KR200447060Y1 - Door stopper - Google Patents

Abstract

The present invention relates to a door stopper that the door stopper functions by pressing the pusher, and the door is fixed, and the door stopper allows the door to be opened and closed freely by pressing the pusher again. The knock protrusion has an upper housing formed with a guide groove in the longitudinal direction in which the upper end is blocked and the lower end is opened, and has a hollow cylindrical shape with an open lower end. Guide protrusions are inserted into the coupling, the pressing portion is inserted and coupled from the bottom inside the upper housing, the lower portion is formed with a knock protrusion protruding outward in the longitudinal direction in the longitudinal direction, the upper end surface of the knock projection is one side left and right The knock cam having an inclined surface inclined to be disposed, the lower portion of the knock cam Intermediate member, a hollow lower housing disposed below the upper housing and the return spring supporting portion protrudes outwardly, a fixing portion slidable up and down inside the lower housing, a buffer positioned between the intermediate member and the fixing portion. A spring, the upper end includes a return spring supported by the return spring support.

Door, stopper, spring

Description

Door stopper {DOOR STOPPER}

The present invention relates to a door stopper, and when the pressing portion, the door stopper functions to fix the door, and pressing the pressing portion again, the door is released to allow the door to be opened and closed freely.

Currently, the doors used in the entrance doors of apartments and offices are automatically closed when no force is applied, and a stopper is installed on the door to keep the door open if necessary.

By the way, the door stopper currently widely used, as shown in Figure 1, has a structure that the rubber-attached member is rotated up and down, it is very inconvenient for the user to raise and lower it.

The present invention aims to provide a very simple door stopper in which the door is fixed by lightly pressing the pressing part at the top and the door is released by pressing it again to solve the above problems. .

Door stopper according to an embodiment of the present invention, in order to achieve the above object, has a cylindrical inner circumferential surface and the knocking projection protrudes inward of the inner circumferential surface, the upper end is blocked and the knock projection is opened The upper housing is formed with a guide groove in the longitudinal direction, the lower end has a hollow cylindrical shape, the lower end is formed with a tooth-shaped gear portion, the outer peripheral surface is coupled to the guide projection inserted into the guide groove, the upper housing The press portion is inserted into the lower portion coupled to the inside, the lower portion is formed with a knock projection protruding outward in the longitudinal direction in the longitudinal direction, the upper end surface of the knock projection has a knock cam having an inclined surface inclined to the left and right sides of the knock cam, An intermediate member disposed at a lower portion, disposed at a lower portion of the upper housing, and having a return spring support portion projecting outward; Ball lower housing, sliding in the interior of the lower housing to the upper and lower fixing possible, the intermediate member and the buffer and which is located between the government spring, one end of the return comprises a return spring which is supported on a spring support.

The intermediate member includes a small diameter portion having a cylindrical shape and a large diameter portion having a larger diameter than the small diameter portion, wherein the knock cam has a lower diameter that is open at a lower end and the small diameter portion is hollow in a cylindrical shape inserted from below. An accommodating part may be formed, and an upper stepped part may be formed inside the lower housing to contact a portion of the bottom surface of the large diameter part.

The fixing part includes a cylindrical locking cylinder portion, an upper cylinder portion coupled to an upper portion of the locking cylinder portion and having a smaller diameter than the locking cylinder portion, and a lower cylinder portion coupled to a lower portion of the locking cylinder portion and having a smaller diameter than the locking cylinder portion. The lower stepped part may be formed inside the lower housing so that a part of the bottom surface of the locking part contacts.

An elastic member is coupled to a bottom surface of the fixing part, and the elastic member may have a plurality of inclined surfaces inclined from the rear to the front.

At least one fastening plate includes a rear case attached to a wall, a front case coupled to the front of the rear case, and a plurality of fastening plates coupled between the rear case and the front case and having through holes formed therein. A thread is formed on an inner circumferential surface of the through hole of the thread, and a thread is formed on a portion of the outer circumferential surface of the upper housing, so that the fastening plate having a thread formed on the inner circumferential surface of the upper housing and the through hole may be screwed together.

According to the present invention, since the door is fixed by pressing the pressing part, and the door is released by pressing the pressing part again, the door can be easily fixed and released.

In addition, since the buffer spring is installed on the upper part of the fixing part in the lower housing, when the pressing part is pressed for the operation of the door stopper, the lower length of the lower housing is smaller than the distance between the bottom of the fixing part and the bottom surface on which the door is installed. Even in larger cases, the buffer spring absorbs this excess distance, enabling stable fixing of the door by the door stopper.

In addition, when the elastic member is coupled to the bottom of the fixing part and the elastic member has a plurality of inclined surfaces which are inclined forward, the door can be further opened even when the fixing part is lowered and the door is fixed. As the door does not close, the door can be fixed more conveniently.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view showing a door stopper according to an embodiment of the present invention, Figure 2 is a side cross-sectional view of the door stopper according to the present embodiment.

The door stopper according to the present embodiment includes an upper housing 10, a lower housing 20 positioned below the upper housing 10, and an inside of the upper housing 10 and the lower housing 20. Located, the pressing portion 20, the knock cam 30, the intermediate member 40, the buffer spring 50, the fixing portion 60, and the return spring (80) located outside the lower housing 20 And a case 100 located at the outermost of all these components.

First, the upper housing 10 has a hollow cylindrical shape, and knock locking projections 11 protrude inward from the inner circumferential surface thereof. In the knocking projection 11, a plurality of guide grooves 12 are formed to extend up and down, and the guide groove 12 is open at a lower end thereof. In addition, the knocking projection 11 is formed with a recess 13 which is recessed at a low height inclined from the bottom to the top. The seating portion 13 has a shape that is roughly V-shaped upside down.

A thread 14 is formed outward from the lower end of the upper housing 10.

The pressing portion 20 has a hollow cylindrical shape, and a continuous tooth-shaped gear portion 22 is formed at a lower end thereof, and a plurality of guide protrusions 21 protrude outward from an outer surface near the lower end thereof. The guide protrusion 21 is formed in the shape and number corresponding to the knocking projection 11 and the guide groove 12.

The pressing part 20 is inserted into the inside of the lower housing 10, the guide protrusion 21 is slid along the knocking projection 11 and the guide groove 12, the guide The protrusion 21 rises upward until it reaches the knock end protrusion 11 and the upper end of the guide groove 12.

In the accompanying drawings, the upper end of the pressing portion 20 is shown only in the open hollow form, it may be used in combination with the other member that may be easier to press by hand or foot.

The knock cam 30 is inserted into the upper housing from the lower side of the upper housing 10 to be combined, and is positioned below the pressing part 20 in the upper housing 10.

The knock cam 30 has a cylindrical shape with an upper portion having a relatively small diameter as compared to a lower portion, and has an structure in which an upper portion is insertable into the pressing part 20.

Therefore, the lower portion of the knock cam 30 has a cylindrical shape having a relatively large diameter, and the inside of the hollow small diameter receiving portion 34 having an open bottom is formed therein, and is extended vertically outward from the outer circumferential surface thereof. A plurality of knock protrusions 31 are formed at regular intervals. An inclined surface 32 inclined left and right is formed at an upper end of the knock protrusion 31.

Therefore, the knock cam 30, when the end of the knock projection 31 is located to correspond to the guide groove 12, the knock projection 31 is slidable upward along the guide groove 12 Accordingly, the knock cam 30 may move upwards, and when the end portion of the knock projection 31 is positioned at the seating portion 13, the knock cam 30 may no longer move upward.

The intermediate member 40 includes a cylindrical small diameter portion 41 having a relatively small diameter and a large diameter portion 42 having a relatively large diameter under the small diameter portion. Since the small diameter portion 41 is inserted into the small diameter receiving portion 34 of the knock cam 30 so as to be relatively rotatable, the intermediate member 40 and the knock cam 30 are relatively rotated in a coupled state. It is possible.

The lower housing 70 includes a cylindrical body 71 having an outer circumferential surface and a return spring support 72 formed to protrude outwardly in a flange shape at an upper end of the cylindrical body 71. The inside of the lower housing 70 includes three cylindrical hollows 73 which are penetrated up and down and have different diameters, and the hollow portion 73 has the largest diameter at the top and the middle of the lower portion. The portion has a diameter slightly smaller than the top, and is formed to have the smallest diameter at the bottom. Therefore, the first step portion 74 is formed almost horizontally in a portion where the diameter changes first from the uppermost portion of the hollow portion 73, that is, the diameter decreases, and the second portion changes the diameter, that is, the diameter once again. The second stepped portion 75 is formed almost horizontally in this smaller portion.

As shown in FIG. 2, a portion of the lower end of the intermediate member 40 is inserted in the upper portion of the receiving portion 73, and the bottom surface of the intermediate member 40 and the first step portion 74 abut each other. Therefore, when a force is applied from the upper portion to the lower portion of the intermediate member 40, the force is transmitted to the lower case 70 through the first blocking portion 74 as it is.

On the other hand, the hollow portion 73 of the lower housing 70, the fixing portion 60 and the buffer spring 50 is received below the intermediate member 40.

The fixing part 60 has a shape in which three cylinders having different outer diameters are coupled up and down, and has an upper upper cylinder 61 and an upper upper cylindrical portion 61 below the upper cylindrical portion 61. A locking cylinder portion 62 having a larger outer diameter and a lower cylinder portion 63 having an outer diameter smaller than the locking cylinder portion 62 below the locking cylinder portion 62.

The fixing part 60 is inserted from the upper side of the lower housing 70 to the lower side thereof, and the bottom surface of the locking tube portion 62 abuts the second step portion 75. It is preferable that the bottom of the fixing part is bonded to a rubber or the like having a portion directly in contact with the floor surface of the building.

On the other hand, when a member having elasticity, such as rubber, is coupled to the bottom of the fixing part 60, the shape is to have a shape that is inclined toward the front toward the lower, as shown in Figure 5, when the door is opened For example, it is possible for the fixing part to slide backwards, but when the door is closed, it is impossible for the fixing part to slide forward.

The buffer spring 50 is positioned between the intermediate member 40 and the fixing part 60 in the hollow portion 73, and an upper end thereof contacts the bottom surface of the intermediate member 40. The lower end is in contact with the upper surface of the locking portion (62).

Return spring 80 is located outside the lower housing 70, the upper end is supported in contact with the return spring support 72, the lower end is on the upper surface of the third fastening plate 133 of the case to be described later It is supported by contact.

As described above, the upper housing 20, the lower housing 70, and respective components coupled thereto may be coupled to the inside of the case 100.

The case 100 may include a front case 110, a rear case 120 positioned behind the front case 110 and attached to a door, and the front case 110 and the rear case 120. And fastening plates 131, 132, and 133 positioned therebetween.

First, the front case 110 is formed to be round in the front, the inner side is formed with three horizontal fastening grooves 112, 113, 114. The first horizontal fastening groove 112 is formed horizontally at the uppermost side of the inner side, and has a constant distance, and a second horizontal fastening groove 113 is formed at the lower side thereof, and has a constant distance and a third horizontal lower side thereof. The fastening groove 114 is formed.

On the other hand, in the vicinity of the rear end portion on the inner side, the longitudinal fastening protrusions 111 are formed long up and down.

Three fastening plates 131, 132, and 133 are inserted into the three horizontal fastening grooves 112, 113, and 114, and a first fastening plate 131 is inserted into the first horizontal fastening groove 112. The second fastening plate 132 is inserted into the two horizontal fastening groove 113, and the third fastening plate 133 is inserted into the third horizontal fastening groove 114. Each of the fastening plates is rounded so that the front thereof corresponds to the inner surface of the front case 110, and through holes 131a, 132a, and 133a are formed therein, respectively. In particular, the second through hole 132a is formed with a screw thread, which corresponds to the screw thread portion 14 formed on the outer peripheral surface of the lower end of the upper housing 10, and can be fastened to each other.

The rear case 120 includes a door fixing plate 124 directly attached to the door and a blocking plate 121 coupled to the front of the door fixing plate 124.

First of all, the blocking plate 121 has vertical fastening grooves 123 long and vertically formed on both sides thereof, and the vertical fastening protrusions 111 of the front case 110 are inserted and fixed in the vertical fastening grooves 123. . In addition, the back of the blocking plate is formed with two L-shaped hook 122 on the top.

The door fixing plate 124 is directly attached to the door, the thickness of the front and rear direction is relatively thick at both edges and relatively thin in the center portion, the two bolt fastening holes 125 are formed in the center portion up and down It is coupled to the door by bolts 126. On the other hand, the left and right relatively thick portion is formed with a hook insertion groove (not shown) corresponding to the hook 122.

Hereinafter, an operation process of the door stopper according to the present embodiment having the structure as described above will be described in detail.

1 and 2, a state in which the door is not fixed by the door stopper will be described.

The lower housing 70 is lifted upward by the force of the return spring 80, and the first stepped surface 74 of the lower housing 70 moves the bottom surface of the intermediate member 40 upward. The intermediate member 40 is also pushed upward. In addition, the knock cam 30 is the knock projection 31 is guided along the guide groove 12 to move to the top, the knock cam 30 is also moved to the top, the pressing portion 20 is also the Guide protrusions 21 are raised to be located at the upper end of the guide groove (22).

In this state, when the user presses the pressing part 20 with a foot or a hand to fix the door, the pressing part 20 descends inside the upper housing 10 and the guide protrusion 21 at this time. ) Is guided along the guide groove (12).

When the pressing part 20 is lowered, the gear part 22 at the lower end of the pressing part 20 exerts downward force on the inclined surface 31 of the knock cam 30, and the knock cam 30 is also Moving downward, the bottom surface of the knock cam 30 presses the upper surface of the large diameter portion 42 of the intermediate member 40, the intermediate member 40 is also lowered together.

At this time, when the knock cam 30 descends and the knock protrusion 31 exits below the knock catching protrusion 11, the gear part 22 in the form of a tooth presses the inclined surface 31. Therefore, the knock cam 30 is rotated at a predetermined angle.

In more detail, when the gear part 22 presses the inclined surface 31 vertically, the gear part 22 should slide along the inclined surface 31, but the pressing part 20 The guide protrusion 21 is inserted into the guide groove 12 of the knocking projection 11, and since the rotation thereof is limited, instead, the knock protrusion 31 is pulled out of the guide groove 12 so that the rotation is performed. Free knock cam 30 is to rotate.

When the knock cam 30 is rotated in this way, the inclined surface 31 is no longer at a position corresponding to the guide groove 12, but is positioned at a point corresponding to the seating portion 13, and thus the pressing portion 20 Even if the force of pressing downward) is inclined, the inclined surface 32 of the knock protrusion 31 is caught by the seating portion 13, so that it cannot rise upward.

On the other hand, while the intermediate member 40 is lowered, the bottom surface presses the first step surface 74 of the lower housing 70, the lower housing 70 also wins the elastic force of the return spring 80 Will descend.

When the lower housing 70 is lowered, the fixing part 60 accommodated therein is also lowered so that the bottom surface of the fixing part is in contact with the floor.

On the other hand, the distance between the bottom surface of the fixing portion 60 and the bottom surface (such as home or office) in the state before the pressing portion 20 is pressed, that is, the fixing portion 60 is raised upwards When the fixing unit is shorter than the maximum descending distance, the buffer spring 50 is interposed between the fixing unit 60 and the intermediate member 40, so that a bottom surface of the fixing unit 60 is lower than the bottom surface of the fixing unit 60. Even if the lower housing 70 is lowered in the contacted state, the buffer spring 50 is compressed and absorbs this error in distance.

In addition, even if the force of pressing the pressing portion 20 is removed, the buffer protrusion 31, which has been completely escaped out of the guide groove 12, rises slightly until the contact with the seating portion 13, the buffer Since the spring 50 presses the fixing part 60 downward, the bottom surface of the fixing part 60 is kept in contact with the bottom surface, and the fixed state of the door by the door stopper is maintained.

On the other hand, when releasing the door by the door stopper, the pressing portion 20 is pressed again.

When the pressing part 20 is lowered, the knock cam 30 is also lowered, and when the knock protrusion 31 of the knock cam 30 completely exits under the guide groove 12, the gear part 22 ) Pushes the inclined surface 32, the knock cam 30 is rotated once again, the knock projection 31 is located at a point corresponding to the guide groove 12, the pressing portion in such a state When the force for pressing 20 is removed, the knock protrusion 31 rises along the guide groove 12, and the pressing part 20 rises, and thus the knock cam 30 also rises. As the knock cam 30 rises, the intermediate member 40 and the lower housing 70 also rise. The force which is the source of such a lift is the force which the return spring 80 pushes the return spring support part 72 upward.

When the lower housing 70 is raised, the fixing part 60 accommodated therein also rises, and by this raising, the contact between the fixing part and the bottom surface is released, and the door can be freely opened and closed.

1 is a perspective view of a conventional door stopper.

Figure 2 is an exploded perspective view of the door stopper according to an embodiment of the present invention.

Figure 3 is a side cross-sectional view of the door stopper according to an embodiment of the present invention.

Figure 4 is an exploded perspective view showing only the case portion of the door stopper according to an embodiment of the present invention.

Fig. 5 is a side view showing the door stopper mounted on the door according to one embodiment of the present invention.

* Description of the main parts of the drawings *

10: upper housing 11: knock latch

12: Information groove 13: Seating part

14: thread 20: pressing part

21: guide protrusion 22: gear unit

30: Knock Cam 31: Knock Projection

32: slope 34: small diameter receiving portion

40: middle part 41: small diameter part

42: large diameter part 50: buffer spring

60: fixing part 61: upper cylinder part

62: locking cylinder 63: lower cylinder

70: lower housing 71: cylindrical body

72: return spring support 73: hollow part

74: upper stepped portion 75: lower stepped portion

80: return spring 110: front case

111: engaging protrusion 112: the first sliding groove

113: second sliding groove 114: third sliding groove

120: rear case 121: blocking plate

122: hook 123: vertical fastening groove

124: door fixing plate 125: bolt fastener

126: bolt 131: first fastening plate

131a: through hole 132: second fastening plate

132a: through hole 133: third fastening plate

133a: through hole

Claims (5)

An upper housing having a cylindrical inner circumferential surface and protruding knocking projections into the inner circumferential surface, wherein the knock projection is formed with a guide groove in a longitudinal direction in which the upper end is blocked and the lower end is opened; The lower end has a hollow cylindrical shape, the lower end has a tooth-shaped gear portion is formed, the outer peripheral surface is coupled to the guide projection inserted into the guide groove, the pressing portion is inserted into the upper housing coupled from below; A knock protrusion is formed to protrude outwardly in a longitudinal direction on a lower portion thereof, and an upper end surface of the knock protrusion has a knock cam having an inclined surface inclined toward left and right sides; An intermediate member disposed below the knock cam; A hollow lower housing disposed below the upper housing and having a return spring support projecting outward; A fixed part slidable up and down in the lower housing; A buffer spring positioned between the intermediate member and the fixed portion; And a return spring having one end supported by the return spring support part. The method of claim 1, The intermediate member, It includes a small diameter portion having a cylindrical shape and a cylindrical large diameter portion having a diameter larger than the small diameter portion, In the knock cam, The lower end is opened and a small diameter accommodating part is formed in a hollow shape in which the small diameter part is inserted from below. A door stopper having an upper step portion in contact with a portion of the bottom surface of the large diameter portion inside the lower housing. The method of claim 2, The fixing part, A cylindrical locking portion; An upper tube portion coupled to an upper portion of the locking portion and having a diameter smaller than that of the locking portion; And a lower cylinder portion coupled to a lower portion of the locking cylinder portion and having a diameter smaller than that of the locking cylinder portion. A door stopper having a stepped lower stepped portion formed inside the lower housing to contact a portion of a bottom surface of the engaging cylinder portion. The method of claim 3, An elastic member is coupled to the bottom of the fixing part, The elastic member has a door stopper having a plurality of inclined surfaces inclined from the rear to the front. The method according to any one of claims 1 to 4, A rear case attached to the wall, A front case coupled to the front of the rear case, It is coupled between the rear case and the front case, and comprises a plurality of fastening plate is formed through holes, A thread is formed on the inner circumferential surface of the through hole of at least one fastening plate, A thread is formed on a portion of the outer circumferential surface of the upper housing, And a fastening plate having a thread formed on the inner circumferential surface of the upper housing and the through hole is screwed together.

Images