JP3421010B2 - Filter holding frame for range hood - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is attached to an opening of a range hood installed in a kitchen of a general home or a restaurant and holds a filter to prevent the ventilation fan and the exhaust duct inside the range hood from being contaminated. The present invention relates to a filter holding frame for a range hood used in.

[0002]

2. Description of the Related Art This type of range hood filter holding frame is generally formed in a rectangular frame shape for holding a quadrilateral sheet-shaped filter made of glass fiber or the like, and is provided around the opening of the range hood. Provided mounting groove, magnet or heat-resistant Velcro (registered trademark) (cloth fastener)
It is attached so that it can be detached. For example, as shown in FIG. 6, both ends of the holding frame A holding the filter 6 are inserted into the mounting grooves 33 provided around the opening 32 of the range hood 31.

[0003]

The vertical and horizontal dimensions of the opening of the range hood and the mounting dimensions for the mounting groove and the like around the opening differ depending on the manufacturer of the range hood, and the dimensions manufactured for a specific range hood. In many cases, even if the holding frame for a filter is attached to another range hood, it cannot be attached.

As a countermeasure for this, a range hood filter holding frame and the like have been developed in which the size of the holding frame can be expanded by, for example, detachably adding an auxiliary holding frame (Japanese Patent No. 2911110).

[0005]

However, in the structure in which the auxiliary holding frame is added as described above, even if a common basic holding frame can be used, only one type of size is provided by one type of auxiliary holding frame. It cannot be expanded, and it is necessary to manufacture an auxiliary holding frame for each size.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a range hood filter holding frame which can be easily applied to a range hood having various sizes of openings and mounting portions.

[0007]

The invention according to claim 1 is
In a rectangular range hood filter holding frame, at least two opposing frame members are length-adjustable by fitting and connecting two mold members so that they can slide in the length direction. Has a plurality of engaging holes formed at predetermined intervals in the length direction, a protrusion capable of engaging with the engaging hole is formed on the other mold member, and the protrusion is selectively engaged with the engaging hole. At the same time, the frame member is fixed to a predetermined length by urging both mold members in the contracting direction by a spring.

According to a second aspect of the present invention, in the range hood filter holding frame according to the first aspect, each pair of springs is provided and the frame members are stretched in a cross shape on a diagonal line of the filter holding frame. Is urged in the contraction direction and the filter surface is pressed.

[0009]

FIG. 5 is an exploded perspective view of a filter holding frame for a range hood to which the present invention is applied. The main body frame 1 is formed in a rectangular frame shape (rectangular shape) and the four corners of the main body frame 1. A pair of filter pressing coil springs 3 that are locked to the corners of the coil and are stretched diagonally, and a slack preventing coil spring 5 that is stretched between two opposing sides. A quadrilateral sheet-shaped filter 6 made of glass fiber or the like is fitted in the main body frame 1, and the filter 6 is pressed by the coil spring 3 for pressing the filter from above and supported by the coil spring 5 for preventing slack from below. Be assembled into.

Locking metal fittings 7 are connected to both ends of the pressing coil spring 3, and the locking metal fittings 7 are formed, for example, in the shape of a rectangular box having two faces open so that they can be engaged with the corners of the main body frame 1. It has become. Further, hooks 8 formed by bending a metal plate into a J shape are connected to both ends of the slack prevention coil spring 5.

The frame members 11 on the four sides of the body frame 1 are
Two types of male and female stainless steel mold members 12 and 13 are fitted and connected to each other so as to be slidable in the length direction so that they can be expanded and contracted in the length direction. For convenience of explanation, two types of mold materials 12,
Of the 13, the male side is the first die member 12 and the female side is the second die member 13
Will be described below.

FIG. 4 is an exploded partial perspective view of the frame member 11. The first mold member 12 on the male side has an L-shaped cross section, and the rising portion 12c is located on the outer side of the holding frame. The second mold member 13 is also formed to have an L-shaped cross section, but has a downward slide groove 15 at the upper end of the rising portion 13c.
And a lateral slide groove 16 at one end on the opposite side so that the end portions 12a and 12b of the first mold member 12 can be inserted into the slide grooves 15 and 16 so as to be slidable in the longitudinal direction, respectively. Has become.

A plurality of square engagement holes 20 are formed in the bottom plate of the second mold member 13 at a predetermined pitch P2 in the length direction of the frame member, while the bottom plate of the first mold member 12 has a square shape. Square-shaped protrusion 21 formed by cutting and raising a V-shaped kerf downward
However, a plurality of them are formed at the same pitch P1 as the pitch P2 of the engaging holes 20.

The projections 21 are cut and raised so that the tips thereof are oriented in the contraction movement direction F1 of the first die member 12, and therefore, as shown in FIG. 2, each projection 21 meshes with the edge of the engaging hole 20. Occasionally, the first mold material 1 is used with respect to the second mold material 13.
The movement of 2 in the F1 direction is blocked, and it is fixed at that position.

FIG. 3 is a sectional view of the frame member 11 (III-II in FIG. 1).
(Enlarged view of I section), the inner height H2 of the rising portion 13c of the second mold material 13 has a certain play C1 in the vertical direction with respect to the height H1 of the rising portion 12c of the first mold material 12. In addition, with respect to the thickness t1 of the end portion 12b of the bottom plate of the first mold member 12, the vertical width H3 of the lateral slide groove 16 of the second mold member 13 also has a certain play C2 in the vertical direction. Is set. As a result, the first mold member 1 is moved from the engaged state of the protrusion 21 and the engaging hole 20.
2 is lifted from the bottom plate of the second mold material 13, and the first mold material 1
2 is the contraction direction F1 and the withdrawal direction (expansion direction) F2 in FIG.
You can move to any of.

FIG. 1 is a plan view of a filter holding frame,
The first mold material 12 of each frame member 11 is the frame member 1 on the adjacent side.
It is integrally connected to the second mold member 13 of No. 1 in an L shape by a rivet or the like. That is, the entire main body frame 1 is configured such that the vertical and lateral adjustments can be made by combining four members formed by the first mold member 12 and the second mold member 13 into an L shape.

In this embodiment, nine engaging holes 20 of the second mold member 13 on each side are formed, and the pitch P2 of them is set to the same size. First of each side
Four protrusions 21 of the mold material 12 are formed in each of the embodiments.

[0018]

[Assembly and Adjustment Method] Each first mold member 12 is slidably inserted into each second mold member 13 on a corresponding side, and a slack preventing coil spring 5 is provided between a pair of opposing second mold members 13. To stretch. Each locking metal fitting 8 of the slack prevention coil spring 5
Engages with the lateral slide groove 16 portion inside the frame of the second mold member 13.

First mold material 12 and second mold material 1 of each frame member 11
By sliding 3 and 3 in the length direction, each frame member 1
The length of 1 is set to a predetermined length, and the engagement hole 20 that meshes with each projection 21 is selected, and the projection 21 and the engagement hole 20 are meshed as shown in FIG. That is, the horizontal dimension of the body frame 1 is adjusted to a desired dimension.

In FIG. 5, after the adjustment, the filter 6 is fitted into the body frame 1. The outer peripheral end of the filter 6 is held by the rising portions 12c and 13c of the mold members 12 and 13 so as not to be displaced in the horizontal direction as shown in FIG.

Next, referring to FIG. 5, the retaining metal fittings 7 of the pressing coil springs 3 are respectively retained at the four corners of the frame body 1, so that the pressing coil springs 3 are stretched diagonally in a cross shape. To do. As a result, the filter 6 is pressed by the pressing coil spring 3 from above and is supported by the slack preventing coil spring 5 from below. At the same time, the first and second mold members 12 and 13 of each frame member 11 are urged in the contraction direction by the tension of the pressing coil spring 3, and the shape (size) of the main body frame 1 is firmly held at a predetermined size. To be done.

In addition to maintaining the shape of the main body frame 1 only by the urging force of the pressing coil spring 3, for example, a locking screw is screwed into one of the second die members, and after adjusting the dimensions,
It is also possible to tighten the locking screw and press it against the surface of the mating mold material to finally fix it.

As shown in FIG. 4, when the projection 21 is formed by cutting and raising the mold material itself, it is possible to easily form a ratchet-type projection shape that reliably locks only in the contracting direction of the frame member.

[0024]

[Other Embodiments of the Invention] (1) At least two engaging holes 20 are formed in the second mold member 13. On the other hand, the number of the protrusions 21 formed on the first mold material 12 may be one, but both the mold materials 12, 1 after the dimension adjustment are performed.
In order to reduce rattling between the three, it is preferable to form a plurality as shown in FIG.

(2) Aluminum mold materials can be used as the mold materials 12 and 13, and can be made of a resin having heat resistance and high hardness.

(3) In the illustrated embodiment, the frame members 11 on the four sides are all configured to be expandable and contractible, but only one set of frame members 11 on the opposite two sides are configured to be expandable and contractable. Is also possible.

(4) The projection 21 is not limited to the cut-and-raised type as shown in FIG. 4, but various projections such as a squeezing type can be formed.

[0028]

As described above, according to the present invention, (1) a rectangular range hood filter holding frame for holding a quadrilateral sheet-shaped (plate-shaped) filter 6 has at least two opposing frames. Since the member 11 is adjustable in expansion and contraction, it is possible to attach to a range hood of various sizes by manufacturing one kind of main body frame 1 and to provide a versatile range hood filter holding frame. You can

(2) The length of the frame member 11 on two opposite sides can be adjusted by fitting and connecting the two mold members 12 and 13 so as to be slidable in the length direction. A plurality of engaging holes 20 are formed at predetermined intervals in the vertical direction, a protrusion 21 that can be engaged with the engaging hole 20 is formed on the other mold member 12, and the protrusion 21 is selected as the engaging hole 20. The frame member 11 is fixed to a predetermined length by urging both the mold members 12 and 13 in the contracting direction by the spring 3 as well as mechanically engaging the main frame 1 with a desired size. In addition, the adjustment of the body frame 1 can be performed easily and accurately, and the state of the body frame 1 after the adjustment can be firmly held by the biasing force of the spring 3.

(3) In the invention according to claim 2, a pair of springs 3 for pressing the filter 6 are stretched on diagonal lines of the filter holding frame, so that each frame member 11 is urged in the contracting direction. Therefore, the coil spring 3 for pressing the filter also serves as a means for holding the main body frame 1 in a predetermined size, and the number of parts is saved. Moreover, even when the frame members 11 on the four sides are all configured to be expandable and contractible, by arranging the pair of coil springs 3 on the diagonal line,
The length of the four frame members 1 can be fixed by the pair of coil springs 3.

[Brief description of drawings]

FIG. 1 is a plan view of a range hood filter holding frame to which the present invention is applied.

FIG. 2 is an enlarged view of a II-II section of FIG.

3 is an enlarged cross-sectional view taken along the line III-III of FIG.

FIG. 4 is an exploded partial perspective view of a frame member.

5 is an exploded perspective view of the range hood filter holding frame of FIG. 1. FIG.

FIG. 6 is a schematic cross-sectional view of the filter holding frame showing a state where the filter holding frame is attached to the range hood.

[Explanation of symbols]

1 body frame 3 Coil spring for filter holder 11 Frame member 12 First mold material 13 Second mold material 15, 16 slide groove 20 Engagement hole 21 Protrusion

Claims (2)

(57) [Claims] 1. In a rectangular range hood filter holding frame, at least two frame members on opposite sides are length-adjustable by fitting and connecting two mold members so as to be slidable in the length direction. , One mold material is formed with a plurality of engaging holes at predetermined intervals in the length direction, and the other mold material is formed with a protrusion engageable with the engaging hole, and the protrusion is selected as the engaging hole. Filter holder frame for a range hood, characterized in that the frame member is fixed to a predetermined length by positively engaging both mold members in the contracting direction with a spring. 2. A pair of the springs are provided and are stretched in a cross shape on a diagonal line of a filter holding frame so as to urge each frame member in the contracting direction and press the filter surface. The filter holding frame for the range hood according to claim 1.