CN112282552A

CN112282552A - Labor-saving door opening mechanism of door closer

Info

Publication number: CN112282552A
Application number: CN202011115700.7A
Authority: CN
Inventors: 卢跃飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-01-29

Abstract

The invention relates to the technical field of door closers, and discloses a labor-saving door opening mechanism of a door closer, which comprises a shell, wherein the upper end of the shell is movably connected with a connecting rod, the middle part of an inner cavity of the shell is movably sleeved with a ratchet piston rod, and the middle part of the ratchet piston rod is movably connected with one end of the connecting rod through a driving wheel. According to the door closer, the lever labor-saving structure is arranged, so that when the door closer works by pushing the door plate, the driving wheel can be driven to rotate through the connecting rod, the ratchet piston rod moves to one side far away from the hydraulic tank, and the clamping block moves to the right side under the action of friction force when the ratchet piston rod moves, so that the axle center rod on the right side of the lever block is clamped, the force arm is increased when the ratchet piston rod pushes one end of the lever block to compress the first spring, the force for compressing the first spring is reduced when the door is opened, and the problem that the door cannot be opened by people with small strength, such as old people or children, due to the fact that the rigidity of the spring of a traditional door closer is high is solved.

Description

Labor-saving door opening mechanism of door closer

Technical Field

The invention relates to the technical field of door closers, in particular to a labor-saving door opening mechanism of a door closer.

Background

The door closer is a spring-like hydraulic device on the door head, and can release after being compressed after the door is opened, so that the door is automatically closed, the spring-like door has the effect of ensuring that the door is accurately and timely closed to an initial position after being opened, the hydraulic door closer is different from the traditional door closer and achieves the buffer effect by throttling liquid in the door closer, the core of the design idea of the hydraulic door closer is to realize the control of the door closing process, so that various functional indexes of the door closing process can be adjusted according to the needs of people, and the door closing rate of the door can be controlled, the door closer is mainly used in commercial and public buildings, but also has the condition of being used at home, and has a plurality of purposes, wherein the most main purpose is to enable the door to be automatically closed so as to limit the spread of fire and the ventilation in the building.

Traditional hydraulic pressure door closer is at normal during operation, because make its inside piston rod reset through the spring, and extrude hydraulic oil, make it reach the effect of slowly closing, then when opening the door, need overcome spring force with great power, make the spring compression, just can make the door open, and to child and old man, required dynamics is too big, lead to being difficult to open the door, escape speed when having influenced the conflagration and taking place, and when making the door plant slowly close through the door closer, if the door closer appears because live time overlength, lead to the inside condition that the oil leak appears, just can lead to the unable slowly closing of door plant, thereby under the effect that the spring resets, the door plant is closed vigorously, influence the working life of door plant, the hidden danger that door plant pressed from both sides people can appear even takes place.

Disclosure of Invention

Aiming at the defects of the existing door closer in the use process in the background technology, the invention provides a labor-saving door opening mechanism of the door closer, which has the advantages of labor saving in opening the door and speed limiting for closing the door and solves the technical problems in the background technology.

The invention provides the following technical scheme: a labor-saving door opening mechanism of a door closer comprises a shell, wherein the upper end of the shell is movably connected with a connecting rod, a ratchet piston rod is movably sleeved in the middle of an inner cavity of the shell, the middle part of the ratchet piston rod is movably connected with one end of the connecting rod through a driving wheel, a hydraulic tank positioned at one end of the ratchet piston rod is fixedly installed in the inner cavity of the shell, the hydraulic tank is provided with a left inner cavity and a right inner cavity, the lower half part of a middle partition plate is provided with a first one-way hole, the upper half part of the middle partition plate of the hydraulic tank is provided with a second one-way hole, a lever block positioned at the other end of the ratchet piston rod is movably installed in the inner cavity of the shell, a fixed block positioned in the middle of the other end of the ratchet piston rod is fixedly connected with the inner cavity of the shell, the, the ratchet mechanism comprises a lever block, a limiting plate, a clamping block and a ratchet piston rod, wherein the lever block is arranged in the middle of the lever block, the middle of the lever block is arranged on the left side of the middle of the lever block, the limiting plate is fixedly connected with an inner cavity of a shell and is arranged at one end of the ratchet piston rod, the clamping block is movably sleeved on the outer surface of the ratchet piston rod and is arranged.

Preferably, the middle part fixedly connected with second spring of hydraulic pressure case upper surface one end, the other end fixedly connected with movable block of second spring, hydraulic pressure case middle part baffle department sets up the square groove that is located the one-way hole middle part of second, and the lower extreme in square groove has placed and has sealed the board, it is made that board and movable block are magnetic material to seal, and the two is inhaled mutually.

Preferably, one end of the ratchet piston rod, which is located in the hydraulic tank, is fixedly connected with a connecting block, the connecting block is made of a magnetic material, and the left end of the connecting block is different from the right end of the movable block in magnetic pole.

The invention has the following beneficial effects:

1. according to the door closer, the lever labor-saving structure is arranged, so that when the door closer works by pushing the door plate, the driving wheel can be driven to rotate through the connecting rod, the ratchet piston rod moves to one side far away from the hydraulic tank, and the clamping block moves to the right side under the action of friction force when the ratchet piston rod moves, so that the axle center rod on the right side of the lever block is clamped, the force arm is increased when the ratchet piston rod pushes one end of the lever block to compress the first spring, the force for compressing the first spring is reduced when the door is opened, and the problem that the door cannot be opened by people with small strength, such as old people or children, due to the fact that the rigidity of the spring of a traditional door closer is high is solved.

2. According to the invention, the door closing speed limiting mechanism is additionally arranged, after the door plate is opened, the first spring is compressed, so that the force for retracting the ratchet piston rod is larger, the door closer is slowly closed and fails due to oil leakage in the inner cavity of the door closer, the door plate is quickly closed under the action of quick resetting of the ratchet piston rod, at the moment, the rotating speed of the door plate is higher, the movable block moves outwards under the action of centrifugal force, so that the sealing plate moves upwards under the action of attraction of the movable block and the sealing plate, and the second one-way hole is sealed, so that when the ratchet piston rod is reset, gas in the right cavity of the hydraulic cavity is discharged through the second one-way hole, the second one-way hole is sealed, the discharge rate of the gas is reduced, and the speed of the door plate is limited when the door plate is closed.

3. According to the door closer, the connecting block is additionally arranged at the left end of the ratchet piston rod, so that the ratchet piston rod and the movable block can be attracted through the connecting block, when the door closer normally opens the door plate, the movement of the ratchet piston rod can be divided into two stages of movement for overcoming magnetic attraction and movement for overcoming spring elasticity, the required maximum force is small when the ratchet piston rod is moved through sectional movement, the normal door opening of a person with small strength is further ensured, and after the door plate is closed, the ratchet piston rod is separated from the lever block, so that the lever block can be automatically corrected through the first spring, and the working efficiency of the door closer when the door is normally opened next time is ensured.

Drawings

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

FIG. 2 is a perspective view of a structural clamping block of the present invention;

FIG. 3 is a perspective view of a lever block of the present invention;

FIG. 4 is a schematic front view of a structural block of the present invention;

FIG. 5 is an enlarged view of the point A in FIG. 1.

In the figure: 1. a housing; 2. a connecting rod; 3. a ratchet piston rod; 4. a drive wheel; 5. a hydraulic tank; 6. a first one-way hole; 7. a second one-way hole; 8. a lever block; 9. a fixed block; 10. a first spring; 11. a spindle rod; 12. a clamping block; 13. a limiting plate; 14. a second spring; 15. a movable block; 16. a sealing plate; 17. and (4) connecting the blocks.

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.

Referring to fig. 1-5, a labor-saving door opening mechanism of a door closer comprises a housing 1, a connecting rod 2 is movably connected to the upper end of the housing 1, a ratchet piston rod 3 is movably sleeved in the middle of an inner cavity of the housing 1, the middle of the ratchet piston rod 3 is movably connected with one end of the connecting rod 2 through a driving wheel 4, a hydraulic tank 5 located at one end of the ratchet piston rod 3 is fixedly installed in the inner cavity of the housing 1, the hydraulic tank 5 is provided with a left inner cavity and a right inner cavity, a first one-way hole 6 is arranged at the lower half part of a middle partition plate, a second one-way hole 7 is arranged at the upper half part of the middle partition plate of the hydraulic tank 5, a lever block 8 located at the other end of the ratchet piston rod 3 is movably installed in the inner cavity of the housing 1, a fixing block 9 located in the middle of the other end of the ratchet piston rod 3 is, the number of the axial center rods 11 is two, the two axial center rods are respectively positioned at the middle part and the left side of the middle part of the lever block 8, the inner cavity of the shell 1 is fixedly connected with a limiting plate 13 positioned at one end of the ratchet piston rod 3, the outer surface of the ratchet piston rod 3 is movably sleeved with a clamping block 12 positioned between the fixing block 9 and the limiting plate 13, one end of the clamping block 12 is in a ratchet shape, when the door plate is rotated, the driving wheel 4 is rotated under the action of the connecting rod 2, so that the ratchet piston rod 3 moves rightwards, hydraulic oil in the left cavity of the hydraulic tank 5 is pumped into the right cavity of the hydraulic tank 5 through the first one-way hole 6, when the ratchet piston rod 3 moves, the clamping block 12 is driven to move rightwards through the ratchet piston rod 3, the clamping block 12 is limited by the limiting plate 13, so that the ratchet end of the clamping block 12 clamps the axial center, can be through increasing the power arm, reduce resistance arm, make the power when the first spring 10 of extrusion suitably reduce to the guarantee when opening the door, required dynamics can not be too big, has avoided when emergency such as conflagration appears, the problem that the less personnel of strength can't open the door fast.

Wherein, when guaranteeing the door closer at self-closing, the door plant can be closed completely, make when first spring 10 resets, under the effect of lever piece 8, ratchet piston rod 3 moves the certain distance to the left, and drive fixture block 12 and move to the left, thereby make lever piece 8 axle center pole 11 leftmost released, and the axle center pole 11 that is located lever piece 8 middle part is blocked, make the power arm when ratchet piston rod 3 atress increases when first spring 10 resets, the resistance arm subtracts the weak point, make when ratchet piston rod 3 resets, first spring 10 still can push back ratchet piston rod 3 normal position after the loss certain power, the efficiency of closing the door of door closer has been ensured.

Wherein, the middle part of one end of the upper surface of the hydraulic tank 5 is fixedly connected with a second spring 14, the other end of the second spring 14 is fixedly connected with a movable block 15, a middle partition board of the hydraulic tank 5 is provided with a square groove positioned in the middle of a second one-way hole 7, the lower end of the square groove is provided with a sealing plate 16, the sealing plate 16 and the movable block 15 are made of magnetic materials and attract each other, when the door closer is used for normally and automatically slowly closing the door, the door closer can cause the leakage of internal hydraulic oil after being used for a long time, so that the slow closing function of the door closer is damaged, the rotating speed of the door panel is too fast when the door is closed, at the moment, under the action of centrifugal force, the movable block 15 overcomes the elastic force of the second spring 14 to move outwards, and after moving for a certain distance, under the action of the magnetic attraction between the movable block 15 and the sealing plate 16, the sealing plate 16, the air and the hydraulic oil in the right chamber of the hydraulic tank 5 can not be discharged outwards after being extruded by the ratchet piston rod 3, so that the first spring 10 can not be reset successfully, the position of the door plate is fixed, and the speed limiting effect of the door plate when the rotating speed is too high is achieved.

Wherein, one end of the ratchet piston rod 3 positioned in the hydraulic tank 5 is fixedly connected with a connecting block 17, the connecting block 17 is made of magnetic material, the left end of the connecting block 17 has a magnetic pole different from that of the right end of the movable block 15, so that when the door plate is normally closed, under the action of the automatic reset of the first spring 10, the ratchet piston rod 3 moves leftwards, when the door panel is slowly closed, after the ratchet piston rod 3 moves greatly, the left end of the connecting block 17 and the right end of the movable block 15 are attracted mutually, the ratchet piston rod 3 is ensured to be completely reset, the door plate can be completely closed, and the movement when opening the door panel is divided into two stages of overcoming the magnetic attraction force and the elastic force of the first spring 10, so that the maximum force for opening the door panel is smaller, and when the force capable of enabling the door panel to rotate is continuously applied, the door plate can be opened, and the problem that the larger the opening amplitude of the traditional hydraulic door closer is, the larger the required force is solved.

The using method of the invention is as follows: a shell 1 of the door closer is arranged at the upper end of a door plate, and one end of a connecting rod 2, which is far away from the shell 1, is arranged on a wall body at the upper end of the door plate at a certain angle;

when the door is opened: when the door is manually pushed, the door plate rotates around the shaft to deform the connecting rod 2, so that the driving wheel 4 rotates, the ratchet piston rod 3 moves towards one end under the meshing action of the driving wheel 4 and the ratchet piston rod 3, the left end of the ratchet piston rod 3 moves to enable hydraulic oil in the left chamber of the hydraulic tank 5 to be pumped into the right chamber of the hydraulic tank 5 through the first one-way hole 6, when the door plate is just opened, the ratchet piston rod 3 only needs to overcome the magnetic force of the adjacent near ends of the connecting block 17 and the movable block 15, the door plate can be opened preliminarily only with small force due to small magnetic force relative to thrust, after the ratchet piston rod 3 moves for a certain distance, the other end of the ratchet piston rod 3 contacts with one end of the lever block 8, and under the action of friction between the outer surface of the piston rod 3 and the middle part of the fixture block 12, the fixture block 12 moves for a certain distance rightwards, so that the ratchet end at the left end of, when the door plate is pushed open subsequently, under the action of the connecting rod 2 and the driving wheel 4, the ratchet piston rod 3 moves rightwards, one end of the ratchet piston rod 3 pushes one end of the lever block 8, the lever block 8 rotates around the clamped axle center rod 11, the first spring 10 is compressed, the force arm length when the first spring 10 is compressed is lengthened, and therefore the force required for compressing the first spring 10 is reduced, and the door plate can be opened only with small force;

when the door is automatically closed: after the door plate is opened, the door closer automatically and slowly closes the door, under the action of the reset of the first spring 10, the lever block 8 is enabled to rotate reversely around the clamped axial rod 11, so that one end of the lever block 8, which is contacted with the ratchet piston rod 3, pushes the ratchet piston rod 3 to move leftwards, hydraulic oil in the right cavity of the hydraulic tank 5 is extruded by the left end of the ratchet piston rod 3, the hydraulic oil flows back to the left cavity of the hydraulic tank 5 from the second one-way hole 7 with smaller aperture, so that the ratchet piston rod 3 can be reset slowly, the door plate can be closed slowly, under the action of the friction force of the ratchet piston rod 3 and the clamping block 12, the clamped axial rod 11 is released, the axial rod 11 in the middle of the lever block 8 is clamped, so that the first spring 10 is reset, when the lever block 8 rotates, the force arms at two ends of the clamped first spring 10 are the same, so that the first spring 10 can overcome the force loss, slowly pushing back the ratchet piston rod 3, and after the first spring 10 finishes resetting, moving the ratchet piston rod 3 to the left for a certain distance under the action of magnetic attraction of the movable block 15 and the connecting block 17, so that the ratchet piston rod 3 finishes final resetting and completely closes the door plate;

when the slow closing fails: when the door plate is closed, because the hydraulic oil is less, the door plate is quickly closed under the action of the first spring 10, at the moment, under the action of centrifugal force, the movable block 15 overcomes the tensile force of the second spring 14 and moves outwards, so that under the action of attraction between the movable block 15 and the sealing plate 16, the sealing plate 16 moves upwards, the second one-way hole 7 is completely sealed, the hydraulic oil and the air in the right cavity of the hydraulic tank 5 cannot be discharged, the closing of the door plate is stopped, after the centrifugal force disappears, the movable block 15 resets under the action of the second spring 14, the sealing plate 16 loses the magnetic attraction and falls downwards, the second one-way hole 7 is opened again, the door plate can be closed again, and the effect of limiting the speed of slow closing is achieved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a laborsaving mechanism of opening door of door closer, includes casing (1), the upper end swing joint of casing (1) has connecting rod (2), ratchet piston rod (3) have been cup jointed in the middle part activity of casing (1) inner chamber, the one end swing joint of drive wheel (4) and connecting rod (2) is passed through at the middle part of ratchet piston rod (3), the inner chamber fixed mounting of casing (1) has hydraulic tank (5) that are located ratchet piston rod (3) one end, two inner chambers about hydraulic tank (5) have been seted up, and intermediate bottom's lower half has seted up first one-way hole (6), second one-way hole (7), its characterized in that have been seted up to first of hydraulic tank (5) intermediate bottom: the utility model discloses a ratchet mechanism, including casing (1), inner chamber swing joint, fixed block (11), axle center pole (11), and the quantity of axle center pole (11) be two, be located the middle part and the middle part left side of lever piece (8) respectively, the inner chamber fixedly connected with of casing (1) has lever piece (8) that are located the ratchet piston rod (3) other end, the inner chamber fixedly connected with of casing (1) is located fixed block (8) at ratchet piston rod (3) other end middle part, fixed block (9) are through first spring (10) and lever piece (8) swing joint, the inner chamber fixedly connected with of casing (1) is located limiting plate (13) of ratchet piston rod (3) one end, the surface activity of ratchet piston rod (3) has cup jointed fixture block (12) that are located between fixed block (9) and limiting plate (13), and the one end of fixture block (12) is the ratchet.

2. The labor-saving door opening mechanism of a door closer according to claim 1, characterized in that: middle part fixedly connected with second spring (14) of hydraulic pressure case (5) upper surface one end, the other end fixedly connected with movable block (15) of second spring (14), hydraulic pressure case (5) middle part baffle department sets up the square groove that is located the one-way hole of second (7) middle part, and the lower extreme in square groove has placed and has sealed board (16), it is magnetic material to make to seal board (16) and movable block (15), and the two attracts mutually.

3. The labor-saving door opening mechanism of a door closer according to claim 1, characterized in that: the ratchet piston rod (3) is located one end fixedly connected with connecting block (17) in hydraulic tank (5), and connecting block (17) are made of magnetic material, the left end of connecting block (17) is different from the right-hand member magnetic pole of movable block (15).