Pedal mechanism on high-speed rail business seat
By adding a torsion spring tensioning mechanism to the footrest mechanism of the high-speed rail business class seat, the problem of torsion spring failure was solved, the service life of the torsion spring was extended, and maintenance costs were reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-12
- Publication Date
- 2026-04-03
AI Technical Summary
In the footrest mechanism of high-speed rail business class seats, the torsion spring is prone to losing its elasticity after long-term use, causing the footrest to fail to rebound, which increases maintenance costs.
A torsion spring tensioning mechanism is added to the foot pedal mechanism. By adjusting the rotation angle of the tensioning disc on the torsion spring tensioning mechanism, the spring torque is increased, thus preventing torsion spring failure and reducing maintenance costs.
By adding a torsion spring tensioning mechanism, the elasticity of the torsion spring can be maintained during long-term use, reducing the need for torsion spring replacement and lowering maintenance costs.
Smart Images
Figure CN224075559U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of train seat technology, specifically to a footrest mechanism for a high-speed rail business class seat. Background Technology
[0002] Business class seats are seats provided for business passengers on high-speed trains. Compared with ordinary seats, business class seats have more adjustment functions in their design; for example, a footrest is usually set on the back of the seat, and a foot pedal mechanism is installed at the bottom of the footrest.
[0003] Figure 1 As shown; a rotatable foot pedal is installed on the foot pedal mechanism at a position away from the rear passenger. This foot pedal is convenient for passengers to use to push their feet. Under normal circumstances, a torsion spring connects the back of the foot pedal to the foot pedal chamber. The torsion spring is set so that the foot pedal is reversed and blocked at the bottom of the foot pedal chamber, forming a hidden space for passengers to put their shoes.
[0004] During long-term use of the foot pedal mechanism, the inventors discovered that when passengers put their shoes into the concealed shoe storage space, they need to frequently flip the foot pedal to open the space and put their shoes in. Over time, this causes the torsion spring in that area to lose its function, and the foot pedal cannot rebound, requiring the replacement of the torsion spring and increasing maintenance costs. Therefore, how to solve the above-mentioned technical problem is a technical problem that those skilled in the art urgently need to solve.
[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content
[0006] To address the aforementioned technical problems, this utility model provides a footrest mechanism for a high-speed rail business class seat, thereby solving the problems mentioned in the background section.
[0007] This utility model provides the following technical solution: a foot pedal mechanism for a high-speed rail business seat, which is assembled on the foot pedal compartment on the back of the business seat; including: a mounting base, a foot pedal, a rotating shaft, a torsion spring, and a torsion spring tensioning mechanism;
[0008] Mounting seats are fixed in pairs at intervals on the bottom plate of the foot pedal chamber; each mounting seat is fixedly connected to an independent rotating shaft; the back of the foot pedal is rotatably connected to the two rotating shafts respectively;
[0009] Each pivot is connected to an independent torsion spring and an independent torsion spring tensioning mechanism; the first end of the torsion spring is fixed to the back of the pedal plate, and the second end of the torsion spring is connected to the torsion spring tensioning mechanism.
[0010] Among them, the external force control torsion spring tensioning mechanism rotates in the direction of the torsion spring helix, which can increase the elastic torque of the torsion spring.
[0011] Preferably, the torsion spring tensioning mechanism includes a tensioning disc, a limiting block, and a spring;
[0012] The tensioning disc is coaxially fixed on the rotating shaft; the inner ring of the tensioning disc is provided with ratchet grooves arranged in a circular pattern at intervals;
[0013] A mounting groove is provided on the rotating shaft at the position of the inner ring of the tensioning disc, and the spring is fixed in the mounting groove;
[0014] The limiting block is set in the mounting groove, and the bottom of the limiting block is fixedly connected to the upper end of the spring;
[0015] The top of the limiting block is inserted into the ratchet groove of the inner ring of the tensioning disc; the top surface of the limiting block is provided with an inclined surface that matches the shape of the ratchet groove.
[0016] Preferably, the outer ring of the tensioning disc is provided with multiple straight retaining edges connected in series.
[0017] Preferably, the torsion spring tensioning mechanism further includes baffles, with baffles provided on both sides of the tensioning disc and the baffles fixed on the rotating shaft.
[0018] Preferably, the rotating shaft has annular grooves on both sides of the tensioning disc, and the baffle has a notch that mates with the annular grooves; the baffle is inserted into and limited in the annular grooves of the rotating shaft through the notch.
[0019] The foot pedal mechanism for a high-speed rail business seat provided in this embodiment of the utility model has the following beneficial effects: This utility model has developed a foot pedal mechanism for a high-speed rail business seat, and a torsion spring tensioning mechanism is added to the foot pedal mechanism. Controlling the operation of the torsion spring tensioning mechanism can increase the spring torque. In long-term use, only the rotation angle of the tensioning disc on the torsion spring tensioning mechanism needs to be adjusted, so that the torsion spring can be used for a long time without replacing the torsion spring, thus reducing maintenance costs. Attached Figure Description
[0020] Figure 1 A schematic diagram of the foot pedal mechanism mounted on a business chair;
[0021] Figure 2 This is a structural schematic diagram of the present invention from the first lateral direction;
[0022] Figure 3 This is a structural schematic diagram of the second side of this utility model;
[0023] Figure 4 This is a schematic diagram of the structure of this utility model after the foot pedals have been removed;
[0024] Figure 5 This utility model Figure 3 A magnified view of part B in the image;
[0025] Figure 6 This utility model Figure 4 A magnified view of part C;
[0026] Figure 7 This utility model Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;
[0027] Figure 8 For the present utility model to Figure 7 A schematic diagram of the structure of the torsion spring tensioning mechanism for rotational operation. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0029] See Figures 1-8 To address the problems mentioned in the background section, this utility model provides a footrest mechanism for a high-speed rail business class seat to solve the aforementioned technical problems. The technical solution is as follows:
[0030] A footrest mechanism for a high-speed rail business class seat is mounted on the footrest compartment 110 on the back of the business class seat 100; it includes: a mounting base 210, a footrest plate 220, a rotating shaft 230, a torsion spring 240, and a torsion spring tensioning mechanism.
[0031] Mounting seats 210 are fixed in pairs at intervals on the base plate 111 of the foot pedal chamber 110; each mounting seat 210 is fixedly connected to an independent rotating shaft 230; the back of the foot pedal 220 is rotatably connected to the two rotating shafts 230 respectively.
[0032] Each pivot 230 is connected to an independent torsion spring 240 and an independent torsion spring tensioning mechanism; the first end of the torsion spring 240 is fixed to the back of the foot pedal 220, and the second end of the torsion spring 240 is connected to the torsion spring tensioning mechanism.
[0033] Among them, the external force control torsion spring tensioning mechanism rotates along the helical direction of the torsion spring 240, which can increase the elastic torque of the large torsion spring 240.
[0034] In this embodiment, the torsion spring tensioning mechanism includes a tensioning disc 250, a limiting block 280, and a spring 240;
[0035] The tensioning disc 250 is coaxially fixed on the rotating shaft 230; the inner ring of the tensioning disc 250 is provided with ratchet grooves arranged in a circular pattern at intervals;
[0036] A mounting groove 231 is provided on the rotating shaft 230 at the inner ring position of the tensioning disc 250, and the spring 240 is fixed in the mounting groove 231;
[0037] The limiting block 280 is set in the mounting groove 231, and the bottom of the limiting block 280 is fixedly connected to the upper end of the spring 240;
[0038] The top of the limiting block 280 is inserted into the ratchet groove of the inner ring of the tensioning disc 250; the top surface of the limiting block 280 is provided with an inclined surface that matches the shape of the ratchet groove.
[0039] Figure 7-8 As shown; when adjusting the tension of torsion spring 240, use a tool to control the drive tensioning disc 250 from... Figure 7 Rotate clockwise to Figure 8 When the tensioning disc 250 rotates clockwise (i.e., in the spiral direction of the torsion spring 240), it can drive the torsion spring 240 to increase the elastic torque; when the tensioning disc 250 rotates clockwise, it drives the limiting block 280 to move downward. When the tensioning disc 250 rotates to the point where the torsion spring 240 can drive the foot pedal 220 to rebound torque, the limiting block 280 is re-inserted into the ratchet groove of the inner ring of the tensioning disc 250 through the rebound of the spring 240, which can lock the tensioning disc 250 and prevent it from rotating backward.
[0040] In this embodiment, the outer ring of the tensioning disc 250 is provided with multiple straight retaining edges 251 connected in series; this design allows the tensioning disc 250 to present a polygonal shape, such as a quadrilateral, pentagon, or hexagon, making it convenient for workers to control the rotation of the tensioning disc 250 with a wrench.
[0041] In this embodiment, the torsion spring tensioning mechanism further includes baffles 260. Baffles 260 are provided on both sides of the tensioning disc 250 and are fixed to the rotating shaft 230. The baffles 260 on both sides of the tensioning disc 250 prevent the limiting block 280 from jumping out of the ratchet groove and improve the stability of the torsion spring tensioning mechanism.
[0042] In this embodiment, the rotating shaft 230 is provided with annular grooves on both sides of the tensioning disc 250, and the baffle 260 is provided with a notch that mates with the annular grooves; the baffle 260 is inserted into and limited in the annular grooves of the rotating shaft 230 through the notch.
[0043] In this embodiment, a partition 120 is provided above the foot pedal mechanism in the foot pedal compartment 110. The partition 120 can divide the space of the foot pedal compartment 110, and the space above the partition 120 can be used for rear passengers to store backpacks and other luggage. A foot pedal seat 130 is provided in front of the foot pedal mechanism in the foot pedal compartment 110.
[0044] The foot pedal mechanism for a high-speed rail business seat provided in this embodiment of the utility model has the following beneficial effects: This utility model has developed a foot pedal mechanism for a high-speed rail business seat, and a torsion spring tensioning mechanism is added to the foot pedal mechanism. Controlling the operation of the torsion spring tensioning mechanism can increase the spring torque. In long-term use, only the rotation angle of the tensioning disc on the torsion spring tensioning mechanism needs to be adjusted, so that the torsion spring can be used for a long time without replacing the torsion spring, thus reducing maintenance costs.
[0045] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.
[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0047] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and concept of this utility model, and all such substitutions or changes should fall within the protection scope of the appended claims.
Claims
1. A footrest mechanism for a high-iron business seat, which is assembled on a footrest chamber of a back of the business seat; characterized in that, The utility model relates to a pedal device of a bicycle, which comprises: a mounting seat, a pedal plate, a rotating shaft, a torsion spring and a torsion spring tensioning mechanism; the mounting seat is fixed in pairs at intervals on the bottom plate of the pedal chamber; each mounting seat is fixedly connected with an independent rotating shaft; the back side of the pedal plate is rotatably connected with the two rotating shafts respectively; each rotating shaft is connected with an independent torsion spring and an independent torsion spring tensioning mechanism; the first end of the torsion spring is fixed on the back side of the pedal plate, and the second end of the torsion spring is connected with the torsion spring tensioning mechanism; wherein, the torsion spring tensioning mechanism is controlled by external force to rotate along the spiral direction of the torsion spring, so as to increase the elastic torque of the torsion spring.
2. The footrest mechanism according to claim 1, wherein: The torsion spring tensioning mechanism comprises a tensioning disc, a limiting block and a spring; the tensioning disc is coaxially fixed on the rotating shaft; the inner circle of the tensioning disc is provided with a circularly arranged ratchet groove at intervals; an installation groove is formed on the rotating shaft at the position of the inner circle of the tensioning disc, and the spring is fixed in the installation groove; the limiting block is arranged in the installation groove, and the bottom of the limiting block is fixedly connected with the upper end of the spring; the top of the limiting block is inserted into the ratchet groove of the inner circle of the tensioning disc; and the top surface of the limiting block is provided with an inclined surface matched with the shape of the ratchet groove.
3. The footrest mechanism according to claim 2, wherein: a plurality of linear clamping edges are arranged on the outer circle of the tensioning disc in a first-to-last manner.
4. The footrest mechanism of claim 2, wherein: The torsion spring tensioning mechanism further comprises a baffle, and the baffle is arranged on each side of the tensioning disc and fixed on the rotating shaft.
5. The footrest mechanism according to claim 3, wherein: an annular clamping groove is arranged on the rotating shaft at the two sides of the tensioning disc, and a notch matched with the annular clamping groove is arranged on the baffle; the baffle is inserted and limited on the annular clamping groove of the rotating shaft through the notch.