Hand-cranking pulley device for sunshade curtain

Abstract

The utility model relates to the technical field of sunshade curtain accessories, in particular to a hand-cranking pulley device for a sunshade curtain, which comprises a pulley assembly and a hand-cranking handle, the pulley assembly comprises a fixedly connected bottom plate, a screw rod is fixedly connected to the middle of the outer side of the bottom plate, a pulley is rotatably connected to the outer side of the screw rod in a limiting manner, and an indexing pin for locking is arranged on the pulley. The sun-shading curtain has the advantages that by arranging the indexing pin, the pulley can be controlled to rotate or be locked freely, the limiting function is provided for the pulley, the steel cable can be effectively prevented from sliding during locking, and the situation that the sun-shading curtain is displaced and opened due to the wind action is prevented; in addition, the pulley assembly and the crank handle are of a detachable structure, the crank handle can be detachably stored, misoperation of non-professionals is prevented, and meanwhile the exposed handle is prevented from bumping people by mistake.

Description

Technical Field

[0001] The utility model relates to the technical field of sunshade curtain accessories, in particular to a hand-cranked pulley device for a sunshade curtain. Background Art

[0002] The existing manual sunshade relies on a pull cord to slide on a pulley to open or close, and its stopped state relies only on the friction between the pull cord and the pulley, and has almost no limiting function. When affected by factors such as outdoor wind, the sunshade will move uncontrollably, and the sunshade gradually moves to the unfolded state. The larger the unfolded area, the greater the wind pressure or wind load, and the force on the overall structure is transmitted from the sunshade to the supporting structures at both ends, such as columns or walls. At the very least, it will cause damage to the sunshade structure, and at the worst, it will cause a safety accident such as the collapse of columns or walls. For this reason, the utility model proposes a hand-cranked pulley device for a sunshade to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a hand-cranked pulley device for a sunshade curtain to solve the problems raised in the above background technology.

[0004] To achieve the above object, the utility model provides the following technical solution: a hand-cranked pulley device for sunshade curtains, comprising:

[0005] The pulley assembly comprises a fixedly connected bottom plate, a screw is fixedly connected to the middle of the outer side of the bottom plate, a pulley is rotatably and position-limitedly connected to the outer side of the screw, an indexing pin for locking is arranged on the pulley, a steel cable is connected to the outer side of the pulley, and a hand crank is detachably connected to the middle of the outer side of the pulley;

[0006] A hand crank comprises a sleeve connected to a pulley, a rocker arm is fixedly connected to the end of the sleeve, and a handle is rotatably connected to the outer side of the end of the rocker arm.

[0007] Preferably, a connecting hole is opened through the middle of the pulley, bearing grooves are opened on both sides of the connecting hole, bearings are fixedly connected in the bearing grooves, the pulley is rotatably connected to the outside of the screw through the bearings, a threaded head is provided at the end of the screw, and a nut is connected to the outside of the threaded head, and the position of the pulley is limited by the nut.

[0008] Preferably, an indexing pin is provided on the outer side of the pulley near the outer ring, and the indexing pin is inserted into and passes through the pulley from the outside to the inside, and the indexing pin includes an outer plunger sleeve rod, a connecting thread is provided on the outer side of the plunger sleeve rod, a threaded hole corresponding to the plunger sleeve rod is provided on the pulley, and the plunger sleeve rod is fastened to the threaded hole through the connecting thread, a plunger rod is inserted into the inside of the plunger sleeve rod, a pull ring is connected to the outer end of the plunger rod, a groove corresponding to the pull ring is provided on the outer end of the plunger sleeve rod, a locking plug is provided at the end of the plunger rod, a spring is sleeved on the outer side of the plunger rod, one end of the spring is fixed to the inner wall of the plunger sleeve rod, and the other end is fixedly connected to the outer side of the plunger rod, a locking socket corresponding to the locking plug is provided on the bottom plate, and a plurality of locking sockets are provided with evenly distributed in a ring array.

[0009] Preferably, a sleeve slot is provided on the outer side of the middle connecting hole of the pulley, a plurality of screw slots evenly distributed in a circular array are provided at the bottom of the sleeve slot, and a sleeve in the hand crank handle is inserted into the sleeve slot.

[0010] Preferably, the sleeve is a circular sleeve, and a plurality of screw plugs evenly distributed in a circular array are protruding from the front end of the sleeve, and the screw plugs are correspondingly inserted into the screw slots at the bottom of the sleeve slot, and the rear end of the sleeve is fixedly connected to the rocker arm, and the rocker arm and the sleeve are connected at a right angle, and one end of the rocker arm is penetrated by a connecting head, and the connecting head is connected to a connecting hole correspondingly opened at the rear end of the sleeve, and positioning grooves are opened through the upper and lower ends of the connecting hole, and a capless bolt is connected from the outside to the inside in the positioning groove, and the connecting head and the rocker arm are fixed by the capless bolt.

[0011] Preferably, a bearing hole is opened in the middle of the other end of the rocker arm, a rotating bearing is connected in the bearing hole, a rotating rod is connected in the rotating bearing, the rotating rod is fixedly connected to the front end of the handle, and the handle is rotatably connected to the outside of the other end of the rocker arm through the rotating rod and the rotating bearing.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model can control the pulley to rotate freely or lock by setting an indexing pin, and provide a limit function for the pulley, which can effectively prevent the steel cable from sliding when locked, so as to prevent the sunshade from being displaced and opened by wind force, causing the sunshade to be damaged by excessive wind force, thereby improving the use effect. Moreover, the pulley assembly and the hand crank handle are detachable structures, and the hand crank handle can be disassembled and stored to prevent non-professionals from operating it incorrectly and avoid accidental injuries caused by the exposed handle. Moreover, the hand crank handle can be replaced by an electric drill, and the pulley assembly can also be driven by the electric drill, which saves more manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a right view of the utility model;

[0016] Figure 3 It is a right side view of the pulley assembly in the utility model;

[0017] Figure 4 This is a schematic diagram of the unlocked state structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the rocker arm replacement structure of the utility model;

[0019] Figure 6 This is the structural explosion view of this practical model;

[0020] Figure 7 This is an exploded view of the side structure of the utility model.

[0021] In the figure: 1 pulley assembly, 2 hand crank, 3 base plate, 4 screw, 5 nut, 6 pulley, 7 bearing, 8 indexing pin, 9 sleeve, 10 rocker arm, 11 handle, 12 steel cable, 13 hand drill, 14 connecting hole, 15 bearing groove, 16 plunger sleeve rod, 17 plunger rod, 18 locking plug, 19 pull ring, 20 screw plug, 21 capless bolt, 22 connector, 23 screw slot. DETAILED DESCRIPTION

[0022] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present utility model, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0026] See also Figures 1 to 7 The utility model provides a technical solution: a hand-cranked pulley device for sunshade curtains, comprising

[0027] The pulley assembly 1 comprises a fixedly connected bottom plate 3, a screw rod 4 is fixedly connected to the middle of the outer side of the bottom plate 3, a pulley 6 is rotatably and position-limitedly connected to the outer side of the screw rod 4, an indexing pin 8 for locking is arranged on the pulley 6, a steel cable 12 is connected to the outer side of the pulley 6, and a hand crank 2 is detachably connected to the middle of the outer side of the pulley 6;

[0028] A hand crank 2, the hand crank 2 comprises a sleeve 9 connected to the pulley 6, a rocker arm 10 is fixedly connected to the end of the sleeve 9, and a handle 11 is rotatably connected to the outer side of the end of the rocker arm 10;

[0029] A connecting hole 14 is formed through the middle of the pulley 6, bearing grooves 15 are formed on both sides of the connecting hole 14, bearings 7 are fixedly connected in the bearing grooves 15, the pulley 6 is rotatably connected to the outside of the screw 4 through the bearings 7, a threaded head is provided at the end of the screw 4, and a nut 5 is connected to the outside of the threaded head, and the position of the pulley 6 is limited by the nut 5;

[0030] An indexing pin 8 is arranged on the outer side of the pulley 6 near the outer ring, and the indexing pin 8 is inserted from the outside to the inside and passes through the pulley 6. The indexing pin 8 includes an outer plunger sleeve rod 16, and a connecting thread is arranged on the outer side of the plunger sleeve rod 16. A threaded hole corresponding to the plunger sleeve rod 16 is provided on the pulley 6. The plunger sleeve rod 16 is fastened and connected to the threaded hole through the connecting thread. A plunger plug rod 17 is inserted into the plunger sleeve rod 16, and a pull ring 19 is connected to the outer end of the plunger plug rod 17. A card groove corresponding to the pull ring 19 is arranged on the outer end of the plunger sleeve rod 16, and a locking plug 18 is arranged at the end of the plunger plug rod 17. A spring is sleeved on the outer side of the plunger plug rod 17, one end of the spring is fixed to the inner wall of the plunger sleeve rod 16, and the other end It is fixedly connected to the outside of the plunger rod 17, and a locking socket corresponding to the locking plug 18 is provided on the bottom plate 3. The locking sockets are arranged in a ring array and are evenly distributed. By setting the indexing pin 8, the pulley 6 can be controlled to rotate freely or be locked, and a limit function is provided for the pulley 6. The steel cable 12 can be effectively prevented from sliding when locked to prevent the sunshade from being displaced and opened by the wind, resulting in damage to the sunshade due to excessive wind force, thereby improving the use effect. When in use, the pull ring 19 is pulled outward and rotated, the pull ring 19 is disengaged from the card slot, and the locking plug 18 is disengaged from the locking socket. At this time, the pulley 6 is in the open state and can rotate freely, otherwise the pulley 6 is locked;

[0031] A sleeve slot is provided at the outer end of the middle connecting hole 14 of the pulley 6, and a plurality of screw slots 23 evenly distributed in a circular array are provided at the bottom of the sleeve slot, and the sleeve 9 in the hand crank 2 is inserted into the sleeve slot;

[0032] The sleeve 9 is a circular sleeve, and a plurality of screw plugs 20 evenly distributed in a circular array are protruding from the front end of the sleeve 9. The screw plugs 20 are correspondingly inserted into the screw slots 23 at the bottom of the sleeve slot. The rear end of the sleeve 9 is fixedly connected to the rocker arm 10, and the rocker arm 10 is connected to the sleeve 9 at a right angle. One end of the rocker arm 10 is penetrated and connected with a connector 22, and the connector 22 is connected to the corresponding connection hole opened at the rear end of the sleeve 9. The upper and lower ends of the connection hole are penetrated with positioning grooves, and the connection from the outside to the inside of the positioning groove is Capless bolts are used to fix the connector 22 and the rocker arm 10. The pulley assembly 1 and the hand crank 2 can be detachably arranged. The hand crank 2 can be detached and stored to prevent non-professionals from misoperating and avoid the exposed handle 11 from accidentally hitting and injuring people. The hand crank 2 can be replaced by a hand drill 13. The pulley assembly 1 can also be driven by the hand drill 13. The output end of the hand drill 13 drives the sleeve 9 and then drives the pulley 6 to rotate and drive the steel cable 12 to drive the sunshade to be folded or unfolded, which saves more manpower.

[0033] A bearing hole is provided in the middle of the other end of the rocker arm 10, a swivel bearing is connected in the bearing hole, a rotating rod is connected in the swivel bearing, the rotating rod is fixedly connected to the front end of the handle 11, and the handle 11 is rotatably connected to the outside of the other end of the rocker arm 10 through the swivel rod and the swivel bearing.

[0034] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hand-cranked pulley device for a sunshade, characterized in that: include A pulley assembly (1), the pulley assembly (1) comprising a fixedly connected base plate (3), a screw rod (4) being fixedly connected to the middle of the outer side of the base plate (3), a pulley (6) being rotatably and positionally connected to the outer side of the screw rod (4), a locking indexing pin (8) being provided on the pulley (6), a steel cable (12) being connected to the outer side of the pulley (6), and a hand crank (2) being detachably connected to the middle of the outer side of the pulley (6); A hand crank (2), the hand crank (2) comprising a sleeve (9) connected to a pulley (6), a rocker arm (10) being fixedly connected to the end of the sleeve (9), and a handle (11) being rotatably connected to the outer side of the end of the rocker arm (10).

2. A hand-cranked pulley device for sunshade curtain according to claim 1, characterized in that: A connecting hole (14) is provided through the middle of the pulley (6), bearing grooves (15) are provided on both sides of the connecting hole (14), bearings (7) are fixedly connected in the bearing grooves (15), the pulley (6) is rotatably connected to the outside of the screw rod (4) through the bearings (7), a threaded head is provided at the end of the screw rod (4), and a nut (5) is connected to the outside of the threaded head, and the position of the pulley (6) is limited by the nut (5).

3. A hand-cranked pulley device for sunshade curtain according to claim 2, characterized in that: The pulley (6) is provided with an indexing pin (8) on the outer side close to the outer ring. The indexing pin (8) is inserted into and penetrates the pulley (6) from the outside to the inside. The indexing pin (8) includes an outer plunger sleeve rod (16). The outer side of the plunger sleeve rod (16) is provided with a connecting thread. The pulley (6) is provided with a threaded hole corresponding to the plunger sleeve rod (16). The plunger sleeve rod (16) is fastened in the threaded hole through the connecting thread. A plunger plug rod (17) is inserted into the inside of the plunger sleeve rod (16). The outer end of the plunger plug rod (17) is A pull ring (19) is connected, a slot corresponding to the pull ring (19) is arranged at the outer end of the plunger sleeve (16), a locking plug (18) is arranged at the end of the plunger plug rod (17), a spring is sleeved on the outer side of the plunger plug rod (17), one end of the spring is fixed to the inner wall of the plunger sleeve (16), and the other end is fixedly connected to the outer side of the plunger plug rod (17), and a locking socket corresponding to the locking plug (18) is opened on the bottom plate (3), and a plurality of locking sockets are arranged and evenly distributed in a ring array.

4. A hand-cranked pulley device for sunshade curtain according to claim 1, characterized in that: A sleeve slot is provided on the outer side of the middle connecting hole (14) of the pulley (6), and a plurality of screwing slots (23) are evenly distributed in a circular array at the bottom of the sleeve slot. The sleeve (9) in the hand crank (2) is inserted into the sleeve slot.

5. A hand-cranked pulley device for sunshade curtain according to claim 4, characterized in that: The sleeve (9) is a circular sleeve. The front end of the sleeve (9) is protrudingly provided with a plurality of screw plugs (20) evenly distributed in a circular array. The screw plugs (20) are correspondingly inserted into the screw slots (23) at the bottom of the sleeve slot. The rear end of the sleeve (9) is fixedly connected to the rocker arm (10). The rocker arm (10) and the sleeve (9) are connected in a right angle. One end of the rocker arm (10) is penetrated and connected with a connector (22). The connector (22) is connected to a corresponding connection hole opened at the rear end of the sleeve (9). Positioning grooves are penetrated and opened at the upper and lower ends of the connection hole. A capless bolt is connected from the outside to the inside of the positioning groove. The connector (22) and the rocker arm (10) are fixed by the capless bolt.

6. A hand-cranked pulley device for sunshade curtain according to claim 5, characterized in that: A bearing hole is provided in the middle of the other end of the rocker arm (10), a rotary bearing is connected in the bearing hole, a rotating rod is connected in the rotary bearing, the rotating rod is fixedly connected to the front end of the handle (11), and the handle (11) is rotatably connected to the outside of the other end of the rocker arm (10) through the rotating rod and the rotary bearing.

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