CN2397236Y

CN2397236Y - Improved closer for door

Info

Publication number: CN2397236Y
Application number: CN 99254260
Authority: CN
Inventors: 陈纱娜
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-11-19
Filing date: 1999-11-19
Publication date: 2000-09-20
Anticipated expiration: 2009-11-19

Abstract

The utility model provides an improved closing device for doors, which comprises a base for fixing a door plate and a connection rod group; one end of the connection rod group is connected with a rotary shaft of the base, and the other end is pivoted at a door frame; the rotary shaft is convexly provided with an eccentric cam in the base in which a slide component butted with the cam is arranged; the slide component is butted by an elastic component arranged in the base; by means of the combination of the components, when external force pushes the door plate, the eccentric cam is rotated and pushes the slide component which presses the elastic component; when the external force is released, the elastic component returns to the original state so that the eccentric cam is acted by push force to rotate; thus, the door plate is closed.

Description

The door closer of improvement

The utility model is relevant with closing device, and detailed is a kind of door closer of improvement.

Press, the door closer of commonly using roughly is divided into two kinds, one is to be installed in the door closer that has bar linkage structure between door-plate and doorframe, it two directly is overlapped in the axis of rotation of door closer and is placed in underground door closer for the rotating shaft of door-plate, commonly use the door closer such as No. the 169664th, the notification number " hydraulic pressure door closer " and No. 273258 " door check structure-improved " that are installed between door-plate and doorframe, both structures all are the utilization gears, the purpose of closing the door is reached in the collocation of tooth bar and spring, above-mentioned both utilization oil piping systems are adjusted the speed of door closer running, though both are meticulous structure design, but wheel and rack has the existence of backlash (backlash) when cooperating, during design improperly backlash (backlash) size will ring the whether smooth and easy of rack and pinion when running, in other words, rack and pinion will be intermittent contact running, and the shortcoming that has running to have some setbacks.

Main order of the present utility model is that a kind of door closer of improvement is being provided, and it need not consider the existence of backlash, and its structure can make the action of opening the door with at closing time more smooth and easy.

Edge is, takes off purpose on reaching, and the utility model provides a kind of door closer of improvement, be to include a pedestal that is fixed in door-plate, its major axis provides a duct sidelong, and minor axis is to then being provided with a through hole that runs through this duct, and the two ends in this duct set firmly a cover plate respectively to seal it; One sliding part slidably is located in this duct, and its two ends are to be round bar shape, and interlude is pivoted with a roller and one and this pedestal major axis guide groove in the same way; One elastic component is located in this duct, and the one end is to be connected to this cover plate under free state, and end then is connected to this sliding part in addition, must be subjected to the slippage of this sliding part and is compressive state; One rotating shaft provides in the guide groove of this sliding part and is hubbed in this through hole, and this rotating shaft middle part more convexes with an eccentric cam that connects with this roller; And a connection rod set, the one end is the rotating shaft that is connected in this pedestal, end then is hubbed at the doorframe upper limb in addition; Combination by above-mentioned member, when external force pushes the door open, make this eccentric cam rotation and push this sliding part to produce the state that this elastic component is compression, and when external force discharges, the thrust that is discharged of this elastic component reinstatement pushes this sliding part of mat this eccentric cam and makes this eccentric cam rotation, and then door-plate cuts out.

Wherein the major axis of this sliding part generally is ㄩ shape to section, and the bar footpath size of its two ends round bar is to equate with this duct.

Wherein this eccentric cam generally is heart type, its outer rim has one first contact end and one second contact end respectively with respect to the two ends on this rotating shaft maximum radial length direction, and the distance of this first contact end and this rotating shaft core is the distance greater than this second contact end and this rotating shaft core.

Wherein this elastic component is to be a spring.

Below lift a preferred embodiment now and cooperate graphic explanation as after so that make the expensive committee member of investigating further understanding and approval be arranged, wherein to the utility model:

Fig. 1 is the stereogram of the utility model one preferred embodiment.

Fig. 2 is the utility model one preferred embodiment sectional view on the 2-2 direction in Fig. 1, is to show that this pedestal is in state at closing time.

Fig. 3 is the utility model one preferred embodiment sectional view on the 3-3 direction in Fig. 1, is to show that this pedestal is in door-plate state at closing time.

Fig. 4 is the state of pedestal when door-plate opens the door of the utility model one preferred embodiment.

See also Figure 1 and Figure 2, door closer one preferred embodiment of the utility model improvement is to comprise a pedestal 20, one sliding parts 30, one elastic components 40, one rotating shafts 50, one connection rod set 60 shown in figure number 10.

This pedestal 20 is that a cuboid is fixedly arranged on door-plate 100 upper limbs, its major axis has provided a duct 21 sidelong, the both sides in this duct 21 are respectively equipped with a negative thread 21a, establish a jam plate 22 in order to spiral shell respectively, so that the two ends in this duct 21 are airtight state, side on these pedestal 20 short-axis directions in this duct 21 is provided with a corresponding perforation 24 and a hole slot 25, this perforation 24 is to be concentric with this hole slot 25, this perforation 24 is provided with a negative thread 24a, establish a cover plate 26 in order to spiral shell, the central authorities of this cover plate 26 provide a through hole 27, this pedestal 20 is provided with hydraulic oil and inserts hole 28 and be communicated with this duct 21 in these perforation 24 places of this vicinity, and spiral shell is established a bolt 29 and inserted hole 28 to seal this hydraulic oil.

This sliding part 30 slidably is located in this duct 21, it has the pars intermedia 32 of a section semicircular in shape and is connected with two round bar ends 34 in these pars intermedia 32 two ends respectively, the bar footpath size of this round bar end 34 is the pore sizes that are equal to this duct 21, side on this pars intermedia 32 be provided with one with these pedestal 20 long axis directions guide groove 36 in the same way, opposite side then is provided with a perforation 37, one latches 38 and wears pivot one roller 39 and be hubbed at this perforation 37.

This elastic component 40 is to be a spring in the present embodiment, and this elastic component 40 one end under drift is to be resisted against this jam plate 22, and end then is resisted against a round bar end 34 of this sliding part 30 in addition.

This rotating shaft 50 has the first axle part 52 and the second axle part 54, the section place that is connected with this first axle part 52 on this second axle part 54 convexes with the eccentric cam 56 that without exception is heart type, more be convexly equipped with a stop ring 57 with these the second axle part 54 junctions on this first axle part 52, this the first axle part 52 is to wear the through hole 27 of pivot in this cover plate 26, and the stop ring 57 of this first axle part 52 of mat is unlikely this rotating shaft 50 to move axially, the free end of this first axle part 52 is to protrude from this pedestal 20, this the second axle part 54 is placed through in the guide groove 36 of this sliding part 30, its diameter of axle size is the width size that is equal to this guide groove 36, it is not held and then is hubbed in this hole slot 25, it has one first contact end 56a and one second contact end 56b respectively because of the two ends on the maximum radial length direction outward this eccentric cam 56, the distance in this first contact end 56a and this rotating shaft 50 axle center is the distances greater than this second top bottom and this rotating shaft 50 axle center, the periphery of this first contact end 56a more forms a protuberance 56c, the periphery of this second contact end 56b forms a recess 56d, when the recess 56d of this eccentric cam 56 and this roller 38 connect, this elastic component 40 is to be under the state of drift, and this rotating shaft of mat 50 is rotated and this elastic component 40 is changed according to the profile curvature of this eccentric cam 56 and is suffered oppression, and connected 38 o'clock in this first contact end 56a and this roller, 38 of this elastic components are in maximum confined state.

This connection rod set 60 has a principal arm 62 and one and the spiral arm 64 that articulates of this principal arm, and an end of this principal arm 62 is to be socketed on this rotating shaft 50, and an end of this spiral arm 64 is to be articulated in doorframe 200 upper limbs.

Composition by above-mentioned member, the door closer 10 of the utility model improvement is under the state of closing the door in door-plate 100, this elastic component 40 is not compressed, the recess 56d of this eccentric cam 56 just and this roller 38 connect (seeing also Fig. 3), when door-plate because of outside try hard to recommend when opening this connection rod set 60 with this rotating shaft 50 of related driving, profile by this eccentric cam 56, this elastic component 40 will be compressed (seeing also Fig. 4), and when external force is released, this elastic component 40 will have the situation of reinstatement, and then push-jump this eccentric cam 56 is to reach the purpose of closing door-plate;

In the action of closing the door and opening the door, more the roller 38 because of this sliding part 30 keeps in touch with this eccentric cam 56 at any time, can be smoothly smooth and easy when putting its action, change the wheel and rack structure of commonly using door closer, because of the existence of backlash gear when the start produces the shortcoming that action has some setbacks with intermittent contact of bar; Two round bar ends 34 of this sliding part 30 place this rotating shaft 50 both sides respectively again, divide to push away the frictional force of this sliding part 30 when 21 slippages of this duct, and then make this door closer 10 more smooth and easy when start.

Claims

1. the door closer of an improvement is characterized in that, is to include:

One pedestal, its major axis provides a duct sidelong, and minor axis is to then being provided with a through hole that runs through this duct, and the two ends in this duct are to set firmly a cover plate respectively;

One sliding part slidably is located in this duct, and its two ends are to be round bar shape, and interlude is pivoted with a roller and one and this pedestal major axis guide groove in the same way;

One elastic component is to be located in this duct, and an end is to be connected to this cover plate, and end then is connected to this sliding part in addition;

One rotating shaft provides in the secondary guide groove of this slip and is hubbed in this through hole, and this rotating shaft middle part more convexes with an eccentric cam that connects with this roller; And

One connection rod set, one end are the rotating shafts that is connected in this pedestal, and end then is hubbed at the doorframe upper limb in addition.

2. according to the door closer of the described improvement of claim 1, it is characterized in that wherein the major axis of this sliding part generally is ㄩ shape to section, the bar footpath size of its two ends round bar is to equate with this duct.

3. according to the door closer of the described improvement of claim 1, it is characterized in that, wherein this eccentric cam generally is heart type, its outer rim has one first contact end and one second contact end respectively with respect to the two ends on this rotating shaft maximum radial length direction, and the distance of this first contact end and this rotating shaft core is the distance greater than this second contact end and this rotating shaft core.

4. according to the door closer of the described improvement of claim 1, it is characterized in that wherein this elastic component is to be a spring.