Filter barrel with double-locking structure

Abstract

A filter barrel with a double-locking structure comprises a filter barrel body, a filter element, a filter barrel inner cover and a filter barrel outer cover, the filter element is arranged in the filter barrel body, the filter barrel inner cover and the filter barrel outer cover are sequentially buckled and covered, and the filter barrel is characterized in that a tightening structure formed by matching a protruding clamping strip and a clamping groove is arranged between the filter barrel inner cover and the filter barrel body, and an inner cover locking structure circumferentially locked on the filter barrel body is arranged on the filter barrel inner cover; and an outer cover locking structure is arranged between the filter barrel outer cover and the filter barrel. According to the filter barrel with the double locking structures, two locking structures are designed, locking between every two parts of the three parts is completed through two action positions, it is guaranteed that locking between the filter element and the filter barrel and locking between the filter barrel cover and the filter barrel are stable and reliable, the structure is simple and reliable, and user operation is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of filter barrel locking structure technical field in water purifier, especially to be equipped with multiple locking structures in filter barrel assembly structure to realize double self-locking scheme. BACKGROUND

[0002] With the continuous improvement of living standards, the widespread popularity of household and commercial water treatment equipment, users' requirements for drinking water quality are increasing. Many occasions will be configured to purify drinking machine and other water treatment equipment, and among them, the filter cartridge of water purifier is the core device of water purifier, and the filter cartridge equipment is placed in the filter barrel of water purifier. The filter barrel is a device for containing filter cartridges. At present, the filter barrel of water purifier is mainly welded disposable structure and detachable threaded sealing structure. With the increasing demand for environmental protection and convenience, disposable filter barrels no longer meet the needs of environmental protection and cost. The common problem of detachable filter barrels is that the seal is prone to loosen after long-term use, leading to water leakage. Therefore, there is an urgent need for a new filter barrel sealing locking structure design to improve its reliability.

[0003] At present, during the assembly process of filter cartridge and filter barrel structure, the filter cartridge is usually assembled into the filter barrel first, the inner cover of the filter barrel is buckled, and then the filter barrel assembly is installed on the outer cover of the filter barrel. This involves two buckling and assembly processes, and the two tightening parts also need to be locked to prevent loosening and cause the sealing performance to decrease and leak. SUMMARY

[0004] The utility model improves the design of the existing filter barrel and filter cartridge lock catch structure, ensuring the reliability of the connection lock catch while considering convenience. By designing a double locking structure, the locking between each two parts of three components is completed through two action positions, ensuring the stable and reliable locking between the filter cartridge and the filter barrel, as well as the filter barrel cover and the filter barrel. The structure is simple and reliable, and easy for users to operate.

[0005] The utility model relates to a kind of filter barrel of double locking structure, including filter barrel, filter cartridge, filter barrel inner cover and filter barrel outer cover, filter cartridge is loaded into filter barrel, and filter barrel inner cover and filter barrel outer cover are buckled in turn, characterized by, the tightening structure of the projection clamping strip and the clamping groove cooperation between the filter barrel inner cover and the filter barrel is equipped, and the inner cover locking structure that is locked in the filter barrel is equipped on the filter barrel inner cover;Filter barrel outer cover and filter barrel are equipped with outer cover locking structure.

[0006] The filter barrel inner cover includes an end face and a peripheral wall inserted into the inner wall of the filter barrel. The tightening structure includes a projection clamping strip provided on the peripheral wall of the filter barrel inner cover, and a clamping groove adapted to the projection clamping strip is provided on the inner wall of the filter barrel. The end face of the filter barrel inner cover is inserted into the inner wall of the filter barrel, and the projection clamping strip slides into the clamping groove of the inner wall of the filter barrel during rotation to tighten and assemble.

[0007] The inner cover locking structure is provided with a sliding buckle and a sliding clamping groove between the filter bucket inner cover end face and the filter bucket wall, the sliding buckle is arranged on the inner cover end face or the filter bucket wall, the sliding clamping groove capable of accommodating the sliding buckle is arranged on the other one, the sliding buckle is pushed and inserted into the sliding clamping groove to limit the circumferential rotation freedom between the two.

[0008] The outer cover locking structure comprises a spring buckle locking structure and a sliding buckle locking structure.

[0009] The spring buckle locking structure comprises a spring buckle, a spring and a self-locking structure shell, the spring buckle is assembled in the self-locking structure shell by pressing the spring, the buckle rod of the spring buckle is arranged outside the self-locking structure shell and faces the filter bucket outer cover, the filter cartridge fixing frame is arranged on the filter bucket outer cover, the locking hole position of the spring buckle is arranged on the filter cartridge fixing frame, when the filter cartridge assembly is rotated to the preset position, the spring buckle is opposite to the locking hole position, and the buckle rod of the spring buckle passes through the locking hole position under the spring elastic force.

[0010] The spring buckle comprises an inner body, an outward buckle rod and an outward pushing position suitable for being pushed by a hand, the inner body is clamped into the self-locking structure shell and presses the spring, the top of the inner body is provided with the buckle rod, and the outward pushing position is arranged on the direction away from the filter bucket.

[0011] The sliding buckle locking structure comprises a sliding groove, a sliding block and a clamping groove, the sliding groove is arranged on the filter bucket outer cover, the sliding block is slidably arranged on the sliding groove, the sliding block penetrates the filter cartridge fixing frame of the filter bucket outer cover and faces the filter bucket, the clamping groove is arranged on the filter bucket wall, when the filter bucket outer cover is screwed onto the filter bucket, the sliding block is opposite to the clamping groove, the sliding block is moved to the farthest position relative to the sliding groove, and the sliding block is clamped into the clamping groove to limit the circumferential rotation freedom of the filter bucket outer cover and the filter bucket.

[0012] The filter bucket with the double locking structures comprises two locking structures, three components and two action positions, the locking between two positions of the three components is completed through two actions, the locking between the filter cartridge and the filter bucket and the locking between the filter bucket cover and the filter bucket are stable and reliable, the structure is simple and reliable, and the user is convenient to operate. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the whole structure schematic view of the filter bucket with the double locking structures;

[0014] Figure 2 is the locking structure schematic view of the filter bucket with the double locking structures;

[0015] Figure 3 is the filter bucket spring buckle locking structure sectional view of the filter bucket with the double locking structures;

[0016] Figure 4Is the utility model relates to double locking structure's filter barrel embodiment 2's structure diagram;

[0017] Figure 5 Is the utility model relates to double locking structure's filter barrel embodiment 2's structure enlarged view.

[0018] Among them: 10, filter barrel;11, card slot;12, sliding card slot;

[0019] 20, filter core;

[0020] 30, filter barrel inner cover;31, end face;32, peripheral wall;33, protruding clamping strip;34, sliding buckle;

[0021] 40, filter barrel outer cover;41, filter core fixing frame;42, locking hole position;

[0022] 50, inner cover locking structure;

[0023] 60, elastic buckle locking structure;61, elastic buckle;611, main body;612, buckle lever;613, outer push position;62, spring;63, self-locking structure shell.

[0024] 70, sliding buckle locking structure;71, sliding slot;72, sliding block;73, clamping groove.

CONCRETE EMBODIMENT

[0025] The utility model will be described in detail in combination with example, the example described below is exemplary, is only used for explaining the utility model, and can not be understood as the restriction of the utility model.

[0026] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" is positional relationship, only for the convenience of the utility model and simplifying the description, and is not indicated or implied that the device or element indicated must have a particular orientation, a particular orientation configuration and operation, therefore can not be understood as the restriction of the utility model.

[0027] Example 1:

[0028] Please refer to the attached Figure 1 and attached Figure 2Fig. 1 shows a filter bucket with a double locking structure, comprising a filter bucket 10, a filter core 20, a filter bucket inner cover 30 and a filter bucket outer cover 40, the filter core 20 is installed in the filter bucket 10, and the filter bucket inner cover 30 and the filter bucket outer cover 40 are sequentially buckled, a screwing structure is arranged between the filter bucket inner cover 30 and the filter bucket 10, and an inner cover locking structure 50 is arranged on the filter bucket inner cover 30 and circumferentially locked in the inner wall of the filter bucket 10; an outer cover locking structure is arranged between the filter bucket outer cover 40 and the filter bucket 10.

[0029] The filter bucket inner cover 30 comprises an end face 31 and a circumferential wall 32 inserted into the inner wall of the filter bucket, the screwing structure comprises a protruding clamping strip 33 arranged on the circumferential wall 32 of the filter bucket inner cover, and a clamping groove 11 matched with the protruding clamping strip 33 is arranged in the inner wall of the filter bucket 10, the end face 31 of the filter bucket inner cover is inserted into the inner wall of the filter bucket 10, and the protruding clamping strip 33 is screwed and assembled by sliding into the clamping groove 11 in the inner wall of the filter bucket 10 during rotation.

[0030] During assembly, the filter core 20 is first placed into the filter bucket 10, and the filter bucket inner cover 30 is buckled on the filter core 20 to seal part of the filter core 20, the filter bucket inner cover 30 is screwed and buckled on the filter bucket 10 to form a filter core assembly, and then the filter core assembly is installed on the filter bucket outer cover 40.

[0031] The filter bucket inner cover 30 and the filter bucket are clamped by the cooperation of the protruding clamping strip 33 and the clamping groove in the inner wall of the filter bucket 10, the protruding clamping strip 33 enters the clamping groove through the guide inlet at the end of the clamping groove, slides into the clamping groove, and is locked at the deepest position by rotation.

[0032] The inner cover locking structure is used to lock the filter bucket inner cover 30 and the filter bucket 10 to prevent them from loosening. The inner cover locking structure 50 comprises a sliding buckle and a sliding clamping groove 12 arranged between the end face of the filter bucket inner cover and the wall of the filter bucket, the sliding buckle 34 is arranged on the end face 31 of the filter bucket inner cover or the wall of the filter bucket 10, the sliding clamping groove 12 capable of accommodating the sliding buckle 34 is arranged on the other one, the sliding buckle 34 is pushed and inserted into the sliding clamping groove 12 to limit the circumferential rotation freedom degree between the two.

[0033] As shown in Fig. 1, the sliding buckle 34 is arranged on the end face 31 of the filter bucket inner cover, and the sliding clamping groove 12 corresponding to the sliding buckle 34 is arranged on the wall of the filter bucket, the filter bucket inner cover 30 is screwed during circumferential rotation, the sliding buckle 34 is opposite to the sliding clamping groove 12 when the filter bucket inner cover 30 is rotated to a predetermined position, the sliding buckle is pushed and inserted into the sliding clamping groove 12, and the first locking is achieved.

[0034] The filter assembly needs to be assembled to the filter outer cover 40, which includes a part of the filter fixing frame 41. The filter assembly is screwed and assembled to the filter outer cover. At this time, the filter outer cover and the filter assembly need to be locked by the outer cover locking structure. Because the area of the filter fixing frame 41 is relatively large, the fixing structure can also be placed on the filter fixing frame 41. As long as the filter fixing frame 41 is fixed, the filter outer cover 40 part is also fixed.

[0035] Please refer to the attached Figure 2 and attached Figure 3 Two different embodiments of the outer cover locking structure are shown, where the attached Figure 3 is a structural diagram of embodiment 1.

[0036] In this embodiment, the outer cover locking structure adopts a snap buckle locking structure 60, which includes a snap buckle 61, a spring 62 and a self-locking structure shell 63. The snap buckle 61 is assembled in the self-locking structure shell 63 by pressing the spring 62. The buckle rod part of the snap buckle 61 extends out of the self-locking structure shell 63 towards the filter fixing frame 41. There is a locking hole 42 on the filter fixing frame 41 which is matched with the snap buckle 61. When the filter rotates to the preset position, the snap buckle 61 is opposite to the locking hole 42, and the buckle rod of the snap buckle is penetrated through the locking hole 42 under the elastic force of the spring 62. The snap buckle defines the circumferential rotation freedom of the filter 10 and the filter fixing frame 41.

[0037] The snap buckle 61 includes an internal main body 611, an external buckle rod 612 and an external pushing part 613 suitable for manual pushing. The internal main body 611 is clamped into the self-locking structure shell 63 to press the spring 62. The top of the main body 611 is provided with the buckle rod 612, and the direction of the main body 611 away from the filter is the external pushing part 613.

[0038] Through the design of the snap buckle 61, the filter assembly is conveniently installed on the filter fixing frame 41, so that the filter assembly and the filter outer cover 40 will not be loosened to cause the sealing performance to be reduced and water leakage under the condition of long-term pressure use.

[0039] When the filter cartridge assembly is replaced, the outer push position 613 of the alignment self-locking structure 60 is pressed down to drive the snap buckle 61 to move downward, and the filter cartridge assembly is installed on the filter cartridge fixing frame 41, when the filter cartridge assembly is rotated to the preset accurate position, the buckle rod 612 of the alignment self-locking structure 60 is just opposite the locking hole position 42, and is driven by the elastic force of the spring 62, the buckle rod 612 of the snap buckle 61 passes through the locking hole position 42, so that the filter cartridge assembly is fixed to the filter cartridge fixing frame 41. Because the snap buckle 61 is assembled and fixed with the locking hole position 42 of the filter cartridge fixing frame 41, the filter cartridge assembly and the fixing frame are locked, the filter cartridge assembly and the filter cartridge outer cover 40 will not be loosened to cause the sealing performance to be reduced and water to be leaked under the condition of long-time pressure use, and the operation is intuitive and convenient.

[0040] Embodiment 2:

[0041] Please refer to the attached drawings Figure 4 and Figure 5 wherein a second embodiment of the outer cover locking structure is shown, other structures of the embodiment are the same as those of embodiment 1, and the only difference is that the specific implementation structure of the outer cover locking structure is different.

[0042] In the embodiment, the outer cover locking structure adopts a sliding buckle locking structure 70, the sliding buckle locking structure 70 comprises a sliding groove 71, a sliding block 72 and a buckle groove 73, the sliding groove 71 is arranged on the filter cartridge outer cover 40, the sliding block 72 is slidably arranged on the sliding groove 71, the sliding block 72 penetrates the filter cartridge fixing frame of the filter cartridge outer cover 40 and faces the filter cartridge, the buckle groove is arranged on the filter cartridge wall, when the filter cartridge outer cover 40 is screwed onto the filter cartridge 10, the sliding block 72 is opposite to the buckle groove 73, the sliding block moves to the farthest position relative to the sliding groove, and the sliding block is buckled into the buckle groove to limit the circumferential rotation freedom degree of the filter cartridge outer cover and the filter cartridge.

[0043] The filter cartridge and the filter cartridge locking buckle structure of the utility model relate to the field of filter cartridge and filter cartridge locking buckle structure, and guarantee the reliability of the connecting locking buckle, and simultaneously consider convenience. Through the design of the double locking structure, the locking between every two positions of three components is completed through two action positions, the locking between the filter cartridge and the filter cartridge and the locking between the filter cartridge cover and the filter cartridge is stably and reliably realized, the structure is simple and reliable, and the user is convenient to operate.

[0044] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form, although the present application is disclosed as above with preferred embodiments, however, is not intended to limit the present application, any skilled in the art, without departing from the technical scheme of the present application, when the above disclosed technical content is made some changes or modifications for equivalent embodiments of equivalent changes, but whatever is not out of the technical scheme of the present application, according to the present application, any simple modification, equivalent change and modification of the above embodiments, all belong to the scope of the technical scheme of the present application.

Claims

1. A double locking structure filter bucket comprising a filter bucket, a filter cartridge, an inner cover of the filter bucket and an outer cover of the filter bucket, the filter cartridge is installed in the filter bucket, and the inner cover of the filter bucket and the outer cover of the filter bucket are covered in sequence, characterized in that, The filter barrel inner cover and the filter barrel are provided with a convex clamping strip and a clamping groove matched tightening structure, and the filter barrel inner cover is provided with an inner cover locking structure circumferentially locked to the filter barrel; the filter barrel outer cover and the filter barrel are provided with an outer cover locking structure.

2. The double-locked structure of the filter bucket according to claim 1, characterized in that, The filter barrel inner cover includes an end face and a circumferential wall inserted into the inner wall of the filter barrel, the tightening structure includes a convex clamping strip arranged on the circumferential wall of the filter barrel inner cover, and a clamping groove matched with the convex clamping strip is arranged on the inner wall of the filter barrel, the end face of the filter barrel inner cover is inserted into the inner wall of the filter barrel, and the convex clamping strip is slid into the clamping groove of the inner wall of the filter barrel during rotation to be tightly assembled.

3. The double-locked filter bucket according to claim 2, wherein, The inner cover locking structure is provided with a sliding buckle and a sliding clamping groove between the end face of the filter barrel inner cover and the wall of the filter barrel, the sliding buckle is arranged on the end face of the inner cover or the wall of the filter barrel, and the sliding clamping groove matched with the sliding buckle is arranged on the other one, the sliding buckle is pushed and inserted into the sliding clamping groove to limit the circumferential rotation freedom degree between the two.

4. The double-locked filter bucket according to any one of claims 1 to 3, wherein The outer cover locking structure includes a spring buckle locking structure and a sliding buckle locking structure.

5. The double-locked filter bucket according to claim 4, wherein, The spring buckle locking structure includes a spring buckle, a spring and a self-locking structure shell, the spring buckle is assembled in the self-locking structure shell by pressing the spring, the buckle rod part of the spring buckle extends out of the self-locking structure shell and faces the direction of the filter cartridge outer cover, and the filter cartridge outer cover includes a filter cartridge fixing frame, the filter cartridge fixing frame is provided with a locking hole matched with the spring buckle, when the filter cartridge assembly is rotated to a preset position, the spring buckle opposite to the locking hole is penetrated by the spring buckle rod through the locking hole.

6. The double-locked filter bucket according to claim 5, wherein, The spring buckle includes an internal main body, an external buckle rod and an external pushing part suitable for being pushed by a hand, the internal main body is clamped into the self-locking structure shell and presses the spring, the top of the main body is provided with the buckle rod, and the direction of the main body away from the filter cartridge is the external pushing part.

7. The double-locked filter bucket according to claim 4, wherein The sliding buckle locking structure includes a sliding groove, a sliding block and a clamping groove, the sliding groove is arranged on the filter cartridge outer cover, the sliding block is slidably arranged in the sliding groove, the sliding block penetrates the filter cartridge fixing frame of the filter cartridge outer cover and faces the direction of the filter cartridge, and the clamping groove is arranged on the wall of the filter cartridge, when the filter cartridge outer cover is tightly screwed onto the filter cartridge, the sliding block opposite to the clamping groove is moved to the farthest position relative to the sliding groove, and the sliding block is clamped into the clamping groove to limit the circumferential rotation freedom degree of the filter cartridge outer cover and the filter cartridge.

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