Limiting assembly

Abstract

The utility model discloses a limiting assembly, which comprises a shell, a swing groove is formed in the shell, and an extending opening communicated with the swing groove is formed in one side of the shell; the swinging rod is connected into the swinging groove in a swinging manner; one end of the clamping block is connected to one end, far away from the rotating shaft, of the oscillating rod, and the other end of the clamping block penetrates out of the shell through the extending opening; and the driving piece is located between the swing rod and the side, away from the stretching-out opening, of the swing groove and used for driving the swing rod to swing. The limiting assembly is simple in structure and high in limiting stability, so that the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the field of chair armrests, in particular to a position limiting component. Background Art

[0002] Chairs are tools that people often use in their daily lives, and people will sit on them for a long time to do various things, so the comfort of the seats is very important; and the armrests of the seats are an important part of whether the seats are comfortable.

[0003] Existing seat armrests can adjust the positions of different axial directions of the armrests respectively; however, during adjustment, there may be a problem of poor positioning, and the armrests may easily retract after being adjusted to a suitable position, resulting in a poor user experience.

[0004] Therefore, based on the above problems, it is necessary to improve the existing limit assembly installed on the seat to solve the above problems. Utility Model Content

[0005] In view of the problems existing in the above-mentioned prior art, the utility model provides a limit assembly, which has a simple structure and high limit stability, so as to improve the user experience.

[0006] In order to solve the above technical problems, the technical solution of the utility model is:

[0007] A limit assembly, comprising:

[0008] A housing, wherein a swing groove is formed in the housing, and a projection port connected to the swing groove is formed on one side of the housing;

[0009] A swing rod, which is swingably connected in the swing slot;

[0010] A positioning block, one end of which is connected to the end of the swing rod away from the rotating shaft, and the other end of which is extended out of the shell through the extension opening;

[0011] The driving member is located between the swing rod and the side of the swing slot away from the extension port, and is used for driving the swing rod to swing.

[0012] Preferably, the shell comprises an upper half and a lower half, and the swing groove is arranged between the upper half and the lower half.

[0013] Preferably, the driving member comprises a first elastic member, and two ends of the first elastic member are respectively connected to a side of the swing rod away from the extension opening and a side of the swing groove away from the extension opening.

[0014] Preferably, first movable grooves are provided on both sides of the swing groove in the vertical direction and corresponding to the rotation axis of the swing rod, and both ends of the rotation axis of the swing rod are slidably mounted on the housing through the first movable grooves.

[0015] Preferably, the positioning block is installed with a sliding rod, and the swing groove is provided with a second moving groove at the side wall where the first moving groove is opened and at the position corresponding to the sliding rod, and both ends of the sliding rod are slidingly installed with the shell through the second moving groove.

[0016] Preferably, a position of the housing corresponding to the groove wall of the second movable groove is provided with an avoidance groove connected with the second movable groove, and when the sliding rod is inserted into the avoidance groove, the blocking block extends out of the extension opening.

[0017] Preferably, the second movable groove is respectively opened on the upper half block and the lower half block.

[0018] Preferably, it further comprises a connecting block, which is integrally formed with the connecting block, the upper half of the block covers a side of the lower half away from the connecting block, and the cross section of the shell is larger than the cross section of the connecting block.

[0019] Preferably, the upper half block and the lower half block are detachably connected by bolts.

[0020] Preferably, a first inclined surface is provided on one side of the positioning block.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The structure is simple and can improve the stability of the limit, so as to improve the user experience after the user adjusts the angle of the armrest according to the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an armrest with multiple adjustment methods according to an embodiment of the present application.

[0024] Figure 2 It is a cross-sectional view of the overall structure of an armrest with multiple adjustment methods according to an embodiment of the present application.

[0025] Figure 3 It is an exploded view of the overall structure of an armrest with multiple adjustment methods according to an embodiment of the present application.

[0026] Figure 4 yes Figure 2 A partial enlarged view of middle A.

[0027] Figure 5 This is a schematic diagram of the use of a first limit assembly of an armrest with multiple adjustment methods according to an embodiment of the present application.

[0028] Figure 6 This is a schematic diagram of the installation of the first limit assembly of an armrest with multiple adjustment methods in an embodiment of the present application.

[0029] Figure 7It is a schematic diagram of a support rod resetting structure of an armrest with multiple adjustment methods according to an embodiment of the present application.

[0030] Figure 8 It is a structural schematic diagram of an embodiment of the present application in which a mounting box of an armrest with multiple adjustment methods is installed on a locking plate.

[0031] Fig. 9 This is a schematic diagram of the installation of a second limit assembly of an armrest with multiple adjustment methods in an embodiment of the present application.

[0032] Fig.10 This is a schematic diagram of the installation of the third limit assembly of an armrest with multiple adjustment methods in an embodiment of the present application.

[0033] Fig.11 yes Fig.10 A partial enlarged view of B.

[0034] Fig.12 It is a schematic diagram of the resetting structure of an adjustment seat of an armrest with multiple adjustment methods according to an embodiment of the present application.

[0035] Fig.13 It is a schematic diagram of the installation structure of the fourth limit assembly and the fifth limit assembly of an armrest with multiple adjustment methods in an embodiment of the present application.

[0036] Fig.14 It is a structural schematic diagram of a limit assembly of the present application.

[0037] Fig.15 This is a schematic structural diagram of a position limiting component without an upper half block of the present application.

[0038] Description of reference numerals:

[0039] 1. Support rod; 11. Inner cylinder; 111. Clamping groove; 112. Driving groove; 12. Outer cylinder; 121. Limiting ring; 13. Mounting cylinder; 14. Locking plate; 141. Side groove; 142. Mounting box; 1421. First moving groove; 1422. Second moving groove; 1423. Avoiding groove; 2. Support plate; 21. First sliding groove; 22. Clamping groove; 3. Mounting seat; 31. Arc sliding groove; 32. Rotating shaft; 4. Adjusting seat; 41. Sliding part; 42. Connecting part; 43. Second sliding groove; 44. Connecting block; 45. Adjusting block; 451. Upper half block; 452. Lower half block; 453 , swing groove; 46, connecting groove; 47, cover plate; 5, first limit assembly; 51, swing rod; 52, blocking block; 521, first inclined surface; 53, driving member; 531, first elastic member; 54, reset member; 541, sliding rod; 6, second limit assembly; 61, rotating ring; 611, first locking groove; 62, limit block; 7, third limit assembly; 8, fourth limit assembly; 81, sliding seat; 82, locking member; 821, locking block; 8211, arc surface; 822, second elastic member; 9, fifth limit assembly; 91, locking disk; 911, second locking groove; 92, blocking block. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-15 , the specific implementation methods of the utility model are further described in detail to make the technical solution of the utility model easier to understand and grasp.

[0041] In this embodiment, it should be understood that the terms "middle", "upper", "lower", "top", "right side", "end", "front", "back", "middle", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply 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.

[0042] 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 and the like commonly used in the prior art, and therefore, it is not described in detail in this embodiment.

[0043] The following is combined with Figure 1-15 This application is described in further detail.

[0044] like Figure 4 , Fig.11 , Fig.12 , Fig.14 and Fig.15 As shown, a limit assembly includes:

[0045] A housing, a swinging groove 453 is provided in the housing, a swinging rod 51 is swingably connected in the swinging groove 453, and a protruding opening connected to the swinging groove 453 is provided on one side of the housing;

[0046] The positioning block 52 has one end connected to the end of the swing rod 51 away from the rotating shaft, and the other end is extended out of the housing through the extension opening, and a first inclined surface 521 is provided on one side of the positioning block 52;

[0047] The driving member 53 is located between the swing rod 51 and the side of the swing slot 453 away from the extension port, and is used to drive the swing rod 51 to swing. In the present embodiment, the driving member 53 includes a first elastic member 531, which is specifically a spring. The two ends of the first elastic member 531 are respectively connected to the side of the swing rod 51 away from the extension port and the side of the swing slot 453 away from the extension port.

[0048] The housing includes an upper block 451 and a lower block 452, which are detachably connected by bolts, and a swing groove 453 is provided between the upper block 451 and the lower block 452. The swing groove 453 has first movable grooves 1421 on both sides in the vertical direction corresponding to the rotation axis of the swing rod 51, and both ends of the rotation axis of the swing rod 51 are slidably mounted with the housing through the first movable grooves 1421.

[0049] The positioning block 52 is installed with a sliding rod 541, and the swing groove 453 is provided with a second moving groove 1422 at the side wall where the first moving groove 1421 is provided and at the position corresponding to the sliding rod 541. The two ends of the sliding rod 541 are respectively slidably installed with the housing through the second moving grooves 1422; the housing is provided with a avoiding groove 1423 connected to the second moving groove 1422 at the groove wall position corresponding to the second moving groove 1422. When the sliding rod 541 is inserted into the avoiding groove 1423, the positioning block 52 extends out of the extension port. The second moving grooves 1422 are respectively provided on the upper half block 451 and the lower half block 452.

[0050] like Figure 4 As shown, it also includes a connecting block 44, which is integrally formed with the connecting block 44, and the upper half block 451 covers the side of the lower half block 452 away from the connecting block 44, and the cross-section of the shell is larger than the cross-section of the connecting block 44.

[0051] The limit assembly has a simple structure and can improve the stability of the limit, thereby improving the user experience after the user adjusts the angle of the armrest according to usage requirements.

[0052] The above-mentioned limiting components are the first limiting component 5 and the third limiting component 7 mentioned below.

[0053] The present application discloses an armrest with multiple adjustment modes. Figure 1 and Figure 2The armrest includes a support rod 1 and a support plate 2. The support rod 1 includes an inner tube 11 and an outer tube 12. Both the inner tube 11 and the outer tube 12 are hollow straight tubes. The outer tube 12 is sleeved in the inner tube 11. 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 and connected with each other. 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; the relative position between the outer tube 12 and the inner tube 11 is limited by the first limit assembly 5.

[0054] Reference Figure 2 and Figure 3 The top of the outer cylinder 12 is rotatably mounted with a mounting seat 3, and the outer cylinder 12 is provided with a second limit assembly 6 for limiting the rotation position of the mounting seat 3; an arc-shaped slide groove 31 is opened on the side of the mounting seat 3 away from the support rod 1, and the arc-shaped slide groove 31 is "︶"-shaped, and the arc-shaped slide groove 31 is concavely arranged in the direction of the support rod 1; an adjustment seat 4 is slidably mounted on the mounting seat 3 corresponding to the arc-shaped slide groove 31; the adjustment seat 4 includes a sliding portion 41 and a connecting portion 42, the sliding portion 41 is arc-shaped, and the arc surface of the sliding portion 41 on one side close to the mounting seat 3 is adapted to the arc surface of the arc-shaped slide groove 31, and the sliding portion 41 is slidably mounted on the mounting seat 3 along the arc direction of the arc-shaped slide groove 31; by setting the sliding portion 41 in an arc shape, the fit between the sliding portion 41 and the arc-shaped slide groove 31 is tighter, and the sliding is smoother; the mounting seat 3 is provided with a third limit assembly 7 for limiting the sliding position of the adjustment seat 4.

[0055] One end of the connecting portion 42 is integrally formed with one end of the sliding portion 41, one end of the support plate 2 is slidably and rotatably installed on the adjusting seat 4, and there is a gap between the other end and the end of the sliding portion 41 away from the connecting portion 42, wherein the sliding direction of the support plate 2 is the front and rear position of the armrest installed behind the seat, and the adjusting seat 4 is installed with a fourth limiting component 8 for limiting the sliding position of the support plate 2 and a fifth limiting component 9 for limiting the rotational position of the support plate 2.

[0056] The above can achieve corresponding adjustments in the free combination of the position of the pallet 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 pallet 2, sliding the adjustment seat 4 to the tilted state of the pallet 2, adjusting the front and rear position of the pallet 2, and adjusting the pallet 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.

[0057] Reference Figure 2 and Figure 4A locking plate 14 is slidably installed in the inner cylinder 11, and the locking plate 14 extends in the length direction of the inner cylinder 11. The locking plate 14 is inserted into the inner cylinder 11, and the locking plate 14 is slidably installed in the inner cylinder 11; a rotating shaft 32 is rotatably installed in the middle position of one side of the mounting seat 3 close to the support rod 1, and the rotating shaft 32 is detachably installed on the locking plate 14 by bolts; a limiting ring 121 is fixedly installed on one end of the outer cylinder 12 close to the mounting seat 3, and the rotating shaft 32 is penetrated through the inner ring of the limiting ring 121. The limiting ring 121 is clamped between the mounting seat 3 and the locking plate 14 to complete the mutual locking between the mounting seat 3, the outer cylinder 12 and the locking plate 14, so that when the locking plate 14 is in the sliding process, it can drive the outer cylinder 12 to slide together.

[0058] Reference Figure 5 and Figure 6 The bottom side wall of the locking plate 14 is provided with a side groove 141, and the locking plate 14 is located at the side groove 141 and is detachably installed with an installation box 142 by bolts. The first limiting assembly 5 includes a swing rod 51, a blocking block 52 and a driving member 53, and the swing rod 51 is swingably installed in the installation box 142; a protruding opening is provided on one side of the side groove 141 outside the installation box 142, and the protruding opening is connected to the installation box 142; a plurality of blocking grooves 111 are provided on the side wall of the inner cylinder 11 and at the position corresponding to the protruding opening, and the plurality of blocking grooves 111 are arranged at equal intervals in the length direction of the inner cylinder 11; one end of the blocking block 52 is integrally formed with the end of the swing rod 51 away from the rotating shaft, and the other end passes through the installation box 142 through the protruding opening and is clamped in a corresponding one of the blocking grooves 111; the driving member 53 is used to drive the swing rod 51 to swing, so as to achieve the locking and unlocking of the locking plate 14.

[0059] The driving member 53 includes a first elastic member 531. In the present embodiment, the first elastic member 531 is a spring, and the two ends of the first elastic member 531 are respectively fixedly mounted on the side of the swing rod 51 away from the extension port and the side of the installation box 142 away from the extension port; a first inclined surface 521 is provided on the upward side of the locking block 52; thus, when the outer cylinder 12 is pulled, the locking block 52 can be retracted into the installation box 142 along with the swing rod 51 through the guiding effect of the first inclined surface 521, thereby completing the unlocking; the armrest also includes a reset member 54 at the locking groove 111 for driving the locking block 52 to reset to the initial position. In the embodiment, the initial position is the position when the locking block 52 is locked in a locking groove 111 located at the bottom.

[0060] Reference Figure 7 and Figure 8The mounting box 142 is provided with first movable grooves 1421 on both sides of the locking plate 14 in the thickness direction and corresponding to the rotating shaft of the swinging rod 51. The first movable grooves 1421 extend in the sliding direction of the locking plate 14. The first movable grooves 1421 are all connected to the outside of the mounting box 142. The two ends of the rotating shaft of the swinging rod 51 are respectively slidably mounted on the mounting box 142 through the two first movable grooves 1421, and the rotating shaft of the swinging rod 51 is cylindrical; the reset member 54 includes a sliding rod 541, which is parallel to the rotating shaft of the swinging rod 51, and the sliding rod 541 is penetrated by the positioning block 52 and is integrally formed with the positioning block 52. 41 is cylindrical; the installation box 142 is provided with a second movable groove 1422 at the side wall where the first movable groove 1421 is provided and at the two end positions corresponding to the sliding rod 541, the second movable groove 1422 is connected to the outside of the installation box 142, and the two ends of the sliding rod 541 are slidingly installed on the installation box 142 through the second movable groove 1422; the installation box 142 is provided with an avoidance groove 1423 at the top position corresponding to the second movable groove 1422, and the avoidance groove 1423 extends in a direction perpendicular to the second movable groove 1422, and when the sliding rod 541 is inserted into the avoidance groove 1423, the locking block 52 is locked in the locking groove 111.

[0061] Reference Figure 7 and Figure 8 , a driving groove 112 is provided on one side wall of the inner cylinder 11 adjacent to the locking groove 111, and the driving groove 112 extends in the sliding direction of the locking plate 14, and one end of the sliding rod 541 close to the driving groove 112 extends out of the locking plate 14 through the second moving groove 1422, and one end of the sliding rod 541 extending out of the locking plate 14 is slidably installed on the inner cylinder 11 through the driving groove 112; when the locking plate 14 is in the initial position, one end of the sliding rod 541 extending out of the locking plate 14 abuts against the bottom groove wall of the driving groove 112; and when the locking plate 14 is in the extreme position, the locking block 52 is locked in a locking groove 111 at the top, and the locking plate 14 is continuously pulled. 4, so that the locking block 52 leaves the topmost locking groove 111, at this time, one end of the sliding rod 541 extending out of the locking plate 14 abuts against the top groove wall of the driving groove 112, until the sliding rod 541 is pushed into the second moving groove 1422, restricting the swinging rod 51 from swinging, so that the locking plate 14 can be slid to the initial state, that is, the armrest is reset in the up and down adjustment direction; when the locking block 52 moves to the position corresponding to the bottommost locking groove 111, the bottom groove wall of the driving groove 112 pushes the sliding rod 541 to slide back to the position corresponding to the avoiding groove 1423, so that the locking block 52 is re-engaged in the bottommost locking groove 111.

[0062] It should be noted that when the locking plate 14 slides upward, the swing rod 51 will not slide downward due to gravity due to the elastic force of the first elastic member 531 .

[0063] Reference Figure 4 and Fig. 9 The second limiting assembly 6 includes a rotating ring 61 and a limiting block 62. The rotating ring 61 is integrally formed with the middle position of one side of the mounting seat 3 close to the support rod 1. The rotating ring 61 is sleeved on the rotating shaft 32, and the rotating ring 61 is rotatably installed on the rotating shaft 32; the limiting block 62 is an elastic block. In this embodiment, the limiting block 62 is a rubber block, and the limiting block 62 is fixedly installed on the limiting ring 121; the outer wall of the rotating ring 61 is provided with a plurality of first locking grooves 611 at equal intervals along the circumferential direction, and the limiting block 62 is clamped on the rotating ring 61 through the first locking grooves 611; thereby, the unlocking and locking of the rotating mounting seat 3 are completed through the squeezing and recovery of the limiting block 62.

[0064] Reference Figure 2 and Figure 4 A second sliding groove 43 is provided in the adjusting seat 4, and the second 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 44 is inserted into the side of the mounting seat 3 close to the adjusting seat 4, and an adjusting block 45 is integrally formed at the end of the connecting block 44 away from the mounting seat 3, and the cross section of the adjusting block 45 is larger than the cross section of the connecting block 44, and the adjusting block 45 and the connecting block 44 are detachably connected to the mounting seat 3 by bolts, and the bolts are connected from the side of the adjusting block 45 away from the connecting block 44. The connecting block 45 and the connecting block 44 are passed through and then threadedly installed on the mounting seat 3, so as to facilitate the disassembly and assembly of the connecting block 44 and the adjusting block 45; a connecting groove 46 is provided on the side of the sliding portion 41 close to the mounting seat 3, and the connecting groove 46 is parallel to the arc-shaped sliding groove 31 and connected to the second sliding groove 43. The connecting block 44 extends into the adjusting seat 4 through the connecting groove 46, and the adjusting block 45 is slidingly installed on the adjusting seat 4 through the second sliding groove 43; thereby, the adjusting seat 4 can stably slide on the mounting seat 3.

[0065] The adjustment seat 4 has an opening on one side close to the support plate 2, and the opening is connected to the second sliding groove 43. A cover plate 47 is clamped at the corresponding opening of the adjustment seat 4, and the cover plate 47 is buckled on the adjustment seat 4 along the circumferential direction; thus, when the cover plate 47 can be directly removed, the adjustment block 45 and the connecting block 44 can be disassembled and assembled.

[0066] Reference Figure 4 , Fig.10 and Fig.11 The adjusting block 45 includes an upper block 451 and a lower block 452. The lower block 452 is integrally formed with the connecting block 44. The upper block 451 covers the side of the lower block 452 away from the connecting block 44. Bolts are simultaneously passed through the upper block 451 and the lower block 452 to complete the detachable connection between the upper block 451 and the lower block 452.

[0067] The adjustment block 45 is provided with a swing groove 453 at a position between the upper block 451 and the lower block 452; the third limit assembly 7 is installed on the adjustment block 45 through the swing groove 453. In the present embodiment, the third limit assembly 7 is identical to the first limit assembly 5 in structure and usage principle, which will not be elaborated here. In order to facilitate reading and understanding, the relevant feature marks of the third limit assembly 7 in the figure adopt the relevant feature marks corresponding to the first limit assembly 5.

[0068] Reference Fig.11 and Fig.12 In addition, the structure and resetting principle of the reset member 54 for driving the locking block 52 in the first limiting component 5 to reset to the initial position are the same as those of the reset member 54 for driving the locking block 52 in the third limiting component 7 to reset to the initial position, which will not be described in detail here. In order to facilitate reading and understanding, the relevant feature marks of the reset member 54 for driving the locking block 52 in the third limiting component 7 to reset to the initial position in the figure adopt the relevant feature marks of the reset member 54 for driving the locking block 52 in the first limiting component 5 to reset to the initial position.

[0069] Reference Fig.13 The fourth limiting assembly 8 includes a sliding seat 81 and a locking member 82. A first sliding groove 21 is provided in the support plate 2, and the first sliding groove 21 extends in the sliding direction of the support plate 2; the sliding seat 81 is rotatably connected to the adjustment seat 4, and the sliding seat 81 is slidably installed on the support plate 2 through the first sliding groove 21; the sliding seat 81 is provided with mounting grooves 811 on both sides of the sliding direction, and a locking member 82 is installed in each mounting groove, and the locking member 82 includes a locking block 821 and a second elastic member 822, and the locking block 821 is slidably installed on the sliding seat 81 through the mounting groove 811; in this embodiment, the second elastic member 822 is a spring, and the first The two ends of the two elastic members 822 are fixedly mounted on the locking block 821 and the bottom of the mounting groove 811 respectively; a plurality of slots 22 are provided on the slot wall of the support plate 2 corresponding to the first sliding groove 21 and corresponding to the position of each locking block 821, and the slots 22 are arc-shaped, and the plurality of slots 22 are arranged at equal intervals in the sliding direction of the sliding seat 81, and the locking block 821 extends out of the mounting groove at one end away from the second elastic member 822 and is engaged with the slot 22, and a curved surface 8211 is provided on the side of the locking block 821 close to the slot 22; through the guiding effect of the curved surface 8211, the support plate 2 can be unlocked and locked in the process of sliding.

[0070] Reference Fig.13The fifth limiting component 9 includes a locking disk 91 and a clamping block 92. The locking disk 91 is sleeved on the rotating shaft of the adjusting seat 4 and rotatably installed on 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 clamping block 92 is an elastic block. In the present embodiment, the clamping block 92 is a rubber block. The clamping block 92 is fixedly installed on the sliding seat 81, and the clamping block 92 is clamped to the locking disk 91 through the second locking groove 911; thereby, the unlocking and locking in the process of rotating the support plate 2 are completed by squeezing and restoring the clamping block 92.

[0071] The implementation principle of an armrest with multiple adjustment methods in an embodiment of the present application is as follows: when the user needs to adjust the position of the support plate 2 according to his or her sitting posture or usage scenario, the support plate 2 can be directly pulled to make the outer tube 12 slide, thereby adjusting the up and down position of the support plate 2; the support plate 2 can also be adjusted at a horizontal angle by rotating the mounting seat 3; the support plate 2 can be tilted by sliding the adjustment seat 4; the front and rear position of the support plate 2 can be adjusted by sliding the support plate 2; the support plate 2 can also be rotated to make the support plate 2 further adjusted in the adjustment range when the mounting seat 3 is rotated.

[0072] In other embodiments, the support plate 2 can be rotatably mounted on the adjustment seat 4, and the connecting seat 3 is fixed on the outer cylinder 12 or is an integral structure with the outer cylinder 12; or the connecting seat 3 can be rotatably mounted on the outer cylinder 12, and the support plate 2 is fixedly connected to the connecting seat 3 or is an integral structure, which can also realize the adjustment of the support plate angle.

[0073] The technical effects of this utility model are mainly reflected in the following aspects:

[0074] The structure is simple and can improve the stability of the limit, so as to improve the user experience after the user adjusts the angle of the armrest according to the use requirements.

[0075] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A limit assembly, characterized in that: include: A housing, wherein a swing groove (453) is provided in the housing, and a protruding opening connected to the swing groove (453) is provided on one side of the housing; A swing rod (51) swingably connected to the swing groove (453); A positioning block (52), one end of which is connected to an end of the swing rod (51) away from the rotating shaft, and the other end of which is passed through the extension opening and is arranged outside the housing; A driving member (53) is located between the swing rod (51) and a side of the swing groove (453) away from the extension port, and is used to drive the swing rod (51) to swing.

2. The limiter assembly according to claim 1, characterized in that: The shell comprises an upper half block (451) and a lower half block (452), and the swing groove (453) is arranged between the upper half block (451) and the lower half block (452).

3. The limiter assembly according to claim 2, characterized in that: The driving member (53) comprises a first elastic member (531), and two ends of the first elastic member (531) are respectively connected to a side of the swing rod (51) away from the extension opening and a side of the swing groove (453) away from the extension opening.

4. The limiter assembly according to claim 2, characterized in that: The swing groove (453) is provided with a first movable groove (1421) on both sides in the vertical direction and corresponding to the rotation axis of the swing rod (51), and the two ends of the rotation axis of the swing rod (51) are respectively slidably mounted with the shell through the first movable groove (1421).

5. The limiter assembly according to claim 4, characterized in that: The positioning block (52) is installed with a sliding rod (541), and the swinging groove (453) is provided with a second moving groove (1422) at the side wall where the first moving groove (1421) is opened and at a position corresponding to the sliding rod (541), and the two ends of the sliding rod (541) are respectively slidably installed with the shell through the second moving groove (1422).

6. The limiter assembly according to claim 5, characterized in that: The housing is provided with a avoiding groove (1423) in communication with the second movable groove (1422) at a groove wall position corresponding to the second movable groove (1422); when the sliding rod (541) is inserted into the avoiding groove (1423), the blocking block (52) extends out of the extending opening.

7. The limiter assembly according to claim 5, characterized in that: The second movable groove (1422) is respectively opened on the upper half block (451) and the lower half block (452).

8. The limit assembly according to claim 2, characterized in that: It also comprises a connecting block (44) which is integrally formed with the connecting block (44); the upper half block (451) covers a side of the lower half block (452) away from the connecting block (44); and the cross section of the shell is larger than the cross section of the connecting block (44).

9. The limiter assembly according to claim 2, characterized in that: The upper half block (451) and the lower half block (452) are detachably connected via bolts.

10. The limit assembly according to claim 1, characterized in that: A first inclined surface (521) is provided on one side of the positioning block (52).

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