CN209742588U - a pulley assembly - Google Patents

Abstract

The utility model discloses a pulley assembly which is used for connecting a door leaf and enabling the door leaf to slide along a slide rail and comprises a spiral arm, a pulley, a fixed seat and a torsional spring; one end of the rotary arm is hinged with a pulley, and the other end of the rotary arm is hinged with the fixed seat; two ends of the torsion spring respectively act on the spiral arm and the fixed seat; the fixed seat is fixedly connected to the side face of the door leaf. By adopting the pulley assembly with the structure, the torsion spring applies force to the rotating arm, and the rotating arm swings to be converted into the movement of the pulley in the vertical direction, so that the size of the pulley assembly is reduced, the pulley assembly can be pre-installed on the door leaf, and the installation efficiency is improved.

Description

a pulley assembly

technical field

The utility model relates to the technical field of pulley equipment, in particular to a pulley assembly.

Background technique

In the scene where doors, cabinet doors, shower doors or other similar objects are used as partitions, in order to improve the efficiency of space utilization, sliding doors that move in a single direction are generally used, and the sliding doors are equipped with pulleys. Slide rails are installed on the frame, and after the pulleys are installed in the slide rails, the pulleys can move along the slide rails, thereby driving the door leaf to move. The existing sliding door leaves are generally equipped with two sets of pulleys at the top and bottom. In order to facilitate installation, a compression spring is usually installed in the bottom pulley. It is too large to be pre-installed on the door leaf, which reduces the efficiency and simplicity of installation.

Utility model content

The purpose of the utility model is to overcome the above-mentioned defects or problems in the background technology, and provide a pulley assembly to solve the problem that the existing pulley assembly cannot be pre-installed due to its large volume, thereby reducing the installation efficiency.

In order to achieve the above object, the utility model adopts the following technical solutions:

The first technical solution: a pulley assembly used to connect the door leaf and make the door leaf slide along the slide rail, including a swing arm, a pulley, a fixed seat and a torsion spring; one end of the swing arm is hinged with a pulley, and the other end is connected to the fixed The seat is hinged; the two ends of the torsion spring respectively act on the swing arm and the fixed seat; the fixed seat is fixedly connected to the side of the door leaf.

On the basis of the first technical solution, there is also a second technical solution: it also includes a rotating shaft and a first knob; the fixed base is provided with a shaft sleeve, and the shaft sleeve is used to penetrate the door leaf; the rotating shaft penetrates and is rotatably connected On the shaft sleeve, one end of the rotating shaft is in rotation-stop connection with the swing arm, and the other end is in-rotation connection with the first knob.

On the basis of the first technical solution, there is a third technical solution: it also includes a rotating shaft, a limiter and a second knob, and the fixed seat is provided with a shaft sleeve, and the shaft sleeve is used to penetrate the door leaf; the rotating shaft Through and rotatably connected to the bushing, one end of the rotating shaft is in rotation-stop connection with the swing arm, and the other end is in-rotation connection with the second knob; One of the second knobs is provided with a limiting projection, and the other is provided with a groove for allowing the second knob to rotate at a preset angle.

On the basis of the second and third technical solutions, further, the fixed seat includes a shaft sleeve and a locking piece, the shaft sleeve is arranged on the shaft sleeve, and the locking piece is installed after the shaft sleeve passes through the door leaf Screwed with the shaft sleeve.

Further, the shaft sleeve is provided with anti-rotation protrusions, and the anti-rotation protrusions are used for anti-rotation connection with the door leaf after the shaft sleeve passes through the door leaf.

Further, the swing arm is provided with a first socket, the inner wall of the sleeve is provided with a second socket, the torsion spring is sleeved on the rotating shaft and its two ends are respectively inserted into the first socket and the second socket .

Further, the inside of the sleeve is a stepped hole, and the rotating shaft is provided with a stepped seat matching the stepped hole, and the stepped hole cooperates with the stepped seat to limit the movement of the rotating shaft toward the position of the arm; the rotating shaft One end is screwed to the arm.

Further, an insertion slot is provided at one end of the rotation shaft that is non-rotatably connected to the first knob or the second knob, and a plug joint that matches the insertion slot is provided on the first knob or the second knob, so that The above-mentioned plug-in groove cooperates with the plug-in connector to prevent rotation.

From the above description of the utility model, it can be known that, compared with the prior art, the utility model has the following beneficial effects:

1. By applying force to the swing arm through the torsion spring, the swing of the swing arm is transformed into the vertical movement of the pulley, which reduces the volume of the pulley assembly and can be pre-installed on the door leaf, improving the installation efficiency.

2. Make the shaft sleeve run through the door leaf, and use the first knob on one side of the door leaf to control the swing of the swing arm through the rotating shaft, which facilitates installation and disassembly.

3. Set the limit piece so that the second knob can only rotate within a certain angle range, control the swing range of the swing arm, and then control the moving range of the pulley. When the second knob engages with the limit piece, the pulley is not easy to move from The breakout in the slide rail improves the stability of the pulley in the slide rail, while the preset range of movement allows the pulley to pass through easily even if it touches a foreign object in the slide rail.

4. The fixed seat includes a shaft kit and a locking piece, and the locking piece is screwed and fixed with the shaft sleeve after the shaft sleeve of the shaft kit passes through the door leaf, so as to fix the pulley assembly on the door leaf.

5. The shaft kit is provided with anti-rotation protrusions, which cooperate with the door leaf so that when the fixing seat is fixed on the door leaf, it will not rotate with the rotation of the first knob or the second knob.

6. The first socket and the second socket for the installation of the torsion spring are arranged on the swing arm and the shaft sleeve to fix the torsion spring.

7. The shaft sleeve and the rotating shaft are provided with matching step holes and step seats, and one end of the rotating shaft is screwed to the spiral arm, so that the rotating shaft will not slide relative to the shaft sleeve after passing through the shaft sleeve, thereby maintaining the overall stability of the pulley assembly.

8. The plug joint and the plug slot are provided, and the rotating shaft is connected to the first knob or the second knob in a non-rotational manner by plugging, so that the first knob or the second knob can be easily disassembled or installed.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are some embodiments of the utility model. For those skilled in the art, other drawings can also be obtained based on these drawings without creative efforts.

Fig. 1 is the structural representation 1 of the utility model embodiment one;

Fig. 2 is the structural representation 2 of embodiment one in Fig. 1;

Fig. 3 is the structural representation of the second embodiment of the utility model;

Fig. 4 is a schematic structural view of the shaft sleeve, the first fastener and the first knob in Fig. 3;

Fig. 5 is a structural schematic diagram of a third embodiment of the utility model;

Fig. 6 is a structural schematic view of the bushing, the stopper, the second fastener and the second knob in Fig. 5 .

Explanation of main reference signs:

1, swing arm; 11, first jack; 2, pulley; 3, torsion spring; 41, shaft kit; 411, shaft sleeve; 412, hinged shaft; 413, second jack; 42, locking piece; 421, Screw; 43, rear cover; 5, rotating shaft; 51, socket slot; 61, first knob; 62, second knob; 63, plug connector; 64, limit protrusion; 7, limit piece; 71, concave Groove; 8, anti-rotation protrusion.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are preferred embodiments of the present invention, and should not be regarded as excluding other embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the claims, description and above-mentioned drawings of the present utility model, unless otherwise clearly defined, such as the use of the terms "first", "second" or "third", etc., are for the purpose of distinguishing different objects, rather than using to describe a specific order.

In the claims, description and above-mentioned drawings of the present utility model, unless otherwise clearly defined, for orientation words, such as using the terms "center", "horizontal", "longitudinal", "horizontal", "vertical", "top ", "Bottom", "Inner", "Outer", "Up", "Down", "Front", "Back", "Left", "Right", "Clockwise", "Counterclockwise" and other directions Or the positional relationship is based on the orientation and positional relationship shown in the drawings, and is 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 orientation or be configured in a specific orientation and operation, so it should not be construed as limiting the specific protection scope of the present invention.

In the claims, description and above-mentioned drawings of the utility model, unless otherwise clearly defined, if the term "fixed" or "fixed connection" is used, it should be understood in a broad sense, that is, there is no displacement relationship and relative rotation between the two. Any way of connection, that is to say, includes non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

In the claims, description and above-mentioned drawings of the present utility model, if the terms "comprising", "having" and their variants are used, it is intended to mean "including but not limited to".

Referring to Fig. 1 and Fig. 2, Fig. 1 and Fig. 2 show a schematic structural view of Embodiment 1 provided by the utility model, including a swing arm 1, a pulley 2, a torsion spring 3 and a fixing seat.

The fixed seat includes a shaft sleeve 41, a locking member 42 and a cover body 43. The shaft sleeve 41 is provided with a shaft sleeve 411, and a hinge shaft 412 is inserted in the shaft sleeve 411. The hinge shaft 412 is connected to the shaft sleeve 411 in a fixed rotation. There is a threaded hole in the center of the shaft 412, the screw 421 is screwed to the hinge shaft 412 and the lock piece 42 is fixedly connected to the shaft sleeve 41, the cover 43 is set on the lock piece 42; the torsion spring 3 is set on the hinge shaft 412 , the two ends of the torsion spring 3 are respectively inserted into the first socket 11 on the swing arm 1 and the second socket 413 on the shaft sleeve 41; The other end of 1 is hinged with pulley 2.

The shaft sleeve 411 of the shaft sleeve 41 runs through the door leaf, and the fixing seat is integrally fixed on the door leaf by locking the shaft sleeve 41 with the locking member 42 .

Referring to FIG. 3 , FIG. 3 shows a schematic structural diagram of Embodiment 2 provided by the present invention, including a swing arm 1 , a pulley 2 , a torsion spring 3 , a fixed seat, a rotating shaft 5 and a first knob 61 .

Fixing seat comprises axle sleeve 41 and locking piece 42, is provided with axle sleeve 411 on axle sleeve 41, is provided with screw thread on axle sleeve 411, and locking piece 42 is the circular ring that is provided with screw thread on inner wall, and locking piece 42 and axle sleeve 411 is screwed and fixed; shaft sleeve 41 is also provided with anti-rotation protrusion 8, and when shaft sleeve 411 runs through the door leaf, this anti-rotation protrusion 8 matches with the gap on the door leaf, so that shaft sleeve 41 anti-rotation is fixedly connected to For the door leaf, the locking member 42 reinforces the fixing seat from the other side of the door leaf.

A rotating shaft 5 is inserted into the shaft sleeve 411, and the rotating shaft 5 is rotationally connected with the shaft sleeve 41. The inside of the shaft sleeve 411 is a stepped hole, and the rotating shaft 5 is provided with a stepped seat matching the stepped hole. When the rotating shaft 5 is inserted into the shaft sleeve 411, it is It is limited that it cannot move in the axial direction of the shaft sleeve in the direction towards the swing arm; the shaft 5 is hollow in the axial direction, and the inside is provided with threads, and one end of the swing arm 1 is provided with a perforation, and a bolt passes through the perforation and is screwed with the rotation shaft 5 to screw the screw. The arm 1 is fixedly connected to the rotating shaft 5; the other end of the rotating shaft 5 is provided with an insertion slot 51, as shown in Figure 4, a plug connector 63 is provided on the inner bottom surface of the first knob 61, and the plug connector 63 is matched with the insertion slot 51 and placed in the After the two are plugged together, they stop rotating.

A second socket 413 is provided on the inner side wall of the shaft sleeve 411, a first socket 11 is provided on the swing arm 1, the torsion spring 3 is sleeved on the rotating shaft 5 and the two ends are inserted into the first socket 11 and the second socket respectively. Two jacks 413 .

The inner side wall of the first knob 61 is provided with a rib, and the outer peripheral edge of the locking member 42 is also provided with a rib. When a knob 61 is sheathed on the locking member 42 , the plug connector 63 is plugged into the plug slot 51 .

One end of the swing arm 1 is hinged with a pulley 2 .

Referring to FIG. 5 , FIG. 5 shows a schematic structural view of Embodiment 3 provided by the present invention, which differs from Embodiment 2 in that it also includes a limiting member 7 and a second knob 62 .

The limiter 7 is a ring structure, with a plurality of grooves 71 uniformly arranged on the outer periphery, and anti-rotation protrusions 8 are provided on the side wall. The limiter 7 is set on the shaft sleeve 411 and is located on the door leaf and the lock 42, the anti-rotation protrusion 8 on the limiter 7 matches the gap on the door leaf.

As shown in Figure 6, compared with the second embodiment, the second knob 62 replaces the first knob 61, and the inner side wall of the second knob 62 is evenly provided with a limit protrusion 64, and the second knob 62 is sleeved on the lock. When the firmware 42 is on, the limit protrusion 64 is inserted into the groove 71, and the distance between the two ends of the groove 72 is greater than the width of the limit protrusion 81, so that the second knob 62 can rotate within a certain range , in this embodiment, after the second knob 62 is inserted into the limiting member 7, it can rotate within a range of 5°.

The assembly process of the pulley assembly provided by Embodiment 1 is as follows: hinge the pulley 2 on one end of the swing arm 1, then pass the hinge shaft 412 through one end of the swing arm 1, and set the torsion spring 3 on the hinge shaft 412 , the hinge shaft 412 is inserted into the shaft sleeve 411, and at the same time, the two ends of the torsion spring 3 are respectively inserted into the first socket 11 and the second socket 413, and then the shaft sleeve 41 is inserted through the opening on the door leaf, and then the lock is screwed with the screw 421. The fastener 42 is screwed to the hinge shaft 412 to fix the fixing seat to the door leaf, and finally the cover 43 covers the locking member 42 .

The assembly process of the pulley assembly provided by Embodiment 2 is as follows: hinge the pulley 2 to one end of the swing arm 1, insert the rotating shaft 5 into the bushing 411, then set the torsion spring 3 on the rotating shaft 5, and simultaneously place the torsion spring 3 One end of the torsion spring 3 is inserted into the second shaft hole 413, and then one end of the swing arm 1 is fixedly connected to one end of the rotating shaft 5 through a bolt, and at the same time, one end of the torsion spring 3 is inserted into the first shaft hole 11, and then the shaft sleeve 41 is penetrated. The opening on the door leaf, and then the locking member 42 and the shaft sleeve 41 are screwed and fixed, so that the fixing seat is fixed to the door leaf, and finally the plug joint 63 on the first knob 61 is aligned with the insertion slot 51 on the rotating shaft 5. Set on the locking piece 42.

The difference between the assembly process of the pulley assembly provided in Embodiment 3 and the assembly process of the pulley assembly provided in Embodiment 2 is that after the shaft sleeve 41 passes through the opening on the door leaf, the limiter 7 is set on the shaft sleeve 411, and make the anti-rotation protrusion 8 on the limiter 7 match the gap on the door leaf, then screw the lock piece 42 and the shaft sleeve 41 and fix it, and then fix the value of the door leaf with the fixed seat, and finally turn the second knob After the plug joint 63 on the shaft 5 is aligned with the slot 51 on the rotating shaft 5 , the second knob 62 is sleeved on the locking member 42 , and at the same time, the limiting protrusion 64 is matched with the groove 71 .

In specific use, after the pulley assembly provided in Embodiment 1 is pre-installed on the door leaf, in the actual installation process, it is only necessary to press the pulley 2 to a proper position, so that the swing arm 1 swings and the torsion spring 3 stores potential energy , and then snap the pulley 2 into the slide rail, and release the pulley 2 at the same time, the pulley 2 bounces up against the top of the slide rail under the action of the torsion spring 3, and the installation can be completed. The pulley assembly provided in this embodiment only needs to press the pulley 2 to a proper position and snap it into the slide rail during the installation process. The installation method is simple and convenient, and the installation efficiency is improved.

The difference between the pulley assembly provided by Embodiment 2 and the pulley assembly provided by Embodiment 1 in the installation process is that there is no need to press the pulley 2, and only need to turn the first knob 61 to drive the rotating shaft 5 to rotate and then drive the swing arm 1 swing to lower the pulley 2 to an appropriate position, then snap the pulley 2 into the slide rail, loosen the first knob 61, and the pulley 2 will bounce up against the top of the slide rail under the action of the torsion spring 3, and then finish installation. The pulley assembly provided by this embodiment can lower the pulley 2 to an appropriate position through the action of the first knob 61 during the installation process, and can be operated on the outside of the door leaf to avoid the pulley 2 being too close to the slide rail or the door leaf Causes a problem that is difficult to operate, and further improves installation efficiency.

The difference between the pulley assembly provided in Embodiment 3 and the pulley assembly provided in Embodiment 1 in the installation process is that the second knob 62 needs to be removed before installation, and then the pulley 2 should be pressed to an appropriate position and The pulley 2 is snapped into the slide rail, and at the same time, the pulley 2 is released to make the pulley 2 pop up, and then the second knob 62 is installed on the limiting member 7 . The pulley assembly provided in this embodiment, after the second knob 62 is installed on the limiting member 7, can limit the swing range of the swing arm 1, and then limit the moving range of the pulley, so that the pulley will not escape from the slide rail.

In addition to the above-mentioned advantages, the pulley assembly provided by the utility model has a smaller volume than the existing pulley assembly, so that it can be pre-installed on the door leaf, thereby facilitating the actual installation. At the same time, the pulley is arranged on the side of the door leaf, so that the pulley can be blocked and hidden by the door leaf after being engaged in the slide rail, thereby improving the overall aesthetics of the pulley assembly.

The above specification and description of the embodiments are used to explain the protection scope of the present utility model, but do not constitute a limitation to the protection scope of the present utility model. Through the enlightenment of the utility model or the above-mentioned embodiments, those of ordinary skill in the art can obtain the understanding of the utility model through logical analysis, reasoning or limited experiments in combination with common knowledge, common technical knowledge in the field and/or prior art. The modifications, equivalent replacements or other improvements of the embodiments or some of the technical features thereof shall be included in the protection scope of the present utility model.

Claims (8)

1. A pulley assembly, which is used to connect the door leaf and make the door leaf slide along the slide rail, is characterized in that it includes a swing arm, a pulley, a fixed seat and a torsion spring; One end of the swing arm is hinged with a pulley, and the other end is hinged with the fixed seat; the two ends of the torsion spring respectively act on the swing arm and the fixed seat; the fixed seat is fixedly connected to the side of the door leaf. 2. A pulley assembly according to claim 1, further comprising a rotating shaft and a first knob; said fixed seat is provided with a bushing, said bushing is used to penetrate through the door leaf; said rotating shaft penetrates and Rotationally connected to the shaft sleeve, one end of the rotating shaft is connected in rotation with the swing arm, and the other end is connected in rotation with the first knob. 3. A pulley assembly as claimed in claim 1, further comprising a rotating shaft, a stopper and a second knob, the fixed seat is provided with a bushing, and the bushing is used to pass through the door leaf; The rotating shaft passes through and is rotatably connected to the bushing, one end of the rotating shaft is connected to the rotating arm in a fixed manner, and the other end is connected to the second knob in a fixed rotation; the limiting member is fixedly connected to the fixed seat, One of the part or the second knob is provided with a limiting protrusion, and the other is provided with a groove for allowing the second knob to rotate at a preset angle. 4. A pulley assembly as claimed in claim 2 or 3, characterized in that, said fixing seat comprises a shaft sleeve and a locking piece, said shaft is sleeved on the shaft sleeve, said locking piece is mounted on said shaft After the sleeve passes through the door leaf, it is screwed with the shaft sleeve. 5. A pulley assembly according to claim 4, characterized in that, the shaft sleeve is provided with a detent protrusion, and the detent protrusion is used to stop with the door leaf after the shaft sleeve passes through the door leaf. to connect. 6. A pulley assembly as claimed in claim 5, characterized in that a first insertion hole is provided on the swing arm, a second insertion hole is provided on the inner side wall of the bushing, and the torsion spring is sleeved on the The two ends of the rotating shaft are respectively inserted into the first jack and the second jack. 7. A pulley assembly as claimed in claim 6, wherein the inside of the bushing is a stepped hole, the rotating shaft is provided with a stepped seat matching the stepped hole, and the stepped hole and the stepped seat The cooperation limits the movement of the rotating shaft toward the position of the swing arm; one end of the rotating shaft is screwed to the swing arm. 8. A pulley assembly according to claim 7, characterized in that, one end of the rotating shaft that is connected to the first knob or the second knob in a non-rotational manner is provided with an insertion slot, and the first knob or the second knob A plug connector matching the plug slot is provided on the top, and the plug slot cooperates with the plug connector to prevent rotation.