CN216893954U

CN216893954U - Two-valve three-speed door closer

Info

Publication number: CN216893954U
Application number: CN202121318553.3U
Authority: CN
Inventors: 姜雷; 徐利祥; 陈伟松; 周健; 汤文豪; 黄鑫
Original assignee: Oubao Security Technology Co ltd
Current assignee: Oubao Security Technology Co ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2022-07-05
Anticipated expiration: 2031-06-11

Abstract

The utility model discloses a novel two-valve three-speed door closer which comprises a shell, wherein cylinder holes are formed in the shell, a piston column is arranged between the cylinder holes, a blind hole is formed in the piston column, a one-way valve hole is formed in the blind hole end of the piston, a door locking speed adjusting valve hole is formed in the shell, a door closing speed adjusting valve hole is formed in the shell, a door locking speed adjusting valve is arranged at the door locking speed adjusting valve hole, a door closing speed adjusting valve is arranged at the door closing speed adjusting valve hole, a first oil return transverse hole, a second oil return transverse hole and a third oil return transverse hole are formed between the door locking speed adjusting valve hole and the cylinder holes, a first blocking part is formed in the piston column, a second blocking part is formed in the piston column, and a longitudinal communication channel is formed between the bottom end of the door closing speed adjusting hole and the outer end of the cylinder hole. The utility model can effectively avoid the door collision caused by the overlarge door locking angle and the overlarge door locking speed, can also effectively solve the problems that the door locking speed is too slow and the door cannot be locked, and is worthy of popularization and application.

Description

Two-valve three-speed door closer

Technical Field

The utility model relates to a door closer, in particular to a novel two-valve three-speed door closer.

Background

Two valve door closers in the existing market are all that two kinds of speed are adjustable, close door speed and lock door speed, and the speed is about 3 seconds when closing the door, if lock door speed is too fast can lead to a door striking sound too big, and accessories such as fragile door and lock, nevertheless if lock door speed is too slow, then can appear locking the door weak or lock drawback such as not going to the door, to above circumstances, urgently needed a section on the market can close the door fast, the door is closed in the speed reduction and the door closer of three kinds of functions of locking the door fast.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects of the prior art, provides a novel two-valve three-speed door closer capable of quickly closing a door, slowing down the door and quickly locking the door, and meets the requirements of small door closing sound and difficult damage of a door lock.

The utility model adopts the technical scheme for solving the technical problems that: the novel two-valve three-speed door closer comprises a shell, a cylinder hole is arranged in the shell, a piston column is in clearance fit in the cylinder hole, a blind hole is formed in the piston column, a compression spring is arranged between the end face of the blind hole and the end face of the cylinder hole, a group of parallel teeth are arranged at the bottom of the piston column, a gear rod is rotatably connected in the shell, gears matched with the parallel teeth are fixed on the gear rod, a one-way valve hole communicated with the blind hole is formed in the piston column, a sealing ball is arranged in the one-way valve hole, a door locking speed adjusting valve hole is formed in the left end of the outer side of the shell, a door closing speed adjusting hole is formed in the right end of the outer side of the shell, a door locking speed adjusting valve is in threaded fit in the door locking speed adjusting valve hole, a related door speed adjusting valve is in threaded fit in the door closing speed adjusting hole, a first oil return transverse hole, a second oil return transverse hole and a third oil return transverse hole are sequentially formed between the door locking speed adjusting valve hole and the cylinder hole from top to bottom, a first speed oil return transverse hole is formed between the door closing speed adjusting hole and the cylinder hole, a first plugging part is arranged on the left side of the top of the piston column, a second plugging part is arranged on the right side of the top of the piston column, and a longitudinal communication channel is communicated between the bottom end of the door closing speed adjusting hole and the outer end of the cylinder hole; the top ends of the first blocking part and the second blocking part are aligned, the length of the first blocking part is smaller than that of the second blocking part, the length ratio of the first blocking part to the second blocking part is 3:5, the first-speed oil return cross hole is positioned above the second oil return cross hole and below the first oil return cross hole, the ratio of the distance between the second oil return cross hole and the first-speed oil return cross hole to the distance between the first-speed oil return cross hole and the first oil return cross hole is 7:18, and the positions of the first blocking part, the second blocking part, the first oil return cross hole, the second oil return cross hole, the third oil return cross hole and the first-speed oil return cross hole are matched. The cylinder hole, the piston column and the compression spring have the functions of driving the piston column and storing energy for the compression spring; the parallel teeth, the shaft lever and the gear have the effects that the shaft lever is driven to rotate by the connecting rod and can drive the piston column to move, so that the compression spring is compressed and stored energy is stored, and closing force is provided for closing the door; the door locking speed adjusting blind hole, the door closing speed adjusting valve, the first oil return cross hole, the second oil return cross hole, the third oil return cross hole, the first speed oil return cross hole, the door locking speed adjusting valve and the door closing speed adjusting valve have the effects that three steps of quickly closing the door, slowing down to close the door and quickly locking the door when the door is closed can be carried out, and compared with a traditional door closer, the door cannot cause the problems that the door is too loud in impact sound, accessories such as a door lock are not easy to damage, and the problem that the door cannot be locked due to too small force when the door is locked can be solved, and the principles of quickly closing the door, slowing down to close the door and quickly locking the door are as follows: when the opened door is automatically closed through the door closer, the piston column is pressed towards the direction of the sealing ball under the action of the resetting force of the compression spring, the sealing ball is pressed at the one-way valve hole to be dead under the pressure action of hydraulic oil, so that the external hydraulic oil cannot flow to the blind hole through the one-way valve hole, but the hydraulic oil quickly flows back to the cylinder hole through the longitudinal communication channel through the first-speed oil return cross hole (as shown in a first graph and a second graph of FIG. 7), so that the door is closed quickly when the angle of the door is from 90 degrees to 10 degrees, when the door is closed at an angle of 10 degrees to 3 degrees, because the first-speed oil return cross hole is blocked by the second blocking part and the second oil return cross hole is blocked by the first blocking part, the hydraulic oil cannot flow back into the cylinder hole quickly from the first-speed oil return cross hole and the second oil return cross hole, and at the moment, hydraulic oil can only flow back into the cylinder hole slowly from the first oil return cross bore through the third oil return cross bore, thereby the speed that the door closed is slow to close the door slowly, when the piston post continues to be promoted by compression spring's restoring force and moves, at this moment first shutoff portion when not shutoff and open the second oil return cross bore, because first oil return cross bore can carry out the oil extraction simultaneously through second oil return cross bore and third oil return cross bore (as shown in fig. 7 third picture and fourth picture), thereby the door is when 3 to 0 scope, the door closing speed of door increases fast, thereby can carry out the fast impressing and lock the door processing to the lock, can effectively avoid the too big speed of traditional door closer lock door angle to appear hitting the door, also can effectively solve some traditional door closers lock the door speed too slowly, lock the problem of not getting on the door.

Further perfect, the left and right end parts of the gear rod are all fixed with square columns, and the end surfaces of the two square columns are all provided with threaded holes. The square column and the threaded hole are used for facilitating installation of the rocker arm.

Further perfecting, the shell is connected with a cylinder cover for sealing the cylinder hole in a threaded manner. The cylinder cover has the advantages that the hydraulic oil can be conveniently injected and the maintenance and the overhaul are convenient.

Further perfection, the piston column is provided with a connecting hole which enables the gear side cylinder hole to be communicated with the piston column side cylinder hole. The connecting holes have the function of enabling the hydraulic oil to flow back more smoothly.

Further perfect, open the transverse hole that runs through the jar hole on the casing, the transverse hole includes the screw hole of one side and the through-hole of opposite side, and screw hole department screw-thread fit has the tooth axle lid, and it has the installation jack unanimous with the through-hole size to open on the tooth axle lid, and it has a pair of draw-in groove mouth that is located the gear both sides to open on the gear pole, and two draw-in groove mouths department all installs and block the piece. The transverse hole, the threaded hole, the through hole, the gear shaft cover, the mounting jack, the clamping notch and the blocking piece have the advantages that the shaft can be conveniently mounted on the shell and matched with the parallel teeth on the piston column, and the door closer is also conveniently maintained and overhauled.

Further perfection, the shell is provided with a mounting hole. The mounting hole here serves to facilitate the mounting and fixing of the door closer.

The utility model has the beneficial effects that: the door locking device is ingenious and reasonable in structural design, the piston column can be driven and the compression spring can be subjected to energy storage operation by the aid of the cylinder holes, the piston column and the compression spring, the parallel teeth, the shaft lever and the gears are used for driving the shaft lever to rotate by the aid of the connecting rod and driving the piston column to move, so that the compression spring is subjected to compression energy storage to provide closing force for closing the door, and the door can be quickly closed, decelerated and locked by the aid of the door locking speed adjusting valve hole, the door closing speed adjusting valve, the first oil return transverse hole, the second oil return transverse hole, the third oil return transverse hole, the first speed oil return transverse hole, the door locking speed adjusting valve and the door closing speed adjusting valve when the door is closed, so that the door cannot have too high impact sound and cannot damage accessories such as a door lock, and the door locking device is worthy of popularization and application.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a perspective view from another side of the present invention;

FIG. 3 is an exploded view of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 6 is a schematic structural diagram of the principles of the present invention;

fig. 7 is a flow chart of the working principle of the present invention.

Description of the reference numerals: the door locking device comprises a shell 1, a cylinder hole 1-1, a door locking speed adjusting blind hole 1-2, a door closing speed adjusting hole 1-3, a first oil return transverse hole 1-4, a second oil return transverse hole 1-5, a third oil return transverse hole 1-6, a first speed oil return transverse hole 1-7, a longitudinal communication channel 1-8, a transverse hole 1-9, a threaded hole 1-9a, a through hole 1-9b, a mounting hole 1-10, a piston column 2, a blind hole 2-1, parallel teeth 2-2, a first plugging part 2-3, a second plugging part 2-4, a connecting hole 2-5, a one-way valve hole 2-6, a compression spring 3, a gear rod 4, a gear 4-1, a square column 4-2, a threaded hole 4-3, a clamping groove 4-4, a sealing ball 5 and a door locking speed adjusting valve 6, the door closing speed adjusting valve 7, the cylinder cover 8, the gear shaft cover 9, the installation jack 9-1 and the blocking piece 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

With reference to the accompanying drawings: the novel two-valve three-speed door closer comprises a shell 1, wherein a cylinder hole 1-1 is formed in the shell 1, a piston column 2 is in clearance fit in the cylinder hole 1-1, a blind hole 2-1 is formed in the piston column 2, a compression spring 3 is arranged between the end face of the blind hole 2-1 and the end face of the cylinder hole 1-1, a group of parallel teeth 2-2 are arranged at the bottom of the piston column 2, a gear rod 4 is rotatably connected to the shell 1, a gear 4-1 matched with the parallel teeth 2-2 is fixed on the gear rod 4, a one-way valve hole 2-6 communicated with the blind hole 2-1 is formed in the piston column 2, and a sealing ball 5 is arranged in the one-way valve hole 2-6, and is characterized in that: a door locking speed adjusting valve hole 1-2 is arranged at the left end of the outer side of the shell 1, a door closing speed adjusting hole 1-3 is arranged at the right end of the outer side of the shell 1, a door locking speed adjusting valve 6 is in threaded fit at the door locking speed adjusting valve hole 1-2, a door closing speed adjusting valve 7 is in threaded fit at the door closing speed adjusting hole 1-3, a first oil return transverse hole 1-4, a second oil return transverse hole 1-5 and a third oil return transverse hole 1-6 are sequentially formed between the door locking speed adjusting valve hole 1-2 and the cylinder hole 1-1 from top to bottom, a first speed oil return transverse hole 1-7 is formed between the door closing speed adjusting hole 1-3 and the cylinder hole 1-1, a first blocking part 2-3 is arranged at the left side of the top of the piston column 2, a second blocking part 2-4 is arranged at the right side of the top of the piston column 2, and a longitudinal communication channel is communicated between the bottom end of the door closing speed adjusting hole 1-3 and the outer end of the cylinder hole 1-1 1 to 8; the top ends of the first plugging parts 2-3 and the second plugging parts 2-4 are aligned, the length of the first plugging parts 2-3 is smaller than that of the second plugging parts 2-4, the ratio of the lengths of the first plugging parts 2-3 to the second plugging parts 2-4 is 3:5, the first-speed oil return cross holes 1-7 are positioned on the upper side of the second oil return cross holes 1-5 and on the lower side of the first oil return cross holes 1-4, the ratio of the distance between the second oil return cross holes 1-5 and the first-speed oil return cross holes 1-7 to the distance between the first-speed oil return cross holes 1-7 and the first-speed oil return cross holes 1-4 is 7:18, the positions of the first plugging part 2-3, the second plugging part 2-4, the first oil return cross hole 1-4, the second oil return cross hole 1-5, the third oil return cross hole 1-6 and the first speed oil return cross hole 1-7 are matched.

The left end and the right end of the gear rod 4 are both fixed with square columns 4-2, and the end surfaces of the two square columns are both provided with threaded holes 4-3.

A cylinder head 8 for sealing the cylinder hole 1-1 is screwed to the housing 1.

The piston column 2 is provided with a connecting hole 2-5 for communicating the cylinder hole 1-1 on the gear 4-1 side with the cylinder hole 1-1 on the piston column 2 side.

The shell 1 is provided with transverse holes 1-9 penetrating through the cylinder holes 1-1, the transverse holes 1-9 comprise threaded holes 1-9a on one side and through holes 1-9b on the other side, a gear shaft cover 9 is in threaded fit with the threaded holes 1-9a, installation insertion holes 9-1 with the size being consistent with that of the through holes 1-9b are formed in the gear shaft cover 9, a pair of clamping grooves 4-4 located on two sides of the gear are formed in the gear rod 4, and blocking pieces 10 are installed at the positions of the two clamping grooves 4-4.

The shell 1 is provided with mounting holes 1-10.

The working principle of the utility model is as follows: when the opened door is automatically closed through the door closer, the piston column 2 is pressed towards the sealing ball 5 through the action of the reset force of the compression spring 3, the sealing ball 5 is pressed at the one-way valve hole 2-6 under the pressure action of hydraulic oil, so that the external hydraulic oil cannot flow to the blind hole 2-1 through the one-way valve hole, but the hydraulic oil quickly flows back into the cylinder hole 1-1 through the longitudinal communication channel 1-8 through the first speed oil return cross hole 1-7 (as shown in the first drawing and the second drawing of fig. 7), so that the door is quickly closed when the angle of the door is from 90 degrees to 10 degrees (the door is controlled by the door closing speed regulating valve 7 to realize stepless speed regulation, and the door is normally closed at a higher speed), when the angle of the door is from 10 degrees to 3 degrees, because the first speed oil return cross hole 1-7 is blocked by the second blocking part 2-4, the second oil return cross hole 1-5 is blocked by the first blocking part 2-3, hydraulic oil can not flow back into the cylinder hole 1-1 from the first speed oil return cross hole 1-7 and the second oil return cross hole 1-5 quickly, at this time, hydraulic oil can only flow back to the cylinder hole 1-1 from the first oil return cross hole 1-4 through the third oil return cross hole 1-6 slowly, so that the closing speed of the door is slow, and the door is closed slowly (the closing speed is controlled by the door locking speed adjusting valve 6 to realize stepless debugging, and the slow speed is generally selected to be closed), when the piston column 2 continues to be pushed by the restoring force of the compression spring 3 to move, at this time, the first speed oil return cross hole 1-7 is still blocked by the second blocking part 2-4, and the first blocking part 2-3 unblocks the second oil return cross hole 1-5 and opens, As the first oil return cross holes 1-4 can discharge hydraulic oil through the second oil return cross holes 1-5 and the third oil return cross holes 1-6 (as shown in the third drawing and the fourth drawing of fig. 7), the door closing speed is rapidly increased when the door is closed within the range of the door closing angle from 3 degrees to 0 degrees, and the door lock on the door can be rapidly pressed and locked; here impress the lock fast, can effectively avoid traditional door closer angle too big speed too fast and the condition emergence of accessory such as collision, fragile door and lock appears like this, also can effectively solve traditional door closer speed of locking too slow, the problem of locking not last door, is worth popularizing and applying.

While the utility model has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims

1. A novel two-valve three-speed door closer comprises a shell (1), wherein a cylinder hole (1-1) is formed in the shell (1), a piston column (2) is arranged in the cylinder hole (1-1) in a clearance fit mode, a blind hole (2-1) is formed in the piston column (2), a compression spring (3) is installed between the end face of the blind hole (2-1) and the end face of the cylinder hole (1-1), a group of parallel teeth (2-2) are arranged at the bottom of the piston column (2), a gear rod (4) is connected in the shell (1) in a rotating mode, gears (4-1) matched with the parallel teeth (2-2) are fixed on the gear rod (4), one-way valve holes (2-6) communicated with the blind hole (2-1) are formed in the piston column (2), and sealing balls (5) are installed in the one-way valve holes (2-6), the method is characterized in that: the left end of the outer side of the shell (1) is provided with a door locking speed adjusting valve hole (1-2), the right end of the outer side of the shell (1) is provided with a door closing speed adjusting hole (1-3), the door locking speed adjusting valve hole (1-2) is in threaded fit with a door locking speed adjusting valve (6), the door closing speed adjusting hole (1-3) is in threaded fit with a door closing speed adjusting valve (7), a first oil return transverse hole (1-4), a second oil return transverse hole (1-5) and a third oil return transverse hole (1-6) are sequentially formed between the door locking speed adjusting valve hole (1-2) and a cylinder hole (1-1) from top to bottom, a first speed oil return transverse hole (1-7) is formed between the door closing speed adjusting hole (1-3) and the cylinder hole (1-1), and a first blocking part (2-3) is arranged on the left side of the top of the piston column (2), a second plugging part (2-4) is arranged on the right side of the top of the piston column (2), and a longitudinal communication channel (1-8) is communicated between the bottom end of the door closing speed adjusting hole (1-3) and the outer end of the cylinder hole (1-1).

2. The new two-valve three-speed door closer of claim 1, wherein: the left end and the right end of the gear rod (4) are both fixed with square columns (4-2), and the end faces of the two square columns are both provided with threaded holes (4-3).

3. The new two-valve three-speed door closer of claim 1, wherein: and a cylinder cover (8) for sealing the cylinder hole (1-1) is connected to the shell (1) in a threaded manner.

4. The new two-valve three-speed door closer of claim 1, wherein: the piston column (2) is provided with a connecting hole (2-5) which enables the side cylinder hole (1-1) of the gear (4-1) to be communicated with the side cylinder hole (1-1) of the piston column (2).

5. The new two-valve three-speed door closer of claim 1, wherein: the gear rack is characterized in that a transverse hole (1-9) penetrating through a cylinder hole (1-1) is formed in the shell (1), the transverse hole (1-9) comprises a threaded hole (1-9a) in one side and a through hole (1-9b) in the other side, a gear shaft cover (9) is in threaded fit with the threaded hole (1-9a), an installation insertion hole (9-1) with the size being identical to that of the through hole (1-9b) is formed in the gear shaft cover (9), a pair of clamping groove openings (4-4) located on two sides of a gear is formed in the gear rod (4), and blocking pieces (10) are installed at the two clamping groove openings (4-4).

6. The new two-valve three-speed door closer of claim 1, wherein: the shell (1) is provided with mounting holes (1-10).