Locking structure for filter element and filter element

Abstract

The utility model relates to the technical field of water purifier accessories, in particular to a locking structure for a filter element and the filter element. The locking structure for the filter element comprises a filter element seat, a first locking piece, a second locking piece, a first transmission piece, a second transmission piece and a handle, a limiting sliding groove is formed in the filter element seat; the first locking piece is located at one end of the limiting sliding groove and is in sliding connection with the filter element base, the second locking piece is located at the other end of the limiting sliding groove and is in sliding connection with the filter element base, and the second transmission piece is located in the middle of the limiting sliding groove and is rotationally connected with the filter element base; the second transmission piece is in transmission connection with the first locking piece and the second locking piece. The first transmission part is rotationally connected with the filter element seat; the handle is fixedly connected with the first transmission part. The filter element with the locking structure can be conveniently separated from the filter element mounting seat, so that the user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water purifier accessories, and more specifically, to a locking structure for a filter element and the filter element. Background Art

[0002] In order to improve the quality of domestic water, many families have water purifiers on hand. As an important component of a water purifier, the filter element has the function of filtering and purifying water. However, since the filter element needs to be replaced regularly, the simplicity and convenience of the filter element fixing method has become one of the important considerations for users when purchasing a water purifier. Existing filter element fixing methods mainly include threaded fixing, rotary clamping fixing, etc. Among them, threaded fixing requires the use of a matching wrench, which is laborious and time-consuming to change the element, and troublesome to store; while the rotary clamping method is more complicated to disassemble and assemble the filter element, and usually requires the help of professional installation masters for disassembly and assembly. It is not convenient for users to disassemble and assemble the filter element by themselves, and the daily maintenance cost of users is high, and the user experience is low.

[0003] In view of the above-mentioned shortcomings, the CN219462762U patent discloses a filter element locking structure with a gear transmission, which realizes the unlocking and locking of the filter element in the water purifier by the synchronous translation of the first locking member and the second locking member relative to the first opening in the filter element seat; the user manually operates the driving member, so that a linkage effect is generated between the first transmission member, the second transmission member and the third transmission member, thereby driving the first locking member and the second locking member to synchronously translate and retract, and driving the first locking member and the second locking member to synchronously translate and extend out of the filter element seat through the first reset member and the second reset member, thereby realizing the unlocking and locking of the filter element; the setting of the gear transmission assembly can reduce the effort spent by the user in daily replacement of the filter element, and the manual operation is simpler, saving time and effort, being convenient and quick, and optimizing the user experience.

[0004] However, the above patent still has the following shortcomings: its driving part is a waist-shaped knob, which is small in size and lacks a labor-saving structure that is easy to hold, making it difficult to drag and separate the entire filter element from the filter element mounting seat by holding the driving part after unlocking. This is because multiple one-way valves for water inlet and outlet are installed at the end of the filter element opposite to the driving part. In order to ensure the sealing, a structure that is more closely matched with the filter element mounting seat needs to be set at the one-way valve end of the filter element; in addition, the filter element is driven by high pressure for a long time during operation, and its locking mechanism away from the one-way valve end is subjected to greater force, resulting in greater inertial pressure holding the filter element mounting seat; therefore, the waist-shaped driving part makes it inconvenient for users to replace the filter element by themselves. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a locking structure for a filter element, so that the filter element using this locking structure can be easily separated from the filter element mounting seat, thereby optimizing the user experience.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A locking structure for a filter element, comprising: a filter element seat, a first locking piece, a second locking piece, a first transmission piece for driving the first locking piece to retract or extend, a second transmission piece for driving the second locking piece to retract or extend synchronously with the first locking piece, and a handle for driving the first transmission piece to rotate; a limiting slide groove for accommodating the first locking piece, the second locking piece, and the second transmission piece is provided inside the filter element seat; the first locking piece is located at one end of the limiting slide groove and is slidably connected to the filter element seat, the second locking piece is located at the other end of the limiting slide groove and is slidably connected to the filter element seat, the second transmission piece is located in the middle of the limiting slide groove and is rotatably connected to the filter element seat; the second transmission piece is transmission-connected to the first locking piece and the second locking piece respectively; the first transmission piece is rotatably connected to the filter element seat; the handle is fixedly connected to the first transmission piece.

[0008] Optionally, the handle is arc-shaped or inverted U-shaped, one end of the handle is fixedly connected to one end of the first transmission member, and the other end of the handle is fixedly connected to the other end of the first transmission member.

[0009] Optionally, both ends of the handle are provided with assisting protrusions for movably pressing against the filter element mounting seat and making it easy for the filter element to be detached from the filter element mounting seat.

[0010] Optionally, the power-assisting protrusion is a rectangular block, and one of the end corners at the lower end of the rectangular block is set as a chamfered angle to facilitate the rotation of the handle.

[0011] Optionally, a protective shell is provided on the filter element seat, and the outer edge of the protective shell is concave to form a storage groove for storing the handle.

[0012] Optionally, the second transmission member is a gear with a pin hole in the middle, one side of the gear is meshed with the first locking member for transmission, and the other side of the gear is meshed with the second locking member for transmission, and the middle part of the gear is rotatably connected to the filter element seat through a pin shaft.

[0013] Optionally, the first transmission member is a transmission rod having a gear portion, and the gear portion is arranged in the middle of the transmission rod; the first locking member is provided with a first spur tooth portion adapted to the gear portion, and the first spur tooth portion is meshed with the gear portion for transmission; both ends of the transmission rod are rotatably mounted on the filter element seat through limit buckles, one end of the transmission rod is fixedly connected to one end of the handle, and the other end of the transmission rod is fixedly connected to the other end of the handle.

[0014] Optionally, the first transmission member and the handle are integrally formed.

[0015] Another object of the utility model is to provide a filter element, which comprises: the above-mentioned locking structure, and a filter element housing adapted to the locking structure; the filter element housing is sealed and connected to the filter element seat.

[0016] In summary, the utility model has the following beneficial effects: (1) By lifting the handle upward, the first transmission member is driven to rotate 90°, and the first transmission member then drives the first locking member to retract, and the first locking member synchronously drives the second locking member to retract through the second transmission member, thereby completing the loosening action of the filter element; that is, the filter element can be removed from the filter element mounting seat by lifting the handle upward, which has the advantages of convenience and labor saving. (2) The handle is arc-shaped or inverted U-shaped, which conforms to ergonomics and improves the comfort of the user holding the handle. (3) The assisting protrusion can act as a lever. After the handle is rotated upward 90°, the one-way valve end of the filter element and the filter element mounting seat can be switched from a tight fit state to a loose state, so that the user can smoothly remove the filter element from the filter element mounting seat. (4) A protective shell with a storage groove is installed on the filter element seat, which enhances the industrial aesthetics of the filter element design and prevents foreign matter from entering the limiting slide groove to hinder the mutual transmission of various components. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the locking structure used for the filter element in the prior art CN219462762U;

[0018] Figure 2 It is a structural schematic diagram of the locking structure used for the filter element in the utility model;

[0019] Figure 3 It is a top view of the locking structure for the filter element in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the filter element in the utility model;

[0021] Figure 5 It is a structural schematic diagram of the utility model in which the filter element is installed on the filter element mounting seat.

[0022] In the figure: 1. filter element seat; 11. limiting slide groove; 2. first locking member; 21. first straight tooth portion; 3. second locking member; 4. first transmission member; 41. gear portion; 5. second transmission member; 6. handle; 61. power assist protrusion; 611. chamfer; 7. protective shell; 71. storage slot; 8. filter element housing; 9. filter element mounting seat. DETAILED DESCRIPTION

[0023] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. Several embodiments of the utility model are given in the accompanying drawings. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein.

[0024] In the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. The terms "vertical", "horizontal", "left", "right", "above", "below" and similar expressions are for illustrative purposes only, and do not indicate or imply 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 invention.

[0025] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] The utility model provides a locking structure for a filter element, such as Figure 2-Figure 5 As shown, it includes: a filter element seat 1, a first locking member 2, a second locking member 3, a first transmission member 4 for driving the first locking member 2 to retract or extend, a second transmission member 5 for driving the second locking member 3 to retract or extend synchronously with the first locking member 2, and a handle 6 for driving the first transmission member 4 to rotate; a limiting slide groove 11 for accommodating the first locking member 2, the second locking member 3, and the second transmission member 5 is opened inside the filter element seat 1; the first locking member 2 is located at one end of the limiting slide groove 11 and is slidably connected to the filter element seat 1, the second locking member 3 is located at the other end of the limiting slide groove 11 and is slidably connected to the filter element seat 1, the second transmission member 5 is located in the middle of the limiting slide groove 11 and is rotatably connected to the filter element seat 1; the second transmission member 5 is transmission-connected to the first locking member 2 and the second locking member 3 respectively; the first transmission member 4 is rotatably connected to the filter element seat 1; the handle 6 is fixedly connected to the first transmission member 4.

[0027] The filter element seat 1 is generally circular, and a rectangular limiting slide groove 11 is opened on its upper surface. Both ends of the limiting slide groove 11 have an opening for the locking end of the first locking member 2 and the locking end of the second locking member 3 to pass through. The width of this opening is smaller than the middle width of the limiting slide groove 11, which serves to limit the sliding stroke of the first locking member 2 and the second locking member 3; wherein, the structure of the first locking member 2 is the same as that of the second locking member 3, and the two can be replaced with each other. The second transmission member 5 is located in the middle of the limiting slide groove 11 and is rotatably connected with the filter element seat 1 through a pin shaft; the transmission end of the first locking member 2 and the transmission end of the second locking member 3 are located on one side and the other side of the second transmission member 5. When the second transmission member 5 rotates clockwise, the first locking member 2 and the second locking member 3 are synchronously retracted and no longer engage the locking hole on the filter element mounting seat 9, thereby realizing the loosening action; the first transmission member 4 is a transmission rod with a gear part 41, and the limiting buckles at both ends of the transmission rod are installed on the filter element seat 1. There is a gap between the inner wall of the limiting buckle and the outer wall of the transmission rod, so that the transmission rod can rotate on the filter element seat 1; the gear part 41 is located in the middle of the transmission rod corresponding to the transmission end of the first locking member 2, and the circular motion of the first transmission member 4 is converted into the linear motion of the first locking member 2 through the transmission structure. The handle 6 is fixed to the two ends or the middle of the transmission rod, which can drive the transmission rod to rotate and has sufficient strength to lift the entire filter element through the transmission rod.

[0028] Furthermore, the handle 6 is arc-shaped or inverted U-shaped, one end of the handle 6 is fixedly connected to one end of the first transmission member 4 , and the other end of the handle 6 is fixedly connected to the other end of the first transmission member 4 .

[0029] like Figure 2 As shown, the shape of the handle 6 should be ergonomic and can improve the comfort of the user holding the handle, such as arc, C-shape, inverted U-shape, etc. The handle 6 can also be a "hanging ring" structure consisting of a straight rod and a ring, one end of the straight rod is integrally formed with the ring, and the other end is fixedly connected to the middle of the transmission rod.

[0030] Furthermore, both ends of the handle 6 are provided with assisting protrusions 61 for movably pressing against the filter element mounting seat 9 and making it easy for the filter element to be detached from the filter element mounting seat 9 .

[0031] like Figure 2 As shown, two boosting protrusions 61 are integrally formed with the handle 6 and are respectively located at the two ends of the arc-shaped handle 6; when the filter element and the filter element mounting seat 9 are in a locked state, the boosting protrusion 61 and the force groove on the filter element mounting seat 9 (such as Figure 4 When the filter element and the filter element mounting seat 9 are gradually switched from the locked state to the loosened state, the boosting protrusion 61 gradually presses against the stress surface of the stress groove, and the filter element is lifted by the lever action to a certain distance, which is determined by the distance between the bottom end surface of the boosting protrusion 61 and the axis of the transmission rod (i.e. Figure 2 The assisting protrusion 61 is provided so that the user can switch the one-way valve end of the filter element and the filter element mounting seat 9 from a tight fit state to a loose state after rotating the handle 6 by 90°, thereby allowing the user to smoothly remove the filter element from the filter element mounting seat 3. If the assisting protrusion 61 is not provided, it takes a lot of force to drag the filter element out of the filter element mounting seat 3; at the moment of dragging, it is easy to cause hand injuries due to excessive force.

[0032] Furthermore, the power-assisting protrusion 61 is a rectangular block, and one of the end corners at the lower end of the rectangular block is set as a chamfered corner 611 for facilitating the rotation of the handle 6.

[0033] like Figure 2 As shown, the chamfer 611 enables the assisting protrusion 61 to gradually press against the force surface of the force groove on the filter element mounting seat 9, and the pressing force increases relatively smoothly, so that the user can obtain a comfortable damping feeling and experience when turning the handle 6.

[0034] Furthermore, a protective shell 7 is provided on the filter element seat 1 , and the outer edge of the protective shell 7 is concave to form a receiving groove 71 for receiving the handle 6 .

[0035] like Figure 4-5 As shown, the protective shell 7 is installed on the filter element seat 1 by welding, gluing, snapping, etc., which enhances the industrial aesthetics of the filter element design and prevents foreign matter from entering the limiting slide groove 11 to hinder the mutual transmission of various components. When in the locked state, the handle 6 is stored in the storage groove 71 and does not protrude from the top surface of the protective shell 7.

[0036] like Figure 2-3 As shown, the second transmission member 5 is a gear with a pin hole in the middle, one side of the gear is meshed with the first locking member 2 for transmission, and the other side of the gear is meshed with the second locking member 3 for transmission, and the middle part of the gear is rotatably connected to the filter element seat 1 through a pin shaft.

[0037] In addition, the second transmission member 5 can also be an S-shaped rod with a certain elastic deformation ability. The middle part of this S-shaped rod is rotatably connected to the filter element seat 1 through a pin shaft, one end of which is hinged to the transmission end of the first locking member 2 through a pin shaft, and the other end of which is hinged to the transmission end of the second locking member 3 through a pin shaft.

[0038] like Figure 2-3 As shown; the top of the first locking member 2 is provided with a first spur tooth portion 21 adapted to the gear portion 41, and the first spur tooth portion 21 is meshed with the gear portion 41 for transmission; the side wall of the first locking member 2 is provided with a second spur tooth portion, and the second spur tooth portion is meshed with the first transmission member 5 (gear) for transmission.

[0039] Furthermore, in order to improve the connection strength between the first transmission member 4 and the handle 6 and reduce the number of parts to reduce the difficulty of assembly, the first transmission member 4 and the handle 6 are manufactured using an integral molding process.

[0040] The utility model also provides a filter element, which includes: the above-mentioned locking structure, and a filter element housing 8 adapted to the above-mentioned locking structure; the top of the filter element housing 8 is sealed and connected with the bottom of the filter element seat 1 by a spin melting process. At least one filter material is installed inside the filter element housing 8, and a one-way valve for water inlet and a one-way valve for water outlet are installed at the lower end.

[0041] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A locking structure for a filter element, characterized in that: include: A filter element seat, a first locking member, a second locking member, a first transmission member for driving the first locking member to retract or extend, a second transmission member for driving the second locking member to retract or extend synchronously with the first locking member, and a handle for driving the first transmission member to rotate; a limiting slide groove for accommodating the first locking member, the second locking member, and the second transmission member is provided inside the filter element seat; the first locking member is located at one end of the limiting slide groove and is slidably connected to the filter element seat, the second locking member is located at the other end of the limiting slide groove and is slidably connected to the filter element seat, the second transmission member is located in the middle of the limiting slide groove and is rotatably connected to the filter element seat; the second transmission member is transmission-connected to the first locking member and the second locking member respectively; the first transmission member is rotatably connected to the filter element seat; the handle is fixedly connected to the first transmission member.

2. The locking structure according to claim 1, characterized in that: The handle is arc-shaped or inverted U-shaped, one end of the handle is fixedly connected to one end of the first transmission member, and the other end of the handle is fixedly connected to the other end of the first transmission member.

3. The locking structure according to claim 1, characterized in that: Both ends of the handle are provided with assisting protrusions for movably pressing against the filter element mounting seat and making the filter element easy to detach from the filter element mounting seat.

4. The locking structure according to claim 3, characterized in that: The power-assisting protrusion is a rectangular block, and one of the end corners at the lower end of the rectangular block is set as a chamfered angle for facilitating the rotation of the handle.

5. The locking structure according to claim 1, characterized in that: A protective shell is provided on the filter element seat, and the outer edge of the protective shell is concave to form a storage groove for storing the handle.

6. The locking structure according to claim 1, characterized in that: The second transmission member is a gear with a pin hole in the middle. One side of the gear is meshed with the first locking member for transmission, and the other side of the gear is meshed with the second locking member for transmission. The middle part of the gear is rotatably connected to the filter element seat through a pin shaft.

7. The locking structure according to claim 2, characterized in that: The first transmission member is a transmission rod with a gear portion, and the gear portion is arranged in the middle of the transmission rod; the first locking member is provided with a first spur tooth portion adapted to the gear portion, and the first spur tooth portion is meshed with the gear portion for transmission; both ends of the transmission rod are rotatably mounted on the filter element seat through limit buckles, one end of the transmission rod is fixedly connected to one end of the handle, and the other end of the transmission rod is fixedly connected to the other end of the handle.

8. The locking structure according to claim 1, characterized in that: The first transmission member and the handle are integrally formed.

9. A filter element, characterized in that: include: The locking structure according to any one of claims 1 to 8, and a filter element housing adapted to match the locking structure; The filter element housing is sealed and connected to the filter element seat.

Images