TWM478057U - Oil-free automatic door closer - Google Patents

Description

Oil-free automatic door closer

The present invention relates to an oil-free automatic door closer, especially that no buffer oil is needed. The spring is pressed by a rotating shaft, and one of the positioning pins on the rotating shaft can generate resistance and rotate relative to a guiding inclined surface. When the user releases the door, the door is guided by gravity and the guiding inclined surface. The axis of the shaft is automatically rotated until the positioning pin is buckled into the positioning hole where the guiding slope is at the lowest point, and the door is automatically closed.

In the current building, an automatic door closer is usually installed on the door. After the door is opened, the user can automatically produce the effect of closing the door, and the user does not need to close the door to achieve convenient use.

A common automatic door closing device, such as the "automatic door closer structure with cushioning" shown in the new patent application No. M445064 of China, mainly consists of a main body, a limit seat, an elastic member, a driving rod, a fixing ring and a top, The lower connecting seat is composed of a movable door panel for interlocking the main body to rotate the driving rod in the main body, and the displacement of the limiting seat is driven to compress the elastic member, and the buffer oil is flowed into the bottom of the limiting seat to restore the elastic force when the elastic member returns. The limit seat is returned to the position, and the limit seat squeezes the oil to form a buffering effect, so that the limit seat has a buffer function when the drive rod and the main body are automatically closed. In the above structure, the main body is a hollow body, and the first and second locking portions are disposed on the top and bottom of the inner edge, and an oil passage is electrically connected to the first and second portions in the wall surface of the main body. At the locking portion, the oil passage is located at the first and second locking portions to form an oil outlet, and at the upper end of the second locking portion of the main body, at least one groove is provided, and the movable door panel is extended from the outer side of the main body Locking the fixed piece.

The above-mentioned automatic door closer for adjusting the closing speed is adjusted by The diameter of the oil port is used to adjust the size of the resistance when the buffer oil flows out, thereby achieving the purpose of adjusting the closing speed.

Due to the above-mentioned conventional door closer, its structure must use buffer oil, so in its In the overall structure, most oil seals must be installed to block the buffer oil from leaking out. However, the door closers are frequently used frequently, which makes it easy for the oil seal to wear and oil leakage, resulting in the loss of cushioning of the conventional door closer. It is known that buffer oil is used as a closing device for buffer substances, which has an unfavorable service life. In addition, since the structure must be kept sealed and oil-tight, the manufacturing cost is increased, and the manufacturing cost is increased. In view of this, the creators have researched and innovated to reveal the oil-free automatic door closer shown in the present invention.

The purpose of the present invention is to provide an oil-free automatic door closer which pushes a shaft with a spring force, so that the positioning pin on the shaft can be pressed against a guiding slope and rotated with the rotating shaft. The spring force of the spring creates a resistance between the positioning pin and the guiding bevel, so that the rotating shaft can automatically and slowly return to the guiding bevel. Therefore, the door closer disclosed in the present invention does not need to be filled with the buffer oil, and has no disadvantage of the conventional door closer oil leakage, and can reduce the manufacturing difficulty and the manufacturing cost.

The oil-free automatic door closer disclosed in the present invention is used for mounting on a door and a solid The guiding room comprises: a guiding seat, the guiding seat is provided with a shaft hole, and an end surface of the guiding seat surrounds the axis of the shaft hole to form a guiding inclined surface, and the guiding inclined surface is provided with at least a positioning hole, wherein one of the positioning holes is located at a lowest point of the horizontal position of the guiding inclined surface; an outer sleeve axially forming a sliding hole, the outer sleeve can be fastened to the door; a rotating shaft, Passing through the sliding hole of the outer sleeve, one end of which is inserted into the shaft hole of the guide seat, and rotates with the outer sleeve; a spring is supported between the rotating shaft and the outer sleeve, usually Driving the rotating shaft to be displaced in the direction of the guiding seat; and a positioning pin radially protruding outside the rotating shaft, generally straddle the guiding inclined surface, and rotating the rotating body with the rotating shaft; if yes, when the user opens the door The positioning pin of the rotating shaft is relatively slid from the low point of the guiding inclined surface to the high point, and can be sequentially buckled into each of the positioning holes, so that the user perceives the opening position and stops the door positioning. In addition to the above-mentioned parking position, when the user releases the door, the door is subjected to gravity and the guiding slope Lead, automatically by the rotation axis of the spindle, until the positioning pin snaps into the guiding inclined surface of the positioning hole in the lowest point so far, was automatically closed state.

The oil-free automatic door closer disclosed by the present invention, wherein the guide seat is fastened a fixing plate for fixing the guide to a fixing body by the fixing plate; the fixing object may be a floor, a door frame or a door of the building. The guiding inclined surface of the guiding seat is inclined from a high point to a low point, and the guiding inclined surface can be respectively radially concave according to the axis of the shaft hole at a position separated by 1/2π Positioning the hole so that one of the positioning holes is located at the lowest point of the guiding inclined surface, and is defined as the positioning point of the closing door.

The oil-free automatic door closer disclosed in the present invention, wherein the first end of the outer sleeve, At least one linkage plate is embedded, and a non-circular hole-shaped sliding hole is formed on the linkage plate to fit the rotation shaft in an intimate manner so that the rotation shaft can rotate with the outer sleeve.

The oil-free automatic door closer disclosed by the present invention, wherein the rotating shaft is locked and pushed The plate is arranged to be supported between the top end of the outer sleeve and the push plate, so that the spring is normally elastically pushed to displace the rotating shaft toward the guide.

The oil-free automatic door closer disclosed in the present invention, wherein the first end of the outer sleeve, a screw hole is arranged to lock an adjusting screw, the bottom end of the adjusting screw is pressed against the top end of the spring, and a tightening nut is locked on the adjusting screw; if the user can rotate the Adjust the screw to adjust the spring force applied by the spring to the shaft to adjust the speed of the automatic door closing.

The oil-free automatic door closer disclosed by the present invention further comprises a bearing member. The bearing member is a push-up bearing disposed between the outer sleeve and the guide seat, so that the opening and closing of the door can be smoothly rotated; the bearing member can include a first body, which is sleeved and fixed outside the outer sleeve The second body is sleeved and fixed to the outside of the guide; and a plurality of balls are interposed between the first and second bodies.

The oil-free automatic door closer disclosed by the present invention is made by the elastic energy of the spring The positioning pin of the rotating shaft is pressed against a guiding inclined surface to generate a resistance. After the user opens the door, the door can generate a downward component force on the guiding inclined surface due to gravity, so that the rotating shaft rotates. The effect of automatic door closing, because the new type does not need to be filled with buffer oil, in addition to the shortcomings of no oil leakage, the structure is simpler, the service life will be greatly improved, and the novelty of the novel is obvious.

The desirable entities of the present invention can be clarified by the following description and the accompanying drawings.

(10) ‧‧ ‧ guide

(11)‧‧‧ shaft hole

(110)‧‧‧Axis

(12)‧‧‧ Guided slope

(121)‧‧‧ positioning holes

(121a) ‧ ‧ ridge

(122) ‧ ‧ positioning holes

(123)‧‧‧ positioning holes

(124) ‧ ‧ positioning holes

(13) ‧‧‧Fixed plates

(20)‧‧‧Outer sleeve

(20a)‧‧‧ linkage board

(20b)‧‧‧ Cover

(21)‧‧‧Slide

(22)‧‧‧Adjusting screw

(23) ‧‧‧Forcing nuts

(24)‧‧‧ screw holes

(30) ‧‧ ‧ shaft

(31)‧‧‧ Push board

(40) ‧ ‧ spring

(41)‧‧‧ Pressing board

(50) ‧ ‧ Locating pins

(51) ‧ ‧ rings

(60) ‧ ‧ bearing components

(61) ‧‧‧First Ontology

(62) ‧ ‧ second ontology

(63)‧‧‧ balls

(70) ‧ ‧ fixed seat

(71) ‧‧‧Fixed holes

(F) ‧ ‧ ‧

(R) ‧ ‧ closing direction

(D) ‧ ‧ ‧

(G)‧‧‧Fixed objects

The first picture: is a three-dimensional exploded view of the new model.

The second picture is a perspective view of the new type after assembly.

The third figure is a partial section structure diagram of the second figure 3-3 direction.

Figure 4: A perspective view of the guide shown in the present invention.

The fifth picture shows the relationship between the positioning pin and the guide seat of the rotating shaft in the closed state.

The sixth figure is a schematic diagram of the relationship between the positioning pin and the guide seat of the rotating shaft in the state of opening the door.

Please refer to the first, second, third and fourth figures. The present invention relates to an oil-free automatic door closer for mounting between a door (D) and a fixture (G), which is a spring (40). Pushing the rotational displacement of the rotating shaft (30), the elastic force of the spring (40) enables the rotating shaft (30) to automatically homing along the guiding inclined surface (12), and the disclosed door closer does not need to be filled. Buffer oil, without the drawbacks of the conventional door closer oil leakage.

The oil-free automatic door closer disclosed in the first, second, third and fourth figures comprises: a guide seat (10), the guide seat (10) is provided with a shaft hole (11), and An end surface of the guide seat (10) surrounds the axis (110) of the shaft hole (11) to form a guiding slope (12), and at least one positioning hole (121) is disposed on the guiding slope (12). 122, 123, 124), and one of the positioning holes (121) is located at the lowest point of the horizontal position of the guiding bevel (12); an outer sleeve (20) axially forms a sliding hole (21), The outer sleeve (20) can be fastened to the door (D) or the fixed object (G); a rotating shaft (30) is placed on the sliding hole (21) of the outer sleeve (20), and one end thereof is Wearing a shaft hole (11) of the guide seat (10) and rotating with the outer sleeve (20); a spring (40) supporting the shaft (30) and the outer sleeve (20) Between the two, the shaft (30) is normally displaced in the direction of the guide (10); and a positioning pin (50) is radially protruded from the shaft (30), and is normally placed on the guiding slope ( 12) upper, with the rotating shaft (30) interlocking the rotating person; if yes, when the user opens the door operation, as shown in the fifth to sixth figures, located in the rotating shaft (3) 0) The positioning pin (50) on the upper side slides relatively high from the low point of the guiding inclined surface (12), and sequentially snaps into each positioning hole. (122, 123 or 124), let the user perceive the door opening position; after the user releases the door, the door is guided by the gravity (W) and the guiding bevel (12), and according to the rotating shaft (30) The axis is automatically rotated in the closing direction (R) until the positioning pin (50) is snapped into the positioning hole (121) where the guiding bevel (12) is at the lowest point, as shown in the fifth figure, and automatically Closed state.

As shown in the first and fourth figures, the oil-free automatic door closer disclosed in the present invention, wherein The guide seat (10) is fastened with a fixing plate (13) for fixing the guide seat (10) to a fixing object (G) or a door (D) by the fixing plate (13); The object (G) can be the floor and door frame of the building. The guiding slope (12) of the guiding seat (10) is inclined from a high point to a low point, and the guiding inclined surface (12) can be based on the axis (110) of the shaft hole (11). Positioning holes (121, 122, 123, 124) are radially recessed at positions 1/2π apart, such that one of the positioning holes (121) is located at the lowest point of the horizontal plane of the guiding bevel (12), and is defined Become the anchor point of the closing.

As shown in the first and third figures, the oil-free automatic door closer disclosed in the present invention, wherein The first end of the outer sleeve (20) is embedded with at least one linkage plate (20a), and the sliding plate (21) is non-circularly formed on the linkage plate (20a) to fit the same The shaft (30) is internal to allow the shaft (30) to rotate with the outer sleeve (20).

The oil-free automatic door closer disclosed by the present invention, wherein the rotating shaft (30) is locked a push plate (31), the spring (40) is supported between the top end of the outer sleeve (20) and the push plate (31), so that the spring (40) elastically pushes the rotating shaft (30) Displaced in the direction of the guide (10).

The oil-free automatic door closer disclosed by the present invention, wherein the outer sleeve (20) is the first a screw hole (24) is formed, and an adjusting screw (22) is locked, and the bottom end of the adjusting screw (22) is pressed against a pressing plate (41) which is placed on the top end of the spring (40). And locking the nut (23) on the adjusting screw (22); if the user can rotate the adjusting screw (22) to adjust the The elastic force applied by the spring (40) to the rotating shaft (30) can adjust the resistance generated when the positioning pin (50) and the guiding inclined surface (12) are relatively displaced to adjust the speed of the automatic closing. The outer sleeve (20) is fixed to a cover plate (20b) at the first end, and the screw hole (24) is disposed on the cover plate (20b).

As shown in the first, second and third figures, the oil-free automatic door closer disclosed in the present invention, Further comprising a bearing member (60), the bearing member (60) is a thrust bearing disposed between the outer sleeve (20) and the guide seat (10), so that the opening and closing of the door can be smoothly rotated; the bearing The member (60) may include a first body (61) that is sleeved and fixed to the outer sleeve (20); the second body (62) is sleeved and fixed to the guide (10). And a majority of balls (63) between the first and second bodies (61, 62).

The oil-free automatic door closer disclosed by the present invention, wherein the outer sleeve (20) can be Welding or embedding, and fixing with a door (D) or a fixed object (G); or as shown in the first and second figures, sleeve and fix at least one fixing seat (70) on the outer sleeve (20), The fixing base (70) is provided with a plurality of fixing holes (71) for locking the fixing seat (70) to the door (D) or the fixing object (G) by screws, so that the outer sleeve (20) The rotator can be integrally linked with the door (D) or the fixture (G).

The oil-free automatic door closer disclosed by the present invention, wherein the outer edge of the positioning pin (50) The ring (51) is sleeved to make a rolling motion between the positioning pin (50) and the guiding bevel (12), which makes the operation of the present invention smoother.

The oil-free automatic door closer disclosed in the present invention can be used for the guide seat (10) Fixed on the fixed object (G) such as the floor, as shown in the second and third figures, and then the outer sleeve (20) is fixed on the door (D) by the fixing seat (70) when the user performs the door opening operation. The guide seat (10) and the rotating shaft (30) are also relatively rotated, and the positioning pin (50) on the rotating shaft (30) is gradually climbed from the guiding inclined surface (12) of the guiding seat (10), and is simultaneously linked. The shaft (30) rises and compresses the spring (40) when the user holds After the door is opened to an angle, the rotating shaft (30) is continuously urged toward the guiding seat (10) by the elastic force of the spring (40), as shown in the sixth figure, so that the positioning pin (50) Correspondingly, one of the positioning holes (122, 123 or 124) on the guiding bevel (12) can be buckled, and the user can thus perceive that the door has been opened to an positioning point, for example, 90, 180 or -90 degrees. The door is parked in this position to keep the door open, so that it can be used for moving goods for a long time.

Generally, in the operation of opening the door, the opening angle is usually less than 90 degrees. That is, the positioning pin (50) on the rotating shaft (30) is placed on the guiding inclined surface (12) of the guide seat (10) after being disengaged from the positioning hole (121) of the lower point, and is not buckled into the other. Positioning the hole (122, 123 or 124), when the user releases the door, the gravity (W) of the door on the guiding bevel (12) will produce a component (F) to the lower part, which is driven by the component force. The rotating shaft (30) rotates in the closing direction (R) until the positioning pin (50) is buckled into the positioning hole (121) where the guiding inclined surface (12) is at the lowest horizontal position, that is, the door is driven to slowly and automatically close the door, and Stop at the correct closing position, that is, return to the state shown in the fifth figure.

As shown in the first and fourth figures, the oil-free automatic door closer disclosed in the present invention, wherein On the guiding slope (12), at a position on one side or both sides of the positioning hole (121) at the lowest horizontal position, a ridge portion (121a) is respectively protruded, so that the door is in the operation of automatically closing the door. Near the door closing position, the locating pin (50) will pass through the ridge portion (121a) to slow down the speed before the door is completely closed, thereby avoiding the accident of being pinched by the door.

The oil-free automatic door closer disclosed by the present invention, by the elastic energy of the spring (40), The positioning pin (50) protruding from the rotating shaft (30) is pressed against the guiding inclined surface (12) of the guiding seat (10), and the door can be guided by gravity (W) after the user opens the door. A downward component (F) is generated on the inclined surface (12) to rotate the shaft (30) according to the axis (110) of the shaft hole (11), thereby automatically closing the door, since the present invention does not require filling Buffer oil, in addition to the shortcomings of no oil leakage, its structure is simpler and cost It is cheaper and its service life will be greatly improved, and it will show the novelty of this new type.

The structure and shape disclosed in the present invention can be modified and applied without departing from the spirit and scope of the present invention, and the present invention is not limited to its implementation.

(10) ‧‧ ‧ guide

(11)‧‧‧ shaft hole

(110)‧‧‧Axis

(12)‧‧‧ Guided slope

(121)‧‧‧ positioning holes

(121a) ‧ ‧ ridge

(122) ‧ ‧ positioning holes

(123)‧‧‧ positioning holes

(124) ‧ ‧ positioning holes

(13) ‧‧‧Fixed plates

(20)‧‧‧Outer sleeve

(20a)‧‧‧ linkage board

(20b)‧‧‧ Cover

(21)‧‧‧Slide

(22)‧‧‧Adjusting screw

(23) ‧‧‧Forcing nuts

(24)‧‧‧ screw holes

(30) ‧‧ ‧ shaft

(31)‧‧‧ Push board

(40) ‧ ‧ spring

(41)‧‧‧ Pressing board

(50) ‧ ‧ Locating pins

(51) ‧ ‧ rings

(60) ‧ ‧ bearing components

(61) ‧‧‧First Ontology

(62) ‧ ‧ second ontology

(63)‧‧‧ balls

(70) ‧ ‧ fixed seat

(71) ‧‧‧Fixed holes

Claims (10)

An oil-free automatic door closer includes: a guide seat, the guide seat is provided with a shaft hole, and an end surface of the guide seat surrounds the axis of the shaft hole to form a guiding slope on the guiding slope Having at least one positioning hole, wherein one of the positioning holes is located at a lowest point of the horizontal plane of the guiding slope; an outer sleeve axially forming a sliding hole; and a rotating shaft disposed on the outer sleeve a hole, one end of which is placed in the shaft hole of the guide seat, and rotates with the outer sleeve; a spring is supported between the rotating shaft and the outer sleeve, and normally drives the rotating shaft to be displaced toward the guiding seat And a positioning pin, the radial protrusion is disposed outside the rotating shaft, and is normally placed on the guiding inclined surface, and the rotating person is linked with the rotating shaft. The oil-free automatic door closer according to claim 1, wherein the guide is fastened to a fixed plate. The oil-free automatic door closer according to claim 1, wherein the guide slope of the guide is inclined from a high point to a low point, and the guide slope is spaced apart according to the axis of the shaft hole. At a position of 1/2π, positioning holes are respectively formed in the radial recess so that one of the positioning holes is located at the lowest point of the horizontal plane of the guiding inclined surface. The oil-free automatic door closer according to claim 1, wherein the first end of the outer sleeve is embedded with at least one linkage plate, and a non-circular hole is formed on the linkage plate to fit the ground The shaft is sleeved so that the shaft can rotate with the outer sleeve. The oil-free automatic door closer according to claim 1, wherein the rotating shaft is coupled to a push plate so that the spring is supported between the top end of the outer sleeve and the push plate. The oil-free automatic door closer according to claim 1, wherein the first end of the outer sleeve is provided with a cover plate, and a screw hole is arranged on the cover plate to lock an adjusting screw to make the bottom of the adjusting screw The end is pressed against a pressing plate which is placed on the top end of the spring, and a tightening nut is locked on the adjusting screw. The oil-free automatic door closer according to claim 1, further comprising a bearing member, wherein the bearing member is a thrust bearing, and is disposed between the outer sleeve and the guide, the bearing member comprises: a first body, which is sleeved and Fixed to the outside of the outer sleeve; the second body is sleeved and fixed to the outside of the guide; and a plurality of balls are interposed between the first and second bodies. The oil-free automatic door closer according to claim 1, wherein the outer sleeve sleeves and fixes at least one fixing seat, and the fixing seat is provided with a plurality of fixing holes for locking the fixing seat by screws The door or fixture allows the outer sleeve to integrally engage the rotator with the door or fixture. The oil-free automatic door closer according to claim 1, wherein the outer edge of the positioning pin is sleeved by a ring. The oil-free automatic door closer according to claim 3, wherein the guiding slope is located at a position on one side or both sides of the positioning hole at the lowest horizontal position, respectively, and a ridge portion is protruded.