Seat armrest

Abstract

A seat armrest, comprising: a supporting rod (1) and a support plate (2). A mounting base (3) is mounted at the top of the supporting rod (1), and an arc-shaped slide recess (31) is formed in the side of the mounting base (3) distant from the supporting rod (1); and an adjustment base (4) is slidably mounted at the position of the mounting base (3) corresponding to the arc-shaped slide recess (31), the adjustment base (4) slides in the radian direction of the arc-shaped slide recess (31), and the adjustment base (4) comprises a sliding portion (41) and a connecting portion (42) which are connected to each other. The support plate (2) is mounted on the connecting portion (42), an arc surface is formed on the side of the sliding portion (41) close to the mounting base (3) and is adapted to the arc surface of the arc-shaped slide recess (31), and the sliding portion (41) is movable along the arc-shaped slide recess (31); or an arc surface is formed on the side of the mounting base (3) distant from the supporting rod (1), and the adjustment base (4) is slidably mounted at a position on the mounting base (3) corresponding to the arc surface. Compared with the prior art, the seat armrest allows a user to adjust the armrest to the required angle and position under different sitting postures or different use environments and the like, improving the experience of the user.

Description

A seat armrest Technical Field

[0001] The present invention relates to the field of chair armrests, in particular to a chair armrest. Background Art

[0002] At present, in people's daily life, seats are often used, and seats generally have armrests. The armrests are used to place the user's arms, making it more comfortable for the user to work or rest on the seat.

[0003] The existing chair armrest includes a support rod and a support plate, wherein an adjustment block is rotatably mounted on the top of the support rod; the support plate is horizontally slidably mounted on the adjustment block; thereby, the user can adjust the position of the support plate according to his or her habitual sitting posture.

[0004] Regarding the above-mentioned related technologies, the adjustment angle range of the support plate is limited and cannot meet more placement requirements of the user, resulting in insufficient user experience.

[0005] Summary of the Invention

[0006] In response to the problems existing in the above-mentioned prior art, the present application provides a chair armrest so that the support plate can be adjusted to the required angle and position when the user is in different sitting postures or different usage environments, thereby improving the user's experience.

[0007] In order to solve the above technical problems, the technical solution of the present invention is:

[0008] A chair armrest comprises: a support rod and a support plate, wherein a mounting seat is installed on the top of the support rod;

[0009] The mounting seat is provided with an arc-shaped slot on one side away from the support rod, and an adjustment seat is slidably installed on the mounting seat corresponding to the arc-shaped slot, and the adjustment seat slides along the curvature direction of the arc-shaped slot, and the adjustment seat includes a sliding portion and a connecting portion connected to each other, and the support plate is installed on the connecting portion, and the sliding portion has an arc surface on the side close to the mounting seat and is adapted to the arc surface of the arc-shaped slot, and the sliding portion can move along the arc-shaped slot; or

[0010] The mounting seat has a curved surface on the side away from the support rod, and an adjustment seat is slidably installed on the mounting seat corresponding to the curved surface. The support plate is installed on the adjustment seat, and the adjustment seat has an arc-shaped groove on the side facing the mounting seat. The arc surface of the arc-shaped groove is adapted to the arc surface of the mounting seat away from the support rod, and the mounting seat and the adjustment seat slide relative to each other along the curvature direction of the arc-shaped groove.

[0011] Preferably, the connecting portion supports the support plate, and the support plate is rotatably mounted on the connecting portion. The sliding portion is in an overall concave arc shape relative to the support plate. The end of the sliding portion away from the connecting portion is arranged upward relative to the bottom of the sliding portion. There is a gap between the end of the sliding portion away from the connecting portion and the bottom of the sliding portion and the support plate.

[0012] Preferably, a first sliding groove is provided in the mounting seat, a connecting block is installed on the side of the adjustment seat close to the mounting seat, an adjusting block is provided on one end of the connecting block close to the mounting seat, the connecting block extends into the mounting seat, and the adjusting block slides in cooperation with the first sliding groove.

[0013] 4. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut.

[0014] The cam is secured to a position adjacent to the first support member and secured to the first support member so that the cam can be moved relative to the first support member when the cam is in the first position. and a lever, having one end in pinned connection to the bottom of the block, said pin being located adjacent to the first support bracket of the second support bracket, and said first support bracket being located adjacent to the bottom support bracket of the second support bracket.

[0015] Preferably, a first sliding groove is provided in the adjustment seat, a connecting block is installed on the side of the mounting seat close to the adjustment seat, an adjusting block is provided on the end of the connecting block away from the mounting seat, the connecting block extends into the adjustment seat, and the adjusting block slides in cooperation with the first sliding groove.

[0016] Preferably, the cross-section of the adjustment block is larger than the cross-section of the connecting block, and a connecting groove connected to the first sliding groove is provided on the side of the adjustment seat close to the mounting seat. The connecting block extends into the adjustment seat through the connecting groove, and the connecting block is detachably connected to the mounting seat. The side of the adjustment seat close to the support plate is open, and the opening is connected to the first sliding groove. A cover plate 45 is connected to the corresponding opening of the adjustment seat.

[0017] Preferably, the adjustment block is equipped with a first limit assembly for limiting the sliding position of the adjustment seat, and the first limit assembly includes: a first swing rod and a first clamping block; a swing groove is provided in the adjustment block, and the first swing rod is swing-mounted in the adjustment block through the swing groove; one side of the adjustment block is provided with a first extension opening connected to the swing groove, the adjustment seat is located on the groove wall of the first sliding groove and a plurality of first clamping grooves are provided at the position corresponding to the first extension opening, and the plurality of first clamping grooves are arranged in the extension direction of the first sliding groove, one end of the first clamping block is connected to the first swing rod, and the other end passes through the adjustment block through the first extension opening and is clamped in the first clamping groove; the first limit assembly also includes a first driving member for driving the first swing rod to swing.

[0018] As preferably, the first driving member includes a first elastic member, the first elastic member is respectively connected to the first swing rod and the side of the swing slot away from the first extension port; one side of each first locking slot in the arrangement direction is a first inclined surface; the armrest also includes: a reset member at the first locking slot for driving the first locking block to return to an initial position, the swing slot is provided with a first moving slot on both sides in the vertical direction and corresponding to the rotating shaft of the first swing rod, the first moving slot extends in the length direction of the first sliding slot, and the two ends of the rotating shaft of the first swing rod are respectively slidably mounted on the adjusting block through the first moving slot; the first locking block is installed with a first sliding rod parallel to the rotating shaft of the first swing rod, and the swing slot is provided with a side wall of the first moving slot and corresponding to The first and second movable grooves are provided at the positions of the first sliding rods, and the two ends of the first sliding rod are respectively slidably mounted on the adjusting block through the second moving grooves; the adjusting block is provided with a first avoidance groove at the groove wall position corresponding to the second moving groove, and when the first sliding rod is stuck in the first avoidance groove, the first locking block is clamped in the first locking groove; the reset member is used to drive the first sliding rod to slide in the second moving groove, and the first sliding rod extends out of the adjusting block at one end away from the mounting seat, and the reset member includes a driving seat, which is installed in the first sliding groove at the position where the first sliding rod extends out of the adjusting block, and the driving seat is provided with a groove for the first sliding rod to slide on one side facing the first sliding rod, and the groove extends in the sliding direction of the adjusting block.

[0019] Preferably, the adjustment block includes an upper half and a lower half, the lower half is connected to the connecting block, the upper half is covered on the side of the lower half away from the connecting block, and the upper half and the lower half are detachably connected; the swing groove is opened between the upper half and the lower half.

[0020] Preferably, a sliding groove is provided on the side of the mounting seat close to the adjustment seat; the first limiting assembly includes: a locking block and a driving member, and the locking block is slidably installed on the mounting seat through the sliding groove; the side of the adjustment seat close to the mounting seat is provided with locking grooves spaced apart along the arc direction of the arc-shaped sliding groove, and the locking block extends out of the sliding groove and is clamped to the adjustment seat through the locking groove; the driving member is used to drive the locking block to slide.

[0021] Preferably, the side wall of the mounting seat is provided with a mounting groove connected to the sliding groove, and the driving member includes an unlocking block and a pushing block, the unlocking block is slidably installed on the mounting seat through the mounting groove, and the unlocking block extends out of the mounting seat; the locking block is provided with an inclined groove, and the inclined groove extends upward from one end of the locking block close to the bottom of the mounting groove, one end of the pushing block is connected to the unlocking block, and the other end is passed through the inclined groove and is arranged in the locking block.

[0022] Preferably, second inclined surfaces are formed on both sides of one end of the locking block extending out of the sliding slot, and guide surfaces adapted to the second inclined surfaces are formed on opposite side walls of the locking slot.

[0023] Preferably, a plurality of slots are provided on the adjustment seat, and the mounting seat is installed with a first limiting component for limiting the sliding position of the adjustment seat, and the first limiting component is provided with a block or a ball, and when the block or the ball is inserted into different slots, the support plate has different angles relative to the support rod.

[0024] Preferably, when the adjustment seat has multiple gears relative to the sliding direction of the slide groove, the multiple gears include an initial gear and a reset gear, and the support plate adjustment angle of each gear is different, the mounting seat is installed with a first limiting component for limiting the sliding position of the adjustment seat, and the seat armrest is also provided with a reset component that cooperates with the first limiting component. In the initial gear, the support plate adjustment angle is the smallest. In the process of sliding from the initial gear to the reset gear, when reaching a gear other than the reset gear, the first limiting component cooperates with the adjustment seat to limit the adjustment seat so that the adjustment seat cannot move toward the initial gear; when the adjustment seat slides to the reset gear, the reset component releases the limit of the adjustment seat by the first limiting component, and the support plate can move toward the initial gear direction.

[0025] Preferably, the connecting portion supports the support plate, and the support plate is rotatably mounted on the connecting portion. The sliding portion is in an overall concave arc shape relative to the support plate. The end of the sliding portion away from the connecting portion is arranged upward relative to the bottom of the sliding portion. There is a gap between the end of the sliding portion away from the connecting portion and the bottom of the sliding portion and the support plate. An intermediate gear position is also included between the initial gear position and the reset gear position. In the initial gear position, the end of the sliding portion away from the connecting portion extends out of the curvature of the arc-shaped slide groove. In the reset gear position, the end of the sliding portion away from the connecting portion extends within the curvature of the arc-shaped slide groove.

[0026] Preferably, the support rod includes an inner tube and an outer tube, the outer tube is sleeved on the inner tube, the outer tube and the inner tube are relatively slidably connected, the mounting seat is installed on the top of the outer tube, the outer tube limits the relative position of the inner tube with the third limiting assembly, a locking plate is slidably installed in the inner tube, and the locking plate is connected to the outer tube; the locking plate is installed with a mounting box, one side of the outside of the mounting box is provided with a protruding opening, and a third limiting assembly is installed in the mounting box, and a side wall of the inner tube is provided with a plurality of second clamping grooves spaced apart along the length direction, and the third limiting assembly passes through the locking plate through the protruding opening and is clamped in the second clamping groove.

[0027] Preferably, the third limiting assembly includes a second swing rod and a second locking block, and the second swing rod is swing-mounted in the mounting box; one end of the second locking block is connected to the end of the second swing rod away from the rotating shaft, and the other end passes through the locking plate through the protruding port and is locked in the second locking groove; the third limiting assembly also includes: a second driving member for driving the second swing rod to swing.

[0028] Preferably, the second driving member includes a third elastic member, the third elastic member being respectively connected to the second swing lever and a side of the installation box away from the extension opening, and the second locking block having a third inclined surface facing upward; the armrest further includes: a second reset member at the second locking groove for driving the second locking block to return to an initial position; the installation box is provided with a third movable groove on a side wall in the thickness direction of the locking plate and corresponding to the rotating shaft of the second swing lever, the third movable groove extending in the sliding direction of the locking plate, and the rotating shaft end of the second swing lever being slidably mounted on the installation box through the third movable groove;

[0029] The second restoring member includes: a second sliding rod parallel to the rotating shaft of the second swinging rod, the second sliding rod being mounted on the second locking block, the side wall of the mounting box having the third moving groove being provided with a fourth moving groove at a position corresponding to the second sliding rod, the end of the second sliding rod being slidably mounted on the mounting box through the fourth moving groove; the mounting box is provided with a second avoiding groove at a top position corresponding to the fourth moving groove, and when the second sliding rod is engaged with the second avoiding groove, the second locking block is engaged with the second locking groove;

[0030] The side wall of the inner cylinder is provided with a driving groove extending in the sliding direction of the locking plate, and one end of the second sliding rod extends out of the locking plate and is slidably mounted on the inner cylinder through the driving groove; when the locking plate slides upward until the second locking block leaves the second locking groove at the top, the end wall of the driving groove pushes the second sliding rod to engage in the bottom of the fourth movable groove.

[0031] Preferably, the support rod includes an inner tube and an outer tube, the outer tube is sleeved on the inner tube, the outer tube and the inner tube are connected in a relatively sliding manner, and the mounting seat is rotatably mounted on the top of the outer tube.

[0032] Preferably, the outer cylinder is provided with a second limit assembly for limiting the rotation position of the mounting seat, the second limit assembly comprises: a rotating ring and a limit block, the rotating ring is fixedly mounted on a side of the mounting seat close to the support rod, and the rotating ring is rotatably mounted on the outer cylinder; the limit block is an elastic block, the limit block is mounted on one end of the outer cylinder close to the rotating ring, the outer side wall of the rotating ring is provided with a plurality of first locking grooves at intervals along the circumferential direction, and the limit block is clamped to the rotating ring through the first locking groove.

[0033] Preferably, the support plate is slidably and rotatably mounted on the adjustment seat, and the adjustment seat is equipped with a fourth limiting component for limiting the sliding position of the support plate and a fifth limiting component for limiting the rotational position of the support plate.

[0034] Preferably, the fourth limiting assembly includes: a sliding seat and a locking member, a second sliding groove is provided in the support plate; the sliding seat is rotatably connected to the adjustment seat, and the sliding seat is slidably mounted on the support plate through the second sliding groove; the locking member is used to limit the sliding position of the sliding seat;

[0035] The locking member includes: a locking block and a fourth elastic member, the side wall of the sliding seat is provided with a mounting groove, the locking block is slidably mounted on the sliding seat through the mounting groove; the fourth elastic member is installed on the locking block and the groove bottom of the mounting groove; the supporting plate is provided with a plurality of locking grooves arranged at intervals in the sliding direction of the sliding seat at a position corresponding to the groove wall of the second sliding groove and corresponding to the position of the locking block, the locking block extends out of the mounting groove at one end away from the fourth elastic member and is engaged with the locking groove, and the locking block is provided with an arc surface on a side close to the locking groove;

[0036] The fifth limiting assembly includes: a locking disk and a blocking portion, the locking disk is sleeved on the rotating shaft of the adjusting seat and rotatably mounted on the sliding seat, and the locking disk is provided with a plurality of second locking grooves spaced apart along the circumferential direction; the blocking portion is an elastic block, the blocking portion is mounted on the sliding seat, and the blocking portion is clamped to the locking disk through the second locking groove.

[0037] Preferably, the seat armrest is also provided with a connecting plate that cooperates with the connecting groove, the connecting plate is located on the outside of the connecting groove, and a connecting through-hole connected to the connecting groove is provided on the connecting plate. The connecting block passes through the connecting through-hole and the connecting groove, and the connecting plate can slide relative to the connecting groove under the drive of the connecting block to close the end of the connecting groove.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] The support plate can be adjusted by cooperating with the adjustment seat and the mounting seat to meet the user's needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] FIG1 is a schematic diagram of the overall structure of Example 1 of the present application.

[0041] FIG2 is an exploded view of the overall structure of Example 1 of the present application.

[0042] Figure 3 is a cross-sectional view of the installation structure between the mounting seat and the adjustment seat in Example 1 of the present application.

[0043] FIG4 is a schematic diagram of the internal structure of the adjustment seat of Example 1 of the present application.

[0044] FIG5 is a partial enlarged view of A in FIG4 .

[0045] FIG6 is a schematic diagram of the installation structure of the first restoring member of Example 1 of the present application.

[0046] FIG7 is a schematic diagram of the installation position of the limit assembly of Example 2 of the present application.

[0047] FIG8 is a schematic diagram of the structure of the position limiting component of Example 2 of the present application.

[0048] FIG9 is a cross-sectional view of the overall structure of Example 1 of the present application.

[0049] FIG10 is an exploded view of the overall structure of Example 1 of the present application.

[0050] FIG11 is a partial enlarged view of B in FIG9 .

[0051] Figure 12 is a schematic diagram of the third limiting component in Example 1 of the present application when in use.

[0052] Figure 13 is a schematic diagram of the installation of the third limiting component of Example 1 of the present application.

[0053] FIG14 is a schematic diagram of the support rod resetting structure of Example 1 of the present application.

[0054] Figure 15 is a structural schematic diagram of the installation box of Example 1 of the present application installed on the locking plate.

[0055] Figure 16 is a schematic diagram of the installation of the second limiting component of Example 1 of the present application.

[0056] Figure 17 is a schematic diagram of the installation structure of the fourth limiting assembly and the fifth limiting assembly of Example 1 of the present application.

[0057] Figure 18 is a schematic diagram of the bottom-up structure of the adjustment seat and support plate of Example 1 of the present application.

[0058] Figure 19 is a structural diagram of Example 3 of the present application.

[0059] Figure 20 is a structural diagram of Example 4 of the present application.

[0060] Explanation of reference numerals: 1. Support rod; 2. Support plate; 3. Mounting seat; 11. Inner cylinder; 12. Outer cylinder; 14. Locking plate; 111. Second locking groove; 112. Driving groove; 141. Side groove; 142. Mounting box; 21. Second sliding groove; 22. Slot portion; 31. Arc-shaped sliding groove; 32. Connecting block; 33. Adjusting block; 331. Upper half block; 332. Lower half block; 333. Swinging groove; 334. First extension port; 335. First moving groove; 336. Second moving groove; 337. First avoidance groove; 34. Sliding Slot; 35, mounting slot; 4, adjustment seat; 41, sliding portion; 42, connecting portion; 43, first sliding slot; 44, connecting slot; 45, cover plate; 46, first locking slot; 461, first inclined surface; 47, locking slot; 471, guide surface; 48, connecting plate; 481, connecting through hole; 5, first limiting assembly; 51, first swinging rod; 52, first locking block; 521, first sliding rod; 53, First driving member; 531, first elastic member; 54, first restoring member; 541, driving seat; 542, groove; 55, locking block; 551, second inclined surface; 552, inclined groove; 56, driving member; 561, unlocking block; 562, pushing block; 563, second elastic member; 6, second limiting assembly; 61, rotating ring; 611, first locking groove; 62, limiting block; 7, third limiting assembly; 71, second swinging rod; 72, second locking block; 721. Second sliding rod; 722. Third inclined surface; 73. Second driving member; 731. Third elastic member; 74. Second reset member; 75. Third movable groove; 76. Fourth movable groove; 77. Second avoidance groove; 8. Fourth limiting assembly; 81. Sliding seat; 82. Locking member; 821. Locking block; 8211. Arc surface; 822. Fourth elastic member; 9. Fifth limiting assembly; 91. Locking disk; 911. Second locking groove; 92. Block portion. DETAILED DESCRIPTION

[0061] The specific implementation methods of the present invention are further described below in conjunction with Figures 1-20 to make the technical solutions of the present invention easier to understand and grasp.

[0062] In this embodiment, it should be understood that the terms "middle", "upper", "lower", "top", "right", "end", "front", "back", "middle", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0063] In addition, in this specific embodiment, if the connection or fixing method between components is not specifically described, the connection or fixing method can be through bolt fixing or pin fixing, or pin shaft connection, etc. commonly used in the prior art, and therefore, it is not described in detail in this embodiment.

[0064] Example 1

[0065] 1 and 2 , the armrest with an arc-shaped sliding mechanism includes a support rod 1 and a support plate 2. One end of the support rod 1 is used for detachable installation on the seat body, and the other end is set upward. A mounting seat 3 is fixedly installed on the top of the support rod 1. The support rod 1 and the mounting seat 3 are integrated or the mounting seat 3 and the support rod 1 are separated and the mounting seat 3 is fixed on the support rod 1 or the mounting seat 3 is rotatably connected to the support rod 1 around its own axis. Specifically, with the support rod 1 as a reference, the mounting seat 3 rotates relative to the support rod 1 around its own axis.

[0066] An arc-shaped slot 31 is provided on the side of the mounting seat 3 away from the support rod 1. The arc-shaped slot 31 is "︶"-shaped and is concave in the direction of the support rod 1. An adjustment seat 4 is installed at the mounting seat 3 corresponding to the arc-shaped slot 31, which is specifically a sliding installation. The adjustment seat 4 slides along the arc direction of the arc-shaped slot 31. The adjustment seat 4 includes a sliding portion 41 and a connecting portion 42 that are connected to each other. The support plate 2 is installed on the connecting portion 42. The sliding portion 41 is arc-shaped and close to the mounting seat. 3 has an arc surface on one side that matches the arc surface of the arc-shaped slide groove 31, and the sliding portion 41 can slide along the arc-shaped slide groove 31, that is, the sliding portion 41 is slidingly installed on the mounting seat 3 along the arc direction of the arc-shaped slide groove 31; the connecting portion 42 supports the support plate 2, and the support plate 2 is rotatably installed on the connecting portion 42, and the sliding portion 41 is an overall concave arc relative to the support plate 2, and the end of the sliding portion 41 away from the connecting portion 42 is arranged upward relative to the bottom of the sliding portion 41. By setting the sliding part 41 to be arc-shaped, the fit between the sliding part 41 and the arc-shaped slot 31 is tighter and the sliding is smoother; the adjustment block 33 is installed with a first limit component 5 for limiting the sliding position of the adjustment seat 4; one end of the connecting part 42 is integrally formed at one end of the sliding part 41, and there is a gap between one end of the support plate and the connecting part 42, and the other end and the end of the sliding part 41 away from the connecting part 42, that is, there is a gap between the end of the sliding part 41 away from the connecting part 42 and the bottom of the sliding part 41 and the support plate 2; so that when the user moves the support plate, the sliding part 41 can slide along the arc-shaped slot 31, so that the support plate forms a tilted state, so as to achieve adjustment to the required angle and position according to the user's sitting posture and usage environment, so as to achieve the best usage experience.

[0067] The support plate 2 includes a support plate body and a sliding plate. The sliding plate is slidably connected to the support plate body and can slide along the length direction of the support plate body. The support plate 2 is rotatably mounted on the connecting portion 42 through the sliding plate.

[0068] Referring to Figures 2, 3 and 18, a first sliding groove 43 is provided in the adjusting seat 4, and the first sliding groove 43 extends in a direction parallel to the arc-shaped sliding groove 31; the mounting seat 3 is hollow, and a connecting block 32 is inserted into the side of the mounting seat 3 close to the adjusting seat 4, and the connecting block 32 is detachably connected to the mounting seat 3, and an adjusting block 33 is integrally formed at one end of the connecting block 32 away from the mounting seat 3. The cross-section of the adjusting block 33 is larger than the cross-section of the connecting block 32 (specifically, the cross-sectional area of ​​the adjusting block 33 is larger than the cross-sectional area of ​​the connecting block 32). The adjusting block 33 and the connecting block 32 are detachably connected to the mounting seat 3 by bolts. The bolts are simultaneously penetrated through the adjusting block 33 and the connecting block 32 on the side of the adjusting block 33 away from the connecting block 32, and then threadedly installed on the mounting seat 3, thereby facilitating the disassembly and assembly of the connecting block 32 and the adjusting block 33.

[0069] The adjusting seat 4 is provided with a connecting groove connected to the first sliding groove 43 on the side close to the mounting seat 3, that is, the sliding portion 41 is provided with a connecting groove 44 on the side close to the mounting seat 3, the connecting groove 44 is parallel to the arc-shaped sliding groove 31 and is connected to the first sliding groove 43, the connecting block 32 extends into the adjusting seat 4 through the connecting groove 44, and the adjusting block 33 is slidably matched with the first sliding groove 43. Specifically, the adjusting block 33 is slidably mounted on the adjusting seat 4 through the first sliding groove 43; thereby, the adjusting seat 4 can stably slide on the mounting seat 3.

[0070] Referring to Figure 18 , the armrest is further provided with a connecting plate 48 that mates with the connecting slot 44. The connecting plate 48 is located outside the connecting slot 44, i.e., on the side closest to the connecting seat 3. A connecting through-hole 481 is defined in the connecting plate 48, which communicates with the connecting slot 44. The connecting block 32 passes through the connecting through-hole 481 and the connecting slot 44. Driven by the connecting block 32, the connecting plate 48 can slide relative to the connecting slot 44 to seal the end of the connecting slot 44, preventing a user's hand from being pinched by the connecting slot 44. This also prevents the internal structure of the adjustable seat 4 from being visible through the connecting slot 44, which could affect the aesthetics of the armrest.

[0071] The adjustment seat 4 has an opening on one side close to the support plate, and the opening is connected to the first sliding groove 43. A cover plate 45 is connected to the corresponding opening of the adjustment seat 4, and the cover plate 45 is buckled on the adjustment seat 4 along the circumferential direction; thus, when the cover plate 45 can be directly removed, the adjustment block 33 and the connecting block 32 can be disassembled and assembled.

[0072] 2 and 3 , the adjustment block 33 includes an upper block 331 and a lower block 332. The lower block 332 is connected to the connecting block 32 and is integrally formed. The upper block 331 covers the side of the lower block 332 away from the connecting block 32. Bolts are passed through the upper block 331 and the lower block 332 at the same time to complete the detachable connection between the upper block 331 and the lower block 332.

[0073] 3 , 4 and 5 , the first limiting assembly 5 includes a first swinging rod 51, a first positioning block 52 and a first driving member 53 for driving the first swinging rod 51 to swing; a swinging groove 333 is provided in the adjusting block 33, specifically, the adjusting block 33 is provided with a swinging groove 333 at a position between the upper block 331 and the lower block 332, that is, the swinging groove 333 is provided between the upper block 331 and the lower block 332; the first swinging rod 51 is horizontally swingably mounted in the adjusting block 33 through the swinging groove 333; one side of the adjusting block 33 is provided with an extension opening 334 connected to the swinging groove 333, and the adjusting seat 4 is provided with several grooves on the groove wall of the first sliding groove 43 and corresponding to the position of the extension opening 334. There are a plurality of first latching slots 46, and several of the first latching slots 46 are arranged in the extension direction of the first sliding slot 43. In this embodiment, the number of the first latching slots 46 is three; the three first latching slots 46 are arranged in the extension direction of the first sliding slot 43, one end of the first latching block 52 is connected to the first swing rod 51, and the other end passes through the adjustment block 33 through the extension port 334 and is engaged with the first latching slot 46, that is, one end of the first latching block 52 is integrally formed with the end of the first swing rod 51 away from the rotating shaft, and the other end passes through the adjustment block 33 through the extension port 334 and is engaged with a corresponding first latching slot 46; the first driving member 53 is used to drive the first swing rod 51 to swing, thereby achieving locking and unlocking of the adjustment seat 4.

[0074] The first driving member 53 includes a first elastic member 531. In the present embodiment, the first elastic member 531 is a spring. The two ends of the first elastic member 531 are respectively fixedly mounted and connected to the side of the first swinging rod 51 away from the protruding port 334 and the side of the swinging slot 333 away from the protruding port 334; the same side of each first locking slot 46 in the arrangement direction is a first inclined surface 461, and the first inclined surface 461 is opened on the side of the first locking slot 46 in the direction of the arrow in Figure 4; therefore, when the support plate is moved, the first locking block 52 can be retracted into the swinging slot 333 along with the first swinging rod 51 through the guiding effect of the first inclined surface 461, thereby completing the unlocking.

[0075] 5 and 6, the swinging groove 333 is provided with a first movable groove 335 on both sides in the vertical direction and at the position of the rotation axis of the first swinging rod 51. The first movable groove 335 extends in the length direction of the first sliding groove 43, and the first movable groove 335 at the upper half block 331 is connected to the outside of the side away from the lower half block 332; the two ends of the rotation axis of the first swinging rod 51 are respectively slidably mounted on the adjusting block 33 through the first movable grooves 335 on the upper half block 331 and the lower half block 332, and the rotation axis of the first swinging rod 51 is cylindrical; the first locking block 52 is installed with a first sliding rod 521 parallel to the rotation axis of the first swinging rod 51, and the first sliding rod 521 is cylindrical, and the swinging groove 333 is opened on the side wall of the first movable groove 335 and at the position corresponding to the first sliding rod 521 A second movable groove 336 is provided, and the second movable groove 336 at the upper half block 331 is connected to the outside of the side away from the lower half block 332; the two ends of the first sliding rod 521 are slidingly installed on the adjustment block 33 through the second movable grooves 336 located on the upper half block 331 and the lower half block 332 respectively; the adjustment block 33 is provided with a first avoidance groove 337 at the end side wall position corresponding to the second movable groove 336, and the first avoidance groove 337 extends in a direction perpendicular to the second movable groove 336 (the second movable groove 336 and the first avoidance groove 337 are connected in an L-shaped arrangement). When the first sliding rod 521 is inserted into the first avoidance groove 337, the first locking block 52 is locked in the first locking groove 46, and the side surface of the first locking block 52 opposite to the first inclined surface 461 is set to adapt to the first inclined surface 461.

[0076] The adjustment seat 4 has multiple positions relative to the sliding direction of the slide slot, including an initial position (which can be the first first engaging slot 46) and a reset position (which can be the slot wall of the first sliding slot 43 away from the third first engaging slot 46). The support plate adjustment angle at each position is different. The mounting seat 3 is equipped with a first limiting assembly 5 for limiting the sliding position of the adjustment seat 4. The armrest is also provided with a reset member 54 that cooperates with the first limiting assembly 5. In the initial position, the support plate adjustment angle is the smallest. During the sliding process from the initial position to the reset position, when the adjustment seat 4 reaches a position other than the reset position, the first limiting assembly 5 cooperates with the adjustment seat 4 to limit the adjustment seat 4, preventing the adjustment seat 4 from moving toward the initial position. When the adjustment seat 4 slides to the reset position, the reset member 54 releases the limiting assembly from limiting the adjustment seat 4, allowing the support plate 2 to move toward the initial position. There is also an intermediate position between the initial and reset positions (which can be the second first engaging slot 46 and the third first engaging slot 46).

[0077] 1 and 2 , in the initial gear position, one end of the sliding portion 41 away from the connecting portion 42 extends outside the curvature of the arcuate slot 31 , and in the reset gear position, one end of the sliding portion 41 away from the connecting portion 42 extends within the curvature of the arcuate slot 31 .

[0078] The connecting portion 42 supports the support plate 2, and the support plate 2 is rotatably mounted on the connecting portion 42. The sliding portion 41 is in an overall concave arc shape relative to the support plate 2. The end of the sliding portion 41 away from the connecting portion 42 is arranged upward relative to the bottom of the sliding portion 41. There is a gap between the end of the sliding portion 41 away from the connecting portion 42 and the bottom of the sliding portion 41 and the support plate 2.

[0079] 5 and 6 , the armrest further includes the first latching slot 46 for returning the first latching block 52 to its initial position and a reset member 54 for driving the first sliding rod 521 to slide in the second moving slot 336 ; in this embodiment, the three first latching slots 46 are the first first latching slot 46 , the second first latching slot 46 and the third first latching slot 46 in the direction of the arrow in FIG. 5 , wherein, when the first latching block 52 is snapped into the third first latching slot 46 , the adjustment seat 4 is adjusted to the limit state; therefore, when the adjustment seat 4 is adjusted to the first latching block 52 being snapped into the third first latching slot 46 , the adjustment seat 4 needs to be reset When the cam 46 is in the third position, the first locking block 52 is guided by the first inclined surface 461 to leave the third first locking groove 46, that is, the first sliding rod 521 leaves the first avoiding groove 337; then the first sliding rod 521 is driven by the reset member 54 to slide to the second moving groove 336 away from the end of the first avoiding groove 337, and the rotating shaft of the first swinging rod 51 also slides together, limiting the swinging of the first swinging rod 51, so that the adjusting seat 4 can be slid to the initial state, and at the same time, the first sliding rod 521 is driven by the reset member 54 to slide back to the position corresponding to the first avoiding groove 337, so that the first locking block 52 is locked to the first first locking groove 46.

[0080] The first sliding rod 521 extends out of the adjustment block 33 at one end away from the mounting seat 3, that is, the first sliding rod 521 extends out of the adjustment block 33 at one end located at the upper half block 331, and the reset member 54 includes a driving seat 541, and the driving seat 541 is installed in the first sliding groove 43 at a position corresponding to the first sliding rod 521 extending out of the adjustment block 33, that is, the driving seat 541 is fixedly installed on the side of the cover plate 45 facing the first sliding groove 43 and corresponding to the position of the first sliding rod 521 extending out of the adjustment block 33, and the driving seat 541 is provided with a groove 542 for the first sliding rod 521 to slide on one side facing the first sliding rod 521, and the groove 542 extends in the sliding direction of the adjustment block 33, and the part of the first sliding rod 521 extending out of the adjustment block 33 is slidably mounted on the driving seat 541 through the groove 542; the first sliding rod 521 When the first locking block 52 leaves the third first locking groove 46, the first sliding rod 521 abuts against one of the end walls of the groove 542. When the adjusting seat 4 continues to slide, the first sliding rod 521 can be driven to slide to the second moving groove 336 away from the end of the first avoiding groove 337. When the adjusting seat 4 slides toward the initial state, when the first locking block 52 leaves the second first locking groove 46, the first sliding rod 521 abuts against the other end wall of the groove 542. When the adjusting seat 4 continues to slide, the first sliding rod 521 can be driven to slide to the corresponding first avoiding groove 337. The first locking block 52 is then locked into the first first locking groove 46 by the action of the first elastic member 531, completing the reset.

[0081] Of course, in other embodiments, the pallet 2 can not only move upward, but also adjust the position of the first locking slot 46 according to actual conditions so that the pallet 2 can move downward. The number of the first locking slots 46 can also be increased so that the pallet can not only move upward but also move downward. This will not be described in detail here.

[0082] The implementation principle of Example 1 is as follows: when the angle of the support plate needs to be adjusted, the user directly moves the support plate, causing the adjustment seat 4 to slide in the arc-shaped slide groove 31; the three first locking grooves 46 can complete the three-gear locking; and the rotation of the support plate cooperates to increase the overall angle adjustment range of the support plate;

[0083] When resetting is required, continue to move the support plate 2, the support plate 2 disengages from the third first positioning groove 46 and abuts against the groove wall of the first sliding groove 43, so that the first sliding rod 521 moves into the first avoidance groove 337 and moves to the second moving groove 336, and then move the support plate 2. When the first sliding rod 521 abuts against the end wall of the groove 542 of the driving seat 541, the first sliding rod 521 is pushed between the first avoidance groove 37 and the second moving groove 336, and then the first driving member 53 pushes the first positioning block 52 and the first sliding rod 521 back to the first avoidance groove 337, and the first positioning block 52 returns to the first positioning groove to complete the resetting.

[0084] As a further preferred embodiment, referring to Figures 9-17, the support rod 1 includes an inner tube 11 and an outer tube 12, both of which are hollow straight tubes. The outer tube 12 is sleeved on the inner tube 11, and a mounting tube 13 is sleeved between the outer tube 12 and the inner tube 11. The mounting tube 13 and the inner tube 11 are buckled together, and the bottom end of the mounting tube 13 is used for detachable installation on the seat. The outer tube 12 and the mounting tube 13 are relatively slidably connected in the length direction, that is, the outer tube 12 and the inner tube 11 are relatively slidably connected, and a mounting seat 3 is rotatably installed on the top of the outer tube 12. The relative position between the outer tube 12 and the inner tube 11 is limited by the third limiting component 7. A locking plate 14 is slidably installed in the inner tube 11, and a side groove 141 is provided on the bottom side wall of the locking plate 14. The plate 14 is connected to the outer cylinder 12; the locking plate 14 is installed with a mounting box 142, that is, the locking plate 14 is located at the side groove 141 and the mounting box 142 is detachably installed by bolts. A protruding opening is provided on one side of the outside of the mounting box 142, that is, a protruding opening is provided on the side of the side groove 141 outside the mounting box 142, and the protruding opening is connected to the mounting box 142. The third limiting component 7 is installed in the mounting box 142, and the side wall of the inner cylinder 11 is provided with a plurality of second clamping grooves 111 at intervals along the length direction, specifically, the side wall of the inner cylinder 11 and the position corresponding to the protruding opening are provided with a plurality of clamping grooves 111, and the plurality of clamping grooves 111 are arranged at equal intervals along the length direction of the inner cylinder 11, and the third limiting component 7 passes through the locking plate 14 through the protruding opening and is clamped in the second clamping groove 111.

[0085] 12-15, the third limiting assembly 7 includes a second swinging rod 71 and a second blocking block 72. The second swinging rod 71 is swingably mounted in the mounting box 142. One end of the second blocking block 72 is connected to the end of the second swinging rod 71 away from the rotating shaft, and the other end passes through the locking plate 14 through the protruding opening and is engaged with the second blocking groove 111. Specifically, one end of the second blocking block 72 is integrally formed with the end of the second swinging rod 71 away from the rotating shaft, and the other end passes through the mounting box 142 through the protruding opening and is engaged with a corresponding second blocking groove 111. When the second stopper 7 is in the unlock state, the locking plate 14 can be unlocked by loosening the locking plate 14. The third stopper 73 is used to lock the locking plate 14. The third stopper 73 is used to lock the locking plate 14. When the second stopper 7 is unlocked, the locking plate 14 can be unlocked. The third stopper 73 is used to lock the locking plate 14. When the locking cam 72 is in the closed position, the locking cam 72 is in the closed position, and the second locking cam 72 is in the closed position, so that the second locking cam 72 is locked. The third movable grooves 75 extend in the sliding direction of the locking plate 14, that is, the mounting box 142 is provided with third movable grooves 75 on both sides in the thickness direction of the locking plate 14 and corresponding to the rotating shaft of the swinging rod 51. The third movable grooves 75 extend in the sliding direction of the locking plate 14, and the third movable grooves 75 are connected to the outside of the mounting box 142. The two ends of the rotating shaft of the second swinging rod 71 are respectively slidably mounted on the mounting box 142 through the two third movable grooves 75, and the rotating shaft of the second swinging rod 71 is cylindrical; the end of the rotating shaft of the second swinging rod 71 is slidably mounted on the mounting box 142 through the third movable grooves 75.

[0086] The second reset member 74 includes: a second sliding rod 721 parallel to the rotation axis of the second swinging rod 71, that is, the second sliding rod 721 is parallel to the rotation axis of the second swinging rod 71, and the second sliding rod 721 is installed on the second blocking block 72. Specifically, the second sliding rod 721 is penetrated by the second blocking block 72 and is integrally formed with the second blocking block 72. The second sliding rod 721 is cylindrical, and the mounting box 142 is provided with a fourth moving groove 76 at the side wall of the third moving groove 75 and corresponding to the position of the second sliding rod 721, that is, the mounting box 142 is provided with a fourth moving groove 76 at the side wall of the third moving groove 75 and corresponding to the second second sliding rod 7 21 are provided with fourth movable grooves 76 at both ends, and the fourth movable grooves 76 are connected to the outside of the installation box 142. The ends of the second sliding rod 721 are slidingly installed on the installation box 142 through the fourth movable grooves 76, that is, both ends of the second sliding rod 721 are slidingly installed on the installation box 142 through the fourth movable grooves 76; the installation box 142 is provided with a second avoidance groove 77 at the top position corresponding to the fourth movable groove 76, and the second avoidance groove 77 extends in a direction perpendicular to the fourth movable groove 76. When the second sliding rod 721 is clamped into the second avoidance groove 77, the second clamping block 72 is clamped into the second clamping groove 111.

[0087] A driving groove 112 is provided on the side wall of the inner cylinder 11, which extends in the sliding direction of the locking plate 14, that is, a driving groove 112 is provided on one of the side walls of the inner cylinder 11 adjacent to the second locking groove 111, and one end of the second sliding rod 721 extends out of the locking plate 14 and is slidingly installed on the inner cylinder 11 through the driving groove 112, that is, the driving groove 112 extends in the sliding direction of the locking plate 14, and the end of the second sliding rod 721 close to the driving groove 112 extends out of the locking plate 14 through the fourth movable groove 76, and the end of the second sliding rod 721 extending out of the locking plate 14 is slidingly installed on the inner cylinder 11 through the driving groove 112.

[0088] When the locking plate 14 is in the limit position, the second locking block 72 is engaged with the locking groove 111 at the top, and the locking plate 14 is continuously pulled to make the second locking block 72 leave the second locking groove 111 at the top. At this time, the second locking block 72 is locked in the locking groove 112, and the locking plate 14 is locked. When the second locking block 72 moves to the position corresponding to the second locking slot 111 at the bottom, the bottom slot wall of the driving slot 112 pushes the second sliding rod 721 to slide back to the position corresponding to the second avoiding slot 77, so that the second locking block 72 is re-engaged in the second locking slot 111 at the bottom.

[0089] It should be noted that when the locking plate 14 slides upward, the second swinging rod 71 is prevented from sliding downward due to gravity by the elastic force of the third elastic member 731 .

[0090] As a further preferred embodiment, referring to Figures 9, 11 and 16, the support rod 1 includes an inner tube 11 and an outer tube 12, the outer tube 12 is sleeved on the inner tube 11, and the outer tube 12 and the inner tube 11 are relatively slidingly connected, and a mounting seat 3 is rotatably mounted on the top of the outer tube 12, and a limiting ring 121 is provided at one end of the outer tube 12 close to the mounting seat 3, and the outer tube 12 is provided with a second limiting component 6 for limiting the rotation position of the mounting seat 3.

[0091] The second limiting assembly 6 includes: a rotating ring 61 and a limiting block 62. The rotating ring 61 is fixedly mounted on one side of the mounting seat 3 close to the support rod 1, that is, the rotating ring 61 and the mounting seat 3 close to the support rod 1 are integrally formed and arranged in the middle position, and the rotating ring 61 is rotatably mounted on the outer cylinder 12. Specifically, the rotating ring 61 is sleeved on the rotating shaft 32, and the rotating ring 61 is rotatably mounted on the rotating shaft 32; the limiting block 62 is an elastic block. In this embodiment, the limiting block 62 is a rubber block. The limiting block 62 is mounted on one end of the outer cylinder 12 close to the rotating ring 61, that is, the limiting block 62 is fixedly mounted on the limiting ring 121. The outer wall of the rotating ring 61 is provided with a plurality of first locking grooves 611 at intervals along the circumferential direction. The limiting block 62 is engaged with the rotating ring 61 through the first locking grooves 611, so that the unlocking and locking of the rotating mounting seat 3 are completed by the squeezing and recovery of the limiting block 62.

[0092] 17 , the support plate 2 is slidably and rotatably mounted on the adjustment seat 4 , and the adjustment seat 4 is equipped with a fourth limiting assembly 8 for limiting the sliding position of the support plate 2 and a fifth limiting assembly 9 for limiting the rotational position of the support plate 2 .

[0093] The fourth limiting assembly 8 includes a sliding seat 81 and a locking member 82. A second sliding groove 21 is defined in the support plate 2 and extends in the sliding direction of the support plate 2. The sliding seat 81 is rotatably connected to the adjustment seat 4 and is slidably mounted on the support plate 2 via the second sliding groove 21. The locking member 82 is used to limit the sliding position of the sliding seat 81.

[0094] The locking member 82 includes: a locking block 821 and a third elastic member 822. The side wall of the sliding seat 81 is provided with a mounting groove 811, that is, the sliding seat 81 is provided with a mounting groove 811 on both sides in the sliding direction, and a locking member 82 is installed in each mounting groove. The locking block 821 is slidably installed on the sliding seat 81 through the mounting groove 811; the third elastic member 822 is installed at the locking block 821 and the bottom of the mounting groove 811. In this embodiment, the third elastic member 822 is a spring, and the two ends of the third elastic member 822 are fixedly installed at the locking block 821 and the bottom of the mounting groove 811 respectively; the support plate 2 corresponds to the groove wall of the second sliding groove 21 and corresponds to the locking block The position of 821 is provided with a plurality of card slots 22 arranged at intervals in the sliding direction of the sliding seat 81, that is, the slot wall of the support plate 2 corresponding to the second sliding slot 21 and the position corresponding to each locking block 821 are provided with a plurality of card slots 22, the card slots 22 are arc-shaped, and the plurality of card slots 22 are arranged at equal intervals in the sliding direction of the sliding seat 81; the locking block 821 extends out of the mounting groove 811 at one end away from the third elastic member 822 and is engaged with the card slot 22, and the locking block 821 is provided with an arc-shaped surface 8211 on the side close to the card slot 22. Through the guiding effect of the arc-shaped surface 8211, the support plate 2 can be unlocked and locked during the sliding process.

[0095] The fifth limiting assembly 9 includes: a locking disk 91 and a blocking portion 92. The locking disk 91 is sleeved on the adjusting seat 4 and rotatably installed on the rotating shaft of the sliding seat 81. The locking disk 91 is provided with a plurality of second locking grooves 911 spaced apart along the circumferential direction; the blocking portion 92 is an elastic block. In this embodiment, the blocking portion 92 is a rubber block; the blocking portion 92 is installed on the sliding seat 81, and the blocking portion 92 is connected to the locking disk 91 through the second locking groove 911, so that the unlocking and locking in the process of rotating the support plate 2 are completed by the squeezing and recovery of the blocking portion 92.

[0096] The above can achieve corresponding adjustments in the free combination of the position of the support plate 2 in the adjustment range when adjusting the relative position between the outer cylinder 12 and the inner cylinder 11, adjusting the horizontal angle position of the support plate 2, sliding the adjustment seat 4 to the tilted state of the support plate 2, adjusting the front and rear position of the support plate 2, and adjusting the support plate 2 to be different from the rotating mounting seat 3, so as to adjust to the required angle and position according to the user's sitting posture and usage environment, and achieve the best usage experience.

[0097] Example 2

[0098] 7 and 8 , the difference between this embodiment and embodiment 1 is that a sliding groove 34 is provided on the side of the mounting seat 3 close to the adjusting seat 4; the first limit assembly 5 includes a locking block 55 and a driving member 56, and the locking block 55 is slidably mounted on the mounting seat 3 through the sliding groove 34, and the locking block 55 slides toward the arrangement direction of the mounting seat 3 and the adjusting seat 4; the adjusting seat 4 is provided with locking grooves at intervals along the arc direction of the arc groove 31 on one side close to the mounting seat 3, that is, the adjusting seat 4 is provided with a plurality of locking grooves 47 on one side close to the mounting seat 3 and corresponding to the position of the locking block 55, and the plurality of locking grooves 47 are arranged at intervals in the arc direction of the arc groove 31, and the upward end of the locking block 55 extends out of the sliding groove 34, and the locking block 55 extends out of the sliding groove 34 and is engaged with the adjusting seat 4 through the locking groove 47; the driving member 56 is used to drive the locking block 55 to slide.

[0099] The locking block 55 has a second inclined surface 551 on both sides of the end extending out of the sliding slot 34, and the opposite side wall of the locking slot 47 has a guide surface 471 adapted to the second inclined surface 551, so that the locking block 55 can be more smoothly inserted into the locking slot 47.

[0100] 7 and 8, a mounting groove 35 is provided on the side wall of the mounting seat 3 at a position corresponding to the sliding groove 34. The mounting groove 35 extends in the horizontal direction and is connected to the sliding groove 34. The driving member 56 includes an unlocking block 561, a pushing block 562 and a second elastic member 563. The unlocking block 561 is slidably mounted on the mounting seat 3 through the mounting groove 35, and one end of the unlocking block 561 extends out of the mounting seat 3. The locking block 55 is provided with an inclined groove 552, which extends obliquely upward from one end of the locking block 55 near the bottom of the mounting groove 35. One end of the moving block 562 is fixedly connected to the unlocking block 561, and the other end is passed through the locking block 55 through the inclined groove 552; when the locking block 55 is inserted into the locking groove 47, the pushing block 562 is at the bottom of the inclined groove 552; in this embodiment, the second elastic member 563 is a spring, and the two ends of the second elastic member 563 are respectively fixedly installed at the bottom of the locking block 55 and the bottom of the sliding groove 34; therefore, when the user presses the unlocking block 561, the unlocking block 561 can be driven to retract into the sliding groove 34 by the guiding effect of the inclined groove 552, thereby completing the unlocking.

[0101] In Example 2, the structure of the support rod 1, the support plate 2, the connection structure between the support rod 1 and the mounting seat 3, and the connection structure between the support plate 2 and the adjustment seat 4 are all the same as those in Example 1, and will not be repeated here. In a preferred embodiment, a plurality of slots are provided on the adjustment seat 4, and the mounting seat 3 is provided with a first limiting component 5 for limiting the sliding position of the adjustment seat 4. The first limiting component 5 is provided with a card block or a ball. When the card block or the ball is inserted into different slots, the support plate 2 has different angles relative to the support rod 1. Specifically, as in Example 1, the slot is the first positioning slot 46, and the card block is the first positioning block 52; or as in Example 2, the slot is the locking slot 47, and the card block is the self-locking block 55. In other embodiments, the slot can also be a hemispherical groove, and the first limiting component 5 is correspondingly provided with a ball that is compatible with the hemispherical groove. The ball is inserted into the hemispherical groove to achieve the positioning of the adjustment seat 4.

[0102] Example 3

[0103] Referring to Figure 19 , the structure of Example 3 is substantially the same as that of Examples 1 and 2, with the difference being that an arcuate chute 31 is provided on the adjustment seat 4. Specifically, the side of the mounting seat 3 away from the support rod 1 has an upwardly convex arcuate surface, and the adjustment seat 4 is slidably mounted on the corresponding arcuate surface of the mounting seat 3. The support plate 2 is mounted on the adjustment seat 4, and the adjustment seat 4 has an upwardly concave arcuate chute 31 on the side facing the mounting seat 3. The arcuate surface of the arcuate chute 31 matches the arcuate surface of the mounting seat 3 away from the support rod 1, and the mounting seat 3 and the adjustment seat 4 slide relative to each other along the curvature of the arcuate chute 31.

[0104] In Example 3, the structures of the support rod 1 and the support plate, the connection structure between the support rod 1 and the mounting seat 3, and the connection structure between the support plate and the adjustment seat 4 can all be the same as those in Example 1 and will not be repeated here.

[0105] Example 4

[0106] Referring to Figure 20 , the structure of Example 4 is substantially the same as that of Examples 1-3, with the difference being that a first sliding groove 43 is defined within the mounting base 3, and a connecting block 32 is mounted on the side of the adjustment base 4 proximate to the mounting base 3. The connecting block 32 is disposed proximate to one end of the mounting base 3 and extends into the mounting base 3, with the adjustment block 33 slidingly engaging with the first sliding groove 43. In other words, compared to Examples 1-3, in Example 4, the first sliding groove 43 is disposed within the mounting base 3 rather than within the adjustment base 4, while the connecting block 32 and the adjustment block 33 extend from the adjustment base 4 into the mounting base 3.

[0107] The cross section of the adjusting block 33 is larger than the cross section of the connecting block 32 (specifically, the cross section area of ​​the adjusting block 33 is larger than the cross section area of ​​the connecting block 32). A connecting groove 44 connected to the first sliding groove 43 is provided on the side of the mounting seat 3 close to the adjusting seat 4. The connecting block 32 extends into the mounting seat 3 through the connecting groove 44. The adjusting block 33 is equipped with a first limiting assembly 5 for limiting the sliding position of the mounting seat 3. The first limiting assembly 5 includes: a first swinging rod 51 and a first blocking block 52. A swinging groove 333 is provided in the adjusting block 33. The first swinging rod 51 is swingably mounted through the swinging groove 333. In the adjusting block 33; a first extension port 334 connected to the swinging groove 333 is provided on one side of the adjusting block 33; the mounting seat 3 is located on the groove wall of the first sliding groove 43 and a plurality of first locking grooves 46 are provided at the position corresponding to the first extension port 334, and the plurality of first locking grooves 46 are arranged in the extension direction of the first sliding groove 43; one end of the first locking block 52 is connected to the first swinging rod 51, and the other end passes through the adjusting block 33 through the first extension port 334 and is locked in the first locking groove 46; the first limiting assembly also includes a first driving member 53 for driving the first swinging rod 51 to swing.

[0108] The first driving member 53 includes a first elastic member 531, which is respectively connected to the first swing rod 51 and the swing groove 333 on one side away from the first extension port 334; one side of each first positioning groove 46 in the arrangement direction is a first inclined surface 461; the armrest also includes a first reset member 54 at the first positioning groove 46 for driving the first positioning block 52 to reset to the initial position, and the swing groove 333 is provided with a first moving groove 335 on both sides in the vertical direction and corresponding to the rotating shaft of the first swing rod 51. The groove 335 extends in the length direction of the first sliding groove 43, and the two ends of the rotating shaft of the first swinging rod 51 are respectively slidably mounted on the adjusting block 33 through the first movable groove 335; the first locking block 52 is installed with a first sliding rod 521 parallel to the rotating shaft of the first swinging rod 51, and the swinging groove 333 is provided with a second movable groove 336 at the side wall where the first movable groove 335 is opened and at the position corresponding to the first sliding rod 521, and the two ends of the first sliding rod 521 are respectively slidably mounted on the adjusting block 33 through the second movable groove 336; the adjusting The first avoidance groove 337 is opened at the groove wall position of the block 33 corresponding to the second movable groove 336. When the first sliding rod 521 is clamped in the first avoidance groove 337, the first blocking block 52 is clamped in the first blocking groove 46; the first reset member 54 is used to drive the first sliding rod 521 to slide in the second movable groove 336. The first sliding rod 521 extends out of the adjustment block 33 away from one end of the mounting seat 3. The first reset member 54 includes a driving seat 541. The driving seat 541 is installed in the sliding groove corresponding to the first sliding rod 521 extending out of the adjustment block 33. The position of the driving seat 541 is provided with a groove 542 for the first sliding rod 521 to slide on one side, and the groove 542 extends in the sliding direction of the adjustment block 33; the adjustment block 33 includes an upper half block 331 and a lower half block 332, the lower half block 332 is connected to the connecting block 32, the upper half block 331 is covered on the side of the lower half block 332 away from the connecting block 32, and the upper half block 331 and the lower half block 332 are detachably connected; the swing groove 333 is provided between the upper half block 331 and the lower half block 332.

[0109] In Example 4, the structures of the support rod 1 and the support plate, the connection structure between the support rod 1 and the mounting seat 3, and the connection structure between the support plate and the adjustment seat 4 can all be the same as those in Example 1 and will not be repeated here.

[0110] The technical effects of the present invention are mainly reflected in the following aspects:

[0111] The support plate can be adjusted by cooperating with the adjustment seat and the mounting seat to meet the user's needs.

[0112] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A chair armrest, characterized in that: include: A support rod and a support plate, wherein a mounting seat is mounted on the top of the support rod; An arc-shaped slide groove is provided on a side of the mounting seat away from the support rod, an adjustment seat is slidably installed on the mounting seat corresponding to the arc-shaped slide groove, the adjustment seat slides along the curvature direction of the arc-shaped slide groove, the adjustment seat includes a sliding portion and a connecting portion connected to each other, the support plate is installed on the connecting portion, the sliding portion has an arc surface on a side close to the mounting seat and is adapted to the arc surface of the arc-shaped slide groove, and the sliding portion can move along the arc-shaped slide groove; or The mounting seat has a curved surface on the side away from the support rod, and an adjustment seat is slidably installed on the mounting seat corresponding to the curved surface. The support plate is installed on the adjustment seat, and the adjustment seat has an arc-shaped groove on the side facing the mounting seat. The arc-shaped groove is matched with the arc-shaped groove on the side of the mounting seat away from the support rod, and the mounting seat and the adjustment seat slide relative to each other along the curvature direction of the arc-shaped groove.

2. The chair armrest according to claim 1, characterized in that: The connecting portion supports the support plate, and the support plate is rotatably mounted on the connecting portion. The sliding portion is in an overall concave arc shape relative to the support plate. One end of the sliding portion away from the connecting portion is arranged upward relative to the bottom of the sliding portion, and there is a gap between the end of the sliding portion away from the connecting portion and the bottom of the sliding portion and the support plate.

3. The chair armrest according to claim 1, characterized in that: A first sliding groove is provided in the mounting seat, a connecting block is installed on one side of the adjusting seat close to the mounting seat, an adjusting block is provided on one end of the connecting block close to the mounting seat, the connecting block extends into the mounting seat, and the adjusting block is slidably matched with the first sliding groove.

4. The chair armrest according to claim 3, characterized in that: The cross-section of the adjusting block is larger than the cross-section of the connecting block, and a connecting groove connected to the first sliding groove is provided on a side of the mounting seat close to the adjusting seat, and the connecting block extends into the mounting seat through the connecting groove; the adjusting block is equipped with a first limiting component for limiting the sliding position of the mounting seat, and the first limiting component includes: a first swing rod and a first clamping block; a swing groove is provided in the adjusting block, and the first swing rod is swingably installed in the adjusting block through the swing groove; one side of the adjusting block is provided with a first extension opening connected to the swing groove, and the mounting seat is located at the groove wall of the first sliding groove and a plurality of first clamping grooves are provided at positions corresponding to the first extension opening, and the plurality of first clamping grooves are arranged in the extending direction of the first sliding groove, one end of the first clamping block is connected to the first swing rod, and the other end passes through the adjusting block through the first extension opening and is clamped in the first clamping groove; the first limiting component also includes a first driving member for driving the first swing rod to swing.

5. The chair armrest according to claim 4, characterized in that: The first driving member includes a first elastic member, the first elastic member is respectively connected to the first swing rod and the side of the swing slot away from the first extension port; one side of each first locking slot in the arrangement direction is a first inclined surface; the armrest also includes a reset member at the first locking slot for driving the first locking block to return to an initial position, the swing slot is provided with a first moving groove on both sides in the vertical direction and corresponding to the rotating shaft of the first swing rod, the first moving groove extends in the length direction of the first sliding groove, and the two ends of the rotating shaft of the first swing rod are respectively slidably installed on the adjusting block through the first moving groove; the first locking block is installed with a first sliding rod parallel to the rotating shaft of the first swing rod, and the swing slot is provided with a second moving groove on the side wall where the first moving groove is provided and at the position corresponding to the first sliding rod, and the two ends of the first sliding rod are respectively slidably installed on the adjusting block through the second moving groove The cam is configured to move the first end of the second end of the guide rail, and the second end of the second end of the guide rail is configured to move the first end of the second guide rail toward the guide rail, so that the cam can move relative to the first end of the second guide rail.

6. The chair armrest according to claim 1, characterized in that: A first sliding groove is provided in the adjustment seat, a connecting block is installed on a side of the mounting seat close to the adjustment seat, an adjusting block is provided on an end of the connecting block away from the mounting seat, the connecting block extends into the adjustment seat, and the adjusting block slides in cooperation with the first sliding groove.

7. The chair armrest according to claim 6, characterized in that: The cross-section of the adjustment block is larger than the cross-section of the connecting block. A connecting groove connected to the first sliding groove is provided on a side of the adjustment seat close to the mounting seat. The connecting block extends into the adjustment seat through the connecting groove. The connecting block is detachably connected to the mounting seat. The adjustment seat has an opening on one side close to the support plate, and the opening is connected to the first sliding groove. A cover plate is connected to the corresponding opening of the adjustment seat.

8. The chair armrest according to claim 4, characterized in that: The adjusting block is provided with a first limiting assembly for limiting the sliding position of the adjusting seat, the first limiting assembly comprising: a first swing rod and a first clamping block; a swing groove is provided in the adjusting block, and the first swing rod is swingably installed in the adjusting block through the swing groove; a first extension opening connected to the swing groove is provided on one side of the adjusting block, the adjusting seat is located on the groove wall of the first sliding groove and a plurality of first clamping grooves are provided at positions corresponding to the first extension opening, and the plurality of first clamping grooves are arranged in the extension direction of the first sliding groove, one end of the first clamping block is connected to the first swing rod, and the other end passes through the adjusting block through the first extension opening and is clamped in the first clamping groove; the first limiting assembly also comprises a first driving member for driving the first swing rod to swing.

9. The chair armrest according to claim 8, characterized in that: The first driving member includes a first elastic member, the first elastic member is respectively connected to the first swing rod and the side of the swing slot away from the first extension port; one side of each first positioning slot in the arrangement direction is a first inclined surface; the armrest also includes: a reset member at the first positioning slot for driving the first positioning block to return to an initial position, the swing slot is provided with a first moving slot on both sides in the vertical direction and corresponding to the rotating shaft of the first swing rod, the first moving slot extends in the length direction of the first sliding slot, and the two ends of the rotating shaft of the first swing rod are respectively slidably mounted on the adjusting block through the first moving slot; the first positioning block is installed with a first sliding rod parallel to the rotating shaft of the first swing rod, and the swing slot is provided with a side wall of the first moving slot and corresponds to the A second moving groove is provided at the position of the first sliding rod, and two ends of the first sliding rod are respectively slidably installed on the adjusting block through the second moving groove; a first avoiding groove is provided at the groove wall position corresponding to the second moving groove of the adjusting block, and when the first sliding rod is inserted into the first avoiding groove, the first locking block is locked in the first locking groove; the reset member is used to drive the first sliding rod to slide in the second moving groove, and the end of the first sliding rod away from the mounting seat extends out of the adjusting block, and the reset member includes a driving seat, which is installed at the position where the first sliding groove corresponds to the position where the first sliding rod extends out of the adjusting block, and the driving seat is provided with a groove for the first sliding rod to slide on one side of the driving seat toward the first sliding rod, and the groove extends in the sliding direction of the adjusting block.

10. The chair armrest according to claim 8, characterized in that: The adjusting block comprises an upper block and a lower block, the lower block is connected to the connecting block, the upper block is covered on a side of the lower block away from the connecting block, and the upper block and the lower block are detachably connected; the swinging groove is opened between the upper block and the lower block.

11. The chair armrest according to claim 4, characterized in that: A sliding groove is provided on one side of the mounting seat close to the adjusting seat; the first limiting assembly includes: a locking block and a driving member, the locking block is slidably mounted on the mounting seat through the sliding groove; locking grooves are provided at intervals along the arc direction of the arc-shaped sliding groove on one side of the adjusting seat close to the mounting seat, the locking block extends out of the sliding groove and is clamped on the adjusting seat through the locking groove; the driving member is used to drive the locking block to slide.

12. The chair armrest according to claim 11, characterized in that: The side wall of the mounting seat is provided with a mounting groove connected to the sliding groove, and the driving member includes an unlocking block and a pushing block, the unlocking block is slidably installed on the mounting seat through the mounting groove, and the unlocking block extends out of the mounting seat; the locking block is provided with an inclined groove, and the inclined groove extends obliquely upward from one end of the locking block close to the bottom of the mounting groove, one end of the pushing block is connected to the unlocking block, and the other end is penetrated into the locking block through the inclined groove.

13. The chair armrest according to claim 12, characterized in that: Second inclined surfaces are provided on both sides of the locking block extending out of one end of the sliding groove, and guide surfaces matching the second inclined surfaces are provided on the opposite side walls of the locking groove.

14. The chair armrest according to claim 1, characterized in that: The adjustment seat is provided with a plurality of slots, the mounting seat is provided with a first limit assembly for limiting the sliding position of the adjustment seat, the first limit assembly is provided with a block or a ball, and when the block or the ball is inserted into different slots, the support plate has different angles relative to the support rod.

15. The chair armrest according to claim 1, characterized in that: When the adjustment seat has multiple gears relative to the sliding direction of the slide groove, the multiple gears include an initial gear and a reset gear, and the support plate adjustment angle of each gear is different, the mounting seat is installed with a first limit assembly for limiting the sliding position of the adjustment seat, and the chair armrest is also provided with a reset member cooperating with the first limit assembly. In the initial gear, the support plate adjustment angle is the smallest. In the process of sliding from the initial gear to the reset gear, when reaching a gear other than the reset gear, the first limit assembly cooperates with the adjustment seat to limit the adjustment seat so that the adjustment seat cannot move to the initial gear; when the adjustment seat slides to the reset gear, the reset member releases the limit of the adjustment seat by the first limit assembly, and the support plate can move toward the initial gear direction.

16. The chair armrest according to claim 15, characterized in that: The connecting portion supports the support plate, and the support plate is rotatably mounted on the connecting portion. The sliding portion is in an overall concave arc shape relative to the support plate. One end of the sliding portion away from the connecting portion is arranged upward relative to the bottom of the sliding portion. There is a gap between the end of the sliding portion away from the connecting portion and the bottom of the sliding portion and the support plate. There is also an intermediate gear position between the initial gear position and the reset gear position. In the initial gear position, one end of the sliding portion away from the connecting portion extends out of the curvature of the arc-shaped slide groove, and in the reset gear position, one end of the sliding portion away from the connecting portion extends into the curvature of the arc-shaped slide groove.

17. The chair armrest according to claims 1 to 16, characterized in that: The support rod comprises an inner tube and an outer tube, the outer tube is sleeved on the inner tube, the outer tube and the inner tube are relatively slidably connected, the mounting seat is installed on the top of the outer tube, the relative position of the outer tube and the inner tube is limited by a third limiting component, a locking plate is slidably installed in the inner tube, and the locking plate is connected to the outer tube; a mounting box is installed on the locking plate, a protruding opening is provided on one side outside the mounting box, a third limiting component is installed in the mounting box, a plurality of second clamping grooves are spaced apart along the length direction on the side wall of the inner tube, the third limiting component passes through the locking plate through the protruding opening and is clamped in the second clamping groove.

18. The chair armrest according to claim 17, characterized in that: The third limiting assembly includes a second swing rod and a second locking block, the second swing rod is swingably installed in the installation box; one end of the second locking block is connected to the end of the second swing rod away from the rotating shaft, and the other end passes through the locking plate through the extension port and is locked in the second locking groove; the third limiting assembly also includes: a second driving member for driving the second swing rod to swing.

19. The chair armrest according to claim 18, characterized in that: The second driving member includes a third elastic member, the third elastic member is respectively connected to the second swing rod and a side of the installation box away from the extension port, and a third inclined surface is provided on the upward side of the second blocking block; the armrest also includes: a second reset member at the second blocking groove for driving the second blocking block to reset to an initial position; a third movable groove is provided on the side wall of the installation box in the thickness direction of the locking plate and corresponding to the rotating shaft of the second swing rod, the third movable groove extends in the sliding direction of the locking plate, and the rotating shaft end of the second swing rod is slidably mounted on the installation box through the third movable groove; The second reset member includes: a second sliding rod parallel to the rotating shaft of the second swing rod, the second sliding rod is installed on the second blocking block, the installation box is provided with a fourth moving groove at a side wall where the third moving groove is provided and at a position corresponding to the second sliding rod, and the end of the second sliding rod is slidably installed on the installation box through the fourth moving groove; the installation box is provided with a second avoidance groove at a top position corresponding to the fourth moving groove, and when the second sliding rod is inserted into the second avoidance groove, the second blocking block is connected to the second blocking groove; The side wall of the inner cylinder is provided with a driving groove extending in the sliding direction of the locking plate, one end of the second sliding rod extends out of the locking plate and is slidably mounted on the inner cylinder through the driving groove; when the locking plate slides upward until the second locking block leaves a second locking groove at the top, The end wall of the driving groove pushes the second sliding rod to be stuck into the bottom of the fourth moving groove.

20. The chair armrest according to any one of claims 1 to 16, characterized in that: The support rod comprises an inner cylinder and an outer cylinder, wherein the outer cylinder is sleeved on the inner cylinder, the outer cylinder and the inner cylinder are relatively slidably connected, and the mounting seat is rotatably mounted on the top of the outer cylinder.

21. The chair armrest according to claim 20, characterized in that The outer cylinder is provided with a second limit assembly for limiting the rotation position of the mounting seat, the second limit assembly comprises: a rotating ring and a limit block, the rotating ring is fixedly mounted on a side of the mounting seat close to the support rod, and the rotating ring is rotatably mounted on the outer cylinder; the limit block is an elastic block, the limit block is mounted on one end of the outer cylinder close to the rotating ring, the outer side wall of the rotating ring is provided with a plurality of first locking grooves at intervals along the circumferential direction, and the limit block is clamped on the rotating ring through the first locking grooves.

22. The chair armrest according to any one of claims 1 to 16, characterized in that: The support plate is slidably and rotatably mounted on the adjustment seat, and the adjustment seat is equipped with a fourth limit assembly for limiting the sliding position of the support plate and a fifth limit assembly for limiting the rotational position of the support plate.

23. The chair armrest according to claim 22, characterized in that The fourth limiting assembly includes: a sliding seat and a locking member, the support plate is provided with a second sliding groove; the sliding seat is rotatably connected to the adjustment seat, and the sliding seat is slidably mounted on the support plate through the second sliding groove; the locking member is used to limit the sliding position of the sliding seat; The locking member comprises: a locking block and a fourth elastic member, a mounting groove is provided on the side wall of the sliding seat, and the locking block is slidably mounted on the sliding seat through the mounting groove; the fourth elastic member is mounted on the locking block and the groove bottom of the mounting groove; the supporting plate is provided with a plurality of slots arranged at intervals in the sliding direction of the sliding seat at a position corresponding to the groove wall of the second sliding groove and corresponding to the locking block, and one end of the locking block away from the fourth elastic member extends out of the mounting groove and is clamped in the slot part, The locking block is provided with an arc-shaped surface on one side close to the slot portion; The fifth limiting assembly includes: a locking disk and a blocking portion, wherein the locking disk is sleeved on the rotating shaft of the adjusting seat and rotatably mounted on the sliding seat, and the locking disk is provided with a plurality of second locking grooves spaced apart along the circumferential direction; the blocking portion is an elastic block, which is mounted on the sliding seat, and is clamped to the locking disk through the second locking groove.

24. The chair armrest according to claim 4, 5 or 7, characterized in that: The seat armrest is also provided with a connecting plate that matches the connecting groove. The connecting plate is located on the outside of the connecting groove. A connecting through hole that communicates with the connecting groove is opened on the connecting plate. The connecting block passes through the connecting through hole and the connecting groove. The connecting plate can slide relative to the connecting groove under the drive of the connecting block to close the end of the connecting groove.

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