Height adjusting method of handrail
By arranging locking parts, elastic parts and locking parts between the armrest lift seat and the armrest, the pushing part cooperates with the grooves and abutment surfaces, stable locking and convenient adjustment of the seat armrest is achieved, solving the problem of unstable locking in the prior art and meeting diverse usage needs.
Patent Information
- Application Number
- CN202510467761.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2025-07-11
AI Technical Summary
The lifting function of the existing seat armrests is poor in locking, and cannot take into account the convenience of adjustment and the stability of state maintenance. The adjustment method is single and the cost is high, so it cannot meet the diverse needs in different situations.
By slidingly connecting the handrail lift seat to the handrail, locking parts, elastic parts, locking parts and control parts are arranged, and stable locking is achieved by cooperating with the pushing part and grooves and abutment surfaces. The rotating control parts switch states, eliminating movable gaps, and locking them with hard material pushing part and locking parts, and the elastic parts are used to unlock.
It realizes stable locking of the handrail, eliminates shaking, is convenient to operate, avoids misoperation, is compact in structure, is relatively low in cost, and meets the adjustment needs in different situations.
Smart Images
Figure CN120284080A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of furniture, and particularly to a method for adjusting the height of an armrest. Background Art
[0002] In today's society, with the continuous improvement of people's living quality, the expectations for various types of furniture are no longer limited to basic functionality, but rather pursue higher quality and diverse experiences.
[0003] Taking the common seat armrest as an example, traditional seat armrests often have a single function and cannot meet the diverse needs of users in different situations. For example, in an office scenario, people sometimes need to adjust the armrest to a specific height to obtain comfortable support during long hours of typing or writing; while when resting and relaxing, they hope that the armrest can flexibly change its angle to provide a more comfortable posture. However, existing seat armrests are difficult to simultaneously balance the convenience of adjustment and the stability of maintaining the state, which limits the overall functionality of the seat and the user experience.
[0004] Some existing seat armrests can achieve the lifting function and adjust to different heights to meet different needs of people. However, the adjustment methods are more or less the same, generally there are two types. One is to directly pull the armrest upward to achieve lifting, and its core is a self-circulating adjustment component; the other is to move the armrest up and down after pressing a button to achieve lifting, and its core is a button switch adjustment component. In addition, there are hardly any other adjustment methods, making the lifting of the armrest more monotonous.
[0005] In the above two methods, when locking, it is invariably necessary for an elastic member to provide elasticity to maintain stability during locking. However, in existing lifting armrests, due to problems with their adjustment methods and core components, the stability is often poor. Manufacturers only focus on how to keep the armrest at the current height and do not pay attention to the matching gaps and precision, because improving precision will greatly increase production costs. Therefore, when locking, although the armrest can be kept at the current height, the stability of the locking fit is poor, and there will be shaking in the front-back, left-right, and even up-down directions, resulting in a poor experience.
[0006] Due to cost considerations, the existing adjustment methods are limited in this regard. Therefore, there is an urgent need for a different method for adjusting the height of an armrest that can cleverly avoid these limitations and achieve stable lifting of the armrest. Summary of the Invention
[0007] To solve the above technical problems, the present invention provides a method for adjusting the height of an armrest. The armrest lifting seat is slidably connected to the armrest frame, and a locking portion, an elastic member, a locking member, and a control member are arranged in sequence therebetween. The locking member is slidably disposed, rotatably cooperates with the control member, and always abuts against the control member under the action of the elastic member. The pushing portion of the control member cooperates with the groove and the abutting surface of the locking member to achieve state switching. When the pushing portion is in the groove, the height of the armrest can be adjusted. After the adjustment is completed, the control member is rotated to make the pushing portion leave the groove and abut against the locking member, pushing the locking member to tightly lock with the locking portion, and the elastic member deforms, and the armrest enters the locked state. Different from the traditional method, this method uses the elastic member to restore and unlock, and relies on the pushing portion to lock, eliminating the movable gap and making the locking more stable. Moreover, the direction of rotating the control member is arbitrary, and both clockwise and counterclockwise can achieve the switching between the adjustment and the locked state, with convenient operation and effectively avoiding misoperation.
[0008] The technical solution of the present invention is realized as follows: A method for adjusting the height of an armrest: The lifting seat of the armrest is slidably connected to the armrest frame, and a locking portion, an elastic member, a locking member, and a control member are arranged in sequence between the lifting seat and the armrest frame; The locking member is slidably disposed between the lifting seat and the armrest frame, the control member is rotatably cooperated with the locking member, and the locking member always abuts against the control member under the action of the elastic member. A pushing portion is preset on the control member, a groove is correspondingly preset on the locking member, and an abutting surface is preset beside the groove; When the pushing portion is in the groove, the armrest is in the adjustment state, and the lifting seat is pulled up or pressed down to adjust the height of the armrest. After the adjustment is completed, the control member is rotated in any direction until the pushing portion leaves the groove and abuts against the abutting surface. At this time, the pushing portion pushes the locking member to lock and cooperate with the locking portion, and the elastic member deforms accordingly, and the armrest enters the locked state; When the armrest is in the locked state, the control member is rotated in any direction until the pushing portion returns to the groove, the elastic member restores deformation and pushes the locking member away from the locking portion, so that the armrest switches back to the adjustment state.
[0009] First, the function of the elastic member in the armrest lifting function is different from that in the prior art. In this method, the elastic member is used to drive the locking member away from the locking portion and keep abutting against the control member. That is, the elastic members in the prior art are all for locking, while the elastic member in this method is for restoring unlocking. For locking, it is achieved by the actual structure of the propulsion portion. Both the propulsion portion and the locking member are made of hard materials. When the propulsion portion pushes the locking member to lock with the locking portion, the locking fit is tighter than that in the prior art, which can effectively eliminate the movable clearance and prevent shaking in any direction in the locked state. When the propulsion portion is in the groove, the propulsion portion is in an inoperative state, and the elastic member can play a role in pushing the locking member back to its original position, making the armrest return to the adjusted state. Therefore, the logic of locking and unlocking in this method is completely opposite to that in the prior art, and a more stable locking fit is achieved thereby.
[0010] Secondly, in this method, rotating the locking member by a preset angle in any direction can switch the armrest between the adjusted state and the locked state. The rotation direction can be either clockwise or counterclockwise, which is very convenient and there is no need to worry about misoperation.
[0011] Preferably, there are at least two propulsion portions, and the multiple propulsion portions are evenly and spaced along the circumferential direction of the control member; the number of grooves is the same as the number of propulsion portions, and the multiple grooves are evenly and spaced along the circumferential direction of the locking member. The number of propulsion portions, grooves, and the form of uniform arrangement can improve the stability of the locking fit between the locking member and the locking portion, and it is more convenient to operate. No matter which direction it is rotated, it can be switched to another state.
[0012] Preferably, the rotation of the control member drives the locking member to slide along the axial direction of the control member. In this method, the operation mode and the driving mode are completely different from those in the prior art. First, the rotation of the control member is the input end, and the user only needs to rotate during operation, which ensures the simplicity, convenience, and labor-saving of the armrest lifting control; second, under the rotation of the control member, the locking member slides along its axial direction, and the sliding of the locking member is the output end. Here, the rotation becomes sliding, and both the direction and the motion mode have changed, which is very ingenious; the reason for the need for the locking member to slide is that the clearance generated by sliding is easier to eliminate. For example, when the sliding distance is slightly greater than the clearance between the locking member and the locking portion, a tight fit can be achieved, thus avoiding the generation of shaking; furthermore, the advantage of the locking member sliding along the axial direction of the control member is that it saves space and makes the structure more compact. The rotation of the control member makes the operation convenient, and the rotation in any direction can switch the state. The sliding of the locking member can also facilitate the elimination of the shaking clearance and maintain sufficient stability.
[0013] Preferably, the rotation axis of the control member is arranged along the sliding direction of the locking member, and the propulsion portion protrudes towards the locking member. To achieve the axial sliding of the locking member when the control member is rotated.
[0014] Preferably, the locking member slides in the left-right direction; two spaced-apart and parallel sliding shafts are preset on the handrail frame, and the locking member is slidably arranged on the sliding shafts; the axis of the sliding shafts is arranged in the left-right direction.
[0015] Preferably, a receiving groove is preset on the locking member, the receiving groove is arranged toward the control member, and the groove is arranged in the receiving groove; in the adjustment state, the control member sinks in the receiving groove; in the locking state, the locking member slides away from the control member, and the control member protrudes backward from the receiving groove out of the locking member. The receiving groove further makes the structure compact; the rotation of the control member in the receiving groove can also increase the stability during operation.
[0016] Preferably, the control member is in the shape of a disk, and the shape of the control member is conducive to its own rotational movement.
[0017] Preferably, a rotatable operating member is provided on the handrail frame, and the operating member includes a shaft rod, which passes through the elastic member, the locking member, and the control member; when the shaft rod is rotated, the shaft rod, the elastic member, and the locking member rotate relative to each other and drive the control member to rotate together. The shaft rod can keep the elastic member, the locking member, and the control member at the same height, so that their respective functions will not be invalidated; the shaft rod can avoid the elastic member and the locking member and rotate independently, and at the same time drive the control member to rotate, thereby realizing the rotation of the control member relative to the locking member.
[0018] Preferably, the operating member further comprises a knob, which is arranged to rotate synchronously with the shaft rod, and the user can rotate the knob to switch the state of the armrest. The knob protrudes outward from the lifting seat, making the operation more convenient and labor-saving.
[0019] Preferably, a first latching tooth is provided on the end surface of the locking member close to the locking portion, and a plurality of second latching teeth are provided on the locking portion, and the plurality of second latching teeth are distributed perpendicularly to the sliding direction of the locking member; when the propulsion portion pushes the locking member to slide forward, the first latching tooth meshes with the second latching tooth, and the locking portion and the locking member are locked and matched. The locking member and the locking portion are locked by meshing with the latching teeth.
[0020] Preferably, the locking member is provided with a plurality of the first latch teeth, which are distributed perpendicular to the sliding direction of the locking member. A large number of first latch teeth make the engagement of the latch teeth more firm and stable, further solving the shaking problem; further selecting a smaller size of latch teeth can also achieve a feeling close to stepless adjustment.
[0021] Preferably, two rows of first latch teeth are arranged at intervals on the locking member, two rows of second latch teeth are arranged at intervals on the locking portion, a first avoidance space is formed between the two rows of first latch teeth, a second avoidance space is formed between the two rows of second latch teeth, and the elastic member is arranged in the first avoidance space and the second avoidance space. The elastic member is cleverly arranged, avoiding the latch teeth and coexisting with the latch teeth, and further making the structure more compact.
[0022] Preferably, the elastic member is a spring or a spring.
[0023] Preferably, the pushing part has two first inclined surfaces, which are respectively located on both sides of the pushing part along the rotation direction of the control part; the groove has two second inclined surfaces that cooperate with the first inclined surfaces, and the abutting surface is connected to the second inclined surfaces; when the pushing part is in the groove, rotate the pushing part, and after the pushing part passes through the second inclined surfaces, it abuts against the abutting surface. The cooperation between the first and second inclined surfaces is more conducive to the pushing part entering and exiting the groove.
[0024] Preferably, when the pushing part rotates to the position where the first inclined surface cooperates with the second inclined surface at the abutting surface, the elastic force given by the elastic part to the locking part will cause the pushing part to enter the groove. This facilitates switching back to the adjustment state.
[0025] Preferably, the height from the top to the bottom of the pushing part is the pushing height; in the adjustment state, the locking part and the locking member are separated from each other under the action of the elastic part and have a spacing, and the pushing height is not less than this spacing. The pushing height is sufficient to ensure a firm and stable cooperation between the locking part and the locking member. Since they have an interference fit due to their dimensions when locked, there will be no wobbling in any direction.
[0026] Preferably, the locking part is fixedly arranged on the lifting seat along the height direction and is integrally formed with the lifting seat, and the locking member is slidably arranged on the armrest frame.
[0027] Preferably, a number of gear slots are provided on the lifting seats on both sides of the locking part, and the multiple gear slots are arranged along the height direction; an elastic gear member is provided on the locking member; in the adjustment state, when pulling or pressing down the lifting seat, the elastic gear member switches in different gear slots; and when switching from the locking state to the adjustment state, the elastic gear member still remains in the gear slot. This prevents the lifting seat from dropping directly when switching to the adjustment state, which may cause pinching of the hand or other injuries to the user.
[0028] The design starting point, concept and beneficial effects of the present invention adopting the above technical solutions are as follows: First of all, the role of the elastic part in the armrest lifting function is different from that in the prior art. The elastic part in this method is used to drive the locking member away from the locking part and keep abutting against the control part, that is, the elastic parts in the prior art are all for locking, while the elastic part in this method is for restoring unlocking; for locking, it is achieved by the real structure of the pushing part. Both the pushing part and the locking member are made of hard materials. When the pushing part pushes the locking member to lock with the locking part, the locking fit is tighter than that in the prior art, which can effectively eliminate the movable gap and prevent wobbling in any direction in the locking state. When the pushing part is in the groove, the pushing part is in an unworking state, and the elastic part can play a role in pushing the locking member back to its original position, so that the armrest returns to the adjustment state; therefore, the logic of locking and unlocking in this method is completely opposite to that in the prior art, and a more stable locking fit is achieved thereby.
[0029] Secondly, in this method, the armrest can be switched between the adjustment state and the locking state by rotating the locking piece in any direction at a preset angle. The rotation direction can be clockwise or counterclockwise, which is very convenient and there is no need to worry about misoperation.
[0030] In addition, in this method, the operation mode and driving mode are completely different from the prior art. First, the rotation of the control member is the input end, and the user only needs to rotate it during operation, ensuring that the armrest lifting control is simple, convenient and labor-saving; secondly, the locking member slides along its axial direction under the rotation of the control member, and the sliding of the locking member is the output end. The rotation here becomes sliding, and the direction and movement mode are changed, which is very clever; and the reason why the locking member needs to slide is that the gap generated by the sliding is easier to eliminate. For example, when the sliding distance is slightly larger than the gap between the locking member and the locking part, a tight fit can be achieved, thereby avoiding the generation of shaking; in addition, the advantage of the locking member sliding along the axial direction of the control member is that it saves space and makes the structure more compact. The rotation of the control member makes the operation convenient, and the rotation in any direction can switch the state. The sliding of the locking member can also facilitate the elimination of the shaking gap and maintain sufficient stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the lifting handrail in the embodiment of the present invention; Figure 2 The explosion of the state switching component and the lifting handrail in the embodiment of the present invention Figure 1 ; Figure 3 The explosion of the state switching component and the lifting handrail in the embodiment of the present invention Figure 2 ; Figure 4 It is a schematic diagram of the three-dimensional structure of the lifting seat and the locking part in the embodiment of the present invention; Figure 5 Schematic diagram of the three-dimensional structure of the locking member in the embodiment of the present invention Figure 1 ; Figure 6 It is a schematic diagram of the three-dimensional structure of the control component in the embodiment of the present invention; Figure 7 Schematic diagram of the three-dimensional structure of the locking member in the embodiment of the present invention Figure 2 ; Figure 8 A cross-sectional view of the state switching assembly and the lifting armrest in the locked state in an embodiment of the present invention; Figure 9 A cross-sectional view of the state switching assembly and the lifting armrest in the adjustment state in the embodiment of the present invention; Figure 10 It is a schematic diagram of the three-dimensional structure of the locking member and the control member in the locked state in the embodiment of the present invention; Figure 11Schematic three - dimensional structure diagram of the locking member and the control member in the adjusted state in the embodiment of the present invention; Figure 12 Schematic diagram of switching the armrest from the adjusted state to the locked state in the embodiment of the present invention.
[0032] Each reference numeral is: control member 1; pushing portion 11; first inclined surface 111; locking portion 2; second tooth 21; second avoidance space 22; locking member 3; groove 31; second inclined surface 311; first tooth 32; first avoidance space 33; accommodating groove 34; armrest frame 4; sliding shaft 41; lifting seat 5; installation space 51; avoidance groove 52; decorative cover 6; operating member 7; knob 71; shaft rod 72; gear position groove 8; abutting surface 9; elastic member 10; elastic gear member 12. Detailed implementation manners
[0033] In order to more clearly understand the above - mentioned objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0034] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.
[0035] In the description of the present invention, the terms "first", "second", "third", etc. are only used for the purpose of description and cannot be understood as indicating or implying relative importance.
[0036] The detailed implementation manners of the present invention are as follows: As Figure 12 shown, the present invention provides a method for adjusting the height of an armrest: The lifting seat 5 of the armrest is slidably and cooperatively connected with the armrest frame 4, and a locking portion 2, an elastic member 10, a locking member 3 and a control member 1 are arranged in sequence between the lifting seat 5 and the armrest frame 4; The locking member 3 is slidably arranged between the lifting seat 5 and the armrest frame 4, the control member 1 is rotationally cooperated with the locking member 3, and the locking member 3 is always in abutment with the control member 1 under the action of the elastic member 10; a pushing portion 11 is preset on the control member 1, a groove 31 is correspondingly preset on the locking member 3, and an abutting surface 9 is preset beside the groove 31; When the pushing part 11 is located in the groove 31, the armrest is in the adjustment state. Pull up or press down the lifting seat 5 to adjust the height of the armrest. After the adjustment is completed, rotate the control part 1 in any direction to make the pushing part 11 leave the groove 31 and abut against the abutting surface 9. At this time, the pushing part 11 pushes the locking part 3 to be in locking cooperation with the locking portion 2, and the elastic part 10 is deformed accordingly, and the armrest enters the locked state; When the armrest is in the locked state, rotate the control part 1 in any direction to make the pushing part 11 return to the groove 31. The elastic part 10 recovers its deformation and pushes the locking part 3 away from the locking portion 2, so that the armrest switches back to the adjustment state.
[0037] First of all, the function of the elastic part 10 in the armrest lifting function is different from that of the prior art. In this method, the elastic part 10 is used to drive the locking part 3 away from the locking portion 2 and keep abutting against the control part 1. That is, the elastic parts 10 in the prior art are all for realizing locking, while the elastic part 10 in this method is for restoring unlocking. For locking, it is realized by the real structure of the pushing part 11. Both the pushing part 11 and the locking part 3 are made of hard materials. When the pushing part 11 pushes the locking part 3 to be locked with the locking portion 2, the locking cooperation is closer than that of the prior art, which can effectively eliminate the movable clearance and prevent the locking state from shaking in any direction. When the pushing part 11 is in the groove 31, the pushing part 11 is in an unoperated state, and the elastic part 10 can play a role in pushing the locking part 3 back to its original position, so that the armrest returns to the adjustment state. Therefore, the logic of locking and unlocking in this method is completely opposite to that of the prior art, and a more stable locking cooperation is achieved thereby.
[0038] Secondly, in this method, rotating the locking part 3 by a preset angle in any direction can make the armrest switch between the adjustment state and the locked state. The rotation direction can be either clockwise or counterclockwise, which is very convenient and there is no need to worry about misoperation.
[0039] The control member 1 rotates to drive the locking member 3 to slide along the axial direction of the control member 1; the rotation axis of the control member 1 is arranged along the sliding direction of the locking member 3, and the propulsion portion 11 protrudes toward the locking member 3. In this method, the operation mode and the driving mode are completely different from the prior art. First, the rotation of the control member 1 is the input end, and the user only needs to rotate it during operation, which ensures that the armrest lifting control is simple, convenient and labor-saving; secondly, under the rotation of the control member 1, the locking member 3 slides along its axial direction, and the sliding of the locking member 3 is the output end. During this period, the rotation becomes sliding, and the direction and movement mode are changed, which is very clever; and the reason why the locking member 3 needs to slide is that the gap generated by the sliding is easier to eliminate, such as when the sliding distance is slightly larger than the gap between the locking member 3 and the locking portion 2, a tight fit can be achieved, thereby avoiding the generation of shaking; in addition, the advantage of the locking member 3 sliding along the axial direction of the control member 1 is that it saves space and makes the structure more compact. The rotation of the control member 1 makes the operation convenient, and the rotation in any direction can switch the state. The sliding of the locking member 3 can also facilitate the elimination of the shaking gap and maintain sufficient stability.
[0040] Specifically applied to a lifting handrail, the lifting handrail includes a state switching component, such as Figure 2-9 As shown, the state switching assembly includes a control member 1, an elastic member 10, a locking portion 2 and a locking member 3, wherein the locking member 3 is slidably arranged in a direction toward the locking portion 2, and the locking member 3 is selectively locked with the locking portion 2; the elastic member 10 is arranged between the locking portion 2 and the locking member 3 and is configured to always give the locking member 3 an elastic force to slide away from the locking portion 2; the control member 1 is rotatably matched with the locking member 3, and at least one propulsion portion 11 is provided on the control member 1, and the propulsion portion 11 protrudes from the surface of the control member 1 toward the locking member 3 and has a propulsion height in the sliding direction of the locking member 3; the locking member 3 is provided with at least one groove 31 corresponding to the propulsion portion 11; when the control member 1 is rotated until the propulsion portion 11 is located in the groove 31, the locking member 3 leaves the locking portion 2 under the action of the elastic member 10; when the control member 1 is rotated until the propulsion portion 11 leaves the groove 31, the propulsion portion 11 overcomes the elastic force of the elastic member 10 and pushes the locking member 3 to slide toward the locking portion 2, and the sliding distance of the locking member 3 is the propulsion height, and the locking portion 2 and the locking member 3 are locked and matched.
[0041] In the present solution, the separation or locking cooperation of the locking member 3 and the locking part 2 determines different states, and the state switching is realized by driving the locking member 3 to move through the action of the control member 1 and the elastic member 10. Furthermore, the action of the control member 1 on the locking member 3 is determined by the relative position relationship between the propulsion part 11 and the groove 31, and the different position relationship between the propulsion part 11 and the groove 31 is realized by the rotation of the control member 1; the rotation of the control member 1 and the movement of the locking member 3 are not in the same plane, which is different from the mechanism in the prior art that the state switching is realized by the movement of parts in the same plane. In addition, the present solution requires fewer parts, greatly reduces the interference or failure, and has stronger working stability; the state switching component has a simple and compact structure, ingenious design, can remain stable in a specific state, and is very efficient and reliable.
[0042] Furthermore, the advancement height is the distance from the top surface of the advancement portion 11 to the bottom of the advancement portion 11 or the end surface of the control member 1, that is, the height of the protrusion of the advancement portion 11. When the locking member 3 is separated from the locking portion 2, the locking member 3 and the locking portion 2 are separated from each other and have a spacing under the action of the elastic member 10, and the advancement height is not less than the spacing. Due to the influence of processing accuracy, it is difficult to achieve a advancement height equal to the spacing so that the locking member 3 and the locking portion 2 are completely locked. Therefore, in this embodiment, considering the actual situation, the advancement height is slightly larger than the spacing to ensure a firm and stable fit between the locking member 3 and the locking portion 2. When the two are locked, they have an interference fit due to their size, so that no shaking in any direction will occur.
[0043] Regarding the structures of the control member 1, the locking member 3 and the locking portion 2, specifically, Figure 2 , 3, as shown in FIGS. 5 - 11, the control member 1 is disc - shaped, the rotation axis of the control member 1 is arranged along the sliding direction of the locking member 3, the pushing part 11 is located on the end face of the control member 1 facing the locking member 3, the rotation direction of the control member 1 and the sliding direction of the locking member 3 are not in the same plane, and the operating member 7 for driving the control member 1 to move can be more diversified in setting; there are at least two pushing parts 11, and the multiple pushing parts 11 are arranged evenly along the circumferential direction; the number of grooves 31 on the locking member 3 is the same as that of the pushing parts 11, and the multiple grooves 31 are arranged evenly along the circumferential direction; the number of the pushing parts 11, the grooves 31 and the form of the even arrangement can improve the locking cooperation stability between the locking member 3 and the locking part 2; in this embodiment, the number of both the pushing parts 11 and the grooves 31 is three, the interval between every two pushing parts 11 is 60°, the span of each pushing part 11 is also 60°, and the grooves 31 are correspondingly arranged; further, in order to make the structure more compact and the work more stable, a circular receiving groove 34 is opened on the end face of the locking member 3 close to the control member 1, the control member 1 is rotatably arranged in the receiving groove 34 and the grooves 31 are arranged in the receiving groove 34; arranging the control member 1 in the receiving groove 34 of the locking member 3 makes the structure more compact, and the disc - shaped control member 1 is also beneficial to the rotation of the control member 1 in the receiving groove 34; in the locked state, the locking member 3 slides away from the control member 1, and relatively, the control member 1 protrudes backward from the receiving groove 34 out of the locking member 3.
[0044] In order to make the rotation of the control member 1 easier, the pushing part 11 is in the shape of a boss, the width of the pushing part 11 gradually increases from the top to the bottom, and moreover, the pushing part 11 has two first inclined surfaces 111. Along the rotation direction of the control member 1, the two first inclined surfaces 111 are respectively located on both sides of the pushing part 11. At the same time, the groove 31 has two second inclined surfaces 311 that cooperate with the first inclined surfaces 111, and the abutting surface 9 is connected to the second inclined surface 311; when the pushing part 11 is in the groove 31, rotate the pushing part 11, and after the pushing part 11 passes through the second inclined surface 311, it abuts against the abutting surface 9; the cooperation of the first and second inclined surfaces is more conducive to the pushing part 11 entering and exiting the groove 31.
[0045] More specifically, as Figure 2-4As shown in FIGS. 9 and 10, a first set of teeth 32 is provided on the end face of the locking member 3 close to the locking portion 2, and a plurality of second set of teeth 21 are provided on the locking portion 2. The plurality of second set of teeth 21 are distributed perpendicular to the sliding direction of the locking member 3. When the pushing portion 11 pushes the locking member 3 to slide forward by a distance of the advancing height, the first set of teeth 32 engages with the second set of teeth 21, and the locking portion 2 and the locking member 3 are locked and cooperated. A plurality of the first set of teeth 32 are provided on the locking member 3, and the plurality of first set of teeth 32 are distributed perpendicular to the sliding direction of the locking member 3. The large number of the first set of teeth 32 makes the engagement of the set of teeth more firm and stable, further solving the problem of shaking. Further, by selecting set of teeth with smaller sizes, a feeling closer to stepless adjustment can be achieved. Further, two rows of first set of teeth 32 are spaced apart on the locking member 3, and two rows of second set of teeth 21 are correspondingly spaced apart on the locking portion 2. A first avoidance space 33 is formed between the two rows of first set of teeth 32, and a second avoidance space 22 is formed between the two rows of second set of teeth 21. The elastic member 10 is disposed in the first avoidance space 33 and the second avoidance space 22. The first set of teeth 32, the second set of teeth 21 and the elastic member 10 are arranged very skillfully. After the elastic member 10 avoids the set of teeth, it coexists with the set of teeth, and further makes the structure more compact.
[0046] Still further, the elastic member 10 can be a leaf spring or a spring. In this embodiment, a leaf spring is selected. The leaf spring is bent and respectively abuts against the locking portion 2 and the locking member 3 to act on the locking member 3 away from the locking portion 2.
[0047] Further, as Figure 1-3 As shown in FIGS. 8-11, in addition to the above state switching assembly, the above liftable armrest further includes an armrest frame 4 and a lift seat 5. The armrest frame 4 is configured for main body support, and the lift seat 5 is configured as a supporting member for connecting the armrest. The lift seat 5 is slidably disposed on the armrest frame 4 in the height direction. The locking portion 2 is disposed on one of the armrest frame 4 or the lift seat 5, and the locking member 3 is slidably disposed on the other, and the sliding direction of the locking member 3 is perpendicular to the sliding direction of the lift seat 5. The liftable armrest has an adjustment state and a locking state. In the adjustment state, the pushing portion 11 is located in the groove 31, and the locking member 3 leaves the locking portion 2 under the action of the elastic member 10, and the lift seat 5 can slide on the armrest frame 4. In the locking state, the pushing portion 11 leaves the groove 31, and the pushing portion 11 pushes the locking member 3 to be locked and cooperated with the locking portion 2, and locks the lift seat 5 and the armrest frame 4. The above state switching assembly is applied to the armrest to realize the lifting function of the armrest, and makes the liftable armrest have an adjustment state and a locking state. In the adjustment state, the height of the lift seat 5 can be arbitrarily adjusted, and after the adjustment is completed, it is switched to the locking state to maintain the current height.
[0048] Specifically, the locking part 2 is fixedly arranged on the lifting seat 5 in the height direction and integrally formed with the lifting seat 5. There are two spaced and parallel sliding shafts 41 on the armrest frame 4, and the sliding shafts 41 are arranged along the sliding direction of the locking member 3; the locking member 3 is slidably arranged on the sliding shafts 41, and the control member 1 is rotatably arranged between the locking member 3 and the armrest frame 4; an operating member 7 is also rotatably arranged on the armrest frame 4 or the lifting seat 5, and the operating member 7 and the locking member 3 are arranged on the same one of the lifting seat 5 or the armrest frame 4, that is, the operating member 7 is rotatably arranged on the armrest frame 4; the operating member 7 and the control member 1 are linked and configured such that when the operating member 7 rotates, it drives the control member 1 to rotate.
[0049] Further, the armrest frame 4 is a bent plate member, and the lifting seat 5 is a housing, on which there is an installation space 51. The locking part 2 is located in the installation space 51, and the locking member 3, the control member 1, and the lifting seat 5 are all arranged in the installation space 51, and the locking member 3, the control member 1, and the lifting seat 5 are arranged in sequence from near to far from the locking part 2. On the one hand, the layout is reasonable to enable the functions to be realized smoothly, and on the other hand, the structure is more compact; the operating member 7 includes a shaft rod 72 and a knob 71, which are fixedly connected and can rotate synchronously. The knob 71 is located on the side of the lifting seat 5 away from the armrest rod and protrudes from the lifting seat 5; the shaft rod 72 is inserted into the lifting seat 5, the locking member 3, and the control member 1 and is rotatably connected to the armrest frame 4; the shaft rod 72 is rotationally matched with the lifting seat 5 and the locking member 3, and the shaft rod 72 is linked with the control member 1; the knob 71 protrudes from the lifting seat 5, making the operation more convenient and labor-saving; the shaft rod 72 passes through the lifting seat 5, the locking member 3, and the control member 1 and is rotatably connected to the armrest frame 4 very skillfully, integrating the locking member 3 and the control member 1, and while driving the control member 1 to rotate, it can also guide the sliding of the locking member 3; there is a flat surface on the shaft rod 72, the hole for the shaft rod 72 to pass through the locking member 3 is circular, and the hole for the shaft rod 72 to pass through the control member 1 is provided with a corresponding flat surface, so that when the shaft rod 72 rotates, it rotates relative to the locking member 3, but can drive the control member 1 to rotate together; the end of the shaft rod 72 is inserted into the armrest frame 4 and then connected to the armrest frame 4 through a screw gasket assembly to realize the rotational connection between the shaft rod 72 and the armrest frame 4; an avoidance groove 52 is formed on the lifting seat 5, and the avoidance groove 52 extends in the height direction, and the shaft rod 72 enters the installation space 51 from the avoidance groove 52. A decorative cover 6 is also provided on the lifting seat 5, and the decorative cover 6 is located outside the armrest frame 4 and closes the installation space 51.
[0050] Such as Figure 3 、 4As shown, a number of gear slots 8 are provided on the lifting seats 5 on both sides of the locking part 2, and the multiple gear slots 8 are arranged in the height direction; an elastic gear member 12 is provided on the locking member 3; in the adjustment state, when the lifting seat 5 is pulled or pressed down, the elastic gear member 12 switches in different gear slots 8; and when switching from the locked state to the adjustment state, the elastic gear member 12 still remains in the gear slot 8; to prevent the lifting seat 5 from directly falling when switching to the adjustment state and causing pinching of the hand or other injuries to the user.
Claims
1. A method for adjusting the height of an armrest, characterized in that: The lifting seat of the armrest is slidably connected to the armrest frame, and a locking part, an elastic part, a locking part and a control part are arranged in sequence between the lifting seat and the armrest frame; The locking part is slidably arranged between the lifting seat and the armrest frame, the control part is rotationally matched with the locking part, and the locking part is always in contact with the control part under the action of the elastic part; a pushing part is preset on the control part, a groove is correspondingly preset on the locking part, and an abutting surface is preset beside the groove; When the pushing part is located in the groove, the armrest is in an adjustment state, and the lifting seat is pulled up or pressed down to adjust the height of the armrest; after the adjustment is completed, the control part is rotated in any direction until the pushing part leaves the groove and abuts against the abutting surface. At this time, the pushing part pushes the locking part to be locked and matched with the locking part, and the elastic part deforms accordingly, and the armrest enters the locked state; When the armrest is in the locked state, the control part is rotated in any direction until the pushing part returns to the groove, the elastic part recovers its deformation and pushes the locking part away from the locking part, so that the armrest switches back to the adjustment state.
2. The height adjustment method of the armrest according to claim 1, characterized in that: There are at least two pushing parts, and the multiple pushing parts are evenly and spaced along the circumferential direction of the control part; the number of grooves is the same as the number of pushing parts, and the multiple grooves are evenly and spaced along the circumferential direction of the locking part.
3. The method for adjusting the height of the armrest according to claim 1, characterized in that: The rotation of the control part drives the locking part to slide along the axial direction of the control part.
4. The height adjustment method of the armrest according to claim 3, characterized in that: The rotation axis of the control part is arranged along the sliding direction of the locking part, and the pushing part protrudes towards the locking part.
5. The height adjustment method of the armrest according to claim 4, characterized in that: The locking part slides in the left-right direction; two spaced and parallel sliding shafts are preset on the armrest frame, and the locking part is slidably arranged on the sliding shafts; the axis of the sliding shaft is arranged in the left-right direction.
6. The height adjustment method of the armrest according to claim 1, characterized in that: A receiving groove is preset on the locking part, the receiving groove is arranged towards the control part, and the groove is arranged in the receiving groove; in the adjustment state, the control part sinks into the receiving groove; in the locked state, the locking part slides away from the control part, and correspondingly, the control part protrudes backward from the receiving groove relative to the locking part.
7. The method for adjusting the height of the armrest according to claim 6, characterized in that: The control part is in a disc shape.
8. The height adjustment method of the armrest according to claim 1, characterized in that: A rotatable operating part is preset on the armrest frame. The operating part includes a shaft rod. The shaft rod passes through the elastic part, the locking part and the control part; the shaft rod is rotated, and the shaft rod rotates relative to the elastic part and the locking part and drives the control part to rotate together.
9. The method for adjusting the height of the armrest according to claim 8, wherein: The operating part further includes a knob, and the knob is synchronously rotated with the shaft rod. The knob is for the user to rotate to switch the state of the armrest.
10. The height adjustment method of the armrest according to claim 1, characterized in that: A first set of teeth is provided on the end surface of the locking part close to the locking part, and a plurality of second set of teeth are provided on the locking part. The plurality of second set of teeth are distributed perpendicular to the sliding direction of the locking part; when the pushing part pushes the locking part to slide forward, the first set of teeth meshes with the second set of teeth, and the locking part is locked and matched with the locking part.
11. The method for adjusting the height of the armrest according to claim 10, characterized in that: A plurality of the first set of teeth are provided on the locking part, and the plurality of first set of teeth are distributed perpendicular to the sliding direction of the locking part.
12. The method for adjusting the height of the armrest according to claim 11, characterized in that: Two rows of first set of teeth are spaced on the locking part, and two rows of second set of teeth are correspondingly spaced on the locking part. A first avoidance space is formed between the two rows of first set of teeth, and a second avoidance space is formed between the two rows of second set of teeth. The elastic part is arranged in the first avoidance space and the second avoidance space.
13. The height adjustment method of the armrest according to claim 1, characterized in that: The elastic part is a spring piece or a spring.
14. The height adjustment method of the armrest according to claim 1, characterized in that: The pushing part has two first inclined surfaces, which are respectively located on both sides of the pushing part along the rotation direction of the control part; the groove has two second inclined surfaces that cooperate with the first inclined surfaces, and the abutting surface is connected to the second inclined surface; when the pushing part is in the groove, rotate the pushing part, and after the pushing part passes through the second inclined surface, it abuts against the abutting surface.
15. The method for adjusting the height of the armrest according to claim 14, characterized in that: When the pushing part rotates to the position where the first inclined surface cooperates with the second inclined surface at the abutting surface, the elastic force given by the elastic part to the locking part will cause the pushing part to enter the groove.
16. The method for adjusting the height of the armrest according to claim 1, wherein: The height from the top to the bottom of the pushing part is the pushing height; in the adjustment state, the locking part and the locking member are separated from each other under the action of the elastic part and have a spacing, and the pushing height is not less than this spacing.
17. The method for adjusting the height of the armrest according to claim 1, wherein: The locking part is fixedly arranged on the lifting seat along the height direction and is integrally formed with the lifting seat, and the locking member is slidably arranged on the armrest frame.
18. The height adjustment method of the armrest according to claim 17, characterized in that: A number of gear slots are formed in the lifting seats on both sides of the locking part, and the multiple gear slots are arranged along the height direction; an elastic gear member is provided on the locking member; in the adjustment state, when the lifting seat is pulled or pressed down, the elastic gear member switches in different gear slots; and when switching from the locking state to the adjustment state, the elastic gear member still remains in the gear slot.