Seat drive connection mechanism

Abstract

The utility model discloses a seat drive connecting mechanism, including seat shell, be equipped with elastic drive part in seat shell, be used for and the sliding part of chair back front and back linkage, and the sliding part is connected in seat shell along with the front and back direction sliding, elastic drive part can drive the sliding part always have the tendency of forward sliding, and the bottom surface of seat shell is equipped with with elastic drive part position corresponding dismounting through -hole, and the dismounting through -hole department detachably connected has the closure, through setting up dismounting through -hole and the closure at the bottom end of seat shell, make elastic drive part when replacing, do not have to dismantle whole seat board, only need to take off the closure, make elastic drive part expose, can utilize the tool and replace, have simplified the maintenance process of seat.

Description

Technical Field

[0001] This utility model relates to the field of seats, and in particular to a seat drive connection mechanism. Background Technology

[0002] Compared to traditional chairs with fixed backrests, chairs with adjustable backrests are more sought after and in demand in the market. Their backrests can move back and forth relative to the seat to accommodate diners of different body types, improving back support and seating experience.

[0003] To provide back support for diners of different body types, most existing chairs have backrests that slide back and forth on the seat. For example, one type of chair includes a seat shell and a back support. The seat shell has a seat plate installed on its upper part. The sides of the back support extend into the seat shell and slide back and forth with it. Users can manually move the back support back and forth and adjust the seat depth to make the backrest fit their back. However, this adjustment method is manual, and the back support does not automatically provide adaptive support for the back.

[0004] The applicant wants to place an elastic drive component similar to a gas spring inside the seat shell, so that the side has a constant tendency to slide forward, thereby driving the chair back to automatically conform to the back. However, elastic drive components like gas springs may age or malfunction after long-term use. When replacement is needed, the seat plate needs to be removed, which is inconvenient and the maintenance process is cumbersome. Summary of the Invention

[0005] This utility model provides a seat drive connection mechanism. By setting a disassembly and assembly through hole and a cover at the bottom of the seat shell, the elastic drive component can be replaced without disassembling the entire seat plate. Only the cover needs to be removed to expose the elastic drive component, which can then be replaced using tools, thus simplifying the seat maintenance process.

[0006] The technical solution of this utility model is implemented as follows: A seat drive connection mechanism includes a seat housing, within which is provided an elastic drive member and a sliding part for front-to-back linkage with the seat back. The sliding part is slidably connected within the seat housing in the front-to-back direction. The elastic drive member can drive the sliding part to always have a forward sliding tendency. The bottom surface of the seat housing is provided with a disassembly and assembly through hole corresponding to the position of the elastic drive member, and a cover can be detachably connected to the disassembly and assembly through hole.

[0007] Preferably, the disassembly and assembly through hole is a single hole, the maximum length of the single disassembly and assembly through hole is greater than or equal to the length of the elastic drive component, and the maximum width of the single disassembly and assembly through hole is greater than or equal to the width of the elastic drive component; thus providing sufficient space for disassembly and assembly of the elastic drive component.

[0008] Preferably, the elastic drive member is arranged diagonally downwards, and one end of the elastic drive member protrudes outside the disassembly and assembly through hole; the cover completely seals the part of the elastic drive member that extends outside the housing and the disassembly and assembly through hole; the elastic drive member that is diagonally downwards and has one end protruding outside the disassembly and assembly through hole is easier to disassemble and assemble.

[0009] Preferably, there are two disassembly and assembly through holes, which correspond to the two ends of the elastic drive member respectively. Each disassembly and assembly through hole is detachably connected to the cap; so that after the two caps are removed, the elastic drive member can be disassembled and installed from both ends.

[0010] Preferably, the elastic drive element is arranged diagonally downwards, with one end of the elastic drive element protruding outside one of the disassembly / removal holes; a corresponding cover completely seals the portion of the elastic drive element extending outside the housing and the corresponding disassembly / removal hole; another cover seals the other disassembly / removal hole. The elastic drive element, which is diagonally downwards and has one end protruding outside the disassembly / removal hole, is easier to disassemble and assemble.

[0011] Preferably, there are two disassembly and assembly through holes, which correspond to the positions of the two ends of the elastic drive member respectively; the elastic drive member is arranged obliquely downward, and either end of the elastic drive member protrudes outside the corresponding disassembly and assembly through hole; a single cover is connected to the bottom of the housing, which completely seals the part of the elastic drive member that extends outside the housing and the two disassembly and assembly through holes.

[0012] Preferably, the elastic drive element is a push-pull gas spring disposed between the rear end of the housing and the sliding part, and the push-pull gas spring has a piston rod that always maintains an extended tendency; or, the elastic drive element is a compression spring disposed between the rear end of the housing and the sliding part.

[0013] Preferably, the elastic drive element is a traction gas spring disposed between the front end of the housing and the sliding part, and the traction gas spring has a piston rod that always maintains a retracting tendency; or, the elastic drive element is a tension spring disposed between the front end of the housing and the sliding part.

[0014] Preferably, the cover is detachably connected to the disassembly / removal hole via screws or clips.

[0015] Preferably, the housing has a recessed groove corresponding to the position of the elastic drive component, and the elastic drive component is located in the recessed groove; the disassembly and assembly through hole is opened at the bottom of the recessed groove; the recessed groove can save longitudinal space in the housing.

[0016] The beneficial effects of this utility model, which adopts the above technical solution, are as follows: By setting a disassembly and assembly through hole and a cover at the bottom of the seat shell, the maintenance and replacement process of the elastic drive component is simplified. When replacing, the operator only needs to remove the cover to expose the elastic drive component. After removing the old elastic drive component, the new elastic drive component can be inserted through the disassembly and assembly through hole. The entire disassembly and replacement process does not require the seat plate to be removed, which simplifies the maintenance process and improves the efficiency of seat maintenance.

[0017] The housing has a recessed groove corresponding to the position of the elastic drive component. The elastic drive component can be placed in the recessed groove, which frees up a large longitudinal space inside the housing and optimizes the structural layout inside the housing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the seat's shape; Figure 2 A schematic diagram of the seat drive connection mechanism inside the seat shell; Figure 3 A schematic diagram showing a single cap connected to a matching disassembly / removal through-hole. Figure 4 A cross-sectional view of a single capping location; Figure 5 This is a schematic diagram showing the connection of two caps at the corresponding disassembly / reassembly through-holes. Figure 6 Cross-sectional views of two capping locations; Figure 7 This is a cross-sectional view of a single cap sealing the oblique gas spring and two disassembly through holes in Example 2; Figure 8 This is a cross-sectional view of the two caps blocking the oblique gas spring and the disassembly through hole in Example 2; Figure 9 This is a cross-sectional view of a single cap sealing an oblique gas spring and a single disassembly through-hole in Example 2; Figure 10 This is a schematic diagram of the elastic drive component in Example 3; Figure 11 This is a schematic diagram of another elastic drive component in Example 3; The reference numerals in the attached drawings are as follows: 1-seat housing, 1a-side clearance groove, 11-seat plate, 12-sliding part, 12a-connecting seat, 13-sliding support block, 14-support, 15-roller, 16-sunken groove, 17-groove, 112-first guide groove, 113-second guide groove, 2-backrest, 21-back support, 3-push-pull gas spring, 3a-traction gas spring, 3c-tension spring, 31-control switch, 33-self-locking device, 5-disassembly and assembly through hole, 51-cover. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0021] This utility model has multiple embodiments, and the specific implementation methods are as follows: Example 1: As Figure 1-6 As shown, this embodiment provides a seat drive connection mechanism. The connection mechanism is applied to a seat, which includes a seat shell 1 with an opening at the top. A seat plate 1 is fixedly installed at the opening. The seat shell 1 is provided with an elastic drive member and a sliding part 12 for front-to-back linkage with the backrest 2. The sliding part 12 is slidably connected to the seat shell 1 in the front-to-back direction. The backrest 2 extends forward and downward on both sides to form two back supports 21. The left and right sides of the seat shell 1 are provided with side clearance grooves 1a extending forward and backward. The back supports 21 extend inward to form sliding supports. The two sliding supports are the sliding parts 12. The two sliding supports can be integrally formed or separate from each other. In this embodiment, the two sliding supports are integrally formed. The following explanation is provided: The seat plate 1 is a thin plastic sheet. To prevent it from deforming under downward pressure, a sliding support block 13 is provided on the sliding part 12. The sliding support block 13 protrudes from the upper and lower ends of the sliding part 12 and forms a sliding connection in the front-to-back direction through the first guide groove 112 correspondingly set on the bottom end of the seat plate 1 and the bottom surface of the seat shell 1. The first guide groove 112 is formed by two left-to-right spaced ribs. While guiding the sliding support block 13, it can also strengthen the structure of the seat plate 11 and the seat shell 1. When the sliding support block 13 slides back and forth, it supports between the seat plate 11 and the seat shell 1, ensuring that the sliding part 12 can slide back and forth while supporting the seat plate 1 and preventing its deformation.

[0022] Furthermore, to increase the smoothness of the sliding part 12's forward and backward movement, the sliding part 12 is provided with symmetrical supports 14 on the left and right sides. The supports 14 include two sets of support arms that are symmetrically extended outward and vertically. Each set of support arms is V-shaped, and a roller 15 is installed at the end of the support arm. The corresponding roller 15 contacts the bottom surface of the seat plate 1 and the inner bottom surface of the seat shell 1. The bottom surface of the seat plate 1 and the inner bottom surface of the seat shell 1 are provided with a second guide groove 113 corresponding to the position of the roller 15. The second guide groove 113 is also formed by two left and right spaced ribs to guide the roller 15 forward and backward and prevent the roller 15 from deviating when rolling forward and backward.

[0023] Furthermore, in order to improve the support stability of the support 14, the extension length of each support arm needs to be relatively long so that each set of support arms can form a sufficient front-to-back span. Therefore, the housing 1 is provided with a groove 17 corresponding to the position of the support 14, and the second guide groove 113 is located at the bottom of the groove 17. The presence of the groove 17 allows the support arm to extend a relatively long length, forming a sufficient front-to-back span at the sliding part 12 position, ensuring the stability of the sliding part 12 when sliding back and forth.

[0024] Furthermore, to ensure the backrest 2 always slides forward for back support, the seat shell 1 is equipped with an elastic drive component that acts on the sliding part 21. The elastic drive component is installed between the rear end of the seat shell 1 and the middle position of the sliding part 12, which can drive the sliding part 12 to always have a tendency to slide forward. When the seat plate 1 is fixed on the seat shell 1, the entire seat shell 1 is closed. When the elastic drive component needs to be replaced, the seat plate 1 usually needs to be removed before replacement, but this method is cumbersome. Therefore, in this embodiment, the bottom surface of the seat shell 1 is provided with a disassembly and assembly through hole 5 corresponding to the position of the elastic drive component. A cover 51 is detachably connected to the disassembly and assembly through hole 5. For easy disassembly and assembly, the cover 51 is detachably connected to the disassembly and assembly through hole 5 by screws or buckles. When the elastic drive component needs to be replaced or repaired, only the cover 51 needs to be removed, which improves the replacement efficiency of the elastic drive component.

[0025] Furthermore, while acting on the sliding part 12, the elastic drive component also has its own elasticity. In this embodiment, the elastic drive component is a push-pull gas spring 3 disposed between the rear end of the housing 1 and the sliding part 12. The push-pull gas spring 3 has a piston rod that always maintains an extended tendency. The push-pull gas spring 3 is a self-locking gas spring with a self-locking device 31. The self-locking structure of this type of gas spring is connected to a control switch 33 via a pull wire. The control switch 33 is usually a wrench that is movably connected to the outside of the housing 1. This self-locking structure and control structure are existing structures and will not be described in detail here.

[0026] Furthermore, the elastic drive component can also be a compression spring (not shown) disposed between the rear end of the housing 1 and the sliding part 12; the sliding part 12 and the housing 1 are locked in position by a gear mechanism, that is, the housing 1 is provided with multiple gear holes spaced back and forth (not shown), and a movable locking component (not shown) is installed on the side of the sliding part 12. After the sliding part 12 slides back and forth into position, the locking component can be engaged with the corresponding gear hole.

[0027] Furthermore, taking the push-pull gas spring 3 as an example, it includes a cylinder and a piston rod that are offset vertically from the sliding part 12. The rear end of the cylinder 1 is hinged to the seat shell 1, and the cylinder 1 itself occupies a certain length. Therefore, if the piston rod is directly connected to the sliding part 12, the sliding part 12 cannot continue to move backward when the piston rod retracts into the cylinder, resulting in insufficient backward sliding distance of the backrest 2 and insufficient seat depth adjustment range. Therefore, in this embodiment, the sliding part 12 is provided with a forward-protruding connecting seat 12a. The piston rod of the push-pull gas spring 3 extends beyond the front end of the sliding part 12 and is connected to the connecting seat 12a. The connection method is also hinged. In this way, the connection position between the back support 21 and the sliding part 12 is further back than the front end of the piston rod. When the piston rod retracts into the cylinder, the sliding part 12 will be further back than the front end of the cylinder, thereby improving the seat depth adjustment range.

[0028] Furthermore, in this embodiment, the cover 51 and the disassembly / removal through hole 5 have two structures. In the first structure, The disassembly / reassembly through hole 5 is a single hole. Specifically, the shape of the disassembly / reassembly through hole 5 can be various. In this embodiment, the disassembly / reassembly through hole 5 is a strip-shaped hole. The maximum length of a single disassembly / reassembly through hole 5 is greater than or equal to the length of the elastic drive component, and the maximum width of a single disassembly / reassembly through hole 5 is greater than or equal to the width of the elastic drive component. A larger single disassembly / reassembly through hole 5 can provide more space for replacing the elastic drive component, making it easier to insert a screwdriver or other replacement tools to replace the elastic drive component. In the second structure, there are two disassembly / reassembly through holes 5, and the two disassembly / reassembly through holes 5 correspond to the two ends of the elastic drive component, respectively. Each disassembly / reassembly through hole 5 corresponds to a detachably connected [device / component]. The cover 5 is designed so that the disassembly and assembly through hole 5 occupies a small area on the bottom surface of the housing 1, which also facilitates disassembly and installation from both ends of the elastic drive component after the two covers 51 are removed. Specifically, taking the push-pull gas spring 3 as an example, the operator can use a tool to reach into the corresponding disassembly and assembly through hole 51 to remove the hinge component between the piston rod front end and the connecting seat 12, and the hinge component between the cylinder and the housing 1, so that the entire push-pull gas spring 3 is separated from the sliding part 12 and the housing 1. At this time, press any end of the push-pull gas spring 3 to make it lift up, and slide it out from the corresponding disassembly and assembly through hole 5. This ensures the structural strength of the housing 1 and meets the replacement requirements of the elastic drive component.

[0029] Furthermore, in this embodiment, the elastic drive member is located below the sliding part 12. In order to save the internal space of the housing 1 and optimize the internal structure of the frame 1, the housing 1 is provided with a recessed groove 16 corresponding to the position of the elastic drive member, and the elastic drive member is located in the recessed groove 16. The disassembly and assembly through hole 5 is opened at the bottom of the recessed groove 16. The recessed groove 16 can make the position of the elastic drive member lower, saving the longitudinal space in the housing 1.

[0030] Example 2: Figure 7-9As shown, the difference from the above embodiment is that, in order to facilitate disassembly and assembly by the operator, the elastic drive component is arranged obliquely downward in this embodiment, and any end of the elastic drive component protrudes outside the disassembly and assembly through hole 5; the cover 51 completely seals the part of the elastic drive component that extends outside the housing 1 and the disassembly and assembly through hole 5; for example, in this embodiment, the rear end of the elastic drive component is connected to the rear end of the housing 1, and the elastic drive component is inclined downward from front to back. The rear end of the elastic drive component is still connected inside the housing 1, but its connection position is lower, so that part of the elastic drive component extends downward outside the disassembly and assembly through hole 5; in this embodiment, the number of disassembly and assembly through holes 5 is one. In order to seal the exposed elastic drive component and the disassembly and assembly through hole 5, a single cover 5 is used in this embodiment. The side of the single cover 5 facing the housing 1 is recessed inward to form a receiving groove. The cover 5 is fixedly connected around the disassembly and assembly through hole 5, and the exposed part of the elastic drive component is located in the receiving groove.

[0031] Furthermore, in this embodiment, there can be two disassembly and assembly through holes 5, each corresponding to one of the two ends of the elastic drive member. The rear end of the elastic drive member is connected to the rear end of the housing 1, and the elastic drive member is inclined downward from front to back. The rear end of the elastic drive member is still connected inside the housing 1, but its connection position is lower, so that part of the elastic drive member extends downward beyond the corresponding disassembly and assembly through hole 5. One of the covers 51 is recessed inward on the side facing the housing 1 to form a receiving groove. The cover 51 completely seals the part of the elastic drive member extending beyond the housing 1 and the corresponding disassembly and assembly through hole 5. The other cover 51 seals the other disassembly and assembly through hole 5. Alternatively, for ease of installation, a single cover 51 can be directly connected to the bottom of the housing 1. The single cover 5 is recessed inward on the side facing the housing 1 to form a receiving groove. The single cover 51 completely seals the part of the elastic drive member extending beyond the housing 1 and the two disassembly and assembly through holes 5.

[0032] Example 3: The difference from the above examples is that the elastic drive element in this example is disposed between the sliding part 12 and the front end of the housing 1, such as... Figure 10-11 As shown, in this embodiment, the elastic drive element is a traction gas spring 3a disposed between the front end of the housing 1 and the sliding part 12. The traction gas spring 3a is also connected to a corresponding self-locking device 31, a pull cable, and a control switch 33. The traction gas spring 3a has a piston rod that always maintains a retracting tendency. The piston rod always tends to pull the sliding part 12 forward. Alternatively, the elastic drive element is a tension spring 3c disposed between the front end of the housing 1 and the sliding part 12.

[0033] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A seat drive connection mechanism, characterized in that, Includes a seat shell (1), inside which is provided an elastic drive member and a sliding part (12) for linkage with the backrest (2) in the front and back direction. The sliding part (12) is slidably connected in the seat shell (1) in the front and back direction. The elastic drive member can drive the sliding part (12) to always have a tendency to slide forward. The bottom surface of the seat shell (1) is provided with a disassembly and assembly through hole (5) corresponding to the position of the elastic drive member. A cover (51) can be detachably connected to the disassembly and assembly through hole (5).

2. The seat drive connection mechanism according to claim 1, characterized in that: The disassembly and assembly through hole (5) is a single one. The maximum length of a single disassembly and assembly through hole (5) is greater than or equal to the length of the elastic drive component, and the maximum width of a single disassembly and assembly through hole (5) is greater than or equal to the width of the elastic drive component.

3. The seat drive connection mechanism according to claim 2, characterized in that: The elastic drive is arranged obliquely downward, and any end of the elastic drive protrudes outside the disassembly and assembly through hole (5); the cover (51) completely seals the part of the elastic drive that extends beyond the housing (1) and the disassembly and assembly through hole (5).

4. The seat drive connection mechanism according to claim 1, characterized in that: There are two disassembly and assembly through holes (5), which correspond to the two ends of the elastic drive member respectively. Each disassembly and assembly through hole (5) is detachably connected to the cover (51).

5. The seat drive connection mechanism according to claim 4, characterized in that: The elastic drive is arranged diagonally downward, and one end of the elastic drive is exposed outside one of the disassembly and assembly through holes (5); the corresponding cover (51) completely seals the part of the elastic drive that extends outside the housing (1) and the corresponding disassembly and assembly through hole (5); another cover (51) seals the other disassembly and assembly through hole (5).

6. The seat drive connection mechanism according to claim 1, characterized in that: There are two disassembly and assembly through holes (5), which correspond to the positions of the two ends of the elastic drive member respectively; the elastic drive member is arranged obliquely downward, and any end of the elastic drive member is exposed outside the corresponding disassembly and assembly through hole (5); a single cover (51) is connected to the bottom of the housing (1), and the single cover (51) completely seals the part of the elastic drive member that extends outside the housing (1) and the two disassembly and assembly through holes (5).

7. The seat drive connection mechanism according to claim 1, characterized in that: The elastic drive element is a push-pull gas spring (3) disposed between the rear end of the housing (1) and the sliding part (12), and the push-pull gas spring (3) has a piston rod that always maintains an extension tendency; or, the elastic drive element is a compression spring disposed between the rear end of the housing (1) and the sliding part (12).

8. The seat drive connection mechanism according to claim 1, characterized in that: The elastic drive element is a traction gas spring (3a) disposed between the front end of the housing (1) and the sliding part (12), and the traction gas spring (3a) has a piston rod that always maintains a retracting tendency; or, the elastic drive element is a tension spring (3c) disposed between the front end of the housing (1) and the sliding part (12).

9. The seat drive connection mechanism according to claim 1, characterized in that: The cover (51) is detachably connected to the disassembly and assembly through hole (5) by screws or clips.

10. The seat drive connection mechanism according to claim 1, characterized in that: The housing (1) is provided with a recess (16) corresponding to the position of the elastic drive member, and the elastic drive member is located in the recess (16); the disassembly and assembly through hole (5) is opened at the bottom of the recess (16).

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