Filter bottle locking mechanism

Abstract

The utility model discloses a filter bottle locking mechanism, including filter bottle and frame body, filter bottle is inserted into the frame body, is equipped with at least lock tongue with filter bottle cooperation on the frame body, and lock tongue has first inclination and side's second inclination, and second inclination cooperates with the end of handle, can push lock tongue and unlock, and the lock tongue place outside frame body is equipped with limit end, and the hook portion is equipped with outside the frame body with the limit end cooperation of handle outside the hinge point. The utility model discloses only using the shape design of lock tongue and the cooperation with handle, and simultaneously using the cooperation of hook portion and limit end, completes to filter bottle and locking and unlocking, and the simple structure is reliable in utilization.

Description

Technical Field

[0001] This utility model belongs to the field of water purifier technology, and in particular relates to filter bottles for water purifiers, and more specifically, to a filter bottle locking mechanism. Background Technology

[0002] Water purifiers require filter bottles to be connected to the water circuit to complete filtration. Since filter bottles need to be replaced after a period of use, they are consumable parts. When designing a water purifier, it's essential to ensure both a stable and reliable filter bottle connection and easy removal for replacement. Therefore, designing a locking mechanism separately from the water circuit connection of the filter bottle is a good practice.

[0003] CN113929162A discloses a filter element and a water purifier using the filter element. The non-water contact end of the filter element (40) is provided with a filter element locking part (43) for cooperating with a latch (2). The filter element locking part (43) is formed to be adapted to the latch locking part (21) of the latch (2) so that the filter element (40) can be locked and released by moving in and out of the filter element locking part (43) through the latch locking part (21). The non-water contact end of the filter element (40) A handle (4015) is hinged to the top. The handle (4015) has a handle limiting groove (441) on the side facing the filter element locking part (43). The latch (2) is also provided with a latch limiting part (24). When the filter element (40) is locked, the end of the latch limiting part (24) can be accommodated in the handle limiting groove (441) to prevent the handle (4015) from shaking under the action of external force and affecting the stability of the filter element (40).

[0004] The drawback of the aforementioned prior art is its complex structure and high cost. The applicant previously applied for a utility model patent entitled "A Filter Bottle Locking Mechanism," application number 2025215102923, whose technical solution is as follows: It includes a filter bottle and a frame. The filter bottle is inserted into the frame, and the water inlet at the front end of the filter bottle is connected to the water inlet seat at the bottom of the frame. The frame is provided with at least one locking tongue, which extends from the side wall of the frame into the frame under the action of a spring and engages with the filter bottle. The portion of the locking tongue extending into the frame has a first inclined surface on its upper surface and a second inclined surface on its side, i.e., in the circumferential direction facing the frame. The filter bottle is equipped with a handle at its rear end. The handle includes an arched body that is hinged to the rear end of the filter bottle at both ends and can be parallel or perpendicular to the rear end face of the filter bottle. The handle body extends to both ends and has an end that extends beyond the hinge point. The rear end of the filter bottle has a hollow space on the circumferential side wall below the hinge point to accommodate the end of the handle. When the handle is perpendicular to the rear end face of the filter bottle, its end is in the hollow space. When the handle is parallel to the rear end face of the filter bottle, its end covers the hollow space from the rear. The hollow space is empty and can be used to accommodate the part of the locking tongue that extends into the frame.

[0005] The aforementioned proposed solution utilizes only the shape of the locking tongue and its interaction with the handle to lock and unlock the filter bottle. However, precisely because of its simplicity, consumers may have concerns that the filter bottle might fall off when vibrated while locked. Therefore, we have made further design improvements based on the aforementioned technical solution. Summary of the Invention

[0006] The purpose of this invention is to provide a filter bottle locking structure with higher reliability.

[0007] This utility model adopts the following technical solution: a filter bottle locking mechanism, including a filter bottle and a frame, wherein the filter bottle is inserted into the frame, and the water inlet at the front end of the filter bottle is connected and engaged with the water inlet seat at the bottom of the frame; the frame is provided with at least one locking tongue, which extends into the frame from the side wall of the frame under the action of a spring and engages with the filter bottle; the characteristic is that: the upper surface of the portion of the locking tongue extending into the frame is a first inclined surface; its side surface, i.e., the circumferential direction facing the frame, has a second inclined surface;

[0008] The filter bottle is equipped with a handle at the rear end. The handle includes an arched body that is hinged to the rear end of the filter bottle at both ends and has two states: parallel or perpendicular to the rear end face of the filter bottle. The handle body extends to both ends and has an end that extends beyond the hinge point. The rear end of the filter bottle has a hollow space on the circumferential side wall below the hinge point to accommodate the end of the handle.

[0009] When the handle is perpendicular to the rear end face of the filter bottle, its end is in the hollow space; when the handle is parallel to the rear end face of the filter bottle, its end covers the hollow space from the rear. The hollow space is empty and can be used to accommodate the part of the locking tongue that extends into the frame.

[0010] The locking tongue outside the frame is provided with a limiting end; the handle is provided with a hook outside the hinge point, which cooperates with the limiting end outside the frame.

[0011] The limiting end and the hook part have arc-shaped convex and concave surfaces, respectively, and they cooperate with each other.

[0012] Furthermore, the frame is provided with two locking tongues, which correspond to the hollow spaces below the hinge points at both ends of the handle; the second bevels of the two locking tongues face the same direction when viewed in a straight line, and face opposite directions when viewed in a circumferential direction.

[0013] The water interface seat at the bottom of the frame is arranged asymmetrically within the frame.

[0014] The outer diameter of the front part of the filter bottle is smaller than the outer diameter of the rear part of the filter bottle, and the two are connected by a circumferential inclined surface.

[0015] The lower surface of the portion of the locking tongue that extends into the frame is a third inclined surface.

[0016] When using this utility model, the filter bottle is inserted into the frame. Since the water inlet and the corresponding water inlet seat are asymmetrically arranged, the filter bottle needs to be adjusted to a specific angle in advance so that the water inlet and the water inlet seat can be inserted and matched. At this specific angle, the handle and hinge point at the rear of the filter bottle also correspond to the locking tongue on the frame; at the same time, the limiting end and the hook of the handle also correspond.

[0017] As the filter bottle enters the frame, the circumferential bevel between its front and rear sections first contacts the locking tongue, pushing it outwards and allowing the filter bottle to enter the frame completely. When the filter bottle is fully inserted and the water inlet and water inlet seat are properly engaged, the hinge of the handle corresponds to the locking tongue. At this point, the handle is lowered to an angle level with the rear end of the filter bottle. The hook of the handle engages with the limiting end, and the open space is empty. The locking tongue, under its own spring force, pops inwards into the open space, locking the filter bottle and preventing it from moving upwards.

[0018] When removing the filter bottle, turn the handle to an angle perpendicular to the rear end of the filter bottle. As the handle rotates, its hook moves away from the limiting end, and at the same time, its end pushes the second inclined surface of the locking tongue, causing the locking tongue to retract out of the frame body against its own elasticity, thus allowing the filter bottle to be removed from the frame body.

[0019] Since there may be a gap between the end of the handle and the rear end of the filter bottle, the locking tongue may get stuck in this gap. Therefore, this invention also designs a third inclined surface on the locking tongue. After the end of the handle has pushed the locking tongue back, even if the locking tongue pops out again, its third inclined surface is sufficient for it to be pushed by the filter bottle, so that it will not get stuck in the filter bottle.

[0020] As can be seen from the above description, when locking, this utility model utilizes not only the engagement of the latch and the open space, but also the engagement of the hook and the limiting end, further increasing its capabilities. When unlocking, a single action of opening the handle is sufficient to first disengage the hook from the limiting end, and then disengage the latch from the open space. Therefore, this utility model is equally simple to use, but its effectiveness is more reliable. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the aforementioned conflicting application.

[0022] Figure 2 This is a schematic diagram of the conflicting application and the filter bottle in this embodiment.

[0023] Figure 3 This is a schematic diagram of the conflicting application and the locking tongue assembly in this embodiment.

[0024] Figure 4 , Figure 5 This is a schematic diagram of the conflicting application and the locking tongue in this embodiment.

[0025] Figure 6 This is a schematic diagram of the handle in this embodiment.

[0026] Figure 7 This is a partial schematic diagram of the conflicting application in the locked state.

[0027] Figure 8 This is a partial diagram showing the conflicting application in the unlocked state.

[0028] Figure 9 This is a partial schematic diagram of the locked state in this embodiment.

[0029] Figure 10 This is a partial schematic diagram of the unlocked state in this embodiment.

[0030] The attached figures are labeled as follows: 1-Frame; 11-Frame bottom cover; 12-Water inlet seat; 13-Limiting end; 2-Lock assembly; 21-Lock seat; 22-Lock; 220-Lock shaft; 221-First inclined surface; 222-Second inclined surface; 223-Third inclined surface; 23-Spring; 3-Filter bottle; 31-Rear end of filter bottle; 311-Upper rear end face of filter bottle; 312-Lower rear end face of filter bottle; 313-Hinge point; 314-Cavity; 32-Rear part of filter bottle; 33-Front part of filter bottle; 34-Circumferential inclined surface; 4-Handle; 41-Hinge shaft; 42-End; 43-Hook. Detailed Implementation

[0031] See Figure 1 , Figure 2 This embodiment includes a frame 1 and a filter bottle 3. The frame 1 is a hollow tubular shape that can accommodate the filter bottle 3. A bottom cover 11 is fixed to the bottom of the frame 1, and a water inlet seat 12 is provided on the bottom cover. The filter bottle 3 has a front part 33 and a rear part 32, which are connected by a circumferential inclined surface 34. The front end of the front part 33 of the filter bottle has a water inlet (not visible in the figure), which can be inserted and mated with the water inlet seat 12. A handle 4 is installed at the rear end 31 of the filter bottle 3.

[0032] The end face of the filter bottle rear end 31 is divided into upper and lower parts, namely the upper rear end face 311 and the lower rear end face 312, with a height difference between the two parts, and the two hinge points 313 serving as the dividing points; the hinge shaft 41 of the handle 4 cooperates with the hinge points 313 to make the handle hinged to the filter bottle rear end 31. When the handle is closed, it is parallel to the rear end face of the filter bottle and exactly fills the height difference between the upper rear end face 311 and the lower rear end face 312; when the handle is open, it is perpendicular to the rear end face of the filter bottle.

[0033] Below the two hinge points 313 is a cavity 314, which is the hollow space mentioned above. Two locking tongue assemblies 2 are provided on the frame, which are symmetrically fixed to the side wall of the frame and their positions cooperate with the cavity 314.

[0034] See Figure 3 , Figure 4 , Figure 5 The latch assembly 2 consists of a latch seat 21, a latch 22, and a spring 23. The latch 22 is pivotally mounted on the latch seat via a latch shaft 220. The spring 23 abuts against the back of the latch 22, pushing the latch outward. When the latch assembly is installed on the frame, it pushes the latch inward into the frame.

[0035] The latch 22 extends into the head of the frame and has a first inclined surface 221 on the upper surface, a third inclined surface 223 on the lower surface, and a second inclined surface 222 on the side. The first inclined surface 221 extends inward and downward, and the third inclined surface 223 extends inward and upward. The second inclined surfaces 222 of the two latches 22 on both sides of the frame are perpendicular to the handle and have the same inclination direction. If viewed from the circumference of the frame, the two second inclined surfaces are opposite to each other, or axially symmetrical.

[0036] See Figure 6 The handle 4 includes an arched body that is hinged to the rear end of the filter bottle via two hinge shafts 41; the portion of the arched body extending to both ends and passing over the hinge shafts 41 forms the end portion 42. The handle 4 has a hook portion 43 on the outside of the hinge shafts, with an arc-shaped concave surface. When the handle is closed, it is parallel to the rear end face of the filter bottle, and its end portion 42 is positioned above the cavity 314; when the handle is open, it is perpendicular to the rear end face of the filter bottle, and its end portion extends into the cavity 314.

[0037] See Figure 1 , Figure 7 , Figure 9 The filter bottle 3 is housed within the frame 1, with the handle 4 in the closed position, parallel to the rear end face of the filter bottle. Its end 42 covers the top of the cavity 313, and the hook of the locking tongue 22 can extend into the cavity 313 under the elastic force of the spring 23; at the same time, the hook 43 of the handle engages with the limiting end 13 on the frame, thereby preventing the filter bottle 3 from moving upward and achieving locking.

[0038] See Figure 1 , Figure 8 , Figure 10 When the filter bottle needs to be removed, turn the handle 4 to the open position, that is, perpendicular to the rear end face of the filter bottle. At this time, the hook part 43 of the handle moves away from the limiting end 13 on the frame, and the end 42 of the handle extends into the cavity 313. Through the cooperation with the second inclined surface 222 of the locking tongue, the hook part of the locking tongue 22 is pushed out of the cavity 313 by overcoming the elastic force of the spring 23. At this time, the locking tongue no longer locks the filter bottle, and the user can grab the handle to remove the filter bottle.

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