Damper structure for blind

Abstract

The present invention relates to a damper structure for a blind, which prevents a spring inserted into a rotation pipe from pushing up a connection pipe while constantly maintaining the viscosity of brake oil, thereby enabling vertical operation of a screen to be performed stably for a long period of time.

Description

Damper structure for blinds

[0001] The present invention relates to a damper structure for a blind, and more specifically, to block the phenomenon where a spring is pushed forward and pushes up a connecting pipe, while maintaining a constant uniformity of viscosity even when brake oil is used repeatedly, thereby ensuring stable operation for a long period without causing minute differences in the up-and-down operation of the screen.

[0002] Generally, roller blinds are used as a substitute for curtains in offices, homes, or restaurants. They consist of a screen made of fabric or synthetic resin; when a ball chain on a sprocket installed on one side of a bracket is pulled in one direction, the screen releases from a rotating tube due to the elastic force of a spring and descends, fixing it in a fixed position to block light entering through windows.

[0003] As shown in the attached drawing Fig. 1, a roll screen blind (10) has a rotating member (5) and a deceleration member (8) installed on both brackets (9) and a winding tube on which a screen is wound is connected to the outer surface.

[0004] The above-mentioned rotating member (5) has a connecting shaft (3) with a rotating member (2) formed in front of the rotating body (1), and a spring (4) is connected to the outer surface of the connecting shaft (3), and both ends of the spring (4) are fixed to one side of the rotating body (1) and the rotating member (2), so that the rotating member (2) moves the connecting shaft (3) left and right by the elasticity of the spring (4).

[0005] The above reduction member (8) installs a reduction gear (6) in front of a rotating body (1) having an adjuster and connects a fixed shaft (7) having a reduction nut (7a) in front of it.

[0006] Then, a rotating tube with a screen wound around it is attached to the outer surface of both rotating bodies (1) above, and a bracket (9) is fixedly installed on the window frame and glass wall frame using screws, etc.

[0007] To operate the screen of such a roll screen blind upwards and downwards, pulling one end of the ball chain installed on the sprocket lowers the screen to block light, while pulling the other end raises the screen to open it.

[0008] As such, conventional roller screen blinds consist of two interconnected ball chains rather than a single line, making it inconvenient to operate the screen up and down. Additionally, there was a problem where children mistook the long ball chains for toys, wrapped them around their necks, and jumped from high places, resulting in fatal accidents.

[0009] To solve the aforementioned problems, my previously registered patent No. 10-1299925, 'Improved One-Code Blind,' has been registered.

[0010] As shown in the attached drawing Fig. 2, the configuration of the above-described improved one-cord blind comprises: a fixed body (210) having a rotating plate (212) formed to protrude outwardly with a connecting projection (212) having a locking projection (213) formed thereon; a stopper (220) that is connected to the locking projection of the fixed body (210), has a connecting member (221) formed at the front, and a fixing plate (223) formed at the rear; a rotating member (230) having a connecting groove (231) formed inside the front and a connecting member (234) formed at the rear that is symmetrical to each other and has a protruding ledge (232) formed at the top; a spring (240) connected to the outer surface of the connecting member (221) of the stopper (220); a protective tube (250) having a hole (251) formed on the front, a fixing ledge (252) formed on the inner front to which the spring (240) is connected, and a plurality of connecting pins (253) formed on the outer surface of the rear end; and the It is composed of a rotating tube (260) having a plurality of protrusions (261) formed on the outer surface of the protective tube (250) and connected to the coupling groove (231) of the rotating ball (230) on the inner front, and a washer (270) connected to the washer groove (214) of the fixed shaft (215).

[0011] As seen in the above, springs are used in various forms to operate the screen up and down of the blind.

[0012] However, there was a problem where, when the blind was used for a long period, the spring did not return to its original position and moved forward, affecting the operation of the reduction gear.

[0013] In addition, there was a problem where the brake oil filled inside the reduction gear housing failed to maintain uniform viscosity when the blind was used repeatedly over a long period, causing minor errors in the up-and-down operation of the screen.

[0014] The present invention was developed to solve the above-mentioned problems, and its purpose is to provide a damper structure for a blind that prevents the spring from being pushed out of the rotating tube even after the blind has been used for a long time, while simultaneously maintaining a constant viscosity of the brake oil to ensure stable operation of the blind.

[0015] The present invention comprises a reduction gear consisting of a housing filled with oil and having an opening on the front, a reduction body inserted into the housing and having a plurality of stirring blades formed on its outer surface, having an oil passage inside and a coupling projection on its rear surface, a gasket in close contact with the front surface of the reduction body inserted into the housing, and a fixing cap sealing the opening of the housing; a connector that is fastened to the coupling projection of the reduction body, having a fastening projection with an insertion groove formed on one side and a coupling projection having a spring catch groove formed on the other side; a spring having a catch projection formed at one end; a fixing cover having a fixing plate formed symmetrically with a catch hole formed on its lower outer surface, a fixing groove formed on its upper inner surface, and an insertion hole provided on its upper surface; and a rotating tube having a fastening groove formed symmetrically with a catch projection formed in the center on its upper outer surface, and an insertion space provided on its upper surface into which an upwardly protruding fixing projection and a spring are inserted. The invention is characterized by inserting a spring having a locking projection (361) formed in the insertion space of the rotating tube, connecting the locking hole of the fixing cover to the locking projection of the rotating tube, connecting the spring locking groove of the connector to the locking projection of the spring, and then connecting the outer case to fix it.

[0016] The present invention has the effect of enabling stable use of the blind for a long period of time by preventing the phenomenon in which a spring inserted into the rotating tube pushes up the connecting tube, thereby preventing minute differences in the vertical operation of the screen.

[0017] In addition, the present invention has the effect of improving the stability of blind operation because the reduction gear connected to the connector maintains the viscosity density of the brake oil at all times as it rotates.

[0018] FIGS. 1 and 2 are drawings showing the configuration of a conventional roller blind.

[0019] FIG. 3 is a perspective view showing the overall configuration of the present invention.

[0020] FIG. 4 is a cross-sectional view showing the configuration of the present invention.

[0021] FIGS. 5 and 6 are perspective views showing different configurations of the stirring blades of the reduction gear of the present invention.

[0022] FIGS. 7 and 8 are exploded perspective views showing the configuration of the fixed cover and the rotating tube of the present invention.

[0023] FIG. 9 is an exploded perspective view showing the spring coupling state of the present invention.

[0024] FIG. 10 is a drawing showing the installation and usage state of the present invention.

[0025] The specific details for a preferred embodiment of the present invention will be explained in detail below with reference to the attached drawings, FIGS. 3 to 9.

[0026] The present invention provides a damper structure for a blind that maintains the viscosity of the brake oil at a constant level and blocks the phenomenon where a spring inserted into the rotating tube pushes up the connecting tube, thereby ensuring that the up-and-down operation of the screen is performed stably for a long period of time.

[0027]

[0028] The above-described structure of the damper (300) for the blind is composed of a housing (310), a reduction gear (340) consisting of a reduction body (320), a gasket (335), and a fixing cap (330), a connector (350), a spring (360), a fixing cover (370), and a rotating tube (380), and is characterized by inserting the spring (360) into the insertion space (384) of the rotating tube (380), connecting the locking hole (371) of the fixing cover (370) to the locking projection (381) of the rotating tube (380), connecting the spring locking groove (353) of the connector (350) to the locking projection (361) of the spring (360), and then connecting the outer case (390) to fix it.

[0029]

[0030] The above reduction gear (340) is composed of a housing (310), a reduction body (320), a gasket (335), and a fixing cap (330).

[0031] The housing (310) is a cylindrical body that is filled with a certain amount of brake oil (312) inside, has an opening (311) on the front, and has symmetrical protrusions (313) on the outer surface. An outer case (390) is attached to the protrusions (313) of the housing (310).

[0032] The above-mentioned reduction member (320) is inserted into the brake oil (312) of the housing (310), and has upwardly protruding stirring blades (321) formed symmetrically on its outer surface, an oil passage (322) through which the brake oil (312) passes is formed in the center of the interior, and a square-shaped coupling projection (323) protruding outward is formed on the rear surface.

[0033] The above stirring blades (321) can be formed and used in two or more places.

[0034] The stirring blade (321) serves to uniformly increase the density of the brake oil (312) while rotating, and as shown in the attached drawing Fig. 5, a passage groove through which the brake oil (312) passes is formed narrowly at the center (321a) on one side of the stirring blade (321) and narrowly at both sides (321b) on the other side.

[0035] In addition, as shown in the attached drawing Fig. 6, four stirring blades can be formed, and stirring blades with through grooves formed in the center (321a) and both sides (321b) can be formed to intersect each other.

[0036] As a result, the brake oil (312) does not flow to one side but flows along the narrow passage groove in the center (321a), then spreads out to both sides and passes through the narrow passage grooves on both sides (321b), maintaining an S-shaped flow and rotating in a circular motion.

[0037] Accordingly, the brake oil (312) continuously repeats an S-shaped flow, so it can maintain a uniform viscosity and always a constant viscosity.

[0038] After inserting the reduction gear (320) into the brake oil (312) of the housing (310), a gasket (335) with an insertion hole (336) formed in the center and a fixing cap (330) with an insertion hole (331) formed in the center are inserted in sequence.

[0039] The front surface of the gasket (335) is closely coupled to the deceleration body (320), and the fixing cap (330) is fixed by laser welding.

[0040] At this time, the connecting projection (323) of the deceleration body (320) is exposed to the outside.

[0041] The above connector (350) forms a fastening projection (352) with an insertion groove (351) formed on one side of a cylindrical body, and a coupling projection (354) having a spring catch groove (353) formed on the other side.

[0042] The insertion groove (351) is formed as a square and polygonal groove to facilitate the insertion of the coupling projection (323) of the reduction body (320), and the spacing of the spring catch groove (354) is formed to be equal to the thickness of the spring.

[0043] The above spring (360) forms a stopper (361) that is bent into a straight shape at one end.

[0044] As shown in the attached drawings Figs. 7 and 8, the fixed cover (370) and the rotating tube (380) are configured such that the fixed cover (370) has a hanging hole (371) formed on the lower outer circumference of the circular exterior, and a square-shaped fixed plate (372) protruding downward is formed symmetrically with respect to each other.

[0045] Then, a fixing groove (373) is formed on the inner upper surface, and a circular insertion hole (374) is formed on the upper surface.

[0046] The above-mentioned rotating tube (380) has square-shaped fastening grooves (382) formed symmetrically on the upper outer surface and a locking projection (381) protruding outwardly formed in the center thereof.

[0047] A fixing projection (383) protruding upward is formed on the upper surface of the rotating tube (380), and an insertion space (384) is formed so that a spring (360) having a locking projection (361) is inserted.

[0048] Additionally, a coupling groove (385) is formed in the center of the rear of the rotating tube (380) into which the coupling projection (411) of the bracket (410) is inserted.

[0049] When the square fixing plate (372) of the above-mentioned fixing cover (370) is inserted into the fastening groove (382) of the rotating tube (380) and then pushed, the locking hole (371) of the fixing plate (372) is inserted into the fixing projection (381) of the fastening groove (382), and the fixing cover (370) is fixedly installed on the upper surface of the rotating tube (320).

[0050] At this time, the internal fixing groove (373) of the fixing cover (370) is inserted and coupled to the fixing projection (383) of the rotating tube (380).

[0051] The spring (360) inserted into the insertion groove (384) of the above-mentioned rotating tube (380) is not pushed out of the outside of the rotating tube (380) due to the fixing cover (370).

[0052] As a result, even when the blind is used for a long time, the phenomenon of the spring (360) pushing up the connecting pipe (350) is completely blocked, so the blind can be used stably for a long time without minor errors.

[0053] As shown in the attached drawing Fig. 9, the connecting projection (354) of the connector (350) is inserted into the insertion hole (374) of the fixing cover (370), and the spring catch groove (353) of the connecting projection (354) is inserted into the catch projection (361) of the spring (360) to be fastened.

[0054] The insertion groove (351) formed in the fastening projection (352) of the above connector (350) is inserted into the coupling projection (323) of the reduction body (320) to secure it.

[0055] Then, the connecting projection (354) of the connector (350) is inserted into the insertion hole (374) of the fixing cover (370), and the spring catch groove (353) of the connecting projection (354) is inserted into the catch projection (361) of the spring (360) to secure it.

[0056] In this way, the spring (360) inserted into the reduction gear (340) and the rotating tube (380) is connected and coupled through the connector (350).

[0057] The above outer case (390) is a cylindrical case having a locking groove (391) formed symmetrically on its outer surface and an opening (392) with one side open.

[0058] As described above, the spring (360) inserted into the reduction gear (340) and the rotating tube (380) is connected and combined with the connector (350), and then the outer case (390) is fastened to the exterior to complete the damper. At this time, the locking groove (391) of the outer case (390) is fastened to the projection (313) of the housing (310) and fixed.

[0059]

[0060] As shown in the attached drawing Fig. 10, the present invention first inserts an outer case (390) into one side of a rotating rod (420) on which a roll screen is wound and installed, and then inserts the coupling groove (385) of the rotating tube (380) into the coupling projection (411) of the bracket (410) to fix it.

[0061] And on the other side of the rotating rod (420), a rotating member that rotates by the tension of a spring of known configuration is inserted and installed.

[0062] In this state, when the roll screen is pulled downward, the connector (350) inserted into the catch (361) of the spring (360) rotates in the forward direction in which the spring (360) is wound, and as the inner diameter of the spring (360) decreases, the screen comes down smoothly.

[0063] At this time, the upper surface of the rotating tube (380) is connected to a fixed cover (370), so that the spring (360) completely blocks the phenomenon of pushing up the connector (350).

[0064] And the reduction body (320) of the reduction gear (340) connected to the connector (350) also rotates, and while rotating in a circular motion along the through grooves formed at the center (321a) and both sides (321b) of the stirring blade (321), the viscosity density of the brake oil (312) is maintained uniformly so that the screen can descend stably.

[0065] When the descending screen is released, the spring (360) stops when rotated in the forward direction, and at the same time, it stops as it rotates slightly in the reverse direction due to elasticity, causing the inner diameter of the spring (360) to increase.

[0066] At this time, the reduction body (320) of the reduction gear (340) also stops rotating and blocks the inflow of brake oil (312).

Claims

1. A reduction gear comprising a housing filled with oil and having an open inlet on the front, a reduction body inserted into the housing and having a plurality of stirring blades formed on its outer surface and having an oil passage inside and a coupling projection on its rear, a gasket in close contact with the front surface of the reduction body inserted into the housing, and a fixing cap sealing the inlet of the housing; A connector that is fastened to the coupling projection of the above-mentioned reduction member, having a fastening projection with an insertion groove formed on one side and a coupling projection having a spring catch groove formed on the other side; A spring with a stopper formed at one end; A fixing cover having a fixing plate formed symmetrically with a locking hole formed on the lower outer circumference, a fixing groove formed on the upper inner circumference, and an insertion hole provided on the upper surface; A rotating tube having fastening grooves formed symmetrically on the upper outer circumference with a central locking projection, and an insertion space into which a spring is inserted and a fixing projection protruding upwardly on the upper surface; and A damper structure for a blind, characterized by inserting a spring with a locking projection formed in the insertion space of a rotating tube, fastening the locking hole of a fixed cover to the locking projection of the rotating tube, fastening the spring locking groove of a connector to the locking projection of the spring, and then fastening and fixing an outer case.

2. In Paragraph 1, A damper structure for a blind, further comprising a stirring blade of the above-mentioned reduction gear having a passage groove formed in the center on one side and on both sides on the other side for the brake oil to circulate and rotate the brake oil so as to maintain constant uniformity of viscosity.

Images