sealing ring is difficult to realize automatic assembly during the production and assembly of the valve core. Utility Model Content

[0003] Based on the above problems, the utility model aims to provide a sealing structure of a valve core static plate and a base which has a simple structure, good sealing performance and is easy to assemble.

[0004] In view of the above problems, the following technical solutions are provided: a sealing structure of a valve core static plate and a base, comprising a back cover, which is arranged on the static plate, the back cover being provided with a back cover water inlet and a back cover water outlet, the static plate being located at the front end of the back cover and abutting against the back cover, the static plate being provided with a static plate water inlet and a static plate water outlet, the back cover water inlet and the static plate water inlet are correspondingly connected, the back cover water outlet and the static plate water outlet are correspondingly connected, and a concave positioning depression is provided at the position of the static plate water inlet and the static plate water outlet port on a side of the static plate facing the back cover; the back cover water inlet and the back cover water outlet are both provided with a sealing rubber sleeve, one end of the sealing rubber sleeve is abutting against the positioning depression, and the other end protrudes from a side of the back cover facing away from the static plate.

[0005] In the above structure, the sealing rubber sleeve is preferably made of silicone material, and is directly installed through the water inlet and the water outlet of the back cover, so that one end of each sealing rubber sleeve is sealed against the positioning recesses of the water inlet and the water outlet of the static plate, and the other end protrudes out of the back cover. When the valve core is installed on the valve core mounting position of the faucet, the extrusion force generated by the installation can be used to make the two ends of the sealing rubber sleeve respectively press against the bottom of the valve core mounting position and the positioning recess of the static plate to achieve sealing, thereby ensuring the sealing performance while simplifying the structure. Since the sealing rubber sleeve is entirely inserted into the water inlet and the water outlet of the back cover, it is extremely convenient to install, and the installation firmness is also greatly improved. The positioning recess can effectively improve the positioning effect of the sealing rubber sleeve, and can constrain the end face of the sealing rubber sleeve when subjected to axial force, thereby reducing radial expansion and loss of axial extrusion force, thereby assisting in improving the sealing performance.

[0006] The utility model is further configured that annular sealing lips are provided at the end surfaces of both ends of the sealing rubber sleeve, and the annular sealing lip of one end of the sealing rubber sleeve facing the static sheet is in contact with the positioning recess.

[0007] In the above structure, the annular sealing lip can improve the contact effect by deforming itself, thereby further improving the sealing performance.

[0008] The utility model is further configured that the annular sealing lips at each end surface of the sealing rubber sleeve are multiple and are concentrically offset to each other.

[0009] In the above structure, the annular sealing lip is multi-layered to further ensure the sealing effect.

[0010] The utility model is further configured such that the cross sections of the water inlet and the water outlet of the rear cover are both circular; and the cross section of the positioning recess is circular.

[0011] The above structure can be adapted to the cylindrical shape of the sealing rubber sleeve to ensure the restraining force on the sealing rubber sleeve in the radial direction.

[0012] The utility model is further configured that the water inlet of the rear cover and the water inlet of the static sheet are both in two groups.

[0013] In the above structure, they are used as cold water inlet and hot water inlet respectively.

[0014] The utility model is further configured that a side of the rear cover facing away from the static sheet is provided with an outwardly protruding positioning protrusion.

[0015] In the above structure, the positioning protrusion is used to adapt to the positioning pit at the bottom of the valve core installation position to control the circumferential position of the valve core.

[0016] The utility model is further configured that a buckle hook extending toward the static sheet is provided at the outer edge of the rear cover.

[0017] In the above structure, the hook is used to fit with the housing of the valve core to prevent it from falling off.

[0018] The utility model is further configured that the outer edge of the rear cover is provided with an anti-foolproof protrusion extending toward the static sheet, and the static sheet is provided with an anti-foolproof recess matched with the anti-foolproof protrusion.

[0019] In the above structure, the fool-proof protrusion and the fool-proof recess can ensure the circumferential position between the back cover and the static plate.

[0020] The utility model is further configured such that the cross section of the sealing rubber sleeve is cylindrical, and the outer wall of the sealing rubber sleeve is in interference fit with the water inlet of the rear cover and the inner wall of the water outlet of the rear cover through elastic extrusion contact.

[0021] In the above structure, radial constraints are provided to the outer wall of the sealing rubber sleeve, thereby effectively ensuring the supporting strength of the sealing rubber sleeve in the axial direction when it is subjected to axial extrusion force.

[0022] The beneficial effects of the present invention are as follows: the sealing rubber sleeve is preferably made of silicone material, and is directly installed through the water inlet and the water outlet of the back cover, so that one end of each sealing rubber sleeve is abutted and sealed against the positioning recesses of the water inlet and the water outlet of the static plate, while the other end protrudes out of the back cover. When the valve core is installed on the valve core mounting position of the faucet, the extrusion force generated by the installation can be utilized to make the two ends of the sealing rubber sleeve respectively abut and squeeze against the bottom of the valve core mounting position and the positioning recess of the static plate to achieve sealing, thereby ensuring the sealing performance while simplifying the structure. Since the sealing rubber sleeve is entirely inserted into the water inlet and the water outlet of the back cover, it is extremely convenient to install, and the installation firmness is also greatly improved. The positioning recess can effectively improve the positioning effect of the sealing rubber sleeve, and can constrain the end face of the sealing rubber sleeve when subjected to axial force, thereby reducing radial expansion and loss of axial extrusion force, thereby assisting in improving the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model from the first viewing angle.

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model from a second viewing angle.

[0025] Figure 3 For this utility model Figure 1 Schematic diagram of the full cutaway three-dimensional structure.

[0026] Figure 4 This is a schematic diagram of the exploded three-dimensional structure of the utility model from the first perspective.

[0027] Figure 5 This is a schematic diagram of the exploded three-dimensional structure of the utility model from a second viewing angle.

[0028] Figure 6 For this utility model Figure 4Schematic diagram of the full cutaway three-dimensional structure.

[0029] Meaning of the numbers in the figure: 10-rear cover; 11-rear cover water inlet; 12-rear cover water outlet; 13-positioning protrusion; 14-hook; 15-foolproofing protrusion; 20-static piece; 21-static piece water inlet; 22-static piece water outlet; 23-positioning depression; 24-foolproofing depression; 30-sealing rubber sleeve; 31-annular sealing lip. DETAILED DESCRIPTION

[0030] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0031] refer to Figures 1 to 6 ,like Figures 1 to 6 A sealing structure of a valve core static plate and a base is shown, comprising a back cover 10, which is arranged on the static plate 20, the back cover 10 is provided with a back cover water inlet 11 and a back cover water outlet 12, the static plate 20 is located at the front end of the back cover 10 and abuts against the back cover 10, the static plate 20 is provided with a static plate water inlet 21 and a static plate water outlet 22, the back cover water inlet 11 is correspondingly connected with the static plate water inlet 21, the back cover water outlet 12 is correspondingly connected with the static plate water outlet 22, and a concave positioning recess 23 is provided at the port position of the static plate water inlet 21 and the static plate water outlet 22 on the side of the static plate 20 facing the back cover 10; the back cover water inlet 11 and the back cover water outlet 12 are both provided with a sealing rubber sleeve 30, one end of the sealing rubber sleeve 30 abuts against the positioning recess 23, and the other end protrudes from the side of the back cover 10 facing the static plate 20.

[0032] In the above structure, the sealing rubber sleeve 30 is preferably made of silicone material and is directly installed through the water inlet 11 and the water outlet 12 of the back cover, so that one end of each sealing rubber sleeve 30 is sealed against the positioning recess 23 of the static plate water inlet 21 and the static plate water outlet 22, while the other end protrudes out of the back cover 10. When the valve core is installed on the valve core mounting position of the faucet, the extrusion force generated by the installation can be used to make the two ends of the sealing rubber sleeve 30 respectively press against the bottom of the valve core mounting position and the positioning recess 23 of the static plate 20 to achieve sealing, thereby ensuring the sealing performance while simplifying the structure. Since the sealing rubber sleeve 30 is completely inserted into the water inlet 11 and the water outlet 12 of the back cover, it is extremely convenient to install, and the installation firmness is also greatly improved. The positioning recess 23 can effectively improve the positioning effect of the sealing rubber sleeve 30, and can constrain the end face of the sealing rubber sleeve 30 when subjected to axial force, thereby reducing radial expansion and loss of axial extrusion force, thereby helping to improve the sealing performance.

[0033] In this embodiment, annular sealing lips 31 are provided at the end surfaces of both ends of the sealing rubber sleeve 30 , and the annular sealing lip 31 of the end of the sealing rubber sleeve 30 facing the static plate 20 is in contact with the positioning recess 23 .

[0034] In the above structure, the annular sealing lip 31 can improve the contact effect by deforming itself, thereby further improving the sealing performance.

[0035] In this embodiment, the annular sealing lips 31 at each end surface of the sealing rubber sleeve 30 are multiple and are concentrically offset from each other.

[0036] In the above structure, the annular sealing lip 31 is multi-layered to further ensure the sealing effect.

[0037] In this embodiment, the cross-sections of the rear cover water inlet 11 and the rear cover water outlet 12 are both circular; and the cross-section of the positioning recess 23 is circular.

[0038] The above structure can be adapted to the cylindrical shape of the sealing rubber sleeve 30 to ensure the restraining force on the sealing rubber sleeve 30 in the radial direction.

[0039] In this embodiment, the rear cover water inlet 11 and the static sheet water inlet 21 are both in two groups.

[0040] In the above structure, they are used as cold water inlet and hot water inlet respectively.

[0041] In this embodiment, a side of the rear cover 10 facing away from the static plate 20 is provided with an outwardly protruding positioning protrusion 13 .

[0042] In the above structure, the positioning protrusion 13 is used to adapt to the positioning pit at the bottom of the valve core installation position to control the circumferential position of the valve core.

[0043] In this embodiment, a buckle hook 14 extending toward the static piece 20 is provided at the outer edge of the rear cover 10 .

[0044] In the above structure, the hook 14 is used to fit with the housing of the valve core to prevent it from falling off.

[0045] In this embodiment, the outer edge of the back cover 10 is provided with an anti-fool-proof protrusion 15 extending toward the static piece 20 , and the static piece 20 is provided with an anti-fool-proof recess 24 adapted to the anti-fool-proof protrusion 15 .

[0046] In the above structure, the fool-proof protrusion 15 and the fool-proof recess 24 can ensure the circumferential position between the rear cover 10 and the static plate 20 .

[0047] In this embodiment, the cross section of the sealing rubber sleeve 30 is cylindrical, and the outer wall of the sealing rubber sleeve 30 is in interference fit with the inner wall of the rear cover water inlet 11 and the rear cover water outlet 12 through elastic extrusion contact.

[0048] In the above structure, radial constraints are provided to the outer wall of the sealing rubber sleeve 30, thereby effectively ensuring the supporting strength of the sealing rubber sleeve 30 in the axial direction when it is subjected to axial extrusion force.

[0049] The beneficial effects of the present invention are as follows: the sealing rubber sleeve 30 is preferably made of silicone material, and is directly installed through the water inlet 11 and the water outlet 12 of the rear cover, so that one end of each sealing rubber sleeve 30 is abutted and sealed against the positioning recess 23 of the static plate water inlet 21 and the static plate water outlet 22, while the other end protrudes out of the rear cover 10. When the valve core is installed on the valve core mounting position of the faucet, the extrusion force generated by the installation can be used to make the two ends of the sealing rubber sleeve 30 respectively abut and extrude against the bottom of the valve core mounting position and the positioning recess 23 of the static plate 20 to achieve sealing, thereby ensuring the sealing performance while simplifying the structure. Since the sealing rubber sleeve 30 is entirely inserted into the water inlet 11 and the water outlet 12 of the rear cover, it is extremely convenient to install, and the installation firmness is also greatly improved. The positioning recess 23 can effectively improve the positioning effect of the sealing rubber sleeve 30, and can constrain the end face of the sealing rubber sleeve 30 when subjected to axial force, thereby reducing radial expansion and loss of axial extrusion force, thereby assisting in improving the sealing performance.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. A sealing structure of a valve core static piece and a base, comprising a rear cover, which is arranged on the static piece, the rear cover is provided with a rear cover water inlet and a rear cover water outlet, the static piece is located at the front end of the rear cover and abuts against the rear cover, the static piece is provided with a static piece water inlet and a static piece water outlet, the rear cover water inlet is correspondingly connected to the static piece water inlet, the rear cover water outlet is correspondingly connected to the static piece water outlet, and the characteristics are: A concave positioning depression is provided at the static piece water inlet and static piece water outlet ports on the side of the static piece facing the rear cover; a sealing rubber sleeve is provided at the rear cover water inlet and rear cover water outlet, one end of the sealing rubber sleeve is against the positioning depression, and the other end protrudes from the side of the rear cover facing away from the static piece.

2. A sealing structure between a valve core static plate and a base according to claim 1, characterized in that: Annular sealing lips are arranged at the end surfaces of both ends of the sealing rubber sleeve, and the annular sealing lip of one end of the sealing rubber sleeve facing the static sheet is in contact with the positioning recess.

3. The sealing structure of the valve core static plate and the base according to claim 2, characterized in that: The annular sealing lips at each end surface of the sealing rubber sleeve are multiple and are concentrically offset from each other.

4. The sealing structure of the valve core static plate and the base according to claim 1, characterized in that: The cross-sections of the water inlet and outlet of the rear cover are both circular; The cross section of the positioning recess is circular.

5. A sealing structure between a valve core static plate and a base according to claim 1 or 2 or 3 or 4, characterized in that: The water inlet of the rear cover and the water inlet of the static sheet are both in two groups.

6. The sealing structure of the valve core static plate and the base according to claim 1, characterized in that: A side of the rear cover facing away from the static sheet is provided with an outwardly protruding positioning protrusion.

7. The sealing structure of the valve core static plate and the base according to claim 1, characterized in that: A buckle hook extending toward the static sheet is provided at the outer edge of the rear cover.

8. The sealing structure of the valve core static plate and the base according to claim 1, characterized in that: An anti-fool-proofing protrusion extending toward the static sheet is provided at the outer edge of the rear cover, and the static sheet is provided with an anti-fool-proofing recess matched with the anti-fool-proofing protrusion.

9. The sealing structure of the valve core static plate and the base according to claim 1, characterized in that: The cross section of the sealing rubber sleeve is cylindrical, and the outer wall of the sealing rubber sleeve is in interference fit with the water inlet of the rear cover and the inner wall of the water outlet of the rear cover through elastic extrusion contact.

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