Pulley

Abstract

The utility model relates to a pulley which comprises a first fixing piece and a second fixing piece which are detachably connected with each other, the first fixing piece comprises a first belt frame, the first belt frame comprises an extension section, the second fixing piece comprises a limiting plate corresponding to the extension section, and a clamping groove is formed between the limiting plate and the extension section. The extending section and the limiting plate are matched to form the clamping groove, after the relative position of the first rail and the second rail is adjusted, a user only needs to detach one of the first fixing piece and the second fixing piece from the belt, and the clamping groove disappears after the one fixing piece is detached, so that the clamping groove is not damaged. A user can pull one fixing piece to move relative to the belt so as to change the position of the fixing piece on the belt, and then the user installs the other fixing piece, so that the two fixing pieces are matched and are provided with parts such as a suspension arm in the prior art; adjustment of the fixing positions of the two fixing pieces and the belt can be completed without detaching the two fixing pieces from the belt, and convenience is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric curtain accessories, in particular to a pulley. Background Art

[0002] Electric curtain telescopic rails are deeply loved by people because of their adjustable rail lengths. An electric telescopic rail generally includes a first rail and a second rail. There are two connection modes for the first rail and the second rail. One is that the first rail and the second rail are arranged in parallel and are slidably connected between them. The other is that the first rail and the second rail are arranged as an outer rail and an inner rail, and are sleeved and slidably connected between the outer rail and the inner rail. A belt is wound around the first rail and the second rail, and a pulley is connected to the belt. The opening and closing of the curtain are driven by the sliding of the pulley. The pulley is composed of two fixing parts spliced together, and the lifting arm is installed on the two fixing parts by means of fasteners and the like.

[0003] When the user changes the length of the telescopic rail, the corresponding position of the pulley on the belt also needs to be changed, so that the pulley can drive the curtain to open and close completely. In the prior art, it is necessary to detach the two fixing parts from the belt at the same time. After adjusting the positions of the two fixing parts and the belt, the two fixing parts are connected to the belt again, which is rather troublesome. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is that in the prior art, it is necessary to detach the two fixing parts from the belt at the same time. After adjusting the positions of the two fixing parts and the belt, the two fixing parts are connected to the belt again, which is rather troublesome.

[0005] The utility model solves the above technical problem through the following technical solution: a pulley, the pulley includes a first fixing part and a second fixing part which are detachably connected to each other. The first fixing part includes a first belt bracket, and the first belt bracket includes an extension section. The second fixing part includes a limiting plate corresponding to the extension section, and a clamping groove is formed between the limiting plate and the extension section.

[0006] Specifically, teeth adapted to the belt are formed on one side surface of the limiting plate facing the extension section or on one side surface of the extension section facing the limiting plate.

[0007] Specifically, a first sliding channel for the belt to slide is formed on the first belt bracket.

[0008] Specifically, the cross section of the first sliding channel is U-shaped.

[0009] Specifically, the first belt bracket includes a first clamping plate and a first bottom plate, and the extension section is connected to the first clamping plate or the first bottom plate.

[0010] Specifically, the first belt rack further includes a second clamping plate, and the second clamping plate is connected to the first clamping plate through the first bottom plate.

[0011] Specifically, the first bottom plate extends toward one side of the extension section and is connected to the extension section.

[0012] Specifically, one side of the limiting plate is connected with a second bottom plate corresponding to the extension section.

[0013] Specifically, the first fixing member further includes a main body, the main body is connected to the first belt rack, and one end of the second clamping plate close to the extension section extends out of the main body or forms a notch.

[0014] Specifically, the second fixing member further includes a second belt rack, and the limiting plate is connected to the second belt rack.

[0015] Specifically, a second sliding channel for the belt to slide is formed on the second belt rack.

[0016] On the basis of conforming to the common knowledge in the art, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0017] The positive and progressive effects of the present invention are as follows: A clamping groove is formed by the cooperation between the extension section and the limiting plate. After adjusting the relative positions of the first track and the second track, the user only needs to remove one of the first fixing member and the second fixing member from the belt. Since the clamping groove disappears after the first fixing member or the second fixing member is removed, the user can pull the corresponding second fixing member or the first fixing member to move relative to the belt to change the position of the fixing member on the belt. When the fixing member reaches the predetermined position, the user then installs the other fixing member, so that the first fixing member and the second fixing member cooperate to install components such as a jib in the prior art, and the installation of the pulley can be completed. It is not necessary to remove the two fixing members from the belt to complete the adjustment of the fixed positions of the two fixing members and the belt, which is relatively convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of a pulley of the present invention applied to a track.

[0019] Figure 2 It is a connection relationship diagram of the pulley of the present invention and the belt.

[0020] Figure 3 It is a structural diagram of a pulley of the present invention.

[0021] Figure 4 It is a structural diagram of the first fixing member in the present invention.

[0022] Figure 5This is the structural diagram of the second fixing member in the present utility model.

[0023] Figure 6 This is the top view of a pulley of the present utility model.

[0024] Description of reference numerals in the drawings: 1. Pulley; 2. First track; 3. Second track; 4. First fixing member; 401. First clamping plate; 402. Second clamping plate; 403. First bottom plate; 5. Second fixing member; 6. First belt rack; 601. Extension section; 7. Clamping groove; 8. Limiting plate; 9. Teeth; 10. Notch; 11. First sliding channel; 12. Belt; 13. Main body. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restrictive of the present utility model and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0026] It should be noted that in the claims and the specification of this patent, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0027] The present utility model discloses a pulley 1, as Figure 1-6 shown. The pulley 1 includes a first fixing member 4 and a second fixing member 5 that are detachably connected to each other. The first fixing member 4 includes a first belt rack 6. The first belt rack 6 includes an extension section 601. The second fixing member 5 includes a limiting plate 8 corresponding to the extension section 601. A clamping groove 7 is formed between the limiting plate 8 and the extension section 601.

[0028] This application is applicable to telescopic rails. In the first case, the first rail 2 and the second rail 3 can be arranged side by side, and the first rail 2 and the second rail 3 are slidably connected. In the second case, the first rail 2 and the second rail 3 are respectively an inner rail and an outer rail, and the inner rail and the outer rail are sleeved inside and outside and slide relative to each other. As Figure 1-3 shown, the attached drawings of the specification in this application illustrate with the first type of telescopic rail as an example.

[0029] The first fixing member 4 and the second fixing member 5 are detachably connected to the belt 12. The first fixing member 4 includes a first belt holder 6. The first belt holder 6 is provided with an opening for the belt 12 to be placed in, and the first belt holder 6 is used to place the belt 12.

[0030] In the prior art, both of the two fixing members are respectively provided with a clamping groove 7. Therefore, it is necessary to detach both fixing members from the belt 12 for adjustment.

[0031] In this application, the first belt holder 6 includes an extension section 601. Correspondingly, the second fixing member 5 includes a limiting plate 8. A clamping groove 7 is formed between the extension section 601 and the limiting plate 8. Only by detaching the first fixing member 4 or the second fixing member 5 from the belt 12 can the restriction of the clamping groove 7 be released, so that the undetached fixing member can slide relative to the belt 12. In this way, only one fixing member needs to be detached to complete the adjustment of the fixed positions of the two fixing members on the belt 12, and the operation is convenient.

[0032] Specifically, teeth 9 adapted to the belt 12 are formed on one side surface of the limiting plate 8 facing the extension section 601 or on one side surface of the extension section 601 facing the limiting plate 8.

[0033] In the prior art, continuous teeth are provided on the belt 12 to cooperate with the belt pulley in the transmission box. Therefore, teeth 9 are provided on the limiting plate 8 or the extension section 601 to cooperate with the teeth on the belt 12, so that the clamping groove 7 can clamp the belt 12, ensuring that there is no relative sliding between the sliding of the trolley 1 and the belt 12 during operation.

[0034] Since only one fixing member needs to be detached in this application, the teeth 9 for abutting against the belt 12 can be selectively provided on one side surface of the limiting plate 8 facing the extension section 601 or on one side surface of the extension section 601 facing the limiting plate 8. When the teeth 9 are provided on one side surface of the limiting plate 8 facing the extension section 601, the second fixing member 5 needs to be detached during disassembly, so that the first fixing member 4 can slide relative to the belt 12; when the teeth 9 are provided on one side surface of the extension section 601 facing the limiting plate 8, the first fixing member 4 needs to be detached during disassembly, so that the second fixing member 5 can slide relative to the belt 12.

[0035] Specifically, a first sliding channel 11 for the belt 12 to slide is formed on the first belt holder 6.

[0036] Preferably, when the teeth 9 are arranged on one side of the limiting plate 8 facing the extension section 601, the second fixing member 5 needs to be disassembled during disassembly, so that the first fixing member 4 can slide relative to the belt 12. Therefore, a first sliding channel 11 is formed on the first belt rack 6, so that the belt 12 is slidably connected in the first sliding channel 11. It is ensured that the first fixing member 4 can slide along the first sliding channel 11 without disassembly, saving the disassembly and installation steps.

[0037] Specifically, the cross-section of the first sliding channel 11 is U-shaped.

[0038] Preferably, as Figure 4 shown, the cross-section of the first sliding channel 11 is U-shaped. An opening for the belt 12 to enter is provided on one side of the first sliding channel 11, and the rest of the first sliding channel 11 wraps the belt 12, so that the belt 12 will not easily come out of the first sliding channel 11, and its fixing effect is better.

[0039] Specifically, the first belt rack 6 includes a first clamping plate 401 and a first bottom plate 403, and the extension section 601 is connected to the first clamping plate 401 or the first bottom plate 403.

[0040] As Figure 4 , Embodiment 1: The extension section 601 extends a distance from one side of the first clamping plate 401, and the extension direction is the same as the arrangement direction of the first clamping plate 401, and the first clamping plate 401 is detachably connected or integrally formed with the extension section 601. The detachable connection method can adopt snap connection or the like. To ensure that the extension section 601 protrudes from the first clamping plate 401 in the first belt rack 6 and cooperates with the limiting plate 8 to form a clamping groove 7, so that the first fixing member 4 where the extension section 601 is located or the second fixing member 5 where the limiting plate 8 is located can be disassembled to adjust the fixing position of the fixing member and the belt 12, and the operation is convenient.

[0041] At this time, the length of the first bottom plate 403 corresponds to the first clamping plate 401, and there is no first bottom plate 403 at the corresponding position of the extension section 601. The setting of the first bottom plate 403 can limit the belt 12 so that the belt 12 does not shake in the first belt rack 6.

[0042] Or, at this time, the length of the first bottom plate 403 corresponds to the first clamping plate 401 and the extension section 601.

[0043] Embodiment 2: The extension section 601 is connected to the first bottom plate 403, that is, there is a gap between the first clamping plate 401 and the extension section 601. The extension section 601 is arranged on the first bottom plate 403. At this time, the length of the first bottom plate 403 is the combination of the extension section 601 and the first clamping plate 401. By setting the first bottom plate 403, the belt 12 can be restricted so that the belt 12 does not shake within the first belt rack 6. The extension section 601 is detachably connected to or integrally formed with the first bottom plate 403. To ensure that the extension section 601 is provided in the first belt rack 6 and cooperates with the limiting plate 8 to form a clamping groove 7, so as to disassemble the first fixing member 4 where the extension section 601 is located or the second fixing member 5 where the limiting plate 8 is located, that is, the adjusting fixing member, and the fixing position of the belt 12 is convenient to operate.

[0044] Specifically, the first belt rack 6 further includes a second clamping plate 402, and the second clamping plate 402 is connected to the first clamping plate 401 through the first bottom plate 403.

[0045] Based on the above first embodiment and second embodiment, the belt 12 passes between the second clamping plate 402 and the first clamping plate 401. The distance between the first clamping plate 401 and the second clamping plate 402 is adapted to the thickness of the belt 12, so that the belt 12 can smoothly pass through between the first clamping plate 401 and the second clamping plate 402 and the first clamping plate 401 and the second clamping plate 402 can also be relatively tightly connected to the belt 12 without shaking. The setting of the first bottom plate 403 ensures that the bottom surface of the belt 12 can be abutted, so that the pulley 1 does not shake up and down during the operation of the belt 12, ensuring the stability of the pulley 1. The first bottom plate 403, the first clamping plate 401, and the second clamping plate 402 are preferably integrally formed, saving the subsequent assembly process and being more convenient.

[0046] Specifically, one side of the limiting plate 8 is connected with a second bottom plate corresponding to the extension section 601.

[0047] Based on the above first embodiment, and at this time the length of the first bottom plate 403 corresponds to the first clamping plate 401, and there is no first bottom plate 403 at the corresponding position of the extension section 601. The connection between the second clamping plate 402 and the first clamping plate 401 can adopt the combination of the first bottom plate 403 and the second bottom plate. In order to ensure that the first bottom plate 403 can continuously abut the bottom surface of the belt 12, a second bottom plate can also be arranged on one side of the limiting plate 8. The second bottom plate cooperates with the first bottom plate 403 connected between the above first clamping plate 401 and the second clamping plate 402, so as to form a structure that can continuously abut the bottom surface of the belt 12, so that the pulley 1 does not shake up and down during the operation of the belt 12, ensuring the stability of the pulley 1. When the first fixing member 4 and the second fixing member 5 cooperate, the first bottom plate 403 and the second bottom plate are preferably abutted against each other.

[0048] Specifically, the first fixing member 4 further includes a main body 13. The main body 13 is connected to the first belt rack 6. One end of the second clamping plate 402 close to the extension section 601 extends out of the main body 13 or forms a notch 10.

[0049] As Figure 4 shown, the first fixing member 4 includes a main body 13 and a first belt rack 6. Preferably, the main body 13 and the first belt rack 6 are integrally formed. When one end of the second clamping plate 402 close to the extension section 601 extends out of the main body 13, correspondingly, the second fixing member 5 also includes a main body 13 and a limiting plate 8. The limiting plate 8 and the main body 13 are integrally formed. One end of the limiting plate 8 forms a notch 10. The notch 10 cooperates with one end of the second clamping plate 402. In this way, after the pulley 1 is adjusted in place, when the first fixing member 4 and the second fixing member 5 are docked, it can prompt the operator that the first fixing member 4 and the second fixing member 5 are cooperatively connected in place, without the operator manually connecting the first fixing member 4 and the second fixing member 5 in place, which is more labor-saving.

[0050] Similarly, when one end of the second clamping plate 402 close to the extension section 601 forms a notch 10, one end of the limiting plate 8 extends out of the main body 13, and the notch 10 cooperates with one end of the limiting plate 8.

[0051] Second embodiment: Specifically, the second fixing member 5 further includes a second belt rack, and the limiting plate 8 is connected to the second belt rack.

[0052] The second fixing member 5 further includes a second belt rack. The structure of the second belt rack is the same as that of the first belt rack 6 in the first embodiment, that is, when the teeth 9 are provided on the side surface of the extension section 601 facing the limiting plate 8, the first fixing member 4 needs to be disassembled during disassembly so that the second fixing member 5 can slide relative to the belt 12. The second belt rack is provided on the limiting plate 8. Preferably, the second belt rack and the limiting plate 8 are integrally formed.

[0053] Correspondingly, a second sliding channel for the belt 12 to slide is formed on the second belt rack. The second sliding channel ensures that the second fixing member 5 can slide relative to the belt, eliminating the steps of disassembling and installing the second fixing member 5.

[0054] In this embodiment, the first belt rack 6 only serves to place the belt 12, and no first sliding channel 11 for the belt 12 to slide is formed on the first belt rack 6. The second sliding channel on the second belt rack enables the second fixing member 5 to slide relative to the belt 12, eliminating the disassembly step of the second fixing member 5.

[0055] At this time, when the teeth 9 are provided on the side surface of the extension section 601 facing the limiting plate 8, the first fixing member 4 needs to be disassembled during disassembly so that the second fixing member 5 can slide relative to the belt 12.

[0056] Other embodiments of the present utility model will be readily contemplated by those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the present utility model, which follow the general principles of the present utility model and include known common general knowledge or conventional technical means in the technical field not disclosed in the present utility model. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present utility model are pointed out by the following claims.

[0057] It should be understood that the present utility model is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present utility model is only limited by the appended claims.

Claims

1. A pulley (1), characterized in that: The pulley (1) comprises a first fixing member (4) and a second fixing member (5) which are detachably connected to each other, the first fixing member (4) comprises a first belt frame (6), the first belt frame (6) comprises an extension section (601), the second fixing member (5) comprises a limiting plate (8) corresponding to the extension section (601), and a clamping groove (7) is formed between the limiting plate (8) and the extension section (601).

2. A pulley (1) according to claim 1, characterized in that: A side of the limiting plate (8) facing the extension section (601) or a side of the extension section (601) facing the limiting plate (8) is formed with teeth (9) adapted to the belt (12).

3. A pulley (1) according to claim 1, characterized in that: The first belt frame (6) is formed with a first sliding channel (11) for the belt (12) to slide.

4. A pulley (1) according to claim 3, characterized in that: The cross section of the first sliding channel (11) is U-shaped.

5. A pulley (1) according to claim 1, characterized in that: The first belt frame (6) comprises a first clamping plate (401) and a first bottom plate (403), and the extension section (601) is connected to the first clamping plate (401) or the first bottom plate (403).

6. A pulley (1) according to claim 5, characterized in that: The first belt rack (6) further comprises a second clamping plate (402), wherein the second clamping plate (402) is connected to the first clamping plate (401) via the first bottom plate (403).

7. A pulley (1) according to any one of claims 1 to 6, characterized in that: One side of the limiting plate (8) is connected to a second bottom plate corresponding to the extending section (601).

8. A pulley (1) according to claim 6, characterized in that: The first fixing member (4) further comprises a main body (13), wherein the main body (13) is connected to the first belt rack (6), and an end of the second clamping plate (402) close to the extension section (601) extends out of the main body (13) or is formed with a notch (10).

9. A pulley (1) according to claim 1, characterized in that: The second fixing member (5) also includes a second belt rack, and the limiting plate (8) is connected to the second belt rack.

10. A pulley (1) according to claim 9, characterized in that: The second belt frame is formed with a second sliding channel for the belt (12) to slide.

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