CN109953687A - Vacuum cleaner - Google Patents

Abstract

Present invention discloses a kind of dust catchers, including bracket component and the dirt cup component being assembled on the bracket component, it is characterized in that, the dirt cup component includes dirt cup, dust outlet below the dirt cup, linkwork, it is coupled to below the dirt cup by the linkwork activity with the dirt cup lid and locking mechanism for being opened and closed the dust outlet, the locking mechanism includes unlock piece, first holding piece and the second holding piece, first holding piece can be coupled or disengage with second holding piece so that the dirt cup lid is corresponding to close or open the dust outlet, the unlock piece is rotationally connected on the dirt cup or the bracket component between non-operating position and unlocked position；Wherein, when the unlock piece turns to the unlocked position by the non-operating position, the unlock piece can drive first holding piece and second holding piece disconnected from each other.The present invention can key unlock, easy to operate and structure is simple.

Description

Vacuum cleaner

technical field

The invention relates to a vacuum cleaner, which belongs to the technical field of small household appliance manufacturing.

Background technique

Vacuum cleaners are well known and have been manufactured and sold by various manufacturers for many years and include a dust cup with a dust outlet below, a dust cup lid assembled to the bottom of the dust cup, and a locking mechanism. After the floor cleaning operation is completed, the dust cup cover can be moved relative to the dust cup by operating the locking mechanism to open the dust discharge port, thereby discharging the collected dust. However, in the current vacuum cleaner, in order to ensure the tightness and relative stability between the dust cup cover and the dust cup, the locking force of the locking mechanism is often set to be large, and the existing push-type locking mechanism requires The user needs a lot of strength to unlock, which makes it difficult for the operator to unlock, and the transmission structure is complicated. At the same time, in order to take care of the appearance of the vacuum cleaner, the pressing parts are often made very small, which increases the difficulty for the operator to unlock.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a vacuum cleaner to solve the problems of complicated structure and difficult unlocking operation of the existing locking mechanism.

To achieve the above object, an embodiment of the present invention provides a vacuum cleaner, including a bracket assembly and a dust cup assembly assembled to the bracket assembly, the dust cup assembly including a dust cup and a dust discharger disposed below the dust cup. an outlet, a hinge mechanism, a dust cup cover movably coupled to the bottom of the dust cup through the hinge mechanism for opening and closing the dust discharge port, and a locking mechanism, the locking mechanism includes an unlocking member, a first lock A holder and a second lock holder, the first lock holder and the second lock holder can be matched or disengaged to make the dust cup cover correspondingly close or open the dust discharge port, the The unlocking member is rotatably connected to the dust cup or the bracket assembly between the non-operating position and the unlocking position; wherein, when the unlocking member is rotated from the non-operating position to the unlocking position, the unlocking A member can drive the first locking member and the second locking member to disengage from each other.

In a further embodiment of the present invention, the bracket assembly includes a first bracket and a second bracket, the dust cup assembly has a longitudinal axis and a transverse direction perpendicular to the axis, and the first bracket is assembled on the A lateral side of the dust cup assembly extends upward and its lower end is not lower than the dust cup assembly, and the second bracket includes a second assembly portion assembled on the other lateral side of the dust cup assembly and connected to the dust cup assembly. a support portion extending downward from the lower end of the second assembly portion;

The hinge mechanism and the locking mechanism are located on opposite lateral sides of the dust cup assembly, and when the dust cup cover opens the dust discharge port, the dust cup cover moves away from the dust cup through the hinge mechanism. Rotate in the direction of the support portion.

In a further embodiment of the present invention, the first bracket includes a connecting rod that extends upward and can be telescopically arranged and a handle connected to the upper end of the connecting rod, and the support portion of the second bracket extends downward and can be connected to a ground In the treatment device, the support part and the second assembly part have an air flow channel that can communicate with the dust cup assembly and the ground treatment device.

In a further embodiment of the present invention, the hinge mechanism is disposed on the front side of the dust cup and below the first bracket; the locking mechanism is disposed on the rear side of the dust cup and close to the Second bracket.

In a further embodiment of the present invention, one of the first locking member and the second locking member is disposed on the dust cup cover, the first locking member and the second locking member The other one of the holders is arranged on the dust cup or the bracket assembly;

The first locking member and the second locking member can be snap-fitted to each other.

In a further embodiment of the present invention, the first locking member is a hook disposed on the dust cup cover, and the second locking member is a holding wall formed on the dust cup; when When the dust cup cover closes the dust discharge port, the hook is engaged with the retaining wall, and the retaining wall restricts the vertical downward movement of the hook, so that the dust The lid of the cup remains closed to the dust discharge port.

In a further embodiment of the present invention, when the hook and the retaining wall are mated with each other, an unlocking space is formed between the hook and the dust cup;

When the unlocking member is rotated from the non-operated position to the unlocking position, at least a part of the unlocking member can extend into the unlocking space and push the hook to gradually disengage the holding wall.

In a further embodiment of the present invention, the hook includes an elastic free end and a fixed end connected to the dust cup cover, and when the hook is engaged with the retaining wall, the unlocking member will have a free end. Under pushing, the elastic free end can be elastically deformed and open outward away from the dust cup, so that the hook can be disengaged from the retaining wall.

In a further embodiment of the present invention, the elastic free end includes a locking wall matched with the locking wall and a guiding inclined surface located above the locking wall, between the guiding inclined surface and the dust cup forming the unlocking space; the unlocking member includes an unlocking portion, the unlocking portion has a matching slope matching the guide slope, and the unlocking portion extends downward into the unlocking space; when the unlocking member is When the non-operated position is rotated to the unlocking position, the unlocking portion presses against the guiding inclined surface to push the elastic free end away from the dust cup to open outward.

In a further embodiment of the present invention, the unlocking member includes an operating portion, and the operating portion extends outward from the side wall of the dust cup and is used for receiving a pressing operation by an operator, so that the unlocking member is positioned on the The non-operated position is rotated down to the unlocked position.

In a further embodiment of the present invention, the unlocking member includes a pivot portion pivotally connected with the dust cup or the bracket assembly, an operating portion for receiving user operations, and a pivot portion connected to the first locking member and/or For the unlocking portion matched with the second locking member, the ratio of the distance from the operating portion to the pivoting portion and the distance from the unlocking portion to the pivoting portion is greater than or equal to 2.

In a further embodiment of the present invention, the ratio of the distance from the operating part to the pivoting part and the distance from the unlocking part to the pivoting part is 3-5.

Compared with the prior art, the beneficial effect of the present invention is that: by optimizing the structure of the locking mechanism, while ensuring the sealing and relative stability between the dust cup cover and the dust cup, it is possible to achieve One key to unlock, the operator can make the dust cup cover automatically open the dust discharge port by operating the unlocking piece without too much effort, which makes the operation of dust discharge simpler and more labor-saving, and the structure is simple and firm.

Description of drawings

1 is a schematic structural diagram of an upright vacuum cleaner according to an embodiment of the present invention;

2 is a schematic structural diagram of a dust cup assembly according to an embodiment of the present invention;

Fig. 3 is a longitudinal sectional view along line A-A in Fig. 2;

4 is a schematic diagram of the cooperation of the dust cup cover, the hook and the unlocking member according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an unlocking member according to an embodiment of the present invention.

Detailed ways

The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and structural, method, or functional changes made by those skilled in the art according to these embodiments are all included in the protection scope of the present invention.

Commonly used vacuum cleaners include vertical vacuum cleaners, horizontal vacuum cleaners, portable vacuum cleaners, etc. In an embodiment of the present invention, the technical solution will be described in detail by taking the vertical vacuum cleaner as an example.

1 to 5, the present embodiment provides an upright vacuum cleaner 100, including a bracket assembly, a body assembly 10, a dust cup assembly for collecting dust, and a ground treatment device 40 for contacting the ground for cleaning the ground . The ground treatment device 40 includes any one of a floor brush, a round brush, a dust brush and a flat suction.

Referring to FIG. 1 , the dust cup assembly is generally configured as a cylindrical structure and has an elongated axial direction V and a transverse direction perpendicular to the axial direction V. As shown in FIG. In order to clearly express the position and direction described in this embodiment, referring to the u-d direction shown in FIG. 1 , the direction defined by the axis V is defined as the up-down direction (also called the longitudinal or vertical direction), wherein the direction u is shown in the figure. The arrow points to "up", the direction d arrow points to "down"; the lateral direction defined by the f-b direction is defined as the front-rear direction, wherein the direction f arrow points to "front", the direction b arrow points to "rear" ".

The bracket assembly includes a first bracket 21 assembled on one lateral side of the dust cup assembly and a second bracket 22 assembled on the other lateral side of the dust cup assembly. In this embodiment, the first bracket 21 and the second bracket 22 are assembled on the front side and the rear side of the dust cup assembly, respectively. In other words, the relative positions of the first bracket 21 and the second bracket 22 are generally limited. the front-rear direction of the vacuum cleaner 100.

Specifically, the first bracket 21 includes a first assembly portion 212 and a handle 211 . The first assembly portion 212 is fixedly assembled on the front side of the body assembly 10 and the dust cup assembly. The lower end of the first assembly portion 212 constitutes the lower end of the first bracket 21 and is not lower than the The lower end of the dust cup assembly. In this embodiment, the first assembly part 212 is a connecting rod that extends upward and can be telescopically arranged, and the upper end of the first assembly part 212 extends upward beyond the fuselage assembly 10 until it is connected to the handle 211 ; the handle 211 can be operated the user holds to operate/move the vacuum cleaner 100.

The second bracket 22 includes a second assembly portion 221 and a support portion 222 . The second assembling part 221 is fixedly assembled on the rear side of the body assembly 10 and the dust cup assembly and is opposite to the first assembling part 212; the supporting part 222 is connected to the second assembling part The lower end of the portion 221 extends downward to a position lower than the dust cup assembly, and the lower end of the support portion 222 is assembled and connected to the ground treatment device 40 . The support part 222 and the second assembly part 221 have an air flow channel that can communicate with the dust cup assembly and the ground treatment device 40 , and the dust-laden airflow at the ground treatment device 40 can enter through the air flow channel inside the dust cup assembly.

Referring to FIGS. 1 to 3 , the dust cup assembly includes a cup body mechanism 30 , a hinge mechanism 50 and a locking mechanism.

Specifically, the cup body mechanism 30 includes a dust cup 31 , a dust inlet port 311 provided above the dust cup 31 , a dust discharge port provided below the dust cup 31 , and a dust cup cover 32 . The dust cup 31 includes a cylindrical side wall 310 ; the body assembly 10 is sealed and connected to the dust inlet 311 ; the dust cup cover 32 is movably connected to the dust inlet 311 through the hinge mechanism 50 Below the dust cup 31 is used to open or close the dust discharge port. When the dust cup cover 32 closes the dust discharge port, the dust during the floor cleaning operation is collected inside the cup body mechanism 30; when the dust cup cover 32 opens the dust discharge port, the dust collected The dust can be discharged to the outside of the cup body mechanism 30 through the dust discharge port.

3 and 4, in this embodiment, the dust cup cover 32 is pivotally connected to the dust cup 31 through the hinge mechanism 50 around the axis t, and the hinge mechanism 50 specifically includes a The pivot shaft 51 on the dust cup cover 32 and the matching hole formed on the dust cup 31, the pivot shaft 51 is rotatably inserted into the matching hole, so that the dust cup cover 32 can be opened Or close the dust outlet. Of course, in alternate embodiments, the dust cup cover may also be pivotally connected to the bracket assembly by the hinge mechanism.

Wherein, when the pivot shaft 51 is matched with the matching hole, the two together define an axis t, and the axis t extends laterally.

Further, the locking mechanism is used to keep the dust cup cover 32 closed to the dust discharge port. In this embodiment, the locking mechanism and the hinge mechanism 50 are located on opposite sides of the dust cup assembly, so that the locking mechanism can be used to keep the dust cup cover 32 closed. The locking force of the dust discharge port is the largest, so as to ensure the sealing and relative stability between the dust cup cover 32 and the dust cup 31 .

In this embodiment, the hinge mechanism 50 is disposed on the front side of the cup body mechanism 30 and below the first bracket 21 , and the axis t extends in the left-right direction perpendicular to both the front-rear direction and the vertical direction. When the dust cup cover 32 is switched from closing the dust discharge port to opening the dust discharge port, the dust cup cover 32 rotates downward and forward around the axis t, that is, the dust cup cover 32 moves away from the The direction of the support portion 222 is rotated, so as to prevent the rotation angle of the dust cup cover 32 from being unable to be optimal due to the interference of the support portion 222, and to ensure more thorough and smooth dust discharge.

Correspondingly, the locking mechanism is disposed on the rear side of the cup body mechanism 30 and close to the second bracket 22 . In this way, it is convenient for the operator to operate, and at the same time, the aesthetic appearance of the vacuum cleaner 100 can be increased.

Further, referring to FIGS. 1 to 5 , the locking mechanism includes a first locking member 60 , a second locking member 80 and an unlocking member 70 .

One of the first locking member 60 and the second locking member 80 is disposed on the dust cup cover 32 , and one of the first locking member 60 and the second locking member 80 is The other is disposed on the dust cup 31 or the bracket assembly, and the first locking member 60 and the second locking member 80 can be engaged with or disengaged from each other. Wherein, when the first locking member 60 and the second locking member 80 are mated with each other, the dust cup cover 32 cannot rotate around the axis t and keeps closing the dust outlet; When the locking member 60 and the second locking member 80 are disengaged from each other, under the action of gravity, the dust cup cover 32 rotates around the axis t and opens the dust discharge port.

The unlocking member 70 is used for receiving the mechanical operation of the operator, and it is rotatably connected to the cup body mechanism 30 or the bracket assembly around the axis e. Specifically, the unlocking member 70 includes a pivot portion, which It is pivotally connected with the dust cup 31 or the bracket assembly through the pivot portion. In this embodiment, the unlocking member 70 is rotatably connected to the dust cup 31 , the pivot portion is set as an assembly hole 74 , and the dust cup 31 is provided with an assembly column matching the assembly hole 74 . 313 , the unlocking member 70 is sleeved on the assembling post 313 through the assembling hole 74 , so that the unlocking member 70 is rotatably connected to the dust cup 31 .

In the rotation path of the unlocking member 70 around the axis e, the unlocking member 70 has a non-operating position (shown in FIG. 2 ) and an unlocking position, that is, the unlocking member 70 can be in the non-operating position and the unlocked position. Wherein, when the unlocking member 70 is in the non-operating position, referring to FIG. 2 , the first locking member 60 and the second locking member 80 can be kept in engagement with each other, so that the dust cup cover 32 cannot rotate around the axis t and keeps closing the dust discharge port; when the unlocking member 70 receives the operator's mechanical operation and rotates from the non-operated position to the unlocking position, the unlocking member 70 drives the The first locking member 60 and the second locking member 80 are disengaged from each other, so that the dust cup cover 32 rotates around the axis t under the action of gravity and opens the dust discharge port. In this way, the locking mechanism of the vacuum cleaner 100 of the present embodiment is designed as a rotating lever type structure, which can ensure the sealing and relative stability between the dust cup cover 32 and the dust cup 31, and can achieve a The key is unlocked, that is, the operator can make the dust cup cover 32 automatically open the dust discharge port by operating the unlocking member 70 without too much force to complete the dust discharge work, which is convenient to operate and simple in structure.

Further, in this embodiment, the first locking member 60 is disposed on the dust cup cover 32, the second locking member 80 is disposed on the dust cup 31, and the first locking member The member 60 and the second locking member 80 can be snap-fitted to each other.

Specifically, one of the first locking member 60 and the second locking member 80 is configured as a hook and the other is configured as a locking wall. In this embodiment, the first locking member 60 is a hook disposed on the dust cup cover 32, and the hook includes a locking wall 64; the second locking member 80 is formed on the dust cup cover 32. The retaining wall on the side wall 310 of the dust cup 31, the locking wall 64 is matched with the retaining wall; when the dust cup cover 32 closes the dust discharge port, the hook is connected to the retaining wall. At the holding wall, the holding wall fits against the locking wall 64 and limits the hook, so as to limit the vertical downward movement of the hook, so that all The dust cup cover 32 keeps the dust discharge port closed.

The buckle includes a fixed end 61 and an elastic free end 62 . The fixed end 61 is fixedly connected to the dust cup cover 32; when the hook is engaged with the retaining wall, the elastic free end 62 can be elastically deformed under the push of the unlocking member 70 And the side wall 310 facing away from the dust cup 31 in the lateral first direction x is opened outward, so that the hook is separated from the retaining wall, and the limit of the retaining wall to the hook is limited. release, so that the dust cup cover 32 rotates around the axis t under the action of gravity and opens the dust discharge port.

In this embodiment, when the hook and the retaining wall are mated with each other, an unlocking space 9 is formed between the hook and the side wall 310 of the dust cup 31 . During the rotation from the non-operated position to the unlocking position, at least a part of the unlocking member 70 can extend into the unlocking space 9 and press against the elastic free end 62 of the hook outward. In order to make the elastic free end 62 open outward along the first transverse direction x away from the side wall 310 of the dust cup 31 .

Specifically, the elastic free end 62 includes the locking wall 64 and a guiding slope 63 located above the locking wall 64 , and a guiding slope 63 and the side wall 310 of the dust cup 31 are formed between the guiding slope 63 and the side wall 310 of the dust cup 31 . The unlocking space 9; the unlocking member 70 includes a main body 71 and an unlocking portion 73 protruding downward from the main body 71, the unlocking portion 73 and the first locking member 60 and/or the second locking member 73 The locking member 80 is matched and extends downward into the unlocking space 9 (ie, between the guiding slope 63 and the side wall 310 of the dust cup 31 ). When the unlocking member 70 is rotated from the non-operated position to the unlocking position, the unlocking portion 73 abuts against the guiding inclined surface 63 of the first locking member 60 to push the elastic free end 62 away from The side wall 310 of the dust cup 31 opens outward.

Preferably, the unlocking portion 73 is provided with a mating slope 731 matching the guide slope 63 . In this way, the stability during the mating process can be ensured, and the motion resistance and frictional noise can be reduced at the same time.

Further, the unlocking member 70 further includes an operating portion 72, and the operating portion 72 is configured to receive a mechanical operation by an operator, so as to move the unlocking member 70 to the unlocking position from the non-operating position. The operating portion 72 protrudes outward from the main body 71 and extends outward from the side wall 310 of the dust cup 31 so as to receive the mechanical operation of the operator. In this embodiment, the axis e extends laterally, and the mechanical operation is a pressing operation, that is, the operator can press the operating portion 72 downward, so that the unlocking member 70 can move toward the non-operated position around the axis e. turn down to the unlocked position.

Further, the distance from the operating portion 72 to the pivot portion is greater than the distance from the unlocking portion 73 to the pivot portion. In this embodiment, the ratio between the distance from the operating part 72 to the pivoting part and the distance from the unlocking part 73 to the pivoting part is greater than or equal to 2. The ratio of the distance of the pivot portion to the distance from the unlocking portion 73 to the pivot portion is between 3 and 5. In this way, the force used by the operator to perform the unlocking operation can be further reduced, so that the unlocking operation is more labor-saving and more convenient, and the layout is beautiful.

In addition, the dust cup assembly further includes a sealing ring 33, when the dust cup cover 32 closes the dust discharge port, the sealing ring 33 is located between the dust cup cover 32 and the dust cup 31 for To seal the gap between the dust cup cover 32 and the dust cup 31 .

Compared with the prior art, the vacuum cleaner 100 of this embodiment has the following beneficial effects: by optimizing the positional relationship between the hinge mechanism 50 and the locking mechanism, not only the aesthetics of the vacuum cleaner 100 is improved, but also the cleanliness of the dust cup cover 32 is guaranteed. The rotation angle makes the dust discharge more thorough and more convenient; by optimizing the structure of the locking mechanism, while ensuring the sealing and relative stability between the dust cup cover 32 and the dust cup 31, it can achieve One key to unlock, the operator can make the dust cup cover 32 automatically open the dust discharge port by operating the unlocking member 70 without too much effort, which makes the operation of dust discharge simpler and more labor-saving, and the structure is simple, firm and durable. beautiful.

It should be noted that the above embodiments provide a locking/unlocking mechanism installed between the dust cup and the dust cup cover installed on the upright vacuum cleaner, so as to solve the problem that the locking/unlocking mechanism of the dust cup cover is in the whole body. The problem of unsightly layout and inconvenient operation does not mean that the locking/unlocking mechanism can only be applied to upright vacuum cleaners. In other embodiments, the locking/unlocking mechanism can also be used in other cleaning tools. Such as hand-held vacuum cleaners. However, it should be noted that in the embodiment of the hand-held vacuum cleaner, the aforementioned bracket assembly can be understood as a supporting structure supporting or matching with the dust cup assembly, and other structures and matching relationships are the same as those in the above-mentioned embodiment. I won't go into details here.

It should be understood that although this specification is described in terms of embodiments, not every embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole, and each The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions for the feasible embodiments of the present invention, and they are not used to limit the protection scope of the present invention. Changes should all be included within the protection scope of the present invention.

Claims (12)

1. a kind of dust catcher, including bracket component and the dirt cup component being assembled on the bracket component, which is characterized in that institute Dirt cup component is stated to include dirt cup, the dust outlet below the dirt cup, linkwork, pass through the linkwork activity It is coupled to below the dirt cup with the dirt cup lid and locking mechanism for being opened and closed the dust outlet, the locking mechanism packet Include unlock piece, the first holding piece and the second holding piece, first holding piece and second holding piece can be coupled or disengage with So that the dirt cup lid is closed or opened the dust outlet accordingly, the unlock piece in non-operating position and unlocked position it Between be rotationally connected on the dirt cup or the bracket component；Wherein, when the unlock piece is rotated by the non-operating position When to the unlocked position, the unlock piece can drive first holding piece and second holding piece disconnected from each other.

2. dust catcher according to claim 1, which is characterized in that the bracket component includes first support and second Frame, the dirt cup component have lengthwise axial direction and with the axially vertical transverse direction, the first support is assembled in the dirt The lateral side of cup assembly simultaneously upwardly extends and its lower end is not less than the dirt cup component, and the second support includes being assembled in institute The branch for stating the second department of assembly of the lateral other side of dirt cup component and being connected to second department of assembly lower end and extending downwardly Support part；

The linkwork and the locking mechanism are located at the laterally opposed two sides of the dirt cup component, and when the dirt cup lid is opened When opening the dust outlet, the dirt cup lid is rotated by the linkwork to the direction far from the support portion.

3. dust catcher according to claim 2, which is characterized in that the first support includes upwardly extending and scalable setting The connecting rod set and the handle for being connected to the small end, the support portion of the second support, which extends downwardly, can connect at a ground Device is managed, the support portion and second department of assembly have the gas that can be connected to the dirt cup component and the floor-treating device Circulation road.

4. dust catcher according to claim 2, which is characterized in that the linkwork is set to the front side of the dirt cup simultaneously Positioned at the lower section of the first support；The locking mechanism is set to the rear side of the dirt cup and close to the second support.

5. dust catcher according to claim 1, which is characterized in that its of first holding piece and second holding piece One of be set to the dirt cup and cover, first holding piece and the wherein another of second holding piece are set to the dirt On cup or the bracket component；

First holding piece and second holding piece snapped into one another can be coupled.

6. dust catcher according to claim 5, which is characterized in that first holding piece is to be set to the dirt cup to cover Hook, second holding piece is the holding wall being formed in the dirt cup；When the dirt cup lid closes the dust discharge When mouth, the hook is coupled at the holding wall, and the holding wall limits the movement tendency of the hook straight down, with The dirt cup lid is set to remain turned-off the dust outlet.

7. dust catcher according to claim 6, which is characterized in that when the hook and the holding wall are coupled each other, A unlock space is formed between the hook and the dirt cup；

When the unlock piece is rotated from the non-operating position to the unlocked position, the unlock piece can at least partly prolong It protrudes into the unlock space and the hook is pushed gradually to disengage the holding wall.

8. dust catcher according to claim 7, which is characterized in that the hook includes elastic free end and is connected to described The fixing end that dirt cup covers, when the hook is coupled to the holding wall, under the promotion of the unlock piece, the elasticity is certainly Elastic deformation can be occurred by end and be flared out away from the dirt cup, so that the hook disengages the holding wall.

9. dust catcher according to claim 8, which is characterized in that the elastic free end includes matching with the holding wall The locking wall connect and the lead-in chamfered above the locking wall, between the lead-in chamfered and the dirt cup described in formation Unlock space；The unlock piece includes solution lock section, and the solution lock section has the cooperation inclined-plane to match with the lead-in chamfered, institute Solution lock section is stated to extend downward into the unlock space；When the unlock piece is turned from the non-operating position to the unlocked position When dynamic, the solution lock section supports the lead-in chamfered to push the elastic free end to be flared out away from the dirt cup.

10. dust catcher according to claim 1, which is characterized in that the unlock piece includes operation portion, the operation portion to Extend the side wall of the dirt cup and the pressing operation for receiving operator outside, so that the unlock piece is in the non-operative position It sets and is swung down to the unlocked position.

11. dust catcher according to claim 1, which is characterized in that the unlock piece includes and the dirt cup or the branch Pivot part that frame component is pivotally connected, the operation portion for receiving user's operation and with first holding piece and/or second lock The solution lock section of gripping member cooperation, the distance of the operation portion to pivot part ratio at a distance from the solution lock section to the pivot part Value is greater than or equal to 2.

12. dust catcher according to claim 11, which is characterized in that the distance of the operation portion to the pivot part and institute The distance ratio for stating solution lock section to the pivot part is 3 ~ 5.