KR200390828Y1 - stopper for a door - Google Patents

Abstract

A one-touch type door stopper is disclosed. The stopper is provided with the convenience of the one-touch method that can be fixed or released by the contact member is in close contact or spaced to the floor only by stepping on the user's foot. In addition, since the contact member is elastically supported by the elastic member for pressure, even if there is foreign matter between the contact member and the bottom or the floor is uneven, it is firmly adhered to the floor to maintain the open state of the door.

Description

Stopper for door

The present invention relates to a stopper for a door, in particular, the lower end of the fixing member is in close contact with the floor by stepping on the operating member to fix the door open position, and the lower end of the fixing member from the bottom by stepping on the operating member again It relates to a one-touch type stopper for the door can be freely opened / closed spaced apart.

In general, the door installed at the entrance of an apartment or an office needs to open the door at an arbitrary angle for ventilation, cleaning, or convenience of access. For this purpose, a door stopper having a horseshoe shape is attached to the lower part of the door. .

The horseshoe-shaped door stopper has a structure that is rotated up and down about the hinge point, and the rubber plate at the bottom of the stopper is rotated by pressing the upside down stopper with the foot to open the door and fix it at an arbitrary opening angle. When the stopper was closed and the door was closed, the stopper had to be lifted up again.

However, the operation of lifting it up again has a problem that is difficult to kick. Thus, the problem that the shoes are damaged during the operation of lifting the stopper to the foot.

The present invention has been devised to solve the problems of the prior art as described above, the technical problem of the present invention is that the stopper is operated only by stepping on the stopper by configuring the stopper as a one-touch type, so that the open position of the door is fixed or the fixed state is released. To provide a means to be.

In order to solve the above technical problem, the present invention,

A fixed body formed in a structure in which an upper / lower end portion and a rear portion are opened and installed in a vertical direction to the door;

A fixing member coupled to the lower portion of the fixed body so as to be elastically supported by a return elastic member to slide upward and downward in the fixed body;

An actuating member having a lower end penetrated through an upper end of the fixing body to be coupled to an upper end of the fixing member so as to be exposed to an upper side of the fixing body and sliding in an up / down direction;

Position fixing means for selectively fixing the position of the fixing member and the operating member so that the lower end portion of the fixing member is selectively contacted / spaced to the floor by the up / down sliding operation of the operating member to fix or release the open position of the door. It provides a stopper for a door comprising a.

According to another embodiment of the present invention, an upper / lower end portion and a rear portion are formed to have an open structure, and a pair of guide protrusions are formed in a longitudinal direction on one inner surface thereof, and a fixing body having a fitting groove formed on a lower surface of the rear portion;

A fixing bracket for fitting into the fitting groove and being coupled to the fixing body at a lower end thereof, and being fixed to the door by a plurality of screws to fix the fixing body to the door;

The lower end portion is coupled with a soft contact member for increasing the adhesion to the bottom, the guide end is inserted between the guide projections is formed on one side, the pressing elastic member is installed on the inside, the return elastic member on the outer surface Is installed, the fixing member is elastically supported by the return elastic member coupled to penetrate through the lower end of the fixed body to operate in the vertical / sliding direction in the fixed body;

A pressing part is formed at an upper end, and a lower end penetrates through an upper end of the fixing body to be coupled to an upper end of the fixing member so that the pressing part is exposed to an upper side of the fixing body and is elastically supported by the pressing elastic member to slide upward and downward. Actuated member; And

The contact member coupled to the lower end of the fixing member by the up / down movement of the operating member is selectively contacted / separated from the bottom to selectively fix the position of the fixing member and the operating member to fix or release the open position of the door. It provides a stopper for the door comprising a; position fixing means.

The position fixing means, the projection is formed on one end surface of the cylindrical support portion, the operation surface is formed on each side of the projection portion, respectively, the inclined locking groove is formed in a symmetrical shape between the two sides of each operation surface is operated A latching hole in which the support part is freely rotatable on the rear surface of the member;

A space having a polygonal shape, a linear guide formed to communicate with one side of the space, linearly guided to guide the protrusion, and inclined to one side of the linear guide, so as to first rotate the protrusion at a predetermined angle. The secondary part of the rotating part, the other side of the space part protrudes so that the vertex is directed toward the other end of the linear guide part, and the second rotating part for rotating the first rotated projection part again at a predetermined angle, the other part of the linear guide part so that the locking grooves interfere. The locking / rotation part formed at the side end and the second rotated protrusion is rotated three times to prevent lifting of the operating member and finally rotates the protrusion to move to the linear guide, and the position spaced apart from the secondary rotation part. Protruded lower than the secondary rotating part at the other side of the space part and a predetermined angle due to interference with the locking / rotating part The locking mouth is provided with an operation groove made of a fourth rotation part for rotating the lowered protrusion further in a third rotation state at a predetermined angle so that the protrusion is finally rotated by the locking / rotating part to move to the linear guide when the protrusion is raised. Includes; the position adjusting member coupled to the back of the fixed body to be inserted into the operation groove is operated,

Pressing the operating member once, the position adjusting means fixes the lowered state of the operating member to stop the movement of the door while the fixing member is in close contact with the floor, and pressing the operating member once again the position adjusting means is operated member The stopper for the door, characterized in that the fixing state of the door is released by releasing the position fixed state of the operating member is raised by the elasticity of the return elastic member and the pressure elastic member so as to be spaced apart from the bottom.

Rotating protrusions are formed in the center of the protrusion.

When described in detail with reference to the accompanying drawings, each preferred embodiment of the present invention having such features as follows.

As shown in FIGS. 1 to 3A and 3B of the accompanying drawings, the stopper for a door according to the present embodiment is installed at the lower side of the fixed body 20 and the fixed body 20 that are fixed to the door 10. Fixed member 40, the operating member 50 is installed on the upper side of the fixed body 20 and connected to the fixed member 40, and is installed on the back of the operating member and the fixed body 20 operating member ( 50) and the position fixing means 60 for fixing or releasing the position of the fixing member 40.

Looking at this in more detail as follows.

The fixed body 20 has a structure in which the upper portion, the lower portion and the rear surface are opened to form the rear portion 22, as shown in FIG. 1 or 3A, 3B. And the fitting groove 26 is formed on the bottom surface of the rear portion 22, a pair of guide protrusions 24 are formed in the longitudinal direction on the inner surface. The fixed body 20 has a housing function for supporting the fixing member 40, the operation member 50 and the position fixing means 60.

The fixing body 20 may be installed in the door 10 by a plurality of screws, adhesives, adhesive tapes, etc., but is preferably installed by the fixing bracket 30.

The fixing bracket 30 is fitted into the fitting groove 26 to form a fitting protrusion 23 to be coupled to the fixing body 20 at a lower end thereof, and has a structure in which a plurality of screw holes are formed on the front surface thereof. And the fixing bracket 30 is coupled to the rear portion 22 of the fixing body 20 to cover the rear portion 22 and at the same time has a function of supporting while preventing the separation of the positioning member 64 to be described later. The fixing bracket 30 is pre-installed on the door 10 by screws, and then inserts the fitting protrusion 23 into the fitting groove 26 of the fixing body 20. Since the coupling screw 58 is fastened to the door 10 through the fixing bracket 30 at the upper end of the fixing body 20 through the through hole 54 formed in the operating member 50, the fixing body 20 and The fixing bracket 30 is firmly coupled and at the same time the fixing body 20 is installed in the door 10.

The fixing member 40 is selectively moved in the up and down directions by the position fixing means 60 which is operated by the operation of the operating member 50, and the lower end thereof is selectively adhered to or spaced from the bottom of the door 10. To fix the open state, the lower end portion is coupled to the soft contact member 42 for increasing the adhesion with the bottom. On one side of the guide end 44 is inserted between the guide projections 24 are formed. The pressing elastic member 46 is installed inside, and the return elastic member 48 is installed on the outer surface, respectively. The fixing member 40 is formed at one end of the locking jaw to which the return elastic member 48 is caught so that the return elastic member 48 is positioned between the locking jaw and the lower end of the fixed body 20. Joined through. Accordingly, the fixing member 40 is elastically supported by the return elastic member 48 to slide in the up / down direction inside the fixing body. At this time, the contact member 42 may be composed of a rubber material, a synthetic resin material, etc., is fitted to the lower end of the fixing member 40.

The operation member 50 is coupled with the fixing member 40 so as to move the fixing member 40 downward to move downward by the load generated when the user steps on the foot so that the fixing member 40 is brought into close contact with the floor. Or spaced apart, the pressing portion 52 is formed on the top. The upper end of the fixing member 40 by passing through the upper end of the fixing body 20 so that the pressing portion 52 is exposed to the upper side of the fixing body 20 and is elastically supported by the pressing elastic member 46. Combined and sliding in up / down direction. At this time, the lower end of the operating member 50 is inserted into the upper end of the fixing member 40 is in contact with the pressing elastic member 46. Therefore, when stepping on the actuating member 50, the force transmitted to the actuating member 50 is transmitted to the pressure elastic member 46, the force transmitted to the pressure elastic member 46 is transmitted to the fixing member 40. Will be. Therefore, the fixing member 40 is brought into close contact with the floor by the elasticity of the elastic member 46 for pressing.

The operating member 50 is formed with a through hole 54 through which the coupling screw 58 passes.

Position fixing means 60 is the contact member 42 coupled to the lower end of the fixing member 40 by the up / down movement of the operating member 50 is selectively in contact with the floor or spaced open the door 10 In order to selectively fix the position of the fixing member 40 and the operating member 50, in particular the position of the operating member 50 to fix or release the position.

This position fixing means 60 is configured as follows.

As shown in FIGS. 1 and 4A and 4B, the locking mechanism 62 and the position adjusting member 64 are formed. The locking mechanism 62 has protrusions 62B protruding from one end of the cylindrical support portion 62A, and operating surfaces 62C are formed on both sides of the protrusion 62B, respectively, and both sides of each operating surface 62C. Interlocking grooves 62D inclined inwardly have a structure formed in a symmetrical shape therebetween. The latch 62 is inserted into the installation hole formed in the back of the operation member 50, the support portion 62A can be freely rotated. For this purpose, it is preferable to oil lubricating oil between the support part 62A and the installation hole. On the other hand, the rotation projection 62E is formed in the center of the projection 62B of the locking portion 62, which allows the locking portion 62 to rotate smoothly, while moving in the operating groove 64G. Minimizes the frictional resistance to allow free movement. The support portion 62A is intended to be supported by the edge jaw of the operation groove 64G to be described later.

Positioning member 64 is formed in a plate shape having a constant thickness and length, one surface has a structure in which the working groove (64G) is formed.

The operating groove 64G formed in the position adjusting member 64 is formed so that the projection 62B of the locking hole 62 is inserted and selectively caught or released. The operation groove 64G is formed to communicate with the space portion 64A having a polygonal shape, one side of the space portion 64A, and a linear guide portion 64B for guiding the protrusion 62B in a linear direction. It is formed to be inclined outward on one side of the linear guide portion 64B to rotate the protrusion 62B primarily at a predetermined angle, the primary rotating portion 64C, and the vertex of the space portion 64A on the other side of the linear guide portion. The linear guides protrude toward the other end of the 64B to rotate the primary rotated protrusion 62B again only secondary to a predetermined angle, so that the locking groove 62D interferes with the secondary rotation portion 64D. Protruding portion 62B formed at the other end portion of the portion 64B and rotated in the third direction is rotated only at a predetermined angle to prevent the rising of the operating member 50, and finally to close the protrusion 62B. To rotate and move to the linear guide 64B. The other side of the rim / rotation portion 64E and the space portion 64A of the position spaced apart from the secondary rotation portion 64D is formed to protrude lower than the secondary rotation portion 64D, and predetermined by interference with the locking / rotation portion 64E. When the protrusion 62B is further rotated at a predetermined angle by rotating the lowered protrusion 62B in the state of being rotated in three directions only by the angle, it is finally rotated by the locking / rotating portion 64E and moved to the linear guide 64B. It is made of a working groove (64G) consisting of a fourth rotation part 64 to be.

The position adjusting member 64 is installed on the rear portion 22 of the fixed body 20 so that the protrusion 62B is inserted into the working groove 64G and is supported by the fixing bracket 30.

Referring to the operation of the door stopper according to a preferred embodiment of the present invention configured as described above are as follows.

First, the fixing member 40 and the operating member 50 are coupled to the inside of the fixed body 20, and the locking member 62 is installed at the operating member 50, and the rear portion 22 of the fixed body 20 is provided. The position adjusting member 64 is installed. In such a state, the fitting protrusion 32 of the fixing bracket 30 installed on the door 10 is inserted into the fitting groove 26 of the fixing body 20, and then the coupling screw 58 is operated as described above. After passing through the through hole 54 of the fixing body 20 to be fastened to the door 10 through the upper end of the fixing bracket 30. In this process, the combination of the position fixing means 60 is made, the coupling between the components is completed, and the installation is completed on the door 10.

Subsequently, as shown in FIG. 3A, the fixing body 20 is installed on the inner surface of the door 10 by the fixing bracket 30, and the contact member 42 of the fixing member 40 is spaced apart from the bottom. When the user stepped on the pressing portion 52 of the operating member 50, the locking mechanism 62 is moved downward from the linear guide portion 64B of the operating groove 64G as shown in 'A' shown in Figure 4a. do. The protruding portion 62B of the locking mechanism 62 moved downward is primarily rotated at a predetermined angle by the primary rotating portion 64C. That is, the locking mechanism 62 which moves downward while being guided by the linear guide portion 64B has one direction as shown by 'B' of FIG. 4A by the primary rotating portion 64C of which one side operation surface 62C is inclined outward. Rotates only at a predetermined angle. At this time, since the rotation protrusion 62E is formed at the center of the protrusion 62B, the locking mechanism 62 is easily rotated and moved.

The protruding portion 62B rotated by the predetermined angle by the primary rotating portion 64C moves downward to interfere with the secondary rotating portion 64D and is rotated at a predetermined angle in a predetermined direction as shown by 'C' in FIG. 4A. That is, as the vertex of the secondary rotation part 64D formed to be inclined to one side is inserted into the locking groove 62D formed at one side of the protrusion 62B, the protrusion 62B is further rotated at a predetermined angle in one direction so that the 'C' state is Will be.

Subsequently, when the user removes the force by removing the foot from the pressing portion 52, the operation member 50 is moved upward from the space portion 64A by the elasticity of the elastic member 46 for pressing, as shown in FIG. 4A. As shown in the 'D', the hook / rotator 64E is caught and rotated at a predetermined angle in one direction, thereby stopping the lift between the hook / rotator 64E and the primary rotor 64C. Therefore, the rise of the operating member 50 and the fixing member 40 is to be prevented.

In this state, the fixing member 40 is lowered, and the contact member 42 is in close contact with the floor. The fixing member 40 is elastically supported by the elastic member 46 for pressing, and the contact member 42 is bottomed. It will be kept in close contact with.

At this time, since the operating member 50 is connected to the fixing member 40 through the pressing elastic member 46, even if the user stepped on the pressing portion 52 with a large force, the impact elastic member 46 is pressed. Since the absorbing member prevents damage to the associated component and at the same time, the fixing member 40 is elastically supported by the elastic member 46 for pressing, so that the close contact member 42 is firmly adhered to the floor without lifting as shown in FIG. 3B. It is to maintain the open state of (10).

On the other hand, in order for the user to release the open state of the door 10, the contact member 42 is spaced apart from the floor by only stepping on the pressing part 52 again, thereby fixing the open state of the door 10. This will be described in more detail as follows.

When the user presses on the pressing part 52 again, as shown in FIG. 4B, the protrusion 62B (the catching hole 62) that is caught between the locking / rotating part 64E and the primary rotating part 64C moves downward. It rotates at a predetermined angle from the "F" state to the "G" state by interfering with the secondary rotation part 64D. Then, when the user removes the stepped foot, it moves upward by the elasticity of the elastic member 46 for pressure. As shown in FIG. 4B, the end of one side of the operating surface 62C interferes with the locking / rotating portion 64E and rotates from the 'H' state to the 'I' state, and is guided to the straight guide 64B. It moves from the 'J' state to the 'K' state.

In this way, when the protrusion 62B moves back to the linear guide 64B, the fixing member 40 is raised by the return elastic member 48, and the operating member 50 is also raised. In other words, the contact member 42 is spaced apart from the floor is the fixed state of the door 10 is released.

On the other hand, Figure 5 is a perspective view showing a door stopper according to a second embodiment of the present invention, Figure 6 is a partially enlarged cross-sectional view showing a coupling structure of the cover member shown in FIG.

As shown in FIGS. 5 and 6, the door stopper according to the second embodiment has the same configuration as that of the first embodiment except that the cover member 70 is installed on the operation member 50.

The cover member 70 covers the actuating member 50 and the fixed body 20 so that the user can easily step on it, and the coupling groove 56 is provided in the pressing portion 52 of the actuating member 50. Is formed. The cover member 70 has a structure in which a rear surface and a lower portion thereof are opened, and an anti-slip part 72 is formed at an upper end thereof, and a coupling protrusion 74 is formed at an inner side of the upper end to fit into the coupling groove 56.

Therefore, the cover member 70 is coupled to the operating member 50 by inserting the coupling protrusion 74 into the coupling groove 56 of the operating member 50. When the cover member 70 is coupled in this way, the front aesthetics of the stopper are beautiful, and the user can operate without sliding.

As described above, the contact member 42 may be in close contact with or spaced apart from the floor by only stepping on the pressing portion 52 of the operation member 50 to fix or release the open state of the door 10.

Door stopper according to the present invention is provided with the convenience of the one-touch system that can be fixed or released by the contact member is in close contact or spaced to the floor only by stepping on the user's foot. In addition, since the contact member is elastically supported by the elastic member for pressure, even if there is foreign matter between the contact member and the floor or the floor is not even, it is firmly adhered to the floor to maintain the open state of the door.

1 is an exploded perspective view showing a door stopper according to a first embodiment of the present invention.

Figure 2 is a perspective view of the coupled state showing the stopper for the door shown in FIG.

3A and 3B are sectional views in which the door stopper shown in FIG. 1 is installed.

4A and 4B are schematic views for explaining an operating state of the position fixing means in FIG.

5 is a perspective view showing a door stopper according to a second embodiment of the present invention.

6 is a partially enlarged cross-sectional view showing a coupling structure of the cover member shown in FIG.

<Description of the symbols for the main parts of the drawings>

10: door 20: fixed body

22: rear portion 24: guide protrusion

26: fitting groove 30: fixing bracket

32: fitting protrusion 40: fixing member

42: contact member 44: guide end

46: elastic member for pressing 48: elastic member for return

50: operating member 52: pressing part

54: through hole 56: coupling groove

60: position fixing means 62: hook

64: positioning member 70: cover member

Claims (12)

A fixed body formed in a structure in which an upper / lower end portion and a rear portion are opened and installed in a vertical direction to the door; A fixing member coupled to a lower portion of the fixing body so as to be elastically supported by a return elastic member to slide upward and downward in the fixing body; An actuating member having a lower end penetrated through an upper end of the fixing body to be coupled to an upper end of the fixing member so as to be exposed to an upper side of the fixing body and sliding in an up / down direction; Position fixing means for selectively fixing the position of the fixing member and the operating member so that the lower end portion of the fixing member is selectively contacted / spaced to the floor by the up / down sliding operation of the operating member to fix or release the open position of the door. Door stopper, characterized in that it comprises a. The method of claim 1, wherein the fixing body is installed on the door by a fixing bracket, A fitting protrusion is formed at the lower end of the fixing bracket, a fitting groove is formed at the bottom surface of the rear part of the fixing body, and a through hole is formed at the operating member. The fitting protrusion is fitted into the fitting groove while the fixing bracket is fixed to the door by a plurality of screws, and the coupling screw fixes the upper end of the fixing body and the fixing bracket to the door through the through hole. Door stopper, characterized in that the installation. The door stopper according to claim 1, wherein a pressing elastic member is installed between the fixing member and the operating member such that the fixing member and the operating member are elastically supported. The stopper for a door according to claim 1, wherein a guide end is formed on the fixing member, and a pair of guide protrusions are formed inside the fixing body to guide the up / down movement of the fixing member. The method according to any one of claims 1 to 4, wherein the operating member covers the operating member and the fixed body, and provided with a cover member for increasing the contact force with the shoe, The cover member is formed so as to surround the fixing body, a non-slip portion is formed on the upper end, the engaging projection is formed on the inside is a stopper for the door, characterized in that the engaging projection is fitted into the engaging groove formed in the pressing portion. . The method of claim 5, wherein the position fixing means, Protruding portions protrude from one end of the cylindrical support portion, and operating surfaces are formed on both sides of the protruding portion, respectively, and inclined locking grooves are formed in symmetrical shapes between both sides of the operating surfaces, so that the supporting portion is formed on the rear surface of the operating member. Hanging port which is installed to enable free rotation; A space having a polygonal shape, a linear guide formed to communicate with one side of the space, linearly guided to guide the protrusion, and inclined to one side of the linear guide, so as to first rotate the protrusion at a predetermined angle. The secondary part of the rotating part, the other side of the space part protrudes so that the vertex is directed toward the other end of the linear guide part, and the second rotating part for rotating the first rotated projection part again at a predetermined angle, the other part of the linear guide part so that the locking grooves interfere. The locking / rotation part formed at the side end and the second rotated protrusion is rotated three times to prevent lifting of the operating member and finally rotates the protrusion to move to the linear guide, and the position spaced apart from the secondary rotation part. Protruded lower than the secondary rotating part at the other side of the space part and a predetermined angle due to interference with the locking / rotating part The locking mouth is provided with an operation groove made of a fourth rotation part for rotating the lowered protrusion further in a third rotation state at a predetermined angle so that the protrusion is finally rotated by the locking / rotating part to move to the linear guide when the protrusion is raised. Includes; the position adjusting member coupled to the back of the fixed body to be inserted into the operation groove is operated, Pressing the operating member once, the position adjusting means fixes the lowered state of the operating member to stop the movement of the door while the fixing member is in close contact with the floor, and pressing the operating member once again the position adjusting means is operated member The stopper for the door, characterized in that the fixing state of the door is released by releasing the position fixed state of the operating member is raised by the elasticity of the return elastic member and the pressure elastic member so as to be spaced apart from the bottom. The door stopper according to claim 6, wherein a rotation protrusion is formed at the center of the protrusion. The door stopper according to claim 7, wherein a soft contact member is installed at the lower end of the fixing member to increase the adhesion with the bottom. An upper / lower end portion and a rear portion are formed in an open structure, and a pair of guide protrusions are formed in a longitudinal direction on one inner surface thereof, and a fixing body having a fitting groove formed on a lower surface of the rear portion; A fixing bracket for fitting into the fitting groove and being coupled to the fixing body at a lower end thereof, and being fixed to the door by a plurality of screws to fix the fixing body to the door; The lower end portion is coupled with a soft contact member for increasing the adhesion to the bottom, the guide end is inserted between the guide projections is formed on one side, the pressing elastic member is installed on the inside, the return elastic member on the outer surface Is installed, the fixing member is elastically supported by the return elastic member coupled to penetrate through the lower end of the fixed body to operate in the vertical / sliding direction in the fixed body; A pressing part is formed at an upper end, and a lower end penetrates through an upper end of the fixing body to be coupled to an upper end of the fixing member so that the pressing part is exposed to an upper side of the fixing body and is elastically supported by the pressing elastic member to slide upward and downward. Actuated member; And The contact member coupled to the lower end of the fixing member by the up / down movement of the operating member is selectively contacted / separated from the bottom to selectively fix the position of the fixing member and the operating member to fix or release the open position of the door. Position stopper for a door comprising a. The method according to claim 9, wherein the operating member covers the operating member and the fixed body, and provided with a cover member for increasing the contact force with the shoe, The cover member is formed so as to surround the fixing body, a non-slip portion is formed on the upper end, the engaging projection is formed on the inside is a stopper for the door, characterized in that the engaging projection is fitted into the engaging groove formed in the pressing portion. . The method of claim 9 or 10, wherein the position fixing means, Protruding portions protrude from one end of the cylindrical support portion, and operating surfaces are formed on both sides of the protruding portion, respectively, and inclined locking grooves are formed in symmetrical shapes between both sides of the operating surfaces, so that the supporting portion is formed on the rear surface of the operating member. Hanging port which is installed to enable free rotation; A space having a polygonal shape, a linear guide formed to be in communication with one side of the space, linearly guided to guide the protrusions, and inclined to one side surface of the linear guides so as to first rotate the protrusion at a predetermined angle. The secondary part of the rotating part, the other side of the space part protrudes so that the vertex is directed toward the other end of the linear guide part, and the second rotating part for rotating the first rotated projection part again at a predetermined angle, the other part of the linear guide part so that the locking grooves interfere. The locking / rotation part formed at the side end and the second rotated protrusion is rotated three times to prevent lifting of the operating member and finally rotates the protrusion to move to the linear guide, and the position spaced apart from the secondary rotation part. Protruded lower than the secondary rotating part at the other side of the space part and a predetermined angle due to interference with the locking / rotating part The locking mouth is provided with an operation groove made of a fourth rotation part for rotating the lowered protrusion further in a third rotation state at a predetermined angle so that the protrusion is finally rotated by the locking / rotating part to move to the linear guide when the protrusion is raised. Includes; the position adjusting member coupled to the back of the fixed body to be inserted into the operation groove is operated, Pressing the operating member once, the position adjusting means fixes the lowered state of the operating member to stop the movement of the door while the fixing member is in close contact with the floor, and pressing the operating member once again the position adjusting means is operated member The stopper for the door, characterized in that the fixing state of the door is released by releasing the position fixed state of the operating member is raised by the elasticity of the return elastic member and the pressure elastic member so as to be spaced apart from the bottom. The door stopper according to claim 11, wherein a rotation protrusion is formed at the center of the protrusion.