CN110869684B

CN110869684B - Door opening device and storage provided with same

Info

Publication number: CN110869684B
Application number: CN201880044457.9A
Authority: CN
Inventors: 中村英介; 米谷谅
Original assignee: Sharp Corp
Current assignee: Sharp Corp
Priority date: 2017-07-19
Filing date: 2018-02-20
Publication date: 2021-11-09
Anticipated expiration: 2038-02-20
Also published as: TWI664385B; WO2019016992A1; JP6965349B2; JPWO2019016992A1; TW201908676A; CN110869684A

Abstract

A door opening device for opening a door by moving a push-out member to push out the door, wherein a pinch preventing member for preventing a pinching of an intruding object between an opening into which the push-out member is drawn and the push-out member when the push-out member is exposed to the outside from the opening is provided.

Description

Door opening device and storage provided with same

Technical Field

The present invention relates to a door opening device that opens a door by moving a push member to push the door out, and a storage compartment such as a refrigerator including the same.

Background

As a door opener for opening and closing a door, a door opener that opens a door by moving a push member to push the door out has been known (for example, see patent document 1).

In such a door opening device, when the door is pushed out, the push-out member protrudes toward the door. The push-out member that protrudes and opens the door is pulled into the original standby position. When an intruding object such as a human finger intrudes into the retraction path of the push-out member when the push-out member is retracted, a problem occurs in that the intruding object is caught by the push-out member.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2010-25461

Disclosure of Invention

Technical problem to be solved by the invention

In this regard, patent document 1 does not consider any problem concerning the intrusion being caught by the pushing member when the pushing member is pulled in.

Therefore, an object of the present invention is to provide a door opening device that opens a door by moving a push-out member to push out the door and that can effectively prevent an intruding object from being caught by the push-out member when the push-out member is pulled in, and a storage container provided with the same.

Means for solving the problems

In order to solve the above-described problems, a door opening device according to the present invention is a door opening device that opens a door by moving a push-out member to push out the door, wherein a pinching prevention member for preventing an intrusion from being pinched between an opening into which the push-out member is drawn and the push-out member when the push-out member is exposed to the outside from the opening is provided between the opening and the push-out member when the push-out member is drawn into the opening. The storage according to the present invention is characterized by including the door opener according to the present invention.

Effects of the invention

According to the present invention, it is possible to effectively prevent an intruding object from being caught between the opening and the pushing member when the pushing member is pulled into the opening.

Drawings

Fig. 1 is a schematic front view showing an appearance of a refrigerator.

Fig. 2 is a schematic perspective view of a refrigerator shown in fig. 1, in which a refrigerating chamber door and a door opening device are taken out from the refrigerator.

Fig. 3 is a schematic perspective view of the refrigerator compartment door opened by the door opener shown in fig. 2, with the upper cover thereof removed, as viewed from obliquely above.

Fig. 4 is a schematic perspective view of the door opening device according to the first embodiment, as viewed obliquely from below, with the push-out member located at the standby position.

Fig. 5 is a schematic perspective view of the door opening device according to the first embodiment, as viewed from obliquely below, showing the push-out member moving in the push-out direction from the standby position.

Fig. 6 is a schematic perspective view showing a modification of the cover member in the door opening device according to the second embodiment, as viewed obliquely from below.

Fig. 7 is a schematic perspective view showing a modification of the cover member in the door opening device according to the second embodiment, as viewed obliquely from below.

Fig. 8 is a schematic perspective view showing a moving member portion of the door opener according to the third embodiment viewed obliquely from below.

Fig. 9 is a schematic perspective view showing a modification of the moving member in the door opening device according to the third embodiment, as viewed obliquely from below.

Fig. 10 is a schematic perspective view showing a modification of the moving member in the door opening device according to the third embodiment, as viewed obliquely from below.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same components are denoted by the same reference numerals. The names and functions of these are also the same. Therefore, detailed description thereof will not be repeated.

[ integral Structure of refrigerator ]

First, the overall structure of the refrigerator 1 including the door opening device 100 according to the first embodiment will be described. Fig. 1 is a schematic front view showing an appearance of a refrigerator 1.

As shown in fig. 1, a refrigerator 1 (an example of a storage room) includes a first refrigerating room 2 in an upper stage, a second refrigerating room 3 in a right side of the middle stage, a first freezing room 4 in a lower stage, and a second freezing room 5 in a left side of the middle stage. The first refrigerating compartment 2 is provided with refrigerating compartment doors 21(21a), 21(21b) (an example of a door) which are opened in two and divided left and right directions. A drawer-type refrigerating chamber door 31 is provided in the second refrigerating chamber 3. Drawer-type

freezer compartment doors

41, 51, and 52 are provided in the first freezer compartment 4 and the second freezer compartment 5, respectively. The doors are held in a closed state by magnets, not shown. Here, the left-right direction X is a direction (a lateral direction orthogonal to the vertical direction Z) of the left and right when the refrigerator 1 is viewed from the front in a state where the refrigerator 1 is placed on an installation surface. In the present specification, in the refrigerator 1, a surface provided with each door is referred to as a front surface of the refrigerator 1, and a surface of the refrigerator 1 opposite to the front surface is referred to as a rear surface. The front-rear direction Y is a direction between the front and rear surfaces of the refrigerator 1.

Thus, the refrigerator 1 is divided into an upper section, a middle section and a lower section, and each storage space is provided. In the first refrigerating chamber 2 disposed in the upper stage portion of the refrigerator 1, refrigerating chamber doors 21(21a) and 21(21b) are provided on the first refrigerating chamber 2 so as to be rotatable about a rotation axis along the vertical direction Z.

Door opening instruction portions 22(22a) and 22(22b) for instructing the automatic opening of the refrigerating

chamber doors

21a and 21b are provided on the front surfaces of the refrigerating chamber doors 21(21a) and 21(21b) of the refrigerator 1, respectively. The door opening instructing portions 22a, 22b are electrically connected to an input system provided in the control portion 20 of the refrigerator 1, and when an operation for instructing the opening of the

refrigeration compartment doors

21a, 21b (specifically, an operation for bringing a hand into proximity or contact with the door opening instructing portions 22a, 22b) is performed by a user, a door opening instructing signal indicating the instruction to open the doors of the

refrigeration compartment doors

21a, 21b is transmitted to the control portion 20. The door opening indicators 22a and 22b are electrostatic sensors in this example. The door opening indicators 22a and 22b are not limited to this, and any conventionally known structure may be suitably used. The control unit 20 controls the operation of the door opening device 100 based on the door opening instruction signal from the door opening instruction units 22a and 22b to automatically open the refrigerating compartment doors 21(21a) and 21(21 b).

[ door opener ]

< first embodiment >

Next, the door opening device 100 according to the first embodiment will be described with reference to fig. 1 to 5.

Fig. 2 is a schematic perspective view of a portion of the refrigerator 1 shown in fig. 1 from which the refrigerating compartment doors 21(21a) and 21(21b) and the door opening device 100 are taken out. Fig. 3 is a schematic perspective view of the door opening device 100 shown in fig. 2, with the upper cover 100a removed and the one refrigerating compartment door 21a opened by the door opening device 100. Fig. 4 is a schematic perspective view of the door opening device 100 according to the first embodiment, as viewed from obliquely below, showing the push-out member 111 positioned at the standby position Sa. Fig. 5 is a schematic perspective view of the door opening device 100 according to the first embodiment, as viewed from obliquely below, showing how the push-out member 111 moves from the standby position Sa in the push-out direction R1. Since the moving mechanism 110 for moving the left and right pushing

members

111, 111 has substantially the same configuration except that the left and right are reversed, fig. 4 and 5 and fig. 6 to 10 to be described later show a typical configuration of the moving mechanism 110 for moving the left pushing member 111.

As shown in fig. 1, the door opening device 100 is provided on an upper surface of a refrigerator body 11 (specifically, the first refrigerating chamber 2). As shown in fig. 2 and 3, the door opening device 100 moves the two pushing

members

111 and 111 to open the two refrigerating compartment doors 21(21a) and 21(21b) in the closed state by pushing the pushing

members

111 and 111, respectively. The door opening device 100 includes a moving mechanism 110 for moving the pushing members 111, a driving device 120 for driving the moving mechanism 110, and a support member 140.

The moving mechanism 110 is a mechanism that moves the pushing

members

111, 111 so that the refrigerating compartment doors 21(21a), 21(21b) can be pushed out. Specifically, the moving mechanism 110 moves the pushing

members

111, 111 in the circumferential direction R, R. In this example, the moving mechanism 110 includes two

rotating disks

112 and 112, a drive transmission mechanism 130, a position detection unit 113, and two

cams

114 and 114. The

circular plates

112, 112 are rotated in the horizontal direction. The push-out

members

111, 111 are provided on the outer peripheral edge of the lower surface of the

rotating disks

112, 112 so as to protrude downward. The

rotating disks

112 and 112 are supported by the support member 140 so as to be rotatable about a rotation axis along the vertical direction Z. The drive transmission mechanism 130 transmits the rotational drive force from the drive device 120 to the

rotating disks

112, 112. The position detecting unit 113 (specifically, an encoder) detects the standby position Sa and the reverse position Sb of the pushing

members

111, 111. The

cams

114 and 114 are provided at the upper portions of the refrigerating compartment doors 21(21a) and 21(21b) so that

curved contact surfaces

114a and 114a face the moving mechanism 110 side. The pushing

members

111, 111 slide on the

contact surfaces

114a, 114a of the

cams

114, 114 by rotating the rotating disks 112, and push out the

cams

114, 114 to open the refrigerating compartment doors 21(21a), 21(21 b).

The pushing

members

111, 111 are cylindrical members (specifically, pins) whose axial direction is along the vertical direction Z, and are fixed to the lower surfaces of the

rotating disks

112, 112. The driving device 120 includes a driving motor 121 functioning as a driving unit. The drive motor 121 is electrically connected to an output system of the control unit 20.

The drive transmission mechanism 130 is constituted by a gear train. The drive transmission mechanism 130 includes a drive-side gear 131 (specifically, a worm gear), driven-side gears 132 and 132, and an intermediate gear group 133. The driving side gear 131 is fixed to a rotating shaft 121a of the driving motor 121. The driven gears 132, 132 are provided on the outer peripheral surfaces of the

rotating disks

112, 112. The intermediate gear group 133 is composed of a first intermediate gear 133a, a second intermediate gear 133b, a third intermediate gear 133c, and fourth

intermediate gears

133d, 133 d. The first intermediate gear 133a meshes with the driving side gear 131 and meshes with the second intermediate gear 133 b. The second intermediate gear 133b is meshed with the first intermediate gear 133a and with the third intermediate gear 133 c. The third intermediate gear 133c meshes with the second intermediate gear 133b and meshes with the fourth

intermediate gears

133d, 133 d. The fourth

intermediate gears

133d, 133d mesh with the third intermediate gear 133c and mesh with the driven side gears 132, 132. This allows the rotational driving force from the driving motor 121 to be transmitted to the

rotating disks

112 and 112 through the drive transmission mechanism 130. The

rotating disks

112 and 112 are rotated in the same direction in conjunction with each other by the rotation of the drive motor 121 through the drive transmission mechanism 130.

The position detector 113 detects a detection target (not shown) of the rotating disk 112. The position detecting unit 113 is electrically connected to an input system of the control unit 20, and transmits a standby position signal indicating the standby position Sa of the pushing

members

111, 111 and a reverse position signal indicating the reverse positions Sb, Sb of the pushing

members

111, 111 to the control unit 20. The controller 20 detects the standby position signal from the position detector 113 and controls the stopping operation of the pushing

members

111 and 111 at the standby position Sa and the rotating operation of the

rotating disks

112 and 112 in the pushing directions R1 and R1 by the drive motor 121. The controller 20 detects a reverse position signal from the position detector 113 and controls the reverse operation of the pushing

members

111, 111 at the reverse positions Sb, Sb by the drive motor 121 and the rotation of the

rotating disks

112, 112 in the reverse directions R2, R2 opposite to the pushing directions R1, R1.

The support member 140 constitutes the cabinet 15 of the door opening device 100. Openings 151 and 151 (see fig. 4 and 5) for inserting and removing the pushing

members

111 and 111 are provided at the front end of the case 15. The casing 15 is provided with a through long hole 15a (in this example, an arc-shaped slit hole) that communicates with the openings 151 and allows the push-out

members

111 and 111 to move in the circumferential direction R, R (see fig. 4 and 5). The control unit 20 stops the pushing

members

111, 111 at the standby position Sa. Here, the standby position Sa may be a position inside the openings 151 and 151 (inside the casing 15) and a position outside the openings 151 and 151 (outside the casing 15). In this example, the standby position Sa is a position outside the

openings

151 and 151.

When the right refrigerating compartment door 21b is opened, the controller 20 controls the driving motor 121 to rotate the right rotating disk 112 from the standby position Sa of the right pushing member 111 to the pushing direction R1 to the reverse rotation position Sb to move the pushing member 111. Accordingly, the push-out member 111 pushes out the cam 114 while sliding on the right cam 114, thereby opening the right refrigerating compartment door 21 b. Then, the controller 20 rotates the right rotary disk 112 in the reverse direction R2 in the reverse position Sb and stops it at the standby position Sa. Accordingly, the right push-out member 111 returns to the standby position Sa. At this time, since the left rotary disk 112 and the right rotary disk 112 rotate in the same direction, the left push-out member 111 is pulled in from the standby position Sa to the left opening 151, and then returns to the standby position Sa. That is, the left-side pushing member 111 is drawn into the left-side opening 151 when the right-side pushing member 111 pushes out the right-side cam 114. Therefore, the left push-out member 111 does not abut against the left cam 114 without opening the left refrigerating compartment door 21 a. The door opening operation of the left refrigerating chamber door 21a is also the same as the door opening operation of the right refrigerating chamber door 21b, except for the left and right sides, and the description thereof is omitted here. When the door opening instruction signal from the left door opening instruction unit 22a is sent, the control unit 20 starts a series of door opening operations with respect to the left refrigerating compartment door 21a, and when the door opening instruction signal from the right door opening instruction unit 22b is sent, a series of door opening operations with respect to the right refrigerating compartment door 21 b.

Here, since the two pushing

members

111, 111 and the

openings

151, 151 have substantially the same function, the following description will be given by taking the pushing member 111 and the opening 151 on one side (here, the left side) as a representative.

Incidentally, in the door opening device 100, when an intruding object (not shown) such as a human finger intrudes into the drawing path of the push-out member 111 between the opening 151 into which the push-out member 111 is drawn and the push-out member 111 exposed to the outside from the opening 151, there is a problem that the intruding object is caught between the opening 151 and the push-out member 111 when the push-out member 111 is drawn into the opening 151. Here, the drawing path of the pushing member 111 may be a moving trajectory of the pushing member 111 as a whole when the pushing member 111 is drawn into the opening 151.

In this regard, in the present embodiment, the door opening device 100 is provided with a pinching prevention member 160 between the opening 151 into which the push-out member 111 is drawn and the push-out member 111 when exposed to the outside from the opening 151, and the pinching prevention member 160 prevents pinching of an intruding object between the opening 151 and the push-out member 111 when the push-out member 111 is drawn into the opening 151.

According to the present embodiment, since the pinching prevention member 160 is provided between the opening 151 into which the pushing member 111 is drawn and the pushing member 111 when exposed to the outside from the opening 151, even if an intruding object such as a human finger intrudes into the drawing path of the pushing member 111, the pinching prevention member 160 can effectively prevent the intruding object from being pinched between the opening 151 and the pushing member 111 when the pushing member 111 is drawn into the opening 151.

In the present embodiment, the sandwiching prevention member 160 includes the inclined member 161. The inclined member 161 is inclined such that the height h1 (see fig. 4) is lower as it is farther from the opening 151. Accordingly, even if an intruding object intrudes into the pull-in path of the push-out member 111, the intruding object can be discharged along the inclined top surface 161a of the inclined member 161 to the outside in the height direction of the pull-in path when the push-out member 111 is pulled in toward the opening 151, and thus, the intrusion can be reliably prevented from being caught. The inclined top surface 161a has a planar shape in this example, but may have a convex or concave curved surface shape.

The inclined member 161 is formed on at least one side (in this example, both outer sides) of both outer sides of the pull-in path of the push-out member 111. The inclined member 161 is formed along a pull-in path (in this example, the circumferential direction R) of the push-out member 111. The inclined member 161 is not shown, but may be provided integrally with or in contact with or close to the peripheral edge of the opening 151 (in this example, the cover member 162 described later is omitted). In the case where the inclined member 161 is provided so as to be close to (not in contact with) the peripheral edge portion of the opening 151, for example, the distance between the inclined member 161 and the peripheral edge portion of the opening 151 may be set to a distance (for example, about 3mm or less) to such an extent that an intruding object such as a finger does not enter. This can reliably prevent an intruding object such as a finger from entering between the inclined member 161 and the opening 151.

Incidentally, from the viewpoint of shortening the time from the instruction to open the door to the refrigerator compartment door 21 until the push-out member 111 pushes out the refrigerator compartment door 21, when the door opening device 100 is configured such that the push-out member 111 is moved not only from the standby position Sa to the push-out direction R1 but also from the standby position Sa to the opening 151 in order to move in the reverse direction R2 in a state where the standby position Sa of the push-out member 111 is located outside the opening 151 (the state shown in fig. 4), an intruding object may be pinched between the opening 151 and the push-out member 111 when being pulled into the opening 151 from the standby position Sa. In particular, in the case where the pushing member 111 on one door side is pulled into the opening 151 when the pushing member 111 on the other door side opens the door as in the present embodiment, if the pushing member 111 on the other door side is operated to open the door when the other door is opened, the pushing member 111 on the other door side is pulled into the opening 151 in an exposed state, and therefore there is a risk that an intruding object such as a finger of a user may be caught.

In this respect, in the present embodiment, the sandwiching prevention member 160 includes a cover member 162 (a tunnel-shaped cover member in this example). The cover member 162 is formed to cover at least a part (whole or part) of the pull-in path of the push-out member 111. Accordingly, when the pushing member 111 is pulled into the opening 151 from the standby position Sa, an intruding object such as a finger can be prevented from entering between the opening 151 and the pushing member 111, and thus, the intrusion can be reliably prevented from being pinched.

The cover member 162 is formed along the pull-in path of the push-out member 111. The cover member 162 is provided integrally with or in contact with or close to (integrally with in this example) the peripheral edge portion of the opening 151. Although not shown, when the cover member 162 is provided so as to be close to (not in contact with) the peripheral edge of the opening 151, for example, the distance between the cover member 162 and the peripheral edge of the opening 151 may be set to a distance (e.g., about 3mm or less) to such an extent that an intruding object such as a finger does not enter. This can reliably prevent an intruding object such as a finger from entering between the cover member 162 and the opening 151. The inclined member 161 is provided so as to be integrally with, in contact with, or close to (integrally with in this example) the end portion of the cover member 162 on the opposite side of the opening 151. Although not shown, in the case where the inclined member 161 is provided so as to be close to (not in contact with) the end portion of the cover member 162 opposite to the opening 151, for example, the distance between the inclined member 161 and the cover member 162 may be set to a distance (e.g., about 3mm or less) to the extent that an intruding object such as a finger does not enter. This can reliably prevent an intruding object such as a finger from entering between the inclined member 161 and the cover member 162.

Here, the inclined member 161 and/or the cover member 162 function as the protection member 16, and the protection member 16 protects the pushing member 111 from intrusions when the pushing member 111 is pulled into the opening 151. Therefore, in the present embodiment, when the pushing member 111 is pulled into the opening 151, the protection member 16 can reliably protect the invader from the pushing member 111.

< second embodiment >

Next, the door opening device 100 according to the second embodiment will be described with reference to fig. 6 and 7.

Fig. 6 and 7 are schematic perspective views showing a modification of the cover member 162 in the door opening device 100 according to the second embodiment when viewed obliquely from below.

As shown in fig. 6, in the door opening device 100 of the second embodiment, the cover member 162 has an opening portion 162a that opens the lower side in the direction of gravity. Accordingly, even if foreign matter such as dust enters the cover member 162, the foreign matter can be reliably dropped downward from the opening portion 162 a. In this case, in the case where the pushing member 111 is coated with a lubricant such as grease from the viewpoint of improving the sliding property with the cam 114, it is possible to suppress adhesion of foreign matter such as dust to the pushing member 111, and it is particularly effective. Also, the amount of material forming the cover member 162 can be reduced, so that the cost can be suppressed low.

The open portion 162a is formed along the pull-in path of the push-out member 111. As shown in fig. 6, the opening portion 162a may be opened as a whole, or may be opened so that the width d1 is a distance (e.g., about 3mm or less) to such an extent that an intruding object such as a finger does not enter. This can reliably prevent an intruding object such as a finger from entering the opening 162 a.

Incidentally, when the cover member 162 is provided with the open portion 162a, there is a possibility that an intruding object such as a finger may enter the open portion 162a depending on the width d1 of the open portion 162 a. In this regard, as shown in fig. 7, in the door opening device 100 of the second embodiment, a closing portion 162b is provided in the cover member 162, and the closing portion 162b closes at least a part (the whole or a part, in this example, the whole except a through hole 162c described later) of the opening portion 162 a. This prevents an intruding object such as a finger from entering the closing portion 162 b.

Incidentally, if the closing portion 162b is provided in the cover member 162, foreign matter such as dust is likely to be deposited on the closing portion 162 b. In this regard, in the present embodiment, the blocking portion 162b is provided with a through hole 162 c. Accordingly, even if foreign matter such as dust falls into the blocking portion 162b, the foreign matter can fall downward from the through hole 162 c.

The through hole 162c may be one or more. The through-hole 162c may have a circular shape, an elliptical shape, a polygonal shape, or an elongated shape. When the through-hole 162c is elongated, it is formed along the pull-in path of the push-out member 111. Accordingly, foreign matter such as dust can be reliably dropped along the pull-in path of the pushing member 111. In this example, the through-hole 162c has a slit shape extending in the direction along the pull-in path of the pushing member 111 (specifically, the circumferential direction R) and having a plurality of slits arranged in parallel in the width direction n (specifically, the radial direction).

Although not shown, the inner surface of the blocking portion 162b may be inclined toward the lower side in the gravity direction toward the opposite side (the pushing direction R1) from the opening 151 in the direction of the pull-in path of the pushing member 111 instead of or in addition to the through hole 162 c. Accordingly, even if foreign matter such as dust falls into the blocking portion 162b, the foreign matter can be reliably discharged downward by rolling along the inclined surface (not shown).

< third embodiment >

Next, the door opening device 100 according to the third embodiment will be described with reference to fig. 8 to 10.

Fig. 8 is a schematic perspective view showing a part of the moving member 163 in the door opening device 100 according to the third embodiment as viewed obliquely from below.

In the door opening device 100 according to the third embodiment, the pinching prevention member 160 includes the moving member 163 (specifically, a rail-shaped long member). The moving member 163 is formed at least in part (entirely or partially) of the pull-in path of the push-out member 111. The moving member 163 moves together with (integrally with) the movement of the pushing member 111. Accordingly, at least a part (the whole or a part) of the space between the pushing member 111 and the opening 151 when the pushing member 111 is exposed to the outside from the opening 151 can be filled in the pull-in path of the pushing member 111. Alternatively, when the pinching prevention member 160 includes the inclined portion 161 and/or the cover member 162 (hereinafter, sometimes simply referred to as the protective member 16), at least a part (the whole or a part) of the space between the pushing member 111 and the protective member 16 when the pushing member 111 is exposed outward from the protective member 16 is filled in the pull-in path of the pushing member 111. This can effectively prevent an intruding object from being caught between the pushing member 111 and the opening 151 or the protective member 16. Here, it is preferable that the height h2 of at least the end of the moving member 163 on the side of the pushing member 111 be equal to or greater than the height of the pushing member 111. It is preferable that the width d2 of at least the end of the moving member 163 on the side of the pushing member 111 be equal to or greater than the width (dimension in the width direction) of the pushing member 111. In this example, the moving member 163 is formed in an arc shape along the drawing path of the pushing member 111, and is inserted through the opening 151. The moving member 163 is fixed to the outer peripheral edge of the lower surface of the rotating disk 112 along the direction of the pull-in path of the push-out member 111 (in this example, the circumferential direction R).

The moving member 163 is provided so as to be integrated with or in contact with or close to (in this example, close to) the side surface of the pushing member 111. In the case where the moving member 163 is provided so as to be close to (not in contact with) the side surface of the pushing member 111, for example, the distance between the moving member 163 and the side surface of the pushing member 111 may be set to a distance (for example, 3mm or less) to such an extent that an intruding object such as a finger does not enter. This can reliably prevent an intruding object such as a finger from entering between the moving member 163 and the pushing member 111.

Fig. 9 and 10 are schematic perspective views showing a modification of the moving member 163 in the door opening device 100 according to the third embodiment when viewed obliquely from below.

Incidentally, if an intruding object intrudes into the drawing path of the moving member 163, there is a possibility that the intruding object is caught between the opening 151 and the moving member 163 when the moving member 163 is drawn into the opening 151. This is particularly remarkable in the case of a configuration in which the drawing-in side end 163a of the moving member 163 is exposed to the outside from the opening 151 when the pushing member 111 is moved. Alternatively, when the pinching prevention member 160 includes the protection member 16 (the inclined member 161 and/or the cover member 162), if an intruding object intrudes into the drawing path of the moving member 163, there is a possibility that the intruding object is pinched between the protection member 16 and the moving member 163 when the moving member 163 is drawn into the protection member 16. This is particularly remarkable in the case of a configuration in which the pull-in end 163a of the moving member 163 is exposed to the outside from the protective member 16 when the pushing member 111 is moved. Here, the drawing path of the moving member 163 may be a moving trajectory of the entire moving member 163 when the moving member 163 is drawn into the opening 151 or the protective member 16.

In this regard, in the door opening device 100 according to the third embodiment, as shown in fig. 9, the height h3 of the entire or a part of the pull-in side (in this example, a part of the pull-in side) of the moving member 163 becomes higher as the moving member 163 goes to the side opposite to the pull-in side of the moving member 163 (in this example, the push-out direction R1). Accordingly, even if an intruding object intrudes into the drawing path of the moving member 163, when the moving member 163 is drawn into the opening 151 or the protective member 16, the intruding object can be discharged along the inclined top surface 163b having the height h3 that becomes higher toward the side opposite to the drawing side of the moving member 163 to the outside in the height direction of the drawing path of the moving member 163, and thus, the intrusion can be reliably prevented from being caught. This is particularly effective in the case where the end 163a on the drawing side of the moving member 163 is exposed to the outside from the opening 151 or the protective member 16 when the pushing member 111 is moved. Also, the amount of material forming the moving member 163 can be reduced, so that the cost can be suppressed low. The inclined top surface 163b has a planar shape in this example, but may have a convex or concave curved surface shape.

In the door opening device 100 according to the third embodiment, the protective member 16 preferably further includes a tilt member 161 instead of or in addition to this structure. Accordingly, even if an intruding object intrudes into the retraction path of the moving member 163, when the moving member 163 is retracted into the protective member 16, the intruding object can be discharged along the inclined top surface 161a of the inclined member 161 to the outside in the height direction of the retraction path of the moving member 163, and thus, the intrusion can be reliably prevented from being caught.

In the case where the end 163a on the drawing side of the moving member 163 is exposed to the outside from the opening 151 or the protective member 16 when the pushing member 111 is moved, the distance between the end 163a on the drawing side of the moving member 163 and the opening 151 or the protective member 16 when the pushing member 111 is moved can be set to a distance (for example, about 3mm or less) to the extent that an intruding object such as a finger does not enter. This can reliably prevent an intruding object such as a finger from entering between the end 163a on the pull-in side of the moving member 163 and the opening 151 or the protective member 16.

Further, although the protective member 16 may be provided, in the case where the end 163a on the drawing side of the moving member 163 is positioned in the opening 151 when the pushing member 111 is moved to the maximum, the protective member 16 may not be provided. In addition, although the inclined member 161 may be provided when the protection member 16 is provided, the inclined member 161 may be omitted when the end 163a on the drawing-in side of the moving member 163 is positioned in the protection member 16 when the pushing member 111 is moved to the maximum.

In the present embodiment, as shown in fig. 10, the width d3 of the entire or a part (the entire in this example) of the drawing side of the moving member 163 becomes larger toward the opposite side (the pushing direction R1 in this example) to the drawing side of the moving member 163 with respect to the moving member 163. Accordingly, even if an intruding object intrudes into the drawing path of the moving member 163, when the moving member 163 is drawn into the opening 151 or the protective member 16, the intruding object can be discharged along the inclined side surfaces 163d and 163d having a larger width d3 toward the side opposite to the drawing side of the moving member 163 to the outside in the width direction than the drawing path of the moving member 163, and thus, the intrusion can be reliably prevented from being caught. This is particularly effective in the case where the end 163a on the drawing side of the moving member 163 is exposed to the outside from the opening 151 or the protective member 16 when the pushing member 111 is moved. Also, the amount of material forming the moving member 163 can be reduced, so that the cost can be suppressed low. The inclined side surfaces 163d and 163d have a planar shape in this example, but may have a convex or concave curved surface shape.

Incidentally, even if a person touches the moving member 163, it is generally considered to be a contact from the front face side. From this viewpoint, at least the front inclined side surface 163d of the two inclined side surfaces 163d and 163d of the width d3 may be inclined with respect to the moving member 163.

In this example, the width d3 of the moving member 163 becomes smaller toward the drawing side and becomes smaller toward the proximal end side of the pushing member 111 in the axial direction. Accordingly, the intruding object can be more easily discharged further to the outside in the width direction than the drawing path of the moving member 163 along the inclined side surfaces 163d and 163d, and thus the intrusion object can be more reliably prevented from being pinched.

< other embodiment >

The door opening device 100 of the present embodiment is configured to move the push-out member 111 in the circumferential direction R, but may be configured to move it in a linear direction. The door opener 100 of the present embodiment is used to open a revolving door, but may be used to open a door that slides in a linear direction.

The present invention is not limited to the embodiments described above, and can be implemented in various other embodiments. The described embodiments are therefore to be considered in all respects only as illustrative and not restrictive. The scope of the invention is indicated by the appended claims, and no limitation is intended in the specification. Further, variations and modifications falling within the equivalent scope of the claims are within the scope of the present invention.

In addition, the present application request is based on the priority of japanese patent application No. 2017-139914, which has been filed in japan on 7/19/2017. The content of which is incorporated by reference into the present application. The documents cited in the present specification are all specifically incorporated by reference herein.

Description of the reference numerals

1 refrigerator (storage case example)

100 door opener

110 moving mechanism

111 push-out member

112 rotating circular plate

113 position detecting unit

114 cam

120 driving device

121 driving motor

130 drive transmission mechanism

131 driving side gear

132 driven side gear

133 intermediate gear group

140 supporting member

15 case body

15a through slot

151 opening

16 protective member

160 sandwiching prevention member

161 inclined component

161a inclined top surface

162 cover member

162a open part

162b occlusion part

162c through hole

163 moving member

163a end

163b inclined top surface

163d inclined side

21 refrigerator compartment door (one example of door)

22 door opening indicating part

R circumferential direction

R1 push-out direction

R2 reverse direction

Sa standby position

Reversal position of Sb

X left and right directions

Y front-back direction

Z up-and-down direction

n width direction

Claims

1. A door opening device comprising a case and a push-out member, wherein a door is pushed out and opened by moving the push-out member, the door opening device being characterized in that an opening for the push-out member to enter and exit is provided at the front end of the case,

a pinching prevention member for preventing a pinching of an intruding object between the opening and the push-out member when the push-out member is pulled into the opening is provided between the opening and the push-out member when the push-out member is exposed to the outside from the opening,

the pinching prevention member includes an inclined member that is formed on at least one of both outer sides of the drawing path of the push-out member and is inclined so that the height thereof becomes lower as the height thereof becomes farther from the opening, and the distance between the inclined member and the peripheral edge portion of the opening is set to a distance that does not allow an intruding object to enter.

2. The door opening device according to claim 1, wherein the pinching prevention member includes a cover member formed to cover at least a part of a pull-in path of the push-out member.

3. The door opening device according to claim 2, wherein the cover member has an opening portion that opens at least a part of a lower side in a direction of gravity.

4. The door opening device of claim 1, wherein the pinch preventing member includes a moving member formed at least in a part of a pull-in path of the push-out member and moving together with the movement of the push-out member.

5. The door opening device according to claim 4, wherein at least one of the height and the width of the moving member becomes larger as it goes to a side opposite to the pull-in side.

6. A storage box provided with the door opening device according to any one of claims 1 to 5.