Doorstop device and door side member of the same

Abstract

To provide a doorstop device capable of mitigating impact when a door side member strikes a floor side member.SOLUTION: A doorstop device comprises a floor side member and a door side member 1. The door side member 1 includes an arm member 11, an energization member 12, an absorber 13, and a regulating member 14. The arm member 11 has a roller 113 at its tip and is rotatable between a retracted position and an extended position. The energization member 12 exerts the arm member 11 toward the extended position side. The regulating member 14 regulates the arm member 11 in the retracted position. The floor side member has an engagement groove that engages with the roller 113. When a sliding door is moved in an opening direction, the roller 113 contacts the engagement groove to release the regulation by the regulating member 14, thereby causing the arm member 11 to rotate from the retracted position to the extended position, and the rotation of the arm member 11 is moderated by the absorber 13.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a door stop device and a door side member thereof.

Background Art

[0002] Conventionally, a door stop device for defining the maximum opening amount of a hinged door has been known (see, for example, Patent Document 1).

[0003] The door stop device includes a stopper fixed body (floor side member) provided on the floor surface and a stopper movable body (door side member) provided at the lower end of the hinged door. The stopper movable body includes a mounting piece, a stopper rod rotatably provided on the mounting piece, and a protruding piece formed at the tip of the stopper rod. The stopper fixed body includes a main body, a groove formed on the upper surface of the main body, and a buffer member provided around the main body. The groove has an introduction / derivation part, an outward path, a locking part, and a return path. The buffer member is configured such that the mounting piece abuts thereon in order to suppress a large impact force from being applied to the protruding piece and the groove when the hinged door is opened.

[0004] When the hinged door is opened, the protruding piece is introduced from the introduction / derivation part through the outward path into the locking part. For this reason, the hinged door is held in an open state. Thereafter, when the hinged door is slightly opened and released, the protruding piece is derived from the locking part through the return path and out of the introduction / derivation part. Thereby, the hinged door can be closed.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] Here, there is room for improvement in alleviating the impact when the hinged door is moved in the opening direction and the door side member hits the floor side member.

[0007] The present invention has been made to solve the above problems, and an object of the present invention is to provide a door stopper device capable of reducing the impact when a door side member hits a floor side member and the door side member thereof.

Means for Solving the Problems

[0008] The door stopper device according to the present invention includes a floor side member provided on the floor surface and a door side member provided at the lower end of the hinged door. The door side member includes a rotatably provided arm member, a biasing member that biases the arm member, an absorber for gently rotating the arm member, and a regulating member for regulating the rotation of the arm member. The arm member has an engaging portion at its tip, and is configured to be rotatable between a retracted position where the engaging portion is retracted below the hinged door and a protruding position where the engaging portion protrudes from the hinged door. The biasing member is provided so as to bias the arm member toward the protruding position side. The regulating member is configured to regulate the arm member at the retracted position. An engaging groove engaged with the engaging portion is formed in the floor side member. When the hinged door is moved in the opening direction in a state where the arm member is positioned at the retracted position by the regulating member, the engaging portion abuts against the engaging groove and the regulation by the regulating member is released, so that the door stopper device is configured such that the arm member is rotated from the retracted position toward the protruding position side, the rotation of the arm member is moderated by the absorber, and the engaging portion is moved along the engaging groove and engaged with the engaging groove.

[0009] In the above door stopper device, when the hinged door is moved in the closing direction from the state where the engaging portion is engaged with the engaging groove, the engaging portion is moved along the engaging groove, and the arm member is rotated from the protruding position to the retracted position, so that the arm member is regulated at the retracted position by the regulating member and the engagement between the engaging portion and the engaging groove is released.

[0010] In the above-mentioned door stopper device, the door-side member includes a rectangular box-shaped housing, the arm member has a rotatable base portion and an arm portion extending from the base portion, an engaging portion is provided at the tip of the arm portion, and the housing may accommodate the base portion, a biasing member, an absorber, and a restricting member.

[0011] In the door stopper device in which the door-side member includes a housing, the absorber is disposed on one side with respect to the base portion, the biasing member is disposed on the other side with respect to the base portion, one end portion of the absorber is attached to the housing, the other end portion of the absorber is connected to the base portion, one end portion of the biasing member is connected to the base portion, and the other end portion of the biasing member may be supported by the housing.

[0012] In the door stopper device in which the door-side member includes a housing, the restricting member has a leaf spring with a base end attached to the housing and a locking projection formed at the tip of the leaf spring, and a recess for engaging with the locking projection may be formed in the base portion.

[0013] In the above-mentioned door stopper device, the engaging portion may be a rotatable roller.

[0014] The door-side member of the door stopper device according to the present invention is provided at the lower end portion of the opening door, and includes a rotatably provided arm member, a biasing member that biases the arm member, an absorber for gently rotating the arm member, and a restricting member that restricts the rotation of the arm member. The arm member has an engaging portion at the tip, and is configured to be rotatable between a retracted position where the engaging portion is retracted below the opening door and a protruding position where the engaging portion protrudes from the opening door. The biasing member is provided so as to bias the arm member toward the protruding position side. The restricting member is configured to restrict the arm member at the retracted position. The absorber is configured to gently rotate the arm member when the engaging portion abuts against the floor-side member of the door stopper device when the opening door is moved in the door-opening direction and the arm member rotates from the retracted position toward the protruding position side.

Effects of the Invention

[0015] According to the door stopper device of the present invention and its door-side member, it is possible to mitigate the impact when the door-side member hits the floor-side member.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Embodiments for Carrying Out the Invention

[0017] Hereinafter, an embodiment of the present invention will be described.

[0018] First, with reference to FIGS. 1 to 8, the configuration of the door stopper device 100 according to this embodiment will be described.

[0019] The door stopper device 100 is provided to define the maximum opening amount of the hinged door 150. That is, the door stopper device 100 functions as a stopper for the hinged door 150. Also, the door stopper device 100 is configured to be able to hold the hinged door 150 in an open state. The hinged door 150 is rotatably provided by a hinge (not shown) and is configured to be able to open and close a door opening (not shown). As shown in FIG. 1, the door stopper device 100 includes a door side member 1 provided at the lower end of the hinged door 150 and a floor side member 2 provided on the floor surface 160.

[0020] The floor side member 2 is fixed at a preset position on the floor surface 160 according to the maximum opening amount of the hinged door 150 and the like. The floor side member 2 is formed to slightly protrude from the floor surface 160 and is set to a height that does not interfere with the hinged door 150 so that the hinged door 150 can pass above it. An engagement groove 21 that is substantially L-shaped when viewed in plan is formed in the floor side member 2. The engagement groove 21 has a first portion 21a and a second portion 21b.

[0021] The first portion 21a is formed to extend in the door opening direction Ro (door closing direction Rc). The first portion 21a is formed so that the width becomes wider as it advances in the door closing direction Rc, and the end portion in the door closing direction Rc is open. For this reason, the roller 113 described later can be introduced from the first portion 21a.

[0022] The second portion 21b is formed to extend in a direction intersecting the door opening direction Ro (door closing direction Rc). The second portion 21b is formed to extend from the end portion in the door opening direction Ro of the first portion 21a toward the hinge side of the hinged door 150, and the end portion on the hinge portion side is closed. The width of the second portion 21b is slightly wider than the diameter of the roller 113. For this reason, the roller 113 can move along the second portion 21b, and when the roller 113 is positioned at the closed end of the second portion 21b, the door side member 1 is engaged with the floor side member 2.

[0023] The door-side member 1 is embedded in the hinged door 150 so as to be spaced apart from the floor surface 160. As shown in FIG. 2, the door-side member 1 includes a rotatable arm member 11, a biasing member 12 that biases the arm member 11, a shock absorber 13 for gently rotating the arm member 11, a restricting member 14 that restricts the rotation of the arm member 11, and a rectangular box-shaped housing 15 that houses them. One side in the longitudinal direction of the door-side member 1 is the X1 direction side, the other side in the longitudinal direction of the door-side member 1 is the X2 direction side, one side in the short direction of the door-side member 1 is the Y1 direction side, and the other side in the short direction of the door-side member 1 is the Y2 direction side.

[0024] As shown in FIG. 4, the housing 15 has a rectangular box-shaped case 151 with an open lower end surface and a cover 152 that covers a part of the lower end surface of the case 151. The cover 152 is configured to cover the other side (X2 direction side) in the longitudinal direction of the case 151. An insertion hole 152a is formed in the cover 152.

[0025] As shown in FIG. 6, an insertion hole 151c and a mounting hole 151d for attaching the shock absorber 13 are formed at one end in the longitudinal direction of the case 151 (the end on the X1 direction side). The insertion hole 151c is formed in a flange that projects inward from the lower end of the case 151, and the mounting hole 151d is formed in the upper end surface of the case 151. A support portion 151a for supporting the biasing member 12 is provided at the other end in the longitudinal direction of the case 151 (the end on the X2 direction side). The support portion 151a has an arcuate receiving surface when viewed from the bottom surface side.

[0026] A guide portion 151b for guiding the shock absorber 13 is provided at an intermediate portion in the longitudinal direction of the case 151. Also, a mounting hole 151e for attaching the arm member 11 is formed in the upper end surface of the case 151. The mounting hole 151e is disposed on the other side (X2 direction side) with respect to the guide portion 151b.

[0027] The arm member 11 (see FIG. 3) is configured to be rotatable between a retracted position Pe (see FIG. 1) where the roller 113 is retracted below the casement window 150 and a protruding position Pp (see FIG. 10) where the roller 113 protrudes from the casement window 150. Note that FIGS. 2 and 3 show the state where the arm member 11 is located at the retracted position Pe. The arm member 11 is configured to be able to protrude to one side (Y1 direction side) in the short side direction.

[0028] As shown in FIG. 7, the arm member 11 has a rotatable base portion 111, an arm portion 112 extending from the base portion 111, and a roller 113 provided at the tip of the arm portion 112. Note that the roller 113 is an example of the "engagement portion" of the present invention.

[0029] The base portion 111 is housed in the housing 15 and is disposed at an intermediate portion in the longitudinal direction of the housing 15. The base portion 111 has a lower panel 111a and an upper panel 111b, and a coupling portion 111c (see FIG. 8) that couples the lower panel 111a and the upper panel 111b. Insertion holes 111d are formed in the lower panel 111a and the upper panel 111b. The base portion 111 is configured to be rotatable about a rotation shaft 18 (see FIG. 4) inserted through the insertion holes 111d. A concave portion 114 (see FIG. 8) is formed in the coupling portion 111c. The concave portion 114 is formed so as to extend in the vertical direction. When the arm member 11 is located at the retracted position Pe, the concave portion 114 is disposed on one side (Y1 direction side) in the short side direction.

[0030] The arm portion 112 is formed to extend from the lower panel 111a. Specifically, when the arm member 11 is located at the retracted position Pe, the arm portion 112 is formed to extend from the other side (Y2 direction side) in the short side direction to one side (X1 direction side) in the longitudinal direction and is formed to be curved to one side (Y1 direction side) in the short side direction. Further, the arm portion 112 has an inclined portion that extends obliquely downward from the lower panel 111a and a horizontal portion that extends horizontally from the lower end portion of the inclined portion. That is, as shown in FIG. 2, the arm portion 112 is configured to be pulled out downward from the housing 15.

[0031] The roller 113 is made of rubber, for example, and is rotatably attached to the tip of the arm portion 112 and is disposed below the arm portion 112. Therefore, the roller 113 is disposed below the housing 15. The roller 113 is disposed at a height position where it can engage with the engagement groove 21 of the floor side member 2.

[0032] As shown in FIG. 3, the biasing member 12 is configured to bias the arm member 11 in the projecting direction Rp about the rotation axis 18. That is, the biasing member 12 is provided so as to bias the arm member 11 toward the projecting position Pp. The biasing member 12 is housed in the housing 15 and is disposed on the other side (the X2 direction side) in the longitudinal direction with respect to the base portion 111 of the arm member 11. As shown in FIG. 4, the biasing member 12 includes a base member 121, a slide member 122, and a compression coil spring 123.

[0033] The base member 121 has a contact portion 121a and a shaft 121b. An arc-shaped contact surface is formed on the contact portion 121a when viewed from the bottom surface side. The contact surface of the contact portion 121a is in contact with the receiving surface of the support portion 151a, and the contact portion 121a is slidable with respect to the support portion 151a. Therefore, the base member 121 is provided so as to be tiltable with respect to the housing 15. The shaft 121b is formed so as to extend from the contact portion 121a in one side (the X1 direction side) in the longitudinal direction.

[0034] The slide member 122 is configured to be slidable with respect to the base member 121. The slide member 122 includes a sleeve 122a, a flange 122b, and a connecting portion 122c. The sleeve 122a is formed so as to extend from the flange 122b in the other side (the X2 direction side) in the longitudinal direction and is fitted with the shaft 121b. The flange 122b is formed so as to project radially outward from the sleeve 122a. The connecting portion 122c is formed so as to extend from the flange 122b in one side (the X1 direction side) in the longitudinal direction.

[0035] As shown in FIG. 8, the tip of the connecting portion 122c is connected to the base portion 111 of the arm member 11. The connecting position of the connecting portion 122c with respect to the base portion 111 is arranged on the other side (Y2 direction side) in the short direction with respect to the rotation center of the base portion 111. For this reason, the arm member 11 is biased in the protruding direction Rp. In FIG. 8, the lower panel 111a, the arm portion 112, and the roller 113 are shown by a two-dot chain line in order to show the coupling portion 111c, the link 16, and the connecting portion 122c.

[0036] As shown in FIG. 4, the compression coil spring 123 is sandwiched between the contact portion 121a of the base member 121 and the flange 122b of the slide member 122. For this reason, the compression coil spring 123 is configured to bias the slide member 122 in one longitudinal direction (X1 direction side). Inside the compression coil spring 123, a shaft 121b of the base member 121 and a sleeve 122a of the slide member 122 are arranged.

[0037] In this biasing member 12, when the arm member 11 is rotated toward the protruding position Pp side, the slide member 122 is tilted while being moved in one direction (X1 direction side), and the base member 121 is tilted following the tilt of the slide member 122.

[0038] The absorber 13 is, for example, a hydraulic type, is housed in the housing 15, and is arranged on one longitudinal side (X1 direction side) with respect to the base portion 111 of the arm member 11. The absorber 13 includes a cylinder main body 131, a piston rod 132 that moves forward and backward with respect to the cylinder main body 131, and a connecting portion 133 provided at the tip of the piston rod 132. An insertion hole 131a is formed at the base end portion of the cylinder main body 131. The piston rod 132 and the connecting portion 133 are configured to be guided by the guide portion 151b.

[0039] As shown in FIGS. 7 and 8, the connecting portion 133 is connected to the base portion 111 via the link 16. The link 16 is formed in an arc shape when viewed from the bottom surface side, and is connected to the base portion 111 on the other side (Y2 direction side) in the short side direction. Thus, in the absorber 13, when the arm member 11 is rotated, the piston rod 132 advances and retreats with respect to the cylinder main body 131 while being buffered.

[0040] As shown in FIG. 6, the regulating member 14 is configured to regulate the arm member 11 at the retracted position Pe. That is, the regulating member 14 is provided to position the arm member 11 at the retracted position Pe. The regulating member 14 has a leaf spring 141 and a locking projection 142 formed at the tip of the leaf spring 141. The base end of the leaf spring 141 is attached to the side surface of the case 151. The regulating member 14 is configured such that the locking projection 142 can swing in the short side direction (Y1 and Y2 directions), and the locking projection 142 can be engaged with the recess 114 of the base portion 111.

[0041] Specifically, when the arm member 11 is positioned at the retracted position Pe, the recess 114 is configured to be engaged with the locking projection 142. When the force for rotating the arm member 11 in the protruding direction Rp exceeds a predetermined value in a state where the recess 114 and the locking projection 142 are engaged, the leaf spring 141 is elastically deformed, so that the engagement between the recess 114 and the locking projection 142 is released. This predetermined value is a preset value, and is set so as not to be exceeded only by the biasing force of the biasing member 12.

[0042] As shown in FIGS. 4 and 5, in the door side member 1, with the mounting shaft 17 inserted through the insertion hole 151c of the case 151 and the insertion hole 131a of the cylinder body 131, the mounting shaft 17 is attached to the mounting hole 151d of the case 151. Thereby, one end portion (the end portion on the X1 direction side) of the absorber 13 is attached to the case 151. Further, with the rotation shaft 18 inserted through the insertion hole 152a of the cover 152 and the insertion hole 111d of the arm member 11, the rotation shaft 18 is attached to the mounting hole 151e of the case 151. Thereby, the cover 152 is attached to the case 151, and the arm member 11 is rotatably attached to the housing 15. Note that the other end portion (the end portion on the X2 direction side) of the biasing member 12 is supported by the support portion 151a of the housing 15. That is, the biasing member 12 and the absorber 13 are linearly arranged with the base portion 111 of the arm member 11 interposed therebetween.

[0043] -Operation- Next, with reference to FIGS. 9 and 10, the operation of the door stop device 100 according to the present embodiment will be described.

[0044] First, when the opening door 150 closes the door opening (not shown), the recess 114 (see FIG. 5) of the arm member 11 is engaged with the locking projection 142 (see FIG. 4) of the regulating member 14, and the arm member 11 is located at the retracted position Pe (see FIG. 1).

[0045] Next, when the opening door 150 is moved in the door opening direction Ro (see FIG. 1) and, as shown in FIG. 9, the roller 113 of the arm member 11 enters and abuts against the engaging groove 21 of the floor side member 2, a force in the direction opposite to the door opening direction Ro acts on the roller 113. When the engagement between the recess 114 and the locking projection 142 is released by the force acting on the roller 113 (the force due to the door opening operation of the opening door 150), the arm member 11 is rotated in the protruding direction Rp (see FIG. 3) about the rotation shaft 18 by the biasing force of the biasing member 12 (see FIG. 2). That is, the arm member 11 is rotated from the retracted position Pe toward the protruding position Pp side. At this time, the rotation of the arm member 11 is moderated by the absorber 13 (see FIG. 2).

[0046] Then, as the arm member 11 is gently rotated in the protruding direction Rp, the roller 113 is moved along the second portion 21b of the engaging groove 21, and as shown in FIG. 10, the roller 113 reaches the closed end of the second portion 21b. Thereby, the roller 113 is engaged with the engaging groove 21, and the opening door 150 is held in the open state. For example, at this time, the roller 113 is pressed against the closed end by the biasing force of the biasing member 12.

[0047] Further, when the opening door 150 is pulled in the closing direction Rc from the state where the roller 113 is engaged with the engaging groove 21, the force acting on the roller 113 from the opening door 150 causes the roller 113 to move along the second portion 21b against the biasing force of the biasing member 12. Then, as shown in FIG. 9, when the arm member 11 is rotated from the protruding position Pp to the retracted position Pe, the concave portion 114 of the arm member 11 is engaged with the locking projection 142 of the restricting member 14. Thereby, the arm member 11 is restricted at the retracted position Pe, and the engagement between the roller 113 and the engaging groove 21 is released. Therefore, the opening door 150 can be closed.

[0048] -Effect- In the present embodiment, as described above, the rotatable arm member 11, the biasing member 12 that biases the arm member 11, and the absorber 13 for gently rotating the arm member 11 are provided on the door side member 1. By configuring in this way, when the opening door 150 is moved in the opening direction Ro and the arm member 11 comes into contact with the floor side member 2, the arm member 11 can be rotated and the rotation of the arm member 11 can be gently performed by the absorber 13. Thereby, the impact when the door side member 1 hits the floor side member 2 can be alleviated. Therefore, it is possible to reduce the noise when the door side member 1 hits the floor side member 2.

[0049] Also, in the present embodiment, the arm member 11 has a rubber roller 113, and when the roller 113 abuts against the engagement groove 21 of the floor side member 2, the impact when the door side member 1 hits the floor side member 2 can be further alleviated. Further, the roller 113 can be made to move easily along the engagement groove 21.

[0050] Also, in the present embodiment, when the roller 113 is engaged with the engagement groove 21, the opening door 150 can be held in the open state. Further, the roller 113 and the engagement groove 21 can be engaged by the opening operation of the opening door 150, and the engagement between the roller 113 and the engagement groove 21 can be released by the closing operation of the opening door 150. Thereby, it is possible to easily switch between the state in which the opening door 150 is held in the open state and the state in which the opening door 150 can be opened and closed.

[0051] Also, in the present embodiment, when the roller 113 is not engaged with the engagement groove 21, by positioning the arm member 11 at the retracted position Pe, the appearance can be improved as compared with the case where the door side member is always exposed.

[0052] Also, in the present embodiment, since the restricting member 14 that restricts the arm member 11 at the retracted position Pe is provided on the door side member 1, the arm member 11 can be easily positioned at the retracted position Pe.

[0053] Also, in the present embodiment, by arranging the biasing member 12 and the absorber 13 linearly, the width of the housing 15 can be reduced. Thereby, the housing 15 can be housed inside the opening door 150.

[0054] -Other Embodiments- Note that the embodiments disclosed this time are illustrative in all respects and are not a basis for a limiting interpretation. Therefore, the technical scope of the present invention is not construed only by the above-described embodiments, but is defined based on the description of the claims. Further, the technical scope of the present invention includes all changes within the meaning and scope equivalent to the claims.

[0055] For example, in the above embodiment, the roller 113 is shown as an example of the engaging portion of the present invention. However, the present invention is not limited to this, and the engaging portion of the present invention may be an engaging pin or the like.

[0056] Also, in the above embodiment, an example in which the roller 113 is made of rubber is shown. However, the present invention is not limited to this, and the roller may be made of resin or the like.

[0057] Also, in the above embodiment, an example in which the biasing member 12 has a compression coil spring 123 is shown. However, the present invention is not limited to this, and the biasing member may have a tension coil spring (not shown) or the like.

[0058] Also, in the above embodiment, an example in which the absorber 13 is a hydraulic type is shown. However, the present invention is not limited to this, and the absorber may be a pneumatic type.

[0059] Also, in the above embodiment, an example in which the biasing member 12 and the absorber 13 are linearly arranged is shown. However, the present invention is not limited to this, and the arrangement in the housing may be any arrangement.

Industrial Applicability

[0060] The present invention can be used for a door stop device for defining the maximum opening amount of a hinged door and its door side member.

Explanation of Signs

[0061] 1 Door side member 2 Floor side member 11 Arm member 12 Biasing member 13 Absorber 14 Regulation member 15 Housing 21 Engaging groove 100 Door stop device 111 Base 112 Arm portion 113 Roller (engaging portion) 114 Recess 141 Leaf spring 142 Locking projection 150 Opening door 160 Floor surface

Claims

1. A door stopper device comprising a floor side member provided on a floor surface and a door side member provided at a lower end of a hinged door, wherein the door side member includes a rotatable arm member, a biasing member for biasing the arm member, an absorber for gently rotating the arm member, and a restricting member for restricting the rotation of the arm member, the arm member has an engaging portion at its tip, and is configured to be rotatable between a retracted position where the engaging portion is retracted below the hinged door and a protruding position where the engaging portion protrudes from the hinged door, the biasing member is provided to bias the arm member toward the protruding position side, the restricting member is configured to restrict the arm member at the retracted position, an engaging groove engaged with the engaging portion is formed in the floor side member, when the hinged door is moved in the door opening direction while the arm member is positioned at the retracted position by the restricting member, the engaging portion abuts against the engaging groove and the restriction by the restricting member is released, whereby the arm member is rotated from the retracted position toward the protruding position side, the rotation of the arm member is gently moderated by the absorber, and the engaging portion is moved along the engaging groove and configured to be engaged with the engaging groove. A door stopper device characterized by this.

2. In the door stopper device according to claim 1, when the hinged door is moved in the door closing direction from the state where the engaging portion is engaged with the engaging groove, the engaging portion is moved along the engaging groove, and the arm member is rotated from the protruding position to the retracted position, whereby the arm member is restricted at the retracted position by the restricting member and the engagement between the engaging portion and the engaging groove is released. A door stopper device characterized by this.

3. In the door stopper device according to claim 1 or 2, the door side member includes a rectangular box-shaped housing, the arm member has a rotatable base portion and an arm portion extending from the base portion, and the engaging portion is provided at the tip of the arm portion, and the base portion, the biasing member, the absorber, and the restricting member are housed in the housing. A door stopper device characterized by this.

4. In the door stopper device according to claim 3, the absorber is disposed on one side with respect to the base portion, and the biasing member is disposed on the other side with respect to the base portion, ​ One end of the absorber is attached to the housing, and the other end of the absorber is connected to the base. One end of the biasing member is connected to the base, and the other end of the biasing member is supported by the housing. A door stopper device characterized by this.

5. In the door stopper device according to claim 3, The restricting member has a leaf spring with a proximal end attached to the housing and a locking projection formed at the tip of the leaf spring. A recess for engaging with the locking projection is formed in the base. A door stopper device characterized by this.

6. In the door stopper device according to claim 1 or 2, The engaging portion is a rotatable roller. A door stopper device characterized by this.

7. A door-side member of a door stopper device provided at the lower end of a hinged door, An arm member provided so as to be rotatable, A biasing member for biasing the arm member, An absorber for gently rotating the arm member, And a restricting member for restricting the rotation of the arm member, The arm member has an engaging portion at the tip, and is configured to be rotatable between a retracted position where the engaging portion is retracted below the hinged door and a protruding position where the engaging portion protrudes from the hinged door. The biasing member is provided so as to bias the arm member toward the protruding position side. The restricting member is configured to restrict the arm member at the retracted position. When the hinged door is moved in the door-opening direction, the absorber is configured such that the engaging portion abuts against the floor-side member of the door stopper device, and when the arm member is rotated from the retracted position toward the protruding position side, the absorber gently rotates the arm member. A door-side member of a door stopper device characterized by this.

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