CN211974694U

CN211974694U - Multifunctional closer

Info

Publication number: CN211974694U
Application number: CN202020066598.5U
Authority: CN
Inventors: 黄艳萍
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-13
Filing date: 2020-01-13
Publication date: 2020-11-20
Anticipated expiration: 2030-01-13

Abstract

The utility model discloses a multi-functional closer, which comprises a housin, the cam ejector pin, piston and spring, be equipped with the holding chamber in the casing, piston and spring all are equipped with the holding intracavity, the both sides of piston are first oil pocket and second oil pocket respectively, first oil pocket is linked together with the second oil pocket, the spring is located second oil pocket, on the casing was located to the cam, the one end and the cam looks butt of cam ejector pin, the other end and piston looks butt, the one end and the piston looks butt of spring, the periphery of piston is equipped with the helicla flute, first oil pocket can be linked together through the helicla flute with the second oil pocket. When the door needs to be closed, the spring pushes the piston to move, so that the hydraulic oil in the first oil cavity enters the second oil cavity along the spiral groove, the flowing speed of the hydraulic oil is reduced, and a good buffering effect is achieved. Through being equipped with the helicla flute, replaced the governing valve on the current conventional closer, reduced the requirement to the casing size, each structure distributes rationally in the casing, has reduced whole size, satisfies the installation requirement.

Description

Multifunctional closer

Technical Field

The utility model belongs to a door and window closer especially relates to a multi-functional closer.

Background

When some refrigerators are used, especially when the self-service shopping refrigerator is used, the phenomenon that the refrigerator door is not closed and leaves easily occurs to users, and the normal use of the refrigerator is easily influenced. Therefore, in order to solve the problem, it is necessary to develop a closer capable of automatically closing the refrigerator door, but the size of the closer needs to be small due to the limitation of the installation position of the refrigerator itself, and thus the conventional door and window closer cannot be directly used due to its large size.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multi-functional closer can solve at least one in the above-mentioned problem.

According to the utility model discloses an aspect provides a multi-functional closer, which comprises a housin, the cam ejector pin, piston and spring, be equipped with the holding chamber in the casing, the holding intracavity is all located to piston and spring, the both sides of piston are first oil pocket and second oil pocket respectively, first oil pocket is linked together with the second oil pocket, the spring is located the second oil pocket, the cam is located on the casing, the one end and the cam looks butt of cam ejector pin, the other end and piston looks butt, the one end and the piston looks butt of spring, the periphery of piston is equipped with the helicla flute, first oil pocket can be linked together through the helicla flute with the second oil pocket.

The utility model has the advantages that: through being equipped with the helicla flute in the periphery of piston, consequently, when the door need be closed, the spring promoted the piston and removed for the hydraulic oil of first oil pocket enters into the second oil pocket along the helicla flute, has slowed down the flow velocity of hydraulic oil, and plays the damping effect to the removal of piston, can play fine buffering effect. Meanwhile, the spiral groove is arranged to replace a speed regulating valve on the conventional closer, so that the requirement on the size of the shell is greatly reduced, and meanwhile, the structures in the shell are reasonably distributed, so that the overall size of the multifunctional closer is greatly reduced, and the installation requirement is met.

In some embodiments, the multifunctional closer further comprises a check valve and a spring ejector rod, the piston and the spring ejector rod are both of a hollow structure, the spring ejector rod is communicated with the second oil cavity, the side wall of the piston is provided with an oil hole, the check valve is arranged in the piston, one end of the check valve extends into the spring ejector rod, the spring ejector rod is sleeved in the spring and matched with the piston, and the spring is abutted to the piston through the spring ejector rod. From this, be equipped with the check valve, can be so that when the piston moved to second oil pocket one side, the hydraulic oil of second oil intracavity can be opened the check valve, has realized that the hydraulic oil of second oil intracavity can be very fast enters into first oil pocket, satisfies the operation requirement that the door opened fast.

In some embodiments, the multifunctional closer further comprises a screw, a limit step is arranged in the piston, an internal threaded hole is formed in the other end of the cam ejector rod, the end surface of the screw abuts against one side of the limit step, the screw penetrates through the limit step and then is matched with the internal threaded hole of the cam ejector rod, the end surface of the screw abuts against the other side of the limit step, and when the check valve is in an open state, the other end of the check valve abuts against the screw. Therefore, the screw is arranged, the cam ejector rod can be ensured to be in close contact with the piston, meanwhile, the limiting effect on the one-way valve can be achieved, and the one-way valve is ensured to be matched with the spring ejector rod all the time.

In some embodiments, the piston includes a leading portion and a trailing portion connected to each other, the leading portion having an outer diameter smaller than an outer diameter of the trailing portion, the trailing portion having an outer diameter corresponding to an inner diameter of the piston accommodating chamber, the spiral groove being formed in an outer circumference of the trailing portion, and ends of the spiral groove being flush with ends of the trailing portion, respectively, and the oil hole being formed in the leading portion of the piston. Therefore, the outer diameter of the head part is smaller than that of the tail part, so that the hydraulic oil in the second oil cavity can enter the first oil cavity after sequentially passing through the spring ejector rod, the one-way valve and the oil hole.

In some embodiments, the multifunctional closer further comprises a first sealing ring, an outer diameter of one end of the check valve is smaller than an inner diameter of the spring ejector rod, an outer diameter of the other end of the check valve is larger than the inner diameter of the spring ejector rod, the first sealing ring is sleeved on the check valve, and the first sealing ring is located between the other end of the check valve and the spring ejector rod. Therefore, the first sealing ring is arranged, so that when the one-way valve is in a closed state, hydraulic oil in the second oil cavity is prevented from flowing to the first oil cavity through the one-way valve.

In some embodiments, the multi-functional closer further comprises a second sealing ring, the second sealing ring is sleeved on the outer side of the spring ejector rod, and the second sealing ring is matched with the end face of the piston. Therefore, the second sealing ring is arranged, so that the hydraulic oil in the second oil cavity can be prevented from flowing through the gap between the spring ejector rod and the piston.

In some embodiments, the cam is provided with a mounting opening, the end surface of the mounting opening is a plane, the two sides of the mounting opening are provided with arc parts, one end of the cam mandril is matched with the mounting opening, and when the cam rotates, the arc parts can be contacted with one end of the cam mandril. Therefore, when the cam rotates, the arc part and the cam mandril act to push the cam mandril to drive the piston to move towards one side of the spring.

In some embodiments, the multi-functional shutoff further includes a third sealing ring disposed around the cam stem, the third sealing ring being disposed between the first oil chamber and the cam. Therefore, the third sealing ring is arranged, hydraulic oil in the oil cavity can be prevented from leaking, and a good sealing effect is achieved.

In some embodiments, the multifunctional closer further comprises a bearing, the bearing is sleeved outside the cam mandril and matched with the inner wall of the piston, and the bearing is located between the third sealing ring and the piston. Therefore, the service life of the cam ejector rod and the piston can be effectively prolonged by arranging the bearing.

In some embodiments, the multi-functional closure further comprises a rear cover provided with external threads, the housing is provided with internal threads, the rear cover is in threaded engagement with the housing, and the other end of the spring is in contact with an end face of the rear cover. From this, the relative position of lid and casing after back lid and casing pass through screw-thread fit, conveniently adjusts to the realization is to the regulation of spring compression degree.

Drawings

Fig. 1 is a schematic view of an exploded structure of the multifunctional closer of the present invention;

fig. 2 is a schematic structural view of the multifunctional closer of the present invention;

fig. 3 is a schematic sectional structural view of the multifunctional closer of the present invention.

Detailed Description

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

Referring to fig. 1 to 3: multifunctional closer, including casing 1, cam 2, cam ejector pin 3, piston 4 and spring 5, be equipped with the holding chamber in the casing 1, the holding intracavity is all located to piston 4 and spring 5, the both sides of piston 4 are first oil pocket 6 and second oil pocket 7 respectively, first oil pocket 6 is linked together with second oil pocket 7, spring 5 is located second oil pocket 7, on casing 1 was located to cam 2, the one end and the 2 looks butt of cam ejector pin 3, the other end and piston 4 looks butt, the one end and the 4 looks butt of piston 5, the periphery of piston 4 is equipped with helicla flute 41, first oil pocket 6 can be linked together through helicla flute 41 with second oil pocket 7. In the actual use process, the depth and the width of the spiral groove 41 can be adjusted according to the requirements on the opening and closing speed of the door; when the opening speed is faster, the depth or width of the spiral groove 41 is increased, so that the flow of the hydraulic oil on the spiral groove is increased.

The utility model discloses a multi-functional closer can be through the regulation of seting up to spiral groove 41, realizes the control of door opening speed to and the damping force when adjusting corresponding piston and removing, consequently, can be used for current door leaf or casement with this multi-functional closer, realize the control to opening and closing of conventional door and window, increase application scope.

The multifunctional closer further comprises a one-way valve 8 and a spring ejector rod 9, the piston 4 and the spring ejector rod 9 are both of a hollow structure, the spring ejector rod 9 is communicated with the second oil cavity 7, an oil hole 42 is formed in the side wall of the piston 4, the one-way valve 8 is sleeved in the piston 4, one end of the one-way valve extends into the spring ejector rod 9, the spring ejector rod 9 is sleeved in the spring 5 and matched with the piston 4, and the spring 5 is abutted to the piston 4 through the spring ejector rod 9. By arranging the spring ejector rod 9, hydraulic oil in the second oil chamber 7 can enter the first oil chamber 6 after sequentially passing through the spring ejector rod 9, the one-way valve 8 and the oil hole 42.

The utility model discloses a multi-functional closer still includes screw 10, and screw 10 is the hexagon socket head cap screw, is equipped with spacing step 43 in the piston 4, and the other end of cam ejector pin 3 is equipped with the internal thread hole, and one side looks butt of terminal surface and spacing step 43, and screw 10 runs through behind the spacing step 43 and cooperatees with cam ejector pin 3's internal thread hole, and the opposite side looks butt of terminal surface and spacing step 43, and when check valve 8 was in the open mode, the other end and the screw 10 looks butt of check valve 8. In order to conveniently adjust the opening size of the one-way valve 8, the thread matching length of the screw 10 and the inner thread hole in the cam ejector rod 3 can be adjusted, namely the depth of the screw 10 extending into the inner thread hole is adjusted, so that the use is convenient, and the installation and adjustment are convenient.

The piston 4 comprises a head part 44 and a tail part 45 which are connected, the outer diameter of the head part 44 is smaller than that of the tail part 45, the outer diameter of the tail part 45 is consistent with the inner diameter of a piston accommodating cavity, the spiral groove 41 is positioned on the periphery of the tail part 45, two ends of the spiral groove 41 are respectively level with two ends of the tail part 45, and the oil hole 42 is positioned on the head part 44 of the piston 4.

The multifunctional closer further comprises a first sealing ring 20, the outer diameter of one end of the one-way valve 8 is smaller than the inner diameter of the spring ejector rod 9, the outer diameter of the other end of the one-way valve 8 is larger than the inner diameter of the spring ejector rod 9, the one-way valve 8 is sleeved with the first sealing ring 20, and the first sealing ring 20 is located between the other end of the one-way valve 8 and the spring ejector rod 9. In the actual use process, in order that the hydraulic oil in the second oil chamber 7 flows out through the one-way valve 8 after entering the spring ejector rod 9, a horizontal plane is turned on the outer periphery of the one-way valve 8, so that a gap is formed between the outer wall of the one-way valve 8 and the inner wall of the spring ejector rod 9, and the hydraulic oil can flow conveniently. When the check valve 8 is in the closed state, the first seal ring 20 prevents the hydraulic oil in the second oil chamber 7 from flowing out through the check valve 8.

The multifunctional closer further comprises a second sealing ring 30, the second sealing ring 30 is sleeved on the outer side of the spring ejector rod 9, and the second sealing ring 30 is matched with the end face of the piston 4. The second seal ring 30 is provided to prevent the hydraulic oil in the second oil chamber 7 from flowing through the gap between the spring jack 9 and the piston 4.

The cam 2 is provided with a mounting opening 21, the end face of the mounting opening 21 is a plane, two sides of the mounting opening 21 are provided with arc parts 22, one end of the cam mandril 3 is matched with the mounting opening 21, and when the cam 2 rotates, the arc parts 22 can be contacted with one end of the cam mandril 3. The cam 2 is of an integrally formed structure, and the installation of the cam mandril 3 can be facilitated by arranging the installation opening 21; the arc part 22 is provided, so that the cam top rod 3 can be pushed to move by the arc part 22 when the cam 2 rotates.

The utility model discloses a multi-functional closer is when using, and the top of cam 2 is connected with door leaf or casement, drives cam 2 through door leaf or casement and rotates. When the arc portion 22 of the cam 2 acts with the cam carrier 3, the cam 2 pushes the cam carrier 3 to move.

The multifunctional closer also comprises a third sealing ring 40, the third sealing ring 40 is sleeved on the outer side of the cam mandril 3, and the third sealing ring 40 is positioned between the first oil cavity 6 and the cam 2. Through being equipped with third sealing washer 40, can effectively prevent that the hydraulic oil in the oil chamber from leaking outward for cam 2 is in not having under the oil ring border, has guaranteed the normal use of whole multi-functional closer.

The multifunctional closer further comprises a bearing 50, the bearing 50 is sleeved on the outer side of the cam carrier rod 3 and matched with the inner wall of the piston 4, and the bearing 50 is located between the third sealing ring 40 and the piston 4. Therefore, the friction force applied to the cam carrier rod 3 during movement can be reduced by arranging the bearing 50, so that the service life of the cam carrier rod 3 and the piston 4 is prolonged.

The utility model discloses a multi-functional closer still includes back lid 60, and back lid 60 is equipped with the external screw thread, and casing 1 is equipped with the internal thread, and back lid 60 passes through screw-thread fit with casing 1, and the other end of spring 5 contacts with the terminal surface of back lid 60. From this, back lid 60 passes through screw-thread fit with casing 1, conveniently adjusts the relative position of back lid 60 and casing 1 to the realization is to the regulation of spring 5 compression degree. Specifically, when the rear cover 60 moves towards the inner side of the housing 1, the spring 5 is compressed, so that the bounce force of the spring 5 is increased when the door and the window are closed, and therefore, the closing speed of the door and the window can be accelerated to a certain extent; otherwise, the closing speed of the door and window can be reduced.

In the actual use process, the oil valve 70 is arranged on the rear cover 60, and the oil valve 70 is arranged, so that the injection and the replacement of the hydraulic oil in the oil cavity can be facilitated, and the use is convenient; the opening and closing speed of the door and the window can be correspondingly adjusted by changing the viscosity of the hydraulic oil.

The utility model discloses a multi-functional closer's theory of operation as follows:

when the door and window is opened, an external force acts on the cam 2, the cam 2 rotates, the arc part 22 on the cam 2 acts on the cam mandril 3, the cam mandril 3 moves towards one side of the spring 5, and the cam mandril 3 acts on the piston 4 to push the piston 4 to gradually compress the spring 5. When the piston 4 moves, the hydraulic oil in the second oil chamber 7 pushes the check valve 8 open, and the hydraulic oil in the second oil chamber 7 enters the first oil chamber 6 through the spring push rod 9, the check valve 8 and the oil hole 42.

When the door and window is closed, the external force is removed, the rebound force of the spring 5 acts on the spring ejector rod 9 and then acts on the piston 4 to push the piston to move towards one side of the first oil cavity 6, at the moment, the hydraulic oil in the first oil cavity 6 flows to the second oil cavity 7, and the check valve 8 is closed under the action of hydraulic pressure. The hydraulic oil in the first oil chamber 6 flows to the second oil chamber 7 along the spiral groove 41 on the piston 4, and the flow speed of the hydraulic oil can be reduced by arranging the spiral groove 41, so that the closing speed of doors and windows can be reduced, and the use requirement can be met.

The above is only the 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, and these all fall into the protection scope of the present invention.

Claims

1. The multifunctional closer is characterized by comprising a shell (1), a cam (2), a cam mandril (3), a piston (4) and a spring (5), an accommodating cavity is arranged in the shell (1), the piston (4) and the spring (5) are both arranged in the accommodating cavity, a first oil chamber (6) and a second oil chamber (7) are respectively arranged at two sides of the piston (4), the first oil chamber (6) is communicated with the second oil chamber (7), the spring (5) is positioned in the second oil chamber (7), the cam (2) is arranged on the shell (1), one end of the cam mandril (3) is abutted with the cam (2), the other end is abutted with the piston (4), one end of the spring (5) is abutted against the piston (4), a spiral groove (41) is arranged on the periphery of the piston (4), the first oil cavity (6) and the second oil cavity (7) can be communicated through a spiral groove (41).

2. The multifunctional closer as claimed in claim 1, further comprising a check valve (8) and a spring push rod (9), wherein the piston (4) and the spring push rod (9) are both hollow structures, the spring push rod (9) is communicated with the second oil chamber (7), an oil hole (42) is formed in a side wall of the piston (4), the check valve (8) is sleeved in the piston (4), one end of the check valve extends into the spring push rod (9), the spring push rod (9) is sleeved in the spring (5) and is matched with the piston (4), and the spring (5) is abutted to the piston (4) through the spring push rod (9).

3. The multifunctional closer according to claim 2, further comprising a screw (10), wherein a limiting step (43) is arranged in the piston (4), an internal threaded hole is formed in the other end of the cam mandril (3), the end surface of the screw abuts against one side of the limiting step (43), the screw (10) penetrates through the limiting step (43) and then is matched with the internal threaded hole of the cam mandril (3), the end surface of the screw abuts against the other side of the limiting step (43), and when the check valve (8) is in an open state, the other end of the check valve (8) abuts against the screw (10).

4. A multi-functional shutoff according to claim 3 wherein the piston (4) includes a head portion (44) and a tail portion (45) connected together, the head portion (44) having an outer diameter smaller than an outer diameter of the tail portion (45), the tail portion (45) having an outer diameter corresponding to an inner diameter of the piston receiving chamber, the spiral groove (41) being located on an outer periphery of the tail portion (45), and both ends of the spiral groove (41) being flush with both ends of the tail portion (45), respectively, the oil hole (42) being located in the head portion (44) of the piston (4).

5. The multifunctional closer according to claim 4, further comprising a first sealing ring (20), wherein the outer diameter of one end of the one-way valve (8) is smaller than the inner diameter of the spring push rod (9), the outer diameter of the other end of the one-way valve is larger than the inner diameter of the spring push rod (9), the first sealing ring (20) is sleeved on the one-way valve (8), and the first sealing ring (20) is located between the other end of the one-way valve (8) and the spring push rod (9).

6. A multi-functional closer according to claim 5, further comprising a second sealing ring (30), wherein the second sealing ring (30) is sleeved on the outer side of the spring push rod (9), and the second sealing ring (30) is matched with the end surface of the piston (4).

7. A multifunctional closer according to any one of claims 1 to 6, wherein the cam (2) is provided with a mounting opening (21), the end surface of the mounting opening (21) is a plane, both sides of the mounting opening (21) are provided with arc portions (22), one end of the cam carrier rod (3) is matched with the mounting opening (21), and when the cam (2) rotates, the arc portions (22) can be contacted with one end of the cam carrier rod (3).

8. The multi-functional shutoff of claim 7 further including a third seal ring (40), the third seal ring (40) fitting around the outside of the cam follower (3), the third seal ring (40) being located between the first oil chamber (6) and the cam (2).

9. The multi-functional closer of claim 8, further comprising a bearing (50), wherein the bearing (50) is sleeved on the outer side of the cam carrier rod (3) and is matched with the inner wall of the piston (4), and the bearing (50) is located between the third sealing ring (40) and the piston (4).

10. A multi-functional closure according to claim 7, further comprising a rear cover (60), wherein the rear cover (60) is provided with an external thread, the housing (1) is provided with an internal thread, the rear cover (60) is screw-engaged with the housing (1), and the other end of the spring (5) is in contact with an end surface of the rear cover (60).