Seat and armrest lifting mechanism thereof
By using an outer sleeve and a position adjustment groove in the armrest of the office chair, the trigger structure is eliminated, and simple height adjustment of the armrest is achieved. This solves the problems of structural complexity and aesthetics in the existing technology and reduces costs.
Patent Information
- Application Number
- CN202422950794.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-11-29
AI Technical Summary
The existing height adjustment structure of office chair armrests is complex, costly, and affects aesthetics. In addition, it requires exposed triggers, which limits the design.
The handrail lifting mechanism includes an outer tube, a handrail tube body, and a gear adjustment groove. The handrail can be easily raised and lowered by a gear component and a gear spring, eliminating the need for a trigger structure.
It achieves simple and convenient adjustment of the handrails, reduces costs and enhances the aesthetics of the design.
Smart Images
Figure CN223554556U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of seat, especially to a seat and handrail lifting mechanism thereof. BACKGROUND
[0002] Some chairs have more and more diversified structures and functions, and many of the handrails thereof are adjustable. Most of the handrails of office chairs on the market are designed with triggers, i.e. the handrails can be lifted up and down only when the triggers are manually pulled. The trigger is generally arranged on one side of the top of a stand, and the trigger is connected to a lifting adjusting structure inside the stand to realize the lifting of the handrail. The existing lifting adjusting structure is relatively complex, high in cost and troublesome to install and operate, and the trigger is exposed, affecting the appearance. Meanwhile, the existence of the trigger requires a hole to be opened on the stand, limiting the design of the entire handrail structure. Therefore, it is necessary to design a handrail lifting mechanism without trigger and simple in structure. SUMMARY
[0003] To solve the above problems, the first purpose of the utility model is to provide a handrail lifting mechanism, which is simple in structure and can conveniently realize the lifting and adjustment of the handrail.
[0004] To achieve the above purpose, the utility model adopts the following technical scheme:
[0005] A handrail lifting mechanism, comprising an outer sleeve tube for being connected to the side of a tray, a handrail tube body for being lifted and arranged in the outer sleeve tube, and a handrail body for being arranged on the upper end of the handrail tube body; characterized in that: the inner side of the outer sleeve tube is directly or indirectly provided with a gear adjusting groove, the gear adjusting groove comprises a sliding groove arranged along the length direction of the tube body, and a plurality of gear grooves communicated with the sliding groove and arranged along the direction of the sliding groove, and a guide inclined surface directed to the upper sliding groove is arranged above the gear grooves; an installation groove is arranged on the side wall of the handrail tube body, a gear piece is embedded in the installation groove, and a gear spring acting on the gear piece; a gear block is arranged on the side surface of the gear piece; when the handrail tube body is installed in the outer sleeve tube, the gear block extends into the gear adjusting groove, and the gear spring is used for pressing the gear block on the gear piece to the gear groove.
[0006] The utility model discloses adopt above -mentioned technical scheme, this technical scheme relates to a kind of handrails lifting mechanism, the handrails lifting mechanism includes handrail body, handrail pipe body and outer sleeve tube, handrail body is set on the upper end of handrail pipe body, and handrail pipe body is lifted and is set in the inside of outer sleeve tube. In specific scheme, gear adjusting groove is directly or indirectly built in the inside of outer sleeve tube, directly build refers to that gear adjusting groove is opened on the inner wall of outer sleeve tube, and interval build can be realized by the inner sleeve tube recorded below.And, gear piece and gear spring are provided in the mounting groove of the side wall of handrail pipe body;When handrail pipe body is installed in outer sleeve tube, gear block on gear piece is moved and set in gear adjusting groove, and gear block can be slidably adjusted in the sliding slot and multiple gear slots of gear adjusting groove, when handrail is pulled up, gear block can be along guide inclined plane and exit current gear slot and move to the sliding slot in upper side, and when external force is removed, gear spring is used to press gear block on gear piece to gear slot, so that handrail gear adjustment can be realized, and then handrail height is adjusted.
[0007] Through the above scheme, the handrails lifting mechanism is simple in structure, and handrail lifting adjustment can be conveniently realized.
[0008] In specific embodiment, the sliding slot further extends a section above the gear slot on the top, and the gear slot is communicated with the top end of the sliding slot through a guide inclined surface;The gear piece is provided with a hook, and a hook slot is built in the mounting groove;When the gear block moves to the top end of the sliding slot, the hook on the gear piece is hooked into the hook slot, so that the gear piece is fixed in the mounting groove;At this time, the gear block on the gear piece is always in the sliding slot, so that the handrail pipe body and the handrail body thereon lack support and are lowered. When the gear block is pressed against the bottom of the sliding slot, the hook on the gear piece is unhooked from the hook slot, and the gear spring is used to press the gear block on the gear piece to the gear slot;At this time, the gear piece is hooked into the gear slot to support the handrail pipe body and the handrail body under the action of the spring, so that the handrail height can be adjusted step by step upwards.
[0009] As a preferred, the gear piece is built with a positioning column, and the movable end of the gear spring is sleeved on the positioning column, and the other end of the gear spring is pressed against the spring cavity side wall of the mounting groove. The positioning column on the gear piece is used to set the positioning gear spring, so that the gear spring is prevented from being unhooked from the gear piece.
[0010] In specific embodiment, the mounting groove is provided with an adjusting area, and the hook slot is located on the side close to the spring in the adjusting area;When the gear block is slidably adjusted in the gear adjusting groove, the gear block and the gear piece around the gear block are in the adjusting area.
[0011] In a specific embodiment, the outer sleeve is embedded with an inner sleeve, and the gear adjusting groove is arranged on the sidewall of the inner sleeve. In this scheme, the inner sleeve is assembled with the handrail pipe body and the gear piece and the gear spring thereon in advance, and then is installed in the outer sleeve.
[0012] In a specific embodiment, the gear adjusting groove penetrates through the sidewall of the inner sleeve, the inner sleeve is provided with an access opening above the gear adjusting groove, and the access opening is detachably closed by a cover; the area of the access opening is not less than the installation groove. Based on the access opening, the gear piece and the gear spring on the handrail pipe body can be overhauled and debugged.
[0013] As preferred, the handrail pipe body is provided with an annular groove above and below the installation groove, and a snap ring is embedded in the annular groove; the outer sidewall of the snap ring is arranged with a plurality of outward protruding protrusions; in a natural state, the protrusions are beyond the groove opening of the annular groove. In this scheme, after the handrail pipe body is installed in the inner sleeve, the snap ring embedded in the annular groove can avoid mispositioning or disengagement of the handrail pipe body from the inner sleeve due to the protrusions arranged thereon, or based on the arrangement of the snap ring, the handrail pipe body can be positioned in the inner sleeve to avoid problems such as looseness and abnormal sound.
[0014] In a specific embodiment, the annular groove is formed with a barrier wall, and the snap ring is formed with a break; when the snap ring is installed in the annular groove, the barrier wall is in the break of the snap ring, and there is a deformation gap between the end of the snap ring and the barrier wall. When the handrail pipe body is installed in the inner sleeve, the deformation gap can be used for extrusion deformation of the snap ring.
[0015] The second purpose of the utility model is to provide a seat, which is characterized by comprising the handrail lifting mechanism as described above. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a structural schematic view of the assembled handrail lifting mechanism.
[0017] Figure 2 It is a schematic view of the outer sleeve in a separated state from the handrail lifting mechanism.
[0018] Figure 3 It is a schematic view of the assembly of the inner sleeve and the handrail pipe body.
[0019] Figure 4 It is a schematic view of the disassembly of the inner sleeve and the handrail pipe body.
[0020] Figure 5 It is a schematic view of the access opening on the inner sleeve.
[0021] Figure 6 It is a schematic view of the installation of the gear structure on the handrail pipe body.
[0022] Figure 7 A process diagram for installing a snap ring at the lower end of the handrail pipe body.
[0023] Figure 8 A diagram after installing a snap ring at the lower end of the handrail pipe body. DETAILED DESCRIPTION
[0024] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application.
[0025] In the description of the present application, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.
[0026] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more, unless otherwise explicitly limited.
[0027] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, 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 the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. Example 1
[0029] like Figures 1-8 As shown, this embodiment relates to a handrail lifting mechanism, including an outer sleeve 1 for connecting to the side of the tray, a handrail tube 3 that is lifted and disposed within the outer sleeve 1, and a handrail body 4 disposed at the upper end of the handrail tube 3. The inner side of the outer tube 1 is directly or indirectly provided with a gear adjustment groove 20. The gear adjustment groove 20 includes a sliding groove 21 arranged along the length of the tube body, and a plurality of gear grooves 22 communicating with the sliding groove 21 and along the direction of the sliding groove 21. A guide slope 23 pointing upward to the sliding groove 21 is constructed above the gear groove 22. An installation groove 30 is constructed on the side wall of the handrail tube 3. A gear component 41 and a gear spring 42 acting on the gear component 41 are embedded in the installation groove 30. A gear block 411 is provided on the side of the gear component 41. When the handrail tube 3 is installed in the outer tube 1, the gear block 411 extends into the gear adjustment groove 20, and the gear spring 42 is used to press the gear block 411 on the gear component 41 into the gear groove 22.
[0030] The handrail lifting mechanism includes a handrail body 4, a handrail tube 3, and an outer sleeve 1. The handrail body 4 is located at the upper end of the handrail tube 3, and the handrail tube 3 is lifted and lowered inside the outer sleeve 1. In a specific design, a gear adjustment groove 20 is directly or indirectly constructed on the inner side of the outer sleeve 1. Direct construction means that the gear adjustment groove 20 is opened on the inner wall of the outer sleeve 1, while indirect construction can be achieved through the inner sleeve 2 described below. Furthermore, a stop component 41 and a stop spring 42 are provided in the mounting groove 30 on the side wall of the handrail tube 3. When the handrail tube 3 is installed inside the outer sleeve 1, the stop block 411 on the stop component 41 is movably positioned in the stop adjustment groove 20. The stop block 411 can slide and adjust in the slide groove 21 and multiple stop grooves 22 of the stop adjustment groove 20. When the handrail is pulled up, the stop block 411 can exit the current stop groove 22 along the guide slope 23 and move to the upper slide groove 21. When the external force is removed, the stop spring 42 is used to press the stop block 411 on the stop component 41 against the stop groove 22. In this way, the handrail stop can be adjusted, thereby adjusting the handrail height.
[0031] In such Figure 2And 3 In the specific embodiment shown, the chute 21 further extends above the gear slot 22 at the top, which is communicated with the top end of the chute 21 through the guide slope 23; the catch hook 412 is arranged on the gear piece 41, and the hook slot 31 is built in the installation slot 30; when the gear block 411 moves to the top end of the chute 21, the catch hook 412 on the gear piece 41 is clamped into the hook slot 31, so that the gear piece 41 is fixed in the installation slot 30; at this time, the gear block 411 on the gear piece 41 is always in the chute 21, and the gear block 411 is not clamped into the gear slot 22, so that the handrail pipe body 3 and the handrail body 4 on it lack support and descend. When the gear block 411 is pressed against the bottom of the chute 21, the catch hook 412 on the gear piece 41 is detached from the hook slot 31, and the gear spring 42 is used to press the gear block 411 on the gear piece 41 towards the gear slot 22; at this time, the gear piece 41 is clamped into the gear slot 22 to support the handrail pipe body 3 and the handrail body 4 under the action of the spring, so that the height of the handrail can be adjusted step by step upwards.
[0032] As shown in Figure 4 And 6 As shown, the positioning column 413 is built on the gear piece 41, the movable end of the gear spring 42 is sleeved on the positioning column 413, and the other end of the gear spring 42 is pressed against the spring cavity side wall of the installation slot 30. The positioning column 413 on the gear piece 41 is used to pass through the positioning gear spring 42, so that the gear spring 42 is prevented from being detached from the gear piece 41.
[0033] As shown in Figure 7 In the specific embodiment shown, the installation slot 30 is provided with an adjustment area 32, and the hook slot 31 is located on the side of the adjustment area 32 close to the spring; when the gear block 411 is adjusted by sliding in the gear adjustment slot 20, the gear block 411 and the gear piece 41 around it are in the adjustment area 32.
[0034] As shown in Figures 2-5 As shown, the inner sleeve pipe 2 is embedded in the outer sleeve pipe 1, and the gear adjustment slot 20 is built on the side wall of the inner sleeve pipe 2. This scheme uses the inner sleeve pipe 2 to be provided with the gear adjustment slot 20, so that the inner sleeve pipe 2 can be assembled with the handrail pipe body 3 and the gear piece 41 and the gear spring 42 thereon in advance, and then installed in the outer sleeve pipe 1. In a specific embodiment, the gear adjustment slot 20 penetrates through the side wall of the inner sleeve pipe 2, the inner sleeve pipe 2 is provided with an inspection opening 25 above the gear adjustment slot 20, and the inspection opening 25 is detachably closed through the cover 26; the area of the inspection opening 25 is not less than the installation slot 30. Based on the inspection opening 25, the gear piece 41 and the gear spring 42 on the handrail pipe body 3 can be overhauled and debugged.
[0035] In addition, as shown in Figure 7 And 8As shown, the handrail pipe body 3 is provided with an annular groove 35 above and below the mounting groove 30, and a snap ring 5 is embedded in the annular groove 35; a plurality of outward protruding protrusions 52 are formed on the outer side wall of the snap ring 5; the protrusions 52 of the snap ring 5 exceed the groove of the annular groove 35 in the natural state. In the scheme, after the handrail pipe body 3 is installed in the inner sleeve pipe 2, the snap ring 5 embedded in the annular groove 35 can avoid the handrail pipe body 3 from being dislocated or separated from the inner sleeve pipe 2 due to the protrusions 52 arranged thereon, or the handrail pipe body 3 can be positioned in the inner sleeve pipe 2 based on the arrangement of the snap ring 5, so as to avoid problems such as loosening and abnormal sound. In a specific embodiment, a blocking wall 351 is formed in the annular groove 35, and a break 51 is formed on the snap ring 5; when the snap ring 5 is installed in the annular groove 35, the blocking wall 351 is in the break 51 of the snap ring 5, and there is a deformation gap between the end of the snap ring 5 and the blocking wall 351. When the handrail pipe body 3 is installed in the inner sleeve pipe 2, the deformation gap can be used for the snap ring 5 to be pressed and deformed and pressed in. Example 2
[0036] The second purpose of the utility model is to provide a seat comprising the handrail lifting mechanism described in example 1.
[0037] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0038] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model. The ordinary skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model without departing from the principles and purposes of the utility model.
Claims
1. A handrail lifting mechanism, comprising an outer sleeve (1) for being connected on the side of a tray, a handrail tube (3) being arranged in the outer sleeve (1) and being lifted, and a handrail body (4) arranged on the upper end of the handrail tube (3); characterized in that: The inner side of the outer sleeve (1) is directly or indirectly provided with a gear adjusting groove (20), which comprises a sliding groove (21) arranged along the length direction of the pipe body, and a plurality of gear grooves (22) communicated with the sliding groove (21) and arranged along the sliding groove (21); the gear grooves (22) are provided with a guide slope (23) pointing to the sliding groove (21) above; the side wall of the handrail pipe body (3) is provided with a mounting groove (30), the mounting groove (30) is embedded with a gear piece (41), and a gear spring (42) acting on the gear piece (41); the side surface of the gear piece (41) is provided with a gear block (411); when the handrail pipe body (3) is installed in the outer sleeve (1), the gear block (411) extends into the gear adjusting groove (20), and the gear spring (42) is used to press the gear block (411) on the gear piece (41) towards the gear groove (22); the inner side of the outer sleeve (1) is embedded with an inner sleeve (2), and the gear adjusting groove (20) is arranged on the side wall of the inner sleeve (2); the gear adjusting groove (20) penetrates the side wall of the inner sleeve (2), and the inner sleeve (2) is provided with an inspection opening (25) above the gear adjusting groove (20), and the inspection opening (25) is detachably closed by a cover (26); the area of the inspection opening (25) is not less than the mounting groove (30); the handrail pipe body (3) is provided with an annular groove (35) above and below the mounting groove (30), and the annular groove (35) is embedded with a snap ring (5); the outer side wall of the snap ring (5) is provided with a plurality of protruding portions (52) protruding outward; in a natural state, the protruding portions (52) protrude out of the groove of the annular groove (35); the annular groove (35) is formed with a blocking wall (351), and the snap ring (5) is formed with a break (51); when the snap ring (5) is installed in the annular groove (35), the blocking wall (351) is located in the break (51) of the snap ring (5), and there is a deformation gap between the end of the snap ring (5) and the blocking wall (351).
2. A handrail lift mechanism according to claim 1, characterised in that: The sliding groove (21) further extends a section above the gear groove (22) at the top, and the gear groove (22) is communicated with the top end of the sliding groove (21) through the guide slope (23); the gear piece (41) is provided with a hook (412), and the mounting groove (30) is provided with a hook groove (31); when the gear block (411) moves to the top end of the sliding groove (21), the hook (412) on the gear piece (41) is hooked into the hook groove (31), so that the gear piece (41) is fixed in the mounting groove (30); when the gear block (411) is pressed against the bottom of the sliding groove (21), the hook (412) on the gear piece (41) is pulled out of the hook groove (31), and the gear spring (42) is used to press the gear block (411) on the gear piece (41) towards the gear groove (22).
3. A handrail lift mechanism according to claim 2, wherein: The gear piece (41) is provided with a positioning column (413), the movable end of the gear spring (42) is sleeved on the positioning column (413), and the other end of the gear spring (42) is pressed against the spring cavity side wall of the mounting groove (30).
4. A handrail lift mechanism according to claim 2, wherein: The adjusting area (32) is arranged in the mounting groove (30), and the hook groove (31) is arranged on the side of the adjusting area (32) close to the spring; when the gear block (411) is slidingly adjusted in the gear adjusting groove (20), the gear block (411) and the gear parts (41) around the gear block (411) are in the adjusting area (32).
5. A seat, characterized by: The handrail lifting mechanism comprises the handrail lifting mechanism according to any one of claims 1-4.