CN201460554U

CN201460554U - Vertical built-in floor spring

Info

Publication number: CN201460554U
Application number: CN200920093361XU
Authority: CN
Inventors: 秦源; 张丽霞; 秦中银
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-08
Filing date: 2009-04-08
Publication date: 2010-05-12
Anticipated expiration: 2019-04-08

Abstract

The utility model provides a vertical built-in floor spring which comprises a casing, a cam group and a spring, wherein the cam group is arranged in the casing and composed of a columnar cam and a fixed cam which are engaged, the columnar cam is arranged in the casing to form an axial sliding pair, a restoring spring and a regulating plug are positioned on the top portion of the columnar cam, the fixed cam is arranged on the bottom portion of the casing, the engaging contour line of the columnar cam and the fixed cam of the cam group is a sinusoidal curve, and the engaging surface is a helical curved surface. By adopting a pair of mutually engaging cams to form the sliding frication pair, the engaging contour line is similar to sinusoidal curve, and the engaging surface is helical surface, thereby the structure is simple without numerous accessories, the vertical built-in floor spring is firm and wearable and can not damage the floor, with aesthetic and environment-friendly properties and strong practicability.

Description

Vertical built-in floor spring

Technical field

The utility model is the improvement to existing external horizontal type floor spring structure, relates to having provided a kind of vertical built-in floor spring, belongs to door and window hardware component technology field.

Background technology

The external horizontal type floor spring of Shi Yonging in the market, though can realize closing the door automatically, but its structure more complicated, its installation must have the professional to carry out, and often are subjected to the restriction in space and can't adopt, external horizontal type floor spring is installed more need be dug dell about one 5～8 centimetres, must locate with the electric welding machine welding, cement casting is installed etc. working procedures, bother very much unsuitable rapid construction.

Summary of the invention

The utility model provides a kind of vertical built-in floor spring, and purpose is to solve existing external horizontal type floor spring complexity, shortcomings such as ornamental difference are installed.

The purpose of this utility model is achieved in that and comprises housing, cam set, back-moving spring, cam set is located in the housing, constitute by columnar cam and stationary cam engagement, the columnar cam device constitutes the pair that endwisely slips in housing, the columnar cam top is provided with back-moving spring and adjusts plug, and the stationary cam device is in the bottom of housing;

The meshing wheel profile of the columnar cam of described cam set and stationary cam is a sine curve, and the field of conjugate action is a spiral camber.

Described vertical built-in floor spring is characterized in that: be provided with the cam type positioning disk and cooperate the formation detent mechanism with alignment pin on the axle of stationary cam.

Described vertical built-in floor spring, it is characterized in that: the bottom surface of stationary cam offers locating hole, and the relative position of housing bottom surface is provided with dowel device, constitutes detent mechanism.

Described vertical built-in floor spring is characterized in that: be provided with piston valve body in housing, be positioned at the upper end of columnar cam, have oil duct and one way valve on the piston valve body, constitute the automatic damping device.

Operating principle of the present utility model is, and is earlier that terminal pad is affixed or be bonded in during use, and on doorframe or the ground, the axle head of the columnar cam of a tape spool is inserted in above the terminal pad in the groove, and whole housing is contained in the stile frame of door leaf.Housing rotates along a certain direction with the stile frame under external force, inevitable certain along stationary cam meshing spiral face of movable columnar cam is simultaneously rotated, the columnar cam of promotion activity simultaneously moves axially, compression reseting spring, motion institute work on external force effect and the door leaf, be transformed into the pressure energy of back-moving spring, when door leaf rotates 90 degree positions, columnar cam is in the end face top of stationary cam, under the effect of back-moving spring, be in stable state, door is positioned at open position, as long as door leaf is turned an angle a little along the opposite direction of opening the door, after columnar cam is crossed the end face top, be on the helicoid of end face low side, columnar cam door leaf under the effect that gravity and back-moving spring release energy, because columnar cam can only can not rotate in axially-movable, the active force of back-moving spring is decomposed into along the circumferential direction active force, with door from gravity, make door leaf rotate towards the direction of closing the door automatically, mesh fully until the bottom that is positioned on the helicoid, make door leaf close the door state location, strengthen detent mechanism door is being closed on when closing, the acceleration speed of closing the door can significantly improve the stable wind resistance after door is closed.

Good effect of the present utility model is: adopt a pair of intermeshing cam to constitute sliding friction pair, the engagement place outline line is the near sinusoidal curve, the field of conjugate action is a helicoid, simple in structure, need not many annexes, firm wear-resisting, do not destroy ground, it is practical to integrate environmental protection attractive in appearance, embodies than the unrivaled advance of prior art, has vast market prospect and social benefit.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the structural representation that damping function is arranged of the present utility model;

Fig. 3 is a mounting structure schematic diagram of the present utility model.

1 stationary cam, 2 lower houses, 3 middle shells, 4 housings, 5 are adjusted plug, 6 back-moving springs, 7 rollers, 8 columnar cams, 9 dowel devices, 10 bearings, 11 explosion-proof valves, 12 sealing rings, 13 oil ducts, 14 big oil ducts, 15 one way valves, 16O type circle, 17 little oil ducts, 18 oil sealings, 19 end caps, 20 plunger piston type valve bodies, 21 upper chamber, 22 lower oil chamber, 23 cam type positioning disks

Specific embodiment

As shown in Figure 1, the housing of vertical hiding floor spring comprises: housing 4, middle shell 3 and lower house 2, be provided with stationary cam 1 and columnar cam 8 formation cam set in the housing, columnar cam 8 is sleeved on by roller 7 and constitutes the axial sliding fit pair in the middle shell 3, stationary cam 1 is contained in the lower house 2 by bearing 10, columnar cam 8 constitutes Meshing Pair with stationary cam 1, and columnar cam 8 is a sine curve with the meshing wheel profile of stationary cam 1, and the field of conjugate action is a spiral camber; Being provided with adjustment plug 5 in the housing 4 is connected with columnar cam 8 by back-moving spring 6; On the axle of stationary cam 1, be provided with cam type positioning disk 23, with the detent mechanism of alignment pin 9 device formation stationary cams 1.

As shown in Figure 2, housing 4 lower ends are by end cap 19, sealing ring 12, oil sealing 18 sealings, and the upper end of housing 4 is by adjusting the grease chamber of the sealing of O type circle 16 sealings formation beyond the Great Wall, and this inside, grease chamber is filled damping oil.Be equipped with plunger piston type valve body 20 in the grease chamber, the grease chamber is divided into upper chamber 21 and lower oil chamber 22, plunger piston type valve body 20 is provided with big oil duct 14 and little oil duct 17 is communicated with upper chamber 21 with oil duct 13 and lower oil chamber 22, be provided with one way valve 15 (this example is ball valve) at big oil duct 14 and little oil duct 17 intersections, breakdown action according to door, when columnar cam 8 is moved upward, one way valve 15 moves up and opens big oil duct 14, make the resistance minimum of opening the door, at closing time when movable cam 8 is mobile downwards, one way valve 15 (this example is a ball valve) moves down opens little oil duct 17, and the resistance of closing the door is increased, and it is steadily soft to close the door; Housing end plug 19 is provided with gases at high pressure and discharges explosion-proof valve 11, prevents the high temperature blast.

As shown in Figure 3, the bottom surface of stationary cam 1 offers locating hole, and the relative position of housing 4 bottom surfaces is provided with dowel device 9, constitutes detent mechanism.

Claims

1. vertical built-in floor spring, it is characterized in that: comprise housing, cam set, back-moving spring, cam set is located in the housing, constitute by columnar cam and stationary cam engagement, the columnar cam device constitutes the pair that endwisely slips in housing, the columnar cam top is provided with back-moving spring and adjusts plug, and the stationary cam device is in the bottom of housing;

2. the described vertical built-in floor spring of claim 1 is characterized in that: be provided with the cam type positioning disk and cooperate the formation detent mechanism with alignment pin on the axle of stationary cam.

3. the described vertical built-in floor spring of claim 1, it is characterized in that: the bottom surface of stationary cam offers locating hole, and the relative position of housing bottom surface is provided with dowel device, constitutes detent mechanism.

4. the described vertical built-in floor spring of claim 1 is characterized in that: be provided with piston valve body in housing, be positioned at the upper end of columnar cam, have oil duct and one way valve on the piston valve body, constitute the automatic damping device.