Pneumatic lifting office chair with explosion-proof device
By installing a connecting frame, explosion-proof plate, and buffer components under the seat of the pneumatic height-adjustable office chair, the problem of fragments flying when the cylinder explodes is solved, thus achieving safety protection for the user and surrounding personnel.
Patent Information
- Application Number
- CN202520440808.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-03-13
AI Technical Summary
A metal plate installed under the seat of a pneumatic lift chair is only moderately effective at blocking the impact of an explosion, resulting in flying debris that can injure people.
A connecting frame is installed under the seat of the pneumatic height-adjustable office chair. It contains an explosion-proof plate and a buffer assembly. The connecting frame has an exhaust hole. The explosion-proof plate has a convex structure. The buffer plate and spring form a buffer assembly to prevent fragments from flying and to buffer the impact when the cylinder explodes.
It effectively prevents fragments from flying when the cylinder explodes, reducing injury to the user and those around them. The cushioning components reduce vibration and improve safety.
Smart Images
Figure CN223667578U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to pneumatic lifting office chair technical field, specifically point to a kind of pneumatic lifting office chair with explosion-proof device. BACKGROUND
[0002] Pneumatic lifting office chair has become the mainstream of automatic lifting chair, and occupies more than 80% of the market share due to flexible and convenient operation. However, the core component of pneumatic lifting office chair, pneumatic cylinder, is an unsafe factor. Some manufacturers use inferior pneumatic cylinders or qualified pneumatic cylinders that become aged after a period of use, or operators use them improperly (such as frequent lifting), which can all lead to pneumatic cylinder explosion, directly endangering the personal safety of the person sitting on the chair. There are many cases of pneumatic lifting chair explosion every year, resulting in death or serious injury.
[0003] The seat of pneumatic lifting chair is composed of three parts: wood board, sponge and fabric. The wood board serves as the supporting structure of the seat, providing stable support; the sponge is used to increase comfort and reduce the hardness of the seat; and the fabric is covered on the wood board and sponge to provide aesthetics and tactile sensation. However, these materials will be directly broken under the strong explosion impact of the pneumatic cylinder. Some pneumatic lifting chairs are installed with an iron plate on the lower side of the seat to block the upward impact force of the explosion. However, this blocking effect is generally ineffective because the impact force of the explosion will spread outward along the iron plate, and some debris of the parts will be sprayed out, causing harm to the user's legs and surrounding people.
[0004] To solve the above technical problems, the present application provides a pneumatic lifting office chair with explosion-proof device. CONTENT OF THE UTILITY MODEL
[0005] I. Technical problems solved
[0006] The technical problem to be solved by the utility model is that an iron plate is installed on the lower side of the seat of pneumatic lifting chair to block the upward impact force of the explosion. However, this blocking effect is generally ineffective because the impact force of the explosion will spread outward along the iron plate, and some debris of the parts will be sprayed out, causing harm to the user's legs and surrounding people.
[0007] II. Technical solutions
[0008] To solve the above technical problems, the utility model provides a technical solution: a pneumatic lifting office chair with explosion-proof device, comprising chair legs, a seat and a pneumatic telescopic rod. The pneumatic telescopic rod connects the chair legs and the seat. An adjusting handle is installed on the top of the pneumatic telescopic rod.
[0009] A connecting frame body is installed on the lower side of the seat. The connecting frame body is fixedly installed on the lower side of the seat. An explosion-proof plate is installed on the top of the inner side of the connecting frame body. A buffer assembly is installed on the lower side of the explosion-proof plate to prevent the adjusting handle and other components from directly impacting the explosion-proof plate.
[0010] A plurality of exhaust holes are arranged on the side wall of the connecting frame body to quickly exhaust the gas in the connecting frame body.
[0011] A bottom plate is arranged on the lower side of the connecting frame body, the upper end of the pneumatic telescopic rod is arranged at the center of the bottom plate, the rod body part of the adjusting handle is arranged inside the connecting frame body, and the handle part is arranged outside the connecting frame body.
[0012] As an improvement, the explosion-proof plate is in a convex structure, and the top of the connecting frame body is provided with a top through hole through which the explosion-proof plate passes.
[0013] As an improvement, the buffer assembly comprises a buffer plate, and a plurality of springs are arranged between the buffer plate and the explosion-proof plate.
[0014] As an improvement, a connecting sleeve is arranged at the center of the bottom plate, a connecting sleeve ring is arranged on the outer side of the upper end of the pneumatic telescopic rod, the connecting sleeve ring passes into the inner side of the connecting sleeve, and the connecting sleeve ring is connected through a plurality of bolts.
[0015] As an improvement, a through hole through which the adjusting handle passes is arranged on one side wall of the connecting frame body, and the adjusting handle is rotationally connected with the inner wall of the through hole.
[0016] As an improvement, a groove is arranged on the lower side of the seat and matched with the top of the connecting frame body, and the top of the connecting frame body and the groove are connected through a plurality of bolts, and the bolt heads are arranged inside the connecting frame body.
[0017] III. Advantages
[0018] Compared with the prior art, the top of the pneumatic telescopic rod is arranged inside the connecting frame body, the top of the pneumatic telescopic rod is covered by the connecting frame body, the explosion-proof plate and the bottom plate, when the pneumatic telescopic rod cylinder explodes, the explosion fragments are prevented from splashing outward, the user and the surrounding people are prevented from being hurt, the upward great impact force is buffered by the buffer plate, the impact force and the fragments are prevented from impacting the explosion-proof plate, the seat is prevented from being vibrated strongly, and the user is prevented from being uncomfortable. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is a whole structure schematic view of the pneumatic lifting office chair with the explosion-proof device.
[0020] Figure 2 It is a seat lower side structure schematic view of the pneumatic lifting office chair with the explosion-proof device.
[0021] Figure 3 It is a pneumatic telescopic rod connecting structure schematic view of the pneumatic lifting office chair with the explosion-proof device.
[0022] Figure 4It is the connecting frame body upper side structure schematic diagram of the pneumatic lifting office chair with explosion-proof device.
[0023] Figure 5 It is the connecting frame body lower side structure schematic diagram of the pneumatic lifting office chair with explosion-proof device.
[0024] Figure 6 It is the connecting frame body section structure schematic diagram of the pneumatic lifting office chair with explosion-proof device.
[0025] Figure 7 It is the bottom plate connecting structure schematic diagram of the pneumatic lifting office chair with explosion-proof device.
[0026] As shown in the figure: 1, chair leg; 2, seat; 3, pneumatic telescopic rod; 4, adjusting handle; 5, connecting frame body; 6, bottom plate; 7, connecting sleeve; 8, connecting sleeve ring; 9, through hole; 10, explosion-proof plate; 11, top through hole; 12, buffer plate; 13, spring; 14, exhaust hole; 15, recess. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0028] As shown in the figures Figure 1 , the figures Figure 2 and the figures Figure 4 , a pneumatic lifting office chair with explosion-proof device, including chair leg 1, seat 2 and pneumatic telescopic rod 3, the pneumatic telescopic rod 3 is connected with chair leg 1 and seat 2, the pneumatic telescopic rod 3 top is provided with adjusting handle 4, the seat 2 lower side is provided with connecting frame body 5, the seat 2 lower side is provided with recess 15 inserted into the top of connecting frame body 5, the top of connecting frame body 5 is limited by recess 15, which is convenient for subsequent installation, the connecting frame body 5 top and recess 15 are connected by a plurality of bolts, the bolt head is located in the inner side of connecting frame body 5, preventing the bolt from being separated from connecting frame body 5 and impacting the lower side of seat 2.
[0029] As shown in the figures Figure 3 , the figures Figure 5 and the figures Figure 7As shown, the lower side of the connecting frame body 5 is provided with a bottom plate 6, the center of the bottom plate 6 is provided with a connecting sleeve 7, the outer side of the upper end of the pneumatic telescopic rod 3 is provided with a connecting sleeve ring 8, the connecting sleeve ring 8 penetrates into the inner side of the connecting sleeve 7, and the upper end of the pneumatic telescopic rod 3 is fixedly installed to the center of the bottom plate 6 through a plurality of bolt connections, one side wall of the connecting frame body 5 is provided with a through hole 9 through which the adjusting handle 4 penetrates out, the rod body part of the adjusting handle 4 is located inside the connecting frame body 5, and the handle part is located outside the connecting frame body 5, the rod body of the adjusting handle 4 is rotationally connected with the inner wall of the through hole 9, and the adjusting handle 4 is pushed downward to facilitate the adjustment of the pneumatic telescopic rod 3.
[0030] In order to prevent the fragments from splashing when the pneumatic telescopic rod 3 explodes violently, as shown in the figure, Figure 6 As shown, the connecting frame body 5 is fixedly installed on the lower side of the seat 2, the inner top of the connecting frame body 5 is provided with an explosion-proof plate 10, the explosion-proof plate 10 is in a convex structure, the top of the connecting frame body 5 is provided with a top through hole 11 through which the explosion-proof plate 10 penetrates out, and the explosion-proof plate 10 is limitingly installed inside the top through hole 11, so that the top of the connecting frame body 5 has strong impact resistance, and the lower side of the explosion-proof plate 10 is provided with a buffer assembly, the buffer assembly includes a buffer plate 12, a plurality of springs 13 are connected between the buffer plate 12 and the explosion-proof plate 10, the upward impact force drives the fragments to hit the buffer plate 12, the buffer plate 12 pushes the plurality of springs 13 to shrink, the upward impact force and the fragments are blocked by the buffer plate 12, the adjusting handle 4 and other components are prevented from directly impacting the explosion-proof plate 10, strong vibration is generated on the seat 2, and discomfort is caused to the user.
[0031] In order to prevent the pressure in the connecting frame body 5 from being too large when exploding, as shown in the figure, Figure 4 As shown, a plurality of exhaust holes 14 are arranged on the side wall of the connecting frame body 5, the gas in the connecting frame body 5 is quickly exhausted, the gas in the pneumatic telescopic rod 3 is prevented from quickly impacting the inside of the connecting frame body 5, the pressure in the connecting frame body 5 is prevented from being too large, and the connecting frame body 5 is prevented from being damaged.
[0032] It should be noted that, in this article, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are 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 explicitly listed or inherent to such a process, method, article or device.
[0033] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
[0034] The above describes the present application and its embodiments, which are not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the present application, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired, without departing from the creative purpose of the present application, without creating a similar structure and embodiment to the technical solution, which should belong to the protection scope of the present application.
Claims
1. A pneumatic lifting office chair with explosion-proof device, comprising a chair leg (1), a seat (2) and a pneumatic telescopic rod (3), the pneumatic telescopic rod (3) connecting the chair leg (1) and the seat (2), and an adjusting handle (4) being installed on the top of the pneumatic telescopic rod (3), characterized in that: a connecting frame (5) is installed on the lower side of the seat (2), the connecting frame (5) is fixedly installed on the lower side of the seat (2), an explosion-proof plate (10) is installed on the top of the inner side of the connecting frame (5), and a buffer assembly is installed on the lower side of the explosion-proof plate (10) to prevent the adjusting handle (4) and other components from directly impacting the explosion-proof plate (10); a plurality of exhaust holes (14) are arranged on the side wall of the connecting frame (5) to quickly exhaust the gas inside the connecting frame (5); a bottom plate (6) is installed on the lower side of the connecting frame (5), the upper end of the pneumatic telescopic rod (3) is installed at the center of the bottom plate (6), and the rod body part of the adjusting handle (4) is located inside the connecting frame (5) and the handle part is located outside the connecting frame (5). The explosion-proof plate (10) is in a convex shape, and the top of the connecting frame (5) is provided with a top through hole (11) through which the explosion-proof plate (10) passes. The buffer assembly comprises a buffer plate (12), and a plurality of springs (13) are connected between the buffer plate (12) and the explosion-proof plate (10). A connecting sleeve (7) is installed at the center of the bottom plate (6), a connecting sleeve ring (8) is installed on the outer side of the upper end of the pneumatic telescopic rod (3), the connecting sleeve ring (8) passes into the inner side of the connecting sleeve (7), and a plurality of bolts are used for connection.
2. The pneumatic lift office chair with an anti-explosion device according to claim 1, characterized in that: A through hole (9) through which the adjusting handle (4) passes is arranged on one side wall of the connecting frame (5), and the adjusting handle (4) is rotationally connected with the inner wall of the through hole (9).
3. The pneumatic lift office chair with an anti-explosion device according to claim 2, characterized in that: A groove (15) into which the top of the connecting frame (5) is inserted is arranged on the lower side of the seat (2), and a plurality of bolts are used for connection between the top of the connecting frame (5) and the groove (15).
4. The pneumatic lift office chair with an anti-explosion device according to claim 1, characterized in that: 5. The pneumatic lift office chair with an anti-explosion device according to claim 1, characterized in that: 6. The pneumatic lift office chair with an anti-explosion device according to claim 1, characterized in that: