Height-adjustable pulley structure

Abstract

The utility model belongs to the technical field of pulleys, and particularly relates to a height-adjustable pulley structure which comprises a pulley fixing seat, a pulley moving seat, a pulley roller and an adjusting piece. The pulley fixing base is in a long strip shape, a guide inclined face is arranged on the groove bottom or / and the groove wall of a containing groove of the pulley fixing base, and the guide inclined face inclines to the depth direction of the containing groove. The pulley moving seat is arranged in the accommodating groove and forms an inclined plane matching relationship with the guide inclined plane; the pulley roller is rotatably arranged on the pulley moving seat; the adjusting piece is rotatably arranged on the pulley fixing base, abuts against the pulley moving base and is used for pushing the pulley moving base to move along the guide inclined face so as to adjust the height of the portion, stretching out of the containing groove, of the pulley rolling wheel. According to the structure in the scheme, height adjustment of the pulley and the idler wheel can be achieved, double-wheel supporting can be achieved, the supporting force is better, and portable disassembly can be achieved through the buckle structure in the middle.

Description

Technical Field

[0001] The utility model belongs to the technical field of door and window pulleys, and in particular relates to a height-adjustable pulley structure. Background Art

[0002] In the door and window market, a large number of existing sliding doors use tracks for sliding assistance, but these pulley rollers are often directly connected to the pulley seat through a rotating shaft, and the height position of the pulley rollers cannot be adjusted. When the door and window sashes are installed on the door and window frames, it is easy for the pulley rollers to have difficulty in providing reasonable support and close contact with the door and window tracks due to size errors, which in turn causes the pulley rollers to easily separate from the tracks during the sliding process of the sliding doors. This causes direct friction between the door and window sashes and the door and window frames, resulting in scratches and scratches. In more serious cases, it will affect safety during use.

[0003] For this reason, it is necessary to design a pulley structure that is convenient for height adjustment. Utility Model Content

[0004] In order to solve the above problems existing in the prior art, the present invention provides a pulley structure with adjustable height.

[0005] The technical solution adopted by the utility model is:

[0006] A pulley structure with adjustable height comprises a pulley fixing seat, a pulley moving seat, a pulley roller and an adjusting member; the pulley fixing seat is in an elongated strip shape, a receiving groove is arranged in the middle part of the pulley fixing seat, a guiding inclined surface is arranged on the groove bottom and / or groove wall of the receiving groove, and the guiding inclined surface is inclined to the depth direction of the receiving groove; the pulley moving seat is arranged in the receiving groove and forms an inclined surface matching relationship with the guiding inclined surface; the pulley roller is rotatably arranged on the pulley moving seat; the adjusting member is rotatably arranged on the pulley fixing seat and abuts against the pulley moving seat, and is used for pushing the pulley moving seat to move along the guiding inclined surface to adjust the height of the pulley roller extending out of the receiving groove.

[0007] As an alternative or supplement to the above pulley structure: a sliding shaft is provided in the middle of the pulley moving seat, and the sliding shaft forms an inclined plane matching relationship with the guiding inclined plane.

[0008] As an alternative or supplement to the above pulley structure: an inclined block is provided at the bottom of the accommodating groove, one side of the inclined block forms the guiding inclined surface, and the middle part of the sliding shaft contacts the guiding inclined surface on the inclined block.

[0009] As an alternative or supplement to the above pulley structure: a second shaft groove is provided on the side wall of the accommodating groove, the groove wall on one side of the second shaft groove is inclined and forms a guiding inclined surface, and the end of the sliding shaft contacts the guiding inclined surface of the second shaft groove.

[0010] As an alternative or supplement to the above pulley structure: the pulley roller is rotatably connected to the pulley moving seat via a pulley shaft.

[0011] As an alternative or supplement to the above pulley structure: a first shaft groove is arranged on the side wall of the accommodating groove, the groove wall on one side of the first shaft groove is inclined and forms a guiding inclined surface, and the end of the pulley shaft contacts the guiding inclined surface of the first shaft groove.

[0012] As an alternative or supplement to the above-mentioned pulley structure: a locking component is fixedly connected to the pulley fixing seat, and the locking component is U-shaped or J-shaped. A limiting inclined groove is arranged on the inner side of the locking component, and the groove surface of the limiting inclined groove abuts against the sliding shaft and limits the pulley moving seat from the guide inclined surface.

[0013] As an alternative or supplement to the above-mentioned pulley structure: a U-shaped groove is provided at the end of the locking member; the side arms on both sides of the U-shaped groove can move closer to or away from each other, a limiting hook is provided on the side of the end of the side arm facing away from the U-shaped groove, and a limiting protrusion is provided on the other side of the middle part of the side arm; a square hole is provided at the bottom of the groove of the pulley fixing seat, and when the end of the locking member is inserted into the square hole, the limiting hook cooperates with the limiting protrusion to realize the locking of the end of the locking member.

[0014] As an alternative or supplement to the above pulley structure: the adjusting member adopts an adjusting screw, the tip of which abuts against the U-shaped pulley moving seat; when the adjusting screw is rotated, the pulley moving seat can be pushed to move in the accommodating groove.

[0015] As an alternative or supplement to the above pulley structure: an insert block is provided on the pulley fixing seat, the insert block is threadably matched with the adjusting screw, and the height of the insert block is adjustable.

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

[0017] 1. Two pulley seats are used in this scheme. The pulley movable seat can be adjusted in height relative to the pulley fixed seat, so as to facilitate the height adjustment of the pulley roller. In actual use, the pulley roller can be matched with the corresponding door and window track by adjusting the height of the pulley roller;

[0018] 2. Since the two pulley rollers in this solution are installed on the pulley seat of the movable pulley seat, and the fixed pulley seat is often directly fixed on the door and window sashes, even after installation, the pulley rollers and the door and window tracks cannot form reasonable support and close contact due to size errors. The height between the two pulley seats can be adjusted to achieve the fit between the pulley rollers and the door and window tracks, so that the pulley rollers are not likely to separate from the tracks during the pushing and pulling process of the sliding door, reducing direct friction, scratches and scratches between the door and window sashes and the door and window frames, thereby ensuring the safety of the sliding door during use.

[0019] 3. This solution can provide support force at three locations, such as the shaft groove and the limit inclined groove, thereby improving the support effect;

[0020] 4. The structural design of the lock card can be convenient for disassembly, so that the pulley structure in this solution can still be easily disassembled after assembly, which is convenient for replacement of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below.

[0022] Figure 1 It is a three-dimensional structural diagram of the pulley structure in this scheme;

[0023] Figure 2 It is the exploded structural diagram of the pulley structure in this scheme.

[0024] Figure 3 It is a cross-sectional structural diagram of the pulley structure in this scheme;

[0025] Figure 4 It is a detailed structural diagram of the lock card in this solution.

[0026] In the figure: 1-adjusting screw; 2-pulley fixing seat; 21-accommodating groove; 22-first shaft groove; 23-second shaft groove; 24-oblique block; 3-insertion block; 4-pulley moving seat; 5-locking card; 51-limiting oblique groove; 52-limiting protrusion; 53-U-shaped groove; 54-limiting hook; 6-pulley roller; 7-sliding shaft; 8-pulley shaft. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings to clearly and completely describe the technical solution in this embodiment. The described embodiments are only part of the embodiments, not all of them. Based on the embodiments in this solution, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of this solution. The up, down, left, and right directions in this embodiment are all referenced to the directions shown in the accompanying drawings, and are not specifically limited.

[0028] Example 1

[0029] like Figures 1 to 4 As shown, this embodiment designs a pulley structure with adjustable height, including a pulley fixing seat 2, a pulley moving seat 4, a pulley roller 6 and an adjusting member. The up, down, left and right directions of this embodiment are all referred to

[0030] The pulley fixing seat 2 is in the shape of an elongated strip, and connecting ears are provided at the left and right ends of the pulley fixing seat 2, so as to facilitate the connection and fixation of the pulley fixing seat 2 with external components by screws. A receiving groove 21 is provided in the middle of the pulley fixing seat 2, and the receiving groove 21 is also a long strip groove. A guiding inclined surface is provided at one or more positions of the pulley. Specifically, the guiding inclined surface can be provided on the groove bottom or / and groove wall of the receiving groove 21, and an inclined block 24 is provided at the groove bottom of the receiving groove 21, and one side of the inclined block 24 forms the guiding inclined surface, and a second shaft groove 23 is provided on the side wall of the receiving groove 21, and the groove wall on one side of the second shaft groove 23 is inclined and forms a guiding inclined surface, and a first shaft groove 22 is provided on the side wall of the receiving groove 21, and the groove wall on one side of the first shaft groove 22 is inclined and forms a guiding inclined surface. The guiding inclined surface is inclined in the depth direction of the receiving groove 21, and the inclined lower end of the guiding inclined surface is close to the groove bottom of the receiving groove 21, and the inclined lower end of the guiding inclined surface is close to the notch of the receiving groove 21.

[0031] A hollow hole may be provided at the bottom of the pulley fixing seat 2 , so as to facilitate the installation of the pulley moving seat 4 and reduce the weight of the pulley fixing seat 2 .

[0032] The pulley movable seat 4 is U-shaped and is arranged in the receiving groove 21 of the pulley fixed seat 2. The pulley movable seat 4 can form an inclined surface matching relationship with the guide inclined surface, so that when the pulley movable seat 4 is moved along the length direction of the receiving groove 21, the pulley movable seat 4 can adjust the depth position in the depth direction of the pulley fixed seat 2. Specifically: a sliding shaft 7 is arranged in the middle of the pulley movable seat 4, and the sliding shaft 7 forms an inclined surface matching relationship with the guide inclined surface of the second shaft groove 23 and the guide inclined surface of the inclined block 24. The middle part of the sliding shaft 7 contacts the guide inclined surface on the inclined block 24, and the end of the sliding shaft 7 contacts the guide inclined surface of the second shaft groove 23.

[0033] The pulley roller 6 is rotatably connected to the pulley movable seat 4 via the pulley shaft 8 , so that the pulley roller 6 is rotatably arranged on the pulley movable seat 4 , and the end of the pulley shaft 8 contacts the guide inclined surface of the first shaft groove 22 .

[0034] The adjusting member is rotatably arranged on the pulley fixing seat 2 and abuts against the pulley moving seat 4, and is used to push the pulley moving seat 4 to move along the guide inclined surface to adjust the height of the pulley roller 6 extending out of the receiving groove 21. The adjusting member can be an adjusting screw 1, and the tip of the adjusting screw 1 abuts against the U-shaped pulley moving seat 4; when the adjusting screw 1 is rotated, the pulley moving seat 4 can be pushed to move in the receiving groove 21. The adjusting screw 1 can be threadedly connected with the pulley fixing seat 2, and one end of the adjusting screw 1 abuts against one end of the pulley moving seat 4; an insert block 3 can also be arranged on the pulley fixing seat 2, and the height of the insert block 3 is adjustable, and the insert block 3 is threadedly matched with the adjusting screw 1, and one end of the adjusting screw 1 extends into the receiving groove 21 and abuts against one end of the pulley moving seat 4.

[0035] A locking member 5 is fixedly connected to the pulley fixing seat 2. The locking member 5 is U-shaped or J-shaped. A limiting inclined groove 51 is arranged on the inner side of the locking member 5. The limiting inclined groove 51 can cooperate with the guiding inclined surface of the inclined block 24 to form an inclined long strip hole. The groove surface of the limiting inclined groove 51 abuts against the sliding shaft 7 and limits the pulley moving seat 4 from separating from the guiding inclined surface, so that the sliding shaft 7 can only slide between the limiting inclined groove 51 and the guiding inclined surface of the inclined block 24. In order to achieve the requirements of the locking member 5 and the pulley fixing seat 2, the locking member 5 can be fixed to the pulley fixing seat 2 by using a screw, or the following structure can be adopted: a U-shaped groove 53 is set at the end of the locking member 5; the side arms on both sides of the U-shaped groove 53 can be close to or away from each other, and a limiting hook 54 is set on the side of the side arm end facing away from the U-shaped groove 53, and a limiting protrusion 52 is set on the other side of the middle part of the side arm; a square hole is set at the bottom of the groove of the pulley fixing seat 2, and when the end of the locking member 5 is inserted into the square hole, the limiting protrusion 52 can be pressed against the hole opening at the upper part of the square hole, and the limiting hook 54 can be hooked to the hole opening at the lower part of the square hole, so that the cooperation of the limiting hook 54 and the limiting protrusion 52 can achieve the locking of the end of the locking member 5.

[0036] When the adjustable height pulley structure in this embodiment is applied to a sliding door, the two pulley rollers are installed on the pulley seat of the pulley moving seat, and the pulley fixing seat is often directly fixed to the door and window sashes; after the door and window sashes and the door and window frames are assembled and installed, if there is a size error between the pulley roller and the door and window track, the height between the two pulley seats can be adjusted to achieve the fit between the pulley roller and the door and window track, so that the pulley roller is not likely to separate from the track during the pushing and pulling process of the sliding door, thereby reducing direct friction, scratches and scratches between the door and window sashes and the door and window frames, thereby ensuring the safety of the sliding door during use.

[0037] The above embodiments are merely examples for the purpose of clarifying the description, and are not intended to limit the implementation methods; it is not necessary and impossible to list all implementation methods exhaustively. However, obvious changes or modifications derived therefrom are still within the scope of protection of the present technology.

Claims

1. A height-adjustable pulley structure, characterized in that: The invention comprises a pulley fixing seat (2), a pulley moving seat (4), a pulley roller (6) and an adjusting member; the pulley fixing seat (2) is in an elongated strip shape, a receiving groove (21) is arranged in the middle of the pulley fixing seat (2), a guiding inclined surface is arranged on the groove bottom or / and the groove wall of the receiving groove (21), and the guiding inclined surface is inclined in the depth direction of the receiving groove (21); the pulley moving seat (4) is arranged in the receiving groove (21) and forms an inclined surface matching relationship with the guiding inclined surface; the pulley roller (6) is rotatably arranged on the pulley moving seat (4); the adjusting member is rotatably arranged on the pulley fixing seat (2) and abuts against the pulley moving seat (4), and is used to push the pulley moving seat (4) to move along the guiding inclined surface, so as to adjust the height of the pulley roller (6) extending out of the receiving groove (21).

2. The height-adjustable pulley structure according to claim 1, characterized in that: A sliding shaft (7) is provided in the middle of the pulley moving seat (4), and the sliding shaft (7) forms an inclined plane matching relationship with the guiding inclined plane.

3. The height-adjustable pulley structure according to claim 2, characterized in that: The bottom of the accommodating groove (21) is provided with an inclined block (24), one side surface of the inclined block (24) forms the guiding inclined surface, and the middle portion of the sliding shaft (7) contacts the guiding inclined surface on the inclined block (24).

4. The height-adjustable pulley structure according to claim 2, characterized in that: A second shaft groove (23) is provided on the side wall of the accommodating groove (21), the groove wall on one side of the second shaft groove (23) is inclined and forms a guiding inclined surface, and the end of the sliding shaft (7) contacts the guiding inclined surface of the second shaft groove (23).

5. The height-adjustable pulley structure according to claim 2, characterized in that: The pulley roller (6) is rotationally connected to the pulley movable seat (4) via a pulley shaft (8).

6. The height-adjustable pulley structure according to claim 5, characterized in that: A first shaft groove (22) is provided on the side wall of the accommodating groove (21), the groove wall on one side of the first shaft groove (22) is inclined to form a guiding inclined surface, and the end of the pulley shaft (8) contacts the guiding inclined surface of the first shaft groove (22).

7. The height-adjustable pulley structure according to any one of claims 2 to 6, characterized in that: A locking member (5) is fixedly connected to the pulley fixing seat (2), the locking member (5) being U-shaped or J-shaped, and a limiting inclined groove (51) is arranged inside the locking member (5), the groove surface of the limiting inclined groove (51) abuts against the sliding shaft (7) and limits the pulley moving seat (4) from leaving the guide inclined surface.

8. The height-adjustable pulley structure according to claim 7, characterized in that: The end of the locking member (5) is provided with a U-shaped groove (53); the side arms on both sides of the U-shaped groove (53) can move closer to each other or farther away from each other, a limiting hook (54) is provided on the side of the end of the side arm facing away from the U-shaped groove (53), and a limiting protrusion (52) is provided on the other side of the middle part of the side arm; the bottom of the groove of the pulley fixing seat (2) is provided with a square hole, and when the end of the locking member (5) is inserted into the square hole, the limiting hook (54) cooperates with the limiting protrusion (52) to achieve the locking of the end of the locking member (5).

9. The height-adjustable pulley structure according to any one of claims 2 to 6, characterized in that: The adjusting member adopts an adjusting screw (1), the tip of which abuts against the U-shaped pulley moving seat (4); when the adjusting screw (1) is rotated, the pulley moving seat (4) can be pushed to move in the receiving groove (21).

10. The height-adjustable pulley structure according to claim 9, characterized in that: An insert block (3) is provided on the pulley fixing seat (2); the insert block (3) is threadably matched with the adjusting screw (1); and the height of the insert block (3) is adjustable.

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