CN217696259U

CN217696259U - Detachable cutter holder structure of food processor

Info

Publication number: CN217696259U
Application number: CN202221636277.XU
Authority: CN
Inventors: 蒋毅辉; 杜俊明
Original assignee: Shandong Baite Electrical Appliance Co ltd
Current assignee: Shandong Baite Electrical Appliance Co ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-11-01
Anticipated expiration: 2032-06-27

Abstract

The utility model discloses a removable blade holder structure of cooking machine, aim at overcoming the low problem of security among the prior art, it includes a cooking section of thick bamboo, the one end of a cooking section of thick bamboo can be dismantled and be provided with the bowl cover, the other end of a cooking section of thick bamboo can be dismantled and be provided with the blade holder, a cooking section of thick bamboo, bowl cover and blade holder enclose synthetic cooking region, rotatably be provided with the cooking sword that is located in the cooking region on the blade holder, it has the locking piece to articulate on the blade holder, if the locking piece rotates on the blade holder, the locking piece can connect or break away from a cooking section of thick bamboo, it is provided with the interlocking piece to slide on the blade holder, if the interlocking piece when sliding on the blade holder, the interlocking piece can obstruct or allow the locking piece to break away from a cooking section of thick bamboo.

Description

Detachable cutter holder structure of food processor

Technical Field

The utility model belongs to a cooking machine, in particular to a detachable cutter holder structure of a cooking machine.

Background

With the increasing living standard of people, many different types of food processors appear on the market. The functions of the food processor mainly include, but are not limited to, functions of making soybean milk, grinding, squeezing juice, making rice paste, mincing meat, shaving ice, making coffee and/or blending a mask and the like. The food processor can comprise a soybean milk machine, a stirrer or a wall breaking food processor and other machines for crushing and stirring food materials.

The Chinese utility model patent of the prior application number 201820963330.4 discloses a food processor, which comprises a cup body, a tool apron and a fixed frame, wherein the tool apron is arranged at the bottom of the cup body through the fixed frame; the stirring knife assembly comprises an induction heating seat corresponding to the electromagnetic induction coil and a blade assembly arranged on the induction heating seat; and fixed knot constructs, set up in blade holder or response seat of heating, the stirring knife tackle spare is installed in cup or blade holder or mount through fixed knot structure detachably to in the bottom of the sealed cup of installation back, when the cooking machine uses the back and needs to wash, press the button, can dismantle the stirring knife tackle spare, convenient operation, and wash thoroughly, so, the stirring knife tackle spare no longer has unable abluent dead angle, has effectively avoided breeding the bacterium, has produced the condition of peculiar smell.

However, the prior art is not perfect, pressing of the key is strictly prohibited when the food processor performs food processing, but manual misoperation can be easily eliminated, and the problem that the existing food processor has potential safety hazards is caused.

SUMMERY OF THE UTILITY MODEL

For overcoming the problems of the prior art, the utility model provides a detachable knife holder structure of a food processor.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a removable blade holder structure of cooking machine, including a cooking section of thick bamboo, the one end of a cooking section of thick bamboo can be dismantled and be provided with the bowl cover, the other end of a cooking section of thick bamboo can be dismantled and be provided with the blade holder, a cooking section of thick bamboo, bowl cover and blade holder enclose synthetic cooking region, rotatably be provided with the cooking sword that is located cooking region on the blade holder, it has the locking piece to articulate on the blade holder, if the locking piece rotates on the blade holder, the locking piece can be connected or break away from a cooking section of thick bamboo, it is provided with the interlocking piece to slide on the blade holder, if the interlocking piece slides on the blade holder when, the interlocking piece can obstruct or allow the locking piece to break away from a cooking section of thick bamboo.

Preferably, still include the linkage, the linkage transmission sets up between interlocking piece and bowl cover, and when the bowl cover was installed on cooking barrel, the bowl cover drove interlocking piece through the linkage and hinders the locking piece and break away from cooking barrel.

Preferably, the linkage piece slides and sets up on the cooking section of thick bamboo, if the linkage piece when sliding on the cooking section of thick bamboo, can drive and stop the piece and slide on the blade holder.

Preferably, the interlocking member comprises a first blocking wall, the locking member comprises a second blocking wall, the interlocking member is positioned on the rotation path of the second blocking wall if the interlocking member obstructs the locking member from disengaging from the food container, and the first blocking wall is positioned outside the rotation path of the second blocking wall if the interlocking member allows the locking member to disengage from the food container.

Preferably, the locking piece further comprises a third blocking wall, and the first blocking wall is positioned on a rotating path of the third blocking wall when the interlocking piece allows the locking piece to be separated from the cooking tube.

Preferably, the second blocking wall is a flat surface on the locking member, and the third blocking wall is a concave surface on the locking member.

As preferred, the locking piece includes first buckle, and the last fixed second buckle that is provided with of cooking section of thick bamboo if the locking piece rotates on the blade holder, but first buckle joint or break away from the second buckle.

Preferably, the knife holder is fixedly provided with a third buckle, the cooking tube is fixedly provided with a fourth buckle, and if the first buckle is clamped on the second buckle, the third buckle is clamped on the fourth buckle.

Preferably, the locking piece is arranged in the tool apron, a first through hole is formed in the tool apron, the locking piece comprises a button, and the button is exposed out of the tool apron through the first through hole.

Preferably, the tool apron is provided with a water drainage groove, the locking piece and the interlocking piece are arranged in the water drainage groove, and the bottom of the water drainage groove is provided with a water drainage hole.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

the utility model discloses in, with the bowl cover, arrange a cooking section of thick bamboo and blade holder split back, can be alone to the bowl cover, arrange a cooking section of thick bamboo and blade holder wash, if the locking piece is connected when arranging a cooking section of thick bamboo, the unable direct separation of a cooking section of thick bamboo and blade holder, the design of locking piece has improved the fastness of connection, and if the interlocking piece blocks when the locking piece breaks away from a cooking section of thick bamboo, unable direct unblock locking piece, avoid the not hard up separation even that the people results in arranging a cooking section of thick bamboo and blade holder of maloperation locking piece, the interlocking piece plays the effect that the lock was said to the second, consequently this removable blade holder structure of cooking machine has firm in connection, and is simple and convenient to operate, safe in utilization and abluent advantage of being convenient for.

Drawings

Fig. 1 is one of the schematic perspective views of embodiment 1 of the present invention;

fig. 2 is a second schematic perspective view of embodiment 1 of the present invention;

fig. 3 is one of the schematic cross-sectional structural diagrams of embodiment 1 of the present invention;

fig. 4 is a schematic view of the enlarged partial structure at the position "a" of the present invention;

fig. 5 is a second schematic sectional view of embodiment 1 of the present invention;

fig. 6 is a schematic view of the local enlarged structure at "B" of the present invention;

fig. 7 is an exploded view of embodiment 1 of the present invention;

fig. 8 is a schematic sectional view of a tool holder according to embodiment 1 of the present invention;

fig. 9 is a schematic perspective view of embodiment 2 of the present invention;

in the figure: 1-food processing cylinder, 2-cup cover, 3-knife holder, 4-locking piece, 5-interlocking piece, 6-linkage piece, 7-food processing knife, 8-food processing area, 91-first elastic piece, 92-second elastic piece, 93-third elastic piece, 94-first sealing ring, 95-second sealing ring, 96-electric heating tube, 97-motor, 11-second buckle, 12-fourth buckle, 13-third through hole, 31-slot, 32-drainage groove, 33-drainage hole, 34-first through hole, 35-second through hole, 36-installation groove, 41-first buckle, 42-third buckle, 43-second blocking wall, 44-third blocking wall, 45-button and 51-first blocking wall.

Detailed Description

To facilitate understanding of those skilled in the art, the present invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 9, a removable blade holder structure of cooking machine, including a cooking section of thick bamboo 1, the one end of a cooking section of thick bamboo 1 can be dismantled and be provided with bowl cover 2, and the other end of a cooking section of thick bamboo 1 can be dismantled and be provided with blade holder 3, and a cooking section of thick bamboo 1, bowl cover 2 and blade holder 3 enclose synthetic cooking region 8, rotatably are provided with cooking sword 7 on the blade holder 3, and cooking sword 7 sets up in cooking region 8.

The cooking area 8 refers to an area for cooking food materials. If bowl cover 2 and blade holder 3 install respectively when the both ends of a cooking section of thick bamboo 1, bowl cover 2 and blade holder 3 also block respectively at the both ends of a cooking section of thick bamboo 1 to make cooking regional 8 be an inclosed space, avoid cooking the material in the district to take place to leak.

In the in-service use, the user can demolish bowl cover 2 earlier, puts into cooking tube 1 with eating the material again, installs bowl cover 2 on cooking tube 1 again, and drive cooking sword 7 is rotatory, and cooking sword 7 can process eating the material in cooking region 8.

Specifically, but bowl cover 2 threaded connection is in the one end of cooking section of thick bamboo 1. The knife holder 3 is provided with a slot 31, and the other end of the cooking tube 1 is inserted into the slot 31. The knife holder can be provided with a motor 97, and the motor 97 is in transmission connection with the food processor and used for driving the food processing knife 7 to rotate.

The knife holder 3 is hinged with a locking piece 4, and if the locking piece 4 rotates on the knife holder 3, the locking piece 4 can be connected with or separated from the cooking tube 1. If locking piece 4 connects on cooking tube 1, locking piece 4 sets up cooking tube 1 and the fixed setting of blade holder 3 together to the firm in connection nature of cooking tube 1 and blade holder 3 has been improved. If the locking piece 4 breaks away from the cooking tube 1, the cooking tube 1 can be detached or mounted on the knife holder 3. The design of locking piece 4 has improved the firm in connection nature of cooking section of thick bamboo 1 and blade holder 3.

The knife holder 3 is provided with an interlocking member 5 in a sliding manner, and if the interlocking member 5 slides on the knife holder 3, the interlocking member 5 can obstruct or allow the locking member 4 to be disengaged from the cooking tube 1. If interlocking member 5 hinders locking piece 4 and breaks away from cooking section of thick bamboo 1, locking piece 4 of connection on cooking section of thick bamboo 1 can't rotate on blade holder 3, and then locking piece 4 can't break away from cooking section of thick bamboo 1, and interlocking member 5 plays the effect of "locking" to locking piece 4 this moment. If locking piece 4 allows locking piece 4 to break away from cooking barrel 1, the locking piece 4 of connection on cooking barrel 1 can rotate on blade holder 3, and then locking piece 4 can break away from cooking barrel 1 to be convenient for the dismouting of cooking barrel 1 on blade holder 3.

The utility model discloses in, with bowl cover 2, behind cooking tube 1 and the 3 splits of blade holder, can be alone to bowl cover 2, cooking tube 1 and blade holder 3 wash, if locking piece 4 connects when cooking tube 1, the unable direct separation of cooking tube 1 and blade holder 3, the design of locking piece 4 has improved the fastness of connection, and if interlocking 5 hinders locking piece 4 and breaks away from cooking tube 1, unable direct unblock locking piece 4, avoid the not hard up separation even that leads to cooking tube 1 and blade holder 3 of people maloperation locking piece 4, interlocking 5 plays the effect that the second was said and is locked, consequently this removable blade holder structure of cooking machine has firm in connection, and is easy and simple to handle, safe in utilization and abluent advantage of being convenient for.

Locking piece 4 includes first buckle 41, and the last fixed second buckle 11 that is provided with of cooking section of thick bamboo 1, if locking piece 4 rotates on blade holder 3, but first buckle 41 joint or break away from second buckle 11. If first buckle 41 joint when on second buckle 11 to realize locking piece 4 with the fixed setting of cooking barrel 1 and blade holder 3 together. If the first buckle 41 is separated from the second buckle 11, the cooking tube 1 can be detached or mounted on the knife holder 3.

The fixed third buckle 42 that is provided with on blade holder 3, the fixed fourth buckle 12 that is provided with on cooking barrel 1, if first buckle 41 joint when on second buckle 11, third buckle 42 joint has played the effect of dual fastening on fourth buckle 12, has further improved the firm in connection nature of blade holder 3 and cooking barrel 1.

Specifically, if the food tube 1 is inserted into the slot 31, the first latch 41, the second latch 11, the third latch 42 and the fourth latch 12 are disposed in the slot 31.

Specifically, first buckle 41 and third buckle 42 symmetry set up on blade holder 3, and second buckle 11 and fourth buckle 12 symmetry set up on cooking section of thick bamboo 1, and second buckle 11 and fourth buckle 12 set up respectively in cooking section of thick bamboo 1's both sides to the firm in connection nature of blade holder 3 and cooking section of thick bamboo 1 has further been improved.

The interlocking member 5 comprises a first blocking wall 51, the locking member 4 comprises a second blocking wall 43, if the interlocking member 5 obstructs the locking member 4 from disengaging from the food processing tube 1, the first blocking wall 51 is located on the rotation path of the second blocking wall 43, the first blocking wall 51 limits the rotation stroke of the second blocking wall 43 on the locking member 4 on the knife holder 3, the rotation stroke of the locking member 4 on the knife holder 3 is small or not, and the first catch 41 is further obstructed from disengaging from the second catch 11. If the interlocking member 5 allows the locking member 4 to disengage from the food processing tube 1, the first blocking wall 51 is located outside the rotation path of the second blocking wall 43, the first blocking wall 51 does not limit the rotation stroke of the second blocking wall 43 on the locking member 4 on the knife holder 3, the locking member 4 can rotate on the knife holder 3 to a certain extent, and the first buckle 41 can be buckled or disengaged with the second buckle 11.

The locking member 4 further comprises a third blocking wall 44, and if the locking member 5 allows the locking member 4 to be separated from the food processing tube 1, the first blocking wall 51 is located on the rotation path of the third blocking wall 44, so as to avoid the problem that the locking member 4 has too large rotation stroke on the knife holder 3 to cause dislocation or even clamping injury. The rotational travel of the locking member 4 on the holder 3 if the first blocking wall 51 is located on the rotational path of the second blocking wall 43 is smaller than the rotational travel of the locking member 4 on the holder 3 if the first blocking wall 51 is located on the rotational path of the third blocking wall 44.

Specifically, the second blocking wall 43 is a flat surface on the locking member 4, the third blocking wall 44 is a concave surface on the locking member 4, and the concave direction of the third blocking wall 44 is toward the direction away from the first blocking wall 51. The first catch 41, the third blocking wall 44 and the second blocking wall 43 are arranged in this order on the locking element 4.

The locking member 4 further comprises a button 45, and in use, the user can press the button 45 to rotate the locking member 4 on the holder 3. The blade holder 3 is hollow, the button 45 is rotatably disposed in the blade holder 3, the blade holder 3 is provided with a first through hole 34, the button 45 is exposed outside the blade holder 3 through the first through hole 34, and a user can press the button 45 outside the blade holder 3.

As shown, in embodiment 1, the button 45 is a concave arc-shaped surface on the locking member 4, and the button 45 is contoured to fit the outer contour of the user's finger, so that the user can press the button 45. As shown in the drawing, in embodiment 2, the structure is the same as that of embodiment 1 except for the push button 45, the push button 45 has a plate-like structure, the push button 45 extends out of the first through hole 34, and a user can hold the push button 45 by hand and move the push button 45.

The interlocking piece 5 is arranged in the tool apron 3, a second through hole 35 is further formed in the tool apron 3, the interlocking piece 5 comprises a push rod, the second through hole 35 is located on a sliding path of the push rod, and if the interlocking piece 5 slides on the tool apron 3, the connecting rod can extend out of the tool apron 3 or retract into the tool apron 3 through the second through hole 35.

This removable blade holder structure of cooking machine includes linkage 6, and 6 transmissions of linkage set up between interlocking 5 and bowl cover 2, and when bowl cover 2 was installed on cooking barrel 1, bowl cover 2 drove interlocking 5 through linkage 6 and blockked that locking piece 4 breaks away from cooking barrel 1. If the cup cover 2 separates from the food cylinder 1, the interlocking piece 5 can allow the locking piece 4 to be separated from the food cylinder 1.

The utility model discloses in, eat when cooking in cooking region 8, install respectively on cooking tube 1 bowl cover 2 and blade holder 3, bowl cover 2 and locking piece 4 play the effect of interlocking, cooking tube 1 takes place not hard up the problem of separation even with blade holder 3 when avoiding the material is eaten to the removable blade holder structure cooking of this cooking machine, and avoid the unblock that leads to locking piece 4 for the manual maloperation, and after bowl cover 2 separates from cooking tube 1, interlocking piece 5 unblock locking piece 4, the user can drive 4 unblocks of locking piece, thereby realize the separation of cooking tube 1 and blade holder 3, thereby realize locking piece 4 and bowl cover 2's interlocking, the safety in utilization and the easy and simple to handle nature of this removable blade holder structure of cooking machine have further been improved.

Linkage 6 sets up in cooking section of thick bamboo 1, has seted up third through-hole 13 on the cooking section of thick bamboo 1, and linkage 6 slidable ground sets up in third through-hole 13, if linkage 6 slides in third through-hole 13, and the one end of the one end accessible third through-hole 13 of linkage 6 stretches out outside cooking section of thick bamboo 1 or the shrink is in cooking section of thick bamboo 1, and the other end of the other end accessible third through-hole 13 of linkage 6 stretches out outside cooking section of thick bamboo 1 or the shrink is in cooking section of thick bamboo 1. The second through hole 35 is towards the other end of third through hole 13, and if the bowl cover 2 was installed on cooking section of thick bamboo 1, bowl cover 2 set up the one end at third through hole 13 to drive linkage 6 and slide in third through hole 13, linkage 6 can press on the ejector pin, thereby drive interlocking 5 and slide on blade holder 3.

This removable blade holder structure of cooking machine still includes first elastic component 91, and first elastic component 91 is used for forcing locking piece 4 to connect on cooking barrel 1 to the firm in connection nature of first buckle 41 and second buckle 11 has been improved. The first elastic member 91 is a coil spring, the first elastic member 91 is disposed in the holder 3, one end of the first elastic member 91 abuts against the locking member 4, and the other end of the first elastic member 91 abuts against the holder 3.

This removable blade holder structure of cooking machine still includes second elastic component 92, and second elastic component 92 is used for forcing interlocking piece 5 to allow locking piece 4 to break away from cooking barrel 1 to interlocking piece 5 is automatic to be relieved the locking to locking piece 4 under the effect of second elastic component 92 after bowl cover 2 and cooking barrel 1 separate. The second elastic member 92 is also a coil spring, the second elastic member 92 is disposed in the tool apron 3, the second elastic member 92 is sleeved on the interlocking member 5, one end of the second elastic member 92 abuts against the interlocking member 5, and the other end of the second elastic member 92 abuts against the tool apron 3.

This removable blade holder structure of cooking machine still includes third elastic component 93, and third elastic component 93 is used for forcing linkage 6 to keep away from interlocking 5 to avoid linkage 6 to hinder interlocking 5 to slide on blade holder 3 after bowl cover 2 and cooking section of thick bamboo 1 separate. The third elastic member 93 is also a coil spring, the third elastic member 93 is disposed in the food processing tube 1, the third elastic member 93 is sleeved on the linkage member 6, one end of the third elastic member 93 abuts against the food processing tube 1, and the other end of the third elastic member 93 abuts against the linkage member 6.

This removable blade holder structure of cooking machine still includes first sealing washer 94, and first sealing washer 94 sets up the bottom in slot 31, and the tip of cooking tube 1 compresses tightly on first sealing washer 94, and first sealing washer 94 is used for improving the leakproofness that cooking tube 1 and blade holder 3 are connected.

This removable blade holder structure of cooking machine still includes second sealing washer 95, and second sealing washer 95 cover is established on cooking section of thick bamboo 1, and second sealing washer 95 sets up between the lateral wall of the inside wall of slot 31 and cooking section of thick bamboo 1, and second sealing washer 95 also is used for improving the leakproofness that cooking section of thick bamboo 1 and blade holder 3 are connected.

This removable blade holder structure of cooking machine still includes electrothermal tube 96, and electrothermal tube 96 is used for heating cooking region 8. The electric heating tube 96 is disposed on the knife holder 3, the knife holder 3 is opened with a placement groove 36, and the electric heating tube 96 is disposed in the placement groove 36. The electric heating tube 96 is arc-shaped in overall structure, the accommodating groove 36 is also arc-shaped in overall structure, and the electric heating tube 96 is adapted in the accommodating groove 36.

A water drainage groove 32 is formed in the tool apron 3, the water drainage groove 32 is located in the inserting groove 31, the locking piece 4 and the interlocking piece 5 are arranged in the water drainage groove 32, the electric heating tube 96 and the motor 97 are arranged outside the water drainage groove 32, the water retaining groove prevents water from flowing onto the electric heating tube 96, and the working reliability of the tool apron dismounting structure is improved.

The tool apron 3 is provided with a drain hole 33, the drain hole 33 is positioned at the bottom of the drain tank 32, and water in the drain tank 32 can be drained outwards through the drain hole 33.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a removable blade holder structure of cooking machine, a serial communication port, including cooking barrel (1), the one end of cooking barrel (1) can be dismantled and be provided with bowl cover (2), the other end of cooking barrel (1) can be dismantled and be provided with blade holder (3), cooking barrel (1), synthetic regional (8) are enclosed in bowl cover (2) and blade holder (3), rotatably be provided with cooking sword (7) that are located cooking region (8) on blade holder (3), it has locking piece (4) to articulate on blade holder (3), if locking piece (4) when rotating on blade holder (3), locking piece (4) can be connected or break away from cooking barrel (1), it is provided with interlocking piece (5) to slide on blade holder (3), if interlocking piece (5) when sliding on blade holder (3), interlocking piece (5) can hinder or allow locking piece (4) to break away from cooking barrel (1).

2. The detachable cutter holder structure of the food processor according to claim 1, further comprising a linkage member (6), wherein the linkage member (6) is arranged between the interlocking member (5) and the cup cover (2) in a transmission manner, and when the cup cover (2) is mounted on the food processing cylinder (1), the cup cover (2) drives the interlocking member (5) to block the locking member (4) from being detached from the food processing cylinder (1) through the linkage member (6).

3. The detachable knife holder structure of food processor as claimed in claim 2, wherein the linkage member (6) is slidably disposed on the food processing cylinder (1), and if the linkage member (6) slides on the food processing cylinder (1), the blocking member is driven to slide on the knife holder (3).

4. The detachable knife holder structure of food processor according to claim 1, wherein the interlocking member (5) comprises a first blocking wall (51), the locking member (4) comprises a second blocking wall (43), if the interlocking member (5) blocks the locking member (4) from being separated from the food processing tube (1), the interlocking member (5) is located on the rotation path of the second blocking wall (43), and if the interlocking member (5) allows the locking member (4) to be separated from the food processing tube (1), the first blocking wall (51) is located outside the rotation path of the second blocking wall (43).

5. The detachable knife holder structure of food processor as claimed in claim 4, wherein the locking piece (4) further comprises a third blocking wall (44), and the first blocking wall (51) is located on the rotation path of the third blocking wall (44) if the interlocking piece (5) allows the locking piece (4) to be disengaged from the food processing tube (1).

6. The removable holder structure of claim 5, wherein the second wall (43) is a flat surface of the locking member (4), and the third wall (44) is a concave surface of the locking member (4).

7. The detachable knife holder structure of food processor according to claim 1, wherein the locking member (4) comprises a first buckle (41), a second buckle (11) is fixedly disposed on the food processing tube (1), and if the locking member (4) rotates on the knife holder (3), the first buckle (41) can be engaged with or disengaged from the second buckle (11).

8. The detachable knife holder structure of food processor according to claim 6, wherein the knife holder (3) is fixedly provided with a third buckle (42), the food processing tube (1) is fixedly provided with a fourth buckle (12), and if the first buckle (41) is buckled on the second buckle (11), the third buckle (42) is buckled on the fourth buckle (12).

9. The detachable knife holder structure of food processor according to claim 1, wherein the locking member (4) is disposed in the knife holder (3), a first through hole (34) is formed in the knife holder (3), the locking member (4) comprises a button (45), and the button (45) is exposed out of the knife holder (3) through the first through hole (34).

10. The detachable knife holder structure of food processor according to claim 1, wherein the knife holder (3) is provided with a water drainage groove (32), the locking member (4) and the interlocking member (5) are arranged in the water drainage groove (32), and the bottom of the water drainage groove (32) is provided with a water drainage hole (33).