Seat sliding connection mechanism

Abstract

The utility model provides a seat sliding connection mechanism which comprises a base and a seat shell above the base, and a sliding groove which extends front and back and is used for being in sliding fit with a matching part on a seat back is formed in the seat shell in a penetrating mode. A sliding connection assembly is arranged between the seat shell and the base, the sliding connection assembly comprises a base and a sliding piece, and the sliding piece is connected to the base in a sliding mode in the front-back direction; the sliding piece is arranged on the outer bottom face of the base shell and staggered from the sliding groove left and right. The base is arranged at the top end of the base. According to the whole sliding connection structure, a sliding groove does not need to be formed in the base shell, screws do not need to be used for limiting in the sliding groove, and the sliding connection assembly is arranged between the base shell and the base, so that the area of a cavity in the base shell is reduced, and the structural strength and the service life of the base shell are guaranteed; and the seat shell can smoothly slide back and forth relative to the base through the matching between the sliding piece and the sliding base.

Description

Technical Field

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

[0002] Most office chairs for adults and study chairs for children on the market are equipped with casters on the chair legs. To adjust the distance between the front edge of the chair seat and the table, simply pull the chair to make the casters roll, and the position between the front edge of the chair seat and the table will be adjusted. However, since the casters are prone to slipping when in contact with the floor, after prolonged use, the chair may also shift from its initial position due to the interaction between the body and the table. At this time, the user must move their body again and adjust the distance between the front edge of the chair seat and the table.

[0003] To address the aforementioned issues, the applicant previously filed a patent application for a seat configuration and usage method, such as CN118402697. This patent involves setting a support unit at the bottom of the seat unit within a backrest support module. This support unit acts as a base, allowing the entire backrest support module to slide on the base and adjust the distance between the seat unit and the table. The seat unit is a shell, and the backrest unit is a chair back. The lower end of the chair back has symmetrical mating parts on both sides, each with at least two spaced sliding rods. The seat shell has corresponding grooves for these sliding rods. The sliding rods are slidably connected within the grooves, allowing the chair back to slide back and forth relative to the seat shell to adjust the seat depth. The sliding connection between the seat shell and the base is as follows: a second symmetrical groove is provided inside the seat shell, and two second sliding rods are inserted into the second grooves on the base. A second limiting screw is installed at the top of each second sliding rod, and the nut portion of the second limiting screw restricts the seat shell from moving up and down. However, this design has shortcomings.

[0004] Although the nut of the second limiting screw can prevent the housing from separating from the base, it can also easily affect the smoothness of the housing sliding back and forth. When the second limiting screw is tightly fitted to the housing, the friction between the nut and the surface of the housing is large, and pushing or pulling the housing back and forth will produce a feeling of sticking.

[0005] The first groove has already been opened on the housing to form a cavity. Opening a second groove that extends forward and backward on the housing will increase the cavity area on the housing, affecting the structural strength and service life of the housing. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a seat sliding connection mechanism that does not require opening a groove in the seat shell, nor does it require using screws to limit the movement in the groove. By simply placing the sliding connection component between the seat shell and the base, the cavity area on the seat shell is reduced, ensuring the structural strength and service life of the seat shell. It also allows the seat shell to slide smoothly back and forth relative to the base through the cooperation between the sliding component and the sliding base.

[0007] The technical solution of this utility model is implemented as follows:

[0008] A seat sliding connection mechanism includes a base and a seat shell above the base. The seat shell has a sliding groove that extends forward and backward and is used to slide and engage with a mating part on the backrest. A sliding connection assembly is provided between the seat shell and the base. The sliding connection assembly includes a base and a sliding member. The sliding member is slidably connected to the base in the forward and backward direction. The sliding member is disposed on the outer bottom surface of the seat shell and is offset to the left and right from the sliding groove. The base is disposed on the top of the base.

[0009] When an external force is applied to the housing, the sliding component slides back and forth relative to the base to change the front and back position of the housing on the base.

[0010] Preferably, the sliding connection components are symmetrically arranged between the housing and the base, making the housing more stable and smooth when sliding back and forth.

[0011] Preferably, the bottom of the housing is provided with a receiving groove that matches the sliding member, and the sliding member is set in the receiving groove and does not protrude from the outer surface of the housing; making the structure of the bottom of the housing simpler and more beautiful.

[0012] Preferably, the bottom of the housing is provided with a threaded hole, and the sliding component is provided with a clearance hole. The bolt passes through the clearance hole and is screwed into the threaded hole to lock the sliding component at the bottom of the housing.

[0013] Preferably, the bottom of the housing is provided with one or more positioning pins, and the sliding component is provided with a corresponding number of positioning holes. The positioning pins are inserted into the positioning holes to align the clearance holes with the threaded holes, thereby improving the assembly efficiency between the sliding component and the housing.

[0014] Preferably, the base is provided with multiple support seats spaced back and forth, and the upper end of the support seat is provided with an upwardly protruding insertion part. The base is connected to the top of the insertion part, and the left and right width of the insertion part is smaller than the left and right width of the base. The sliding part is provided with guide grooves and sliding clearance grooves that match the base and the insertion part respectively. The base and the insertion part are respectively located in the guide grooves and sliding clearance grooves, so that the sliding part is slidably connected to the base.

[0015] Preferably, the base has a through hole and the top of the insertion part has a screw hole. The screw passes through the through hole and is screwed into the screw hole to lock the base to the top of the insertion part.

[0016] Preferably, the upper end of the support base is provided with a positioning boss corresponding to the position of the insertion part, and the bottom end of the base is provided with a positioning groove that matches the positioning protrusion. The positioning boss is inserted into the positioning groove so that the through hole and the screw hole are aligned, thereby improving the assembly efficiency between the base and the base.

[0017] Preferably, a drag-reducing structure is provided between the support base and the sliding member. The upper end of the support base has an inwardly recessed groove. The drag-reducing structure includes a rotating wheel disposed in the groove, and the outer circumferential surface of the rotating wheel contacts the sliding member. When the sliding member slides back and forth, the rotating wheel rotates to reduce the frictional resistance between the sliding member and the support base. This makes the back-and-forth sliding process of the sliding member smoother and improves the service life and durability of the sliding connection assembly.

[0018] Preferably, the sliding member includes a narrow section connected to the housing and a wide section integrally formed at the lower end of the narrow section. The base is provided with guide grooves and sliding clearance grooves that match the wide section and the narrow section respectively. The wide section and the narrow section are respectively located in the guide grooves and the sliding clearance grooves, so that the sliding member is slidably connected to the base.

[0019] The beneficial effects of this utility model, which adopts the above technical solution, are as follows:

[0020] Compared to the sliding connection method in the prior art, this utility model does not require a second sliding groove on the base shell, nor does it require a second limiting screw to cooperate with the second sliding groove. It only requires a sliding connection component between the base shell and the base to form a front-to-back sliding connection between the base shell and the base, thereby reducing the cavity area on the base shell and ensuring the smoothness of the front-to-back sliding of the base shell. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the seat sliding mechanism;

[0022] Figure 2 This is an exploded view of the seat sliding mechanism from a low angle.

[0023] Figure 3 This is an exploded view of the seat sliding mechanism from a top-down perspective;

[0024] Figure 4-5 This is a schematic diagram showing the sliding connection assembly pre-installed on the base during assembly;

[0025] Figure 6 This is an enlarged sectional view of the position of the support seat on the seat sliding mechanism along the front-to-back direction;

[0026] Figure 7 This is a cross-sectional enlarged view of the position of the support seat on the seat sliding mechanism along the left-right direction;

[0027] Figure 8 This is a schematic diagram of the structure of the slider and the sliding base in Embodiment 2;

[0028] The reference numerals in the attached drawings are as follows: 1-base, 2-base, 3-sliding component, 3a-wide section, 3b-narrow section, 4-sliding base, 11-accommodating groove, 12-threaded hole, 13-positioning post, 14-base plate, 21-support base, 22-screw hole, 23-rotating wheel, 231-rotating shaft, 24-insertion part, 25-positioning boss, 26-top cover, 261-limiting part, 27-groove, 31-guide groove, 31a-sliding clearance groove, 32-clearance hole, 33-positioning hole, 41-rib, 42-through hole, 43-positioning groove, 44-countersunk hole. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] This utility model has multiple embodiments, and the specific implementation methods are as follows:

[0032] Example 1: As Figure 1-7 As shown, this embodiment provides a seat sliding connection mechanism, including a base 2 and a seat shell 1 above the base 2. For convenient sitting, a seat plate 14 is installed at the opening at the upper end of the seat shell 1. To ensure that the backrest 5 can slide back and forth and adjust the seat depth, a sliding groove 15 extending back and forth and used to slide with the mating part 51 on the backrest 5 is provided through the seat shell 1. A sliding connection assembly is provided between the seat shell 1 and the base 2. The sliding connection assembly includes a base 4 and a sliding member 3. The sliding member 3 is slidably connected to the base 4 in the back-to-back direction. Since no screws are used to tighten the sliding member 3, the sliding member 3 can slide smoothly back and forth on the base 4. The sliding member 3 is set on the seat shell 1. The outer bottom surface of the shell 1 is offset from the sliding groove 15, and the base 4 is set at the top of the base 2. The position of the seat shell 1 between the front edge and the table can be adjusted to facilitate sitting. When the seat shell 1 is subjected to external force, the sliding member 3 slides back and forth relative to the base 4 to change the front and back position of the seat shell 1 on the base 2. A control locking mechanism is provided between the seat shell 1 and the base 2. When the seat shell 1 needs to slide back and forth, the position can be unlocked by controlling the locking mechanism. When the seat shell 1 slides back and forth into place, the position can be locked by controlling the locking mechanism. For the specific structure, please refer to the second locking module in the seat patent with announcement number CN118402697, which will not be described in detail here.

[0033] Furthermore, the sliding connection components are symmetrically arranged between the housing 1 and the base 2; the symmetrical arrangement design allows the left and right sides of the housing 1 to slide synchronously, thereby making the housing 1 more stable and smooth when sliding back and forth.

[0034] Furthermore, to ensure that the sliding connection component does not affect the appearance of the seat, the bottom of the seat shell 1 is provided with a receiving groove 11 that matches the sliding member 3. The sliding member 3 is set in the receiving groove 11 and does not protrude from the outer surface of the seat shell 1; making the structure of the bottom of the seat shell 1 more concise and beautiful, and avoiding a bulky appearance.

[0035] Furthermore, the connection between the sliding member 3 and the housing 1 is as follows: the bottom end of the housing 1 is provided with a threaded hole 12, and the sliding member 3 is provided with a clearance hole 32. The bolt passes through the clearance hole 32 and is screwed into the threaded hole 12 to lock the sliding member 3 at the bottom end of the housing 1. In order to quickly align the clearance hole 32 and the threaded hole 12, the bottom end of the housing 1 is provided with one or more positioning pins 13, and the sliding member 3 is provided with a corresponding number of positioning holes 33. The positioning pins 13 are inserted into the positioning holes 33 to align the clearance hole 32 with the threaded hole 12. This improves the assembly efficiency between the sliding member 3 and the housing 1.

[0036] Furthermore, such as Figure 2-5 As shown, the sliding connection between the sliding member 3 and the base 4 is as follows: To facilitate the installation of the base 4, the base 2 is provided with multiple support seats 21 spaced apart front and back. The upper end of the support seat 21 is provided with an upwardly protruding insertion part 24. The base 4 is connected to the top of the insertion part 24. The left and right width of the insertion part 24 is smaller than the left and right width of the base 4. The sliding member 3 is provided with guide grooves 31 and sliding clearance grooves 31a that match the base 4 and the insertion part 24 respectively. Specifically, the sliding member 3 is a sheet metal part formed by integral bending. The sliding member 3 includes a plate body. The two ends of the plate body are turned down and extended to the inner side of the plate body, thereby forming the guide grooves 31 and sliding clearance grooves 31a on the sliding member 3. The base 4 is a plate structure. The base 4 and the insertion part 24 are respectively located in the guide grooves 31 and sliding clearance grooves 31a, so that the sliding member 3 and the base 4 are slidably connected.

[0037] Furthermore, the connection between the base 4 and the insertion part 24 is as follows: the base 4 is provided with a through hole 42, and the top of the insertion part 24 is provided with a screw hole 22. The screw passes through the through hole 42 and is screwed into the screw hole 22 to lock the base 4 to the top of the insertion part 24. In order to quickly align the through hole 42 and the screw hole 22, the upper end of the support base 21 is provided with a positioning boss 25 corresponding to the position of the insertion part 24, and the bottom end of the base 4 is provided with a positioning groove 43 that matches the positioning protrusion. The positioning boss 25 is inserted into the positioning groove 43 to align the through hole 42 with the screw hole 22, thereby improving the assembly efficiency between the base 4 and the base 2.

[0038] Furthermore, after the screw locks the base 4 onto the insertion part 24, since the base 4 is located inside the guide groove 31, in order to ensure the smooth sliding of the sliding member 3 and to prevent the screw nut from protruding outside the base 4 and contacting the inner wall of the guide groove 31 on the sliding member 3, the top of the base 4 is provided with a countersunk hole 44 concentric with the through hole. After the screw is screwed into the screw hole 22, the screw nut is located inside the countersunk hole 44 and is not exposed, so as to ensure that the sliding member 3 can slide smoothly back and forth.

[0039] Furthermore, in order to make the sliding member 3 slide more smoothly back and forth, the base 4 is provided with multiple ribs 41 that extend back and forth and contact the inner wall of the guide groove 31 on the sliding member 3. The ribs 41 can reduce the contact area between the base 4 and the inner wall of the guide groove 31, ensuring that the sliding member 3 slides back and forth stably and smoothly.

[0040] Furthermore, such as Figure 3 As shown, to ensure the stable support of the base 2 on the housing 1, the upper end of the support 21 contacts the lower end of the slider 3. When the slider 3 slides back and forth, the support 21 and the slider 3 are prone to friction against each other. To reduce friction and improve the smoothness of the slider 3's back and forth sliding, a friction-reducing structure is provided between the support 21 and the slider 3. The upper end of the support 21 has an inwardly recessed groove 27. The friction-reducing structure includes a rotating wheel 23 set in the groove 27. The outer circumferential surface of the rotating wheel 23 contacts the slider 3. When the slider 3 slides back and forth, the rotating wheel 23 rotates to reduce the frictional resistance between the slider 3 and the support 21. This design is equivalent to converting the sliding friction between the support 21 and the slider 3 into rolling friction, making the back and forth sliding process of the slider 3 smoother and improving the service life and durability of the sliding connection assembly.

[0041] Furthermore, such as Figure 7 As shown, the installation method of the rotating wheel 23 is as follows: the support base 21 includes a body, the body is provided with the groove 27, the two ends of the rotating wheel 23 are connected to the rotating shaft 231, the inner wall of the groove 27 is provided with a mounting groove that matches the rotating 231 and is open at the top, the upper end of the body is connected to the top cover 26 that contacts the bottom end of the sliding member 3, the top cover 26 extends downward to the limiting part 261, the limiting part 261 is inserted from the upper open end of the mounting groove to restrict the rotating shaft 231 from coming out of the body of the support base 21.

[0042] Example 2: Figure 8As shown, the difference between this embodiment and the above embodiment lies in the different structures of the sliding member 3 and the base 4. The sliding member 3 includes a narrow section 3b connected to the base shell and a wide section 3a integrally formed at the lower end of the narrow section 3b, making the cross-sectional shape of the sliding member 3 T-shaped. The base 4 is provided with guide grooves 31 and sliding clearance grooves 31a that match the wide section 3a and the narrow section 3b respectively. Specifically, in this embodiment, the base 4 is an integrally bent sheet metal part. The base 4 includes a plate-shaped body. The left and right ends of the plate-shaped body are turned upward and extended into the inner side of the plate-shaped body to form the guide grooves 31 and sliding clearance grooves 31a. The wide section 3a and the narrow section 3b are respectively located in the guide grooves 31 and the sliding clearance grooves 31a, so that the sliding member 3 and the base 4 are slidably connected; to achieve the same sliding connection effect as in the above embodiment.

[0043] 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 sliding connection mechanism, characterized in that, Includes a base (2) and a seat shell (1) above the base (2). The seat shell (1) is provided with a sliding groove (15) that extends from front to back and is used to slide with a mating part (51) on the backrest (5). A sliding connection assembly is provided between the seat shell (1) and the base (2). The sliding connection assembly includes a base (4) and a sliding member (3). The sliding member (3) is slidably connected to the base (4) in the front-back direction. The sliding member (3) is set on the outer bottom surface of the seat shell (1) and is offset from the sliding groove (15) to the left and right. The base (4) is set on the top of the base (2). When an external force is applied to the housing (1), the sliding member (3) slides back and forth relative to the base (4) to change the front and back position of the housing (1) on the base (2).

2. The seat sliding connection mechanism according to claim 1, characterized in that: The sliding connection components are symmetrically arranged between the housing (1) and the base (2).

3. The seat sliding connection mechanism according to claim 1, characterized in that: The bottom of the housing (1) is provided with a receiving groove (11) that matches the sliding member (3). The sliding member (3) is located in the receiving groove (11) and does not protrude from the outer surface of the housing (1).

4. The seat sliding connection mechanism according to claim 1, characterized in that: The bottom end of the housing (1) is provided with a threaded hole (12), and the sliding part (3) is provided with a clearance hole (32). The bolt passes through the clearance hole (32) and screws into the threaded hole (12) to lock the sliding part (3) at the bottom end of the housing (1).

5. A seat sliding connection mechanism according to claim 4, characterized in that: The bottom of the housing (1) is provided with one or more positioning pins (13), and the sliding part (3) is provided with a corresponding number of positioning holes (33). The positioning pins (13) are inserted into the positioning holes (33) so that the clearance hole (32) is aligned with the threaded hole (12).

6. The seat sliding connection mechanism according to claim 1, characterized in that: The base (2) is provided with multiple support seats (21) spaced back and forth. The upper end of the support seat (21) is provided with an upward protruding insertion part (24). The base (4) is connected to the top of the insertion part (24). The left and right width of the insertion part (24) is smaller than the left and right width of the base (4). The sliding member (3) is provided with guide grooves (31) and sliding clearance grooves (31a) that match the base (4) and the insertion part (24) respectively. The base (4) and the insertion part (24) are respectively located in the guide grooves (31) and the sliding clearance grooves (31a), so that the sliding member (3) and the base (4) are slidably connected.

7. A seat sliding connection mechanism according to claim 6, characterized in that: The base (4) has a through hole (42), and the top of the insert part (24) has a screw hole (22). The screw passes through the through hole (42) and is screwed into the screw hole (22) to lock the base (4) to the top of the insert part (24).

8. A seat sliding connection mechanism according to claim 7, characterized in that: The upper end of the support base (21) is provided with a positioning boss (25) corresponding to the position of the insertion part (24), and the bottom end of the base (4) is provided with a positioning groove (43) matching the positioning protrusion. The positioning boss (25) is inserted into the positioning groove (43) so that the through hole (42) is aligned with the screw hole (22).

9. A seat sliding connection mechanism according to claim 6, characterized in that: A drag-reducing structure is provided between the support base (21) and the sliding member (3). The upper end of the support base (21) has an inward groove (27). The drag-reducing structure includes a rotating wheel (23) provided in the groove (27). The outer circumferential surface of the rotating wheel (23) contacts the sliding member (3). When the sliding member (3) slides back and forth, the rotating wheel (23) rotates to reduce the frictional resistance between the sliding member (3) and the support base (21).

10. A seat sliding connection mechanism according to claim 1, characterized in that: The sliding member (3) includes a narrow section (3b) connected to the housing and a wide section (3a) integrally formed at the lower end of the narrow section (3b). The base (4) is provided with a guide groove (31) and a sliding clearance groove (31a) that match the wide section (3a) and the narrow section (3b) respectively. The wide section (3a) and the narrow section (3b) are respectively located in the guide groove (31) and the sliding clearance groove (31a), so that the sliding member (3) is slidably connected to the base (4).

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