Filter barrel with self-locking structure

Abstract

According to the filter barrel with the self-locking structure, a filter barrel inner cover comprises an end face and a peripheral wall inserted into the inner wall of the filter barrel, a protruding clamping strip is arranged on the peripheral wall, a clamping groove matched with the protruding clamping strip is formed in the inner wall of the filter barrel, and an inner cover lock catch structure is arranged on the end face of the filter barrel inner cover. The inner cover lock catch structure is used for limiting the circumferential rotation degree of freedom of the filter barrel inner cover relative to the filter barrel; the filter barrel outer cover further comprises a filter barrel fixing frame, the filter barrel fixing frame is arranged in the direction, facing the filter barrel, of the filter barrel outer cover, an elastic buckle alignment self-locking structure is arranged on the outer circumferential wall of the filter barrel, and the elastic buckle alignment self-locking structure is inserted into the filter barrel fixing frame through an elastic buckle to limit the circumferential rotation freedom degree of the filter barrel and the filter barrel outer cover. The filter barrel with the self-locking structure comprises the inner cover lock catch structure and the elastic buckle alignment self-locking structure, so that tightening and locking between the filter barrel and the filter barrel inner cover and between the filter barrel and the filter barrel outer cover are achieved, sealing reliability is guaranteed, loosening in the using process is avoided, and the overall reliability is improved.

Description

[Technical field] The invention relates to the technical field of a filter barrel in a water purifier, and in particular to a self-locking structure in an assembly structure of the filter barrel. [Background technology] With the continuous improvement of living standards, the widespread popularization of household and commercial water treatment equipment, users' requirements for drinking water quality are increasing day by day. Many occasions are equipped with water purification equipment such as water purifiers, and the water purifier filter element is the core component of the water purifier. The filter element equipment is placed in the water purifier filter barrel, which is a device for holding the filter element. At present, the water purifier filter barrel is mainly a welded disposable structure and a detachable threaded sealing structure; with the increasing demand for environmental protection and convenience, the disposable filter barrel no longer meets the requirements of environmental protection and cost. The common problem of the detachable filter barrel is that after long-term use, the seal is easy to loosen, resulting in water leakage. Therefore, a new filter barrel sealing locking structure design is urgently needed to improve its reliability. [Summary of the invention] The present invention improves the existing filter barrel and filter element lock structure, ensuring the reliability of the connection lock while taking into account convenience. By designing two locking structures, the filter barrel and the inner cover of the filter barrel can be tightened and locked, and the outer cover of the filter barrel can be locked with the filter barrel. The structure is simple and reliable, and it is easy for users to operate.

[0004] The present invention relates to a filter barrel with a self-locking structure, comprising a filter barrel, a filter element, a filter barrel inner cover and a filter barrel outer cover, the filter element is loaded into the filter barrel, and the filter barrel inner cover and the filter barrel outer cover are sequentially buckled, characterized in that the filter barrel inner cover comprises an end face and a peripheral wall inserted into the inner wall of the filter barrel, a protruding clip is provided on the peripheral wall, and a clip groove adapted to the protruding clip is provided on the inner wall of the filter barrel, an inner cover locking structure is provided on the end face of the filter barrel inner cover, and the inner cover locking structure limits the circumferential rotational freedom of the filter barrel inner cover relative to the filter barrel; the filter barrel outer cover also includes a filter barrel fixing frame, the filter barrel fixing frame is arranged in the direction of the filter barrel outer cover toward the filter barrel, and a spring buckle alignment self-locking structure is provided on the outer circumferential wall of the filter barrel, and the spring buckle alignment self-locking structure is inserted into the filter barrel fixing frame by the spring buckle to limit the circumferential rotational freedom of the filter barrel and the filter barrel outer cover.

[0005] The inner cover locking structure comprises a sliding buckle and a buckle groove, wherein the sliding buckle is arranged on the end surface of the inner cover of the filter barrel, and the buckle groove is arranged on the peripheral wall of the filter barrel.

[0006] The sliding buckle comprises a sliding groove and a buckle strip sliding along the sliding groove, and an anti-slip push rod is arranged on the outer surface of the buckle strip.

[0007] The spring-clip self-locking structure includes a spring-clip, a spring and a self-locking structure shell. The spring-clip presses the spring and is assembled in the self-locking structure shell. The buckle rod of the spring-clip extends out of the self-locking structure shell toward the filter barrel fixing frame, and the filter barrel fixing frame is provided with a locking hole adapted for the spring-clip. When the filter element is rotated to a preset position, the spring-clip is opposed to the locking hole, and the buckle rod of the spring-clip passes through the locking hole under the elastic force of the spring.

[0008] The spring buckle includes a built-in main body, an outwardly extending buckle rod and an outward pushing portion suitable for manual pushing. The built-in main body is inserted into the self-locking structure shell to support the spring. The buckle rod is provided on the top of the main body, and the outward pushing portion of the main body is facing outside the filter barrel.

[0009] The filter barrel with a self-locking structure involved in the present invention includes an inner cover locking structure and a spring-locking self-locking structure to achieve the tightening and locking between the filter barrel and the inner cover of the filter barrel, and between the filter barrel and the outer cover of the filter barrel, thereby ensuring reliable sealing and avoiding loosening during use, thereby improving overall reliability.

Brief Description of the Drawings

[0012] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by terms such as “center”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are positional relationships, which are only for the convenience of describing the present invention and simplifying the description, 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.

[0013] Please refer to the attached Figure 1 -Attached Figure 2 , which shows the structure of a filter barrel with a self-locking structure. The filter barrel with a self-locking structure involved in the present invention comprises a filter barrel 10, a filter element 20, a filter barrel inner cover 30 and a filter barrel outer cover 40. The filter element 20 is installed in the filter barrel 10, and the filter barrel inner cover 30 and the filter barrel outer cover 40 are sequentially buckled. It is characterized in that the filter barrel inner cover 30 comprises an end face 31 and a peripheral wall 32 inserted into the inner wall of the filter barrel, and a protruding card strip 33 is provided on the peripheral wall 32, and a card groove 11 adapted to the protruding card strip 33 is provided on the inner wall of the filter barrel 10, and the filter barrel inner cover 30 is provided with a protruding card strip 33. An inner cover locking structure 50 is provided on the end surface 31, and the inner cover locking structure 50 limits the circumferential rotational freedom of the filter barrel inner cover 30 relative to the filter barrel 10; the filter barrel outer cover 40 also includes a filter barrel fixing frame 41, and the filter barrel fixing frame 41 is arranged in the direction of the filter barrel outer cover 40 toward the filter barrel 10, and a spring buckle alignment self-locking structure 60 is provided on the outer circumferential wall of the filter barrel, and the spring buckle alignment self-locking structure 60 is inserted into the filter barrel fixing frame 41 through the spring buckle to limit the circumferential rotational freedom of the filter barrel 10 and the filter barrel outer cover 40.

[0014] The inner cover locking structure 50 includes a sliding buckle 51 and a buckle groove 52 , wherein the sliding buckle 51 is arranged on the end surface 31 of the filter barrel inner cover 30 , and the buckle groove 52 is arranged on the peripheral wall of the filter barrel 10 .

[0015] The sliding buckle 51 includes a sliding groove 511 and a buckle strip 512 that slides along the sliding groove 511 , and an anti-slip push rod 513 is provided on the outer surface of the buckle strip 512 .

[0016] Please refer to the attached Figure 3 and attached Figure 4 The snap-on self-locking structure 60 includes a snap-on 61, a spring 62 and a self-locking structure housing 63. The snap-on 61 presses the spring 62 and is assembled in the self-locking structure housing 63. The snap-on rod of the snap-on 61 extends out of the self-locking structure housing 63 toward the filter barrel fixing frame 41. The filter barrel fixing frame 41 has a locking hole 42 adapted for the snap-on 61. When the filter element rotates to a preset position, the snap-on 61 faces the locking hole 42, and the snap-on rod of the snap-on passes through the locking hole 42 under the elastic force of the spring 62. The snap-on self-locking structure limits the circumferential rotational freedom of the filter barrel 10 and the filter barrel fixing frame 41.

[0017] The spring buckle 61 includes a built-in main body 611, an outwardly extending buckle rod 612 and an outward pushing portion 613 suitable for manual pushing. The built-in main body 611 is inserted into the self-locking structure shell 63 to support the spring 62. The buckle rod 612 is provided on the top of the main body 611, and the outward pushing portion 613 is located on the main body 611 facing outside the filter barrel.

[0018] Through the design of the spring buckle 61, the filter barrel assembly can be conveniently installed on the filter barrel fixing frame 41, so that the filter barrel assembly and the filter barrel outer cover 40 will not loosen due to long-term pressure use conditions, resulting in reduced sealing and water leakage.

[0019] When replacing the filter barrel assembly of the filter element, the push-out portion 613 of the snap-on self-locking structure 60 is pressed down to drive the snap-on 61 downward, and the filter barrel assembly is installed on the filter barrel fixing frame 41. When the filter barrel assembly is rotated to the preset accurate position, the snap-on rod 612 of the snap-on self-locking structure 60 is just opposite to the locking hole 42. Driven by the elastic force of the spring 62, the snap-on rod 612 of the snap-on 61 passes through the locking hole 42, so that the filter barrel assembly is fixed to the filter barrel fixing frame 41. Due to the assembly and fixation of the snap-on 61 and the locking hole 42 of the filter barrel fixing frame 41, the filter barrel assembly and the fixing frame are locked, and the filter barrel assembly and the filter barrel outer cover 40 will not loosen due to long-term pressure use conditions, resulting in reduced sealing and water leakage, and the operation is intuitive and convenient; The filter barrel with a self-locking structure involved in the present invention includes an inner cover locking structure and a spring-locking self-locking structure to achieve the tightening and locking between the filter barrel and the inner cover of the filter barrel, and between the filter barrel and the outer cover of the filter barrel, thereby ensuring reliable sealing and avoiding loosening during use, thereby improving overall reliability.

[0020] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention is disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments according to the technology of the present invention are within the scope of the technical solution of the present invention without departing from the content of the technical solution of the present invention.

Claims

1. A filter barrel with a self-locking structure, comprising a filter barrel, a filter element, a filter barrel inner cover and a filter barrel outer cover, the filter element is loaded into the filter barrel, and the filter barrel inner cover and the filter barrel outer cover are sequentially buckled, characterized in that: The filter barrel inner cover includes an end face and a peripheral wall inserted into the inner wall of the filter barrel, a raised clip is provided on the peripheral wall, and a clip groove adapted to the raised clip is provided on the inner wall of the filter barrel, an inner cover locking structure is provided on the end face of the filter barrel inner cover, and the inner cover locking structure limits the circumferential rotational freedom of the filter barrel inner cover relative to the filter barrel; the filter barrel outer cover also includes a filter barrel fixing frame, the filter barrel fixing frame is arranged in the direction of the filter barrel outer cover toward the filter barrel, and a spring buckle alignment self-locking structure is provided on the outer circumferential wall of the filter barrel, and the spring buckle alignment self-locking structure is inserted into the filter barrel fixing frame by the spring buckle to limit the circumferential rotational freedom of the filter barrel and the filter barrel outer cover.

2. The filter barrel with a self-locking structure according to claim 1 is characterized in that: The inner cover locking structure comprises a sliding buckle and a buckle groove, wherein the sliding buckle is arranged on the end surface of the inner cover of the filter barrel, and the buckle groove is arranged on the peripheral wall of the filter barrel.

3. The filter barrel with a self-locking structure according to claim 2 is characterized in that: The sliding buckle comprises a sliding groove and a buckle strip sliding along the sliding groove, and an anti-slip push rod is arranged on the outer surface of the buckle strip.

4. The filter barrel with a self-locking structure according to claim 1 is characterized in that: The spring-clip self-locking structure includes a spring-clip, a spring and a self-locking structure shell. The spring-clip presses the spring and is assembled in the self-locking structure shell. The buckle rod of the spring-clip extends out of the self-locking structure shell toward the filter barrel fixing frame, and the filter barrel fixing frame is provided with a locking hole adapted for the spring-clip. When the filter element is rotated to a preset position, the spring-clip is opposed to the locking hole, and the buckle rod of the spring-clip passes through the locking hole under the elastic force of the spring.

5. The filter barrel with a self-locking structure according to claim 4 is characterized in that: The spring buckle includes a built-in main body, an outwardly extending buckle rod and an outward pushing portion suitable for manual pushing. The built-in main body is inserted into the self-locking structure shell to support the spring. The buckle rod is provided on the top of the main body, and the outward pushing portion of the main body is facing outside the filter barrel.

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