Cab seat

Abstract

The utility model provides a cab seat which is characterized in that the cab seat comprises a seat body and a rotating mechanism, a base is arranged at the bottom of the seat body, and the seat body is fixed in a cab through the base; the rotating mechanism is arranged between the seat body and the base and used for controlling the seat body to rotate, the rotating mechanism comprises a first fixing plate, a second fixing plate, a positioning disc fixed to the second fixing plate and an adjusting handle arranged on the first fixing plate, and a plurality of positioning grooves are formed in the edge of the positioning disc; a limiting shaft clamped in the positioning groove is arranged at one end of the adjusting handle; the first fixing plate is rotationally arranged relative to the second fixing plate, the positioning disc is arranged above the first fixing plate, the adjusting handle is controlled to enable the limiting shaft to retreat from the positioning groove, and after the seat body rotates to a designated position, the adjusting handle is controlled to enable the limiting shaft to be clamped into the corresponding positioning groove, so that the seat body is locked. A driver can adjust the rotation angle of the seat, so that the driver is in the best rest posture in a cab.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery seats, in particular to a cab seat. Background Art

[0002] In the prior art, the seats in the cab of agricultural walking machinery generally only provide a single seating function, and most of them do not have a rotation function. Even if they have this function, the rotation angle is greatly limited, and the structure of the rotation mechanism itself is relatively complicated, and the firmness and rotation smoothness are not ideal, which makes the driver's operation and experience poor. In addition, the space in the cab itself is limited, and the driver often needs to rotate the seat and adjust it to a comfortable position to rest in order to achieve a comfortable resting state.

[0003] Therefore, it is necessary to provide a kind of cab seat to overcome the above-mentioned defectives. Utility Model Content

[0004] The utility model aims to provide a cab seat.

[0005] According to one aspect of the utility model, there is provided a cab seat, characterized in that it comprises:

[0006] Seat body,

[0007] A base, the base being arranged at the bottom of the seat body, and the seat body being fixed in the cab through the base;

[0008] A rotating mechanism, the rotating mechanism is arranged between the seat body and the base and is used to control the rotation of the seat body, the rotating mechanism includes a first fixing plate for fixing the seat body, a second fixing plate fixed to the base, a positioning plate fixed to the second fixing plate, and an adjustment handle arranged on the first fixing plate, a plurality of positioning grooves are arranged on the edge of the positioning plate, and one end of the adjustment handle is provided with a limiting shaft for being clamped in the positioning groove;

[0009] The first fixing plate is rotatably arranged relative to the second fixing plate, and the positioning plate is arranged above the first fixing plate. The adjusting handle is controlled to make the limiting shaft exit the positioning groove. When the seat body is rotated to the specified position, the adjusting handle is controlled to make the limiting shaft fit into the corresponding positioning groove to lock the seat body.

[0010] Preferably, a boss is provided in the middle of the second fixing plate, a through hole is provided in the middle of the first fixing plate for the boss to pass through, a bearing is provided in the through hole, and the bearing sleeve is arranged on the boss and located between the boss and the first fixing plate.

[0011] Preferably, a second annular groove coaxially arranged with the through opening is formed on the upper surface of the second fixing plate, the cross section of the second annular groove is arc-shaped, and a plurality of balls of the same size are arranged in the second annular groove.

[0012] Preferably, a first annular groove is provided on the lower surface of the first fixing plate, the first annular groove and the second annular groove are arranged correspondingly and have the same structure, the ball is located between the first annular groove and the second annular groove, the lower part of the ball is in contact with the inner surface of the second annular groove, the upper part of the ball is in contact with the inner surface of the first annular groove, and a gap is provided between the first fixing plate and the second fixing plate.

[0013] Preferably, the positioning plate is fixed on the top of the boss, and a plurality of positioning grooves are evenly spaced within a 90° angle range on the outer edge of the positioning plate.

[0014] Preferably, the positioning plate is fixed to the boss via a cover plate, the cover plate is fixed to the top of the boss, a first avoidance opening is provided in the middle of the positioning plate, a plurality of mutually corresponding through holes are provided on the cover plate and the positioning plate, the through holes are located on the peripheral side of the first avoidance opening, and the positioning plate is fixed to the bottom of the cover plate by bolts passing through the corresponding through holes.

[0015] Preferably, a partition is fixed below the positioning plate, a second avoidance opening is provided in the middle of the partition, a diameter of the second avoidance opening is the same as that of the first avoidance opening, and the second avoidance opening, the first avoidance opening and the cover plate constitute an accommodating space for accommodating the bearing.

[0016] Preferably, the adjustment handle includes an adjustment rod, a handle portion located at the outer end of the adjustment rod, and a limiting portion located at the other end of the adjustment rod, the limiting portion includes the vertically arranged limiting axis, and the adjustment rod is rotatably connected to the first fixed plate via a rotating axis.

[0017] Preferably, a spring is provided on one side of the adjusting rod, one end of the spring is fixed to the first fixing plate, and the other end of the spring is fixed to the adjusting rod and is located on a side of the rotating shaft away from the limiting shaft.

[0018] Preferably, the second fixing plate is provided with a plurality of weight-reducing openings, and the plurality of weight-reducing openings are evenly distributed circumferentially between the boss and the second annular groove.

[0019] Compared with the prior art, the cab seat provided by the utility model has the following beneficial effects:

[0020] Due to the adoption of the above technical scheme, the utility model has the advantages of simple structure, ingenious design and low cost. The setting of the rotating mechanism enables the driver to adjust the rotation angle of the seat in the cab to put himself in the best resting posture to achieve the most comfortable resting effect; while the first fixed plate and the second fixed plate are rotatably connected by bearings, balls are also provided between the two for auxiliary support and rotation, which increases the stability and smoothness of the rotational connection between the first fixed plate and the second fixed plate, and also improves the connection strength of the first fixed plate and the second fixed plate, thereby increasing the service life of the seat; the seat body is positioned by the cooperation of the positioning plate and the adjustment handle, which is easy to operate, and the positioning plate is fixed to the boss on the second fixed plate by bolts, is firmly connected, and is arranged above the first fixed plate for easy disassembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0022] Figure 1 This is a front view of the cab seat of the utility model;

[0023] Figure 2 This is a three-dimensional diagram of the utility model without the seat body and the base;

[0024] Figure 3 This is a top view of the utility model without the seat body and the base;

[0025] Figure 4 This is a three-dimensional diagram of the utility model with the seat body and the base removed and the footrest mechanism in an extended state;

[0026] Figure 5 It is a side view of the footrest mechanism of the utility model in a retracted state;

[0027] Figure 6 It is a side view of the footrest mechanism of the utility model in an extended state;

[0028] Figure 7 It is a three-dimensional diagram of the footrest mechanism of the utility model in an extended state;

[0029] Figure 8 It is a partial three-dimensional diagram of the footrest mechanism of the utility model;

[0030] Fig. 9 It is an exploded view of the rotating mechanism of the utility model;

[0031] Fig.10 It is a front view of the rotating mechanism of the utility model;

[0032] Fig.11 for Fig.10 The cross-sectional view of the AA surface;

[0033] Fig.12 It is a bottom view of the first fixing plate of the utility model.

[0034] Among them, 1. seat body, 11. connecting plate, 2. forward and backward moving mechanism, 21. left slide rail, 22. right slide rail, 23. locking handle, 3. footrest mechanism, 31. first slide bar, 311. first slide slot, 32. second slide bar, 321. second slide slot, 322. first slide shaft, 33. third slide bar, 331. third slide slot, 332. second slide shaft, 333. extension port, 34. footrest, 341. support plate body, 342. fixing ear, 343. third slide shaft, 35. auxiliary support member, 351. first support part, 352. second support part, 36. first support plate, 37. Second support plate, 38. Third support plate, 39. Fourth support plate, 4. Rotating mechanism, 41. First fixed plate, 411. Through opening, 412. First annular groove, 42. Second fixed plate, 421. Boss, 422. Weight reduction opening, 423. Second annular groove, 43. Positioning plate, 431. First avoidance opening, 432. Positioning groove, 44. Adjusting handle, 441. Adjusting rod, 442. Handle part, 443. Limiting part, 4431. Limiting shaft, 444. Rotating shaft, 445. Spring, 45. Bearing, 46. Cover plate, 47. Partition plate, 471. Second avoidance opening, 48. Ball, 5. Base. DETAILED DESCRIPTION

[0035] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0037] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0038] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0039] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0040] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0041] See also Figure 1 The present embodiment discloses a cab seat, comprising a seat body 1, a front-and-rear moving mechanism 2, a foot support mechanism 3, a rotating mechanism 4, a lifting mechanism and a base 5. The base 5 is arranged at the bottom of the seat body 1, and the seat body 1 is fixed in the cab through the base 5. The lifting mechanism (not shown in the figure) is located inside the base 5, and the front-and-rear moving mechanism 2, the foot support mechanism 3 and the rotating mechanism 4 are all located between the seat body 1 and the base 5.

[0042] See also Figure 2 and Figure 3 The rotating mechanism 4 is disposed between the seat body 1 and the base 5 and is used to control the rotation of the seat body 1. The rotating mechanism 4 includes a first fixing plate 41 for fixing the seat body 1, a second fixing plate 42 fixed to the base 5, a positioning plate 43 fixed to the second fixing plate 42, and an adjustment handle 44 disposed on the first fixing plate 41.

[0043] The first fixing plate 41 is arranged below the seat body 1, and the two are connected by the front-back moving mechanism 2, so that the seat body 1 can move forward and backward on the first fixing plate 41. In this embodiment, the front-back moving mechanism 2 includes a left slide rail 21, a right slide rail 22 and a locking handle 23. The locking handle 23 is arranged on the left slide rail 21 to fix the seat body 1 after the front-back adjustment. The lifting mechanism is arranged in the base 5 and below the second fixing plate 42, and is used to adjust the height of the seat body 1.

[0044] See also Figure 4The foot support mechanism 3 is arranged between the seat body 1 and the first fixing plate 41. The foot support mechanism 3 includes two mutually parallel first sliding bars 31 fixed to the seat body 1, two mutually parallel second sliding bars 32 slidably connected to the first sliding bars 31, two mutually parallel third sliding bars 33 slidably connected to the second sliding bars 32, and a foot support 34 slidably connected to the third sliding bars 33.

[0045] See also Figure 5 , Figure 6 and Figure 7 A first support plate 36 and a second support plate 37 are provided between the second slide bars 32 on both sides, the first support plate 36 is fixed to the rear end of the second slide bar 32, and the second support plate 37 is fixed to the top of the front end of the second slide bar 32; a third support plate 38 and a fourth support plate 39 are provided between the third slide bars 33 on both sides, the third support plate 38 is fixed to the top of the rear end of the third slide bar 33, and the fourth support plate 39 is fixed to the bottom of the front end of the third slide bar 33. The provision of each support bar strengthens the self-strength and structural stability of the foot support mechanism 3.

[0046] The first slide bar 31 is provided with a first slide groove 311 extending along the length direction of the first slide bar 31, the second slide bar 32 is provided with a second slide groove 321 extending along the length direction of the second slide bar 32 and a plurality of first slide shafts 322 penetrating in the first slide groove 311 and freely sliding along the first slide groove 311, the third slide bar 33 is provided with a third slide groove 331 extending along the length direction of the third slide bar 33 and a plurality of second slide shafts 332 penetrating in the second slide groove 321 and freely sliding along the second slide groove 321, and the foot rest 34 includes a support plate body 341 and a third slide shaft 343 arranged in the third slide groove 331 and freely sliding along the third slide groove 331.

[0047] The second slide bar 32 is located on the side where the two first slide bars 31 face each other and is arranged in parallel with the first slide bars 31. The third slide bar 33 is located on the side where the two second slide bars 32 face each other and is arranged in parallel with the second slide bar 32. The first slide shaft 322 is arranged behind the second slide slot 321, and the second slide shaft 332 is arranged behind the third slide slot 331. In this embodiment, two first slide shafts 322 are distributed along the length direction of the second slide bar 32 on one side of the second slide bar 32, and the first slide shaft 322 extends from the second slide bar 32 to the side where the first slide bar 31 on the same side is located and extends into the first slide slot 311. Two second slide shafts 332 are distributed along the length direction of the third slide bar 33 on one side of the third slide bar 33, and the second slide shaft 332 extends from the third slide bar 33 to the side where the second slide bar 32 on the same side is located and extends into the second slide slot 321. This sliding structure makes the footrest mechanism 3 stronger, can adapt to harsh environments and heavy drivers, and is not prone to falling off, getting stuck or breaking.

[0048] See also Figure 8, fixing ears 342 are provided on both sides of the bottom of the support plate body 341, and the third sliding shaft 343 is fixed to the fixing ears 342 and extends from the fixing ears 342 to the side where the third sliding rod 33 is located on the same side and extends into the third sliding groove 331. The end of the third sliding groove 331 away from the second sliding shaft 332 is provided with an extension opening 333 upward, and the end of the third sliding rod 33 away from the second sliding rod 32 is provided with a fourth support plate 39. The fourth support plate 39 is transversely arranged at the bottom of the third sliding rod 33. When the footrest 34 is pulled out, the third sliding shaft 343 slides to the front end along the third sliding groove 331, and then the third sliding shaft 343 slides upward into the extension opening 333, and the bottom of the fixing ears 342 abuts against the fourth support plate 39, and the support plate body 341 can maintain an inclined state. At this time, the driver can place the calf or foot on it, which greatly improves the comfort of leg support.

[0049] In other embodiments, the third sliding shaft 343 is located near the side where the first sliding rod 31 is located, and the support plate body 341 is limited by the support plate body 341 and the third sliding rod 33. When the footrest 34 is pulled out, after the third sliding shaft 343 slides to the front end along the third sliding groove 331, the third sliding shaft 343 slides upward into the extension opening 333, and the bottom of the support plate body 341 abuts against the upper front end of the third sliding rod 33, so that the support plate body 341 can maintain a tilted state. In the above-mentioned limiting mode, the setting of the fourth support plate 39 ensures that the tilt limit can be achieved even when the bottom of the support plate body 341 and the upper front end of the third sliding rod 33 cannot abut against each other.

[0050] The first slide bar 31 is fixed to the seat body 1 through a connecting plate 11 laterally fixed below the seat body 1. An auxiliary support member 35 is provided on the first fixing plate 41 corresponding to the third slide bar 33. The auxiliary support member 35 is fixed to the front side of the first fixing plate 41 and is arranged directly below the third slide bar 33 in the retracted state. The auxiliary support member 35 includes a first support portion 351 fixed to the first fixing plate 41 and a second support portion 352 arranged at the top of the first support portion 351 and in contact with the bottom of the third slide bar 33, and the contact surface between the second support portion 352 and the third slide bar 33 is an arc surface. When the third slide bar 33 is in a state of being stored at the bottom of the seat body 1, the top of the second support portion 352 is in point-to-surface contact with the third slide bar 33. In the process of pulling out the third slide bar 33, the auxiliary support member 35 supports the third slide bar 33 and the friction between them is small, ensuring that the third slide bar 33 can be pulled out stably and smoothly.

[0051] See also Figures 9 to 12In the rotating mechanism 4, the first fixing plate 41 is rotatably arranged relative to the second fixing plate 42, and the positioning plate 43 is arranged above the first fixing plate 41. A boss 421 is arranged in the middle of the second fixing plate 42, and a through hole 411 is arranged in the middle of the first fixing plate 41 for the boss 421 to pass through. A bearing 45 is arranged in the through hole 411, and the bearing 45 is sleeved on the boss 421 and located between the boss 421 and the first fixing plate 41. A plurality of weight-reducing openings 422 are arranged on the second fixing plate 42, and the plurality of weight-reducing openings 422 are evenly distributed around the boss 421 in the circumferential direction.

[0052] The positioning plate 43 is fixed to the boss 421 through the cover plate, the cover plate 46 is fixed to the top of the boss 421, and a first avoidance opening 431 is provided in the middle of the positioning plate 43. The cover plate 46 and the positioning plate 43 are both provided with a plurality of mutually corresponding through holes, and the through holes are located around the first avoidance opening 431. The positioning plate 43 is fixed to the bottom of the cover plate 46 by bolts passing through the corresponding through holes, and a plurality of positioning grooves 432 are provided on the edge of the positioning plate 43.

[0053] A partition 47 is fixed below the positioning plate 43, and a second escape opening 471 is provided in the middle of the partition 47. The diameter of the second escape opening 471 is the same as that of the first escape opening 431. The second escape opening 471, the first escape opening 431 and the cover plate 46 constitute an accommodation space for accommodating the bearing 45, which plays a good protective role for the bearing 45.

[0054] The adjustment handle 44 includes an adjustment rod 441, a handle portion 442 located at the outer end of the adjustment rod 441, and a limiting portion 443 located at the other end of the adjustment rod 441. The limiting portion 443 includes a vertically arranged limiting shaft 4431 for being clamped in the positioning groove 432, and the adjustment rod 441 is rotatably connected to the first fixing plate 41 through a rotating shaft 444. A spring 445 is provided on one side of the adjustment rod 441, one end of the spring 445 is fixed to the first fixing plate 41, and the other end of the spring 445 is fixed to the adjustment rod 441 and is located on the side of the rotating shaft 444 away from the limiting shaft 4431.

[0055] In this embodiment, 7 positioning grooves 432 are evenly spaced within the 90° angle range of the outer edge of the positioning plate 43, that is, the driver can rotate and adjust the seat body 1 to 7 angles within the 90° range. In other embodiments, according to the specific situation and the needs of the driver, different numbers of positioning grooves 432 can be set in different angle ranges to meet actual needs. The handle portion 442 is turned to make the adjustment rod 441 rotate around the rotation axis 444, so that the limiting shaft 4431 exits the positioning groove 432. When the seat body 1 is rotated to the specified position, the handle portion 442 is released, and the limiting shaft 4431 is inserted into the corresponding positioning groove 432 to lock the seat body 1.

[0056] The lower surface of the first fixing plate 41 is provided with a first annular groove 412 coaxially arranged with the through opening 411, and the upper surface of the second fixing plate 42 is provided with a second annular groove 423 corresponding to the first annular groove 412 and having the same structure. The cross sections of the first annular groove 412 and the second annular groove 423 are both arc-shaped, and a plurality of balls 48 of the same size are arranged between the first annular groove 412 and the second annular groove 423. The lower part of the ball 48 is fitted with the inner surface of the second annular groove 423, and the upper part of the ball 48 is fitted with the inner surface of the first annular groove 412, and a gap is provided between the first fixing plate 41 and the second fixing plate 42. When the seat body 1 is rotated, the ball 48 also rolls in the annular groove, which increases the stability and smoothness of the rotational connection between the first fixing plate 41 and the second fixing plate 42, and also improves the connection strength of the first fixing plate 41 and the second fixing plate 42, thereby increasing the service life of the seat.

[0057] It will be apparent to those skilled in the art that various modifications and variations can be made to the above exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention covers modifications and variations of the present invention that fall within the scope of the appended claims and their equivalent technical solutions.

Claims

1. A cab seat, characterized in that: include: Seat body, A base, the base being arranged at the bottom of the seat body, and the seat body being fixed in the cab through the base; A rotating mechanism, the rotating mechanism is arranged between the seat body and the base and is used to control the rotation of the seat body, the rotating mechanism includes a first fixing plate for fixing the seat body, a second fixing plate fixed to the base, a positioning plate fixed to the second fixing plate, and an adjustment handle arranged on the first fixing plate, a plurality of positioning grooves are arranged on the edge of the positioning plate, and one end of the adjustment handle is provided with a limiting shaft for being clamped in the positioning groove; The first fixing plate is rotatably arranged relative to the second fixing plate, and the positioning plate is arranged above the first fixing plate. The adjusting handle is controlled to make the limiting shaft exit the positioning groove. When the seat body is rotated to the specified position, the adjusting handle is controlled to make the limiting shaft fit into the corresponding positioning groove to lock the seat body.

2. The cab seat according to claim 1, characterized in that: A boss is provided in the middle of the second fixing plate, a through hole is provided in the middle of the first fixing plate for the boss to pass through, a bearing is provided in the through hole, and the bearing sleeve is arranged on the boss and located between the boss and the first fixing plate.

3. The cab seat according to claim 2, characterized in that: A second annular groove coaxially arranged with the through opening is formed on the upper surface of the second fixing plate. The cross section of the second annular groove is arc-shaped. A plurality of balls of the same size are arranged in the second annular groove.

4. The cab seat according to claim 3, characterized in that: A first annular groove is formed on the lower surface of the first fixing plate, and the first annular groove and the second annular groove are arranged correspondingly and have the same structure. The ball is located between the first annular groove and the second annular groove, the lower part of the ball is in contact with the inner surface of the second annular groove, and the upper part of the ball is in contact with the inner surface of the first annular groove. A gap is provided between the first fixing plate and the second fixing plate.

5. The cab seat according to claim 4, characterized in that: The positioning plate is fixed on the top of the boss, and a plurality of positioning grooves are evenly spaced within a 90° angle range on the outer edge of the positioning plate.

6. The cab seat according to claim 5, characterized in that: The positioning plate is fixed to the boss through a cover plate, the cover plate is fixed to the top of the boss, a first avoidance opening is provided in the middle of the positioning plate, a plurality of mutually corresponding through holes are provided on the cover plate and the positioning plate, the through holes are located on the peripheral side of the first avoidance opening, and the positioning plate is fixed to the bottom of the cover plate by bolts passing through the corresponding through holes.

7. The cab seat according to claim 6, characterized in that: A partition is fixed below the positioning plate, a second avoidance opening is provided in the middle of the partition, the diameter of the second avoidance opening is the same as the diameter of the first avoidance opening, and the second avoidance opening, the first avoidance opening and the cover plate constitute an accommodating space for accommodating the bearing.

8. The cab seat according to claim 7, characterized in that: The adjustment handle includes an adjustment rod, a grip portion located at the outer end of the adjustment rod, and a limiting portion located at the other end of the adjustment rod. The limiting portion includes the vertically arranged limiting shaft. The adjustment rod is rotatably connected to the first fixed plate through a rotating shaft.

9. The cab seat according to claim 8, characterized in that: A spring is arranged on one side of the adjusting rod, one end of the spring is fixed on the first fixing plate, and the other end of the spring is fixed on the adjusting rod and is located on a side of the rotating shaft away from the limiting shaft.

10. The cab seat according to claim 9, characterized in that: The second fixing plate is provided with a plurality of weight-reducing openings, and the plurality of weight-reducing openings are evenly distributed in the circumferential direction between the boss and the second annular groove.

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