Angle adjuster and seat

Abstract

The utility model provides an angle adjuster and a seat, and relates to the technical field of seat angle adjustment. The angle adjuster comprises an angle adjuster body, a wedge block, an elastic piece and a pre-pressing piece. The angle adjuster body is provided with a neck ring, and the wedge block is assembled on the neck ring. The elastic piece is connected with the wedge block; the pre-pressing piece is arranged on the angle adjuster body and used for abutting against the elastic piece, so that in the process that the wedge block moves along the periphery of the neck ring, movement is more stable, shaking of the wedge block is reduced, the moving stability of the wedge block is improved, and shaking and abnormal sound can be reduced in the seat adjusting process, especially in the rapid folding process.

Description

TECHNICAL FIELD

[0001] The utility model relates to chair angle adjustment technical field, especially angle adjuster and seat. BACKGROUND

[0002] In the existing chair angle adjuster product, the cam driving wedge block moves in the eccentric annular space to realize the relative rotation of the inner and outer toothed plates, and then the angle adjustment of the seat back is realized. The structure usually has the following problems:

[0003] During the chair adjustment process, due to the load change and the part tolerance, the wedge block gap fluctuates, so that the wedge block will run in the eccentric space, or the two wedge blocks run together, causing the backrest to show shaking and abnormal noise; especially in the rapid folding adjustment process, the running speed of the angle adjuster exceeds the original design limit, the internal gap changes sharply during the running process, causing structure collision, thus producing abnormal noise and shaking.

[0004] In addition, the angle adjuster is assembled on the complex framework structure, and the stress change caused by the internal stress of the angle adjuster during the framework manufacturing and assembly process will also aggravate the abnormal noise and shaking of the angle adjuster. INVENTION CONTENTS

[0005] The utility model aims at providing an angle adjuster and a seat, which are beneficial to reduce the abnormal noise and shaking during the adjustment process. Especially in the process of rapid adjustment of large angle, the structure collision is reduced, and the abnormal noise and shaking are avoided.

[0006] In the first aspect, the utility model provides an angle adjuster, which comprises:

[0007] An angle adjuster body, wherein the angle adjuster body has a neck ring;

[0008] A wedge block, wherein the wedge block is assembled on the neck ring;

[0009] An elastic piece, wherein the elastic piece is connected with the wedge block;

[0010] A pre-pressing piece, wherein the pre-pressing piece is arranged on the angle adjuster body and is used for resisting the elastic piece to make the wedge block move smoothly along the outer periphery of the neck ring.

[0011] In the optional embodiment, the pre-pressing piece has a resisting surface and / or a resisting point, and the elastic piece resists the resisting surface and / or the resisting point.

[0012] In the optional embodiment, the pre-pressing piece is provided with a clamping groove, and the elastic piece is arranged in the clamping groove.

[0013] In an optional embodiment, the pre-pressing member and the angle adjuster body are integrally formed or separately connected; or, the angle adjuster body has a resisting portion as a pre-pressing member, and the resisting portion and the elastic member resist each other.

[0014] In an optional embodiment, the pre-pressing member is provided with a through hole, and the through hole is sleeved on the angle adjuster body.

[0015] Alternatively, the pre-pressing member is provided with a first plug-in part, the angle adjuster body is provided with a second plug-in part, and the first plug-in part and the second plug-in part are plugged in.

[0016] In an optional embodiment, the angle adjuster body comprises:

[0017] a first tooth plate provided with a first central hole;

[0018] a second tooth plate provided with a second central hole; the neck ring is connected with or integrally formed with the second tooth plate, and the neck ring and the second central hole are coaxially arranged;

[0019] the axis of the first central hole and the axis of the second central hole do not coincide; the first tooth plate and the second tooth plate are partially engaged, and the wedge block is movably arranged on the outer periphery of the neck ring.

[0020] The pre-pressing member is arranged on any one or more of the first tooth plate and the neck ring.

[0021] In an optional embodiment, the angle adjuster body further comprises a bushing connected with or integrally formed with the first tooth plate; the bushing and the first central hole are coaxially arranged;

[0022] an annular space is formed between the neck ring and the bushing; the wedge block is movably arranged in the annular space;

[0023] The pre-pressing member is arranged on any one or more of the first tooth plate, the neck ring and the bushing.

[0024] In an optional embodiment, the angle adjuster body further comprises a camshaft and a cam ring, the cam ring abuts against the wedge block, and the camshaft is in transmission connection with or integrally formed with the cam ring.

[0025] The pre-pressing member is arranged on any one or more of the first tooth plate, the neck ring, the camshaft and the cam ring.

[0026] In an optional embodiment, the pre-pressing member is sleeved on the camshaft or the cam ring; or, the pre-pressing member is plugged on the camshaft or the cam ring.

[0027] In an optional embodiment, the angle adjuster body further comprises a dust cover connected with or integrated with the first toothed plate, and the pre-pressing member is arranged on any one or more of the first toothed plate, the neck ring, and the dust cover.

[0028] In an optional embodiment, the angle adjuster body comprises a bushing connected with or integrated with the first toothed plate, a camshaft, a cam ring, and a dust cover, the cam ring abuts against the wedge block, the camshaft is in transmission connection with or integrated with the cam ring, and the dust cover is connected with or integrated with the first toothed plate.

[0029] The pre-pressing member is arranged on any one or more of the first toothed plate, the neck ring, the bushing, the camshaft, the cam ring, and the dust cover.

[0030] In an optional embodiment, the pre-pressing member comprises a toothed plate boss arranged on the first toothed plate, and the elastic member abuts against the toothed plate boss.

[0031] In an optional embodiment, the toothed plate boss is provided with a clamping groove, and the elastic member is clamped in the clamping groove.

[0032] In an optional embodiment, the wedge block comprises a first wedge block and a second wedge block symmetrically arranged along a center line, and the center line is perpendicular to the axis of the first center hole and the axis of the second center hole, respectively.

[0033] The pressure of the pre-pressing member acting on the elastic member is in the direction of the center line or symmetrically distributed about the center line.

[0034] In an optional embodiment, the elastic member comprises a pre-pressing abutting section and first and second supporting legs connected to both ends of the pre-pressing abutting section, the first supporting leg is connected to the first wedge block, the second supporting leg is connected to the second wedge block, and the pre-pressing abutting section is connected to the pre-pressing member.

[0035] In an optional embodiment, the pre-pressing abutting section comprises an intermediate part, and a midpoint of the intermediate part is located on the center line; the pre-pressing member has an abutting surface or a plurality of spaced-apart abutting points, and the abutting surface or the plurality of abutting points abut against the intermediate part.

[0036] In an optional embodiment, a plurality of protrusions are arranged on the pre-pressing member, the protrusions serve as abutting points, and the plurality of protrusions abut against the intermediate part, respectively.

[0037] In a second aspect, the utility model provides a seat comprising the angle adjuster according to any one of the preceding embodiments.

[0038] The seat and the angle adjuster provided in the embodiments of the utility model have the following beneficial effects:

[0039] The angle adjuster provided by the embodiment of the utility model, the pre-pressing part and the elastic part are arranged to limit the elastic part, and the elastic part is subjected to the abutting force of the pre-pressing part, so that the abutting force of the elastic part is applied to the wedge block to make the wedge block move more stably along the neck ring. In this way, the shaking of the wedge block can be reduced in the moving process of the wedge block, the stability of the wedge block is improved, and then the structure collision and shaking are avoided in the adjusting process of the angle adjuster, and the shaking and abnormal sound are reduced.

[0040] The seat provided by the embodiment of the utility model comprises the angle adjuster, the stable adjustment of the backrest angle can be realized, the structure collision is avoided, especially in the scene of large-angle adjustment such as rapid folding, the stability of the wedge block can still be improved, and the shaking and abnormal sound are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical scheme in the specific embodiment of the utility model or the prior art, the drawings needed to be used in the specific embodiment or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings.

[0042] Figure 1 The structure schematic view of one visual angle of the angle adjuster provided by the embodiment of the utility model is shown in the figure.

[0043] Figure 2 The first structure schematic view of the pre-pressing part of the angle adjuster provided by the embodiment of the utility model is shown in the figure.

[0044] Figure 3 The second structure schematic view of the pre-pressing part of the angle adjuster provided by the embodiment of the utility model is shown in the figure.

[0045] Figure 4 The split structure schematic view of the angle adjuster provided by the embodiment of the utility model is shown in the figure.

[0046] Figure 5 The structure schematic view of the elastic part and the cam ring connection of the angle adjuster provided by the embodiment of the utility model is shown in the figure.

[0047] Figure 6 The first structure schematic view of the wedge block of the angle adjuster provided by the embodiment of the utility model is shown in the figure.

[0048] Figure 7 The second structure schematic view of the wedge block of the angle adjuster provided by the embodiment of the utility model is shown in the figure.

[0049] Figure 8 The structure schematic view of the elastic part of the angle adjuster provided by the embodiment of the utility model is shown in the figure.

[0050] Figure 9 The structure schematic view of the elastic piece, the cam ring and the wedge block connection of the angle adjuster provided by the embodiment of the utility model;

[0051] Figure 10 The first structure schematic view of the elastic piece and the cam ring abutment of the angle adjuster provided by the embodiment of the utility model;

[0052] Figure 11 The second structure schematic view of the elastic piece and the cam ring abutment of the angle adjuster provided by the embodiment of the utility model;

[0053] Figure 12 The structure schematic view of the pre-pressing piece of the angle adjuster provided by the embodiment of the utility model is arranged on the cam shaft;

[0054] Figure 13 The structure schematic view of the angle adjuster provided by the embodiment of the utility model;

[0055] Figure 14 The structure schematic view of the angle adjuster provided by the embodiment of the utility model;

[0056] Figure 15 The third structure schematic view of the pre-pressing piece of the angle adjuster provided by the embodiment of the utility model;

[0057] Figure 16 The structure schematic view of the angle adjuster provided by the embodiment of the utility model;

[0058] Figure 17 The fourth structure schematic view of the pre-pressing piece of the angle adjuster provided by the embodiment of the utility model;

[0059] Figure 18 The structure schematic view of the angle adjuster provided by the embodiment of the utility model;

[0060] Figure 19 The fifth structure schematic view of the pre-pressing piece of the angle adjuster provided by the embodiment of the utility model;

[0061] Figure 20 The structure schematic view of the angle adjuster provided by the embodiment of the utility model;

[0062] Figure 21 Another structure schematic view of the first toothed plate of the angle adjuster provided by the embodiment of the utility model;

[0063] Figure 22 Another structure schematic view of the second toothed plate of the angle adjuster provided by the embodiment of the utility model;

[0064] Figure 23The sixth structure schematic diagram of the angle adjuster is provided.

[0065] Icon: 100-angle adjuster; 110-angle adjuster body; 101-annular space; 120-first tooth plate; 121-first center hole; 123-bushing; 130-second tooth plate; 131-second center hole; 133-neck ring; 140-camshaft; 150-cam ring; 160-dust cover; 170-hoop; 180-support ring; 200-wedge block; 201-midline; 202-first arc surface; 203-second arc surface; 210-first wedge block; 220-second wedge block; 211-first mounting hole; 221-second mounting hole; 213-first missing slot; 223-second missing slot; 230-elastic member; 231-pre-pressing bearing section; 232-intermediate part; 233-first supporting leg; 234-second supporting leg; 240-pre-pressing member; 241-bearing surface; 242-clamping groove; 243-through hole; 244-protrusion; 245-insertion slot; 246-first boss; 247-second boss. DETAILED DESCRIPTION

[0066] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0067] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0068] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0069] In the description of the utility model, it needs to be explained that, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model in that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0070] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0071] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0072] Some embodiments of the utility model will be described in detail below with reference to the drawings. In the case of no conflict, the following examples and features in the examples can be combined with each other.

[0073] The angle adjuster provided by the utility model embodiment can be applied to a seat and used for adjusting the inclination angle of the backrest of the seat to improve the use comfort of the seat. In some application scenarios, rapid folding of the backrest may occur, that is, the upright backrest is folded to a flat state in a short time, or the flat backrest is folded to an upright state in a short time.

[0074] In the rapid folding process, the running speed of the angle adjuster exceeds the original design limit, the gap of the internal structure changes sharply during the running process, and structure collision easily occurs, thereby generating abnormal noise and shaking.

[0075] The angle adjuster provided by the utility model embodiment can reduce the shaking and abnormal noise occurring in the backrest angle adjustment process of the seat, especially in the rapid folding process of the seat, to avoid structure collision and reduce shaking and abnormal noise.

[0076] Please combineFigure 1 The angle adjuster 100 comprises an angle adjuster body 110, a wedge block 200, an elastic member 230 and a pre-pressing member 240. The angle adjuster body 110 has a neck ring 133, and the wedge block 200 is assembled on the neck ring 133 and can slide along the outer periphery of the neck ring 133 during adjustment. The elastic member 230 is connected with the wedge block 200, and the pre-pressing member 240 is arranged on the angle adjuster body 110 and is used to abut against the elastic member 230 so that the wedge block 200 can move stably along the outer periphery of the neck ring 133. Due to the abutment between the pre-pressing member 240 and the elastic member 230, the angle adjuster 100 can reduce the shaking of the wedge block 200 during movement of the wedge block 200, improve the stability of movement of the wedge block 200, and reduce the shaking and abnormal sound of the seat during adjustment, especially during rapid folding.

[0077] Please refer to Figure 2 It can be understood that the pre-pressing member 240 has an abutment surface 241 and / or an abutment point, and the elastic member 230 abuts against the abutment surface 241 and / or the abutment point. In other words, the pre-pressing member 240 and the elastic member 230 can be in surface contact or in point contact, or the pre-pressing member 240 can be in surface contact at some positions and in point contact at some positions. The abutment positions of the pre-pressing member 240 and the elastic member 230 can be one, two, three or more, which are not limited here.

[0078] Please refer to Figure 3 Optionally, the pre-pressing member 240 is provided with a clamping groove 242, and the elastic member 230 is arranged in the clamping groove 242. The clamping groove 242 can limit the elastic member 230 in the axial direction of the neck ring 133, so that the force of the elastic member 230 acting on the wedge block 200 is more stable and reliable.

[0079] In some embodiments, the pre-pressing member 240 and the elastic member 230 are in interference fit, which can better limit the elastic member 230, so that the force of the elastic member 230 acting on the wedge block 200 is more stable and reliable, the shaking of the wedge block 200 during movement is reduced, and the shaking and abnormal sound of the seat during adjustment are further reduced. Optionally, the elastic member 230 and the clamping groove 242 are in interference fit, which is beneficial to reduce the dramatic change of the distance between structures during adjustment and reduce the collision between structures.

[0080] Optionally, the pre-pressing member 240 and the angle adjuster body 110 are integrally formed or connected in a separate manner. The pre-pressing member 240 and the angle adjuster body 110 can be integrally formed, which is more stable in structure and can reduce the number of parts to be assembled later, thereby improving the assembly efficiency and convenience. Of course, the pre-pressing member 240 and the angle adjuster body 110 can also be connected in a separate manner, such as clamping, bonding, inserting, sleeving, riveting, magnetic adsorption, welding, threaded connection or bolt connection, which are not limited here.

[0081] Optionally, the pre-pressing member 240 is provided with a through hole 243 (see Figure 15 ), the through hole 243 is sleeved on the angle adjuster body 110, that is, the pre-pressing member 240 and the angle adjuster body 110 are connected in a sleeved manner. Alternatively, the pre-pressing member 240 is provided with a first plug-in part, the angle adjuster body 110 is provided with a second plug-in part, and the first plug-in part and the second plug-in part are plugged in to realize the plug-in connection of the pre-pressing member 240 and the angle adjuster body 110.

[0082] Alternatively, in some embodiments, the angle adjuster body 110 has an abutting part, which serves as the pre-pressing member 240, and the abutting part and the elastic member 230 abut. In other words, the pre-pressing member 240 is a part of the angle adjuster body 110, and the length and shape of the elastic member 230 can be adjusted adaptively so that the elastic member 230 and the angle adjuster body 110 abut, the angle adjuster body 110 limits the elastic member 230, and the elastic member 230 generates a pre-stress on the wedge block 200.

[0083] Please refer to Figure 4 and Figure 5 Optionally, the angle adjuster body 110 includes a first tooth plate 120 and a second tooth plate 130, the first tooth plate 120 is provided with a first central hole 121. The second tooth plate 130 is provided with a second central hole 131. The neck ring 133 is connected to the second tooth plate 130, and the neck ring 133 and the second tooth plate 130 can also be integrally formed. The neck ring 133 and the second central hole 131 are coaxially arranged. The axis of the first central hole 121 and the axis of the second central hole 131 do not coincide. Optionally, the axis of the first central hole 121 and the axis of the second central hole 131 are parallel to each other. The first tooth plate 120 and the second tooth plate 130 are partially engaged, and the wedge block 200 can move along the outer periphery of the neck ring 133. Among them, one of the first tooth plate 120 and the second tooth plate 130 is an inner tooth plate, and the other is an outer tooth plate. The pre-pressing member 240 is arranged on any one or more of the first tooth plate 120 and the neck ring 133.

[0084] Optionally, the angle adjuster body 110 further includes a bushing 123, the bushing 123 is connected with the first tooth plate 120 or integrally formed, and the bushing 123 and the first central hole 121 are coaxially arranged. The neck ring 133 and the bushing 123 form an eccentric annular space 101; the wedge block 200 is movably arranged in the annular space 101.

[0085] It should be noted that the cross section of the wedge block 200 is gradually changed, and the cross section of the annular space 101 in the circumferential direction is also gradually changed. The neck ring 133 and the second tooth plate 130 are integrally formed or interference fit, the bushing 123 is installed on the inner wall of the first central hole 121, and the bushing 123 and the first tooth plate 120 are interference fit. The wedge block 200 has two oppositely arranged first arc surfaces 202 and second arc surfaces 203 (seeFigure 6 ), the first arc surface 202 substantially abuts the outer circumferential surface of the neck ring 133, and the second arc surface 203 substantially abuts the inner circumferential surface of the bushing 123. When the wedge 200 moves, the outer circumferential surface of the neck ring 133 and the inner circumferential surface of the bushing 123 are pressed, respectively, so that the first tooth plate 120 and the second tooth plate 130 rotate relatively. One of the first tooth plate 120 and the second tooth plate 130 is connected to the backrest of the seat, and the other is connected to the seat portion of the seat, that is, the adjustment of the angle of the backrest can be realized.

[0086] The pre-pressing member 240 is arranged on any one or more of the first tooth plate 120, the neck ring 133, and the bushing 123. The pre-pressing member 240 generates a pre-stress on the elastic member 230 by pressing the elastic member 230 to deform, and the pre-stress acts on the wedge 200, so that the wedge 200 can move smoothly along the outer circumferential surface of the neck ring 133. It should be understood that the pre-pressing member 240 and the first tooth plate 120 can be integrally formed or connected in a separate body, the pre-pressing member 240 and the bushing 123 can be integrally formed or connected in a separate body, and the pre-pressing member 240 and the neck ring 133 can be integrally formed or connected in a separate body. Alternatively, any one or more of the first tooth plate 120, the neck ring 133, and the bushing 123 has a pressing portion, and the pressing portion serves as the pre-pressing member 240. That is, the pre-pressing member 240 is part of any one or more of the first tooth plate 120, the neck ring 133, and the bushing 123. The above-mentioned various arrangements of the pre-pressing member 240 can be combined without conflict.

[0087] Optionally, the angle adjuster body 110 further comprises a cam shaft 140 and a cam ring 150, the cam ring 150 abuts the wedge 200, and the cam shaft 140 is in transmission connection or integrally formed with the cam ring 150. The cam shaft 140 drives the cam ring 150 to move, so that the cam ring 150 pushes the wedge 200 to move, thereby realizing the relative rotation of the first tooth plate 120 and the second tooth plate 130. The pre-pressing member 240 is arranged on any one or more of the first tooth plate 120, the neck ring 133, the bushing 123, the cam shaft 140, and the cam ring 150.

[0088] Optionally, the pre-pressing member 240 can be arranged on the cam shaft 140, or arranged on the cam ring 150, or arranged on both the cam shaft 140 and the cam ring 150.

[0089] Optionally, the pre-pressing member 240 is sleeved on the cam shaft 140 or the cam ring 150; or the pre-pressing member 240 is inserted into the cam shaft 140 or the cam ring 150.

[0090] Optionally, the angle adjuster body 110 further comprises a dust cover 160 connected to the first toothed plate 120. The pre-pressing member 240 is arranged on any one or more of the first toothed plate 120, the neck ring 133, the bushing 123 and the dust cover 160. Optionally, the dust cover 160 and the first toothed plate 120 can be connected separately or integrally formed.

[0091] It is easily understood that in the angle adjuster body 110, the first toothed plate 120, the neck ring 133, the bushing 123, the cam shaft 140, the cam ring 150 and the dust cover 160 can all be provided with the pre-pressing member 240. That is, the pre-pressing member 240 can be arranged on any one or more of the first toothed plate 120, the neck ring 133, the bushing 123, the cam shaft 140, the cam ring 150 and the dust cover 160. The pre-pressing member 240 can be integrally formed with the above-mentioned parts, or connected separately, or be a part of the above-mentioned parts, as long as it can resist the elastic member 230 and make the elastic member 230 generate a pre-stress on the wedge block 200.

[0092] In combination with Figures 6 to 8 Optionally, the wedge block 200 comprises a first wedge block 210 and a second wedge block 220 symmetrically arranged along a center line 201. The center line 201 is perpendicular to the axis of the first center hole 121 and the axis of the second center hole 131 respectively. The resisting force of the pre-pressing member 240 on the elastic member 230 is distributed symmetrically about the center line 201 or in the direction of the center line 201, so that the wedge block 200 moves more stably.

[0093] In the embodiment, the elastic member 230 comprises a pre-pressing resisting section 231 and first and second legs 233 and 234 connected to both ends of the pre-pressing resisting section 231; the first leg 233 is connected to the first wedge block 210 and the second leg 234 is connected to the second wedge block 220; the pre-pressing resisting section 231 is connected to the pre-pressing member 240. The first wedge block 210 is provided with a first mounting hole 211 and the second wedge block 220 is provided with a second mounting hole 221. The first leg 233 is inserted into the first mounting hole 211 and the second leg 234 is inserted into the second mounting hole 221, so as to realize the connection between the elastic member 230 and the wedge block 200. The pre-pressing resisting section 231 of the elastic member 230 is substantially in the shape of a circular arc, and the first and second legs 233 and 234 are parallel to each other and extend along the axial direction of the circular arc. In other embodiments, the pre-pressing resisting section 231 can also be substantially in the shape of a square, a parallelogram, a triangle, an ellipse, a pentagon, a hexagon or any other shape, which is not limited here.

[0094] The first mounting hole 211 and the second mounting hole 221 can be round, square, strip-shaped, or other shapes, and can be through holes or blind holes. Of course, in some embodiments, the first mounting hole 211 and the second mounting hole 221 can also be designed as a first notch 213 and a second notch 223. The first notch 213 and the second notch 223 are respectively located at the ends of the first wedge 210 and the second wedge 220 that are close to each other, and the openings of the first notch 213 and the second notch 223 are arranged opposite to each other.

[0095] Optionally, the pre-compression support section 231 includes a middle section 232, the midpoint of which is located on the centerline 201; the first support leg 233 and the second support leg 234 are symmetrically arranged about the centerline 201. Optionally, the middle section 232 can be an arc segment, a straight segment, or a combination of both; no specific limitation is made here.

[0096] Please combine Figure 3 , Figure 9 The cam ring 150 is provided with a preload member 240, which protrudes from the outer circumferential surface of the cam ring 150. The preload member 240 and the cam ring 150 are integrally formed. Of course, the preload member 240 and the cam ring 150 can also be connected separately, such as by snap-fit, bonding, insertion, sleeve, riveting, magnetic adsorption, welding, threaded connection or bolt connection, etc., without specific limitations. The preload member 240 is provided with a groove 242, which can be an arc groove or a straight groove. The middle part 232 of the elastic member 230 is located in the groove 242, and the groove 242 limits the elastic member 230. The preload member 240 and the elastic member 230 are interference-fitted, and the preload member 240 causes the elastic member 230 to deform and generate prestress.

[0097] The pre-compression member 240 has a bearing surface 241 or a plurality of abrasion points spaced apart. The bearing surface 241 or the plurality of abrasion points abut against the middle part 232. That is, the middle part 232 may have one abrasion position or multiple abrasion positions.

[0098] Please combine Figure 10 The middle part 232 of the elastic member 230 and the pre-compression member 240 are in surface contact, that is, the entire bearing surface 241 on the pre-compression member 240 is in contact with the middle part 232.

[0099] Please combine Figure 11Optionally, the pre-compression member 240 has multiple abutment points, each abutment point being a protrusion 244. In other words, the pre-compression member 240 has multiple protrusions 244 spaced apart, and each of the multiple protrusions 244 abuts against the middle portion 232 of the elastic member 230. In this embodiment, the pre-compression member 240 has two protrusions 244 spaced apart, and each of the two protrusions 244 abuts against the middle portion 232 of the elastic member 230. The number of protrusions 244 can be one, two, three, four, or more, and is not specifically limited here. In this way, the middle portion 232 and the pre-compression member 240 achieve contact at multiple abutment points. Optionally, the multiple protrusions 244 are symmetrically distributed about the centerline 201.

[0100] It is understandable that the preload 240 may have one or more abutment positions. After the preload 240, elastic member 230, and wedge 200 are assembled, the wedge 200 will be subjected to a force along the centerline 201, allowing the wedge 200 to move more smoothly along the outer periphery of the neck ring 133. Since the middle part 232 is approximately located on the opposite side of the first leg 233 and the second leg 234, the direction of the prestress on the middle part 232 of the elastic member 230 is away from the direction of the first leg 233 and the second leg 234. This ensures that the wedge 200 moves more smoothly and reduces swaying.

[0101] Please combine Figure 12 , Figure 13 The preload component 240 is connected to the camshaft 140. The preload component 240 and the camshaft 140 can be integrally formed or separately connected. The preload component 240 protrudes from the camshaft 140. The preload component 240 has a groove 242, and the middle part 232 of the elastic component 230 is held in the groove 242. The groove 242 and the middle part 232 are interference-fitted, and the preload component 240 causes the middle part 232 of the elastic component 230 to deform and generate prestress. This prestress acts on the wedge block 200, making the wedge block 200 move more smoothly along the neck ring 133, thereby reducing vibration and abnormal noise during the adjustment process.

[0102] Please combine Figure 14 The preload component 240 is part of the angle adjuster body 110. Optionally, the side of the cam ring 150 away from the first support 233 and the second support 234 serves as the preload component 240. By shortening the length of the preload abutment section 231 of the elastic member 230, the contour of the preload abutment section 231 is changed, so that the middle part 232 abuts against the cam ring 150. Optionally, the cam ring 150 and the elastic member 230 are interference-fitted, which can both limit the elastic member 230 and generate prestress on the wedge block 200 after the elastic member 230 is assembled. Optionally, the cam ring 150 is provided with a groove 242, and the middle part 232 is held in the groove 242.

[0103] Please combine Figure 15 ,Figure 16 The preload component 240 and the angle adjuster body 110 are connected separately. Optionally, the preload component 240 and the cam ring 150 are connected separately. The preload component 240 is provided with a through hole 243, which is sleeved on the cam ring 150. The middle part 232 of the elastic element 230 abuts against the preload component 240, which can also achieve a similar technical effect.

[0104] Optional, please refer to Figure 17 , Figure 18 The preload component 240 is provided with a first insertion part, and the camshaft 140 is provided with a second insertion part. The first insertion part and the second insertion part are inserted into each other to realize the insertion connection between the preload component 240 and the angle adjuster body 110. Among the first insertion part and the second insertion part, one is a slot 245 and the other is a plug. The plug is inserted into the slot 245 to realize the fixed connection between the camshaft 140 and the preload component 240.

[0105] Please combine Figure 19 , Figure 20 If the first toothed plate 120 is an inner toothed plate and the second toothed plate 130 is an outer toothed plate, the toothed plate boss includes a first boss 246. The preload member 240 includes the first boss 246 disposed on the first toothed plate 120, and the elastic member 230 abuts against the first boss 246. Optionally, the first boss 246 can be integrally formed on the first toothed plate 120, and the bushing 123 is installed on the inner wall of the first boss 246, and the bushing 123 and the first boss 246 are interference-fitted. The middle portion 232 of the elastic member 230 abuts against the first boss 246. The first boss 246 causes the elastic member 230 to generate prestress. Of course, in some embodiments, the bushing 123 can also be thickened and heightened so that the middle portion 232 of the elastic member 230 abuts against the bushing 123, which is not specifically limited here.

[0106] Optionally, the first boss 246 is provided with a slot 242, in which the elastic member 230 is held. The first boss 246 adopts an annular boss design, and the slot 242 is opened along the circumference of the first boss 246 to form an annular groove. Since the elastic member 230 and the first boss 246 rotate relative to each other during adjustment, the annular groove can ensure that the middle part 232 can be well held in the slot 242 no matter what state it is adjusted to, thus achieving better limiting of the elastic member 230.

[0107] Optionally, lubricant can be stored in the slot 242. Since the elastic element 230 and the first boss 246 rotate relative to each other, the lubricant can lubricate the first boss 246 and the elastic element 230, thereby reducing frictional resistance, improving the smoothness of the wedge block 200 movement, reducing frictional loss, and extending the service life of the components.

[0108] Combination Figures 21 to 23The designs of the first toothed plate 120 and the second toothed plate 130 are interchangeable. If the first toothed plate 120 is an outer toothed plate, the second toothed plate 130 is an inner toothed plate. The toothed plate boss includes a second boss 247. The preload member 240 includes a second boss 247 disposed on the first toothed plate 120, and the elastic member 230 abuts against the second boss 247. A collar 133 is connected to or integrally formed on the second toothed plate 130. It has similar technical effects and will not be described further here.

[0109] It should be noted that the slot 242 on the preload component 240 can be additionally created, or it can be naturally formed after the components in the adjuster body 110 are installed, as long as it can limit the movement of the elastic component 230. In addition, if the elastic component 230 and the preload component 240 rotate relative to each other during adjustment, lubricant or the like can be applied to the preload component 240 or the elastic component 230 for lubrication.

[0110] It is worth noting that the components in the angle adjuster body 110 are not limited to those listed above. The pre-compression component 240 can be designed on any component of the angle adjuster body 110 according to the actual situation, as long as it can abut against the middle part 232 of the elastic component 230, so that the elastic component 230 generates a pre-stress acting on the wedge block 200, so that the wedge block 200 moves more smoothly along the outer periphery of the neck ring 133.

[0111] Alternatively, in some embodiments, the preload 240 may also be fixed on a carrier for mounting the angle adjuster body 110, which is not specifically limited here.

[0112] It is worth noting that the power for the drive wedge 200 to move along the outer circumference of the neck ring 133 comes from the force of the rotation of the camshaft 140. The camshaft 140 can be connected to a motor or similar device, which can provide driving force to the camshaft 140. The prestress generated by the elastic element 230 under the resistance of the preload element 240 reduces the swaying of the wedge 200 during movement, making the movement more stable.

[0113] Optionally, the angle adjuster body 110 also includes components such as a clamp 170 and a support ring 180. The clamp 170 is fixedly connected to the first toothed plate 120, providing axial support and limiting function. It should be understood that the clamp 170 does not impede the relative rotation of the first toothed plate 120 and the second toothed plate 130. The support ring 180 is connected to the camshaft 140, providing axial support and limiting function.

[0114] This utility model embodiment also provides a seat, including an adjuster 100 as described in any of the foregoing embodiments, a first toothed plate 120 and a second toothed plate 130 of the adjuster 100, one of which is connected to the backrest and the other to the seat. A wedge block 200 moves and presses against the neck ring 133 and the bushing 123, thereby causing the first toothed plate 120 and the second toothed plate 130 to rotate relative to each other, thus enabling the adjustment of the seat back angle. Because of the pre-pressing member 240 and the elastic member 230 providing support, the wedge block 200 can reduce wobbling during movement, improving the stability and smoothness of the wedge block 200's movement and preventing shaking and abnormal noise during adjustment.

[0115] In summary, the seat and angle adjuster 100 provided in this embodiment of the present invention have the following beneficial effects, including:

[0116] The angle adjuster 100 provided in this embodiment of the utility model is provided with a pre-compression member 240 and an elastic member 230 for support. The elastic member 230 is limited and subjected to the supporting force of the pre-compression member 240, so that the supporting force of the elastic member 230 acts on the wedge block 200, making the movement of the wedge block 200 along the neck ring 133 more stable. In this way, the shaking can be reduced during the movement of the wedge block 200, improving the stability of the movement of the wedge block 200, thereby ensuring that the angle adjuster 100 avoids structural collision and shaking during adjustment, and reduces vibration and abnormal noise. By providing a slot 242 on the pre-compression member 240, the elastic member 230 can be better limited, making the force of the elastic member 230 on the wedge block 200 more stable. In this embodiment, the design of the pre-compression member 240 is flexible and can be installed on any one or more of the multiple components of the angle adjuster body 110, with flexible layout space and strong adaptability.

[0117] The seat provided in this embodiment of the utility model includes the aforementioned angle adjuster 100, which can realize the smooth adjustment of the backrest angle and avoid structural collision. Especially in scenarios with large-angle adjustments such as rapid folding, it can still improve the stability of the movement of the wedge block 200, which is conducive to reducing vibration and abnormal noise.

[0118] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Any modifications, equivalent substitutions, improvements, etc., should be included within the protection scope of this utility model.

Claims

1. An angle adjuster, characterized in that, include: Angle adjuster body (110) having a collar (133); A wedge (200) is fitted onto the neck ring (133); An elastic element (230) is connected to the wedge block (200); A pre-compression member (240) is disposed on the angle adjuster body (110) and is used to abut against the elastic member (230).

2. The angle adjuster according to claim 1, characterized in that, The preloaded member (240) has a bearing surface (241) and / or a bearing point, and the elastic member (230) abuts against the bearing surface (241) and / or the bearing point.

3. The angle adjuster according to claim 1, characterized in that, The pre-compression member (240) is provided with a slot (242); the elastic member (230) is provided in the slot (242).

4. The angle adjuster according to any one of claims 1 to 3, characterized in that, The pre-compression member (240) and the angle adjuster body (110) are integrally formed or separately connected; or, the angle adjuster body (110) has a supporting part, which serves as the pre-compression member (240), and the supporting part abuts against the elastic member (230).

5. The angle adjuster according to any one of claims 1 to 3, characterized in that, The pre-compression component (240) is provided with a through hole (243), and the through hole (243) is sleeved on the angle adjuster body (110); Alternatively, the pre-compression member (240) may be provided with a first insertion part, and the angle adjuster body (110) may be provided with a second insertion part, wherein the first insertion part and the second insertion part are inserted together.

6. The angle adjuster according to claim 1, characterized in that, The angle adjuster body (110) includes: First toothed plate (120); the first toothed plate (120) is provided with a first central hole (121); Second toothed plate (130); the second toothed plate (130) is provided with a second central hole (131); The collar (133) is connected to or integrally formed with the second toothed plate (130); the collar (133) and the second center hole (131) are coaxially arranged; The axis of the first central hole (121) and the axis of the second central hole (131) do not coincide; the first toothed plate (120) and the second toothed plate (130) are partially engaged, and the wedge (200) is movably disposed on the outer periphery of the collar (133); The preload (240) is disposed on any one or more of the first toothed plate (120) and the neck ring (133).

7. The angle adjuster according to claim 6, characterized in that, The angle adjuster body (110) also includes a bushing (123), which is connected to or integrally formed with the first toothed plate (120); the bushing (123) and the first center hole (121) are coaxially arranged. An annular space (101) is formed between the collar (133) and the bushing (123); the wedge (200) is movably disposed in the annular space (101); The preload (240) is disposed on any one or more of the first toothed plate (120), the bushing (123), and the collar (133).

8. The angle adjuster according to claim 6, characterized in that, The angle adjuster body (110) also includes a camshaft (140) and a cam ring (150), the cam ring (150) and the wedge (200) abut against each other, and the camshaft (140) and the cam ring (150) are connected in a transmission or integrally formed; The preload element (240) is disposed on any one or more of the first toothed plate (120), the neck ring (133), the camshaft (140), and the cam ring (150).

9. The angle adjuster according to claim 8, characterized in that, The preload component (240) is sleeved on the camshaft (140) or the cam ring (150); or, the preload component (240) is inserted into the camshaft (140) or the cam ring (150).

10. The angle adjuster according to claim 6, characterized in that, The angle adjuster body (110) also includes a dust cover (160), which is connected to or integrally formed with the first toothed plate (120), and the pre-pressing member (240) is disposed on any one or more of the first toothed plate (120), the neck ring (133) and the dust cover (160).

11. The angle adjuster according to claim 6, characterized in that, The angle adjuster body (110) includes a bushing (123), a camshaft (140), a cam ring (150), and a dust cover (160). The bushing (123) is connected to or integrally formed with the first toothed plate (120). The cam ring (150) and the wedge (200) abut against each other. The camshaft (140) is connected to or integrally formed with the cam ring (150). The dust cover (160) is connected to or integrally formed with the first toothed plate (120). The preload component (240) is disposed on any one or more of the first toothed plate (120), the neck ring (133), the bushing (123), the camshaft (140), the cam ring (150), and the dust cover (160).

12. The angle adjuster according to claim 6, characterized in that, The pre-compression member (240) includes a toothed plate boss provided on the first toothed plate (120), and the elastic member (230) abuts against the toothed plate boss.

13. The angle adjuster according to claim 12, characterized in that, The toothed plate boss is provided with a slot (242), and the elastic element (230) is held in the slot (242).

14. The angle adjuster according to any one of claims 6 to 13, characterized in that, The wedge (200) includes a first wedge (210) and a second wedge (220) symmetrically arranged along the center line (201); the center line (201) is perpendicular to the axis of the first center hole (121) and the axis of the second center hole (131), respectively. The pressure exerted by the preload (240) on the elastic member (230) is along the direction of the centerline (201) or symmetrically distributed about the centerline (201).

15. The angle adjuster according to claim 14, characterized in that, The elastic element (230) includes a pre-compression support section (231) and a first leg (233) and a second leg (234) connected to both ends of the pre-compression support section (231); the first leg (233) is connected to the first wedge (210), and the second leg (234) is connected to the second wedge (220); the pre-compression support section (231) is connected to the pre-compression element (240).

16. The angle adjuster according to claim 15, characterized in that, The pre-compression abutment section (231) includes a middle part (232), the midpoint of which is located on the centerline (201); the pre-compression member (240) has an abutment surface (241) or a plurality of spaced abutment points, the abutment surface (241) or the plurality of abutment points abutting against the middle part (232).

17. The angle adjuster according to claim 16, characterized in that, The pre-compression member (240) is provided with a plurality of protrusions (244) spaced apart, the protrusions serving as abutment points; the plurality of protrusions (244) abut against the middle part (232) respectively.

18. A type of seat, characterized in that, Including the angle adjuster as described in any one of claims 1 to 17.

Images