CN214664252U

CN214664252U - Aluminum section lamp

Info

Publication number: CN214664252U
Application number: CN202120454958.3U
Authority: CN
Inventors: 刘泽山
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2021-11-09
Anticipated expiration: 2031-03-03

Abstract

The utility model discloses an aluminium alloy lamps and lanterns, a serial communication port, including H type aluminium alloy, hanging, spring card, wherein, H type aluminium alloy's middle part baffle is separated it for the line case on upper portion and the lamp house of lower part, and the lower surface of middle part baffle is provided with the lamp strip groove of a plurality of installation lamp strip, and the direct cartridge of lamp strip is at the lamp strip inslot to support fixedly through the spring card. The utility model has the advantages that: separate H type aluminium alloy for the line case on upper portion and the lamp house of lower part, will walk line and install the lamp body part mutual isolation, the security is higher, also more pleasing to the eye, simultaneously, the lamp strip passes through the spring card installation back, simple to operate, and it is more convenient to maintain, has solved lamp strip installation, the maintenance problem among the prior art.

Description

Aluminum section lamp

Technical Field

The utility model relates to an aluminium alloy lamps and lanterns.

Background

LED lamps are widely used because of their safety, no pollution, less energy consumption than incandescent lamps of the same luminous efficacy, and the ability to change various colors. LED light fixtures are typically mounted by a base.

The existing base is a part which is generally processed by adopting a sheet metal structure through means of stamping, bending, stretching and the like, and the manufacturing process is complex.

The LED lamp strip is generally installed on the base through the clamping groove, the clamping groove for installing the LED lamp strip needs to be machined on the base, the machining process is complex, and especially different clamping grooves need to be arranged for different lamp strips, so that the difficulty in use and installation is caused.

These lamps and lanterns section bar mechanisms among the prior art all have the installation inconvenient, butt joint unattractive, hoist and mount inconvenient, the inconvenient scheduling problem of electric wire construction.

SUMMERY OF THE UTILITY MODEL

Problem to prior art existence, the utility model aims to provide a structure, function process modified aluminium alloy lamps and lanterns.

In order to achieve the above object, the utility model relates to an aluminum profile lamps and lanterns, including H type aluminum profile, hanger, spring card, wherein, H type aluminum profile's middle part baffle is separated it for the line case on upper portion and the lamp house of lower part, and the lower surface of middle part baffle is provided with the lamp strip groove of a plurality of installation lamp strip, and the direct cartridge of lamp strip is at the lamp strip inslot to support fixedly through the spring card.

Further, the spring clamp comprises a main support plate, a first side support plate and a second side support plate, wherein the first side support plate and the second side support plate are directly manufactured by extending from two ends of the main support plate, and the first side support plate is of a straight plate structure; the second side supporting plate is of a straight plate structure, and the end part of the second side supporting plate is provided with an elbow.

Further, a left assistant arm is arranged between the middle partition plate and the left side plate of the H-shaped aluminum profile, and the left assistant arm is provided with a left positioning step; a right assistant arm is arranged between the middle partition plate and the right side plate of the H-shaped aluminum profile, and the right assistant arm is provided with a right positioning step; the first side supporting plate and the left assistant arm are arranged at the same angle, and the end part of the first side supporting plate is supported on the left positioning step; the installation angles of the second side supporting plate and the right coordination arm are the same, and the elbow is supported on the right positioning step; when the two ends of the spring clamp are clamped on the left positioning step and the right positioning step respectively, the spring clamp is fixedly arranged on the H-shaped aluminum section, and the main support plate is positioned at the lower part of the middle partition plate, so that the lamp strip positioned in the lamp strip groove is fixedly arranged.

Furthermore, box piece clamping grooves are symmetrically formed in the lower opening of the H-shaped aluminum profile, and lamp box pieces are inserted into the box piece clamping grooves; a hanging piece connecting clamping groove is formed in the upper opening of the H-shaped aluminum profile, and a clamping piece at the end of the hanging piece is installed in a matching manner with the hanging piece connecting clamping groove; after the hanging piece is installed, the connecting part between the hanging piece and the upper opening is hidden in the wire box.

Further, the case piece draw-in groove is U type draw-in groove, and it sets up respectively on the inboard of H type aluminium alloy's left side board, right side board, the opening of two U type draw-in grooves sets up relatively, the both ends of lamp case piece all are provided with horizontal folding type dop, and this dop adaptation is installed in the U type draw-in groove.

Further, in the range of the lamp box, inner connecting clamping grooves are formed in the inner sides of the left side plate and the right side plate, and a plurality of lamps are combined and fixed into a long combined lamp through connecting pieces arranged in the inner connecting clamping grooves; the internal connection clamping groove is a T-shaped groove, a plurality of screw holes are formed in the connecting piece, and after the screws are installed on the connecting piece, the screw caps of the screws are pressed on the groove walls of the T-shaped groove, so that the connecting piece and the internal connection clamping groove are fixedly installed.

Further, the hanging piece comprises a hanging plate, a left clamping piece and a right clamping piece which are integrally formed, a hanging rod hole is formed in the middle of the hanging plate, and the left clamping piece and the right clamping piece are respectively arranged at two end parts of the hanging plate; the hanging piece connecting clamping groove comprises a left connecting clamping groove and a right connecting clamping groove; the left clamping piece is installed with the left connecting clamping groove in a matched mode, and the right clamping piece is installed with the right connecting clamping groove in a matched mode.

Further, the left clamping piece is formed by extending the hanging plate, the left clamping piece is a first vertical clamping groove, and the edge of one end of the hanging plate is bent downwards, then bent outwards horizontally and then bent upwards to form a first vertical clamping groove with an upward opening; the right clamping piece is made by extending the hanging plate, the right clamping piece is a horizontal clamping groove, and the edge of the other end of the hanging plate is bent downwards and then bent inwards horizontally to form a first horizontal clamping groove with an inward opening.

Further, the left connecting clamping groove is a second vertical clamping groove, the second vertical clamping groove comprises a first vertical plate, a first horizontal plate extending inwards from the upper end of the first vertical plate, a second vertical plate extending downwards from the first horizontal plate in a bending mode, and a second horizontal plate extending inwards from the lower end of the first vertical plate, and a vertical space is arranged between the lower end of the second vertical plate and the second horizontal plate.

Further, the right connecting clamping groove is a second horizontal clamping groove, the second horizontal clamping groove comprises a third vertical plate, a third horizontal plate extending inwards from the lower end of the third vertical plate, a fourth vertical plate extending upwards from the third horizontal plate in a bending mode, and a fourth horizontal plate extending outwards from the fourth vertical plate, and a horizontal space is arranged between the outer end of the fourth horizontal plate and the third vertical plate.

The utility model has the advantages that: separate H type aluminium alloy for the line case on upper portion and the lamp house of lower part, will walk line and install the lamp body part mutual isolation, the security is higher, also more pleasing to the eye, simultaneously, the lamp strip passes through the spring card installation back, simple to operate, and it is more convenient to maintain, has solved lamp strip installation, the maintenance problem among the prior art.

Drawings

FIG. 1 is a schematic structural cross-sectional view of the present invention;

FIG. 2 is a schematic structural section view of an H-shaped aluminum profile;

FIG. 3 is a schematic structural section view of a spring clip arranged on an H-shaped aluminum section;

FIG. 4 is a schematic view of a connector structure;

FIG. 5 is a schematic top view of the hanger;

FIG. 6 is a schematic cross-sectional view of a hanger construction;

FIG. 7 is a schematic cross-sectional view of a light transmissive sheet construction;

fig. 8 is a schematic view of a spring plate structure.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

As shown in fig. 1 to 8, the utility model relates to an aluminum profile lamp, including H type aluminum profile 1, hang 2, spring card 16, wherein, H type aluminum profile 1's middle part baffle 3 separates it for line case 4 on upper portion and lamp house 5 of lower part, and line case 4 is used for installing all electric wires or other auxiliary assembly of lamps and lanterns, and lamp house 5 is used for installing LED lamp strip. The volume of the lamp box 5 is slightly larger than that of the wire box 4, so that better lighting space and heat dissipation performance are increased.

The lower surface of the middle partition plate 3 is provided with a plurality of light bar grooves 6 for mounting the light bars 34, the light bar grooves 6 are long-strip-shaped grooves, and the light bar grooves 6 are of non-clamping groove structures and are of straight-through structure types, so that the light bar grooves are easier to process and mount.

The light bar 34 is directly inserted into the light bar groove 6 and is supported and fixed by the spring clip 16. In this embodiment, a plurality of light bar grooves 6 are provided, a plurality of light bars 34 are provided in the lamp, the number of the light bar grooves 6 and the number of the light bars 34 can be adjusted according to the use requirement, and the whole size of the lamp can be set and planned. The lamp strip groove 6 and the middle partition plate 3 are integrally arranged and are integrally made of aluminum profiles, so that the LED lamp strip has very good heat dissipation performance, the lamp strip 34 is generally an LED lamp strip, and heat generated in the use process is directly dissipated through a frame structure of an H-shaped aluminum profile. The spring clip 16 includes a main support plate 161, a first side support plate 162, and a second side support plate 163, wherein the first side support plate 162 and the second side support plate 163 are directly extended from two ends of the main support plate 161, the first side support plate 162 is a straight plate structure, the second side support plate 163 is a straight plate structure, and the end portions are provided with elbows 164.

A left assistant arm 33 is arranged between the middle partition plate 3 and the left side plate 9 of the H-shaped aluminum section bar 1, and the left assistant arm 33 is provided with a left positioning step 39. A right coordination arm 40 is arranged between the middle partition plate 3 and the right side plate 10 of the H-shaped aluminum section bar 1, and a right positioning step 41 is arranged on the right coordination arm 40. The first side support plate 162 is installed at the same angle as the left coordination arm 33, and the end of the first side support plate 162 is supported on the left positioning step 39; the second side support plate 163 is installed at the same angle as the right linkage arm 40, and the elbow 164 is supported on the right positioning step 41. When the two ends of the spring clip 16 are respectively clipped on the left positioning step 39 and the right positioning step 41, the spring clip 16 will be fixedly mounted on the H-shaped aluminum profile 1, and the main supporting plate 161 will be located at the lower part of the middle partition 3, so as to fixedly mount the light bar 34 in the light bar groove 6.

When the light bar 34 is installed, the light bar 34 is placed in the light bar groove 6, and then the spring clip 16 is installed. When the spring clip 16 is installed, the end of the first side supporting plate 162 is firstly supported and clamped on the left positioning step 39, the spring clip 16 is of a sheet structure and has a certain elastic force, and the end of the second side supporting plate 163 is arranged to be the elbow 164, so that the spring clip can slide into the right positioning step 41 through the elbow 164, and the installation work is simplified. During the integral installation, according to the whole length of lamps and lanterns, can guarantee the fastness of lamp strip 34 installation at a plurality of spring card 16 of 1 installation of H type aluminium alloy.

The lower port of the H-shaped aluminum profile 1 is symmetrically provided with light-transmitting sheet clamping grooves 8, and light-transmitting sheets 11 are inserted into the light-transmitting sheet clamping grooves 8. The printing opacity piece draw-in groove 8 is U type draw-in groove, and it sets up respectively on the inboard of left side board 9, right side board 10 of H type aluminium alloy 1, and the opening of two U type draw-in grooves sets up relatively, and the both ends of printing opacity piece 11 all are provided with cross-folding type dop 12, and dop 12 adaptation is installed in the U type draw-in groove of printing opacity piece draw-in groove 8. The light-transmitting sheet 11 is made of acrylic material, and the clamps 12 at both ends are integrally formed. After the light-transmitting sheet 11 is installed, the lower surface of the light-transmitting sheet is flush with the end face of the lower opening of the H-shaped aluminum section bar 1, so that the integral flatness of the lower surface of the lamp is guaranteed.

In the range of the lamp box 5, inner connecting clamping grooves 13 are formed in the inner sides of the left side plate 9 and the right side plate 10, the inner connecting clamping grooves 13 are T-shaped grooves, and the inner connecting clamping grooves 13 are used for installing connecting pieces 14. The connecting member 14 is provided with a plurality of screw holes 15, and after the screws are installed on the screw holes, the nuts of the screws are pressed on the wall of the T-shaped groove, so that the connecting member 14 and the inner connecting clamping groove 13 are fixedly installed. Screw holes 15 are provided at both ends of the connecting member 14, and in the present embodiment, two screw holes 15 are provided at both ends of the connecting member 14, respectively. Two ends of the connecting piece 14 are respectively inserted on two adjacent lamps to assemble the two adjacent lamps. A plurality of lamps are combined and fixed into a long combined lamp through installing connecting pieces 14 in the internal connecting clamping grooves 13. The utility model discloses lamps and lanterns can make up the combination lamps and lanterns for various length as required to the use to satisfy different use scenes. If the inner side of the left side plate 9 and the inner side of the right side plate 10 are provided with the inner connecting clamping grooves 13, the left positioning step 39 and the right positioning step 41 can be directly arranged on the upper end surfaces of the inner connecting clamping grooves 13, so that the structure of the product is simplified.

The upper opening of the H-shaped aluminum profile 1 is provided with a hanging piece connecting clamping groove, and the clamping piece at the end part of the hanging piece 2 is installed in a manner of being matched with the hanging piece connecting clamping groove. The hanging piece connecting clamping groove comprises a left connecting clamping groove 21 and a right connecting clamping groove 22. The hanging piece 2 comprises a hanging plate 17, a left clamping piece 18 and a right clamping piece 19 which are integrally formed, a hanging rod hole 20 is formed in the middle of the hanging plate 17, and the left clamping piece 18 and the right clamping piece 19 are respectively arranged at two end parts of the hanging plate 17; the left clamping piece 18 is installed with the left connecting clamping groove 21 in a matched mode, and the right clamping piece 19 is installed with the right connecting clamping groove 22 in a matched mode. In order to use the security, hang 2 and set up to waterproof material to form apron and hang the part that the piece unites two into one, hang 2 and set up in the upper mouth department of H type aluminium alloy 1, played hoist and mount, waterproof effect simultaneously.

Left joint spare 18 is for hanger plate 17 extension to make, and left joint spare 18 is first vertical draw-in groove, and hanger plate 17 one end edge is buckled downwards and is formed fifth vertical board 42, outwards horizontal bending again and forms fifth horizontal plate 35, upwards buckles again and forms sixth vertical board 36, forms the ascending first vertical draw-in groove of opening in the whole formation.

The right clamping piece 19 is formed by extending the hanging plate 17, the right clamping piece 19 is a horizontal clamping groove, and the edge of the other end of the hanging plate 17 is bent downwards to form a seventh vertical plate 37 and then bent inwards horizontally to form a sixth horizontal plate 38, so that the first horizontal clamping groove with an inward opening is integrally formed.

The left connecting clamping groove 21 is a second vertical clamping groove, the second vertical clamping groove comprises a first vertical plate 23, a first horizontal plate 24 extending inwards from the upper end of the first vertical plate 23, a second vertical plate 25 extending downwards from the first horizontal plate 24 in a bent manner, and a second horizontal plate 26 extending inwards from the lower end of the first vertical plate 23, and a vertical space 27 is arranged between the lower end of the second vertical plate 25 and the second horizontal plate 26. The left connecting clamping groove 21 is integrally formed by aluminum profiles.

The right connecting clamping groove 22 is a second horizontal clamping groove, the second horizontal clamping groove comprises a third vertical plate 28, a third horizontal plate 29 extending inwards from the lower end of the third vertical plate 28, a fourth vertical plate 30 extending upwards from the third horizontal plate 29 in a bending manner, and a fourth horizontal plate 31 extending outwards from the fourth vertical plate 30, and a horizontal space 32 is arranged between the outer end of the fourth horizontal plate 31 and the third vertical plate 28. The right connecting clamping groove 22 is integrally formed by aluminum profiles.

The first vertical clamping groove and the second vertical clamping groove are installed in a matched mode, after the first vertical clamping groove and the second vertical clamping groove are installed, a force bearing point in the vertical direction is arranged between the lower surface of the first horizontal plate 24 and the upper end face of the sixth vertical plate 36, a force bearing point in the vertical direction is arranged between the upper surface of the fifth horizontal plate 35 and the lower end face of the second vertical plate 25, and a force bearing point in the vertical direction is arranged between the upper surface of the sixth horizontal plate 38 and the lower surface of the fourth horizontal plate 31.

The vertical space 27 is used as an installation space of the left clamping piece 18, the distance between the lower end of the second vertical plate 25 and the second horizontal plate 26 is larger than the vertical size of the sixth vertical plate 36, and meanwhile, the second horizontal plate 26 is also used as a limiting structure of the left clamping piece 18 in the vertical direction, so that the lamp is convenient to install. Horizontal space 32 is as the installation space of controlling joint spare 19, and the interval between the outer tip of fourth horizontal plate 31 and the third vertical board 28 is greater than the horizontal dimension of sixth horizontal plate 38, and joint spare 19 is at the limit structure of horizontal direction also as controlling to the third vertical board 28 simultaneously, makes things convenient for the installation of lamps and lanterns.

After the hanger 2 is installed on the H-shaped aluminum profile 1, the upper surface of the hanger plate 17 is not higher than the upper surface of the first horizontal plate 24, that is, the upper surface of the hanger plate 17 is not higher than the upper opening end surface of the H-shaped aluminum profile 1, and after the hanger 2 is installed, the connection part between the hanger 2 and the upper opening of the H-shaped aluminum profile 1 is hidden in the wire box 4. So that the upper surface of the lamp is integrally smooth and beautiful.

In order to meet various use requirements, an external connecting clamping groove 7 can be further arranged at the upper opening of the H-shaped aluminum profile 1, and the external connecting clamping groove 7 is respectively arranged at the inner sides of the upper openings of the left side plate 9 and the right side plate 10. The external connection clamping groove 7 is of an unnecessary structure, but when the long combined lamp is installed, in order to increase the installation firmness, the external connection clamping groove 7 can be increased for reinforcement installation, and the external connection clamping groove 7 is internally installed with the outside through the connecting piece 14.

When being provided with external connection draw-in groove 7, left side connection draw-in groove 21, right side connection draw-in groove 22 set up respectively on the inside wall of external connection draw-in groove 7, and first vertical board 23, the vertical board 28 of third can be directly the vertical lateral wall of the inboard of external connection draw-in groove 7 this moment to simplify holistic structure. Similarly, when the upper opening of the H-shaped aluminum profile 1 is not provided with the external connecting clamping groove 7, the first vertical plate 23 can be directly a part of the left side plate 9, and the third vertical plate 28 can be directly a part of the right side plate 10, so that the whole structure is simplified. The above-mentioned structures are all made up by aluminium section bar in one body.

Claims

1. The utility model provides an aluminum profile lamp, its characterized in that includes H type aluminum profile, hangs piece, spring card, and wherein, H type aluminum profile's middle part baffle is separated it for the line case on upper portion and the lamp house of lower part, and the lower surface of middle part baffle is provided with the lamp strip groove of a plurality of installation lamp strip, and the direct cartridge of lamp strip is at the lamp strip inslot to support fixedly through the spring card.

2. An aluminum profile lamp as claimed in claim 1, wherein the spring clip comprises a main support plate, a first side support plate and a second side support plate, the first side support plate and the second side support plate are made by directly extending from two ends of the main support plate, wherein the first side support plate is of a straight plate structure; the second side supporting plate is of a straight plate structure, and the end part of the second side supporting plate is provided with an elbow.

3. The aluminum profile lamp as claimed in claim 2, wherein a left cooperation arm is arranged between the middle partition plate and the left side plate of the H-shaped aluminum profile, and the left cooperation arm is provided with a left positioning step; a right assistant arm is arranged between the middle partition plate and the right side plate of the H-shaped aluminum profile, and the right assistant arm is provided with a right positioning step; the first side supporting plate and the left assistant arm are arranged at the same angle, and the end part of the first side supporting plate is supported on the left positioning step; the installation angles of the second side supporting plate and the right coordination arm are the same, and the elbow is supported on the right positioning step; when the two ends of the spring clamp are clamped on the left positioning step and the right positioning step respectively, the spring clamp is fixedly arranged on the H-shaped aluminum section, and the main support plate is positioned at the lower part of the middle partition plate, so that the lamp strip positioned in the lamp strip groove is fixedly arranged.

4. The aluminum profile lamp as claimed in claim 1, wherein box piece clamping grooves are symmetrically formed in the lower opening of the H-shaped aluminum profile, and lamp box pieces are inserted into the box piece clamping grooves; a hanging piece connecting clamping groove is formed in the upper opening of the H-shaped aluminum profile, and a clamping piece at the end of the hanging piece is installed in a matching manner with the hanging piece connecting clamping groove; after the hanging piece is installed, the connecting part between the hanging piece and the upper opening is hidden in the wire box.

5. An aluminum profile lamp as claimed in claim 4, wherein the box piece clamping grooves are U-shaped clamping grooves which are respectively arranged on the inner sides of the left side plate and the right side plate of the H-shaped aluminum profile, the openings of the two U-shaped clamping grooves are oppositely arranged, and transverse folding type clamping heads are arranged at two ends of the lamp box piece and are fittingly arranged in the U-shaped clamping grooves.

6. The aluminum profile lamp as claimed in claim 1, wherein in the lamp box, inner connecting clamping grooves are formed in the inner sides of the left side plate and the right side plate, and a plurality of lamps are combined and fixed into a long combined lamp by installing connecting pieces in the inner connecting clamping grooves; the internal connection clamping groove is a T-shaped groove, a plurality of screw holes are formed in the connecting piece, and after the screws are installed on the connecting piece, the screw caps of the screws are pressed on the groove walls of the T-shaped groove, so that the connecting piece and the internal connection clamping groove are fixedly installed.

7. The aluminum profile lamp as recited in claim 1, wherein the hanging member comprises a hanging plate, a left clamping member and a right clamping member which are integrally formed, a hanging rod hole is formed in the middle of the hanging plate, and the left clamping member and the right clamping member are respectively arranged at two end portions of the hanging plate; the hanging piece connecting clamping groove comprises a left connecting clamping groove and a right connecting clamping groove; the left clamping piece is installed with the left connecting clamping groove in a matched mode, and the right clamping piece is installed with the right connecting clamping groove in a matched mode.

8. The aluminum profile lamp as claimed in claim 7, wherein the left clamping member is formed by extending the hanging plate, the left clamping member is a first vertical clamping groove, and one end edge of the hanging plate is bent downwards, then bent outwards and horizontally and then bent upwards to form a first vertical clamping groove with an upward opening; the right clamping piece is made by extending the hanging plate, the right clamping piece is a horizontal clamping groove, and the edge of the other end of the hanging plate is bent downwards and then bent inwards horizontally to form a first horizontal clamping groove with an inward opening.

9. The aluminum profile lamp as claimed in claim 8, wherein the left connecting clamping groove is a second vertical clamping groove, the second vertical clamping groove comprises a first vertical plate, a first horizontal plate extending inwards from the upper end of the first vertical plate, a second vertical plate extending downwards from the first horizontal plate in a bent manner, and a second horizontal plate extending inwards from the lower end of the first vertical plate, and a vertical space is arranged between the lower end of the second vertical plate and the second horizontal plate.

10. The aluminum profile lamp fitting as claimed in claim 9, wherein the right connecting clamping groove is a second horizontal clamping groove, the second horizontal clamping groove comprises a third vertical plate, a third horizontal plate extending inwards from the lower end of the third vertical plate, a fourth vertical plate extending upwards from the third horizontal plate in a bent manner, and a fourth horizontal plate extending outwards from the fourth vertical plate, and a horizontal space is arranged between the outer end of the fourth horizontal plate and the third vertical plate.