Cab seat
By designing a foot support mechanism with multiple slider chutes, the problems of cumbersome leg support structure and poor comfort in existing tractor seats are solved, and higher comfort and space efficiency are achieved.
Patent Information
- Application Number
- CN202421298362.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-06-06
AI Technical Summary
The leg support structure of the existing tractor cab seats is cumbersome, difficult to process and assemble, and weak strength, resulting in poor comfort of leg support and difficult to achieve the driver's comfortable rest effect.
A cab seat including a seat body, a base and a footrest mechanism is designed. The foot support mechanism consists of multiple slide rods and slide chutes. The legs of people of different heights are placed through sliding cooperation, improving the comfort of leg support.
It realizes leg support with simple structure, clever design and low cost, meets the needs of people of different heights, improves rest comfort, and reclaims space when not in use.
Smart Images
Figure CN222496142U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tractor seats, in particular to a cab seat. Background Art
[0002] In the prior art, the seat in the cab of a tractor generally only provides a single seating function. Nowadays, most drivers will rest in the cab of a tractor. At this time, not only the backrest of the seat needs to be adjustable, but the driver's legs also need to be placed at a comfortable height to ensure a good resting environment. Even if the existing cab seat has a footrest function for placing the legs, its structure is cumbersome, difficult to process and assemble, and weak in strength. The comfort of leg support is poor, and it is difficult for the driver to achieve a comfortable rest effect.
[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, a cab seat is provided, with the seat facing forward, comprising:
[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 footrest mechanism, the footrest mechanism is arranged between the seat body and the base, the footrest mechanism comprises two mutually parallel first sliding rods fixed to the seat body, two mutually parallel second sliding rods slidably connected to the first sliding rods, two mutually parallel third sliding rods slidably connected to the second sliding rods, and a footrest slidably connected to the third sliding rods;
[0009] The first slide bar is provided with a first slide groove extending along the length direction of the first slide bar, the second slide bar is provided with a second slide groove extending along the length direction of the second slide bar and a plurality of first slide shafts passing through the first slide groove and capable of sliding freely along the first slide groove, the third slide bar is provided with a third slide groove extending along the length direction of the third slide bar and a plurality of second slide shafts passing through the second slide groove and capable of sliding freely along the second slide groove, and the foot rest comprises a support plate body and a third slide shaft arranged in the third slide groove and capable of sliding freely along the third slide groove.
[0010] Preferably, a first support plate and a second support plate are provided between the second sliding bars on both sides, the first support plate is located at the rear end of the second sliding bar, and the second support plate is located at the top of the front end of the second sliding bar; a third support plate and a fourth support plate are provided between the third sliding bars on both sides, the third support plate is fixed at the top of the rear end of the third sliding bar, and the fourth support plate is fixed at the bottom of the front end of the third sliding bar.
[0011] Preferably, the first sliding shaft is arranged behind the second sliding groove, and the second sliding shaft is arranged behind the third sliding groove.
[0012] Preferably, the second sliding bar is located on a side where the two first sliding bars face each other and is arranged parallel to the first sliding bars, and the third sliding bar is located on a side where the two second sliding bars face each other and is arranged parallel to the second sliding bars.
[0013] Preferably, two first sliding shafts are distributed on the second sliding bar on one side along the length direction of the second sliding bar, and the first sliding shafts extend from the second sliding bar to the side where the first sliding bar on the same side is located.
[0014] Preferably, two second sliding shafts are distributed on the third sliding bar on one side along the length direction of the third sliding bar, and the second sliding shafts extend from the third sliding bar to the side where the second sliding bar on the same side is located.
[0015] Preferably, fixing ears are provided on both sides of the bottom of the support plate body, and the third sliding shaft is fixed to the fixing ears and extends from the fixing ears to the side where the third sliding rod is located on the same side.
[0016] Preferably, an extension opening is opened upward at the end of the third slide groove away from the second slide shaft, and a fourth support plate is provided at the end of the third slide rod away from the second slide rod. When the foot rest is pulled out, the third slide shaft slides to the front end along the third slide groove, and then slides upward into the extension opening. The bottom of the fixed ear is abutted against the fourth support plate, and the support plate body can maintain an inclined state.
[0017] Preferably, the first slide bar is fixed to the seat body, a first fixing plate fixed to the seat body is provided below the footrest mechanism, and an auxiliary support member is provided on the first fixing plate corresponding to the third slide bar.
[0018] Preferably, the auxiliary support member is fixed on the front side of the first fixed plate and is arranged directly below the third sliding bar in the retracted state, and the auxiliary support member includes a first support portion fixed to the first fixed plate and a second support portion arranged on the top of the first support portion and in contact with the third sliding bar, and the contact surface between the second support portion and the third sliding bar is an arc surface.
[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-mentioned technical scheme, the utility model has the advantages of simple structure, ingenious design and low cost. Through the sliding cooperation setting of the first slide bar, the second slide bar and the third slide bar, the leg placement of people of different heights can be met. The setting of the footrest greatly improves the comfort of leg support, is more ergonomic, and is more conducive to a good rest. At the same time, it can be retracted under the seat body when not in use to save space. At the same time, the slide bars are matched with sliding shafts and sliding grooves, which is simple to process and assemble. The sliding process is stable and smooth, and the strength of the entire footrest mechanism is also enhanced. 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.12It 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 plate 47 is fixed below the positioning plate 43 , and a second escape opening 471 is provided in the middle of the partition plate 47 . The diameter of the second escape opening 471 is the same as that of the first escape opening 431 , and the second escape opening 471 , the first escape opening 431 and the cover plate 46 constitute an accommodation space for accommodating 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, with the seat facing forward, 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 footrest mechanism, the footrest mechanism is arranged between the seat body and the base, the footrest mechanism comprises two mutually parallel first sliding rods fixed to the seat body, two mutually parallel second sliding rods slidably connected to the first sliding rods, two mutually parallel third sliding rods slidably connected to the second sliding rods, and a footrest slidably connected to the third sliding rods; The first slide bar is provided with a first slide groove extending along the length direction of the first slide bar, the second slide bar is provided with a second slide groove extending along the length direction of the second slide bar and a plurality of first slide shafts passing through the first slide groove and capable of sliding freely along the first slide groove, the third slide bar is provided with a third slide groove extending along the length direction of the third slide bar and a plurality of second slide shafts passing through the second slide groove and capable of sliding freely along the second slide groove, and the foot rest comprises a support plate body and a third slide shaft arranged in the third slide groove and capable of sliding freely along the third slide groove.
2. The cab seat according to claim 1, characterized in that: A first support plate and a second support plate are provided between the second sliding bars on both sides, the first support plate is located at the rear end of the second sliding bar, and the second support plate is located at the top of the front end of the second sliding bar; a third support plate and a fourth support plate are provided between the third sliding bars on both sides, the third support plate is fixed to the top of the rear end of the third sliding bar, and the fourth support plate is fixed to the bottom of the front end of the third sliding bar.
3. The cab seat according to claim 2, characterized in that: The first sliding shaft is arranged behind the second sliding groove, and the second sliding shaft is arranged behind the third sliding groove.
4. The cab seat according to claim 3, characterized in that: The second sliding bar is located at a side where the two first sliding bars face each other and is arranged in parallel with the first sliding bars, and the third sliding bar is located at a side where the two second sliding bars face each other and is arranged in parallel with the second sliding bars.
5. The cab seat according to claim 4, characterized in that: Two first sliding shafts are distributed on the second sliding bar on one side along the length direction of the second sliding bar, and the first sliding shafts extend from the second sliding bar to the side where the first sliding bar on the same side is located.
6. The cab seat according to claim 5, characterized in that: Two second sliding shafts are distributed on the third sliding bar on one side along the length direction of the third sliding bar, and the second sliding shafts extend from the third sliding bar to the side where the second sliding bar on the same side is located.
7. The cab seat according to claim 6, characterized in that: The bottom sides of the support plate body are provided with fixing ears, and the third sliding shaft is fixed to the fixing ears and extends from the fixing ears to the side where the third sliding rod is located on the same side.
8. The cab seat according to claim 7, characterized in that: The end of the third sliding groove away from the second sliding shaft is provided with an extension opening upward, and the end of the third sliding rod away from the second sliding rod is provided with a fourth supporting plate. When the foot rest is pulled out, the third sliding shaft slides to the front end along the third sliding groove, and then slides upward into the extension opening. The bottom of the fixing ear is abutted against the fourth supporting plate, and the support plate body can maintain an inclined state.
9. The cab seat according to claim 8, characterized in that: The first slide bar is fixed to the seat body, a first fixing plate fixed to the seat body is provided below the foot support mechanism, and an auxiliary support member is provided on the first fixing plate corresponding to the third slide bar.
10. The cab seat according to claim 9, characterized in that: The auxiliary support member is fixed on the front side of the first fixed plate and is arranged directly below the third sliding bar in the retracted state. The auxiliary support member includes a first support portion fixed to the first fixed plate and a second support portion arranged on the top of the first support portion and in contact with the third sliding bar. The contact surface between the second support portion and the third sliding bar is an arc surface.