Pulley capable of preventing falling of adjusting screw

Abstract

The utility model relates to the technical field of door and window pulleys, in particular to an adjusting screw anti-falling pulley which comprises a pulley body, a connecting shell, an anti-falling block and an adjusting screw. Specifically, the connecting shaft is arranged on the connecting shell, the inclined hole is formed in the pulley body, the height of the pulley body can be adjusted through cooperation of the connecting shaft and the inclined hole and twisting of the adjusting screw, adjustment is convenient, and the pulley is suitable for doors and windows of various sizes. In addition, an anti-falling block is arranged, and a limiting protruding block is arranged in the anti-falling block so that the adjusting screw can be prevented from falling off in the installing and adjusting process. In addition, the anti-falling block is provided with the containing groove with the upper end open, the adjusting screw can vertically enter the containing groove, the height of the pulley body can be adjusted without disassembling the door and window, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of door and window pulleys, in particular to a pulley with an anti-falling adjusting screw. Background Art

[0002] Door and window pulleys are indispensable parts of sliding doors and windows, some of which have the function of adjusting height. Door and window pulleys with adjustable height are mainly adjusted by adjusting screws.

[0003] The current door and window pulleys have the problem of screws falling off during installation and adjustment. The traditional solution is to stamp the tail of the screw or add non-standard notches on the screw to snap with other parts to prevent it from falling off. The above solutions have the problems of high processing difficulty and easy wear. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a pulley with an adjusting screw that can prevent it from falling off.

[0005] The utility model adopts the following technical solutions:

[0006] A pulley with an anti-dropping adjusting screw, comprising a pulley body, a connecting shell assembled on the outside of the pulley body, an anti-dropping block connected to one end of the connecting shell, and an adjusting screw arranged in the anti-dropping block and connected to the pulley body at one end; the anti-dropping block is provided with a receiving groove, the adjusting screw is arranged in the receiving groove, a limiting protrusion is provided on the inner side of the receiving groove, and the limiting protrusion is used to prevent the adjusting screw from falling off the receiving groove; the pulley body is provided with an inclined hole, and a connecting shaft inserted in the inclined hole is fixedly provided on the inner side of the connecting shell; the adjusting screw is used to drive the connecting shell to move along the length direction to achieve height adjustment of the pulley body.

[0007] Preferably, a side of the anti-dropping block away from the connecting shell is provided with a through hole, and the through hole is connected to the accommodating groove.

[0008] Preferably, a guide groove is provided on a side of the anti-slip block away from the connecting shell, and the guide groove is arranged around the through hole.

[0009] Preferably, two connecting grooves are symmetrically provided on both sides of the anti-dropping block, and two connecting arms are arranged with relative gaps at one end of the connecting shell close to the anti-dropping block, and the connecting arms are assembled in the connecting grooves to realize the assembly connection between the anti-dropping block and the connecting shell.

[0010] Preferably, the connecting arm includes a top end surface arranged at the top of the connecting arm, a bottom end surface arranged at the bottom of the connecting arm, and a supporting surface arranged on the inner side of the connecting arm, the width of the top end surface is smaller than the width of the bottom end surface, and the supporting surface is inclined inward from top to bottom; a contact surface is provided on the inner side of the connecting groove, the contact surface is inclined inward from top to bottom, and the contact surface is arranged corresponding to the supporting surface.

[0011] Preferably, the inner side of the accommodating groove is provided with symmetrically distributed limiting portions, and the limiting portions are used to resist the head of the adjusting screw.

[0012] Preferably, the pulley body comprises a support frame, and a pulley block fixed to the inner side of the support frame; and the connecting shell is arranged on the outer side of the support frame.

[0013] Preferably, the pulley block includes a connecting seat, a pulley rotatably connected to the inner side of the connecting seat, and a connecting column fixed on the connecting seat; both ends of the connecting column pass through the connecting seat and are connected to the support frame.

[0014] Preferably, a threaded connector is fixedly provided at one end of the support frame close to the anti-dropping block; and the adjusting screw is connected to the threaded connector via threads.

[0015] Preferably, a connecting plate is provided at the upper end of the connecting shell, and the connecting plate is used to be connected to the structure of the door and window.

[0016] The beneficial effects of the utility model are:

[0017] The pulley with an anti-drop adjusting screw involved in the utility model comprises a pulley body, a connecting shell, an anti-dropping block and an adjusting screw; specifically, a connecting shaft is arranged on the connecting shell, and an inclined hole is arranged on the pulley body, and the height of the pulley body can be adjusted by twisting the adjusting screw through the cooperation of the connecting shaft and the inclined hole, and the adjustment is convenient and suitable for doors and windows of various sizes; in addition, an anti-dropping block is arranged, and a limiting protrusion is arranged in the anti-dropping block to prevent the adjusting screw from dropping during the installation and adjustment process; in addition, the anti-dropping block is arranged with a receiving groove with an opening at the upper end, and the adjusting screw can vertically enter the receiving groove, and the height of the pulley body can be adjusted without disassembling the doors and windows, which saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the pulley with an adjusting screw to prevent it from falling off according to the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the structure explosion of the pulley with the adjusting screw preventing it from falling off;

[0020] Figure 3 for Figure 1 A top view of a pulley with an adjusting screw to prevent it from falling off;

[0021] Figure 4 for Figure 3 AA section view along the middle line;

[0022] Figure 5 for Figure 3 Cross-sectional view along the middle line BB;

[0023] Figure 6 for Figure 2 The structural diagram of the pulley block in FIG.

[0024] Figure 7 for Figure 2 A schematic diagram of the structure of the connection shell in FIG.

[0025] Figure 8 for Figure 2 Schematic diagram of the structure of the anti-falling block.

[0026] Numbers in the figure:

[0027] 10- pulley body; 11- inclined hole; 12- support frame;

[0028] 13-pulley block; 131-connecting seat; 132-pulley; 133-connecting column; 14-threaded connector;

[0029] 20-connection housing; 21-connection shaft; 22-connection plate; 23-connection hole;

[0030] 24-connecting arm; 241-top end surface; 242-bottom end surface; 243-support surface;

[0031] 30-anti-drop block; 31-accommodating groove; 32-limiting protrusion; 33-perforation; 34-guide groove;

[0032] 35-connecting groove; 351-butting surface;

[0033] 40-Adjusting screw. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0035] In the description of the present invention, it should be noted that the terms "vertical direction", "upper", "lower", "horizontal" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or a connection through an intermediate medium, or 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.

[0037] like Figures 1 to 8 As shown, the pulley with an adjusting screw to prevent it from falling off of the utility model includes a pulley body 10, a connecting shell 20 assembled on the outside of the pulley body 10 and used for connecting with doors and windows, an anti-falling block 30 connected to one end of the connecting shell 20, and an adjusting screw 40 arranged in the anti-falling block 30 and connected to the pulley body 10 at one end.

[0038] The pulley body 10 is provided with an oblique hole 11, and a connecting shaft 21 inserted into the oblique hole 11 is fixedly provided on the inner side of the connecting housing 20; Figure 5 As shown, rotating the adjusting screw 40 can drive the connecting housing 20 to move in the horizontal direction. During the movement, the connecting shaft 21 moves along the inclined hole 11, thereby driving the connecting housing 20 to move in the vertical direction, thereby achieving height adjustment of the pulley body 10.

[0039] The anti-drop block 30 is provided with a receiving groove 31 with an upper opening, a limiting protrusion 32 is provided on the inner side of the receiving groove 31, and an adjusting screw 40 is arranged in the receiving groove 31. Figure 4 As shown, the limiting protrusion 32 is located at the upper end of the adjusting screw 40, which can prevent the adjusting screw 40 from shaking too much and falling out of the receiving groove 31 during the adjustment process. At the same time, since the upper end of the receiving groove 31 is open, the adjusting screw 40 can be vertically inserted into the anti-falling block 30, and then the adjusting screw 40 is rotated to adjust the height of the pulley body 10, without disassembling the door and window, saving time and effort.

[0040] See also Figure 2 and Figure 6The pulley body 10 includes a support frame 12 and a pulley block 13 fixed inside the support frame 12; the connection housing 20 is arranged outside the support frame 12, and the inclined hole 11 is arranged on the support frame 12; the pulley block 13 includes a connection seat 131, a pulley 132 rotatably connected to the inside of the connection seat 131, and a connection column 133 fixed on the connection seat 131, and both ends of the connection column 133 penetrate the connection seat 131 and are connected to the support frame 12. A threaded connector 14 is fixedly provided at one end of the support frame 12 near the anti-dropping block 30, and the inner wall of the threaded connector 14 is provided with threads, which are connected to the adjusting screw 40 through the threads.

[0041] See also Figure 2 and Figure 7 The upper end of the connecting shell 20 is provided with an integrally formed connecting plate 22, and a connecting hole 23 is provided on the connecting plate 22. The connecting plate 22 and the connecting hole 23 are used for structural connection with doors and windows. The end of the connecting shell 20 close to the anti-dropping block 30 is provided with a connecting arm 24 extending inward and vertically arranged. The connecting arm 24 includes a top end surface 241 arranged at the top of the connecting arm 24, a bottom end surface 242 arranged at the bottom of the connecting arm 24, and a supporting surface 243 arranged on the inner side of the connecting arm 24. The width of the top end surface 241 is smaller than the width of the bottom end surface 242, and the supporting surface 243 is inclined inward from top to bottom, so that the connecting arm 24 is in an inverted trapezoidal shape.

[0042] See also Figure 2 and Figure 8 The side of the anti-drop block 30 away from the connection housing 20 is provided with a through hole 33, and the through hole 33 is connected to the receiving groove 31. The screwdriver can pass through the through hole 33 to rotate the adjusting screw 40 in the receiving groove 31 to adjust the height of the pulley body 10, which is convenient for adjustment. In addition, a guide groove 34 is provided on the side of the anti-drop block 30 away from the connection housing 20, and the guide groove 34 is arranged around the through hole 33. Under the action of the guide groove 34, the screwdriver can quickly locate the through hole 33 and the adjusting screw 40. A connecting groove 35 is symmetrically provided on the outer side of the anti-slip block 30, and the connecting groove 35 is used to assemble with the connecting arm 24 to realize the assembly connection between the anti-slip block 30 and the connecting shell 20; an abutment surface 351 is provided on the inner side of the connecting groove 35, and the abutment surface 351 gradually tilts toward the inside from top to bottom; when the connecting arm 24 is assembled in the connecting groove 35, the supporting surface 243 of the connecting arm 24 cooperates with the abutment surface 351 of the connecting groove 35, which can limit the displacement of the connecting shell 20 in the vertical direction, thereby limiting the height adjustment range of the pulley body 10, avoiding excessive adjustment, and avoiding deformation of the connecting shell 20 and the adjusting screw 40.

[0043] Compared with the prior art, the pulley with an anti-drop adjusting screw involved in the utility model comprises a pulley body 10, a connecting shell 20, an anti-dropping block 30 and an adjusting screw 40; specifically, a connecting shaft 21 is arranged on the connecting shell 20, and an inclined hole 11 is arranged on the pulley body 10. Through the cooperation between the connecting shaft 21 and the inclined hole 11, the height adjustment of the pulley body 10 can be achieved by twisting the adjusting screw 40. The adjustment is convenient and suitable for doors and windows of various sizes; in addition, an anti-dropping block 30 is arranged, and a limiting protrusion 32 is arranged in the anti-dropping block 30 to prevent the adjusting screw 40 from falling off during the installation and adjustment process; in addition, the anti-dropping block 30 is provided with a receiving groove 31 with an opening at the upper end, and the adjusting screw 40 can vertically enter the receiving groove 31. There is no need to disassemble the doors and windows to adjust the height of the pulley body 10, which saves time and effort.

[0044] The above only expresses the preferred technical solution of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and the utility model is also intended to include these modifications and modifications.

Claims

1. A pulley with an anti-drop adjustment screw, characterized in that: The invention comprises a pulley body, a connecting shell assembled on the outside of the pulley body, an anti-dropping block connected to one end of the connecting shell, and an adjusting screw arranged in the anti-dropping block and connected to the pulley body at one end; the anti-dropping block is provided with a receiving groove, the adjusting screw is arranged in the receiving groove, a limiting protrusion is provided on the inner side of the receiving groove, and the limiting protrusion is used to prevent the adjusting screw from escaping from the receiving groove; the pulley body is provided with an inclined hole, and a connecting shaft inserted into the inclined hole is fixedly provided on the inner side of the connecting shell; the adjusting screw is used to drive the connecting shell to move along the length direction to realize the height adjustment of the pulley body.

2. The pulley with an anti-drop adjustment screw according to claim 1, characterized in that: A through hole is provided on one side of the anti-dropping block away from the connecting shell, and the through hole is connected to the accommodating groove.

3. The pulley with an anti-drop adjustment screw according to claim 2, characterized in that: A guide groove is provided on one side of the anti-dropping block away from the connecting shell, and the guide groove is arranged around the through hole.

4. The pulley with an anti-drop adjustment screw according to claim 1, characterized in that: Two connecting grooves are symmetrically arranged on both sides of the anti-dropping block, and one end of the connecting shell close to the anti-dropping block is provided with two connecting arms arranged with relative gaps, and the connecting arms are assembled in the connecting grooves to realize the assembly connection between the anti-dropping block and the connecting shell.

5. The pulley with an anti-drop adjustment screw according to claim 4, characterized in that: The connecting arm includes a top end surface arranged at the top of the connecting arm, a bottom end surface arranged at the bottom of the connecting arm, and a supporting surface arranged on the inner side of the connecting arm, the width of the top end surface is smaller than the width of the bottom end surface, and the supporting surface is inclined inward from top to bottom; a contact surface is provided on the inner side of the connecting groove, and the contact surface is inclined inward from top to bottom, and the contact surface is arranged corresponding to the supporting surface.

6. The pulley with an anti-drop adjustment screw according to claim 1, characterized in that: The inner side of the accommodating groove is provided with symmetrically distributed limiting parts, and the limiting parts are used to resist the head of the adjusting screw.

7. The pulley with an anti-drop adjusting screw according to claim 1, characterized in that: The pulley body comprises a support frame and a pulley block fixed on the inner side of the support frame; the connecting shell is arranged on the outer side of the support frame.

8. The pulley with an anti-drop adjusting screw according to claim 7, characterized in that: The pulley block comprises a connection seat, a pulley rotatably connected to the inner side of the connection seat, and a connection column fixed on the connection seat; two ends of the connection column penetrate the connection seat and are connected to the support frame.

9. The pulley with an anti-drop adjustment screw according to claim 7, characterized in that: A threaded connector is fixedly provided at one end of the support frame close to the anti-dropping block; and the adjusting screw is connected to the threaded connector via threads.

10. The pulley with an anti-drop adjusting screw according to claim 1, characterized in that: A connecting plate is provided at the upper end of the connecting shell, and the connecting plate is used to be connected to the structure of the door and window.

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