Filter element self-locking structure of water purifier

Abstract

The utility model discloses a filter element self-locking structure of a water purifier, which comprises a filter element and a filter element seat, the end part of the filter element extends into the filter element seat and is detachably matched with the filter element seat, the filter element seat is provided with an axial ejection column and a first spring, the outer edge of the end part of the filter element is provided with an axial diagonal plane, and a reset block is arranged behind the end part of the filter element; at least two lock tongues are arranged on the side wall of the filter element seat, and each lock tongue is provided with a planar front surface and a smooth cambered-surface-shaped rear surface; the spring bolt is mounted on the side wall of the filter element seat through a radial second spring, so that the spring bolt can do telescopic motion along the radial direction of the filter element seat, and the front surface or the rear surface of the spring bolt is respectively matched with the end part of the filter element or the reset block. According to the utility model, the filter element can be mounted and locked by pushing the filter element forwards, namely pressing the filter element; the filter element can be unlocked and taken out by pressing the filter element again, and the operation is very convenient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of water purifier, especially relate to the filter core self -locking structure of water purifier. BACKGROUND

[0002] The filter core is the core component of the water purifier, and needs to be replaced after a period of use. Therefore, the connection between the filter core and the filter core seat requires that it can be stably installed to avoid the phenomenon of filter core separation from the filter core seat or water leakage, and can be conveniently removed and installed from the filter core seat. Under this requirement, the connection structure of the filter core and the filter core seat is quite complex, and even professional personnel and special tools are required to replace the filter core.

[0003] CN203935692U discloses a filter core self-locking structure, which comprises a filter core, a filter core seat, a clamping piece inserted into the filter core seat and movable up and down, and an adjusting switch. The filter core seat is connected to the upper end of the filter core, the clamping piece has a clamping end and a connecting end, the connecting end extends to the outside of the filter core seat, and a driving mechanism for driving the clamping piece to move up and down is arranged between the adjusting switch and the connecting end. This structure uses a driving mechanism to drive the clamping piece to move up and down in the filter core seat. When the clamping piece moves downward, the clamping end limits the rotation of the filter core relative to the filter core seat. When the clamping piece moves upward, the clamping piece is separated from the filter core, and at this time, the filter core can rotate relative to the filter core seat. This scheme needs to operate the clamping piece when replacing the filter core, and the clamping piece is located at the joint of the filter core and the filter core seat, that is, it not only needs to hold the tail end of the filter core, but also needs to operate the front end of the filter core. The space layout of the front end of the filter core is quite compact, and it is not easy to perform similar operations. SUMMARY

[0004] The utility model aims at providing a filter core self-locking structure of water purifier which is more convenient to operate.

[0005] The utility model adopts the technical scheme is such: the filter core self-locking structure of water purifier, including filter core and filter core seat, the end of filter core stretches into filter core seat with filter core seat detachably cooperates, its characterized in that:

[0006] The filter core seat has a plurality of axial ejection columns, and the ejection columns have first springs to touch the end face of the filter core;

[0007] The end of the filter core has an axial chamfer, and the chamfer is inward and forward;

[0008] The rear of the filter core end is provided with a reset block, the reset block has a front inclined surface and a rear inclined surface in the axial direction, wherein the front inclined surface is inward and forward, and the rear inclined surface is inward and rearward; the reset block is connected to the rear of the filter core end through a reset spring, when the reset spring is compressed, the front inclined surface of the reset block is fitted with the bevel surface of the filter core end; when the reset spring is stretched, the front inclined surface of the reset block is parallel to the bevel surface of the filter core end;

[0009] The side wall of the filter core seat is provided with at least two lock tongues, the lock tongue has a planar front surface and a smooth arc rear surface; the lock tongue is installed on the side wall of the filter core seat through a radial second spring, so as to be capable of stretching and contracting along the radial direction of the filter core seat, and the front surface or the rear surface is matched with the filter core end or the reset block respectively.

[0010] Further, the rear of the filter core end is provided with a fixed abutting end, when the reset spring is stretched, the reset block abuts against the abutting end.

[0011] Further, the elastic force of the first spring is greater than that of the reset spring.

[0012] The utility model defines front and rear according to the movement direction of the filter core, that is, the direction of the filter core towards the filter core seat is front, and the opposite direction is rear; on the circumferential surface, the direction towards the center is inner, and the opposite direction is outer.

[0013] When the filter core is installed, the filter core is pushed forward into the filter core seat, in the process, the front end of the filter core pushes away the lock tongue through the smooth arc surface of the lock tongue and enters the filter core seat, after the front end of the filter core passes the lock tongue, the lock tongue stretches inward under the elastic force of the second spring and is clamped between the front end of the filter core and the reset block, so that the filter core cannot retreat; at this time, the reset block still stays on the rear side of the lock tongue.

[0014] When the filter core is replaced, the filter core is continuously pushed forward, so that the front end of the filter core compresses the ejecting column; at this time, the front end of the filter core pulls the reset block forward through the reset spring, and the abutting end on the filter core also pushes the reset block forward, so that the reset block also pushes away the lock tongue through the smooth arc surface of the lock tongue and reaches the front side of the lock tongue; after the pressure on the filter core is released, the filter core is ejected rearward under the action of the ejecting column, because the reset block is blocked by the front surface of the lock tongue at this time, the reset block cannot move, but the reset spring is compressed until the front inclined surface of the reset block is fitted with the bevel surface of the filter core end; at this time, the reset block and the front end of the filter core are ejected rearward as a whole, the reset block pushes away the lock tongue through the rear inclined surface, so that the front end of the filter core also exits the lock tongue and is unlocked.

[0015] As can be seen from the above description, the filter core is pushed forward, that is, the filter core is pressed, so that the filter core can be installed and locked; the filter core is pressed again, so that the filter core can be unlocked and taken out, and the operation is very convenient. DRAWINGS

[0016] Figure 1 is the appearance schematic view of the utility model.

[0017] Figure 2 is the exploded schematic view of the utility model.

[0018] Figure 3 is the cross section schematic view of the utility model in the locked state.

[0019] Figure 4 is Figure 3 the enlarged view of A in the middle.

[0020] Figure 5 is the cross section schematic view of the utility model in the unlocking state.

[0021] Figure 6 is Figure 5 the enlarged view of B in the middle.

[0022] Figure 7 is the cross section schematic view of the utility model in the unlocking state.

[0023] Figure 8 is Figure 7 the enlarged view of C in the middle. DETAILED DESCRIPTION

[0024] Referring to the drawings. The embodiment is composed of filter core seat 1, filter core 2, frame 3, frame 3 is connected and fixed with filter core seat 1, filter core 2 is inserted into the frame, and is detachably connected with filter core seat 1. Filter core seat 1 includes bottom plate 10, three ejection columns 11, and each has elastic force upward first spring 12; filter core seat side wall also has two symmetrical lock latches 15, and each has elastic force inward second spring 16. Filter core 2 is loaded into filter core seat from top to bottom, so in the embodiment, the front of filter core is the lower. Filter core 2 front end has end portion 21, and end portion rear has annular reset block 22, which is connected behind end portion 21 through annular reset spring 23. Wherein the edge of filter core's end portion 21 has forward and inward bevel 211; reset block has front bevel 221 and rear bevel 222 from the cross section, and the inclination direction of front bevel is forward and inward, and the inclination direction of rear bevel is rearward and inward, thereby forming approximately triangular cross section.

[0025] In the locked state, filter core 2 is inserted into filter core seat 1 from top to bottom, and end portion 21 pushes away lock latch 15, when bevel 211 completely passes through the lock latch, the lock latch moves inward under the push of second spring 16, is clamped behind the bevel, and reset block 22 is blocked behind the lock latch. At this time, filter core 2 is blocked by lock latch 15 and cannot retreat, forming a locked state. Of course, at this time, there is still a waterway connected between the filter core and the filter core seat, which is well known in the art and does not need to be repeated.

[0026] When the filter needs to be unlocked, the filter 2 is pressed down again, the filter end continues to move down, so that the ejector post 11 and the first spring 12 are compressed, while the reset spring 23 pulls the reset block 22 on one hand, and the abutting end on the filter, i.e. the inward and forward inclined surface 24 pushes the reset block 22 on the other hand, so that it passes the lock tongue 15 and reaches below the lock tongue.

[0027] When the pressure on the filter is released, the filter is pushed up by the ejector post 11 and the first spring 12, at this time the reset block is attached to the filter end, i.e. the chamfered surface 211 of the filter end coincides with the front inclined surface 221 of the reset block, and the two are pushed up as a whole, the reset block rear inclined surface 222 can push open the lock tongue, so that the second spring 16 is compressed, the lock tongue is withdrawn outward, so that the filter can pass the lock tongue upwards, forming an unlocked state. Of course, at this time the waterway connection between the filter and the filter seat is also disconnected.

Claims

1. A filter core self-locking structure of a water purifier, comprising a filter core and a filter core seat, the end of the filter core extending into the filter core seat and detachably cooperating with the filter core seat, characterized in that: the filter core seat is provided with a plurality of axial ejection columns, and the ejection columns are provided with a first spring so as to abut against the end face of the filter core; the outer edge of the end of the filter core is provided with an axial chamfer, and the chamfer is inward and forward; the rear of the end of the filter core is provided with a reset block, the reset block is provided with a front chamfer and a rear chamfer in the axial direction, the front chamfer is inward and forward, and the rear chamfer is inward and rearward; the reset block is connected to the rear of the end of the filter core through a reset spring, when the reset spring is compressed, the front chamfer of the reset block is in abutment with the chamfer of the end of the filter core; when the reset spring is stretched, the front chamfer of the reset block is parallel to the chamfer of the end of the filter core; the sidewall of the filter core seat is provided with at least two lock latches, the lock latches are provided with a planar front surface and a smooth arc-shaped rear surface; the lock latches are installed on the sidewall of the filter core seat through a radial second spring, so as to be capable of performing telescopic movement along the radial direction of the filter core seat, and the front surface or the rear surface of the lock latches is respectively in cooperation with the end of the filter core or the reset block. the rear of the end of the filter core is provided with a fixed abutting end, when the reset spring is stretched, the reset block is in abutment with the abutting end. the elastic force of the first spring is greater than the elastic force of the reset spring. ​ ​ 2. The filter core self-locking structure of a water purifier according to claim 1, characterized in that: ​ 3. The filter core self-locking structure of a water purifier according to claim 1 or 2, characterized in that: ​

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