Automatic door system

Abstract

To provide an automatic door device which has a compact structure for use in various types of currently existing frames, which can reduce the effects of salt damage, and whose structure is easy to maintain.SOLUTION: To solve the above problem, an automatic door device is configured to include a door which can open and close freely when guided along a rail portion, an electric motor which causes the door to move along the rail portion, a control unit which controls the electric motor, a power transmission mechanism which transmits the power of the electric motor to the door for opening and closing the door, a first protective member which protects the control unit, a fixing member for fixing the first protective member in an installation location, and a second protective member which protects the fixing member, the first protective member and the second protective member being fixed to the installation location by the fixing member.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an automatic door system. [Background technology]

[0002] The speed at which automatic door systems break down and deteriorate depends on the installation environment. Automatic door systems installed in stores and buildings along the coast or on remote islands are more susceptible to rust caused by salt damage and resulting breakdowns than in other installation locations. Furthermore, after receiving an order, it may be discovered that the installation location is in a salt-damaged area, in which case salt damage countermeasures may be required after installation of standard products. As a countermeasure against salt damage, for example, Patent Document 1 proposes a structure for air conditioners, but there is also a strong demand for countermeasures against salt damage for automatic door systems. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-181951 Summary of the Invention [Problem to be solved by the invention]

[0004] As mentioned above, when salt damage countermeasures are implemented on standard automatic door systems, the system structure may be larger than the standard door frame size. While various salt damage countermeasures can be implemented if there is ample installation space, implementing salt damage countermeasures can be difficult when there is limited installation space. Generally, door frame sizes are standard across manufacturers, and frames with specifications determined by the store or building are selected. For this reason, there is a demand for a structure that can implement salt damage countermeasures at a size similar to that of automatic door systems used with standard frame sizes. Furthermore, if the structure for preventing salt damage becomes complicated, it may become difficult to replace parts that have deteriorated over time.

[0005] In order to solve these problems, the inventors aim to provide an automatic door system with a compact structure that can be used with various current frame types, that can reduce the effects of salt damage, and that is easy to maintain. [Means for solving the problem]

[0006] In order to solve the above problems, one form of the automatic door device of the present invention comprises a door that is guided by a rail portion and can be opened and closed freely, an electric motor that moves the door along the rail portion, a control unit that controls the electric motor, a power transmission mechanism that transmits the power of the electric motor to the door to open and close the door, a first protective member that protects the control unit, a fixing member that fixes the first protective member to an installation location, and a second protective member that protects the fixing member, and the first protective member and the second protective member are fixed to the installation location by the fixing member.

[0007] In the automatic door system according to one aspect of the present invention, the second protection member may include a frame member that surrounds the fixing member, and a cover member that closes an opening in the frame member.

[0008] In the automatic door system according to one aspect of the present invention, a waterproof member may be disposed between the first protection member and the fixing member.

[0009] In one form of the automatic door device of the present invention, the power transmission mechanism may be configured to include a hanging door roller for supporting the door so that it can be opened and closed freely relative to the rail portion, and a cover member for protecting the bearing of the hanging door roller.

[0010] In one form of the automatic door system of the present invention, a power switch may be configured to include a switch body, a connection protection member that covers the connection between the switch body and the wiring connected to the switch body, an insulating sealant filled inside the connection protection member, and a switch cover that covers the switch body.

[0011] In the automatic door system according to one aspect of the present invention, the first protective member, the second protective member, and the fixing member may be subjected to a composite surface treatment. [Effects of the Invention]

[0012] According to the above-described aspects of the present invention, it is possible to suppress the effects of salt damage on an automatic door system. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 shows an automatic door device in a fully closed state. [Figure 2] FIG. 2 shows an automatic door device in a fully open state. [Figure 3] FIG. 3 is a plan view showing the first protective member and its surrounding structure. [Figure 4] FIG. 4 is a plan view showing the first protective member and the second protective member. [Figure 5] FIG. 5 is a cross-sectional view taken along line VV in FIG. [Figure 6] FIG. 6 is an enlarged side cross-sectional view showing a main part of FIG. [Figure 7] FIG. 7 is an enlarged plan view showing the main part of FIG. [Figure 8] FIG. 8 is a diagram showing the configuration of a rotating part of a hanging door roller. [Figure 9] FIG. 9 is a diagram showing the configuration of the power switch. [Figure 10] FIG. 10 is a diagram showing a conventional collective protection member. DETAILED DESCRIPTION OF THE INVENTION

[0014] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0015] <Embodiment> (Overall configuration of automatic door systems) First, the overall configuration of an automatic door system 1 according to one embodiment of the present invention will be described with reference to Figures 1 and 2. Figure 1 shows the automatic door system 1 in a fully closed state. Figure 2 shows the automatic door system 1 in a fully open state. Figure 3 is a plan view showing the first protective member 23 and its surrounding structure. Figure 4 is a plan view showing the first protective member 23 and the second protective member 25. Figure 5 is a cross-sectional view taken along line VV in Figure 4. Figure 6 is a side cross-sectional view showing an enlarged view of the main parts of Figure 5. Figure 7 is a plan view showing an enlarged view of the main parts of Figure 5. Figure 8 is a view showing the configuration of the rotating part 36 of the hanging door rollers 34A and 34B. Figure 9 is a view showing the configuration of the power switch 40. Figure 10 is a view showing a conventional collective protective member 90.

[0016] As shown in Figures 1 and 2, the automatic door device 1 of this embodiment is installed on the exterior wall of an entrance to a store or building, and is equipped with a door 10, an actuator unit 20, a power transmission mechanism 30, and a power switch 40.

[0017] The door 10 is a door that can be freely opened and closed while being guided by a rail portion 33 described later, and includes a door panel 11 made of glass or the like, and a panel frame member 12 that holds the periphery of the door panel 11. The door panel 11 is a panel that opens and closes the entrance to a store or building by moving in an opening direction (in the direction of the arrow 100) or a closing direction (in the direction opposite to the arrow 100). The opening and closing operation of the door panel 11 is performed by the power of an electric motor 21.

[0018] The actuator unit 20 includes an electric motor 21 and a control unit 22 that controls the electric motor 21, and the door 10 can be opened or closed by changing the rotation direction of the electric motor 21 using the control unit 22.

[0019] 3, 4, and 5, the actuator unit 20 of this embodiment includes a first protective member 23 for protecting the control unit 22 shown in Figures 1 and 2, a pair of fixing members 24 for fixing the first protective member 23 to the outer wall, and second protective members 25 for protecting each of these fixing members 24. In this embodiment, the first protective member 23 and the second protective member 25 are provided as a measure against salt damage and waterproofing for the control unit 22 and the pair of fixing members 24.

[0020] The first protective member 23 is a protective member that covers the entire control unit 22 and has, for example, a U-shape in cross section. The first protective member 23 is attached so as to cover the control unit 22 from the opening side. The first protective member 23 is made of, for example, aluminum.

[0021] The pair of fixing members 24 are disposed on both longitudinal sides of the first protective member 23. Each fixing member 24 includes an L-shaped fixing plate 24a, a plurality of screws 24b, and a plurality of sets of bolts 24ac and nuts 24ad. The fixing plate 24a has a first surface 24aa that is fixed to the side end surface 23b of the first protective member 23, and a second surface 24ab that is fixed to the outer wall. A through-hole (not shown) is formed in the first surface 24aa, through which wiring and the like connected to the control unit 22 inside the first protective member 23 are inserted. The fixing members 24 are made of, for example, steel.

[0022] The multiple screws 24b are used to fix the first surface 24aa side of the fixing plate 24a to each side end surface 23b on both longitudinal sides of the first protective member 23. The three sets of bolts 24ac and nuts 24ad are used to fix the second surface 24ab side of the fixing plate 24a to the exterior wall of a store, building, etc., and are attached into three grooves 24ae formed in the second surface 24ab of the fixing plate 24a. The number of grooves 24ae and the numbers of bolts 24ac and nuts 24ad can be set as appropriate.

[0023] The pair of second protective members 25 are detachably attached to a store or building. As shown in Figures 6 and 7, each second protective member 25 has a frame member 25a that surrounds the periphery of each fixing member 24 and a lid member 25b that is detachably attached to the frame member 25a. The frame member 25a has two openings 25aa and 25ab that face perpendicular to each other, one opening 25aa is closed by the lid member 25b, and the other opening 25ab is closed by the side end surface 23b of the first protective member 23. A plurality of through holes 25f are formed in a bottom plate 25e of the frame member 25a, through which the bolts 24ac are inserted.

[0024] The size of the bottom plate 25e in plan view is approximately one size larger than the size of the second surface 24ab of the fixing member 24 in plan view.

[0025] Lid member 25b is large enough to close one opening 25aa of frame member 25a, and is screwed to frame member 25a with a pair of screws 25c. Measures to protect against salt damage and waterproofing are provided between lid member 25b and frame member 25a. Specifically, lid member 25b is attached to frame member 25a via rubber plate 25d. This rubber plate 25d is elastically deformed by tightening screws 25c, allowing lid member 25b to be attached to frame member 25a without creating a gap between it and frame member 25a.

[0026] The cover member 25b has a rectangular shape in a plan view, and the length in the longitudinal direction thereof is approximately the same as the length in the short side direction (width direction) of the first protection member 23. The frame member 25a and the cover member 25b of this embodiment are made of, for example, aluminum.

[0027] In this embodiment, salt damage and waterproofing measures are also taken between the other opening 25ab side of the second protective member 25 and the first protective member 23. Specifically, a portion of the frame member 25a is attached so as to overlap with a portion of the outer peripheral wall of the first protective member 23, and a sealant 27 is applied to fill the gap between them. Alternatively, double-sided tape may be used.

[0028] A rubber bushing 26 is provided on the side surface of the second protective member 25 (the side opposite to the other opening in the short direction), through which wires and the like connected to the control unit 22 are inserted. The rubber bushing 26 is preferably used for wires that require measures against salt damage and waterproofing.

[0029] In this embodiment, the second protection member 25 is detachably attached to the store or building. Alternatively, it is preferable that at least the cover member 25b is detachable from the frame member 25a. This makes maintenance work easier.

[0030] The power transmission mechanism 30 transmits the power of the electric motor 21 to the door 10 to open or close the door 10. The power transmission mechanism 30 includes a drive roller 31A, a driven roller 31B, a conveyor belt 32 stretched across the pair of rollers 31A, 31B, a rail portion 33 that guides the door 10 in the opening and closing direction, and a pair of hanging door rollers 34A, 34B that are movable along the rail portion 33.

[0031] 1 and 2, the door 10 is suspended from a rail portion 33 by a pair of hanging door rollers 34A, 34B. At least one of the pair of hanging door rollers 34A, 34B is connected to a conveyor belt 32 that rotates by the power of an electric motor 21. In this embodiment, the hanging door roller 34A is connected to the conveyor belt 32 via a connecting member 34a. With this configuration, the door 10 opens and closes along the rail portion 33 in accordance with the rotation of the conveyor belt 32.

[0032] As shown in FIG. 8, the hanging door rollers 34A, 34B each have a connecting member 35 fixed to the upper end of the door 10, and two rotating portions 36 provided on both sides of the connecting member 35 in the width direction. The rotating portion 36 includes a rotating shaft portion 36a extending in a depth direction perpendicular to the opening / closing direction and the up-down direction of the door 10, a rotating engagement portion 36b engaging with the rail portion 33, a bearing 36c arranged between the rotating shaft portion 36a and the rotating engagement portion 36b, and a cap 36d that protects the bearing 36c by covering the side of the bearing 36c opposite to the first connecting member 35 in the direction in which the rotation axis O of the bearing 36c extends, and is configured so that the rotating engagement portion 36b is rotatable around the axis of the rotation axis O.

[0033] The cap 36d is inserted into a recess 36e formed in the rotational engagement portion 36b. A surface 36da of the cap 36d inserted into the recess 36e matches the surface 36da of the rotational engagement portion 36b. This results in a flat surface with no step between the surface 36da of the cap 36d and the surface 36da of the rotational engagement portion 36b, and does not affect the fit.

[0034] The cap 36d has an outer diameter larger than the diameter of the through-hole 36f that penetrates the center of the rotational engagement portion 36b. By providing the resin cap 36d so that it fits into the recess 36e of the rotational engagement portion 36b, it is less likely that a gap will form between the rotational engagement portion 36b and the cap 36d. An adhesive or sealant may also be applied to the outer peripheral wall of the cap 36d.

[0035] As shown in FIG. 9, the power switch 40 has a switch body 41, a plurality of wires 42a, 42b connected to the switch body 41, and a connection point protection member 43 that covers and protects the connection points (connection terminals 46a, 46b) between the plurality of wires 42a, 42b and the switch body 41.

[0036] The connection portion protection member 43 is a heat-shrinkable tube that covers the connection terminals 46a and 46b and is then heated and deformed to fit the outer shapes of the switch body 41 and the connection terminals 46a and 46b.

[0037] In this embodiment, an insulating sealant 44 is filled inside the connection portion protection member 43 as a measure against salt damage and waterproofing. The insulating sealant 44 is filled inside the connection portion protection member 43 without leaving any gaps so as to surround the periphery of the connection portions between the plurality of wirings 42a, 42b and the switch body 41.

[0038] Furthermore, the switch portion 41a of the switch body 41, which is operated by a person, is exposed to the outside. Therefore, a switch cover 45 is provided to cover the switch portion 41a as a measure to protect the switch portion 41a from salt damage and to protect it from water. The switch cover 45 is made of a transparent or semi-transparent resin that can be deformed by a person's ON / OFF switching operation.

[0039] (Opening and closing operation of automatic door devices) In the automatic door system 1 of this embodiment, when the electric motor 21 is rotated forward in response to an opening command from the control unit 22, the drive roller 31A rotates, for example, clockwise, causing the conveyor belt 32 to rotate clockwise. As a result, the door 10 connected to the conveyor belt 32 moves in the opening direction (the direction of the arrow 100), thereby opening the entrance to the store or building.

[0040] On the other hand, when the electric motor 21 of the automatic door system 1 is reversed by a closing command from the control unit 22, the drive roller 31A rotates counterclockwise, for example, causing the conveyor belt 32 to rotate counterclockwise. As a result, the door 10 connected to the conveyor belt 32 moves in the closing direction (opposite the direction of the arrow 100), thereby closing the entrance to the store or building.

[0041] In the automatic door system 1 of this embodiment, second protective members 25 are provided on both longitudinal sides of the first protective member 23 that protects the control unit 22. These second protective members protect the fixing members 24 that fix the first protective member 23 to the building or the like, providing salt damage and waterproofing protection for not only the control unit 22 but also the fixing members 24. The combined longitudinal length L1 (FIG. 4) of the first protective member 23 and the pair of second protective members 25 is shorter and more compact than the length L2 of the collective protective member 90 shown in FIG. 10 that has been used in a conventional salt damage and waterproofing protection measure. This allows for easy installation even in cases where the automatic door system 1 does not have sufficient installation space. On the other hand, the conventional collective protective member 90 is composed of a protective portion 91 that is large enough to cover the first protective member 23 and the pair of fixing members 24 at once, and a pair of fixing plate portions 92 that extend further out on both longitudinal sides of the protective portion 91. The total length L2 of the collective protective member 90 is greater than the combined length L1 of the first protective member 23 and the pair of second protective members 25 of this embodiment. Therefore, if there is not enough space to install the automatic door system 1, the installation work is difficult.

[0042] The door frames that are pre-installed at the installation location of the automatic door system 1 are standard sizes for all manufacturers, but with the configuration of this embodiment, salt damage and waterproofing measures can be implemented without significantly changing the size of the automatic door system used in a standard door frame. This means that even if it is discovered after receiving an order that the installation will be near the coast, salt damage measures can be implemented on the standard product without worrying about installation space.

[0043] In the automatic door device 1 of this embodiment, a pair of second protective members 25 are provided in addition to the first protective member 23, so the fixed member 24 can be easily exposed by attaching or detaching the cover member 25b or frame member 25a, making it easy to replace parts or rewire the control unit 22, and improving workability.

[0044] In the automatic door device 1 of this embodiment, measures to protect the control unit 22 from salt damage and waterproofing can be easily taken by using a sealant (waterproof material) 27 or double-sided tape (waterproof material) between the first protective member 23 and the second protective member 25. In addition, in this embodiment, in the second protective member 25, a rubber plate 25d having a thickness of about 1 mm is interposed between the frame member 25a and the lid member 25b to fill the gap, thereby providing measures against salt damage and waterproofing.

[0045] In the automatic door system 1 of this embodiment, the hanging door rollers 34A, 34B use bearings 36c to support the load of the door 10 and move it open and closed. Shielded bearings are used in hanging door rollers for regular automatic door systems, but because they are made of steel, corrosion can occur on the bearing surface and rotating shaft due to wear. Stainless steel bearings are also available, but because they have different characteristics from regular bearings, their load-bearing capacity may differ from that of steel hanging door rollers.

[0046] Therefore, in this embodiment, the hanging door rollers 34A, 34B use caps 36d made of the same resin material as the rotational engagement portions 36b of the respective rotational portions 36.

[0047] In this way, the cap 36d protects the surface of the bearing 36c and the tip end of the rotating shaft portion 36a by covering them, and a structure can be created in which there is no difference in performance values ​​(load capacity, etc.) compared to existing salt damage prevention products.

[0048] Regarding the bearing 36c, some have a shield made of rubber, but since the rotational engagement portion 36b and the rotational shaft portion 36a are made of steel, the bearing 36c is covered with a cap 36d. Furthermore, the rotary shaft portion 36a may be crimped for assembly purposes, but in this case too, the use of the cap 36d is more effective in protecting it from salt damage.

[0049] The automatic door system 1 of this embodiment uses a commonly used rocker switch as the power switch 40. Problems with this type of power switch 40 include corrosion at the connection between the switch body 41 and the connection terminals 46a and 46b, and malfunctions caused by water entering the switch body 41. Existing waterproof switches are large in size and require special mounting hardware, and there are only a few of them on the market, which means the cost per part is high.

[0050] Therefore, in this embodiment, measures against salt damage and waterproofing have been taken against a typical rocker switch used in a typical automatic door system. Specifically, as described above, the connection points between the switch body 41 and the connection terminals 46a, 46b in the power switch 40 are covered with the connection point protection member 43, and the inside of this is tightly filled with the insulating sealant 44. This makes the power switch 40 inexpensive and resistant to corrosion.

[0051] The metal fittings (e.g., the fixing plate 24a), bolts (e.g., the bolts 24ac and nuts 24ad) used in the automatic door system 1 of this embodiment are subjected to a composite surface treatment. Examples of composite surface treatments include proprietary salt damage prevention surface treatments such as Disgo (registered trademark) and Ruspert (registered trademark), or commercially available surface treatment agents used to form an anti-rust coating on the metal surface. By applying a composite surface treatment to metal fittings, bolts, etc., high corrosion resistance can be imparted.

[0052] Generally, it is possible to use stainless steel (SUS) for the metal fittings and bolts used in the automatic door system 1, but since aluminum is widely used in the automatic door system 1, there is a possibility of corrosion occurring between the different metals. Also, when it comes to metal fittings, many products are made using molds, and in such cases, it may be necessary to create separate molds for the stainless steel components.

[0053] Therefore, by applying composite surface treatment to existing parts, etc., there will be no need for parts with different shapes due to the shift to stainless steel, which will make it easier to replace parts during maintenance after the automatic door is installed.

[0054] Furthermore, compared to painting and the like, surface treatment can be performed as a thin film, which has the advantage of not affecting the precision of the fit between parts. In this way, it is possible to carry out the same quality control as for normal automatic door systems.

[0055] As described above, according to this embodiment, it is possible to provide an automatic door system 1 with a compact structure that can be used with various current frame types, that can reduce the effects of salt damage, and that is easy to maintain.

[0056] Although the preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to these examples. It is clear that a person skilled in the art to which the present invention pertains can conceive of various modifications and alterations within the scope of the technical ideas set forth in the claims, and it is understood that these also naturally fall within the technical scope of the present invention.

[0057] For example, the automatic door system 1 of the above embodiment is not limited to being installed on the outer wall of a store or building, but may also be installed on the inner wall of a store or building. Furthermore, the structure of the hanging door rollers 34A, 34B and their surroundings is not limited to the configuration shown in the drawings, and can be modified as appropriate. [Explanation of symbols]

[0058] 1...automatic door device, 10...door, 21...electric motor, 22...control unit, 23...first protective member, 24...fixing member, 25...second protective member, 25a...frame member, 25aa, 25ab...opening, 25b...cover member, 27...sealant (waterproof member), 30...power transmission mechanism, 33...rail portion, 34A...hanging door roller, 36da...surface, 36c...bearing, 40...power switch, 41...switch body, 42a...wiring, 43...connection point protective member, 44...insulating sealant, 45...switch cover, 91...protective portion

Claims

1. A door that can be opened and closed freely by being guided by a rail, an electric motor that moves the door along the rail portion; a control unit that controls the electric motor; a power transmission mechanism that transmits power from the electric motor to the door to open and close the door; a first protective member for protecting the control unit; a fixing member for fixing the first protection member to an installation location; a second protective member that protects the fixing member, The first protective member and the second protective member are fixed to the installation location by the fixing member. Automatic door device.

2. The second protective member is a frame member surrounding the fixing member; a cover member that closes the opening of the frame member, The automatic door system according to claim 1.

3. a waterproof member is disposed between the first protective member and the fixing member; 3. The automatic door system according to claim 1 or 2.

4. The power transmission mechanism includes: a hanging door roller for supporting the door so that the door can be opened and closed movably relative to the rail portion; A cover member that protects the bearing of the hanging door roller is provided. The automatic door system according to any one of claims 1 to 3.

5. The switch body and a connection portion protection member for covering a connection portion between the switch body and a wiring connected to the switch body; an insulating sealant filled inside the connection portion protection member; a switch cover that covers the switch body; and a power switch having the switch cover. The automatic door system according to any one of claims 1 to 4.

6. The first protective member, the second protective member, and the fixing member are subjected to a composite surface treatment. The automatic door system according to any one of claims 1 to 5.

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