Apparatus capable of adjusting tensioning strength for use in curtain driver

Abstract

An apparatus capable of adjusting tensioning strength for use in a curtain driver, comprising a main drive unit (1) and adjustment suspensions (2), the adjustment suspensions (2) being symmetrically mounted on two sides of the main drive unit (1), and the adjustment suspensions (2) being connected to the main drive unit (1) in a snap-fit manner. Each adjustment suspension (2) comprises a face shell (21) and a bottom cover (22) which are fixedly installed together, a position-locking base (25) being disposed between the face shell (21) and the bottom cover (22) so as to be movable in the up-down direction, limiting blocking pieces (217) and limiting pieces (255) for limiting sliding distance being correspondingly disposed on the face shell (21) and on the position-locking base (25), a position-locking sliding block (24) being movably disposed within the position-locking base (25), a hook (241) being fixedly disposed on the position-locking sliding block (24), the position-locking sliding block (24) also being fixedly connected to a slingshot plate (23), the slingshot plate (23) being slidably connected to the bottom cover (22), and a spring (26) being disposed between the face shell (21) and the position-locking base (25). The structure is simpler, easier to adjust, replaces adjustment by buttons, prevents adjustment failure caused by the pulling force of a curtain hook, and has more uniform elastic force, a longer service life, and fewer traction structures, saving button traction force.

Description

A device for adjusting the tension strength of a curtain drive Technical Field

[0001] The invention relates to the technical field of curtain accessories, in particular to a device capable of adjusting the tensioning strength of a curtain drive. Background Art

[0002] Curtains are generally composed of tracks (such as straight groove tracks, I-tracks, Roman rod tracks, cylindrical tracks) and curtain hanging components.

[0003] In order to make curtains automated and intelligent, they need to be controlled by curtain drivers.

[0004] For example, the Chinese patent authorization publication number CN217524563U is a curtain drive: it includes an outer casing, and a universal connector assembly is provided on both sides of the outer casing; the universal connector assembly includes a connecting hook and an outer casing, and a push switch for adjusting the vertical position of the outer casing is provided on the outer casing, and a stop mechanism realizes the position stop and fixation of the outer casing after sliding adjustment in the vertical sliding cavity; the stop mechanism is a stepped tooth positioning mechanism; the driving motor drives the rotation of the driving wheel through the clutch reducer. Technical issues

[0005] This technical solution adjusts the friction between the drive wheel and the curtain track to a more appropriate level, improving the smoothness of the product during use. It also avoids slipping caused by too little friction and a heavy load caused by the curtain's own weight, and avoids excessive friction that increases the load on the motor and consumes energy.

[0006] However, the above technical solution has the following defects:

[0007] 1. It is necessary to limit the flat part of the long rod through a slider to prevent the rotation of the connecting hook. The structure is complex and the processing is difficult.

[0008] 2. The universal connector assembly and the drive structure are both installed in the outer housing. When the push switch of the universal connector assembly is adjusted downward, it is necessary to overcome the elastic force of the internal pressure spring. During the adjustment process, the push switch may be out of finger control and rebound.

[0009] 3. The reset of the push switch uses a spring reset, but the spring is prone to mechanical fatigue, thus losing its elasticity, resulting in inaccurate reset.

[0010] Therefore, we propose a device for adjusting the tensioning strength of a curtain drive in order to solve the above problems. Technical Solutions

[0011] The object of the present invention is to provide a device for adjusting the tensioning strength of a curtain drive to solve the problems raised in the above background technology.

[0012] To achieve the above object, the present invention provides the following technical solution: a device for adjusting the tension strength of a curtain drive, comprising: a driving host and an adjusting suspension, wherein the adjusting suspension is symmetrically installed on both sides of the driving host;

[0013] The adjustable suspension is connected to the driving host by a buckle;

[0014] The adjustable suspension comprises a face shell and a bottom cover fixedly mounted together, a locking seat is provided on the inner wall of the face shell for sliding up and down, and a limit block and a limit plate for limiting the sliding distance are provided on the face shell and the locking seat respectively;

[0015] A locking slider is movably positioned in the locking seat, and a hook is fixedly provided on the locking slider. The locking slider is also fixedly connected to the slingshot, and the slingshot is slidably connected to the bottom cover;

[0016] A spring is provided between the face shell and the locking seat.

[0017] Preferably, a card slot and a buckle slot are provided on the casing of the driving main unit, a convex head is integrally provided on the upper end of the surface shell for adjusting the suspension, an elastic locking piece is provided at the lower end of the surface shell, a locking tongue is provided on the lower surface of the elastic locking piece, the convex head and the card slot are plugged together, and the elastic locking piece and the lock tongue are elastically buckled into the buckle slot.

[0018] Preferably, a button sliding hole and a hook through hole are provided on the face shell, a positioning column is integrally provided at the bottom of the inner wall of the face shell, and limit blocks are symmetrically provided on both sides of the button sliding hole on the inner wall of the face shell.

[0019] Preferably, the face shell is movably provided with a locking seat inside the key sliding hole, and edge guards are integrally provided on both sides of the locking seat. The outer surface of the edge guard is integrally provided with a limiting piece, and the limiting piece is located between the limiting blocks.

[0020] Preferably, a guide groove is provided in the middle of the upper end of the locking seat, a hanging ear is integrally provided at the lower end of the locking seat, and a spring is provided between the hanging ear and the positioning column.

[0021] Preferably, a button through hole is opened in the middle of the locking seat, and the inner surface of the locking seat is integrally provided with first step locking teeth on both sides of the button through hole, and the surface of the locking slider is symmetrically provided with second step locking teeth, which engage with the first step locking teeth when they are tightly attached.

[0022] Preferably, a button is integrally provided on the front surface of the positioning slider, and the button slides through the button through hole and the button sliding hole.

[0023] Preferably, a hook is embedded in the rear surface of the positioning slider, and the hook comprises a straight rod, and a first hook body and a second hook body are integrally provided at the upper and lower ends of the straight rod respectively. The first hook body is hooked and hoisted with the curtain hanger, and the second hook body is hooked in the positioning slider, the straight rod passes through the guide groove, and the first hook body passes through the hook through hole.

[0024] Preferably, the slingshot is provided with four spring feet, each of which is integrally provided with a reinforcing protrusion, and the slingshot is slidably connected to the bottom cover via the spring feet. Beneficial effects

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. By placing the spring outside and setting a receiving groove on the back of the button to limit the hook, the hook is restricted from moving up and down while also restricting its horizontal rotation, making the structure simpler.

[0027] 2. By changing the direction of the spring tension, the locking part will not be affected by the spring force when adjusting the hook, making the adjustment easier;

[0028] 3. The adjustment suspension and the drive host are detachable. After adjusting the hook height and hanging the hook into the curtain hook body, the adjustment suspension is buckled on the drive host to replace the button adjustment to prevent adjustment failure due to the tension of the curtain hook body;

[0029] 4. The four-legged arched protrusion with a reinforced protrusion structure provides the key reset elastic force, which is more uniform and has a longer service life;

[0030] 5. The button only needs to pull the hook, locking piece and reset slingshot, with less pulling structure, saving the button pulling force. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] FIG1 is a schematic structural diagram of the present invention;

[0032] FIG2 is a schematic diagram of the separation structure of the driving main unit and the adjustment suspension in the present invention;

[0033] FIG3 is a rear view of the adjustable suspension of the present invention;

[0034] FIG4 is an exploded view of the adjustable suspension in the present invention;

[0035] FIG5 is a schematic structural diagram of a slingshot and a positioning slider in the present invention;

[0036] FIG6 is a schematic structural diagram of the blocking seat in the present invention.

[0037] In the figure: 1. driving host; 11. card slot; 12. buckle slot; 2. adjustment suspension; 21. surface shell; 211. protrusion; 213. hook through hole; 214. button sliding hole; 215. elastic locking piece; 216. lock tongue; 217. limit block; 218. positioning column; 22. bottom cover; 23. spring; 231. reinforcement protrusion; 232. spring foot; 24. positioning slider; 241. hook; 2411. first hook body; 2412. second hook body; 2413. straight rod; 242. fixing hole; 243. second step positioning tooth; 244. button; 25. positioning seat; 251. first step positioning tooth; 252. button through hole; 253. guide groove; 254. edge guard; 255. limit piece; 256. hanging ear; 26. spring. Modes for Carrying Out the Invention

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] Referring to Figures 1-6, the present invention provides a technical solution: a device for adjusting the tension strength of a curtain drive, comprising: a driving main unit 1 and an adjusting suspension 2. The driving main unit 1 is provided with a driving wheel on top, and the driving wheel can slide along the curtain track under the drive of the driving main unit 1. The driving main unit 1 is provided with an adjusting suspension 2 on both sides of the driving wheel in the direction of travel. The driving main unit 1 is suspended on the curtain track through the adjusting suspension 2, and the driving wheel can press against the curtain track to form a certain pressing force.

[0040] Specifically, a card slot 11 and a buckle slot 12 are provided on the housing of the driving host 1, a convex head 211 is integrally provided on the upper end of the surface shell 21 of the adjusting suspension 2, an elastic locking piece 215 is provided at the lower end of the surface shell 21, and a locking tongue 216 is provided on the lower surface of the elastic locking piece 215. By plugging the convex head 211 into the card slot 11, and then elastically buckling the elastic locking piece 215 and the locking tongue 216 into the buckle slot 12, the adjusting suspension 2 and the driving host 1 are buckled, making the disassembly and assembly of the adjusting suspension 2 and the driving host 1 more convenient;

[0041] The adjustable suspension 2 includes a surface shell 21 and a bottom cover 22, and the surface shell 21 and the bottom cover 22 are fixedly installed;

[0042] The housing 21 is provided with a button slide hole 214 and a hook through hole 213. A positioning column 218 is integrally provided at the bottom of the inner wall of the housing 21. The inner wall of the housing 21 is symmetrically provided with limit blocks 217 on both sides of the button slide hole 214.

[0043] The cover 21 is provided with a movable retaining seat 25 inside the key slide hole 214. The retaining seat 25 is provided with an integral edge guard 254 on both sides. The outer surface of the edge guard 254 is provided with an integral limit piece 255. The limit piece 255 is located between the limit block pieces 217, so that the distance that the retaining seat 25 can move up and down relative to the cover 21 is limited.

[0044] A guide groove 253 is provided in the middle of the upper end of the locking seat 25, and a hanging ear 256 is integrally provided at the lower end of the locking seat 25;

[0045] A spring 26 is provided between the hook 256 and the positioning post 218 to allow elasticity in the relative movement between the locking seat 25 and the housing 21. When the locking seat 25 moves upward, the spring 26 is stretched. Since the upward and downward displacement distance of the locking seat 25 is limited, the spring 26 can be protected from being broken.

[0046] A button through hole 252 is defined in the middle of the latch seat 25, and first-step latch teeth 251 are integrally formed on the inner surface of the latch seat 25 on both sides of the button through hole 252;

[0047] A locking slider 24 is slidably arranged in the locking seat 25;

[0048] A button 244 is integrally formed on the front surface of the locking slider 24 , and the button 244 slides through the button through hole 252 and the button sliding hole 214 ;

[0049] The surface of the locking slider 24 is symmetrically provided with second-step locking teeth 243 , which mesh with the first-step locking teeth 251 when they are in close contact, so that the locking slider 24 and the locking seat 25 are relatively fixed;

[0050] A fixing hole 242 is provided on the rear surface of the positioning slider 24, and the positioning slider 24 is fixed to the slingshot 23 through the fixing hole 242 and the bolt;

[0051] The rear surface of the positioning slider 24 is provided with a receiving groove, in which a hook 241 is embedded. The hook 241 includes a straight rod 2413. The upper and lower ends of the straight rod 2413 are respectively integrally provided with a first hook body 2411 and a second hook body 2412. The first hook body 2411 is hooked with the curtain hanger for hanging, and the second hook body 2412 is hooked around the fixing hole 242 to achieve the fixed setting of the hook 241 and the positioning slider 24. The straight rod 2413 passes through the guide groove 253, and the first hook body 2411 passes through the hook through hole 213.

[0052] The slingshot 23 is provided with four spring legs 232 , each of which is provided with a reinforcing protrusion 231 . The slingshot 23 is slidably connected to the bottom cover 22 via the spring legs 232 .

[0053] Insert the locking seat 25 into the inner side of the face shell 21, and lock the limiting piece 255 in the sliding groove between the limiting block pieces 217. Then hook one end of the spring 26 on the hanging ear 256 of the locking seat 25, and fix the other end on the positioning column 218 of the face shell 21;

[0054] Insert the second hook 2412 of the hook 241 into the groove of the locking slider 24 and cover the slingshot 23. Fix the slingshot 23 to the locking slider 24 with screws. At this time, the protrusion of the spring foot 232 extends toward the bottom cover 22.

[0055] Install the components assembled in the previous step onto the retaining seat 25, with the hook 241 passing through the hook through hole 213 and the button 244 pushed into the button sliding hole 214;

[0056] Then install the bottom cover 22 to the inside of the surface shell 21 to fix the adjustment components of the adjustment suspension 2;

[0057] The spring 26 and the curtain hanging part interact with each other to pull the blocking seat 25 to be elastically fixed within the sliding groove travel range of the limiting block 217, providing a suitable pressure for the driving wheel to prevent the driving wheel from idling or locking.

[0058] Working principle: Fix the two side adjustment suspensions 2 to the driving host 1 by snapping, then hook the hook 241 to the curtain hanger, and hang the driving wheel under the curtain guide rail;

[0059] Press the driving main unit 1 by hand to make the driving wheel contact with the guide rail, and press the button 244 and push it downward to perform the first tension adjustment, so that the button 244 is pulled downward as much as possible. At this time, although the driving wheel can contact with the guide rail, the tension is not enough, which may easily cause slippage between the driving wheel and the guide rail.

[0060] Press the elastic locking piece 215, remove the cover 21 from the driving main unit 1, then press the button 244 and push it downward and slide it slightly to perform the second tension adjustment. At this time, the tension adjustment is not affected by the pulling force of the driving main unit 1, so the adjustment force is small.

[0061] The finally adjusted suspension 2 is mounted on the driving host 1 by snapping. Since the protrusion 211 of the cover 21 is embedded in the slot 11 of the driving host 1, a force fulcrum can be formed. Therefore, when the cover 21 is rotated and buckled on the driving host 1, the force arm of the cover 21 is longer and the buckling force is smaller.

[0062] After two adjustments, the drive wheel can be adjusted to a suitable tension level.

[0063] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0064] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for adjusting the tension strength of a curtain drive, comprising: A driving main unit (1) and an adjusting suspension (2), wherein the adjusting suspension (2) is symmetrically mounted on both sides of the driving main unit (1); The feature is that the adjustment suspension (2) is snap-connected to the driving main unit (1); The adjustable suspension (2) comprises a surface shell (21) and a bottom cover (22) fixedly mounted together, a locking seat (25) is provided on the inner wall of the surface shell (21) for sliding up and down, and a limit stopper (217) and a limiter (255) for limiting the sliding distance are provided on the surface shell (21) and the locking seat (25) respectively; A locking slider (24) is movably positioned in the locking seat (25), the locking slider (24) is fixedly mounted with a hook (241), the locking slider (24) is also fixedly connected to the slingshot (23), and the slingshot (23) is slidably connected to the bottom cover (22); A spring (26) is provided between the face shell (21) and the locking seat (25).

2. A device for adjusting the tension strength of a curtain drive according to claim 1, characterized in that: The housing of the driving main unit (1) is provided with a card slot (11) and a buckle slot (12); the upper end of the surface shell (21) for adjusting the suspension (2) is integrally provided with a convex head (211); the lower end of the surface shell (21) is provided with an elastic locking piece (215); the lower surface of the elastic locking piece (215) is provided with a locking tongue (216); the convex head (211) and the card slot (11) are plugged together, and the elastic locking piece (215) and the locking tongue (216) are elastically buckled into the buckle slot (12).

3. A device for adjusting the tension strength of a curtain drive according to claim 2, characterized in that: The face shell (21) is provided with a key slide hole (214) and a hook through hole (213), a positioning column (218) is integrally provided at the bottom of the inner wall of the face shell (21), and limit baffles (217) are symmetrically provided on both sides of the key slide hole (214) on the inner wall of the face shell (21).

4. A device for adjusting the tension strength of a curtain drive according to claim 3, characterized in that: The face shell (21) is movably provided with a locking seat (25) inside the key slide hole (214), and edge guards (254) are integrally provided on both sides of the locking seat (25), and a limiting piece (255) is integrally provided on the outer surface of the edge guard (254), and the limiting piece (255) is located between the limiting blocking pieces (217).

5. A device for adjusting the tension strength of a curtain drive according to claim 4, characterized in that: A guide groove (253) is provided in the middle of the upper end of the locking seat (25), a hanging ear (256) is integrally provided at the lower end of the locking seat (25), and a spring (26) is provided between the hanging ear (256) and the positioning column (218).

6. A device for adjusting the tension strength of a curtain drive according to claim 5, characterized in that: A key through hole (252) is provided in the middle of the locking seat (25); first step locking teeth (251) are integrally provided on the inner surface of the locking seat (25) at both sides of the key through hole (252); second step locking teeth (243) are symmetrically provided on the surface of the locking slider (24); the second step locking teeth (243) mesh with the first step locking teeth (251) when they are in close contact.

7. A device for adjusting the tension strength of a curtain drive according to claim 6, characterized in that: The front surface of the locking slider (24) is integrally provided with a button (244), and the button (244) slides through the button through hole (252) and the button sliding hole (214).

8. A device for adjusting the tension strength of a curtain drive according to claim 7, characterized in that: The rear surface of the positioning slider (24) is provided with a receiving groove, and the receiving groove is embedded with a hook (241), the hook (241) comprises a straight rod (2413), and the upper and lower ends of the straight rod (2413) are respectively integrally provided with a first hook body (2411) and a second hook body (2412), the first hook body (2411) is hooked and hoisted with a curtain hanging part, and the second hook body (2412) is hooked in the positioning slider (24), the straight rod (2413) passes through the guide groove (253), and the first hook body (2411) passes through the hook through hole (213).

9. The device for adjusting the tension strength of a curtain drive according to claim 1, characterized in that: The slingshot (23) is provided with four spring feet (232), and the spring feet (232) are integrally provided with a reinforcing protrusion (231). The slingshot (23) is slidably connected to the bottom cover (22) via the spring feet (232).

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