CN211342340U

CN211342340U - Cam type hidden door closer with combined valve

Info

Publication number: CN211342340U
Application number: CN201921849308.8U
Authority: CN
Inventors: 章国银; 黄少祥; 周伟
Original assignee: Zhejiang Dunhaosi Hardware Ind Co ltd
Current assignee: Zhejiang Dunhaosi Hardware Ind Co ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-08-25
Anticipated expiration: 2029-10-30

Abstract

The utility model relates to a door closer technical field discloses cam formula hides door closer with combination valve, include casing (1) and establish cam (2) in casing (1), still be equipped with first piston (3) that remove in casing (1), be equipped with safety valve subassembly (4) in first piston (3), safety valve subassembly (4) include check valve (5) and establish safety valve body (6) in check valve (5), be close to cam (2) one side on safety valve body (6) and be equipped with first gland (7) of being connected with safety valve body (6), the one end that is close to cam (2) on first gland (7) is equipped with first filter screen (8) of being connected with first gland (7). The safety valve assembly is arranged to prevent the shell from bursting caused by forced door closing, so that the safety of the door closer is improved when the door is closed; through first filter screen filtration metal particle, play the effect of purifying to hydraulic oil, improve the performance of this technique.

Description

Cam type hidden door closer with combined valve

Technical Field

The utility model relates to a door closer technical field especially relates to a cam formula hides door closer with combination valve.

Background

The door is widely used in daily life, but when people open the door, force is often easily applied excessively, the door can be opened too fast when being subjected to excessive opening force, once people stand behind the door or articles exist, the door body of the door can cause great impact on people or articles, the damage to the door body is great, personal injury or article damage is easily caused, and the safety is low. In order to avoid the situation, a door closer is mounted on a plurality of doors, and the door closer can provide certain damping when a user opens the door, so that the door is prevented from being opened too fast.

For example, the chinese patent application (application No. 201410540708.6) discloses a cam shaft door closer which can greatly reduce the door opening force without losing the door closing force. The cam shaft door closer comprises a door closer body, a buffer piston arranged at the front end of the door closer body, a spring piston arranged at the rear end of the door closer, a hydraulic oil circuit communicated with the buffer piston and the spring piston, a transmission shaft vertically penetrating through the door closer body and positioned between the buffer piston and the spring piston, and a heart-shaped cam arranged on the transmission shaft, wherein the front end surface and the rear end surface of the heart-shaped cam are respectively tangent to the buffer piston and the spring piston. In the above patent, when the door is closed, there is a risk of the case bursting due to the forceful closing of the check valve.

Disclosure of Invention

The utility model discloses to the shortcoming that has impurity among the prior art in the door security is low, the hydraulic oil, provide a door security height, the clear cam formula that has the combination valve of closing door conceals door closer.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

the cam type hidden door closer with the combination valve comprises a shell and a cam arranged in the shell, wherein a first piston moving in the shell is further arranged in the shell, a safety valve component is arranged in the first piston, the safety valve component comprises a one-way valve and a safety valve body arranged in the one-way valve, a first gland connected with the safety valve body is arranged on one side, close to the cam, of the safety valve body, and a first filter screen connected with the first gland is arranged at one end, close to the cam, of the first gland. When the door is opened, the first piston moves rightwards, hydraulic oil flows rightwards through the one-way valve, when the door is closed, the first piston moves leftwards, and because the one-way valve is closed, in order to prevent the shell from bursting caused by strong door closing, the safety of the door closer is improved by arranging the safety valve body in the one-way valve, and the shell is prevented from bursting; in assembly or use, hydraulic oil can produce the metal particle, filters the metal particle through first filter screen, plays the effect of purifying to hydraulic oil, improves the performance of this technique, prolongs the life of this technique and the stability of using, and first filter screen fixes a position first filter screen through first gland fixed mounting, improves the stability of first filter screen.

Preferably, the right end of the shell is provided with a rear end cover, a return spring is arranged inside the right end of the shell, and two ends of the return spring are respectively abutted against the rear end cover and the end part of the one-way valve. After the door is opened, the one-way valve is reset through the elasticity of the reset spring, so that the hydraulic oil is prevented from flowing back.

Preferably, a safety valve which is abutted against the safety valve body is arranged in the right end of the safety valve body, a cylindrical pin which is arranged on the safety valve body in a penetrating mode is arranged at the left end of the safety valve body, a safety spring is arranged between the cylindrical pin and the safety valve, and two ends of the safety spring are abutted against the cylindrical pin and the safety valve respectively. The safety valve supports the inlet at the right end of the safety valve body through the elastic force of the safety spring, when the door is closed powerfully, the safety valve is opened by jacking when the pressure of hydraulic oil is greater than the safety spring, and the hydraulic oil flows to the left side of the shell through the inlet at the right end of the safety valve body, so that the shell is prevented from being burst under pressure.

Preferably, a second piston is further arranged in the shell and arranged on the left side of the cam, a first inner spring fixing block and a second pressing cover are arranged on the left side of the inner portion of the second piston, the second pressing cover is arranged on the right side of the first inner spring fixing block, and a second filter screen is arranged between the second pressing cover and the second piston. When the door is opened, the hydraulic oil is purified through the second filter screen, metal particles in the hydraulic oil are prevented from moving rightwards along with the hydraulic oil, and parts such as a cam and a roller on the right side of the second piston are prevented from being abraded, so that normal use of the door closer is influenced.

Preferably, an adjusting screw and a force adjusting piece sleeved on the adjusting screw are arranged in the right end of the shell, the adjusting screw is in threaded connection with the force adjusting piece, an outer spring is arranged between the force adjusting piece and the second piston, an inner spring is arranged between the adjusting screw and the first inner spring fixing block, a second inner spring fixing block is arranged at the end of the adjusting screw, and two ends of the inner spring are respectively connected with the first inner spring fixing block and the second inner spring fixing block. The inner spring is positioned through the first inner spring fixing block and the second inner spring fixing block, when the adjusting screw rotates and adjusts, the stability of the adjusting screw is guaranteed, the tightness of the outer spring is controlled by adjusting the position of the force adjusting piece through rotating the adjusting screw, and therefore the force for opening the door is adjusted, and the door closer is guaranteed to be suitable for different working occasions.

Preferably, the right side of the shell is provided with a front end cover connected with the shell, the right end of the adjusting screw rod penetrates through the front end cover, the right end of the adjusting screw rod is provided with a force adjusting gear connected with the adjusting screw rod, and the force adjusting gear drives the adjusting screw rod to rotate. An operator drives the adjusting screw rod to rotate through the force adjusting gear to control the position of the force adjusting piece so as to adjust the outer spring, and the adjusting structure and the adjusting mode are simplified.

The utility model discloses owing to adopted above technical scheme, have apparent technological effect: the safety valve assembly is arranged to prevent the shell from bursting caused by strong door closing, so that the safety of the door closer is improved when the door is closed; in assembly or use, hydraulic oil can produce the metal particle, filters the metal particle through first filter screen, plays the effect of purifying to hydraulic oil, improves the performance of this technique, prolongs the life and the stability of using of this technique.

Drawings

Fig. 1 is a schematic diagram of the internal structure of the present invention.

Fig. 2 is a partially enlarged view of a portion M in fig. 1.

Fig. 3 is a partially enlarged view of the portion N in fig. 1.

The names of the parts indicated by the numerical references in the drawings are as follows: the hydraulic pressure regulating valve comprises a shell 1, a cam 2, a cam 3, a first piston 4, a safety valve component 5, a one-way valve 6, a safety valve body 7, a first gland 8, a first filter screen 9, a rear end cover 10, a return spring 11, a safety valve 12, a cylindrical pin 13, a safety spring 14, a second piston 15, a first inner spring fixing block 15, a second gland 16, a second filter screen 17, an adjusting screw 18, a force regulating sheet 19, an outer spring 20, an inner spring 21, a second inner spring fixing block 22, a front end cover 23, a force regulating gear 24, a mounting plate 25 and a force regulating rod 26.

Detailed Description

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

Example 1

Cam type hides door closer with combination valve, as shown in fig. 1-3, including casing 1 with establish the cam 2 in casing 1, still be equipped with the first piston 3 that removes in casing 1 in the casing 1, be equipped with relief valve subassembly 4 in the first piston 3, relief valve subassembly 4 includes check valve 5 and establishes the safety valve body 6 in check valve 5, be close to cam 2 one side on the safety valve body 6 and be equipped with the first gland 7 of being connected with safety valve body 6, the one end that is close to cam 2 on the first gland 7 is equipped with the first filter screen 8 of being connected with first gland 7. When the door is opened, the first piston 3 moves rightwards, hydraulic oil flows rightwards through the one-way valve 5, when the door is closed, the first piston 3 moves leftwards, and because the one-way valve 5 is closed, in order to prevent the shell 1 from bursting caused by strong door closing, the safety of the door closer is improved by arranging the safety valve body 6 in the one-way valve 5, and the shell 1 is prevented from bursting; in assembly or use, hydraulic oil can produce the metal particle, filters the metal particle through first filter screen 8, plays the effect of purifying to hydraulic oil, improves the performance of this technique, prolongs the life of this technique and the stability of using, and first filter screen 8 fixes a position first filter screen 8 through first gland 7 fixed mounting, improves first filter screen 8's stability.

The right end of the shell 1 is provided with a rear end cover 9, a return spring 10 is arranged inside the right end of the shell 1, and two ends of the return spring 10 are respectively abutted against the rear end cover 9 and the end part of the check valve 5. After the door opening action is finished, the one-way valve 5 is reset through the elastic force of the reset spring 10, so that the hydraulic oil is prevented from flowing back. The safety valve 11 which is abutted against the safety valve body 6 is arranged in the right end of the safety valve body 6, the cylindrical pin 12 which is arranged on the safety valve body 6 in a penetrating mode is arranged at the left end of the safety valve body 6, the safety spring 13 is arranged between the cylindrical pin 12 and the safety valve 11, and two ends of the safety spring 13 are abutted against the cylindrical pin 12 and the safety valve 11 respectively. The safety valve 11 supports against the inlet at the right end of the safety valve body 6 through the elastic force of the safety spring 13, when the door is closed strongly, the pressure of hydraulic oil is greater than that of the safety spring 13, the safety valve 11 is jacked open, and the hydraulic oil flows to the left side of the shell 1 through the inlet at the right end of the safety valve body 6 to prevent the shell 1 from bursting under pressure.

A second piston 14 is further arranged in the shell 1, the second piston 14 is arranged on the left side of the cam 2, a first inner spring fixing block 15 and a second gland 16 are arranged on the left side of the interior of the second piston 14, the second gland 16 is arranged on the right side of the first inner spring fixing block 15, and a second filter screen 17 is arranged between the second gland 16 and the second piston 14. When the door is opened, the second filter screen 17 is used for purifying the hydraulic oil, so that metal particles in the hydraulic oil are prevented from moving rightwards along with the hydraulic oil, and parts such as the cam 2 and the roller on the right side of the second piston 14 are prevented from being abraded, so that the normal use of the door closer is influenced.

Example 2

As shown in fig. 1 to 3, based on embodiment 1, an adjusting screw 18 and a force adjusting plate 19 sleeved on the adjusting screw 18 are arranged inside a right end of a housing 1, the adjusting screw 18 is in threaded connection with the force adjusting plate 19, an outer spring 20 is arranged between the force adjusting plate 19 and a second piston 14, an inner spring 21 is arranged between the adjusting screw 18 and a first inner spring fixing block 15, a second inner spring fixing block 22 is arranged at an end of the adjusting screw 18, and two ends of the inner spring 21 are respectively connected with the first inner spring fixing block 15 and the second inner spring fixing block 22. The inner spring 21 is positioned through the first inner spring fixing block 15 and the second inner spring fixing block 22, when the adjusting screw 18 rotates and is adjusted, the stability of the adjusting screw 18 is guaranteed, the position of the force adjusting piece 19 is adjusted through rotating the adjusting screw 18, and therefore the tightness of the outer spring 20 is controlled, the opening force is adjusted, and the door closer is guaranteed to be suitable for different working occasions.

Example 3

As shown in fig. 1 to 3, on the basis of embodiment 2, a front end cover 23 connected to the housing 1 is disposed on the right side of the housing 1, a right end of the adjusting screw 18 is inserted into the front end cover 23, a force adjusting gear 24 connected to the adjusting screw 18 is disposed on the right end of the adjusting screw 18, and the force adjusting gear 24 drives the adjusting screw 18 to rotate. An operator drives the adjusting screw 18 to rotate through the force adjusting gear 24 to control the force adjusting piece 19 so as to adjust the outer spring 20, and the adjusting structure and the adjusting mode are simplified. Still include mounting panel 25, be equipped with force adjusting rod 26 on the mounting panel 25, the lower extreme of force adjusting rod 26 is equipped with the drive gear with force adjusting gear 24 meshing, and force adjusting rod 26 rotates and drives drive gear and rotate to drive force adjusting gear 24 and rotate.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.

Claims

1. Cam formula hidden door closer with combination valve, including casing (1) and establish cam (2) in casing (1), its characterized in that: still be equipped with first piston (3) that remove in casing (1), be equipped with safety valve subassembly (4) in first piston (3), safety valve subassembly (4) include check valve (5) and establish safety valve body (6) in check valve (5), be close to cam (2) one side on safety valve body (6) and be equipped with first gland (7) of being connected with safety valve body (6), the one end that is close to cam (2) on first gland (7) is equipped with first filter screen (8) of being connected with first gland (7).

2. The cammed concealed door closer with combination valve according to claim 1 wherein: the right end of the shell (1) is provided with a rear end cover (9), a return spring (10) is arranged inside the right end of the shell (1), and two ends of the return spring (10) are respectively abutted against the rear end cover (9) and the end part of the one-way valve (5).

3. The cammed concealed door closer with combination valve according to claim 1 wherein: the safety valve (11) which is abutted against the safety valve body (6) is arranged in the right end of the safety valve body (6), the cylindrical pin (12) which is arranged on the safety valve body (6) in a penetrating mode is arranged at the left end of the safety valve body (6), the safety spring (13) is arranged between the cylindrical pin (12) and the safety valve (11), and two ends of the safety spring (13) are abutted against the cylindrical pin (12) and the safety valve (11) respectively.

4. The cammed concealed door closer with combination valve according to claim 1 wherein: still be equipped with second piston (14) in casing (1), the left side at cam (2) is established in second piston (14), and the left side of second piston (14) inside is equipped with first interior spring fixed block (15) and second gland (16), and the right side at first interior spring fixed block (15) is established in second gland (16), is equipped with second filter screen (17) between second gland (16) and second piston (14).

5. The cammed concealed door closer with combination valve according to claim 4 wherein: adjusting screw (18) and force adjusting piece (19) sleeved on adjusting screw (18) are arranged inside the right end of shell (1), adjusting screw (18) and force adjusting piece (19) are in threaded connection, outer spring (20) is arranged between force adjusting piece (19) and second piston (14), inner spring (21) is arranged between adjusting screw (18) and first inner spring fixing block (15), second inner spring fixing block (22) is arranged at the end of adjusting screw (18), and two ends of inner spring (21) are connected with first inner spring fixing block (15) and second inner spring fixing block (22) respectively.

6. The cammed concealed door closer with combination valve according to claim 5, wherein: the right side of the shell (1) is provided with a front end cover (23) connected with the shell (1), the right end of the adjusting screw rod (18) is arranged in the front end cover (23) in a penetrating mode, the right end of the adjusting screw rod (18) is provided with a force adjusting gear (24) connected with the adjusting screw rod (18), and the force adjusting gear (24) drives the adjusting screw rod (18) to rotate.