Multi-degree-of-freedom adjustable seat armrest frame and use method thereof

Abstract

The invention discloses a multi-degree-of-freedom adjustable seat armrest frame. The multi-degree-of-freedom adjustable seat armrest frame comprises an adjusting mechanism, an armrest mechanism and a handle mechanism which are mounted on a mounting plate at the lower part of a cutting vehicle seat, the adjusting mechanisms are arranged on the front side and the rear side of the mounting plate respectively and can swing on the mounting plate. The armrest mechanism comprises an armrest assembly and a sliding assembly; the handrail assembly is arranged on the top face of the adjusting mechanism through the sliding assembly and can slide on the adjusting mechanism. The handle mechanism is connected with the armrest mechanism, and the handle mechanism can swing on the armrest mechanism. The invention further discloses a using method of the device. Free adjustment can be carried out according to the actual body shape and driving habits of a driver, better driving and operation comfort can be provided for the driver, the degree of freedom of adjustment is high, use is convenient, and the application range is wide.

Description

Technical Field

[0001] The invention belongs to the technical field of logging equipment, and in particular relates to a chair armrest frame capable of being adjusted with multiple degrees of freedom and a use method thereof. Background Art

[0002] When a forestry harvester is performing logging operations in forests with complex terrain and harsh working conditions, the cab will shake left and right with the frame. The harvester has no steering wheel, and the driver controls the vehicle using the joystick on the seat. Since the harvester has no steering wheel, the seat armrests can only be used to support and stabilize the driver's arms to ensure that the driver can work safely and comfortably.

[0003] like Figure 14 As shown in the figure, it is a schematic diagram of a logging vehicle seat in the prior art. The existing seat armrest is fixed to the seat back, and the fixing point is on the backrest. The extended length is too long, resulting in the armrest being not strong enough and unable to provide sufficiently stable support for the driver's arm. Moreover, the armrest is installed together with the backrest. When the seat backrest angle is adjusted, the horizontal angle of the armrest will also change. Although the existing armrest can be adjusted to a certain angle, the adjustable freedom is still small and cannot be further adjusted according to the driver's actual body shape and driving habits. It is also inconvenient to install the handle box. Summary of the Invention

[0004] The object of the present invention is to provide a chair armrest frame that can be adjusted with multiple degrees of freedom to solve the technical problems raised in the above background technology. In order to achieve the above object, the present invention adopts the following technical solutions: A seat armrest frame that can be adjusted with multiple degrees of freedom includes an adjustment mechanism, an armrest mechanism, and a handle mechanism installed on a mounting plate at the bottom of a harvester vehicle seat. The adjustment mechanism is respectively arranged on the front and rear sides of the mounting plate, and the adjustment mechanism can swing on the mounting plate; the armrest mechanism includes an armrest assembly and a sliding assembly; the armrest assembly is arranged on the top surface of the adjustment mechanism through the sliding assembly and can slide on the adjustment mechanism; the handle mechanism is connected to the armrest mechanism, and the handle mechanism can swing on the armrest mechanism.

[0005] Furthermore, the adjustment mechanism includes a support rod, a lower swing assembly, and an upper swing assembly; the lower swing assembly includes a first lower pressure plate, a second lower pressure plate, a lower ball head, and a lower ratchet hand-tightening bolt; the first lower pressure plate is located below the second lower pressure plate, and the first and second lower pressure plates are connected to the mounting plate on the right side and are connected to each other on the left side through the lower ratchet hand-tightening bolt, and a vertical through hole is opened in the middle of the first and second lower pressure plates; a circular arc chamfer is provided in the through hole; the lower ball head is arranged inside the first and second lower pressure plates; the support rod is vertically arranged, and its lower end passes through the lower ball head and extends out of the bottom surface of the mounting plate.

[0006] Furthermore, the upper swing assembly includes a first upper pressure plate, a second upper pressure plate, an upper ball head, and an upper ratchet hand-tightening bolt; a vertical through-hole is opened in the middle of the first upper pressure plate and the second upper pressure plate; a circular arc chamfer is provided in the through-hole; the upper ball head is fixed to the top of the support rod; the first upper pressure plate is mounted on the support rod through its through-hole and is located below the upper ball head; the second upper pressure plate is located above the upper ball head, and the left sides of the first upper pressure plate and the second upper pressure plate are connected to each other through the upper ratchet hand-tightening bolt.

[0007] Furthermore, a horizontally penetrating socket is provided at the bottom of the support rod; a bayonet is also provided; and the bayonet passes through the socket and is connected to the support rod.

[0008] Furthermore, it also includes a ferrule and a dustproof sleeve; the ferrules are respectively arranged on the top surface of the through hole of the second lower pressure plate and the bottom surface of the through hole of the first upper pressure plate; the dustproof sleeve is arranged on the support rod, and its two ends are respectively connected to the ferrule.

[0009] Furthermore, it also includes a compression spring; the compression spring is sleeved on the support rod and located in the dust cover.

[0010] Furthermore, the armrest assembly includes a lower shell, a bracket, a main shell, an upper shell, and a rubber pad; the lower shell is horizontally arranged, a through groove is provided on the bottom surface of the lower shell, and an opening is provided at the right end; the bracket is fixed in the lower shell, and vertical channels are provided on the left and right sides of the middle part; the main shell is connected to the top surface of the lower shell; the upper shell is connected to the top surface of the main shell; the rubber pad is provided on the top surface of the upper shell; the sliding assembly includes a slide rail and a slider; the slider is provided in the channel of the bracket, and its bottom passes through the through groove on the bottom surface of the lower shell, and is fixedly connected to the top surface of the second upper pressure plate; the slide rail is horizontally arranged on the left and right, and is spaced front and back on the front and rear sides of the top of the bracket, and the slide rail is slidably connected to the upper part of the slider.

[0011] Furthermore, the front and rear side walls of the slider are provided with a plurality of fixing holes spaced apart on the left and right sides; the bracket and the side walls of the lower shell are provided with insertion holes at positions corresponding to the fixing holes; and a locking screw is also included; the locking screw passes through the insertion holes of the bracket and the lower shell and is connected to the fixing hole.

[0012] Further, the handle mechanism comprises a handle body, a connecting rod, a handle ball head, a handle ball head pressing plate, a handle ratchet hand screw bolt; the connecting rod is horizontally arranged, one end of the connecting rod is fixedly connected with the handle body, and the other end of the connecting rod is fixedly connected with the handle ball head; a through light hole is formed in the side wall of the handle ball head; the handle ball head pressing plate is fixedly arranged at the right end of the bracket, and two handle ball head pressing plates are arranged at intervals in front and back; a first threaded connection hole is formed in the side wall of the handle ball head pressing plate; the handle ratchet hand screw bolt passes through the first threaded connection hole and the light hole in sequence, so that the two handle ball head pressing plates press the handle ball head, and the handle ball head is connected between the two handle ball head pressing plates.

[0013] A use method of a seat armrest frame with multiple degrees of freedom adjustment, comprising: (1) Multi-angle adjustment of the armrest frame: loosen the lower ratchet hand screw bolt, so that the first lower pressing plate and the second lower pressing plate no longer press the lower ball head; at this time, swing the handle mechanism forward, backward, towards the seat or away from the seat, so that the supporting rod moves in the corresponding direction based on the lower ball head between the first lower pressing plate and the second lower pressing plate, thereby adjusting the position of the entire armrest frame; after adjustment, tighten the lower ratchet hand screw bolt, so that the first lower pressing plate and the second lower pressing plate press the lower ball head, thereby fixing the entire armrest frame; after adjusting the position of the armrest frame, loosen the upper ratchet hand screw bolt, so that the first upper pressing plate and the second upper pressing plate no longer press the upper ball head; at this time, swing the handle mechanism in any direction and angle based on the upper ball head between the first upper pressing plate and the second upper pressing plate, thereby adjusting the position of the handle mechanism; after adjustment, tighten the upper ratchet hand screw bolt, so that the first upper pressing plate and the second upper pressing plate press the upper ball head, thereby fixing the handle mechanism; (2) Front and back adjustment of the handle mechanism: loosen the locking screw, so that it is no longer connected with the fixed hole of the sliding block; then push the handle mechanism forward or backward, so that the handle assembly moves based on the sliding block through the sliding rail, thereby adjusting the position of the handle assembly; after adjustment, tighten the locking screw, thereby fixing the handle assembly; (3) Handle position adjustment: loosen the handle ratchet hand screw bolt, so that the handle ball head pressing plate no longer presses the handle ball head; at this time, swing the handle body up and down, thereby adjusting the position of the handle body; after adjustment, tighten the handle ratchet hand screw bolt, so that the handle ball head pressing plate presses the handle ball head, thereby fixing the handle body.

[0014] As described above, due to the adoption of the above technical solutions, the present application has the following beneficial effects: 1. The present application adjusts the position of the whole armrest frame by setting the adjusting mechanism, swinging the whole armrest frame on the seat by the lower swing assembly, swinging the armrest mechanism by the upper swing assembly, and adjusting the angle of the armrest, thereby freely adjusting the actual size and driving habit of the driver, providing better driving and operating comfort for the driver, having high adjustment freedom, being convenient to use, having wide application range, and not changing according to the angle change of the seat back.

[0015] 2. In the armrest mechanism of the present application, the armrest assembly can be moved on the adjusting mechanism by setting the sliding assembly, thereby adjusting the length of the driver's arm and further improving comfort and application range.

[0016] 3. The armrest mechanism and handle mechanism of the present application are connected by the handle ball head, handle ball head pressing plate and handle ratchet hand screw bolt, so that the handle body can be conveniently integrated into the armrest frame, and the handle angle can be conveniently adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a connection structure schematic diagram of the present application; Figure 2 is another perspective connection structure schematic diagram of the present application; Figure 3 is a structure schematic diagram of the present application; Figure 4 is a connection mechanism schematic diagram of the adjusting mechanism, armrest mechanism and handle mechanism of the present application.

[0018] Figure 5 is an explosion view of the adjusting mechanism of the present application; Figure 6 is a structure schematic diagram of the lower ball head of the present application; Figure 7 is a structure schematic diagram of the circular arc chamfer of the present application; Figure 8 is a sectional view of the adjusting mechanism of the present application; Figure 9 is a structure schematic diagram of the armrest mechanism of the present application; Figure 10 is a structure schematic diagram of the handle mechanism of the present application; Figure 11 is a schematic diagram of the adjusting form of the armrest frame of the present application; Figure 12 is a schematic diagram of the adjusting form of the armrest mechanism of the present application; Figure 13 is a schematic diagram of the adjusting form of the handle mechanism of the present application; Figure 14 is an installation schematic diagram of the prior art armrest frame.

[0019] In the drawings, 1 - adjusting mechanism; 11 - support rod; 111 - clamping hole; 12 - lower swing assembly; 121 - first lower pressing plate; 122 - second lower pressing plate; 123 - lower ball head; 124 - lower ratchet hand bolt; 13 - upper swing assembly; 131 - first upper pressing plate; 132 - second upper pressing plate; 133 - upper ball head; 134 - upper ratchet hand bolt; 14 - arc chamfer; 15 - clamping pin; 16 - clamping sleeve; 17 - dustproof sleeve; 18 - compression spring; 2 - armrest mechanism; 21 - armrest assembly; 211 - lower shell; 2111 - opening; 2112 - first insertion hole; 2113 - second threaded connection hole; 212 - bracket; 2121 - channel; 2122 - second insertion hole; 213 - main shell; 214 - upper shell; 215 - rubber pad; 22 - sliding assembly; 221 - sliding rail; 222 - sliding block; 2221 - fixing hole; 223 - locking screw; 3 - handle mechanism; 31 - handle body; 32 - connecting rod; 33 - handle ball head; 331 - light hole; 34 - handle ball head pressing plate; 341 - first threaded connection hole; 35 - handle ratchet hand bolt; 4 - mounting plate. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below with reference to the drawings and preferred embodiments. However, it should be noted that many details in the description are only for the reader to have a thorough understanding of one or more aspects of the present application, and the aspects of the present application can be realized without these specific details.

[0021] As Figures 1-13 shown, a multi-degree-of-freedom adjustable seat armrest frame includes an adjusting mechanism 1 mounted on a mounting plate 4 of a logging truck seat, an armrest mechanism 2, and a handle mechanism 3. The mounting plate 4 is pre-assembled on the logging truck seat. The adjusting mechanism 1 is arranged on the front and rear sides of the mounting plate 4, respectively, and can swing on the mounting plate 4. The armrest mechanism 2 includes an armrest assembly 21 and a sliding assembly 22. The armrest assembly 21 is arranged on the top surface of the adjusting mechanism 1 through the sliding assembly 22 and can slide on the adjusting mechanism 1. The handle mechanism 3 is connected with the armrest mechanism 2, and the handle mechanism 3 can swing on the armrest mechanism 2.

[0022] The adjusting mechanism 1 comprises a support rod 11, a lower swing assembly 12, and an upper swing assembly 13; the lower swing assembly 12 comprises a first lower pressing plate 121, a second lower pressing plate 122, a lower ball head 123, and a lower ratchet hand bolt 124; the first lower pressing plate 121 is located below the second lower pressing plate 122, the right sides of the first lower pressing plate 121 and the second lower pressing plate 122 are connected with the mounting plate 4 through screws, the left sides of the first lower pressing plate 121 and the second lower pressing plate 122 are connected with each other through the lower ratchet hand bolt 124, vertical through holes are formed in the middle portions of the first lower pressing plate 121 and the second lower pressing plate 122; a circular arc chamfer 14 is arranged in the through hole, the radius of the circular arc chamfer 14 is equal to the radius of the lower ball head 123; the lower ball head 123 is arranged in the first lower pressing plate 121 and the second lower pressing plate 122 through the circular arc chamfer 14 of the first lower pressing plate 121 and the second lower pressing plate 122; the support rod 11 is vertically arranged, the lower portion of the support rod 11 penetrates the middle portion of the lower ball head 123 and is connected with the lower ball head 123, and the lower end of the support rod 11 penetrates and extends out of the bottom surface of the mounting plate 4. The lower ball head 123 is connected in the circular arc chamfer 14 of the first lower pressing plate 121 and the second lower pressing plate 122, because the radius of the circular arc chamfer 14 is equal to the radius of the lower ball head 123, when the first lower pressing plate 121 and the second lower pressing plate 122 do not press the lower ball head 123, the lower ball head 123 can rotate freely in the circular arc chamfer 14, so that the support rod 11 can swing freely in the first lower pressing plate 121 and the second lower pressing plate 122 based on the lower ball head 123, and when the first lower pressing plate 121 and the second lower pressing plate 122 press the lower ball head 123, the circular arc chamfer 14 can press and lock the lower ball head 123, and then the support rod 11 is fixed.

[0023] In a further embodiment, the top surfaces of the first lower pressing plate 121 and the second lower pressing plate 122 are provided with threaded holes on the left and right sides, the top surface of the mounting plate 4 is also provided with corresponding threaded holes corresponding to the right side positions of the top surfaces of the first lower pressing plate 121 and the second lower pressing plate 122, the first lower pressing plate 121 and the second lower pressing plate 122 are connected with the mounting plate 4 by screwing screws into the threaded holes on the right sides of the first lower pressing plate 121 and the second lower pressing plate 122 and the threaded holes of the mounting plate 4 in sequence, and the first lower pressing plate 121 and the second lower pressing plate 122 are connected with each other by screwing the lower ratchet hand bolt 124 into the threaded holes on the left sides of the first lower pressing plate 121 and the second lower pressing plate 122 in sequence.

[0024] In a further embodiment, the lower ball head 123 is a circular ring ball body made of spring manganese steel, a notch is formed in the side surface of the lower ball head 123, and the support rod 11 penetrates the lower ball head 123 and is connected with the lower ball head 123, when the first lower pressing plate 121 and the second lower pressing plate 122 press the lower ball head 123, the lower ball head 123 is deformed by extrusion, so as to firmly clamp the support rod 11.

[0025] The upper swing assembly 13 comprises a first upper pressing plate 131, a second upper pressing plate 132, an upper ball head 133, and an upper ratchet hand screw bolt 134; the first upper pressing plate 131 and the second upper pressing plate 132 are provided with vertical through holes in the middle; the through holes are provided with a circular arc chamfer 14; the upper ball head 133 is fixedly arranged at the top end of the support rod 11; the first upper pressing plate 131 is sleeved on the support rod 11 through the through hole thereof and is located below the upper ball head 133; the second upper pressing plate 132 is located above the upper ball head 133, and the first upper pressing plate 131 and the second upper pressing plate 132 are connected to each other through the upper ratchet hand screw bolt 134 on the left side. The upper ball head 133 is connected in the circular arc chamfer 14 of the first upper pressing plate 131 and the second upper pressing plate 132, the radius of the circular arc chamfer 14 of the first upper pressing plate 131 and the second upper pressing plate 132 is equal to the radius of the upper ball head 133, and when the first upper pressing plate 131 and the second upper pressing plate 132 are not pressed against the upper ball head 133, the upper ball head 133 can rotate freely in the circular arc chamfer 14, that is, the first upper pressing plate 131 and the second upper pressing plate 132 can rotate based on the upper ball head 133, so that the hand supporting structure 2 can swing based on the upper ball head 133 through the first upper pressing plate 131 and the second upper pressing plate 132, and the position of the hand supporting structure 2 is adjusted.

[0026] In further embodiments, the first upper pressing plate 131 and the second upper pressing plate 132 are provided with threaded holes on the left and right sides, the first upper pressing plate 131 and the second upper pressing plate 132 are connected to each other through screws on the right side, and the first upper pressing plate 131 and the second upper pressing plate 132 are connected to each other through the upper ratchet hand screw bolt 134 on the left side.

[0027] The bottom of the support rod 11 is provided with a horizontal through clamping hole 111 on the side wall below the mounting plate 4; and a clamping pin 15 is further included; the clamping pin 15 is connected with the support rod 11 through the clamping hole 111. The clamping pin 15 limits the support rod 11, preventing the support rod 11 from being pulled out upward.

[0028] In further embodiments, the clamping pin 15 is a glass bead clamping pin, preventing the clamping pin 15 from being pulled out of the clamping hole 111 and improving stability.

[0029] A clamping sleeve 16 and a dustproof sleeve 17 are further included; the clamping sleeve 16 is arranged on the top surface of the through hole of the second lower pressing plate 122 and the bottom surface of the through hole of the first upper pressing plate 131 respectively; and the dustproof sleeve 17 is sleeved on the support rod 11 and connected with the clamping sleeve 16 at both ends.

[0030] In further embodiments, the clamping sleeve 16 is trumpet-shaped, and the two clamping sleeves 16 are opposite to each other at the ends with larger diameters; the dustproof sleeve 17 is connected by being clamped on the clamping sleeve 16 at both ends, without the need for other connection structures, which is convenient for disassembly and assembly and more beautiful.

[0031] Also includes a compression spring 18; the compression spring 18 is sleeved on the support rod 11 and located in the dust cover 17. The compression spring 18 is used to balance the weight of the upper part of the handrail frame, so that the whole handrail frame will not fall down when the ratchet knob is loosened.

[0032] The handrail assembly 21 includes a lower shell 211, a bracket 212, a main shell 213, an upper shell 214, and a rubber pad 215. The lower shell 211 is horizontally arranged, and a through slot (not shown in the figure) is formed in the bottom surface of the lower shell 211. An opening 2111 is formed in the right end of the lower shell 211. The bracket 212 is fixedly arranged in the lower shell 211, and vertical passages 2121 are formed in the left and right sides of the bracket 212. The main shell 213 is connected to the top surface of the lower shell 211, and a button panel is arranged on the main shell 213. The upper shell 214 is connected to the top surface of the main shell 213. The rubber pad 215 is arranged on the top surface of the upper shell 214 and is used to support the driver's arm. The sliding assembly 22 includes a sliding rail 221 and a sliding block 222. The sliding block 222 is arranged in the passage 2121 of the bracket 212, and the bottom of the sliding block 222 passes through the through slot in the bottom surface of the lower shell 211. The sliding block 222 is fixedly connected to the top surface of the second upper pressing plate 132 by screws. The sliding rail 221 is horizontally arranged and is spaced apart from the top surface of the bracket 212 on the front and rear sides. The sliding rail 221 is slidably connected to the upper part of the sliding block 222. When the handrail assembly 21 is moved, the handrail assembly 21 can be moved on the sliding block 222 through the sliding rail 221, so as to adjust the front and rear positions of the handrail assembly 21.

[0033] The side wall of the sliding block 222 is provided with a plurality of fixed holes 2221 arranged at intervals. The side wall of the lower shell 211 is provided with a first insertion hole 2112 corresponding to the position of the side wall of the sliding block 222. The side wall of the bracket 212 is provided with a second insertion hole 2122 corresponding to the position of the first insertion hole 2112. The locking screw 223 is further included. The locking screw 223 is connected to the fixed hole 2221 through the first insertion hole 2112 of the lower shell 211 and the second insertion hole 2122 of the bracket 212. When the locking screw 223 is loosened, the handrail assembly 21 can be moved forward and backward. When the locking screw 223 is tightened, the locking screw 223 is inserted into the fixed hole 2221 of the sliding block 222. At this time, the handrail assembly 21 is connected to the sliding block 222, so that the position of the handrail assembly 21 is fixed.

[0034] The handle mechanism 3 comprises a handle body 31, a connecting rod 32, a handle ball head 33, a handle ball head pressing plate 34, and a handle ratchet hand screw bolt 35; the connecting rod 32 is horizontally arranged, one end of which is fixedly connected with the handle body 31, and the other end of which is fixedly connected with the handle ball head 33; the side wall of the handle ball head 33 is provided with a through light hole 331; the handle ball head pressing plate 34 is fixedly arranged at the right end of the bracket 212 and is provided with two handle ball head pressing plates 34 spaced apart in front and back, and the side wall of the handle ball head pressing plate 34 is provided with a first threaded connection hole 341; the side wall of the lower shell 211 is provided with a second threaded connection hole 2113 corresponding to the first threaded connection hole 341; the handle ratchet hand screw bolt 35 passes through the second threaded connection hole 2113, the rear first threaded connection hole 341, the light hole 331, and the front first threaded connection hole 341 in sequence, so that the two handle ball head pressing plates 34 press the handle ball head 33 tightly, and the handle ball head 33 is connected between the two handle ball head pressing plates 34. When the handle ratchet hand screw bolt 35 is loosened, the handle ball head pressing plate 34 releases the handle ball head 33, at this time, the handle body 31 can be swung up and down based on the handle ball head 33 to adjust the position of the handle body 31.

[0035] A use method of a seat armrest frame with multiple degrees of freedom adjustment, comprising: (1) Armrest frame multi-angle adjustment: loosen the lower ratchet hand screw bolt 124, so that the first lower pressing plate 121 and the second lower pressing plate 122 no longer press the lower ball head 123, at this time, swing the handle mechanism 2 forward, backward, towards the seat direction or away from the seat direction, so that the supporting rod 11 swings based on the lower ball head 123 in the first lower pressing plate 121 and the second lower pressing plate 122 in the corresponding direction, that is, the position of the entire armrest frame can be adjusted, and after adjustment is completed, tighten the lower ratchet hand screw bolt 124, so that the first lower pressing plate 121 and the second lower pressing plate 122 press the lower ball head 123, that is, the entire armrest frame can be fixed; after adjusting the position of the armrest frame, the upper ratchet hand screw bolt 134 can be loosened, so that the first upper pressing plate 131 and the second upper pressing plate 132 no longer press the upper ball head 133, at this time, the handle mechanism 2 can be swung in any direction and angle based on the upper ball head 133 through the first upper pressing plate 131 and the second upper pressing plate 132, so as to adjust the position of the handle mechanism 2, and after adjustment is completed, tighten the upper ratchet hand screw bolt 134 to press the first upper pressing plate 131 and the second upper pressing plate 132 to the upper ball head 133, that is, the handle mechanism 2 can be fixed.

[0036] (2) Handle mechanism forward and backward adjustment: loosen the locking screw 223, so that it is no longer connected with the fixed hole 2221 of the sliding block 222, and then push the handle mechanism 2 forward or backward, so that the handle assembly 21 moves based on the sliding block 222 through the sliding rail 221, so as to adjust the position of the handle assembly 21, and after adjustment is completed, tighten the locking screw 223, that is, the handle assembly 21 can be fixed.

[0037] (3) Handle position adjustment: unscrew the handle ratchet hand screw 35, so that the handle ball head pressing plate 34 no longer press the handle ball head 33, at this time can swing the handle body 31 up and down, so as to adjust the position of the handle body 31, after the adjustment is completed, tighten the handle ratchet hand screw 35, so that the handle ball head pressing plate 34 press the handle ball head 33, that is, the handle body 31 can be fixed.

[0038] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make some improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A multi-degree-of-freedom adjustable seat armrest, comprising an adjustment mechanism, an armrest mechanism, and a handle mechanism mounted on a mounting plate below a harvester seat, characterized in that: The adjustment mechanism is respectively arranged on the front and rear sides of the mounting plate, and the adjustment mechanism can swing on the mounting plate; the armrest mechanism includes an armrest assembly and a sliding assembly; the armrest assembly is arranged on the top surface of the adjustment mechanism through the sliding assembly and can slide on the adjustment mechanism; the handle mechanism is connected to the armrest mechanism, and the handle mechanism can swing on the armrest mechanism.

2. The multi-degree-of-freedom adjustable chair armrest according to claim 1, characterized in that: The adjusting mechanism includes a support rod, a lower swing assembly, and an upper swing assembly; the lower swing assembly includes a first lower pressure plate, a second lower pressure plate, a lower ball head, and a lower ratchet hand-tightening bolt; the first lower pressure plate is located below the second lower pressure plate, and the first and second lower pressure plates are connected to the mounting plate on the right side and are connected to each other on the left side through the lower ratchet hand-tightening bolt, and a vertical through hole is provided in the middle of the first and second lower pressure plates; a circular arc chamfer is provided in the through hole; the lower ball head is provided inside the first and second lower pressure plates; the support rod is vertically arranged, and its lower end passes through the lower ball head and extends out of the bottom surface of the mounting plate.

3. The multi-degree-of-freedom adjustable chair armrest according to claim 2, characterized in that: The upper swing assembly includes a first upper pressure plate, a second upper pressure plate, an upper ball head, and an upper ratchet hand-tightening bolt; a vertical through-hole is opened in the middle of the first upper pressure plate and the second upper pressure plate; a circular arc chamfer is provided in the through-hole; the upper ball head is fixedly arranged at the top end of the support rod; the first upper pressure plate is sleeved on the support rod through its through-hole and is located below the upper ball head; the second upper pressure plate is located above the upper ball head, and the left sides of the first upper pressure plate and the second upper pressure plate are connected to each other by the upper ratchet hand-tightening bolt.

4. The multi-degree-of-freedom adjustable chair armrest according to claim 2, characterized in that: The bottom of the support rod is provided with a horizontal through-hole; a bayonet is also provided; the bayonet passes through the bayonet and is connected to the support rod.

5. The multi-degree-of-freedom adjustable chair armrest according to claim 3, characterized in that: It also includes a ferrule and a dustproof sleeve; the ferrules are respectively arranged on the top surface of the through hole of the second lower pressure plate and the bottom surface of the through hole of the first upper pressure plate; the dustproof sleeve is arranged on the support rod, and its two ends are respectively connected to the ferrule.

6. The multi-degree-of-freedom adjustable chair armrest according to claim 5, characterized in that: It also includes a compression spring; the compression spring is sleeved on the support rod and located in the dust cover.

7. The multi-degree-of-freedom adjustable chair armrest according to claim 3, characterized in that: The armrest assembly includes a lower shell, a bracket, a main shell, an upper shell, and a rubber pad; the lower shell is horizontally arranged, a through groove is provided on the bottom surface of the lower shell, and an opening is provided at the right end; the bracket is fixed in the lower shell, and vertical channels are provided on the left and right sides of the middle part; the main shell is connected to the top surface of the lower shell; the upper shell is connected to the top surface of the main shell; the rubber pad is provided on the top surface of the upper shell; the sliding assembly includes a slide rail and a slider; the slider is provided in the channel of the bracket, and its bottom passes through the through groove on the bottom surface of the lower shell, and is fixedly connected to the top surface of the second upper pressure plate; the slide rail is horizontally arranged on the left and right, and is spaced front and back on the front and rear sides of the top of the bracket, and the slide rail is slidably connected to the upper part of the slider.

8. The multi-degree-of-freedom adjustable chair armrest according to claim 7, characterized in that: The front and rear side walls of the slider are provided with a plurality of fixing holes spaced apart from each other; the bracket and the side walls of the lower shell are provided with insertion holes at positions corresponding to the fixing holes; and a locking screw is also included; the locking screw passes through the insertion holes of the bracket and the lower shell and is connected to the fixing hole.

9. The multi-degree-of-freedom adjustable chair armrest according to claim 7, characterized in that: The handle mechanism includes a handle body, a connecting rod, a handle ball head, a handle ball head pressure plate, and a handle ratchet hand-tightening bolt; the connecting rod is arranged horizontally, one end of which is fixedly connected to the handle body, and the other end is fixedly connected to the handle ball head; a through light hole is provided on the side wall of the handle ball head; the handle ball head pressure plate is fixedly arranged at the right end of the bracket, and two are spaced apart in front and back, and a first threaded connection hole is provided on the side wall of the handle ball head pressure plate; the handle ratchet hand-tightening bolt passes through the first threaded connection hole and the light hole in sequence, so that the two handle ball head pressure plates press the handle ball head tightly, and the handle ball head is connected between the two handle ball head pressure plates.

10. The method for using a multi-degree-of-freedom adjustable chair armrest according to any one of claims 1 to 9, characterized in that: include: (1) Multi-angle adjustment of the armrest frame: Loosen the lower ratchet hand-tightening bolt so that the first lower pressure plate and the second lower pressure plate no longer press the lower ball head. At this time, by swinging the armrest mechanism forward, backward, toward the seat or away from the seat, the support rod moves in the corresponding direction based on the lower ball head on the first lower pressure plate and the second lower pressure plate, and the position of the entire armrest frame can be adjusted. After the adjustment is completed, tighten the lower ratchet hand-tightening bolt so that the first lower pressure plate and the second lower pressure plate press the lower ball head, and the entire armrest frame can be fixed. After adjusting the position of the armrest frame, loosen the upper ratchet hand-tightening bolt so that the first upper pressure plate and the second upper pressure plate no longer press the upper ball head. At this time, the armrest mechanism can be swung in any direction and angle based on the first upper pressure plate and the second upper pressure plate based on the upper ball head, thereby adjusting the position of the armrest mechanism. After the adjustment is completed, tighten the upper ratchet hand-tightening bolt so that the first upper pressure plate and the second upper pressure plate press the upper ball head, and the armrest mechanism can be fixed. (2) Adjust the armrest mechanism forward and backward: Loosen the locking screw so that it is no longer connected to the fixing hole of the slider, then push the armrest mechanism forward or backward to move the armrest assembly based on the slider through the slide rail, thereby adjusting the position of the armrest assembly. After the adjustment is completed, tighten the locking screw to fix the armrest assembly; (3) Adjustment of handle position: Loosen the handle ratchet hand-tightening bolt so that the handle ball head pressure plate no longer presses the handle ball head. At this time, the handle body can be swung up and down to adjust the position of the handle body. After the adjustment is completed, tighten the handle ratchet hand-tightening bolt so that the handle ball head pressure plate presses the handle ball head to fix the handle body.

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