CN114790860B - Adjustable door leaf limiter of digital media classroom double door - Google Patents

Abstract

The utility model provides a digital media classroom two adjustable door leaf limiters that open door, includes stopper main part, upper slider, big spring, elastic rubber piece, lower slider, first strong magnet steel, second strong magnet steel, floor panel; the stopper is characterized in that the upper part and the left side and the right side of the stopper main body are respectively provided with a lug, and screw holes are formed in the lugs; a cavity is arranged in the limiter main body, an opening of the cavity is arranged below the limiter main body, a cavity through hole is formed above the limiter main body, and the cavity through hole is communicated with the cavity; the diameter size of the cavity through hole is larger than that of the screw rod; the top of the cavity is provided with a first spring ferrule; the circle center of the first spring ferrule and the circle center of the cavity through hole are positioned on the same vertical line; the upper sliding block is provided with a second spring ferrule and a screw rod, the lower surface of the upper sliding block is adhered with an elastic rubber block, and the lower surface of the elastic rubber block is adhered with the lower sliding block. The invention utilizes the memory slow reset function of elastic rubber, and can reduce the reset noise of the device.

Description

An adjustable door leaf limiter for double doors in a digital media classroom

Technical field

The invention relates to building hardware accessories, and in particular to an adjustable door leaf limiter for double doors in a digital media classroom.

Background technique

Digital media classrooms and training rooms mostly use large space classrooms. In order to facilitate the entry and exit of teachers and students in large space classrooms and meet fire safety regulations, the doors installed are double-leaf swing doors. Classrooms with double swing doors usually keep the doors closed during class to keep the room quiet. However, if students come in or out, loud noises will often be made, which not only embarrasses the students who enter, but also affects the learning of teachers and students in the room. If the door is opened, the indoor and outdoor sounds are not separated from each other, which is still not conducive to indoor teachers' teaching and students' quiet learning. In addition, in indoor spaces with air conditioning, it will also cause a large waste of electricity. Therefore, it is very necessary to design a door leaf limiter with silent function.

Contents of the invention

In view of the shortcomings of the existing technology, the present invention provides an adjustable door leaf limiter for a digital media classroom double door.

An adjustable door leaf limiter for double doors in a digital media classroom, including a limiter body, an upper slider, a large spring, an elastic rubber block, a lower slider, a first strong magnetic steel and a second strong magnetic steel; it is characterized by: , the upper and left sides of the limiter body are respectively provided with bumps, and screw holes are provided on the bumps; a cavity is provided in the limiter body, and the opening of the cavity is below the limiter body, and the limiter A cavity through hole is provided above the main body of the device, and the cavity through hole communicates with the cavity; the diameter of the cavity through hole is larger than the diameter of the screw rod; a first spring ferrule is provided at the top of the cavity; the first spring sleeve The center of the circle and the center of the cavity through hole are on the same vertical line; a second spring ferrule and a screw rod are provided above the upper slide block, and the lower side of the upper slide block is bonded with the elastic rubber block. The lower part of the elastic rubber block is bonded with the lower slide. There is a central through hole in the middle of the elastic rubber block, and an internal threaded hole in the middle of the lower slide. The second spring ferrule, screw rod, central through hole and thread The centers of the holes are on the same vertical line; the nail heads of the countersunk screws are covered with noise reduction rubber sleeves. The countersunk screws pass through the middle hole of the first strong magnetic steel and screw into the internal threaded hole to fix the first strong magnetic steel. Under the lower slide; a large spring is put on the screw rod and passes through the cavity through hole from the bottom of the cavity, and then screwed into the nut to fix it; the second strong magnetic steel is fixed on the inner turntable, and the second strong magnetic steel The diameter is smaller than the radius of the inner turntable; there is a direction adjustment groove in the middle of the top surface of the inner turntable, and an annular limit groove is provided at the upper end of the outer edge. There is a round hole on the side of the inner turntable, and a small spring and stainless steel marble are provided in the round hole. , the diameter of the stainless steel marbles and small springs is smaller than the diameter of the round hole, the stainless steel marbles will protrude outside the round hole under the action of the small springs; the inner turntable is placed in the inner cavity of the tray, and the inner turntable is limited by the edge bar. Use a tool to apply rotational external force in the direction adjustment groove to make the inner turntable rotate in the inner cavity of the tray; the tray is fixed in the preset hole of the tray on the floor panel; the main body of the limiter is fixed under the door leaf with screws.

The length and width of the upper slider, elastic rubber block and lower slider are smaller than the length and width of the cavity, and the upper slider, elastic rubber block and lower slider can slide up and down in the cavity.

The elastic rubber block has a reset function.

When the second strong magnetic steel is limited and fixed by stainless steel marbles, the connecting line between the center of the circle of the second strong magnetic steel and the center of the inner turntable intersects with the hinge rotation axis on the door leaf. After the inner turntable is rotated, the second strong magnetic steel The line connecting the center of the circle of the magnetic steel and the center of the inner turntable still intersects with the axis of the hinge rotation axis on the door leaf.

Two limit holes are provided on the inner wall of the inner cavity of the tray. The size of the limit holes matches the stainless steel marbles. The straight line connecting the center points of the two limit holes intersects with the center line of the tray.

The opposite surfaces of the first ferromagnetic steel and the second ferromagnetic steel have opposite magnetic properties.

The length of the large spring is greater than or equal to the length of the screw rod.

The length of the small spring is greater than the depth of the round hole plus the diameter of the stainless steel marble.

Adopting the technical solution of the present invention has the following beneficial effects:

1) This invention utilizes the memory slow reset function of elastic rubber to reduce the reset noise of the device;

2) When the two magnets of the present invention are attracted to each other, a noise-reducing rubber sleeve is separated between the two magnets, which can not only prevent the two magnets from being damaged by collision, but also improve the friction coefficient and achieve a mute effect;

3) This invention uses a nut to adjust the distance between the noise reduction rubber sleeve and the magnetophilic block to achieve the best adsorption effect and mute effect when limiting the door leaf;

4) The limit function of the door leaf of the present invention can be opened or closed as needed. After the limit function of the door leaf is turned off, the opening and closing of the door leaf will not be affected by any limit device, just as if it is not installed.

Description of the drawings

Figure 1 is a perspective view of the present invention (the state in which the first strong magnetic steel and the second strong magnetic steel are adsorbed together);

Figure 2 is a schematic structural diagram of the present invention;

Figure 3 is a schematic structural diagram of the present invention (viewed from the bottom side);

Figure 4 is a partial cross-sectional view showing the internal structure of the present invention (the state in which the first strong magnetic steel and the second strong magnetic steel are adsorbed together);

Figure 5 is a schematic diagram showing that the main body of the limiter of the present invention is installed on the door leaf, and the tray is installed on the floor. When the door leaf is opened or closed, the first strong magnetic steel passes through the second strong magnetic steel, and the two are adsorbed together;

Figure 6 is a schematic diagram showing that after the inner turntable of the present invention is rotated 180 degrees and the door leaf is opened or closed, the first strong magnetic steel and the second strong magnetic steel will not be adsorbed together;

In the figure: limiter body 10, bump 11, screw hole 12, cavity 13, first spring ferrule 14, cavity through hole 15, upper slider 20, second spring ferrule 21, screw rod 22, Nut 23, large spring 30, elastic rubber block 40, center through hole 41, lower slide 50, internal thread hole 51, countersunk head screw 52, noise reduction rubber sleeve 53, first strong magnetic steel 60, second strong magnet Steel 70, inner turntable 71, edge bar 72, pallet 73, stainless steel marble 74, small spring 75, direction adjustment groove 76, annular limit groove 77, pallet inner cavity 78, round hole 79, floor panel 80, pallet pre-roller Hole 81 and door leaf 90 are provided.

Detailed ways

Below, the present invention will be further described with reference to the accompanying drawings and examples: As shown in Figures 1 to 6, an adjustable door leaf limiter for a digital media classroom double door includes a limiter body 10, an upper slider 20, a large The spring 30, the elastic rubber block 40, the lower block 50, the first strong magnetic steel 60 and the second strong magnetic steel 70; it is characterized in that the upper and left sides of the limiter body 10 are respectively provided with bumps 11, Screw holes 12 are provided on the bump 11; a cavity 13 is provided in the stopper body 10. The opening of the cavity 13 is below the stopper body 10, and a cavity through hole 15 is provided above the stopper body 10. , the cavity through hole 15 is connected with the cavity 13; the diameter of the cavity through hole 15 is larger than the diameter of the screw rod 22; a first spring ferrule 14 is provided on the top of the cavity 13; the center of the first spring ferrule 14 It is on the same vertical line as the center of the cavity through hole 15; the upper slider 20 is provided with a second spring ferrule 21 and a screw rod 22, and the lower surface of the upper slider 20 is bonded to the elastic rubber block 40 Together, the bottom of the elastic rubber block 40 is bonded to the lower block 50. The elastic rubber block 40 is provided with a central through hole 41 in the middle, and the lower block 50 is provided with an internal threaded hole 51 in the middle; the second spring ferrule 21. The centers of the screw rod 22, the central through hole 41 and the internal threaded hole 51 are on the same vertical line; the head of the countersunk head screw 52 is covered with a noise reduction rubber sleeve 53, and the countersunk head screw 52 passes through the first strong magnetic The middle hole of the steel 60 is screwed into the internal threaded hole 51 to fix the first strong magnetic steel 60 below the lower slide 50; after the screw rod 22 is put on the large spring 30 and passes through the cavity through hole 15 from the bottom of the cavity 13, Screw it into the nut 23 and fix it; the second strong magnetic steel 70 is fixed on the inner turntable 71, the diameter of the second strong magnetic steel 70 is smaller than the radius of the inner turntable 71; a direction adjustment groove is provided in the middle of the top surface of the inner turntable 71 76. An annular limiting groove 77 is provided at the upper end of the outer edge. A round hole 79 is provided on the side of the inner turntable 71. A small spring 75 and a stainless steel marble 74 are provided in the circular hole 79. The diameter of the stainless steel marble 74 and the small spring 75 is less than The diameter of the round hole 79, the stainless steel marble 74 will protrude outside the round hole 79 under the action of the small spring 75; the inner turntable 71 is placed in the inner cavity 78 of the pallet, and the inner turntable 71 is restricted by the edge holder 72, using a tool Applying rotational external force in the direction adjustment groove 76 can cause the inner rotating disk 71 to rotate in the tray inner cavity 78; the tray 73 is fixed in the tray preset hole 81 of the floor panel 80; the limiter body 10 is screwed to the door leaf 90 below.

The length and width of the upper slider 20, the elastic rubber block 40, the lower slider 50 and the first ferromagnetic steel 60 are smaller than the length and width of the cavity 13. The upper slider 20, the elastic rubber block 40, The lower slide 50 and the first strong magnetic steel 60 can slide up and down in the cavity 13 .

The elastic rubber block 40 has a reset function.

When the second strong magnetic steel 70 is limited and fixed by the stainless steel marbles 74, the line connecting the center of the second strong magnetic steel 70 and the center of the inner turntable 71 intersects with the hinge rotation axis on the door leaf 90, and the inner turntable 71 is rotated. After 180 degrees, the line connecting the center of the circle of the second strong magnetic steel 70 and the center of the inner turntable 71 still intersects with the axis of the hinge rotation axis on the door leaf 90 .

Two limit holes are provided on the inner wall of the inner cavity 78 of the tray. The size of the limit holes matches the stainless steel marbles 74 . The straight line connecting the center points of the two limit holes intersects with the center line of the circle center of the tray 73 .

The opposite surfaces of the first ferromagnetic steel 60 and the second ferromagnetic steel 70 have opposite magnetic properties.

After the stainless steel marble 74 falls into the limit hole on the inner wall of the inner cavity 78 of the tray and is limited and fixed, the first strong magnetic steel 60 covers the second strong magnetic steel 70 and is attracted together to squeeze the noise reduction rubber sleeve 53. The friction force between the first strong magnetic steel 60 and the second strong magnetic steel 70 will be increased; when the door leaf 90 is moved, the friction force cannot drive the inner turntable 71 to rotate.

The length of the large spring 30 is greater than or equal to the length of the screw rod 22 .

The length of the small spring 75 is greater than the sum of the depth of the round hole 79 and the diameter of the stainless steel marble 74 .

The present invention utilizes the memory slow reset function of elastic rubber to reduce the reset noise of the device; when two magnets of the present invention attract each other and are close to each other, a noise-reducing rubber sleeve is separated between the two magnets, which can prevent the two magnets from causing Collision damage can not only increase the friction coefficient, but also achieve a mute effect; the invention uses a nut to adjust the distance between the noise reduction rubber sleeve and the electrophilic magnet block to achieve the best adsorption effect and muteness when limiting the door leaf. Effect: The limit function of the door leaf according to the present invention can be opened or closed as needed. After the limit function of the door leaf is turned off, the opening and closing of the door leaf will not be affected by any limit device, just like it is not installed.

The above-described embodiments of the present invention are intended to illustrate typical implementations of the present invention, but are not intended to limit the implementation of the present invention. Obvious changes derived from the tips of the embodiments of the present invention are still within the scope of rights protection of the present invention.

Claims (8)

1. An adjustable door leaf limiter for double doors in a digital media classroom, including a limiter body (10), an upper slider (20), a large spring (30), an elastic rubber block (40), and a lower slider (50) ), the first strong magnetic steel (60) and the second strong magnetic steel (70); characterized in that, the upper and left sides of the limiter body (10) are respectively provided with bumps (11), and the bumps ( 11) is provided with screw holes (12); a cavity (13) is provided in the stopper body (10), and the opening of the cavity (13) is below the stopper body (10), and the stopper body (10) There is a cavity through hole (15) above the cavity (10), and the cavity through hole (15) is connected with the cavity (13); the diameter of the cavity through hole (15) is larger than the diameter of the screw rod (22); the cavity through hole (15) is larger than the diameter of the screw rod (22); A first spring ferrule (14) is provided at the top of the cavity (13); the center of the first spring ferrule (14) and the center of the cavity through hole (15) are on the same vertical line; the upper slider A second spring ferrule (21) and a screw rod (22) are provided on the top of the upper slide block (20). The bottom of the upper slide block (20) is bonded with the elastic rubber block (40). The bottom of the elastic rubber block (40) Bonded with the lower slider (50), the elastic rubber block (40) is provided with a central through hole (41) in the middle, and the lower slider (50) is provided with an internal thread hole (51) in the middle; the second spring sleeve The centers of the circle (21), screw rod (22), central through hole (41) and internal threaded hole (51) are on the same vertical line; the nail head cover of the countersunk head screw (52) has a noise reduction rubber sleeve ( 53); The opposite surfaces of the first strong magnetic steel (60) and the second strong magnetic steel (70) have opposite magnetic properties; the countersunk head screw (52) passes through the middle hole of the first strong magnetic steel (60) and is screwed in The threaded hole (51) fixes the first strong magnetic steel (60) below the lower slide (50); the screw rod (22) is put on the large spring (30) and passes through the cavity from the bottom of the cavity (13). After the hole (15), screw it into the nut (23) and fix it; the diameter of the second strong magnetic steel (70) is smaller than the radius of the inner turntable (71); the second strong magnetic steel (70) is fixed on the inner turntable (71) 71), a direction adjustment groove (76) is provided in the middle of the top surface of the inner turntable (71), and an annular limit groove (77) is provided at the upper end of the outer edge. A round hole (79) is provided on the side, and a small spring (75) and a stainless steel marble (74) are provided in the round hole (79). The diameter of the stainless steel marble (74) and the small spring (75) is smaller than that of the round hole (79). diameter, the stainless steel marble (74) will protrude outside the round hole (79) under the action of the small spring (75); the inner turntable (71) is placed in the inner cavity (78) of the tray, and the inner turntable (71) is pressed Under the restriction of the side strip (72), use a tool to apply rotational external force in the direction adjustment groove (76), so that the inner turntable (71) can rotate in the inner cavity (78) of the tray; the tray (73) is fixed on the floor panel (73) 80) in the preset hole (81) of the tray; the stopper body (10) is screwed under the door leaf (90); the stainless steel marble (74) falls into the limit hole on the inner wall of the tray inner cavity (78) The middle quilt will be limited and fixed. Rotate the inner turntable (71) 180 degrees. The stainless steel marbles (74) on the inner turntable (71) will fall into another limit hole on the inner wall of the inner cavity (78) of the tray and be The limit is fixed again. 2. The adjustable door leaf limiter according to claim 1, characterized in that after the stainless steel marble (74) falls into the limit hole on the inner wall of the tray inner cavity (78) and is limited and fixed, the first strong The magnetic steel (60) covers the second strong magnetic steel (70) and is adsorbed together, which will squeeze the noise reduction rubber sleeve (53) and increase the friction between the two, moving the door leaf (90). The friction force formed by the adsorption of the steel (60) and the second strong magnetic steel (70) together cannot drive the inner turntable (71) to rotate. 3. The adjustable door leaf stopper according to claim 1, characterized in that the upper slider (20), the elastic rubber block (40), the lower slider (50) and the first strong magnetic steel (60) ) are smaller than the length and width of the cavity (13), the upper slider (20), the elastic rubber block (40), the lower slider (50) and the first strong magnetic steel (60) can Slide up and down in cavity (13). 4. The door leaf limiter according to claim 1, characterized in that the elastic rubber block (40) has a reset function. 5. The adjustable door leaf limiter according to claim 1, characterized in that two limit holes are provided on the inner wall of the inner cavity of the tray (78), and the size of the limit holes matches the stainless steel marbles (74). , the straight line connecting the center points of the two limiting holes intersects with the center line of the circle center of the pallet (73). 6. An adjustable door leaf limiter for double doors in a digital media classroom according to claim 1, characterized in that the length of the large spring (30) is greater than or equal to the length of the screw rod (22). 7. The adjustable door leaf stopper according to claim 1, characterized in that the length of the small spring (75) is greater than the sum of the depth of the round hole (79) plus the diameter of the stainless steel marble (74). 8. An adjustable door leaf limiter for double doors in a digital media classroom according to claim 1, characterized in that the first strong magnetic steel (60) covers the second strong magnetic steel (70), and the first strong magnetic steel (60) covers the second strong magnetic steel (70). When the distance between them is less than 3 mm, the mutual attraction force between the first strong magnetic steel (60) and the second strong magnetic steel (70) can pull the elastic rubber block (40) to deform.