Seat cushion adjusting mechanism

Abstract

The utility model discloses a cushion adjusting mechanism which comprises a fixed support, a sliding piece, a telescopic air cylinder, a positioning pin and a connecting rod mechanism. The sliding piece is used for being connected with the cushion, is arranged on the periphery of the fixed support in a sleeving mode and is driven by the telescopic air cylinder to slide up and down along the fixed support; a plurality of positioning holes distributed in the height direction of the fixed support are formed in the fixed support, a positioning pin is arranged on the sliding piece, and the positioning pin is connected with a connecting rod mechanism; the connecting rod mechanism drives the positioning pin to move and be inserted into the positioning hole so as to limit sliding of the sliding piece relative to the fixed support. Or the positioning pin is driven to be separated from the positioning hole, so that the sliding piece freely slides relative to the fixed bracket. The cushion adjusting mechanism can flexibly, quickly and accurately adjust the height of the cushion, is stable in structure, and effectively avoids the shaking or displacement phenomenon possibly occurring in the using process.

Description

Technical Field

[0001] The utility model relates to the technical field of fitness equipment, in particular to a seat cushion adjustment mechanism. Background Art

[0002] In the field of fitness equipment design, with people's increasing emphasis on healthy living and improved fitness awareness, the diversity and functionality of fitness equipment have become the focus of market attention. Different user groups have increasingly personalized demands for fitness equipment, especially for the comfort and adjustment flexibility of seat cushions. Traditional fitness equipment seat adjustment methods, such as manually loosening and tightening bolts to adjust the height, are not only cumbersome and laborious to operate, but also often difficult to achieve precise position control during the adjustment process. In addition, this mechanical locking structure is prone to loosening during long-term use or high-intensity exercise, resulting in a decrease in the stability of the seat cushion, which is prone to shaking or displacement during use. This not only affects the comfort and safety of exercise, but may also cause unnecessary harm to the user's body due to unstable support. Utility Model Content

[0003] The purpose of the utility model is to provide a seat cushion adjustment mechanism that can flexibly, quickly and accurately adjust the height of the seat cushion, and has a stable structure, effectively avoiding shaking or displacement that may occur during use.

[0004] To achieve the above-mentioned object, the solution of the present utility model is as follows: a seat cushion adjustment mechanism, comprising a fixed bracket, a sliding member, a telescopic cylinder, a positioning pin and a connecting rod mechanism;

[0005] The sliding member is used to connect the seat cushion, and the sliding member is sleeved on the outer periphery of the fixed bracket and is driven by the telescopic cylinder to slide up and down along the fixed bracket;

[0006] The fixed bracket is provided with a plurality of positioning holes distributed along its height direction, and the sliding member is provided with a positioning pin, which is connected to a connecting rod mechanism; the connecting rod mechanism drives the positioning pin to move and insert into the positioning hole to limit the sliding member from sliding relative to the fixed bracket; or drives the positioning pin to disengage from the positioning hole to allow the sliding member to slide freely relative to the fixed bracket.

[0007] Furthermore, the connecting rod mechanism includes a rocker rod and a connecting rod, the rotating end of the rocker rod is rotatably connected to the sliding member, the inner end of the connecting rod is hinged to the positioning pin, and the outer end of the connecting rod is hinged to the swinging end of the rocker rod; when the rocker rod rotates around its rotating end, its swinging end drives the connected connecting rod to move, and then drives the positioning pin to move, inserting into or out of the positioning hole.

[0008] Furthermore, the telescopic cylinder is a single-acting cylinder, the cylinder body of the single-acting cylinder is connected to the sliding member, and the piston rod of the single-acting cylinder is connected to the fixed bracket.

[0009] Furthermore, a pin seat is fixed on the sliding member, and a movable cavity running through the pin seat is opened on the pin seat, and the positioning pin is passed through the movable cavity.

[0010] Furthermore, the middle portion of the positioning pin extends radially outward to form a step, and an elastic member is provided between the step of the positioning pin and the movable cavity, with one end of the elastic member abutting the step and the other end abutting the end of the movable cavity away from the positioning hole.

[0011] Furthermore, the side of the fixed bracket is provided with a slide rail extending along its height direction, and the sliding piece is provided with a pulley assembly at a position corresponding to the slide rail. The pulley assembly is placed on the slide rail and moves along the slide rail under the action of external force, thereby causing the sliding piece to move along the fixed bracket.

[0012] Furthermore, a slide rail is provided on each side of the fixing bracket, and the two slide rails are symmetrical to each other.

[0013] Furthermore, the sliding member is connected to an assembly component for installing a seat cushion, and the assembly component includes a vertical plate and an inclined plate. The vertical plate is fixed on the sliding member, the inclined plate is vertically fixed on the vertical plate, and the seat cushion is mounted on the inclined plate.

[0014] Furthermore, the sliding member includes a front cover and a rear cover, and the front cover and the rear cover are fixed by fasteners and enclosed on the periphery of the fixing bracket.

[0015] Furthermore, a gear mark is provided at the positioning hole on the fixing bracket.

[0016] After adopting the above solution, the beneficial effects of the utility model are:

[0017] The seat adjustment mechanism of this utility model utilizes a fixed bracket, a sliding member, and a telescopic cylinder to achieve adjustable seat height, meeting the fitness needs of users with different body shapes. Furthermore, a locking mechanism consisting of a positioning pin and a positioning hole not only ensures the seat is securely locked after adjustment to the desired position, but also effectively prevents shaking and displacement that may occur with prolonged use or high-intensity exercise, ensuring user safety and effective exercise. Furthermore, this locking mechanism offers high flexibility and reliability. Driven by a connecting rod mechanism, the positioning pin can be quickly inserted and removed, providing easy operation and a secure locking state, offering users a superior fitness experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the seat cushion adjustment mechanism of an embodiment of the present utility model (front view);

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the seat cushion adjustment mechanism of an embodiment of the present invention (from the back);

[0020] Figure 3 This is an exploded view of the seat cushion adjustment mechanism according to an embodiment of the present invention;

[0021] Figure 4 This is a cross-sectional view of the seat cushion adjustment mechanism of an embodiment of the present utility model (low position, locked state);

[0022] Figure 5 This is a cross-sectional view of the seat cushion adjustment mechanism of an embodiment of the present utility model (low position, unlocked state);

[0023] Figure 6 This is a cross-sectional view of the seat cushion adjustment mechanism of an embodiment of the present utility model (high position, locked state);

[0024] Figure 7 yes Figure 6 A partial enlarged view of point B in the middle.

[0025] Description of labels:

[0026] 1. Fixed bracket; 11. Positioning hole; 12. Slide rail; 13. Gear position mark; 2. Sliding part; 21. Front cover; 22. Rear cover; 3. Telescopic cylinder; 31. Cylinder body; 32. Piston rod; 4. Assembly component; 41. Vertical plate; 42. Inclined plate; 5. Locating pin; 51. Step; 6. Pin seat; 61. Movable cavity; 7. Pulley assembly; 8. Connecting rod mechanism; 81. Rocker arm; 82. Connecting rod; 9. Elastic part; 10. Seat cushion. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] The utility model provides a seat cushion adjustment mechanism, such as Figures 1 to 7 As shown, the fitness equipment comprises a fixed bracket 1, a sliding member 2, a telescopic cylinder 3, a positioning pin 5, and a connecting rod mechanism 8. The fixed bracket 1 is the main component supporting the ground and the fitness equipment body. The sliding member 2 is used to slide the seat cushion 10 to the fixed bracket 1.

[0029] In this embodiment, the slider 2 includes a front cover 21 and a rear cover 22, which are fixedly connected to each other by fasteners such as bolts. The front cover 21 and the rear cover 22 surround the outer periphery of the fixed bracket 1. The telescopic cylinder 3 has one fixed end and one output end connected to the rear cover 22, while the other end is connected to the fixed bracket 1. When the telescopic cylinder 3 is in operation, it drives the slider 2 to slide up and down relative to the fixed bracket 1.

[0030] The seat cushion 10 is mounted on the sliding member 2 through the assembly component 4. The specific structure is as follows: Figure 3As shown, the assembly component 4 includes a vertical plate 41 and an inclined plate 42 . The vertical plate 41 is fixed to the front cover 21 of the slider 2 . Two inclined plates 42 are vertically fixed to the vertical plate 41 . The seat cushion 10 is mounted on the inclined plates 42 .

[0031] To facilitate the sliding of slider 2, this design features slide rails 12 extending along the height of fixed bracket 1. To enhance structural stability, a slide rail 12 is positioned symmetrically on each side of fixed bracket 1. Correspondingly, a pulley assembly 7 is positioned on the front cover 21 of slider 2, corresponding to the slide rails 12. Each pulley assembly 7 includes four pulleys, each mounted on a slide rail 12. Driven by the telescopic cylinder 3, slider 2 moves along fixed bracket 1, and the pulleys move along the slide rails 12.

[0032] A locking mechanism is provided between the sliding member 2 and the fixed bracket 1. The locking mechanism includes a plurality of locating holes 11 and locating pins 5. These locating holes 11 are provided on the fixed bracket 1 and are spaced apart along the height direction of the fixed bracket 1. The locating pins 5 are provided on the sliding member 2 and move synchronously with the sliding member 2. The locating pins 5 are installed via a pin holder 6. The pin holder 6 is inserted through the vertical plate 41 and the front cover 21 and is fixed relative to the front cover 21. The pin holder 6 has a movable cavity 61 extending therethrough, and the locating pins 5 are movable within this movable cavity 61.

[0033] The outer end of the positioning pin 5 is connected to a connecting rod mechanism 8. The connecting rod mechanism 8 is used to drive the positioning pin 5 to move and insert into the positioning hole 11, thereby limiting the sliding member 2 from sliding relative to the fixed bracket 1; or to drive the positioning pin 5 out of the positioning hole 11, so that the sliding member 2 can slide freely relative to the fixed bracket 1. In this embodiment, Figures 3 to 7 As shown, the link mechanism 8 includes a rocker 81 and a connecting rod 82. The rotating end of the rocker 81 is rotatably connected to the slant plate 42, while the inner end of the connecting rod 82 is hinged to the positioning pin 5, and the outer end of the connecting rod 82 is hinged to the swing end of the rocker 81. In this way, when the rocker 81 rotates around its rotating end, as shown in FIG. Figures 4 to 7 As shown at point A, the swing end will swing, driving the connected connecting rod 82 to move, and further driving the positioning pin 5 to move, so as to be inserted into or removed from the positioning hole 11.

[0034] As a further improvement to the structure, the middle portion of the locating pin 5 extends radially outward to form a step 51. An elastic member 9 is provided between the step 51 of the locating pin 5 and the movable cavity 61. One end of the elastic member 9 abuts against the step 51, and the other end abuts against the end of the movable cavity 61 away from the locating hole 11. When an external force is applied to the connecting rod mechanism 8 to move the locating pin 5 away from the locating hole 11, the locating pin 5 will cause the elastic member 9 to deform. When the external force applied to the connecting rod mechanism 8 is removed, the locating pin 5 is acted upon by the restoring force of the elastic member 9 and will be inserted into the locating hole 11 again. The elastic member 9 can also continuously press the locating pin 5 in the locating hole 11, reducing the possibility of the locating pin 5 loosening or detaching from the locating pin 5 in the non-operating state, thereby improving the stability of the seat cushion 10 in use.

[0035] like Figure 1 and Figure 2 As shown, the positioning pin 5, the pin seat 6 and the connecting rod mechanism 8 are all hidden in the space enclosed by the vertical plate 41 and the two inclined plates 42 of the assembly component 4. This can avoid unnecessary interference and make the appearance of the product more beautiful.

[0036] Furthermore, a gear mark 13 is provided on the side of the positioning hole 11 on the fixing bracket 1, such as Figure 1 As shown, specifically, there are digital markings, which can provide users with clear height gear instructions.

[0037] In this embodiment, the telescopic cylinder 3 is preferably a single-acting cylinder. The working principle of the single-acting cylinder is as follows: when compressed air is injected into the working chamber, the piston and the piston rod 32 are pushed to move in one direction; and when it is necessary to return, the piston and the piston rod 32 are pulled back to their original position by external force. Figure 3 As shown, the cylinder body 31 of the single-acting cylinder is connected to the rear cover 22 , and the piston rod 32 of the single-acting cylinder is connected to the fixed bracket 1 .

[0038] The working principle of the air cushion adjustment mechanism of the utility model is as follows:

[0039] Figure 4 The seat cushion is shown in the lowered position with the retaining pin locked.

[0040] When the seat cushion 10 needs to be raised, the rocker 81 is manually moved upwards, and the rocker 81 swings around point A to pull the connecting rod and the positioning pin 5 outwards until the positioning pin 5 is completely out of the positioning hole 11. At this time, Figure 5As shown, the sliding member 2 and the fixing bracket 1 are in an unfixed and freely movable state. The air pressure in the cylinder 31 applies a downward thrust to the piston rod 32, and the reaction force pushes the cylinder 31 together with the rear cover 22 of the sliding member 2 to move upward, thereby driving the seat cushion 10 to rise. After the seat cushion 10 rises to the required height, or when the cylinder 31 moves to the extreme position, the rocker arm 81 is released, the positioning pin 5 is inserted into the corresponding positioning hole 11, and the seat cushion 10 no longer moves, that is, the height adjustment operation of the seat cushion 10 is completed. The state is as shown in FIG. Figure 6 and Figure 7 shown.

[0041] When the seat cushion 10 needs to be lowered, the rocker 81 is manually moved upward to disengage the positioning pin 5 from the positioning hole 11. Then, the user presses the seat cushion 10 downward by his own weight or external force. The seat cushion 10 drives the cylinder 31 and the sliding member 2 to move downward. After the seat cushion 10 drops to the desired height, the rocker 81 is released, the positioning pin 5 is inserted into the corresponding positioning hole 11, and the seat cushion 10 no longer moves. This completes the lowering operation of the seat cushion 10. Figure 6 to Figure 4 shown.

[0042] To further illustrate various embodiments, the present invention is provided with accompanying drawings. These drawings form part of the disclosure of this invention and are primarily used to illustrate the embodiments and, in conjunction with the relevant description in the specification, to explain the operating principles of the embodiments. By referring to these drawings, those skilled in the art will understand other possible implementations and the advantages of this invention. The components in the figures are not drawn to scale, and similar reference numerals are generally used to represent similar components.

[0043] At the same time, the directions such as front, back, left, and right involved in this embodiment are only used as a reference for directions and do not represent directions in actual use. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the design of this case. Any equivalent changes made based on the key design of this case shall fall within the scope of protection of this case.

Claims

1. A seat cushion adjustment mechanism, characterized in that: It includes a fixed bracket, a sliding member, a telescopic cylinder, a positioning pin and a connecting rod mechanism; The sliding member is used to connect the seat cushion, and the sliding member is sleeved on the outer periphery of the fixed bracket and is driven by the telescopic cylinder to slide up and down along the fixed bracket; The fixed bracket is provided with a plurality of positioning holes distributed along its height direction, and the sliding member is provided with a positioning pin, which is connected to a connecting rod mechanism; the connecting rod mechanism drives the positioning pin to move and insert into the positioning hole to limit the sliding member from sliding relative to the fixed bracket; or drives the positioning pin to disengage from the positioning hole to allow the sliding member to slide freely relative to the fixed bracket.

2. A seat cushion adjustment mechanism according to claim 1, characterized in that: The connecting rod mechanism includes a rocker rod and a connecting rod, the rotating end of the rocker rod is rotatably connected to the sliding member, the inner end of the connecting rod is hinged to the positioning pin, and the outer end of the connecting rod is hinged to the swinging end of the rocker rod; when the rocker rod rotates around its rotating end, its swinging end drives the connected connecting rod to move, and then drives the positioning pin to move, inserting into or out of the positioning hole.

3. The seat cushion adjustment mechanism according to claim 1, characterized in that: The telescopic cylinder is a single-acting cylinder, the cylinder body of the single-acting cylinder is connected to the sliding member, and the piston rod of the single-acting cylinder is connected to the fixed bracket.

4. The seat cushion adjustment mechanism according to claim 1, characterized in that: A pin seat is fixed on the sliding member. The pin seat is provided with an active cavity which passes through the pin seat. The positioning pin is passed through the active cavity.

5. The seat cushion adjustment mechanism according to claim 1, characterized in that: The middle part of the positioning pin extends radially outward to form a step. An elastic member is provided between the step of the positioning pin and the movable cavity. One end of the elastic member abuts the step, and the other end abuts the end of the movable cavity away from the positioning hole.

6. The seat cushion adjustment mechanism according to claim 1, characterized in that: The side of the fixed bracket is provided with a slide rail extending along its height direction. The sliding piece is provided with a pulley assembly at a position corresponding to the slide rail. The pulley assembly is placed on the slide rail and moves along the slide rail under the action of external force, thereby causing the sliding piece to move along the fixed bracket.

7. A seat cushion adjustment mechanism according to claim 6, characterized in that: A slide rail is provided on each side of the fixing bracket, and the two slide rails are symmetrical to each other.

8. The seat cushion adjustment mechanism according to claim 1, characterized in that: The sliding member is connected with an assembly component for installing a seat cushion. The assembly component includes a vertical plate and an inclined plate. The vertical plate is fixed on the sliding member, the inclined plate is vertically fixed on the vertical plate, and the seat cushion is carried on the inclined plate.

9. The seat cushion adjustment mechanism according to claim 1, characterized in that: The sliding member includes a front cover and a rear cover, which are fixed by fasteners and enclosed on the periphery of the fixing bracket.

10. The seat cushion adjustment mechanism according to claim 1, characterized in that: A gear mark is provided at the positioning hole of the fixing bracket.

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