JP5814032B2 - Exhaust hood lifting device - Google Patents

Description

  The present invention relates to a lifting device for an exhaust hood.

As a method of exhausting smoke generated from a range or a stove installed in a yakiniku restaurant or the like, a method of exhausting by providing an exhaust hood on the stove or the like is known.
Although it is efficient to install the exhaust hood at a position lower than the stove or the like, the exhaust hood becomes unnecessary after cooking.

In view of this, it has been proposed that the exhaust hood can be raised and lowered, and the exhaust hood can be raised and lowered so that the exhaust hood can be lowered and exhausted only when necessary.
In addition, the exhaust hood that can be raised and lowered allows the exhaust hood to approach the top of the stove where smoke is generated. There is also an advantage that the diameter can be reduced.

  For example, in Japanese Patent Application Laid-Open No. 2008-267636, an exhaust elevating hood is fixed in communication with an exhaust duct and extends downward, and an elevating cylinder inserted slidably into the drooping cylinder; A magnet that is attached to the elevating cylinder and fixes the elevating cylinder at an arbitrary position by being attracted to the hanging cylinder, and an attaching / detaching mechanism that enables the magnet to be attached to and detached from the hanging cylinder at an arbitrary position. It is disclosed that it is provided.

  Japanese Patent Application Laid-Open No. 2001-343141 discloses a hood that is disposed above a table and collects smoke generated on the table, and a lower end connected to a base portion having a smoke exhaust port of the hood, and an upper end is exhausted. There is disclosed an expansion / contraction smoke exhaust apparatus provided with an expansion / contraction cylinder connected to a duct and an expansion / contraction drive mechanism provided at a connection portion between the expansion / contraction cylinder and the smoke exhaust duct to expand / contract the expansion / contraction cylinder.

  Further, in Japanese Patent Application Laid-Open No. 09-112986, a sliding hoisting cylinder is fitted to a fixed hanging cylinder, and a smoke collecting hood is provided at the lower end of the sliding hoisting cylinder. A through-hole is formed in the rotating arm, and a core rod provided in the sliding elevating cylinder is slidably inserted into the above-described through-hole. By the frictional resistance between the through-hole and the core rod due to the inclination of the up-and-down rotating arm. It is disclosed that a universal joint that supports the weight of the sliding drooping cylinder and the smoke collecting hood is formed, and an elevating / lowering device for the elevating / lowering arm is provided.

JP 2008-267636 A JP 2001-343141 A JP 09-112986 A

In each of the above prior arts, the lifting cylinder can be moved up and down so that the dust collection hood attached to the lower end of the exhaust pipe can be positioned at an arbitrary height.
Therefore, it is necessary to have a lifting and lowering means for the lifting cylinder and a holding means for locking at an arbitrary position, which complicates the configuration and increases the cost in order to ensure safety and certainty. .

  Therefore, the present invention aims to simplify the configuration, maintain safety and certainty, and reduce the price by limiting the lifting range of the lifting cylinder of the exhaust hood to a certain height. .

According to a first aspect of the present invention, there is provided a lifting apparatus for an exhaust hood for a range in which a metal fitting having a guide hole is provided on the upper and lower portions of the inner wall of the fixed cylinder, and a shaft standing in the lifting cylinder is provided in the guide hole. with inserted, that the lifting tube was fitted inserted slidably on the outside of the fixed cylinder, the provision of the locking stopper drop point on the upper end of the shaft protruding from the upper guide hole, and the locking stopper wherein providing the shock absorbing means between the upper bracket, that was raised point as freely detachable and locking piece provided in the upper portion of latching ledges and the elevating cylinder provided on an upper portion of the fixed cylinder, the drops The lifting cylinder is moved up and down by a lifting handle provided on the lifting cylinder between a point and the rising point .

According to a second aspect of the present invention, there is provided a lift exhaust hood for a range according to the first aspect of the present invention, characterized in that a guide spacer that slides on the inner wall of the lift cylinder protrudes from the lower outer wall of the fixed cylinder. .

A lifting device for a range exhaust hood according to a third aspect of the invention is characterized in that, in the first or second aspect of the invention, a guide spacer is provided on the upper inner wall of the lifting cylinder so as to slide on the outer wall of the fixed cylinder. It is.

  The effect of the invention of claim 1 is that a metal fitting having a guide hole is provided oppositely on the upper and lower parts of the inner wall of the fixed cylinder, and a shaft rising in the lifting cylinder is inserted into the guide hole so as to be outside the fixed cylinder. Since the elevating cylinder is slidably inserted, the elevating cylinder can be moved up and down while being fitted outside the fixed cylinder, and the shaft of the elevating cylinder is inserted into the upper and lower guide holes of the fixed cylinder. Has the effect of sliding smoothly up and down without rotating.

In addition, since the locking stopper for the lowering point is provided at the upper end of the shaft protruding from the upper guide hole, the locking stopper of the lifting cylinder is locked to the metal fitting of the upper guide hole of the fixed cylinder and the lowering point is On the other hand, since the locking rod provided on the upper part of the fixed cylinder and the locking piece provided on the upper part of the elevating cylinder can be freely attached and detached, Wear and support as a rising point.
Therefore, the lifting cylinder is supported only at the upper and lower two points, and it is possible to simplify the structure by a simple operation of lowering when in use and raising when not in use, maintaining safety and certainty, and realizing low price. It is effective.

In addition , shock absorbing means is provided between the shaft locking stopper and the upper bracket, so that when the lifting stopper is locked to the bracket in the upper guide hole of the fixed cylinder, the lifting cylinder is subjected to an impact when it is lowered. The effect of relaxing absorption is demonstrated , and it can be easily operated with the lifting handle provided on the lifting cylinder.

In the invention of claim 2 , in addition to the effect of claim 1 , since the guide spacer that slides on the inner wall of the lifting cylinder projects from the lower outer wall of the fixed cylinder, the guide spacer keeps the gap between the lifting cylinder and the fixed cylinder. It will slide, and has the effect of preventing backlash between both cylinders during ascent and descent.

A third aspect of the present invention, in addition to the effect of claim 1 or 2, for the guide spacer rubbing the outer wall of the fixed cylinder to the upper inner wall of the lift cylinder projecting from, as in claim 2, the lift cylinder and the fixed cylinder The guide spacer keeps sliding with the gap between the two cylinders and has an effect of preventing backlash between the two cylinders during ascent and descent.

It is a partial cross section figure at the time of the fall of the exhaust hood which shows the raising / lowering apparatus of this invention. It is a partial cross section figure at the time of the raising of the exhaust hood which shows the raising / lowering apparatus of this invention. It is the side view made into the partial cross section of the raising / lowering cylinder. It is the side view made into the partial cross section of the fixed cylinder.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an embodiment of the present invention, and is a partial cross-sectional view when the exhaust hood showing the lifting device is lowered, and FIG. 2 is a partial cross-sectional view when the exhaust hood is raised.

  For example, in a yakiniku restaurant, an exhaust pipe is usually installed above a heater such as a stove or stove. A suction port is attached to the lower end of the exhaust pipe, and a grease filter, a damper, etc. The interior is equipped with a duct that is connected in the horizontal direction behind the ceiling, the front of the duct opens to the outside, and the exhaust fan forcibly exhausts it to the outdoors.

  In FIG. 1 and FIG. 2, the displayed component members are suspended from the ceiling and fixed, and the height adjustment is made in relation to the grease filter unit 1 of the exhaust pipe installed above the range stove and the range stove. The fixed cylinder 2 and the raising / lowering cylinder 3 for doing are shown.

The fixed cylinder 2 is connected and fixed to the grease filter unit 1 via a detachable cylinder 21, and the elevating cylinder 3 is fitted on the outside of the fixed cylinder 2 so as to be able to move up and down.
A head portion 4 serving as a suction port for exhaust gas or the like is attached to the lower end portion of the elevating cylinder 3, and the appropriateness of the distance between the head portion 4 and a grill such as a range has a significant effect on the suction efficiency. .

L-shaped metal fittings 5, 5 having guide holes 6, 6 facing each other are provided on the upper and lower portions of the inner wall of the fixed cylinder 2.
On the other hand, the raising base 7 is fixed to the inner wall at the lower end of the elevating cylinder 3, and the shaft 8 is erected vertically (parallel to the vertical direction along the inner wall) on the raising base 7. The leading end extends beyond the upper edge of the lifting cylinder 3.

  Since the shaft 8 standing up in the guide holes 6 and 6 of the fixed cylinder 2 is inserted and the elevating cylinder 3 is slidably fitted on the outside of the fixed cylinder 2, the upper and lower guides of the fixed cylinder 2 are inserted. Since the shaft 8 of the elevating cylinder 3 slides smoothly in the holes 6 and 6, the elevating cylinder 3 is guided up and down without rotating and moved up and down.

In addition, a descent stop stopper 9 is provided at the upper end of the shaft 8 of the elevating cylinder 3 protruding from the guide hole 6 at the top of the fixed cylinder 2.
Therefore, when the elevating cylinder 3 is lowered, the locking stopper 9 of the elevating cylinder 3 is engaged with the metal fitting 5 of the upper guide hole 6 of the fixed cylinder 2, and no further descending is supported as a lowering point. The distance between the head 4 attached to the lower end of the lifting cylinder 3 and the grill such as a range can be set by the position of the locking stopper 9.

Further, by providing an impact absorbing means 10 between the locking stopper 9 of the shaft 8 and the upper metal fitting 5, the locking stopper 9 of the elevating cylinder 3 engages with the metal fitting 5 of the upper guide hole 6 of the fixed cylinder 2 when descending. When doing so, the impact applied by the weight of the lifting cylinder 3 can be absorbed and relaxed.
In the drawing, as an example, although the spring and the receiving tray 15 are loosely inserted into the shaft 8 on the upper surface of the metal fitting 5 provided with the upper guide hole 6 of the fixed cylinder 2, the spring is wound around and installed immediately below the locking stopper 9. May be.

On the other hand, a locking rod 10 is provided at the upper part of the fixed cylinder 2, and a locking piece 11 is provided at the upper position of the elevating cylinder 3 so as to be freely detachable.
For this reason, when the elevating cylinder 3 is raised, it comes into contact and the locking piece 11 is abutted and locked to the locking rod 10 to be supported as a rising point.

  Therefore, the lifting cylinder 3 is raised and lowered and is supported only at the upper and lower two points. When the exhaust is used, it is lowered to suck the exhaust gas, and when not used, it is raised to a height that does not interfere. It can be done with a simple manual operation.

In the embodiment of the drawings, a commercially available push latch is diverted to the locking rod 10 so that it can be easily attached and detached by abutment with the locking piece 11, and the knock portion 10 </ b> A is knocked by the locking piece 11. By doing so, the locking collar portion 10B swings in the lateral direction and is attached to and detached from the locking portion 11A of the locking piece 11.
It can be easily operated with the lifting handle 12 provided in the lifting cylinder 3.

Further, a guide spacer 13 is slidably provided on the lower outer wall of the fixed cylinder 2 and rubbed against the inner wall of the elevating cylinder 3, and a guide spacer 14 is also provided on the upper inner wall on the elevating cylinder 3 side to be rubbed against the outer wall of the fixed cylinder 2. By projecting, the guide spacer 13 or 14 is slid while the gap between the elevating cylinder 3 and the fixed cylinder 2 is maintained, and an effect of preventing backlash between the both cylinders during elevating is achieved.
Three guide spacers 13 and 14 are provided at equal intervals on each peripheral wall.

  The embodiments of the present invention have been specifically described with reference to the drawings. However, the present invention is not limited to the above-described embodiments, and other embodiments can be used without departing from the spirit of the invention. Is also applicable.

DESCRIPTION OF SYMBOLS 1 Grease filter unit 2 Fixed cylinder 3 Elevating cylinder 4 Head part 5 Metal fitting 6 Guide hole 7 Standing base 8 Shaft 9 Locking stopper 10 Locking hook 11 Locking piece 12 Lifting handle 13, 14 Guide spacer 15 Receptacle

Claims (3)

A metal fitting having a guide hole is provided horizontally on the upper and lower parts of the inner wall of the fixed cylinder, and a shaft rising in the elevating cylinder is inserted into the guide hole, and the elevating cylinder is slidably fitted outside the fixed cylinder. interpolated, said upper guide at the upper end portion of the shaft protruding from the hole to the provision of the locking stopper descent point, providing the shock absorbing means between this locking stopper the upper bracket of the fixed cylinder it was raised point attachment and detachment of the locking piece provided on the top of the latching ledges provided in the upper the lifting cylinder as a freely between the rising point and the falling point in elevating handle provided on the elevating cylinder A lifting device for an exhaust hood, wherein the lifting cylinder is lifted and lowered. 2. The exhaust hood lifting / lowering device according to claim 1, wherein a guide spacer that slides on the inner wall of the lifting / lowering cylinder projects from the lower outer wall of the fixed cylinder. 3. The exhaust hood lifting / lowering device according to claim 1, wherein a guide spacer is provided on the upper inner wall of the lifting / lowering cylinder so as to project on the outer wall of the fixed cylinder.

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