CN206016524U

CN206016524U - Floor spring

Info

Publication number: CN206016524U
Application number: CN201621053493.6U
Authority: CN
Inventors: 许文财
Original assignee: Foshan City Aoda Hardware Product Co Ltd
Current assignee: Foshan City Aoda Hardware Product Co Ltd
Priority date: 2016-09-13
Filing date: 2016-09-13
Publication date: 2017-03-15
Anticipated expiration: 2026-09-13

Abstract

The utility model discloses a kind of floor spring, including housing, piston, connecting rod, spring, cam, roller and supporting plate, piston, connecting rod, spring, cam, roller and supporting plate are in housing, the two ends of connecting rod are separately fixed on piston and supporting plate, spring is set on the outside of connecting rod, cam is on supporting plate, cam rotation drives supporting plate movement, cam is engaged with roller, door rotational band moving cam is rotated, when door opening angle is from the range of 0～65 °, cam is gradually increased with the curvature at roller contact point.During due to door opening angle from the range of 0～65 °, cam is gradually increased with the curvature at roller contact point, hence in so that when door is opened within this range, the resistance being subject to during cam rotation increases, and when door is unlocked under the effect of even power, the resistance being subject to increases, and then the opening speed of door is slowed down, play a part of enabling time delay, prevent an opening speed too fast and door collides with object is interfered, improve security performance.

Description

Floor spring

Technical field

The utility model belongs to a kind of door closer-holder, more particularly, to a kind of floor spring.

Background technology

When using, door rotates the cam rotation driven in floor spring to floor spring, and floor spring opposite house carries out load-bearing, and door can be with Rotate on floor spring, realize opening the door and closing the door.But existing floor spring typically only has door to open 90 ° or 360 ° arbitrarily angled to open Open two kinds；When door is opened to 90 °, door is easily swung when the external forces such as extraneous large wind are subject to, and door easily goes out Now damage, affect service life.

Utility model content

The purpose of this utility model is to provide a kind of floor spring, can solve the problem that at least one of the problems referred to above.

According to one side of the present utility model, there is provided a kind of floor spring, including housing, piston, connecting rod, cam, rolling Wheel and supporting plate, in housing, the two ends of connecting rod are separately fixed at piston and supporting plate for piston, connecting rod, cam, roller and supporting plate On, on supporting plate, cam rotation drives supporting plate movement, cam to be engaged with roller to cam, when door opening angle is 150 ° When cam top abut against with roller.

The beneficial effects of the utility model are：When door opening angle is 150 °, the top of cam is abutted against with roller, because This, the opening angle that door can be limited by the cam so that effect when door is opened into 150 ° by cam with roller is limited Cam is further rotated；Meanwhile, door can be opened into 150 °, and when wind-force or other active forces larger, wind is led to by the both sides of door Cross realization and unload power, effectively prevent a swing, improve the security performance of door, improve the service life of door.

In some embodiments, roller is two, and cam is provided with two the first grooves, and is located at cam centre line respectively Both sides, the first groove is provided with projection, and raised is two, when door opening angle is 0 °, two projections and two roller phases Corresponding.Thus, the first groove is provided with, and when door can be caused to close, in more stable state, the first groove realizes determining for cam Position effect.

In some embodiments, the side of cam is provided with the second groove, when door opening angle be 90 ° when the second groove with One of roller is engaged.Thus, the second groove is provided with, when door can be caused to be opened into 90 °, in more stable state, Second groove realizes the locating effect of cam.

In some embodiments, the cross section of cam is symmetrical with regard to its center line.Thus, door is facilitated to drive when rotating Cam rotation.

In some embodiments, floor spring also includes asphalt channel, and piston is respectively provided on two sides with the first oil pocket and Two oil pockets, the first oil pocket and the second oil pocket are connected by asphalt channel.Thus, asphalt channel is provided with, further can be controlled The speed that door is opened and closed, improves the security performance of door.

Description of the drawings

Fig. 1 is structural representation of the floor spring of the present utility model when door opens 150 °；

Fig. 2 is structural representation of the floor spring of the present utility model when door opens 90 °；

Fig. 3 is floor spring of the present utility model structural representation when the door closes；

Fig. 4 is the structural representation of floor spring cam of the present utility model.

Specific embodiment

Below in conjunction with the accompanying drawings the utility model is described in further detail.

Referring to figs. 1 to Fig. 4：Floor spring, including housing 1, piston 2, connecting rod 3, cam 4, roller 5 and supporting plate 6, piston 2, company Bar 3, cam 4, roller 5 and supporting plate 6 are in housing 1.The two ends of connecting rod 3 are separately fixed on piston 2 and supporting plate 6, connecting rod 3 One end be bolted on supporting plate 6, the other end is fastened on piston 2；On supporting plate 6, cam 4 is rotated cam 4 Supporting plate 6 is driven to move, cam 4 is engaged with roller 5, and the top 43 of cam 4 is offseted with roller 5 when door opening angle is 150 ° Connect.Thus, when door is opened into 150 °, cam 4 is carried out by the top 43 of cam 4 spacing, prevents cam 4 from occurring further Rotation so that door can be fixed on 150 ° of angle positions, so as to when wind-force is larger, wind can be very good two by door Realize unloading power in side, it is therefore prevented that door swings, so as to improve the security performance for using.

When using, the rotary shaft of door is arranged on cam 4 floor spring of the present utility model, when external force drives door dynamic, door Rotary shaft band moving cam 4 rotate, cam 4 rotate when act on supporting plate 6, cam 4 promote supporting plate 6 along housing 1 axial direction Move in direction.

Roller 5 is two, and cam 4 is provided with two the first grooves 41, and is located at the both sides of 4 center line of cam respectively, first It is two to be provided with raised 411, raised 411 at groove 41, when door opening angle is 0 °, two projections 411 and two 5 phases of roller Corresponding.When door is closed, the first groove 41 is engaged with roller 5, and raised 411 are located at the side of the first groove 41, Prevent cam 4 from rotating under the active forces such as wind-force, so as to prevent door from lower swing is acted in extraneous wind-force, improve the peace of door Full performance.

The side of cam 4 is provided with the second groove 42, the second groove 42 and one of roller when door opening angle is 90 ° 5 are engaged.Thus, the restriction for cam 4 being rotated by the second groove 42, stops at can door and open 90 ° of angles On position, practicality is improve.

The cross section of cam 4 is symmetrical with regard to its center line.

Floor spring of the present utility model also includes asphalt channel 7, and piston 2 is respectively provided on two sides with the first oil pocket 8 and second Oil pocket 9, the first oil pocket 8 are connected by asphalt channel 7 with the second oil pocket 9.When the door is open, 4 drivening rod 3 of cam is moved, Connecting rod 3 promotes piston 2 to 9 place side shifting of the second oil pocket, so that the hydraulic oil in the second oil pocket 9 passes through asphalt channel 7 Flow into the first oil pocket 8；Conversely, when door is closed, the hydraulic oil in the first oil pocket 8 flows to the second oil pocket 9.By the first oil pocket 8 and second hydraulic oil in oil pocket 9 flowing, the stationarity of door opening and closing can be improved, so as to improve the security performance of door.

Above-described is only preferred embodiment of the present utility model, it is noted that for the ordinary skill of this area For personnel, on the premise of design being created without departing from the utility model, can also make some deformations and improvement, these all belong to In protection domain of the present utility model.

Claims

1. floor spring, it is characterised in that including housing (1), piston (2), connecting rod (3), cam (4), roller (5) and supporting plate (6), Piston (2), connecting rod (3), cam (4), roller (5) and supporting plate (6) are interior located at housing (1), the two ends of connecting rod (3) It is separately fixed on piston (2) and supporting plate (6), described cam (4), on supporting plate (6), described cam (4) rotate and drive support Plate (6) is mobile, and cam (4) are engaged with roller (5), when door opening angle is 150 ° the top of cam (4) and Roller (5) is abutted against.

2. floor spring according to claim 1, it is characterised in that described roller (5) are two, and cam (4) are provided with Two the first grooves (41), and it is located at the both sides of cam (4) center line respectively, the first groove (41) place is provided with projection (411), the projection (411) is two, when door opening angle is 0 °, two projections (411) and two roller (5) phases Corresponding.

3. floor spring according to claim 2, it is characterised in that the side of cam (4) is provided with the second groove (42), Second groove (42) described in when door opening angle is 90 ° is engaged with one of roller (5).

4. the floor spring according to any one of claims 1 to 3, it is characterised in that the cross section of cam (4) is with regard to which Center line is symmetrical.

5. the floor spring according to any one of claims 1 to 3, it is characterised in that also include asphalt channel (7), the work That fills in (2) is respectively provided on two sides with the first oil pocket (8) and the second oil pocket (9), and the first oil pocket (8) and the second oil pocket (9) pass through Asphalt channel (7) is connected.