CN210685681U - Door closer and automatic control system of movable door thereof - Google Patents
Door closer and automatic control system of movable door thereof Download PDFInfo
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- CN210685681U CN210685681U CN201920647714.XU CN201920647714U CN210685681U CN 210685681 U CN210685681 U CN 210685681U CN 201920647714 U CN201920647714 U CN 201920647714U CN 210685681 U CN210685681 U CN 210685681U
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Abstract
The utility model provides a door closer and floating gate automatic control system thereof, include: a housing; the bobbin assembly is arranged on the shell, and a traction rope is wound on the bobbin assembly; the scroll spring is arranged in the bobbin assembly, one end of the scroll spring is fixed on the gear shaft, and the other end of the scroll spring is fixed on the shell; the adjusting rod is arranged on the outer side of the shell, one end of the adjusting rod is connected to the shell, and the other end of the adjusting rod abuts against the tooth grooves of the gear shaft; the utility model discloses an one of the purpose is through the cooperation of spool subassembly structure and haulage rope realization reduction noise of operation, and the second of the purpose is through setting up the effect of adjusting pole and gear shaft cooperation in order to realize adjusting volute spiral spring's elasticity and fixed in order to reach the size of adjusting spring force to adapt to the door of equidimension not, light and heavy, elasticity.
Description
Technical Field
The utility model relates to a door closer technical field, in particular to door closer and floating gate automatic control system thereof.
Background
The buffering effect of the door closer commonly used at present is formed by pushing piston hydraulic oil through a pressure spring, the speed of the door closer is realized by adjusting the section of a hydraulic oil return channel, a screw is fixedly arranged at a specific position of a door during use, and the door closer has a plurality of defects in use: firstly, when the existing door closer is used for a long time, the abrasion between a piston and a cylinder body of the existing door closer can reduce or lose the buffering effect; secondly, the existing door closer achieves the purpose of buffering by taking hydraulic oil as a mediator, the change of temperature difference has great influence on the viscosity and the fluidity of the hydraulic oil, the effect difference of different regions is great in different seasons, and if electric heating is adopted, the safety and the practicability are insufficient; and thirdly, the door has the advantages of size, weight and tightness, the force required for opening and closing the door is different, the force of the door closer comes from a pressure spring, the acting force is constant, no adjusting function is provided, when the door is in different types, the feeling of very heavy initial force is often generated when the door is opened, and the phenomenon that the door is easily collided with a door frame to generate noise or is not closed in place when the door is closed is often generated.
Thus, improvements are urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a door closer, include:
a housing;
the bobbin assembly is arranged on the shell, and a traction rope is wound on the bobbin assembly;
the scroll spring is arranged in the bobbin assembly, one end of the scroll spring is fixed on the gear shaft, and the other end of the scroll spring is fixed on the shell;
the adjusting rod is arranged on the outer side of the shell, one end of the adjusting rod is connected to the shell, and the other end of the adjusting rod abuts against the tooth grooves of the gear shaft.
Specifically, the bobbin assembly comprises a bobbin and two bobbin sleeves, and the bobbin assembly is movably connected with the shell through the gear shaft
And a snap spring is further arranged to lock the gear shaft.
Specifically, be provided with a plurality of in the bobbin subassembly spacing post and at least one location tip, a plurality of spacing post centers on the inner wall interval of barrel casing sets up, the location tip sets up two between the spacing post, the outer end of volute spiral spring is provided with outer portion of colluding, outer portion of colluding passes through the location is fixed slightly in the bobbin subassembly.
Specifically, the gear shaft includes pivot and gear, the pivot is provided with the slot, the inner of volute spiral spring is provided with the inner portion of colluding, the inner portion of colluding inserts in the slot.
Specifically, the adjusting rod is provided with a fixing part, an installation part and an elastic stop part, the stop part abuts against the gear, the installation part is fixed on the shell through a screw, and the fixing part is inserted into the shell to fix the adjusting rod; the adjusting rod is matched with the gear shaft to lock the volute spiral spring.
Specifically, an angle plate is arranged at the position of the shell and is connected with the shell through a screw bolt, a first wire groove is formed in the angle plate, the tail end of the traction rope penetrates through the first wire groove, and a stop block is arranged at the tail end of the traction rope;
the cable drum is provided with a second wire groove, the head end of the traction rope is clamped into the second wire groove and then wound around the cable drum, and a clamping block is further arranged at the head end of the traction rope.
Specifically, the height of the stop plate of the stop block is greater than that of the first wire slot, and the height of the clamping block is greater than that of the second wire slot.
Specifically, the scroll spring is a contact type scroll spring.
The utility model also provides a floating gate automatic control system, include:
the track is provided with a rack;
the buffer piece is arranged at the tail end of the track close to the tail end;
the anti-collision positioning piece is arranged at the tail end of the track;
the connecting pieces are symmetrically arranged at the top of the door body at intervals and are provided with
A controller in meshed connection with the track, an
A detent slidably connected to the track, an
The door closer is arranged at the head end of the track and is detachably connected with the stopping device.
Specifically, a traction pin and a stop pin are arranged on the stop device, a traction rope is sleeved on the traction pin, and the stop pin is in meshed connection with the track.
The utility model provides a door closer and floating gate automatic control system thereof, include: a housing; the bobbin assembly is arranged on the shell, and a traction rope is wound on the bobbin assembly; the scroll spring is arranged in the bobbin assembly, one end of the scroll spring is fixed on the gear shaft, and the other end of the scroll spring is fixed on the shell; the adjusting rod is arranged on the outer side of the shell, one end of the adjusting rod is connected to the shell, and the other end of the adjusting rod abuts against the tooth grooves of the gear shaft; the utility model discloses an one of the purpose is through the cooperation of spool subassembly structure and haulage rope realization reduction noise of operation, and the second of the purpose is through setting up the effect of adjusting pole and gear shaft cooperation in order to realize adjusting volute spiral spring's elasticity and fixed in order to reach the size of adjusting spring force to adapt to the door of equidimension not, light and heavy, elasticity.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is an exploded view of an embodiment provided by the present invention;
fig. 2 is a perspective view of an embodiment of the present invention;
fig. 3 is a second perspective view of an embodiment of the present invention;
fig. 4 is a schematic view of an overall structure of a bobbin assembly according to an embodiment of the present invention;
fig. 5 is a schematic view of an internal structure of a bobbin assembly according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a bobbin according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a gear shaft according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an adjusting lever according to an embodiment of the present invention;
fig. 9 is a schematic structural view of a corner plate according to an embodiment of the present invention.
The reference numbers illustrate:
the utility model discloses a casing 1, bobbin subassembly 2, bobbin 21, second wire casing 211, barrel casing 22, spacing post 221, location tip 222, haulage rope 23, rope casing 231, end piece 232, backstop 2321, fixed block 2322, fixture block 233, volute spiral spring 3, outer hook 31, inner hook 32, gear shaft 4, pivot 41, slot 411, recess 412, mounting groove 413, gear 42, adjust pole 5, fixed part 51, installation department 52, elasticity end piece 53, scute 6, first wire casing 61, first cross slot 611, second cross slot 612, jump ring 7, the utility model discloses the realization, functional characteristics and the advantage of purpose will combine the embodiment, do further explanation with the attached drawing.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 to 8, the present invention provides a door closer, including:
a housing 1;
the bobbin assembly 2 is arranged on the shell 1, and a traction rope 23 is wound on the bobbin assembly 2;
the scroll spring 3 is arranged in the bobbin assembly 2, one end of the scroll spring 3 is fixed on the gear shaft 4, and the other end of the scroll spring 3 is fixed on the shell 1;
the adjusting rod 5 is arranged on the outer side of the shell 1, one end of the adjusting rod 5 is connected to the shell 1, and the other end of the adjusting rod 5 abuts against the tooth grooves of the gear shaft 4.
As shown in fig. 1 to 8, one of the purposes of the present invention is to realize the noise reduction and the stable operation speed by the cooperation of the structure of the bobbin assembly 2 and the pulling rope 23, and the other purpose is to realize the effect of adjusting the tightness of the volute spiral spring 3 and fixing the volute spiral spring by setting the adjusting rod 5 to cooperate with the gear shaft 4, specifically, the housing 1 in this embodiment is provided with an opening with two opposite ends, the bobbin assembly 2 is placed into the housing 1 through the opening and fixed by the gear shaft 4, the pulling rope 23 is wound on the bobbin assembly 2, when the pulling rope 23 extends out of the housing 1 during operation, the bobbin assembly 2 is driven to rotate, the pulling rope 23 stretches and reciprocates, and has no friction resistance, thereby realizing the effect of noise reduction; one end of the volute spiral spring 3 is fixed on the gear shaft 4, the other end of the volute spiral spring is fixed on the shell 1, the volute spiral spring 3 is tightened and stores force when the door body is opened, and the volute spiral spring 3 releases elastic potential energy and drives the door body to be closed stably when the door body is closed; when the gear shaft 4 is rotated, the volute spiral spring 3 is tightened or loosened, one end, which is abutted to the tooth grooves of the gear shaft 4, of the adjusting rod 5 is pressed or rebounded to abut to the gear shaft 4 along with the rotation of the gear shaft 4, and therefore the volute spiral spring 3 is fixed in tightness.
Specifically, the bobbin assembly 2 comprises a bobbin 21 and two sleeves 22, the bobbin assembly 2 is movably connected with the shell 1 through the gear shaft 4, and the clamping spring 7 is further arranged to lock the gear shaft 4.
Two 22 parts of barrel casing are installed respectively the both sides of line section of thick bamboo 21, the center department of barrel casing 22 is provided with the through-hole, gear shaft 4 passes the through-hole with jump ring 7 joint, jump ring 7 with 1 bolted connection of casing is in order to pin gear shaft 4, simple structure, and when daily operation was maintained, the accessible was rotatory gear shaft 4 to reach the purpose of adjusting the torsion size.
Further, a plurality of limiting columns 221 and at least one positioning pin 222 are arranged in the bobbin component 2, the plurality of limiting columns 221 are arranged at intervals around the inner wall of the bobbin case 22, the positioning pin 222 is arranged between the two limiting columns 221, an outer end of the volute spiral spring 3 is provided with an outer hook portion 31, and the outer hook portion 31 is slightly fixed in the bobbin component 2 through the positioning.
The limiting posts 221 are uniformly distributed on the inner wall of the barrel sleeve 22 at intervals, through holes of the limiting posts 221 are arranged outwards, the limiting posts 221 are connected with the barrel sleeve through screws, and the spiral spring 3 is well abutted against the limiting posts 221 when being placed in the wire barrel 21 so as to fix the spiral spring 3 and avoid displacement; the outer end of the spiral spring 3 is bent to form an outer hook 31, and the outer hook 31 can hook the positioning pin 222 to further fix the spiral spring 3 to prevent deviation or rotation.
Specifically, the gear shaft 4 includes a rotation shaft 41 and a gear 42, the rotation shaft 41 is provided with an insertion groove 411, an inner end of the spiral spring 3 is provided with an inner hook 32, and the inner hook 32 is inserted into the insertion groove 411.
The rotating shaft 41 and the gear 42 are riveted, the gear 42 is arranged at one end of the rotating shaft 41, and a groove 412 is arranged at one end of the rotating shaft 41 close to the gear 42 on the axis
On the principle of the axis of the rotating shaft 41, one end of the gear 42 is provided with a slot 411, and the tail end of the rotating shaft 41, which is provided with the slot 411, is also provided with a mounting groove 413 for mounting the snap spring 7, so as to lock the gear shaft 4; the inner of volute spiral spring 3 is bent and is provided with interior colluding portion 32, interior colluding portion 32 inserts in order fixed in the slot 411 interior colluding portion 32, on the moment transmission gear shaft 4 when opening through the door body, the moment of torsion does work, stores the energy in volute spiral spring, and after the external force of acting on the door body was removed, release energy in the volute spiral spring made spool subassembly 2 rotatory, and the haulage rope 23 on the drive volute spool subassembly 2 is drawing and is making the door body close to realize the self-closing of the door body.
Specifically, the adjusting lever 5 is provided with a fixing portion 51, a mounting portion 52 and an elastic stopper portion 53, the stopper portion abuts against the gear 42, the mounting portion 52 is fixed to the housing 1 by a screw, and the fixing portion 51 is inserted into the housing 1 to fix the adjusting lever 5; the adjusting rod 5 is matched with the gear shaft 4 to lock the volute spiral spring 3.
When the gear shaft 4 is rotated to adjust the magnitude of the torsion, the elastic stopping portion 53 of the adjusting rod 5 firstly moves downward along the pressure generated by the gear shaft 4 and then rebounds to abut against the concave of the gear 42 of the gear shaft 4, so as to fix the degree of torsion of the volute spiral spring 3, and the adjustment can be carried out according to the size, weight and tightness of the door in practical use.
Specifically, an angle plate 6 is arranged at the position of the shell 1, the angle plate 6 is connected with the shell 1 through a screw bolt, the angle plate 6 is provided with a first wire groove 61, the tail end of the traction rope 23 penetrates through the first wire groove 61, and a stop block 232 is arranged at the tail end of the traction rope 23;
the bobbin 21 is provided with a second wire groove 211, the head end of the traction rope 23 is clamped into the second wire groove 211 and then wound around the bobbin 21, and the head end of the traction rope 23 is further provided with a clamping block 233.
Furthermore, the tail end of the pulling rope 23 is inserted into the angle plate 6 through the first wire groove 61, the head end of the pulling rope 23 is inserted into the wire barrel 21 through the second wire groove 211, and the head end of the pulling rope 23 is provided with the fixture block 233 to help to fix the pulling rope 23, so that the tail end of the pulling rope 23 is provided with the stopper 232 to help to play a role in buffering, and the door body is prevented from being damaged by collision.
The first wire groove 61 in this embodiment is a Z-shaped wire groove, the height of the first transverse groove 611 of the first wire groove 61 is greater than the height of the second transverse groove 612 of the first wire groove 61, and a baffle is arranged above the second transverse groove 612, the baffle abuts against the first transverse groove 611, so that the tail end of the traction rope 23 is prevented from being separated from the first wire groove 61, and the stability of the door closer is guaranteed.
The stop block 232 comprises a stop plate 2321 and a fixed block 2322, the end of the traction rope 23 is provided with a rope loop 231, the rope loop 231 sequentially penetrates through the stop plate 2321 and the fixed block 2322, the stop plate 2321 can effectively prevent the rope loop 231 of the traction rope 23 from passing through the first linear slot 61 due to the output of torque when the door is closed, and simultaneously, the buffer function is also achieved, so that the door body is prevented from being damaged; the length of the fixing block 2322 is greater than that of the stop plate 2321, which is beneficial to fixing the rope loop 231.
The hauling rope 23 in the embodiment is a steel wire rope, has high tensile strength, fatigue resistance and impact toughness, is good in flexibility, is suitable for various purposes such as hauling and pulling, and the like, and achieves the effect of reducing noise due to the fact that the hauling rope 23 stretches and retracts repeatedly without friction resistance.
Furthermore, the height of the stop plate 2321 of the stop block 232 is greater than the height of the first wire groove 61, and the height of the latch 233 is greater than the height of the second wire groove 211.
The height of the stop plate 2321 of the stop block 232 is greater than the height of the first wire groove 61, so that the stop function of the stop plate 2321 can be realized; the height of the fixture block 233 is greater than that of the second wire groove 211, so that the head end of the traction rope 23 can be fixed.
Specifically, the scroll spring 3 is a contact type scroll spring.
The utility model discloses a be the steady contact volute spiral spring of output moment of torsion, whether tighten up or relax and all can not appear off-centre, can guarantee that the door closer is stable at operation in-process moment of torsion output to it is stable to realize the functioning speed.
The utility model also provides a floating gate automatic control system, include:
the track is provided with a rack;
the buffer piece is arranged at the tail end of the track close to the tail end;
the anti-collision positioning piece is arranged at the tail end of the track;
the connecting pieces are symmetrically arranged at the top of the door body at intervals and are provided with
A controller in meshed connection with the track, an
A detent slidably connected to the track, an
The door closer is arranged at the head end of the track and is detachably connected with the stopping device.
The utility model provides a door closer is applicable to unilateral floating gate, bilateral floating gate and other linear reciprocating motion cushioned places, such as subway shield door, factory, etc. in this embodiment, the door closer is used for unilateral floating gate, the door closer is installed at one end of the said orbit, the said door closer is connected with the said door body, draw the door body to close automatically when closing the door; the rack can be arranged on the upper part or the lower part of the track, and is not limited herein; the buffer parts are arranged at the positions, close to the tail ends, of the tracks, so that the impact force generated when the door body is closed is effectively reduced, and the damage generated by collision when the door body is closed is reduced to a certain extent; the anti-collision positioning piece is arranged at the tail end of the track and is of a door stopper structure, so that impact force generated when the door body is closed is further reduced, damage caused by collision when the door body is closed is avoided, the door body can be prevented from rebounding by utilizing the adsorption characteristic of the door stopper structure, and the positioning of the door body is realized; the door body is connected with the track through the connecting piece, two connecting pieces are arranged at the top of the door body at intervals, a controller and a stopping device are installed on one connecting piece, a gear 42 is arranged on the controller, the gear 42 is in meshed connection with the track, the controller drives the gear 42 to rotate, the door body is connected with the track through the meshed connection of the gear 42 to realize opening and closing, and the stopping device is in sliding connection with the track and slides leftwards or rightwards along with the driving of the controller; and the other connecting piece is provided with a stopping device, and the stopping device reduces the impact force of the door body through sliding collision with the buffer piece.
The utility model provides a pair of floating gate automatic control system realizes opening and closing of a body by controller control, realizes the steady stability and the low noise that a body removed by the door closer.
Specifically, a traction pin and a stop pin are arranged on the stop device, a traction rope 23 is sleeved on the traction pin, and the stop pin is in meshed connection with the track.
The rope sleeve 231 of the traction rope 23 is sleeved on the traction tip, when the door body is opened, the traction rope 23 extends outwards along with the traction tip, the volute spiral spring 3 is tightened and stores force, when the door body is closed, the volute spiral spring 3 releases capacity, the traction rope 23 pulls the door body to approach the door closer, and the automatic closing of the door body is realized.
To sum up, the utility model discloses technical scheme provides a door closer and floating gate automatic control system thereof, include: a housing; the bobbin assembly is arranged on the shell, and a traction rope is wound on the bobbin assembly; the scroll spring is arranged in the bobbin assembly, one end of the scroll spring is fixed on the gear shaft, and the other end of the scroll spring is fixed on the shell; the adjusting rod is arranged on the outer side of the shell, one end of the adjusting rod is connected to the shell, and the other end of the adjusting rod abuts against the tooth grooves of the gear shaft; the utility model discloses an one of the purpose is through the cooperation of spool subassembly structure and haulage rope realization reduction noise of operation, and the second of the purpose is through setting up the effect of adjusting pole and gear shaft cooperation in order to realize adjusting volute spiral spring's elasticity and fixed in order to reach the size of adjusting spring force to adapt to the door of equidimension not, light and heavy, elasticity.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (10)
1. A door closer, comprising:
a housing;
the bobbin assembly is arranged on the shell, and a traction rope is wound on the bobbin assembly;
the scroll spring is arranged in the bobbin assembly, one end of the scroll spring is fixed on the gear shaft, and the other end of the scroll spring is fixed on the shell;
the adjusting rod is arranged on the outer side of the shell, one end of the adjusting rod is connected to the shell, and the other end of the adjusting rod abuts against the tooth grooves of the gear shaft.
2. A door closer according to claim 1, wherein the wire drum assembly comprises a wire drum and two drum sleeves, the wire drum assembly is movably connected with the housing through the gear shaft, and a snap spring is further provided to lock the gear shaft.
3. The door closer according to claim 2, wherein a plurality of limiting posts and at least one positioning pin are arranged in the wire barrel assembly, the plurality of limiting posts are arranged at intervals around the inner wall of the barrel sleeve, the positioning pin is arranged between the two limiting posts, an outer end of the volute spiral spring is provided with an outer hook part, and the outer hook part is fixed in the wire barrel assembly through the positioning pin.
4. The door closer of claim 1, wherein the gear shaft includes a rotation shaft and a gear, the rotation shaft being provided with an insertion groove, an inner end of the spiral spring being provided with an inner hook portion, the inner hook portion being inserted into the insertion groove.
5. A door closer according to claim 4, wherein the adjusting lever is provided with a fixing portion, a mounting portion and an elastic stopper portion, the stopper portion abutting against the gear, the mounting portion being fixed to the housing by a screw, the fixing portion being inserted into the housing to fix the adjusting lever; the adjusting rod is matched with the gear shaft to lock the volute spiral spring.
6. The door closer according to claim 2, wherein an angle plate is arranged at the housing, the angle plate is connected with the housing through a bolt, the angle plate is provided with a first slot, the tail end of the traction rope passes through the first slot, and the tail end of the traction rope is provided with a stop block;
the cable drum is provided with a second wire groove, the head end of the traction rope is clamped into the second wire groove and then wound around the cable drum, and a clamping block is further arranged at the head end of the traction rope.
7. The door closer of claim 6, wherein a height of the stopper plate of the stopper is greater than a height of the first wire groove, and a height of the latch is greater than a height of the second wire groove.
8. A door closer according to claim 1, wherein the wrap spring is a contact wrap spring.
9. An automatic control system for a sliding door, comprising:
the track is provided with a rack;
the buffer piece is arranged at the tail end of the track close to the tail end;
the anti-collision positioning piece is arranged at the tail end of the track;
the connecting pieces are symmetrically arranged at the top of the door body at intervals and are provided with
A controller in meshed connection with the track, an
A detent slidably connected to the track, an
A door closer according to any one of claims 1 to 8, mounted at a head end of the track and removably connected to the stop arrangement.
10. The automatic control system of claim 9, wherein said stop device is provided with a pull pin and a stop pin, said pull pin is sleeved with a pull rope, and said stop pin is engaged with said track.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920647714.XU CN210685681U (en) | 2019-05-06 | 2019-05-06 | Door closer and automatic control system of movable door thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920647714.XU CN210685681U (en) | 2019-05-06 | 2019-05-06 | Door closer and automatic control system of movable door thereof |
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| Publication Number | Publication Date |
|---|---|
| CN210685681U true CN210685681U (en) | 2020-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920647714.XU Active CN210685681U (en) | 2019-05-06 | 2019-05-06 | Door closer and automatic control system of movable door thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958360A (en) * | 2019-05-06 | 2019-07-02 | 广州锦宏科技有限公司 | A kind of door closer and its mobile door automatic control system |
-
2019
- 2019-05-06 CN CN201920647714.XU patent/CN210685681U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958360A (en) * | 2019-05-06 | 2019-07-02 | 广州锦宏科技有限公司 | A kind of door closer and its mobile door automatic control system |
| CN109958360B (en) * | 2019-05-06 | 2024-03-19 | 广州锦宏科技有限公司 | Door closer and automatic control system for moving door thereof |
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