CN108253479B

CN108253479B - Oil-proof sealing structure for sliding rod and range hood applying oil-proof sealing structure

Info

Publication number: CN108253479B
Application number: CN201611244548.6A
Authority: CN
Inventors: 张静; 叶丰; 申志贤; 茅忠群; 诸永定
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2016-12-29
Filing date: 2016-12-29
Publication date: 2020-08-21
Anticipated expiration: 2036-12-29
Also published as: CN108253479A; WO2018120275A1

Abstract

The utility model provides an grease proofing seal structure for slide bar, which comprises a mounting substrate, the apron, sealed pad and slide bar, it has first through-hole to open on mounting substrate, the apron covers on mounting substrate, and it has the second through-hole to open at apron central part, thereby be formed with the annular cavity around first through-hole and second through-hole periphery between mounting substrate and apron, sealed pad is located in this annular cavity, and it has the third through-hole to open at sealed central part that fills up, the slide bar passes the second through-hole in proper order, third through-hole and first through-hole, the slide bar outer wall is laminated mutually or is adjacent closely with sealed pad, and slide bar and sealed slip relatively. Through the cooperation of sealing pad and slide bar, allow the skew of certain degree in the horizontal direction when making the slide bar up-and-down motion, can reach the effect of sealed oil smoke simultaneously again to avoid the oil smoke to get into the oil smoke of collection petticoat pipe top through the through-hole on mounting substrate and the apron and keep apart the intracavity, ensure that the actuating mechanism of slide bar is under non-oil smoke environment all the time.

Description

Oil-proof sealing structure for sliding rod and range hood applying oil-proof sealing structure

Technical Field

The invention relates to the field of kitchen equipment, in particular to an oil-proof sealing structure for a sliding rod and a range hood applying the oil-proof sealing structure.

Background

At present, in order to improve the oil smoke absorption effect of the range hood, people invent various range hoods with movable smoke guide plates, and when the range hood works, the smoke guide plates are driven by a driving mechanism to perform lifting motion or deflection motion, so that the angle of an air inlet and the air inlet amount of the range hood are adjusted. Chinese utility model patent No. 201620042811.2 (No. CN 205372692U) discloses "european style range hood with automatic smoke guide", which comprises smoke guide plate and fixed plate, fixed plate one side is equipped with fixed guide rail, be equipped with matched with motion guide rail in the fixed guide rail, the other transfer line that is equipped with of fixed guide rail, this transfer line offsets with the motion guide rail, the fixed plate opposite side is equipped with the motor, the motor links to each other with the transfer line, the motion guide rail lower extreme is equipped with the fixed bolster, the fixed bolster offsets with smoke guide plate, be equipped with the connecting rod on the transfer line, the connecting rod is arranged in on the motion guide rail, drive transfer line and connecting rod through the motor, thereby make the motion guide rail do the up-and-down motion on fixed guide rail, so as to control smoke guide plate up-and. Although, this range hood is used for driving the actuating mechanism of leading cigarette board up-and-down motion's simple structure and sets up also comparatively rationally, however, this range hood's leading cigarette board actuating mechanism does not consider the pollution of oil smoke environment, uses the back for a long time, is stained with the greasy dirt on each subassembly of this actuating mechanism easily for the motion friction increase between each subassembly, and then leads to leading cigarette board to be difficult to carry out elevating movement smoothly, simultaneously, also can reduce actuating mechanism's life. In addition, due to the existence of oil smoke in the kitchen, other devices which need a sliding rod, such as a drawer type disinfection cabinet, a steam box with a telescopic panel, an oven and the like, have similar problems.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide an oil-proof sealing structure for a sliding rod, which has a simple structure and a good sealing effect, in view of the above-mentioned current state of the art.

The second technical problem to be solved by the invention is to provide a range hood with the oil-proof sealing structure, which can effectively prevent the driving mechanism of the air deflector from being polluted by oil smoke, aiming at the current situation of the prior art.

The technical scheme adopted by the invention for solving the first technical problem is as follows: this an grease proofing seal structure for slide bar, its characterized in that: including mounting substrate, apron, sealed pad and slide bar open on the mounting substrate has first through-hole, the apron covers mounting substrate on to open at the central part of apron have with the second through-hole that first through-hole aligns, thereby be formed with the annular cavity around first through-hole and second through-hole periphery between mounting substrate and the apron, sealed pad locate in this annular cavity to open at sealed central part of filling up have with the third through-hole that first through-hole, second through-hole align, the slide bar pass in proper order second through-hole, third through-hole and first through-hole, the outer wall of slide bar is adjacent with sealed the pad, and slide bar and sealed slidable relatively.

Preferably, the sealing gasket is limited between the mounting base plate and the cover plate in the sliding direction of the sliding rod, and a movable gap for the sealing gasket to deviate in the direction perpendicular to the sliding direction of the sliding rod is reserved between the outer periphery of the sealing gasket and the inner cavity wall of the annular cavity. Thus, the mounting base plate and the cover plate can restrict the movement of the gasket in the sliding direction of the sliding rod, but allow the gasket to be displaced in the direction perpendicular to the sliding direction with the sliding rod, thereby achieving the effect of a floating seal.

Preferably, the aperture of the first through hole is smaller than that of the second through hole, the aperture of the third through hole is smaller than that of the first through hole, a check ring extending into the first through hole is formed at the edge of the third through hole of the sealing gasket, and a movable gap is reserved between the check ring and the edge of the first through hole. Thus, when the gasket is displaced along with the slide bar, the slide bar is prevented from directly contacting the mounting substrate.

The sealing gasket can have multiple limit structures between the mounting substrate and the cover plate, preferably, one side surface of the sealing gasket abuts against the mounting substrate, convex parts distributed at intervals are formed on the other side surface of the sealing gasket, and the convex parts abut against or are close to the cover plate. The sealing gasket is provided with the convex parts distributed at intervals, so that the friction force between the sealing gasket and the cover plate in the offset process can be reduced.

Further preferably, the convex portion is provided on the periphery of the gasket.

Preferably, the first through hole, the second through hole and the third through hole are all kidney-shaped holes, and correspondingly, the cross section of the sliding rod is kidney-shaped.

The sealing gasket can be made of various materials and is a preferred scheme, the sealing gasket is a plastic piece or a rubber piece, and a fit gap is reserved between the edge of the third through hole of the sealing gasket and the sliding rod. Because the material of working of plastics and rubber spare is harder relatively, therefore sealed the pad and leave the fit clearance between the slide bar after, can avoid slide bar and sealed pad to produce the contact friction, and then make the slide bar motion more smooth and easy.

More preferably, the width of the fitting gap is 0.08mm to 0.12 mm.

As another preferable mode, the gasket is a felt member, and an edge of the third through hole of the gasket is in direct contact with the slide bar. This sealed pad and slide bar direct contact back, it is better not only to prevent oil effect, and in addition, felt spare material is softer, and in the relative sealed pad motion process of slide bar, the greasy dirt of adhesion on the slide bar can be scraped to felt spare, and then makes the slide bar motion more smooth and easy.

The technical scheme adopted by the invention for solving the second technical problem is as follows: this use has above-mentioned grease proofing seal structure's that is used for the slide bar range hood, including collection petticoat pipe and the air deflection assembly who locates collection petticoat pipe below, its characterized in that: the mounting substrate is a part of the fume collecting hood, the first through hole is formed in the fume collecting hood, a fume isolating cavity is formed above the fume collecting hood, the upper end of the sliding rod extends into the fume isolating cavity, the lower end of the sliding rod is connected with the air deflector assembly, and a driving mechanism for driving the sliding rod to move up and down is mounted in the fume isolating cavity.

Compared with the prior art, the invention has the advantages that: in the annular cavity between mounting substrate and the apron was located to sealed the pad among this grease proofing seal structure, mounting substrate and apron can restrict sealed the pad and remove on the slide bar sliding direction, but allow sealed the pad can produce the skew on the perpendicular to sliding direction along with the slide bar, thereby reach floating seal's effect, the range hood that adopts this seal structure can avoid the oil smoke to get into the oil smoke isolation chamber of collection petticoat pipe top through the through-hole on mounting substrate and the apron, ensure that the actuating mechanism of slide bar is under the non-oil smoke environment all the time, and then make the slide bar can keep smooth and easy motion, and extension actuating mechanism's life.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic exploded view of an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of another embodiment of the present invention;

FIG. 4 is an exploded perspective view of another embodiment of the present invention;

FIG. 5 is a structural cross-sectional view of an embodiment of the present invention;

FIG. 6 is a schematic structural view of a range hood incorporating the present invention;

FIG. 7 is a schematic view of the structure of FIG. 6 with the fume collecting hood removed;

fig. 8 is a schematic structural view of the fume collecting hood of fig. 6.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 5, the oil-proof sealing structure in the present embodiment includes a mounting substrate 1, a cover plate 2, a gasket 3, and a sliding rod 4, wherein a first through hole 11 is formed in the mounting substrate 1, a second through hole 21 aligned with the first through hole 11 is formed in a central portion of the cover plate 2, the cover plate 2 is covered and fixed on the mounting substrate 1, and an annular cavity 5 is formed between the mounting substrate 1 and the cover plate 2 around the outer peripheries of the first through hole 11 and the second through hole 21. The gasket 3 is disposed in the annular cavity 5, and a third through hole 31 aligned with the first through hole 11 and the second through hole 21 is formed in a central portion of the gasket 3. The slide bar 4 is vertically arranged, the slide bar 4 sequentially penetrates through the second through hole 21, the third through hole 31 and the first through hole 11 from top to bottom and is matched with the sealing gasket 3, namely, the outer wall of the slide bar 4 is attached to or adjacent to the sealing gasket 3, and the slide bar 4 can slide up and down relative to the sealing gasket 3. After the sealing gasket 3 is installed, the two side faces of the sealing gasket 3 are limited between the base plate 1 and the cover plate 2, and a movable gap for the sealing gasket 3 to shift back and forth in the horizontal direction is reserved between the periphery of the sealing gasket 3 and the inner cavity wall of the annular cavity 5.

In this embodiment, the first through hole 11, the second through hole 21, and the third through hole 31 are all kidney-shaped holes, and correspondingly, the cross section of the sliding rod 4 is kidney-shaped. And, the aperture of first through-hole 11 is less than the aperture of second through-hole 21, the aperture of third through-hole 31 is less than the aperture of first through-hole 11, sealed 3 is formed with retaining ring 32 that extends downwards to in the first through-hole 11 at the border of third through-hole 31, leave the activity clearance between retaining ring 32 and the border of first through-hole 11, like this, when sealed 3 produces the skew along with slide bar 4 on the horizontal direction, can avoid slide bar 4 and mounting substrate 1 direct contact, make slide bar 4 can not damage when the motion.

The gasket 3 is confined between the mounting substrate 1 and the cover plate 2. Specifically, the lower side surface of the gasket 3 abuts against the mounting substrate 1, and the upper side surface of the gasket 3 is formed with convex portions 33 distributed at intervals, the convex portions 33 being provided at the periphery of the gasket 3. The convex portion 33 is preferably a convex point, and may directly abut against the cover plate 2, or may be close to the cover plate 2 with a small gap therebetween.

The gasket 3 in this embodiment may be made of a variety of different materials. For example, a relatively hard material such as a plastic member or a rubber member may be used, and when the plastic member or the rubber member is used, a fit clearance is required to be left between the edge of the third through hole 31 of the sealing gasket 3 and the sliding rod 4, the fit clearance is generally set to be 0.08mm to 0.12mm, preferably 0.1mm, so as to prevent the sliding rod 4 from generating contact friction with the sealing gasket 3, and further, the sliding rod 4 can move more smoothly.

As shown in fig. 6 to 8, the range hood of the present embodiment includes a smoke collecting hood 6 and an air guide plate assembly 7 disposed below the smoke collecting hood 6, the mounting substrate 1 is a part of the smoke collecting hood 6, the first through hole 11 is formed on the smoke collecting hood 6, the cover plate 2 is mounted on the smoke collecting hood 6, and an annular cavity 5 is formed between the smoke collecting hood 6 and the cover plate 2. The upper side and the lower side of the fume collecting hood 6 are respectively a non-lampblack environment and a lampblack environment, namely a lampblack isolating cavity 8 is formed above the fume collecting hood 6. The sliding rod 4 longitudinally penetrates through the fume collecting hood 6, namely the sliding rod 4 penetrates through a fume environment and a non-fume environment, the upper end of the sliding rod 4 extends into the fume isolation cavity 8, the lower end of the sliding rod 4 is connected to the air deflector assembly 7, and a driving mechanism 9 for driving the sliding rod 4 to move up and down is installed in the fume isolation cavity 8.

When the cigarette guiding device works, the driving mechanism 9 drives the sliding rod 4 to move up and down, and then drives the cigarette guiding plate 7 to move up and down. Receive the influence of actuating mechanism precision, slide bar 4 can produce the skew of certain degree in the horizontal direction in the up-and-down motion, through the grease proofing seal structure in this embodiment after, can restrict the motion of sealed 3 vertical directions that fill up, and release the degree of freedom of horizontal direction, make sealed 3 that fill up can produce horizontal migration along with slide bar 4's skew on the whole, thereby reach floating seal's effect, avoid the oil smoke to get into the oil smoke isolation chamber 8 of collection petticoat pipe 6 top through the through-hole on mounting substrate 1 and the apron 2 in, thereby ensure that actuating mechanism 9 of slide bar 4 is under the non-oil smoke environment all the time, and then make slide bar 4 can smoothly carry out the up-and-down motion all the time.

Although the present invention is only exemplified by a range hood, the oil-proof sealing structure for the sliding rod in the present invention is not limited to the range hood, and can also be used for other kitchen equipment such as drawer type disinfection cabinets, steam boxes with telescopic panels, ovens, etc., which are all considered to be within the protection scope of the present invention.

Claims

1. The utility model provides an grease proofing seal structure for slide bar which characterized in that: comprises a mounting substrate (1), a cover plate (2), a sealing gasket (3) and a sliding rod (4), wherein a first through hole (11) is formed in the mounting substrate (1), the cover plate (2) covers the mounting substrate (1), a second through hole (21) aligned with the first through hole (11) is formed in the central part of the cover plate (2), an annular cavity (5) surrounding the peripheries of the first through hole (11) and the second through hole (21) is formed between the mounting substrate (1) and the cover plate (2), the sealing gasket (3) is arranged in the annular cavity (5), a third through hole (31) aligned with the first through hole (11) and the second through hole (21) is formed in the central part of the sealing gasket (3), and the sliding rod (4) sequentially penetrates through the second through hole (21), the third through hole (31) and the first through hole (11), the outer wall of the sliding rod (4) is adjacent to the sealing gasket (3), the sliding rod (4) and the sealing gasket (3) can slide relatively, the sealing gasket (3) is limited between the mounting base plate (1) and the cover plate (2) in the sliding direction of the sliding rod (4), a movable gap for enabling the sealing gasket (3) to generate deviation in the direction perpendicular to the sliding direction of the sliding rod is reserved between the periphery of the sealing gasket (3) and the inner cavity wall of the annular cavity (5), the aperture of the first through hole (11) is smaller than that of the second through hole (21), the aperture of the third through hole (31) is smaller than that of the first through hole (11), a check ring (32) extending into the first through hole (11) is formed at the edge of the third through hole (31) of the sealing gasket (3), and a movable gap is reserved between the check ring (32) and the edge of the first through hole (11), the sealing gasket (3) is a plastic part or a rubber part, and a fit clearance is reserved between the edge of the third through hole (31) of the sealing gasket (3) and the sliding rod (4).

2. The oil resistant sealing structure for a sliding rod according to claim 1, characterized in that: one side surface of the sealing gasket (3) is abutted against the mounting substrate (1), convex parts (33) distributed at intervals are formed on the other side surface of the sealing gasket (3), and the convex parts (33) are abutted against or close to the cover plate (2).

3. The oil resistant sealing structure for a slide rod according to claim 2, characterized in that: the convex portion (33) is provided at the periphery of the gasket (3).

4. The oil resistant sealing structure for a sliding rod according to claim 1, characterized in that: the first through hole (11), the second through hole (21) and the third through hole (31) are all waist-shaped holes, and correspondingly, the cross section of the sliding rod (4) is waist-shaped.

5. The oil resistant sealing structure for a sliding rod according to claim 1, characterized in that: the width of the fit clearance is 0.08 mm-0.12 mm.

6. A range hood to which the oil-proof sealing structure for the sliding rod according to any one of claims 1 to 5 is applied, comprising a hood (6) and an air guide plate assembly (7) provided below the hood, characterized in that: mounting substrate (1) be the partly of collection petticoat pipe (6) promptly, first through-hole (11) form in collection petticoat pipe (6) on the top of collection petticoat pipe (6) is formed with the oil smoke and keeps apart chamber (8), the upper end of slide bar (4) stretch into in oil smoke keeps apart chamber (8), the lower extreme of slide bar (4) is connected air deflector subassembly (7) install drive slide bar (4) up-and-down motion's actuating mechanism (9) in oil smoke isolation chamber (8).