CN216517489U

CN216517489U - Automatic door and window closer

Info

Publication number: CN216517489U
Application number: CN202120794757.8U
Authority: CN
Inventors: 赵锦攀
Original assignee: Zhaoqing Yuxing Gated Co ltd
Current assignee: Zhaoqing Yuxing Gated Co ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2022-05-13
Anticipated expiration: 2031-04-16

Abstract

The utility model discloses an automatic door and window closer which comprises a shell, a cam assembly, a piston pull rod, a piston and a spring, wherein the cam assembly, the piston pull rod, the piston and the spring are all arranged in the shell, the cam assembly comprises a cam, a cam outer frame and two idler wheels, one end of the cam is arranged in the shell, the other end of the cam penetrates through the shell and extends out, the cam outer frame is provided with mounting holes, the two idler wheels are arranged in the mounting holes, the two idler wheels are respectively positioned at two sides of the cam, one end of the piston pull rod is fixed with the cam outer frame, the other end of the piston pull rod is connected with the piston, one end of the spring is abutted against the piston, the other end of the spring is abutted against the shell, and a first oil cavity and a second oil cavity which are communicated with each other are respectively arranged at two sides of the piston. When door and window opened the biggest opening angle, because the rebound force of spring does not act on the cam frame, the arc of cam axis department and the arc of gyro wheel can not remain motionless, along with the removal of cam frame, compels the cam to rotate to can realize that the cam drives door and window's automatic re-setting closes.

Description

Automatic door and window closer

Technical Field

The utility model belongs to a closer, and particularly relates to an automatic door and window closer.

Background

When the automatic door and window closer is used, a door and a window are arranged on a rotating shaft of the cam, the cam is driven to rotate through the rotation of the door and the window, and the opening angle of the door and the window is positioned through the cam during positioning. When the existing cam is installed, the cam is directly contacted with the piston and pushes the piston to move through the cam; when the farthest end of the cam is contacted with the piston, the spring in the closer is compressed under the action of the piston, and the door and the window are positioned under the action of the cam; when the door leaf continues to rotate and drives the cam to rotate, the cam directly rotates over the highest point, and the closing device is internally provided with the piston which is slower than the cam in speed due to the action of hydraulic pressure and the spring, so that the cam is separated from the piston easily, and the normal use of the cam is influenced. Meanwhile, the existing cam is only suitable for installing left or right doors and windows singly, the application range is limited, and the production cost is increased; when the door and window is opened to the 90-degree position, the cam positioning part and the piston limiting part are staggered under the action of external force, and then the door and window is closed under the action of the rebound force of the spring.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide an automatic type window and door closer capable of solving at least one of the above-mentioned problems.

According to one aspect of the utility model, the automatic door and window closer comprises a shell, a cam assembly, a piston pull rod, a piston and a spring, wherein the cam assembly, the piston pull rod, the piston and the spring are all arranged in the shell, the cam assembly comprises a cam, a cam outer frame and two rollers, one end of the cam is arranged in the shell, the other end of the cam penetrates through the shell and extends out, the cam outer frame is provided with a mounting hole, the two rollers are arranged on the cam outer frame, the cam is arranged in the mounting hole, the two rollers are respectively positioned on two sides of the cam and are arranged corresponding to the cam, one end of the piston pull rod is fixed with the cam outer frame, the other end of the piston pull rod is connected with the piston, one end of the spring is abutted to the piston, the other end of the spring is abutted to the shell, and a first oil cavity and a second oil cavity which are communicated with each other side of the piston.

The utility model has the beneficial effects that: the cam outer frame is arranged, and the piston pull rod is fixed with the cam outer frame, so that when the door leaf drives the cam to rotate, the cam pushes the cam outer frame to move, and the cam outer frame pushes the piston pull rod to move together, so that the piston keeps moving synchronously, the phenomenon that the cam is separated from the piston due to the fact that the piston return speed is slower than the cam speed under the action of hydraulic pressure and a spring is effectively avoided, the normal use of the cam is guaranteed, and the effect of buffering the closing speed of the door window is achieved; through locating the cam frame, can install the cam frame at the casing inboard to hug closely with the inner wall of casing and prevent that the cam frame from droing can, thereby reduced the cam greatly and stretched out the position of casing and the distance of the corresponding side reason of casing, can realize the seamless concatenation of door and window installation back with door frame or window frame, avoided door and window to appear the tong phenomenon when using, improved the security of using. Simultaneously, be equipped with two gyro wheels on the cam frame, consequently, when door and window opened the biggest opening angle, because the rebound force of spring does not act on the cam frame, the arc of cam axis department and the arc of gyro wheel can not remain motionless, along with the removal of cam frame, forces the cam rotation to can realize that the cam drives the automatic re-setting of door and window and close.

In some embodiments, a clamping groove is formed in the front side of the cam outer frame, and a connector is arranged at one end of the piston pull rod and clamped into the clamping groove. Therefore, the clamping groove is formed, the piston rod can be fixed in the clamping groove through the connector, and the piston rod is conveniently connected with the cam outer frame.

In some embodiments, two rollers are respectively disposed at the front end and the rear end of the cam outer frame, and one of the rollers is located between the slot and the mounting hole. Therefore, the installation of the roller on the cam outer frame can be facilitated, and the roller can be conveniently acted with the cam.

In some embodiments, the cam comprises a body, a rotating shaft and an installation shaft, the rotating shaft and the installation shaft are respectively arranged at two ends of the body, the installation shaft is matched with the shell, the rotating shaft is located on the outer side of the shell, the body is matched with the installation hole, one side of the body is provided with a protruding portion, one opposite side of the body is provided with a groove, when the protruding portion is abutted to one of the rollers, the groove is matched with the other roller, the left side and the right side of the protruding portion are respectively provided with a limiting protrusion, and when the opening angle of the door and window is 90 degrees, the limiting protrusions on two sides are abutted to the two rollers respectively. Therefore, when the opening angle of the door and window is 90 degrees, the arc-shaped part of the limiting bulge acts with the roller, and because the two contact parts are both in a convex arc shape, when the spring acts on the cam outer frame, the roller and the cam are forced to rotate, so that the automatic closing reset of the door and window is convenient to realize.

In some embodiments, the outer side of the piston is fitted with a nitrile seal. Therefore, the stability of piston sealing is improved by arranging the butyronitrile sealing ring, namely the soft sealing ring.

In some embodiments, the automatic door/window closer further includes a connection screw, the other end of the piston rod is provided with a threaded hole, one end of the connection screw is located in the piston, and the other end of the connection screw extends out of the piston and then is matched with the threaded hole of the piston rod. Therefore, the piston and the piston pull rod are conveniently connected and fixed through the connecting screw.

In some embodiments, the automatic door and window closer further comprises a check valve having one end abutting the piston and the other end abutting the spring. Therefore, the check valve is arranged, so that the hydraulic oil in the two oil cavities can flow rapidly when the door is opened, and the hydraulic oil in the two oil cavities can flow slowly when the door is closed; meanwhile, when the piston moves, the one-way valve is pushed to move, so that the spring is pushed through the one-way valve, and meanwhile, the acting force of the spring is conveniently transmitted to the piston through the one-way valve.

In some embodiments, the automatic door and window closer further comprises a rear cover and a force adjusting device, the force adjusting device comprises a force adjusting plate and a force adjusting rod, the rear cover is matched with the end face of the shell, a threaded hole is formed in the force adjusting plate, the force adjusting plate is abutted against the spring, the force adjusting rod is provided with an external thread, the force adjusting rod is matched with the threaded hole of the force adjusting plate, and one end of the force adjusting rod is located on the rear cover. From this, through rotating the accent power pole, can make the accent power board remove on the accent power pole to the degree that compresses tightly of control accent power board and spring, the dynamics of the regulation spring of being convenient for satisfies different operation requirements.

In some embodiments, the automatic door and window closer further includes two roller shafts, the two roller shafts are respectively provided with two roller mounting holes at the front end and the rear end of the cam outer frame, the two roller mounting holes are located at the two sides of the mounting hole, the two rollers are respectively mounted in the corresponding roller mounting holes, and the two roller shafts are respectively fixed to the cam outer frame after penetrating through the two rollers. Therefore, the roller shaft is arranged, and the roller can be conveniently installed on the cam outer frame.

Drawings

Fig. 1 is a schematic view illustrating a structure of an automatic type window and door closer of the present invention;

FIG. 2 is an exploded view of an embodiment of the automatic door closer according to the present invention;

fig. 3 is a schematic view illustrating a structure of a cam in the automatic type window and door closer of the present invention;

fig. 4 is a schematic view showing a structure of a cam housing in the automatic door closer of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Refer to fig. 1 to 4. Automatic type door and window closer, which comprises a housin 1, cam subassembly 2, piston pull rod 3, piston 4 and spring 5 are all located in casing 1, cam subassembly 2 includes cam 21, cam frame 22 and gyro wheel 23, the one end of cam 21 is located in casing 1, the other end runs through and stretches out behind casing 1, cam frame 22 is equipped with mounting hole 221, gyro wheel 23 is two, all locate on cam frame 22, cam 21 is located in mounting hole 221, two gyro wheels 23 are located cam 21's both sides respectively, correspond the setting with cam 21, the one end and the cam frame 22 of piston pull rod 3 are fixed, the other end is connected with piston 4, spring 5's one end and piston 4 butt, the other end and casing 1 looks butt, piston 4's both sides are equipped with first oil pocket 11 and the second oil pocket 12 that are linked together respectively. Wherein the first oil chamber 11 is located on the cam 21 side, and the second oil chamber 12 is located on the spring 5 side.

When the automatic door and window closer is used, a door and a window are arranged on the cam 21, the cam 21 is driven to rotate through the rotation of the door and the window, when the door and the window are opened, the cam 21 pushes the cam outer frame 22 to move towards one side of the piston 4, so that the piston pull rod 3 is driven to move, the piston pull rod 3 pushes the piston 4 to move, so that the piston 4 pushes the spring 5, and the spring 5 is gradually compressed; at the same time, the hydraulic oil in the second oil chamber 12 is gradually pressed to the first oil chamber 11. When the angle of the door and window is opened to the maximum angle requirement, the rebound force of the spring 5 acts on the cam outer frame 22, the arc at the contact part of the cam 21 and the roller 23 cannot be kept still under the arc action of the roller 23, and the cam 21 is forced to rotate along with the movement of the cam outer frame 22, so that the cam 21 can drive the door and window to automatically reset and close. When the door and window is gradually closed, the piston 4 moves reversely under the action of the resilience force of the spring 5, and the hydraulic oil flows into the second oil chamber 12 from the first oil chamber 11.

The front side of the cam outer frame 22 is provided with a clamping groove 222, one end of the piston pull rod 3 is provided with a connector 31, and the connector 31 is clamped into the clamping groove 222. The connector 31 and the piston pull rod 3 are of an integrated structure, so that the connector 31 is convenient to form and process; the outer diameter of the connector 31 is larger than the outer diameter of the rest part of the piston pull rod 3, so that the connector 31 is conveniently clamped in the clamping groove 222, and the cam outer frame 22 is connected with the piston pull rod 3.

The two rollers 23 are respectively disposed at the front and rear ends of the cam outer frame 22, and one of the rollers 23 is located between the engaging groove 222 and the mounting hole.

The cam 21 comprises a body 211, a rotating shaft 212 and a mounting shaft 213, the rotating shaft 212 and the mounting shaft 213 are respectively arranged at two ends of the body 211, the mounting shaft 213 is matched with the shell 1, the rotating shaft 212 is located at the outer side of the shell 1, the body 211 is matched with the mounting hole 221, one side of the body 211 is provided with a boss 215, a groove 216 is arranged at the opposite side, when the boss 215 is abutted to one of the rollers 23, the groove 216 is matched with the other roller 23, the left side and the right side of the boss 215 are respectively provided with a limiting bulge 217, and when the opening angle of the door and window is 90 degrees, the limiting bulges 217 at two sides are abutted to the two rollers 23 respectively.

In the in-service use process, in order to avoid the direct contact of installation axle 213 and pivot 212 with casing 1, install the axle 213 and be equipped with ball bearing with casing 1 cooperation department cover, also be equipped with ball bearing at pivot 212 and casing 1 cooperation department cover, do benefit to and improve holistic life.

When the automatic door closer is used, the groove 216 is engaged with one of the rollers 23 when the protrusion 215 abuts against the other roller 23 when the door is in the initial closing state. When the door and window needs to be opened, the external force drives the door and window to rotate and drives the cam 21 to rotate; along with the rotation of the cam 21, other positions of the cam 21 are in contact with the roller 23, so that the smooth rotation of the cam 21 is facilitated; the cam 21, when rotated, acts on the roller 23, pushing the roller 23 and the cam casing 22 to move, so that the spring is gradually compressed. When the opening angle of the door and window is 90 degrees, the limiting bulges 217 on the two sides are respectively abutted with the two rollers 23; at this time, due to the resilience of the spring 5, the limiting protrusion 217 cannot be positioned by the action of the roller 23, and therefore, under the action of the resilience of the spring, the cam outer frame 22 is pushed to move in the opposite direction, the cam 21 is pushed to rotate in the opposite direction, and the door and window is automatically closed. Therefore, when the door and window is closed, automatic reset can be realized without external force, the whole structure is simple, the size is small, and the application range is improved.

The butyronitrile sealing ring 10 is sleeved on the outer side of the piston 4. Therefore, the piston 4 adopts a soft piston, and the stability of the sealing performance of the sealing position of the piston 4 is improved.

The automatic door and window closer also comprises a connecting screw 6, the other end of the piston pull rod 3 is provided with a threaded hole, one end of the connecting screw 6 is positioned in the piston 4, and the other end of the connecting screw extends out of the piston 4 and then is matched with the threaded hole of the piston pull rod 3. When the connecting screw 6 is tightly screwed with the threaded hole of the piston pull rod 3, the connecting screw 6 and the piston pull rod 3 clamp the end face of the piston 4, so that the piston pull rod 3 is fixedly connected with the piston 4.

The automatic door and window closer also comprises a one-way valve 7, one end of the one-way valve 7 is abutted with the piston 4, and the other end is abutted with the spring 5. The cross section of the check valve 7 is in a cross shape, the outer end face of the large end of the check valve 7 is abutted against the piston 4, and the inner end face of the large end of the check valve 7 is abutted against the spring 5. In the actual use process, in order to facilitate the abutting of the check valve 7 and the piston 4, a step surface is arranged on the inner wall of the piston 4, and one end of the check valve 7 abuts against the step surface in the piston 4, so that the transmission of force is facilitated. By arranging the one-way valve 7, hydraulic oil in the two oil cavities can flow quickly when the door is opened, so that the door and the window can be opened quickly; when the door and window is closed, the flow speed of hydraulic oil in the two oil cavities can be reduced, the buffering effect is achieved, and the use requirements are met.

The automatic door and window closer further comprises a rear cover 8 and a force adjusting device 9, the force adjusting device 9 comprises a force adjusting plate 91 and a force adjusting rod 92, the rear cover 8 is matched with the end face of the shell 1, a threaded hole is formed in the force adjusting plate 91, the force adjusting plate 91 is abutted to the spring 5, the force adjusting rod 92 is provided with an external thread, the force adjusting rod 92 is matched with the threaded hole of the force adjusting plate 91, and one end of the force adjusting rod 92 is located on the rear cover 8. The cross section of the force adjusting rod 92 is T-shaped, the small end of the force adjusting rod 92 is provided with an external thread, the large end of the force adjusting rod 92 is mounted on the rear cover 8, and the large end of the force adjusting rod 92 is mounted on the rear cover 8. This accent power device 9 is when adjusting, through rotating accent power pole 92 for accent power board 91 relative accent power pole 92 back-and-forth movement, thereby make accent power board 91 to spring 5 one side or keep away from spring 5 one side and remove, thereby adjust spring 5's bounce-back dynamics, and then control door and window's closing speed.

The automatic door and window closer further comprises two roller shafts 20, the two roller shafts 20 are arranged, roller mounting holes 223 are formed in the front end and the rear end of the cam outer frame 22 respectively, the two roller mounting holes 223 are located on the two sides of the mounting hole 221, the two rollers 23 are mounted in the corresponding roller mounting holes 221 respectively, and the two roller shafts 20 are fixed with the cam outer frame 22 after penetrating through the two rollers 23 respectively. Wherein, the upper and lower ends of the roller shaft 20 are fixed on the cam outer frame 22.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the inventive concept of the present invention, which falls into the protection scope of the present invention.

Claims

1. Automatic door and window closer, characterized in that, including casing (1), cam subassembly (2), piston pull rod (3), piston (4) and spring (5) all locate in casing (1), cam subassembly (2) includes cam (21), cam frame (22) and gyro wheel (23), the one end of cam (21) is located in casing (1), and the other end stretches out after running through casing (1), cam frame (22) are equipped with mounting hole (221), gyro wheel (23) are two, all locate on cam frame (22), cam (21) are located mounting hole (221), two gyro wheel (23) are located the both sides of cam (21) respectively, correspond the setting with cam (21), the one end of piston pull rod (3) is fixed with cam frame (22), the other end of the spring is connected with the piston (4), one end of the spring (5) is abutted against the piston (4), the other end of the spring is abutted against the shell (1), and a first oil cavity (11) and a second oil cavity (12) which are communicated with each other are respectively arranged on two sides of the piston (4).

2. The automatic door and window closer according to claim 1, wherein a locking groove (222) is formed in a front side of the cam outer frame (22), a connector (31) is formed at one end of the piston rod (3), and the connector (31) is locked into the locking groove (222).

3. The automatic door and window closer according to claim 2, wherein two of the rollers (23) are respectively provided at front and rear ends of the cam housing (22), and one of the rollers (23) is located between the catching groove (222) and the mounting hole (221).

4. The automatic type door and window closer of claim 3, wherein the cam (21) comprises a body (211), a rotation shaft (212), and a mounting shaft (213), the rotating shaft (212) and the mounting shaft (213) are respectively arranged at two ends of the body (211), the mounting shaft (213) is matched with the shell (1), the rotating shaft (212) is positioned at the outer side of the shell (1), the body (211) is matched with the mounting hole (221), one side of the body (211) is provided with a convex part (215), the opposite side is provided with a groove (216), when the projection (215) abuts against one of the rollers (23), the groove (216) is matched with the other roller (23), the left side and the right side of the convex part (215) are respectively provided with a limit bulge (217), when the opening angle of the door and window is 90 degrees, the limiting bulges (217) at two sides are respectively abutted against the two rollers (23).

5. The automatic door and window closer according to any one of claims 1 to 4, wherein a butyronitrile seal ring (10) is sleeved on the outer side of the piston (4).

6. The automatic door and window closer according to claim 5, further comprising a connection screw (6), wherein a threaded hole is formed in the other end of the piston rod (3), one end of the connection screw (6) is located in the piston (4), and the other end of the connection screw extends out of the piston (4) and then is matched with the threaded hole of the piston rod (3).

7. The automatic door and window closer according to claim 6, further comprising a check valve (7), one end of said check valve (7) being in abutment with said piston (4) and the other end being in abutment with said spring (5).

8. The automatic door and window closer as claimed in claim 1, further comprising a rear cover (8) and a force adjusting device (9), wherein the force adjusting device (9) comprises a force adjusting plate (91) and a force adjusting rod (92), the rear cover (8) is matched with the end surface of the housing (1), a threaded hole is formed in the force adjusting plate (91), the force adjusting plate (91) is abutted against the spring (5), the force adjusting rod (92) is provided with an external thread, the force adjusting rod (92) is matched with the threaded hole of the force adjusting plate (91), and one end of the force adjusting rod (92) is located on the rear cover (8).

9. The automatic door and window closer according to claim 3, further comprising two roller shafts (20), wherein two roller shafts (20) are provided, the front and rear ends of the cam housing (22) are respectively provided with roller mounting holes (223), the two roller mounting holes (223) are located at two sides of the mounting hole (221), the two rollers (23) are respectively mounted in the corresponding roller mounting holes (223), and the two roller shafts (20) are respectively fixed to the cam housing (22) after passing through the two rollers (23).