CN219846430U - Supporting leg adjusting structure for kitchen electrical appliance and cleaning machine - Google Patents

Abstract

The utility model relates to a supporting leg adjusting structure for kitchen appliances and a cleaning machine, wherein the supporting leg adjusting structure comprises: a first leg having a vertically extending screw portion; the operating rod is arranged on the base in a manner of being capable of rotating and adjusting around the axis of the operating rod; the power transmission assembly transmits power between the operating rod and the screw rod part of the first support leg, so that the rotating motion of the operating rod is converted into the up-and-down movement of the first support leg; the power transmission assembly comprises a first bevel gear and a second bevel gear which are meshed with each other, the first bevel gear is connected with the connecting end of the operating rod and driven to rotate by the operating rod, the second bevel gear is rotationally sleeved on the screw rod part of the first supporting leg and limited by the base to move in the axial direction of the screw rod part, and the second bevel gear is in threaded connection with the screw rod part of the first supporting leg. Because the bevel gear transmission can select a relatively smaller dynamic ratio, the bevel gear transmission is more suitable for being adjusted through a rotating operating rod, the aim of quickly adjusting the height can be achieved, and the bevel gear transmission is more convenient and quick for a user to operate.

Description

Supporting leg adjusting structure for kitchen electrical appliance and cleaning machine

Technical Field

The utility model relates to the technical field of kitchen appliances, in particular to a supporting leg adjusting structure for a kitchen appliance and a cleaning machine.

Background

For reasonable utilization of kitchen space and aesthetic considerations, most kitchen appliances such as washers, sterilizer, steam ovens, etc. now employ embedded mounting. Taking embedded cleaning machine as an example, the stabilizer blade of machine bottom adopts the structure of height-adjustable more, can rotate the adjustment mechanism in front of the machine under the cabinet condition has been put into to the machine to the stabilizer blade height of machine is adjusted to conveniently get in the cupboard and put.

Chinese patent application No. CN202120937134.1 (grant bulletin No. CN 215016971U) discloses an embedded adjustable mechanism of dish washer, which comprises a main body and an adjusting component; the adjusting assembly comprises an adjusting knob, an adjusting rod, an adjusting worm wheel and a lifting rod; the adjusting knob is arranged on the main body; one end of the adjusting rod is connected with an adjusting knob; the adjusting worm is rotatably arranged in the fixed box of the main body and is connected with the other end of the adjusting rod; the adjusting worm wheel is rotatably arranged in the fixed box and meshed with the adjusting worm; the lifter passes through the adjusting worm wheel, and the external thread of the lifter is matched with the internal thread of the adjusting worm wheel. The embedded adjustable mechanism of the dish washer can realize lifting adjustment of the lifting rod by rotating the adjusting knob, so that the height adjustment of the bottom feet which are connected with the lifting rod and cannot be directly contacted with the rear end of the dish washer by hands is realized, the operation is simple, and the adjustment is convenient.

However, the embedded adjustable mechanism of the dish washer in the above patent application has a certain defect, firstly, the worm gear is adopted between the adjusting rod and the lifting rod for transmission, and then the rotation motion of the adjusting rod is converted into the up-and-down movement of the lifting rod through the threaded fit between the worm gear and the lifting rod, and the transmission speed is low due to the limitation of the self transmission characteristics of the worm gear, so that the user can not meet the requirement of quick adjustment because of relatively complicated adjustment process when carrying out the height adjustment. Secondly, adopting worm gear transmission structure, its assembly process also becomes comparatively loaded down with trivial details, and it needs to place worm gear part together in the mounting groove of fixed box earlier, again assembles together with the inside mounting box of main part through fixed box (and worm gear part on the assembly), because assembly process loaded down with trivial details, causes manufacturing cost to increase.

Disclosure of Invention

The first technical problem to be solved by the utility model is to provide a supporting leg adjusting structure for kitchen appliances, which is relatively simple in adjusting process and can achieve the purpose of rapid adjustment, aiming at the current state of the art.

The second technical problem to be solved by the utility model is to provide a cleaning machine which is relatively simple in adjusting process and can achieve the purpose of rapid adjustment aiming at the current state of the art.

The third technical problem to be solved by the utility model is to provide a cleaning machine with simple assembly process and convenient disassembly of the supporting leg adjusting component aiming at the current state of the art.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: a kitchen appliance supporting leg adjusting structure for being installed on a base of a kitchen appliance, comprising:

the first support leg is arranged on the base in a mode of being capable of moving up and down relative to the base of the kitchen appliance and is provided with a screw rod part extending vertically;

the operating rod is arranged on the base in a manner of being capable of rotating and adjusting around the axis of the operating rod, and two ends of the operating rod in the length direction are an operating end and a connecting end which are used for operation of a user respectively;

the power transmission assembly is arranged on the base and transmits power between the operating rod and the screw rod part of the first support leg, so that the rotating motion of the operating rod is converted into the up-and-down motion of the first support leg;

the power transmission assembly comprises a first bevel gear and a second bevel gear which are meshed with each other, the first bevel gear is connected with the connecting end of the operating rod and driven to rotate by the operating rod, the second bevel gear is rotationally sleeved on the screw rod portion of the first supporting leg and limited by the base to move in the axial direction of the screw rod portion, and the second bevel gear is in threaded connection with the screw rod portion of the first supporting leg.

The base of the kitchen appliance can be a bottom part on the integrally designed appliance main body, or can be an independent split component connected to the bottom part of the appliance main body.

In order to realize the assembly of the first bevel gear and the operating rod, the first bevel gear is provided with a connecting hole for inserting the connecting end of the operating rod therein.

In order to facilitate the forward and backward rotation of the operation lever operated by a user, the operation lever basically extends horizontally, the operation end of the operation lever is provided with a rotary cap, and the rotary cap is provided with an adjusting groove. The user can drive the rotary cap (i.e. the operating rod) to rotate by clamping a straight or cross screwdriver tool into the adjusting groove of the rotary cap.

In order to limit the rotation of the first support leg, the first support leg is only allowed to move up and down relative to the second bevel gear under the drive of the second bevel gear, and the cross section of the screw part of the first support leg is non-circular.

In order to achieve a secure fit of the first bevel gear and the second bevel gear and for ease of installation, the first bevel gear is located below the second bevel gear.

The utility model solves the second technical problem by adopting the technical proposal that: the utility model provides a cleaning machine, includes the base and locates the supporting legs adjustment structure on the base, supporting legs adjustment structure be foretell for kitchen appliance supporting legs adjustment structure.

The technical scheme adopted by the utility model for solving the third technical problem is as follows: the base is provided with a support leg installation channel which extends vertically and is used for the screw rod part of the first support leg to be installed in from bottom to top, the base is also provided with a first installation channel which extends vertically and is used for the first bevel gear to be installed in, and a second installation channel which extends horizontally and is used for the second bevel gear to be installed in, and the first installation channel and the support leg installation channel are communicated with the second installation channel.

In one case, the first bevel gear may be installed in the first installation channel from top to bottom, or may be installed in the first installation channel from bottom to top, and similarly, the second bevel gear may be installed in the second installation channel from back to front (or from front to back), or may be installed in the second installation channel in a horizontal extending direction other than the front-back direction, preferably, in order to further simplify the assembly process of the two bevel gears, the lower part of the first installation channel forms a first installation opening for installing the first bevel gear therein from bottom to top, the second installation channel extends from front to back, and forms a second installation opening for installing the second bevel gear therein at the rear side.

When the assembly is carried out, the second bevel gear can be firstly arranged in the second mounting hole from the rear side, then the first supporting leg is inserted into the supporting leg mounting hole from bottom to top, meanwhile, the screw rod part is connected into the second bevel gear which is arranged in place in the second mounting hole, then the first bevel gear is arranged in the first mounting hole from bottom to top and meshed with the second bevel gear, and meanwhile, the connecting end of the operating rod can be inserted into the first bevel gear to form a support for the first bevel gear, so that the assembly is completed. The assembly can be completed outside the base, so that the assembly is convenient and easy to operate, and on the other hand, the base is not required to be split into a plurality of independent split parts to meet the installation requirement of the supporting leg adjusting structure, namely, the base can be designed in an integrated manner, the processing cost is further reduced, and the assembly process is simplified.

In order to avoid displacement slipping and operating rod slipping of a first bevel gear in the two bevel gear transmission processes, or the problem that the first bevel gear is separated from an installation position, a through hole for the connecting end of the operating rod to penetrate into is formed in the front side wall of the first installation channel at a position corresponding to the operating rod, a first step part for propping against the outer peripheral wall of the gear shaft of the first bevel gear is formed in the front side wall of the first installation channel, which is located above the through hole, in a protruding mode towards the inside of the first installation channel, and the end part of the gear shaft of the first bevel gear is propped against the peripheral edge of the through hole.

By the structural design, the upper part of the gear shaft of the first bevel gear can be pressed by the first step part, and meanwhile, an operating rod connected with the gear shaft of the first bevel gear can be stressed downwards after being placed on the through hole, so that the stability of the first bevel gear in the rotation process is ensured; on the other hand, the first step part can limit the first bevel gear in the axial direction, so that the slipping problem caused by the axial displacement of the first bevel gear is avoided, and the first step part is positioned at the upper part of the first installation channel, so that interference is not formed in the installation process of the first bevel gear from bottom to top, namely, the installation clearance requirement of the first bevel gear is met.

In order to further simplify the structure of the base, the peripheral edge of the through hole comprises a first blocking part positioned at the upper part and a second blocking part positioned at the lower part, wherein the first blocking part and the second blocking part are arranged in a staggered manner in the vertical direction, and the second blocking part is closer to the operating end of the operating rod.

In order to ensure stable rotation of the second bevel gear in the second mounting channel and reduce the shaking problem, a second step part for propping against the outer peripheral wall of the gear shaft of the second bevel gear is formed on the upper side wall of the second mounting channel in a protruding way towards the inside of the second mounting channel at the part communicated with the first mounting channel.

For the convenience to install the action bars and satisfy material reduction cost's needs, the base includes relative first supporting part and second supporting part in fore-and-aft direction, first supporting part is located the front side of base, first supporting part and second supporting part are vertical setting, and extend in the left and right directions, supporting leg adjusts first stabilizer blade and the power transmission subassembly of structure and is located on the second supporting part, supporting leg adjusts the action bars of structure and extends along the fore-and-aft direction, and the operation end of this action bars is connected on the first supporting part, the link of action bars is connected on the second supporting part.

In order to simplify the installation process of the rotary cap, the rotary cap is installed at the operation end of the operation rod, a first installation hole for installing the rotary cap therein is formed in the first support part, the first installation hole is provided with a limit blocking edge extending inwards in the radial direction, and the rotary cap is provided with an elastic buckle capable of being abutted against the inner side of the limit blocking edge in the state of being inserted into the first installation hole and a limit blocking part formed in the radial direction in an outward extending mode so as to be abutted against the outer side of the limit blocking edge.

In order to simplify the height adjusting process of the whole cleaning machine, the first supporting legs of the supporting leg adjusting structure and the power transmission component are positioned in the center of the rear side of the bottom of the base, and the front side of the bottom of the base is also provided with second supporting legs which are arranged at intervals left and right.

The first supporting leg of the supporting leg adjusting structure and the left and right second supporting legs at the front part form a three-point adjusting structure at the bottom of the base, so that the supporting leg adjusting structure is more convenient to adjust and easy to operate, and the stability of the whole machine is ensured.

Compared with the prior art, the utility model has the advantages that: the power transmission assembly of the supporting leg adjusting structure adopts a bevel gear transmission matched transmission structure, and the bevel gear transmission can select a relatively smaller dynamic ratio, so that the power transmission assembly is more suitable for being adjusted through a rotating operating rod, the purpose of quickly adjusting the height can be achieved, and the power transmission assembly is more convenient and quick for a user to operate. In the preferred scheme, two bevel gear pieces matched with the bevel gear transmission can be directly installed in corresponding installation channels, and are matched with the corresponding operation rod and the screw rod part of the first support leg to realize quick installation, so that the assembly process is simplified, and the production cost is reduced.

Drawings

FIG. 1 is a schematic perspective view of a cleaning machine according to an embodiment of the present utility model;

FIG. 2 is a bottom view of a washer according to an embodiment of the present utility model;

FIG. 3 is a schematic perspective view of a base of a cleaning machine according to an embodiment of the present utility model equipped with a supporting leg adjusting structure;

FIG. 4 is a vertical cross-sectional perspective view of the base of FIG. 3 taken along the axial direction of the adjustment rod;

FIG. 5 is an exploded view of FIG. 3;

FIG. 6 is a vertical cross-sectional view of the base of FIG. 3 taken along the axial direction of the adjustment rod;

fig. 7 is a vertical sectional view taken in the front-rear direction at the second supporting portion of the base of the embodiment of the present utility model;

fig. 8 is a schematic perspective view of a rotary cap according to an embodiment of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

Referring to fig. 1 to 8, there is shown a kitchen appliance having a supporting leg adjusting structure, wherein the kitchen appliance may be a washer, a sterilizer, a steaming oven, etc. which may be used for a product to be inserted into a cabinet space, and the present embodiment is illustrated by taking the washer as an example.

Referring to fig. 1, the washing machine includes an electric appliance main body 5 and a base 50 coupled to the bottom of the electric appliance main body 5. The base 50 of the present embodiment is a square enclosure frame structure, which includes a first supporting portion 51 and a second supporting portion 52 that are disposed in front-back opposition, wherein the first supporting portion 51 is located at the front side, and the second supporting portion 52 is located at the rear side. The first support portion 51 and the second support portion 52 are each a plate-like structure that is vertically arranged and extends in the left-right direction.

Referring to fig. 2, the left and right side areas of the bottom of the first supporting portion 51 of the base 50 of the present embodiment are provided with second legs 53, wherein both the second legs 53 may have a leg structure with a screw, and since both the second legs 53 are located at the front of the machine, a user can conveniently and directly rotate the second legs 53 to achieve the height adjustment at the front of the machine.

Referring to fig. 3 to 6, the base 50 of the present embodiment is further provided with a supporting leg adjusting structure, and in particular, the supporting leg adjusting structure includes a first leg 10, a bevel gear transmission assembly (i.e., a power transmission assembly), an operating lever 20, and a rotating cap 30. The first leg 10 and the bevel gear assembly are disposed on a second supporting portion 52 at the rear side of the base 50, the operating lever 20 extends horizontally along the front-rear direction, the front end thereof is an operating end 21 correspondingly connected to the first supporting portion 51, and the rear end thereof is a connecting end 22 correspondingly connected to the second supporting portion 52. The first supporting portion 51 of the base 50 is provided with a first mounting hole 510 penetrating from front to back, wherein the inner peripheral wall of the first mounting hole 510 is provided with a limiting blocking edge 511 extending inward in a radial direction, and the limiting blocking edge 511 is located at the rear end position of the first mounting hole 510 (i.e. located at the middle area position of the first mounting hole 510 close to the base 50).

Referring to fig. 8, the spin cap 30 is generally rod-shaped and rotatably installed in the first installation hole 510 of the base 50. The rear end of the rotary cap 30 may be used to connect with the front end of the operating rod 20, and an adjusting groove 33 is formed on the end wall of the front end of the rotary cap 30, as shown in fig. 8, the adjusting groove 33 is a cross groove, and a user may insert a straight or cross screwdriver tool into the adjusting groove 33 of the rotary cap 30 to rotate the rotary cap 30 (i.e., the operating rod 20). The rotating cap 30 is further provided with an elastic buckle 31 and a limiting stop portion 32 along the axial direction thereof in sequence, wherein the limiting stop portion 32 is an annular convex edge structure formed by extending the outer peripheral wall of the main body 5 of the rotating cap 30 radially outwards, and the limiting stop portion 32 is located at the front side of the elastic buckle 31. The limiting buckle is of an elastic arm structure which gradually inclines outwards from back to front on the peripheral wall of the main body 5 of the self-rotating cap 30, and the limiting buckle is provided with two symmetrical structures. A certain gap is formed between the limit catch and the limit stop portion 32 of the rotary cap 30, so that after the rotary cap 30 is installed into the first installation hole 510 from front to back, the limit stop edge 511 at the first installation hole 510 is just snapped into the above gap, that is, in the state that the rotary cap 30 is inserted into the first installation hole 510, the front end of the elastic catch 31 of the rotary cap 30 abuts against the inner side of the limit stop edge 511, and the limit stop portion 32 abuts against the outer side of the limit stop edge 511, thereby realizing the limit of the rotary cap 30 in the axial direction of the first installation hole 510 and guaranteeing the installation firmness.

In a preferred embodiment, a rolling bearing (not shown) may also be provided between the main body 5 of the spin cap 30 and the inner wall of the first mounting hole 510, thereby reducing friction therebetween and enabling flexible rotation of the spin cap 30 relative to the base 50.

As shown in fig. 6, the front end of the spin cover 30 is mostly received in the first mounting hole 510, and only the front end wall thereof (i.e., the position of the adjustment groove 33) is exposed, thereby preventing foreign objects from touching the spin cover 30 and damaging the spin cover 30.

The bevel gear assembly is mounted on a second support 52 of the base 50. Specifically, the bevel gear transmission assembly includes a first bevel gear 41 and a second bevel gear 42, wherein an axial direction of the first bevel gear 41 extends forward and backward, and an axial direction of the second bevel gear 42 extends vertically. A connection hole 411 into which the rear end of the operating rod 20 is inserted is opened in the middle of the gear shaft of the first bevel gear 41, and the cross section of the connection hole 411 is hexagonal, and correspondingly, the cross section of the operating rod 20 is also hexagonal.

The first leg 10 includes a support foot pad 12 and a screw portion 11 connected to the support foot pad 12. The second bevel gear 42 is sleeved on the screw rod part 11 of the first support leg 10, wherein an inner thread 420 for being in threaded connection with the screw rod part 11 is arranged on the peripheral wall of the inner hole of the second bevel gear 42.

The first supporting portion 51 of the base 50 is provided with a vertically extending leg mounting channel 61, a first mounting channel 62 and a second mounting channel 63. The cross section of the screw portion 11 of the first leg 10 is non-circular, specifically may be flat, and correspondingly, the cross section of the leg mounting hole 61 on the first support portion 51 is also flat. After the screw portion 11 of the first leg 10 is inserted into the leg mounting hole 61, it is only movable up and down, and is not rotatable about its own axis.

The bottom of the leg mounting hole 61 is opened, and the screw portion 11 of the first leg 10 can be inserted into the leg mounting hole 61 from bottom to top.

The first mounting channel 62 of the first supporting portion 51 of the base 50 also extends vertically, and a first mounting opening 620 is formed at the bottom. The first bevel gear 41 may be fitted into the first mounting channel 62 from bottom to top through the first mounting port 620. A front side wall of the first mounting passage 62 is provided with a through hole 520 penetrating in the front-rear direction at a position corresponding to the operation lever 20, wherein the connection end 22 of the operation lever 20 is inserted from the front to the rear through the through hole 520 into the connection hole 411 of the gear shaft of the first bevel gear 41. In the present embodiment, the first mounting passage 62 is substantially identical in size in the front-rear direction to the gears in the axial direction of the first bevel gear 41, but in order to avoid displacement slip problems of the first bevel gear 41 during rotation or escape of the first bevel gear 41 from the mounting position, the front side wall of the first mounting passage 62 is formed with a first stepped portion 621 protruding toward the inside (i.e., rearward) of the first mounting passage 62 corresponding to the portion located above the through hole 520, which first stepped portion 621 is available to abut against the outer peripheral wall of the gear shaft of the first bevel gear 41, while the front end portion of the gear shaft of the first bevel gear 41 abuts against the peripheral edge of the through hole 520. In further detail, in the present embodiment, the peripheral edge of the through hole 520 includes a first blocking portion 521 (i.e., an upper half turn) located at an upper portion and a second blocking portion 522 (i.e., a lower half turn) located at a lower portion, where the first blocking portion 521 and the second blocking portion 522 are arranged in a staggered manner in the up-down direction, and the second blocking portion 522 is closer to the operating end 21 of the operating lever 20.

The through hole 520 of the first mounting channel 62 is designed in such a way that the upper part of the gear shaft of the first bevel gear 41 can be pressed by the first step 621, and the operating rod 20 connected with the gear shaft of the first bevel gear 41 can be stressed downwards after being placed on the through hole 520, so that the stability of the first bevel gear 41 in the rotation process is ensured; on the other hand, the first step 621 limits the first bevel gear 41 in the axial direction, so that the slipping problem caused by the axial displacement of the first bevel gear 41 is avoided, and the first step 621 is positioned at the upper part of the first mounting channel 62, so that interference is not generated in the bottom-up mounting process of the first bevel gear 41, that is, the mounting clearance requirement of the first bevel gear 41 is met.

The second mounting channel 63 of the base 50 extends in the front-rear direction, and specifically, a second mounting opening 630 is formed at the rear side. The second bevel gear 42 can be fitted into the second mounting passage 63 from the rear to the front through the second mounting port 630, and the gear shaft of the first bevel gear 41 faces upward in a state where the second bevel gear 42 is fitted into the second mounting passage 63. The foremost portion of the second mounting channel 63 communicates with the upper portion of the first mounting channel 62, and the substantially middle region of the second mounting channel 63 communicates with the middle portion of the leg mounting channel 61. In the present embodiment, the second mounting passage 63 has a size substantially identical to that of the gear in the axial direction of the second bevel gear 42 in the up-down direction, so that the second bevel gear 42 can rotate only with respect to the screw portion 11 of the first leg 10 without moving in the up-down direction. In order to support the gear shaft of the second bevel gear 42 to ensure stable rotation of the second bevel gear 42 in the second mounting channel 63 and reduce the rattle problem, a second stepped portion 631 is formed on the upper side wall of the second mounting channel 63 to protrude toward the inside of the second mounting channel 63 at a portion communicating with the first mounting channel 62, and the second stepped portion 631 abuts against the outer peripheral wall of the gear shaft of the second bevel gear 42.

In the assembly, the second bevel gear 42 may be first installed into the second installation hole from the rear side, then the first leg 10 is inserted into the leg installation hole 61 from bottom to top, and simultaneously the screw part 11 is connected to the second bevel gear 42 which has been placed in place in the second installation hole, then the first bevel gear 41 is installed into the first installation hole 510 from bottom to top to engage with the second bevel gear 42, and at the same time, the connection end 22 of the operating lever 20 may be inserted into the first bevel gear 41 to form a support for the first bevel gear 41, thereby completing the assembly. The assembly can be completed outside the base 50, so that the assembly is convenient and easy to operate, and on the other hand, the base 50 does not need to be split into a plurality of independent split components to meet the installation requirement of the supporting leg adjusting structure in the embodiment, namely, the base 50 can be integrally formed, so that the processing cost is further reduced, and the assembly process is simplified.

The power transmission assembly of the supporting leg adjusting structure of the embodiment adopts a transmission structure matched with bevel gear transmission, and because the bevel gear transmission can select a relatively smaller dynamic ratio, the power transmission assembly is more suitable for being adjusted through the rotating operating rod 20, the purpose of quickly adjusting the height can be achieved, and the power transmission assembly is more convenient and quicker for a user to operate. In the preferred scheme, two bevel gear parts matched with bevel gears in a transmission manner can be directly installed in corresponding installation channels, and are matched with corresponding operation rods 20 and screw rod parts 11 of first support legs 10 to realize quick installation, so that the assembly process is simplified, and the production cost is reduced.

Claims (14)

1. A support foot adjustment structure for a kitchen appliance for mounting on a base (50) of the kitchen appliance, comprising:

a first leg (10) provided on a base (50) of a kitchen appliance so as to be movable up and down with respect to the base (50), the first leg (10) having a vertically extending screw portion (11);

the operating rod (20) is arranged on the base (50) in a manner of being capable of rotating and adjusting around the axis of the operating rod, and two ends of the operating rod (20) in the length direction are respectively an operating end (21) and a connecting end (22) for a user to operate;

the power transmission assembly is arranged on the base (50) and transmits power between the operating rod (20) and the screw rod part (11) of the first support leg (10), so that the rotating motion of the operating rod (20) is converted into the up-and-down motion of the first support leg (10);

the method is characterized in that: the power transmission assembly comprises a first bevel gear (41) and a second bevel gear (42) which are meshed with each other, the first bevel gear (41) is connected with a connecting end (22) of the operating rod (20) and is driven to rotate by the operating rod (20), the second bevel gear (42) is rotationally sleeved on a screw rod part (11) of the first support leg (10) and is limited by the base (50) to move in the axial direction of the screw rod part (11), and the second bevel gear (42) is in threaded connection with the screw rod part (11) of the first support leg (10).

2. The supporting leg adjusting structure for kitchen appliances according to claim 1, wherein: the first bevel gear (41) is provided with a connecting hole (411) for inserting a connecting end (22) of the operating rod (20) therein.

3. The supporting leg adjusting structure for kitchen appliances according to claim 1, wherein: the operating rod (20) extends basically horizontally, the operating end (21) of the operating rod is provided with a rotary cap (30), and the rotary cap (30) is provided with an adjusting groove (33).

4. The supporting leg adjusting structure for kitchen appliances according to claim 1, wherein: the cross section of the screw part (11) of the first support leg (10) is non-circular.

5. The supporting leg adjusting structure for kitchen appliances according to claim 1, wherein: the first bevel gear (41) is located below the second bevel gear (42).

6. The utility model provides a cleaning machine, includes base (50) and locates supporting legs adjustment structure on base (50), its characterized in that: the supporting leg adjusting structure is the supporting leg adjusting structure for kitchen appliances according to any one of claims 1 to 5.

7. The cleaning machine of claim 6, wherein: the base (50) is provided with a vertically extending support leg mounting channel (61) for the screw rod part (11) of the first support leg (10) to be installed therein from bottom to top, the base (50) is also provided with a first vertically extending mounting channel (62) for the first bevel gear (41) to be installed therein and a second horizontally extending mounting channel (63) for the second bevel gear (42) to be installed therein, and the first mounting channel (62) and the support leg mounting channel (61) are communicated with the second mounting channel (63).

8. The cleaning machine of claim 7, wherein: a first mounting opening (620) into which the first bevel gear (41) is fitted from bottom to top is formed in the lower portion of the first mounting passage (62), the second mounting passage (63) extends front and rear, and a second mounting opening (630) into which the second bevel gear (42) is fitted is formed in the rear side.

9. The cleaning machine of claim 8, wherein: a through hole (520) for allowing a connecting end (22) of the operating rod (20) to penetrate is formed in the front side wall of the first mounting channel (62) at a position corresponding to the operating rod (20), a first step portion (621) for abutting against the outer peripheral wall of a gear shaft of the first bevel gear (41) is formed in the front side wall of the first mounting channel (62) in a protruding mode towards the inside of the first mounting channel (62) at a position above the through hole (520), and the end portion of the gear shaft of the first bevel gear (41) abuts against the peripheral edge of the through hole (520).

10. The cleaning machine of claim 9, wherein: the periphery of the through hole (520) comprises a first blocking part (521) positioned at the upper part and a second blocking part (522) positioned at the lower part, the first blocking part (521) and the second blocking part (522) are arranged in a staggered manner in the vertical direction, and the second blocking part (522) is closer to the operating end (21) of the operating rod (20).

11. The cleaning machine of claim 9, wherein: a second stepped portion 631 for abutting against the outer peripheral wall of the gear shaft of the second bevel gear 42 is formed on the upper side wall of the second mounting passage 63 so as to protrude toward the inside of the second mounting passage 63 at a portion penetrating the first mounting passage 62.

12. The cleaning machine of claim 6, wherein: the base (50) comprises a first supporting portion (51) and a second supporting portion (52) which are opposite in the front-back direction, the first supporting portion (51) is located on the front side of the base (50), the first supporting portion (51) and the second supporting portion (52) are vertically arranged and extend in the left-right direction, a first supporting foot (10) and a power transmission assembly of a supporting foot adjusting structure are located on the second supporting portion (52), an operating rod (20) of the supporting foot adjusting structure extends in the front-back direction, an operating end (21) of the operating rod (20) is connected to the first supporting portion (51), and a connecting end (22) of the operating rod (20) is connected to the second supporting portion (52).

13. The cleaning machine of claim 12, wherein: the operating end (21) of the operating rod (20) is provided with a rotary cap (30), the first supporting part (51) is provided with a first mounting hole (510) for the rotary cap (30) to be installed therein, the first mounting hole (510) is provided with a limit stop edge (511) extending inwards in the radial direction, and the rotary cap (30) is provided with an elastic buckle (31) which can be abutted against the inner side of the limit stop edge (511) in the state of being inserted into the first mounting hole (510) and a limit stop part (32) which is formed by extending outwards in the radial direction and is abutted against the outer side of the limit stop edge (511).

14. The cleaning machine of claim 6, wherein: the first leg (10) of the supporting leg adjusting structure and the power transmission assembly are located at the center of the bottom rear side of the base (50), and the bottom front side of the base (50) is also provided with second legs (53) which are arranged at left and right intervals.