Anti-toppling detection device for swivel chair
By designing a swivel chair anti-tipping detection device, which uses tension straps and counterweights to simulate human force and weight, the accuracy and safety of swivel chair tipping detection are achieved, solving the uncertainty and safety risks of existing detection methods.
Patent Information
- Application Number
- CN202520243843.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2035-02-17
AI Technical Summary
Existing methods for detecting the tipping of swivel chairs present uncertainties and safety risks, especially when a person sits directly on the swivel chair to perform multi-angle adjustments, which could lead to the chair tipping over and endanger the testing personnel.
A swivel chair anti-tipping detection device was designed, including a base plate, a fixing ring, a mounting base, a winding motor, a tension belt, a counterweight, and a limiting device. The tension belt simulates human force, and the counterweight simulates human weight, so as to achieve accurate detection of the swivel chair and avoid human intervention.
This technology ensures the accuracy and safety of swivel chair tipping detection, preventing injury to testing personnel from accidental chair tipping during the testing process and protecting their personal safety.
Smart Images
Figure CN223500661U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of mechanical technology, and in particular to a swivel chair anti-tipping detection device. Background Technology
[0002] After the initial production of the swivel chair is completed, it needs to be tested for tipping over. Modern ergonomic swivel chairs have adjustable backrests. The chair must undergo tipping tests under different conditions, such as normal load-bearing conditions and the maximum adjustable backrest angle. Only after meeting these requirements can mass production begin. The traditional testing method involves having someone sit directly on the chair and adjust it at multiple angles. However, this process involves considerable uncertainty and carries certain risks. Summary of the Invention
[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a swivel chair anti-tipping detection device, which features accurate and safe detection of swivel chair tipping.
[0004] The objective of this utility model can be achieved through the following technical solutions:
[0005] A swivel chair anti-tipping detection device includes:
[0006] The base plate is provided with a fixing ring, and the fixing ring forms a limiting area inside to restrict the chair legs;
[0007] Two mounting seats are slidably disposed on both sides of the fixed ring and are arranged in parallel. A winding motor is fixed on each mounting seat, and a winding roller is rotatably disposed on each mounting seat. The output shaft of the winding motor is connected to the winding roller.
[0008] The tensioning strap has its two ends fixedly connected to two take-up rollers, and the tensioning strap is used to restrain the backrest of the swivel chair.
[0009] A counterweight, which is used to be placed on the seat cushion of the seat.
[0010] In the aforementioned anti-tipping detection device for swivel chairs, a limiting part is provided on the tension band, and the limiting part and the tension band form a limiting pocket, which is fitted onto the headrest of the backrest.
[0011] In the aforementioned anti-tipping detection device for swivel chairs, anti-slip fabric is sewn onto the tension strap.
[0012] In the aforementioned anti-tipping detection device for a swivel chair, a guide rail is fixed on the base plate, and the mounting seat is slidably mounted on the guide rail. The mounting seat has a through hole, and a limiting rod passes through the through hole. The limiting rod can rise and fall relative to the through hole. Several limiting teeth are installed on the side of the guide rail, and there is a gap between adjacent limiting teeth. The limiting rod can extend into the gap to restrict the movement of the mounting seat.
[0013] In the aforementioned anti-tipping detection device for swivel chairs, a pull ring is fixed to the upper end of the limiting rod, and the size of the pull ring is larger than the diameter of the through hole.
[0014] In the aforementioned anti-tipping detection device for swivel chairs, the tensioning band includes two tensioning ropes and a tensioning part. The tensioning ropes are connected to the tensioning band via a tension gauge, and the other end of the tensioning rope is fixedly connected to the take-up roller.
[0015] Compared with the prior art, this application has the following advantages:
[0016] Compared to the traditional method of multi-angle adjustment and testing by having a person sit directly on a swivel chair, this device does not require direct human participation in the testing process, avoiding the risk of injury to the testing personnel due to the swivel chair accidentally tipping over during the testing process, and greatly ensuring the personal safety of the testing personnel. Attached Figure Description
[0017] Figure 1 This is a top view in this application;
[0018] Figure 2 This is a side view of the application in a test state;
[0019] Figure 3 This is a partial sectional view of the mounting base in the application;
[0020] In the picture,
[0021] 2. Base plate; 21. Fixing ring; 22. Guide rail; 221. Limiting tooth; 222. Spacing;
[0022] 3. Mounting base; 31. Rewinding motor; 32. Rewinding roller; 33. Through hole; 34. Limiting rod; 341. Pull ring;
[0023] 4. Tensioner strap; 41. Limiting part; 42. Limiting pocket; 43. Tensioner rope; 44. Tensioner part; 45. Tension gauge;
[0024] 5. Counterweight. Detailed Implementation
[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.
[0026] like Figures 1 to 3 As shown, a swivel chair anti-tipping detection device includes: a base plate 2, two mounting seats 3, a tension strap 4, and a counterweight 5. A fixing ring 21 is provided on the base plate 2, and a limiting area for restricting the chair legs is formed inside the fixing ring 21. The two mounting seats 3 are slidably arranged on both sides of the fixing ring 21 and are arranged in parallel. A winding motor 31 is fixed on each mounting seat 3, and a winding roller 32 is rotatably arranged on the mounting seat 3. The output shaft of the winding motor 31 is connected to the winding roller 32. The two ends of the tension strap 4 are fixedly connected to the two winding rollers 32, and the tension strap 4 is used to restrain the backrest of the swivel chair. The counterweight 5 is used to be placed on the seat cushion.
[0027] In this application, the fixing ring 21 provided on the base plate 2 forms a limiting area inside. The chair legs of the swivel chair are placed in this limiting area, which can play a preliminary positioning and limiting role for the swivel chair from the bottom, preventing the swivel chair from arbitrarily shifting to a large extent during the testing process.
[0028] Two mounting bases 3 are slidably mounted on both sides of the fixing ring 21 and are parallel to each other. A winding motor 31 on each base is connected to a winding roller 32. The tension band 4 is fixed at both ends to the two winding rollers 32. When the winding motor 31 is started, the winding rollers 32 wind or unwind the tension band 4. During testing, the tension band 4 is wrapped around the back of the swivel chair and appropriately tightened. The tightness of the tension band 4 is adjusted by controlling the winding motor 31 to simulate different external forces acting on the backrest. For example, it can simulate the force exerted on the swivel chair backrest when a person leans against the backrest and adjusts their posture or backrest angle. A counterweight 5 is placed on the seat cushion to simulate the weight of a person sitting on the swivel chair. Even if someone falls, there is no danger.
[0029] Compared to the traditional method of multi-angle adjustment and testing by having a person sit directly on a swivel chair, this device does not require direct human participation in the testing process, avoiding the risk of injury to the testing personnel due to the swivel chair accidentally tipping over during the testing process, and greatly ensuring the personal safety of the testing personnel.
[0030] Specifically, the tension band 4 is provided with an upper sewn limiting part 41, the limiting part 41 and the tension band 4 form a limiting pocket 42, and the limiting pocket 42 is fitted onto the headrest of the backrest.
[0031] The limiting pocket 42 is fitted onto the headrest of the backrest, which, compared to simply relying on the tension strap 4 to restrain the backrest, further enhances the tightness and stability of the connection with the swivel chair backrest. Since the backrest still has a certain degree of tilt after adjustment, the tension strap 4 can remain fixed in a fixed state after being fitted with the limiting pocket 42, and will not shift.
[0032] Specifically, anti-slip fabric is sewn onto the tension band 4.
[0033] Specifically, a guide rail 22 is fixed on the base plate 2, and the mounting base 3 is slidably mounted on the guide rail 22. The mounting base 3 is provided with a through hole 33, and a limiting rod 34 is passed through the through hole 33. The limiting rod 34 can rise and fall relative to the through hole 33. Several limiting teeth 221 are installed on the side of the guide rail 22, and there is a gap 222 between adjacent limiting teeth 221. The limiting rod 34 can extend into the gap 222 to restrict the movement of the mounting base 3.
[0034] Mounting base 3 can slide on guide rail 22. Mounting base 3 is provided with through hole 33. Limiting rod 34 passes through through hole 33 and can be raised and lowered relative to through hole 33. Several limiting teeth 221 are installed on the side of guide rail 22. There is a gap 222 between adjacent limiting teeth 221. When it is necessary to fix the position of mounting base 3, the limiting rod 34 is lowered so that it extends into the gap 222 between limiting teeth 221.
[0035] This design is suitable for swivel chairs with backrests of different heights.
[0036] Specifically, a pull ring 341 is fixed to the upper end of the limiting rod 34, and the size of the pull ring 341 is larger than the diameter of the through hole 33.
[0037] The pull ring 341 is used to limit the movement, preventing the limit rod 34 from falling through the through hole 33, and making it easier to remove the limit rod 34.
[0038] Specifically, the tensioning band 4 includes two tensioning ropes 43 and a tensioning part 44. The tensioning ropes 43 are connected to the tensioning band 4 via a tension gauge 45, and the other end of the tensioning ropes 43 is fixedly connected to the take-up roller 32.
[0039] With the tension rope 43 connected to the tensioning part 44 via the tension gauge 45, the tension force borne by the tension rope 43 can be measured in real time and accurately. When performing anti-tipping tests on the swivel chair, when the tension rope 43 is wound up or unwound by the winding roller 32 to simulate different external forces acting on the back of the swivel chair, the specific tension value can be accurately obtained through the tension gauge 45, which helps to accurately record the external force borne by the swivel chair under different conditions.
[0040] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture, as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.
[0041] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Meanwhile, the word "and / or" throughout the text means including three solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.
[0042] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.
[0043] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
Claims
1. A swivel chair anti-tipping detection device, characterized in that, include: The base plate (2) is provided with a fixing ring (21), and the fixing ring (21) forms a limiting area inside for restricting the legs of the swivel chair; Two mounting seats (3) are slidably disposed on both sides of the fixed ring (21) and the two mounting seats (3) are arranged in parallel. A winding motor (31) is fixed on each mounting seat (3). A winding roller (32) is also rotatably disposed on the mounting seat (3). The output shaft of the winding motor (31) is connected to the winding roller (32). The tensioning strap (4) has its two ends fixedly connected to two take-up rollers (32), and the tensioning strap (4) is used to restrain the backrest of the swivel chair. Counterweight (5), which is used to be placed on the seat cushion of the seat.
2. The anti-tipping detection device for a swivel chair according to claim 1, characterized in that, The tension band (4) is provided with an upper sewn limiting part (41), the limiting part (41) and the tension band (4) form a limiting pocket (42), and the limiting pocket (42) is fitted onto the headrest of the backrest.
3. The anti-tipping detection device for a swivel chair according to claim 2, characterized in that, The tension band (4) is sewn with anti-slip fabric.
4. The anti-tipping detection device for a swivel chair according to claim 1, characterized in that, A guide rail (22) is fixed on the base plate (2), and the mounting base (3) is slidably disposed on the guide rail (22). The mounting base (3) is provided with a through hole (33), and a limiting rod (34) is inserted through the through hole (33). The limiting rod (34) can rise and fall relative to the through hole (33). Several limiting teeth (221) are installed on the side of the guide rail (22), and there is a gap (222) between adjacent limiting teeth (221). The limiting rod (34) can extend into the gap (222) to restrict the movement of the mounting base (3).
5. The swivel chair anti-tipping detection device according to claim 4, characterized in that, The upper end of the limiting rod (34) is fixed with a pull ring (341), the size of which is larger than the diameter of the through hole (33).
6. The anti-tipping detection device for a swivel chair according to claim 1, characterized in that, The tensioning band (4) includes two tensioning ropes (43) and a tensioning part (44). The tensioning ropes (43) are connected to the tensioning band (4) via a tension gauge (45), and the other end of the tensioning ropes (43) is fixedly connected to the take-up roller (32).