Anti-jumping pulley of sliding door

Abstract

The utility model discloses an anti-bouncing pulley of a sliding door. The anti-bouncing pulley comprises a shell, a guide wheel assembly, a position adjusting screw rod and a torsional spring, the shell is provided with a cavity, and the cavity is provided with a screwing piece; one end of the torsion spring abuts against the shell, and the other end of the torsion spring abuts against the guide wheel assembly. The head end of the guide wheel assembly is hinged in the cavity, and the tail end abuts against the torsion spring and extends out of the cavity. The position adjusting screw rod is connected with the rotary connecting piece, the position of the rotary connecting piece in the cavity is changed by rotating the position adjusting screw rod, the rotary connecting piece is connected with the guide wheel assembly, and the shifted rotary connecting piece abuts against the guide wheel assembly to control the inclination angle range of the guide wheel assembly. The device has the advantages of simple structure, compact matching, reasonable design and the like; therefore, the device is a product with excellent technical and economical performance.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to a sliding door anti-jumping pulley.

BACKGROUND TECHNIQUE

[0002] With the price rise, the door is made more and more light now, when pushing and pulling the door, because there is always a gap between the door and the upper rail, so the door is particularly easy to jump the rail, and it can cause the damage of the door panel, in order to prevent the door body from moving and jumping the rail, we propose a sliding door anti-jumping pulley scheme.

UTILITY MODEL CONTENTS

[0003] In order to solve at least one of the above problems, the utility model provides a new structure scheme, and the sliding door anti-jumping pulley adopts the following technical scheme:

[0004] A sliding door anti-jumping pulley, it includes casing, guide pulley assembly, position adjusting screw, torsional spring;

[0005] The cavity is provided with a threaded part, one end of the torsional spring abuts against the casing, and the other end abuts against the guide pulley assembly;The leading end of the guide pulley assembly is hinged in the cavity, and the trailing end is abutted and stretched out of the cavity by the torsional spring;The position adjusting screw is connected with the threaded part, the position of the threaded part in the cavity is changed by rotating the position adjusting screw, and the threaded part is connected with the guide pulley assembly, and the shifted threaded part controls the inclination angle range of the guide pulley assembly by abutting against the guide pulley assembly.

[0006] Preferably, the guide pulley assembly comprises an arm and a guide pulley, the leading end of the arm is hinged in the cavity, and the guide pulley is installed at the trailing end of the arm and freely rotates at the trailing end, and the torsional spring abuts against the leading end of the arm.

[0007] Preferably, the arm has a cavity, and the torsional spring is installed in the cavity;The casing is provided with a shaft, a first limiting column and a second limiting column, the shaft penetrates the leading end of the arm and the torsional spring at the same time, so that the guide pulley assembly and the torsional spring are hinged.

[0008] Preferably, the threaded part is cylindrical, the arm is provided with an arc-shaped recess, and the threaded part is connected to the recess to change the inclination angle of the guide pulley assembly by the threaded part.

[0009] Preferably, the left end, the right end and the bottom end of the casing are open, and the trailing end of the guide pulley assembly extends out of the left end and the bottom end of the casing;The top end of the casing extends a convex part into the cavity for the torsional spring to abut against.

[0010] Preferably, the right end of the casing is provided with a frame, the frame is an integral structure, the frame comprises a bottom, a first side and a second side, the first side and the second side are located at both ends of the bottom respectively, and the first side and the second side are both provided with a connecting hole for connecting the position adjusting screw.

[0011] Preferably, the top end of the cavity extends a socket out of the cavity, and the first side portion and the second side portion of the frame member fitted into the cavity are located at two sides of the socket respectively.

[0012] Preferably, the position adjusting screw includes a first position adjusting screw and a second position adjusting screw, the first position adjusting screw is connected to the screw joint through the first side portion and the socket, and the second position adjusting screw is connected to the screw joint through the second side portion and the socket.

[0013] Preferably, the first position adjusting screw and the second position adjusting screw are both provided with ring grooves, the first limiting column is connected to the ring groove of the first position adjusting screw to limit the moving range of the first position adjusting screw, and the second limiting column is connected to the ring groove of the second position adjusting screw to limit the moving range of the second position adjusting screw.

[0014] Compared with the background art, the present application has the following beneficial effects:

[0015] The sliding door anti-jumping pulley provided by the present application can extend the guide wheel assembly out of the cavity by the elastic force of the torsion spring, and keep abutting with the contact surface, so as to avoid jumping rails; meanwhile, the inclination range of the guide wheel assembly can be adjusted by the position adjusting screw, so as to adapt to different installation spaces and have wider applicability. The sliding door anti-jumping pulley has the advantages of simple structure, compact cooperation, reasonable design and the like; therefore, it is a product with superior performance in both technology and economy. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 The sliding door anti-jumping pulley provided by the present application can extend the guide wheel assembly out of the cavity by the elastic force of the torsion spring, and keep abutting with the contact surface, so as to avoid jumping rails; meanwhile, the inclination range of the guide wheel assembly can be adjusted by the position adjusting screw, so as to adapt to different installation spaces and have wider applicability. The sliding door anti-jumping pulley has the advantages of simple structure, compact cooperation, reasonable design and the like; therefore, it is a product with superior performance in both technology and economy.

[0017] Fig. 2 The sliding door anti-jumping pulley provided by the present application can extend the guide wheel assembly out of the cavity by the elastic force of the torsion spring, and keep abutting with the contact surface, so as to avoid jumping rails; meanwhile, the inclination range of the guide wheel assembly can be adjusted by the position adjusting screw, so as to adapt to different installation spaces and have wider applicability. The sliding door anti-jumping pulley has the advantages of simple structure, compact cooperation, reasonable design and the like; therefore, it is a product with superior performance in both technology and economy.

[0018] Fig. 3 The sliding door anti-jumping pulley provided by the present application can extend the guide wheel assembly out of the cavity by the elastic force of the torsion spring, and keep abutting with the contact surface, so as to avoid jumping rails; meanwhile, the inclination range of the guide wheel assembly can be adjusted by the position adjusting screw, so as to adapt to different installation spaces and have wider applicability. The sliding door anti-jumping pulley has the advantages of simple structure, compact cooperation, reasonable design and the like; therefore, it is a product with superior performance in both technology and economy. DETAILED DESCRIPTION

[0019] The embodiments of the present application will be described in detail below, and the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout.

[0020] In the present application, unless otherwise explicitly specified and limited, the terms such as "assembly", "connection" and "linkage" should be understood in a broad sense, for example, can be fixed connection, can be detachable connection, or integral connection; can be mechanical connection; can be directly connected, or connected through an intermediate medium; can be connected internally between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] The technical scheme and beneficial effects of the present application will be more apparent from the further description of the specific embodiments of the present application in conjunction with the accompanying drawings of the present application. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, but cannot be understood as limiting the present application.

[0022] The preferred embodiment of the present application provides: Figs. 1-3 As shown in the figure, a sliding door anti-jumping pulley, which comprises a shell 1, a guide pulley assembly 2, a position adjusting screw 3, a torsion spring 4;

[0023] The shell 1 has a cavity 11, the cavity 11 is provided with a threaded member 5, the threaded member 5 is pushed by the position adjusting screw 3 to move in the cavity 11; one end of the torsion spring 4 abuts against the shell 1, and the other end abuts against the guide pulley assembly 2; the leading end of the guide pulley assembly 2 is hinged in the cavity 11, and the trailing end is abutted by the torsion spring 4 to extend out of the cavity 11; the position adjusting screw 3 is connected with the threaded member 5, the position of the threaded member 5 in the cavity 11 is changed by rotating the position adjusting screw 3, and the threaded member 5 is connected with the guide pulley assembly 2, the position of the threaded member 5 is changed to control the inclination range of the guide pulley assembly 2 by abutting against the guide pulley assembly 2.

[0024] The guide pulley assembly 2 comprises a wheel arm 21 and a guide pulley 22, the leading end of the wheel arm 21 is hinged in the cavity 11, the guide pulley 22 is installed at the trailing end of the wheel arm 21 and freely rotates at the trailing end, and the torsion spring 4 abuts against the leading end of the wheel arm 21. The threaded member 5 is cylindrical, the wheel arm 21 is provided with an arc-shaped recess 23, the length of the threaded member 5 is greater than the width of the wheel arm 21, the threaded member 5 is prevented from entering the recess 24, and the threaded member 5 is connected to the recess 23 to change the inclination of the guide pulley assembly 2 by the threaded member 5.

[0025] The wheel arm 21 has a recess 24, and the torsion spring 4 is installed in the recess 24; the shell 1 is provided with a shaft 12, a first limiting column 13 and a second limiting column 14, the shaft 12, the first limiting column 13 and the second limiting column 14 all pass through the cavity 11, and the shaft 12 passes through the leading end of the wheel arm 21 and the torsion spring 4 at the same time, so that the guide pulley assembly 2 and the torsion spring 4 are hinged.

[0026] The left end 15, the right end 16 and the bottom end 17 of the shell 1 are open, and the ends of the guide wheel assembly 2 extend from the left end 15 and the bottom end 17 of the shell 1; the top end of the shell 1 extends a protrusion 18 into the cavity 11 for the torsion spring 4 to abut against. The right end 16 of the shell 1 is provided with a frame 6, which is a one-piece structure, and the frame 6 includes a bottom part 61, a first side part 62 and a second side part 63. The follow-up wheel 64 is mounted on the bottom part 61 and is in a free rotation state to cooperate with rolling, and the follow-up wheel 64 is located outside the cavity 11. The first side part 62 and the second side part 63 are respectively located at both ends of the bottom part 61, and the first side part 62 and the second side part 63 are both provided with an access hole 65 for connecting the positioning screw 3. The length of the first side part 62 is greater than the length of the second side part 63 to form a height difference, which facilitates the connection of the first positioning screw 31 and the second positioning screw 32 arranged in an up-down manner. The access hole of the second side part 63 is provided with a thread. The top end of the cavity 11 extends an access seat 19 into the cavity 11, and the access seat is provided with a through hole for the positioning screw to access. The first side part 62 and the second side part 63 of the frame 6 installed in the cavity 11 are respectively located on both sides of the access seat 19. The cavity 11 is provided with a guide groove 33, and the second side part 63 extends a sliding part 34 which is connected with the guide groove 33 to control the movement track of the frame 6.

[0027] The positioning screw 3 includes a first positioning screw 31 and a second positioning screw 32. The first positioning screw 31 passes through the first side part 62 and the access seat 19 to be connected to the rotating part 5. The second positioning screw 32 passes through the second side part 63 and the access seat 19 to install the frame 6 in the shell 1. The first positioning screw 31 and the second positioning screw 32 are both provided with a ring groove 35. The first limiting column 13 is connected with the ring groove 35 of the first positioning screw 31 to limit the movement range of the first positioning screw 31. The second limiting column 14 is connected with the ring groove 35 of the second positioning screw 32 to limit the movement range of the second positioning screw 32.

[0028] Action flow: Rotate the second positioning screw 32 to move the position of the frame 6 in the cavity 11 through the cooperation of the second positioning screw 32 and the access hole 65 of the second side part 63, so as to adjust the position of the follow-up wheel 64. Since the torsion spring 4 abuts against the shell 1 and the guide wheel assembly 2 respectively, the end roller of the guide wheel assembly 2 is kept outside the cavity 11 under the elastic force of the torsion spring 4. The first positioning screw 31 is connected to the rotating part 5, and the position of the rotating part 5 can be changed by rotating the first positioning screw 31, so that the rotating part 5 contacts different positions of the recess 23, thereby adjusting the inclination range of the guide wheel assembly 2 to adapt to different installation spaces.

[0029] In the description of the specification, the description of the terms "one embodiment", "preferably", "example", "specific example" or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model, and the illustrative description of the above terms in the specification does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. Through the description of the above structure and principle, those skilled in the art should understand that the utility model is not limited to the above specific embodiments, and improvements and replacements of the technology known in the art based on the utility model fall within the protection scope of the utility model, which should be limited by each claim.

Claims

1. A sliding door anti-jump pulley, characterized by: It includes a shell, a guide wheel assembly, a position adjusting screw and a torsion spring. The shell has a cavity, the cavity is provided with a threaded part, one end of the torsion spring abuts against the shell, and the other end abuts against the guide wheel assembly, the leading end of the guide wheel assembly is hinged in the cavity, and the trailing end of the guide wheel assembly extends out of the cavity under the abutment of the torsion spring, the position adjusting screw is connected with the threaded part, the position of the threaded part in the cavity is changed by rotating the position adjusting screw, and the threaded part is connected with the guide wheel assembly, the abutment of the displaced threaded part with the guide wheel assembly controls the inclination range of the guide wheel assembly.

2. A sliding door anti-jump pulley as claimed in claim 1, wherein: The guide wheel assembly includes a wheel arm and a guide wheel, the leading end of the wheel arm is hinged in the cavity, and the guide wheel is installed at the trailing end of the wheel arm and freely rotates at the trailing end, and the torsion spring abuts against the leading end of the wheel arm.

3. A sliding door anti-jump pulley as claimed in claim 2, wherein: The wheel arm has a concave cavity, and the torsion spring is installed in the concave cavity, the shell is provided with a shaft, a first limiting column and a second limiting column, and the shaft penetrates the leading end of the wheel arm and the torsion spring at the same time, so that the guide wheel assembly and the torsion spring are hinged.

4. A sliding door anti-jump pulley as claimed in claim 2, wherein: The threaded part is in a cylindrical shape, the wheel arm is provided with an arc-shaped recess, and the threaded part is connected to the recess to change the inclination of the guide wheel assembly through the threaded part.

5. A sliding door anti-jump pulley as claimed in claim 1, wherein: The left end, the right end and the bottom end of the shell are open, and the trailing end of the guide wheel assembly extends out of the left end and the bottom end of the shell, and the top end of the shell extends a convex part into the cavity for the abutment of the torsion spring.

6. A sliding door anti-jump pulley as claimed in claim 3, wherein: The right end of the shell is provided with a frame, the frame is in an integral structure, the frame includes a bottom, a first side and a second side, the first side and the second side are located at two ends of the bottom, and the first side and the second side are both provided with a connecting hole for connecting the position adjusting screw.

7. A sliding door anti-jump pulley as claimed in claim 6 wherein: The top end of the cavity extends a connecting seat into the cavity, and the first side and the second side of the frame installed in the cavity are located at two sides of the connecting seat.

8. A sliding door anti-jump pulley as claimed in claim 7, wherein: The position adjusting screw includes a first position adjusting screw and a second position adjusting screw, the first position adjusting screw penetrates the first side and the connecting seat and is connected to the threaded part, and the second position adjusting screw penetrates the second side and the connecting seat.

9. A sliding door anti-jump pulley as claimed in claim 8, wherein: The first position adjusting screw and the second position adjusting screw are both provided with a ring groove, the first limiting column is connected with the ring groove of the first position adjusting screw to limit the movement range of the first position adjusting screw, and the second limiting column is connected with the ring groove of the second position adjusting screw to limit the movement range of the second position adjusting screw.

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