Gravity stop pulley structure

Abstract

The utility model discloses a gravity stop pulley structure which comprises a shell and a sliding structure, the shell is provided with a compression cavity, the gravity stop pulley structure further comprises a mounting seat, the mounting seat is provided with an embedded cavity, one part of the sliding structure is located in the embedded cavity, and the other part of the sliding structure protrudes out of a cavity opening of the embedded cavity. At least one part of the mounting base is located in the compression cavity and can move between an extending position and a contracting position relative to the compression cavity, and when the mounting base is located at the extending position, at least one part of the sliding structure is located outside the compression cavity. When the installation base is located at the contraction position, the sliding structure is completely located in the compression cavity, the installation base and the shell are of detachable design, the internal sliding structure is protected by the installation base and the shell in a multi-layer mode, refitting of the sliding structure can be completed by detaching the installation base, the use process is simple and convenient, and high practical value is achieved.

Description

Technical Field

[0001] The utility model relates to the field of pulleys, in particular to a gravity stop pulley structure. Background Technique

[0002] Pulleys are widely used in various fields. They not only continuously consolidate their basic position in traditional manufacturing industries but also show strong development momentum in emerging fields such as high-end equipment, new energy vehicles, and aerospace. In specific situations, pulleys also need to have specific functions.

[0003] In some special situations, the pulley structure needs to have a stop function during use and be able to slide for convenient handling when not in use. For example, in a recreation room, after the position of the chair is selected, it should not move anymore, and unnecessary sliding may cause unnecessary trouble.

[0004] Therefore, how to design a gravity stop pulley structure that can automatically switch the pulley state in different usage scenarios has become an urgent problem for those skilled in the art. To solve this problem, this application proposes a gravity stop pulley structure. Content of the Utility Model

[0005] The purpose of the utility model is to provide a gravity stop pulley structure to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] Provide a gravity stop pulley structure, including a housing and a sliding structure. The housing is provided with a compression cavity. The gravity stop pulley structure further includes a mounting seat. The mounting seat is provided with an embedded cavity. A part of the sliding structure is located in the embedded cavity, and another part of the sliding structure protrudes from the opening of the embedded cavity. At least a part of the mounting seat is located in the compression cavity and can move relative to the compression cavity between an extended position and a retracted position. When the mounting seat is in the extended position, at least a part of the sliding structure is located outside the compression cavity. When the mounting seat is in the retracted position, the sliding structure is completely located in the compression cavity. A spring is provided in the compression cavity. The two ends of the spring are respectively abutted against the inner wall of the compression cavity and the outer wall of the mounting seat to apply a force towards the extended position to the mounting seat.

[0008] Furthermore, a clamping buckle is provided on the side wall of the housing, and the housing is connected to the bottom of the support leg under the action of the clamping buckle.

[0009] Further, the outer shell is provided with a clamping groove on the inner wall of the compression cavity, and the mounting seat is provided with a corresponding buckle on the outer wall. The buckle can slide up and down in the clamping groove. When the buckle slides to the bottom end of the clamping groove, the sliding structure protrudes from the orifice of the compression cavity. When the buckle slides to the top end of the clamping groove, the sliding structure and the mounting seat are completely located inside the compression cavity.

[0010] Further, the sliding structure includes a bidirectional wheel and a roller. The roller passes through the mounting seat, and the bidirectional wheel is rotatably arranged on the roller and a part of it protrudes from the orifice of the embedded cavity.

[0011] Further, the top of the mounting seat is a flat surface, and the spring abuts against the top of the mounting seat.

[0012] Further, the sliding structure includes a first ball. The first ball is rotatably arranged in the embedded cavity of the mounting seat, and a part of the first ball protrudes from the orifice of the embedded cavity of the mounting seat.

[0013] Further, the balls further include a plurality of second balls. The plurality of second balls are annularly distributed in the embedded cavity, and the first ball is in rolling connection with the ball ring formed by the second balls.

[0014] Further, a jack is provided at the connection between the mounting seat and the spring. The spring passes through the jack and abuts against the bottom of the jack.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The present utility model provides a gravity stop pulley structure. The sliding structure can be telescoped by the spring. When the chair or stool is in an unused state, the spring pushes out the sliding structure, and the buckle slides to the bottom end of the clamping groove. The sliding structure contacts the ground, and the chair or stool can slide during transportation, reducing the labor for transportation and improving the flexibility of use of the chair or stool. However, when in use, due to the spring being compressed under pressure, the sliding structure retracts inside the outer shell, and the bottom of the outer shell contacts the ground. At this time, the chair or stool cannot slide, ensuring the safety during the use of the chair or stool. During the process, the state transformation can be completed without manually changing the sliding structure. The sliding structure can also be set to slide bidirectionally and omnidirectionally, and the mounting seat and the outer shell are of a detachable design. The internal sliding structure is protected by multiple layers of the mounting seat and the outer shell. Removing the mounting seat can complete the modification of the sliding structure. The use process is simple, and it has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the first embodiment diagram of a gravity stop pulley structure of the present utility model;

[0018] Figure 2 It is the second embodiment diagram of a gravity stop pulley structure of the present utility model;

[0019] Figure 3 This is the front view of the housing of a gravity locking pulley structure of the present utility model;

[0020] Figure 4 This is the first sectional view of a gravity locking pulley structure of the present utility model;

[0021] Figure 5 This is the second sectional view of a gravity locking pulley structure of the present utility model;

[0022] Figure 6 This is the structure diagram of the two-way wheel of a gravity locking pulley structure of the present utility model;

[0023] Figure 7 This is the structure diagram of the second mounting seat of a gravity locking pulley structure of the present utility model;

[0024] The markings of each component in the attached drawings are as follows: 1. Housing; 11. Clamping buckle; 12. Clamping groove; 13. Compression chamber; 21. First sliding structure; 211. Two-way wheel; 212. Roller; 213. First mounting seat; 214. First buckle; 215. First embedded cavity; 22. Second sliding structure; 221. First ball; 222. Second ball; 223. Second mounting seat; 224. Second buckle; 225. Insertion hole; 226. Second embedded cavity; 31. First spring; 32. Second spring. 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. For the sake of clarity, many practical details will be described together in the following description. However, it should be understood that these practical details are not used to limit this application. That is, in some embodiments of this application, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some well-known and commonly used structures and components will be shown in the drawings in a simple schematic manner.

[0026] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of this application are only used to explain the relative positional relationship and movement conditions between components in a specific posture as shown in the attached drawings. If this specific posture changes, then the directional indications will also change accordingly.

[0027] In addition, in this application, descriptions such as "first" and "second" are only for descriptive purposes, and do not particularly refer to the order or sequence. Nor are they used to limit this application. They are merely used to distinguish components or operations described with the same technical terms, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0028] To further understand the inventive content, features and effects of this application, the following embodiments are exemplified and described in detail in conjunction with the accompanying drawings as follows.

[0029] Please refer to Figures 1 to 7 , a gravity stop pulley structure is provided, including a housing 1, a mounting seat and a sliding structure. The housing 1 is provided with a compression cavity 13, and a spring is arranged in the compression cavity 13. Both ends of the spring are respectively abutted against the inner wall of the compression cavity 13 and the outer wall of the mounting seat. The mounting seat is provided with an embedded cavity, and the sliding structure is fixed in the embedded cavity. One end of the sliding structure protrudes from the orifice of the embedded cavity, and in the initial state of the spring, the sliding structure protrudes from the orifice of the compression cavity 13. After the spring is additionally compressed under a certain pressure on the basis of the initial state, both the mounting seat and the sliding structure are completely located in the compression cavity 13. A clamping buckle 11 is arranged on the side wall of the housing 1, and the housing 1 is connected to the bottom end of the support leg under the action of the clamping buckle 11. The bottom of the support leg has a clamping structure corresponding to the clamping buckle 11.

[0030] Please refer to Figure 3 , the clamping buckle 11 is preferably a push-type clamping buckle, and barbs are arranged on the outer wall of the clamping buckle 11. The clamping structure at the bottom of the support leg is a slot structure, and reverse barbs corresponding to the barbs are arranged inside the slot, so that the gravity stop pulley structure is not easily detached when installed inside the slot, and when it is not needed, it only needs to be pressed from both sides to extract the clamping buckle 11. The housing 1 and the mounting seat form multiple layers of protection for the internal sliding structure, making the sliding structure not easily damaged from the outside.

[0031] Please refer to Figures 3 to 7, specifically, the housing 1 is provided with a clamping groove 12 on the side wall of the compression chamber 13, and the mounting seat is provided with a corresponding buckle on the outer wall. The buckle can slide up and down in the clamping groove 12. The mounting seat and the housing 1 are connected by the buckle, and the buckle connection is detachable. Preferably, the buckle is a push-type buckle, and the buckle can be disengaged from the clamping groove 12 in the pressed state. When the buckle slides to the bottom end of the clamping groove 12, the sliding structure protrudes from the orifice of the compression chamber 13. When the buckle slides to the top end of the clamping groove 12, the sliding structure and the mounting seat retract into the compression chamber 13.

[0032] The sliding structure can drive the chair and stool to slide. The following are two implementation modes of the sliding structure:

[0033] Please refer to Figure 4 and Figure 6 , Embodiment 1: The first sliding structure 21 includes a bidirectional wheel 211 and a roller 212. The first mounting seat 213 is adapted to the first sliding structure 21. The first mounting seat 213 is provided with a first inner cavity 215. The roller 212 passes through the first inner cavity 215. The bidirectional wheel 211 protrudes from the orifice of the first inner cavity 215 and can rotate on the roller 212. The top of the first mounting seat 213 is a flat surface. The first spring 31 abuts against the top of the first mounting seat 213. The first mounting seat 213 is provided with outwardly protruding first buckles 214 on the side walls. Preferably, a total of four first buckles 214 are provided on the two side walls of the first mounting seat 213, and the four first buckles 214 are symmetrically arranged in pairs on the two side walls. The inner wall of the compression chamber 13 of the housing 1 has four corresponding clamping grooves 12, and the four first buckles 214 slide synchronously in the clamping grooves 12.

[0034] Please refer to Figure 5 and Figure 7 , Embodiment 2: The second sliding structure 22 includes a first ball 221 and a plurality of second balls 222. The second mounting seat 223 is adapted to the second sliding structure 22. The second mounting seat 223 is provided with a second inner cavity 226. The second mounting seat 223 is provided with a concave ring on the inner wall of the second inner cavity 226. The plurality of second balls 222 are distributed in the concave ring to form a ball ring. One end of the first ball 221 is in rolling connection with the ball ring, and the other end protrudes from the orifice of the inner cavity of the mounting seat. Since the first ball 221 and the second balls 222 are in rolling connection, the friction of the first ball 221 during rolling is reduced, and the stability of the first ball 221 is improved. The second mounting seat 223 is provided with a jack 225. The second spring 32 is adapted to the second mounting seat 223. The second spring 32 passes through the jack 225 and abuts against the bottom of the jack 225.

[0035] Since the internal space of the compression chamber 13 of the outer shell 1 remains unchanged, in order to achieve the abutment of the spring against the mounting seat, the length of the second spring 32 is longer than that of the first spring 31. In order to achieve the detachable modification of the sliding structure, the structures and numbers of the first buckle 214 and the second buckle 224 are the same. The mounting seat and the sliding structure are an integral structure, and the mounting seat and the sliding structure can be disassembled and assembled according to actual use requirements to meet the needs.

[0036] The present utility model provides a gravity stop pulley structure. The sliding structure can be telescoped by a spring. When the chair or stool is in an unused state, the spring pushes out the sliding structure, and the buckle slides to the bottom end of the clamping groove 12, and the sliding structure contacts the ground. During the handling process, the chair or stool can slide, reducing the labor for handling and improving the flexibility of using the chair or stool. However, when in use, since the spring is compressed under pressure, the sliding structure retracts into the outer shell 1, and the bottom of the outer shell 1 contacts the ground. At this time, the chair or stool cannot slide, ensuring the safety of the chair or stool during use. During the process, the state change can be completed without manually changing the sliding structure. The sliding structure can also be set to slide bidirectionally and omnidirectionally, and the mounting seat and the outer shell 1 are of a detachable design. The internal sliding structure is protected by multiple layers of the mounting seat and the outer shell 1. Removing the mounting seat can complete the modification of the sliding structure. The use process is simple and has high practical value.

[0037] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A gravity stop pulley structure, comprising a housing (1) and a sliding structure, wherein the housing (1) is provided with a compression chamber (13), and is characterized in that: The gravity stop pulley structure further includes a mounting seat. The mounting seat is provided with an embedded cavity. A part of the sliding structure is located inside the embedded cavity, and another part of the sliding structure protrudes from the opening of the embedded cavity. At least a part of the mounting seat is located inside the compression cavity (13) and can move relative to the compression cavity (13) between an extended position and a retracted position. When the mounting seat is in the extended position, at least a part of the sliding structure is located outside the compression cavity (13). When the mounting seat is in the retracted position, the sliding structure is completely located inside the compression cavity (13). A spring is provided inside the compression cavity (13). Two ends of the spring respectively abut against the inner wall of the compression cavity (13) and the outer wall of the mounting seat to apply a force towards the extended position to the mounting seat.

2. The gravity stop pulley structure according to claim 1, characterized in that: The housing (1) is provided with a clamping groove (12) on the inner wall of the compression cavity (13). The mounting seat is provided with a corresponding buckle on the outer wall. The buckle can slide up and down in the clamping groove (12). When the buckle slides to the bottom end of the clamping groove (12), the sliding structure protrudes from the opening of the compression cavity (13). When the buckle slides to the top end of the clamping groove (12), the sliding structure and the mounting seat are completely located inside the compression cavity (13).

3. The gravity-actuated pulley structure according to claim 2, characterized in that: The sliding structure includes a bidirectional wheel (211) and a roller (212). The roller (212) passes through the mounting seat. The bidirectional wheel is rotatably arranged on the roller (212) and a part of it protrudes from the opening of the embedded cavity.

4. A gravity stop pulley structure according to claim 3, characterized in that: The top of the mounting seat is a plane. The spring abuts against the top of the mounting seat.

5. The gravity stop pulley structure according to claim 2, wherein: The sliding structure includes a first ball. The first ball is rotatably arranged inside the embedded cavity of the mounting seat, and a part of the first ball protrudes from the opening of the embedded cavity of the mounting seat.

6. The gravity-stopping pulley structure according to claim 5, characterized in that: The balls further include a plurality of second balls (222). The plurality of second balls (222) are annularly distributed in the embedded cavity. The first ball (221) is in rolling connection with the ball ring formed by the second balls (222).

7. A gravity stop pulley structure according to claim 5 or 6, characterized in that: A jack (225) is provided at the connection between the mounting seat and the spring. The spring passes through the jack (225) and abuts against the bottom of the jack (225).

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