A seat-rear integrated seat structure and electric pallet truck

Abstract

The utility model relates to the technical field of electric carrier and discloses a seat structure and electric carrier, the seat structure includes base frame, chair back, seat and limiting piece, the chair back liftable is arranged on the base frame, the seat includes the locating frame and the seat pad laid on it, the both ends of locating frame are detachably fixed on the opposite sides of chair back bottom end through mounting bolt, the middle part of locating frame is equipped with the limiting rod, the limiting piece liftable is arranged below the limiting rod, the seat has the unfolding position and the contraction position, when the contraction position, the seat is pasted in the front side of chair back, when the seat is in the unfolding position, the upper end of limiting piece can abut with the limiting rod, because the seat rotation will certainly drive the limiting rod rotation, through the abutment of limiting piece, can limit the seat rotation, can limit the seat rotation, realizes the mechanical locking of seat.

Description

Technical Field

[0001] This utility model relates to the technical field of electric transport vehicles, and specifically to a seat structure with a backrest and an electric transport vehicle. Background Technology

[0002] Electric pallet trucks are devices used for moving goods. During the moving process, the driver needs to constantly observe the position of the goods to achieve accurate and safe handling. However, due to the varying heights of the goods, the driver may not be able to observe the position of the goods well while sitting in the driver's seat, and thus needs to stand up. However, the conventional seat structure can interfere with the driver's body distribution when standing, leading to inconvenience in operation.

[0003] In the existing technology, in order to solve the above problems, the conventional seat structure is divided into a base frame, a backrest and a seat. By rotating the seat, it can avoid interfering with the driver's body. However, since the seat needs to rotate, it cannot achieve high-strength mechanical fixation. It can only achieve position holding and position switching through components such as hydraulic cylinders and pneumatic cylinders to prevent it from rotating randomly due to the driver's own weight. However, the hydraulic cylinders and pneumatic cylinders are always in working state, which leads to excessive energy consumption. Utility Model Content

[0004] This utility model addresses the aforementioned problems. Its purpose is to provide an integrated seat structure and an electric transport vehicle, which solves the problems that require the driver to stand and observe the position of the goods during the transport process and that conventional seat structures cause physical interference. At the same time, the seat is supported by limiting components to achieve mechanical support and save on oil cylinders or air cylinders.

[0005] To achieve the above objectives, this utility model provides a seat structure that integrates sitting and reclining functions, comprising:

[0006] Base frame;

[0007] The chair back is height-adjustable and mounted on the base frame;

[0008] The chair seat includes a positioning frame and a seat cushion laid on it. The two ends of the positioning frame are rotatably fixed to the opposite sides of the bottom end of the chair back by mounting bolts. A limiting rod is provided in the middle of the positioning frame.

[0009] A limiting component, which is vertically and retractably positioned below the limiting rod;

[0010] The chair seat has:

[0011] Extended position: Extends horizontally to the outer side of the chair back to form a seating support surface;

[0012] Retractable position: Fits the front side of the chair back;

[0013] The operator can manually switch the position of the chair seat;

[0014] When the chair seat is in the unfolded position, the upper end of the limiting member can abut against the limiting rod to restrict the rotation of the chair seat.

[0015] According to the above-described integrated seat structure, the limiting component includes a positioning seat and a limiting bolt. The lower end of the limiting bolt passes through the positioning seat and is threadedly engaged with the positioning seat. The upper end of the limiting bolt is located directly below the limiting rod and can abut against the bottom of the limiting rod.

[0016] According to the above-described integrated seat structure, the limiting component further includes a limiting plate, which is engaged on the upper end of the limiting bolt, and the diameter of the limiting plate is larger than the diameter of the limiting bolt.

[0017] According to the above-described integrated seat structure, the lower end of the limiting bolt is provided with a first gripping part, the diameter of the first gripping part being larger than the diameter of the threaded hole on the limiting bolt and the positioning seat.

[0018] According to the above-described integrated seat structure, the backrest includes a cushion and a sliding frame. The cushion is laid on the front side of the sliding frame and is vertically and flexibly mounted on the front side of the base frame via the sliding frame. The positioning frame is fixedly connected to the lower end of the sliding frame.

[0019] The aforementioned integrated seat structure further includes a lifting cylinder, which is arranged vertically on the rear side of the base frame. The base frame has two vertically arranged through slots, and the sliding frame has a mounting seat on its rear side. The piston rod of the lifting cylinder is hinged to the mounting seat.

[0020] According to the above-described integrated seat structure, the sliding frame is provided with a plurality of guide wheel groups arranged symmetrically in pairs on the rear side. The guide wheel group includes a first guide wheel located on the front side of the base frame and a second guide wheel located on the rear side of the base frame. The first guide wheel and the second guide wheel together form a guide groove. The side walls on both sides of the through groove are movably engaged in the through groove, and the mounting seat is located between the two second guide wheels.

[0021] The aforementioned integrated seat structure further includes a locking component, which includes a pin fixed to the sliding frame. The base frame is provided with a plurality of positioning holes arranged in a vertical direction, and the pin can be inserted into any of the positioning holes to fix the sliding frame.

[0022] According to the above-described integrated seat structure, the sliding frame has first mounting holes on both sides symmetrically, and the positioning frame has second mounting holes at both ends. The second mounting holes correspond to the first mounting holes, and the mounting bolts can be inserted into the connecting holes of the first mounting holes and the second mounting holes.

[0023] An electric pallet truck, comprising:

[0024] The chassis, on which the driver's cab is located;

[0025] The integrated seating structure described above is installed within the cockpit.

[0026] This utility model has the following beneficial effects:

[0027] 1. By supporting the seat with limiting components, mechanical support for the seat is achieved. Compared with the existing technology that only uses hydraulic cylinders, air cylinders and other components to achieve position holding and switching, the cost of hydraulic cylinders, air cylinders and other components can be effectively saved.

[0028] 2. The locking mechanism can mechanically lock the sliding frame and provide vertical support for the seat, thus further improving the stability of the seat.

[0029] 3. When the driver needs to stand to observe the position of the goods, the seat can be switched to the retracted position to avoid interfering with the driver's body, thus improving the convenience and safety of operation. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the seat structure of the embodiment;

[0031] Figure 2 This is a schematic diagram of the internal structure of the seat in an embodiment;

[0032] Figure 3 This is a schematic diagram of the seat back structure in an embodiment;

[0033] Figure 4 This is a schematic diagram of the guide wheel assembly structure in an embodiment.

[0034] In the picture:

[0035] 100. Base frame; 110. Through slot; 120. Positioning hole;

[0036] 200. Chair back; 210. Backrest cushion; 220. Sliding frame; 221. Guide wheel assembly; 221a. First guide wheel; 221b. Second guide wheel; 221c. Guide groove; 222. Mounting base;

[0037] 300. Seat; 310. Positioning bracket; 311. Mounting bolt; 312. Limiting rod; 320. Seat cushion;

[0038] 400, Limiting component; 410, Positioning seat; 420, Limiting bolt; 421, First gripping part; 430, Limiting plate;

[0039] 500. Lifting cylinder;

[0040] 600. Locking component; 610. Bolt. Detailed Implementation

[0041] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0042] like Figure 1-4 As shown, an integrated seat structure includes a base frame 100, a backrest 200, a seat 300, and a limiting member 400.

[0043] Specifically, the chair back 200 is height-adjustable and mounted on the base frame 100. The chair seat 300 includes a positioning frame 310 and a seat cushion 320 laid on it. The two ends of the positioning frame 310 are rotatably fixed to the opposite sides of the bottom end of the chair back 200 by mounting bolts 311. It can rise or fall synchronously with the chair back 200. A limiting rod 312 is provided in the middle of the positioning frame 310. A limiting member 400 is height-adjustable and positioned below the limiting rod 312. Since both ends of the positioning frame 310 can rotate, when the limiting member 400 releases the limiting rod 312, the positioning frame 310 can achieve stepless adjustment of its arrangement angle by rotating. The seat 300 has at least two positions: an extended position and a retracted position. In the extended position, the seat 300 extends horizontally to the outside of the frame, forming a seating support surface, which is suitable for the driver to sit in. In the retracted position, the seat 300 is close to the front of the backrest 200, so the seat 300 will not interfere with the driver and can switch between sitting and standing positions. When the seat 300 is in the extended position, the upper end of the limiting member 400 can abut against the limiting rod 312. Since the rotation of the seat 300 will definitely drive the limiting rod 312 to rotate, the abutment of the limiting member 400 can limit the rotation of the seat 300, support the overall weight of the seat 300, and achieve mechanical locking.

[0044] In this embodiment, the seat cushion 320 is made of highly elastic material, such as sponge or other highly elastic materials, which can provide more comfortable support for the human body.

[0045] Furthermore, the limiting component 400 includes a positioning seat 410 and a limiting bolt 420. The lower end of the limiting bolt 420 passes through the positioning seat 410 and is threadedly engaged with the positioning seat 410. The upper end of the limiting bolt 420 is located directly below the limiting rod 312 and can abut against the bottom of the limiting rod 312. Of course, when it is necessary to adjust the position of the chair seat 300, its height can also be adjusted by rotating the limiting bolt 420 to separate or abut against the limiting rod 312, thereby achieving locking or unlocking.

[0046] Furthermore, the limiting component 400 also includes a limiting disc 430, which is mounted on the upper end of the limiting bolt 420. The diameter of the limiting disc 430 is larger than that of the limiting bolt 420. When the limiting bolt 420 rises, it drives the limiting disc 430 to rise, thereby causing the limiting disc 430 to abut against the limiting rod 312, thus increasing the contact area with the limiting rod 312 and reducing the number of stress points at each point.

[0047] Furthermore, a first gripping part 421 is provided on the lower end of the limiting bolt 420. The diameter of the first gripping part 421 is larger than the diameter of the threaded hole on the limiting bolt 420 and the positioning seat 410. The first gripping part 421 is convenient for the operator to grip and can prevent the limiting bolt 420 from dislodging from the positioning seat 410.

[0048] In this embodiment, to ensure the mechanical locking strength, the diameter of the limit bolt 420 is about 12mm and the length is about 100mm. The mounting bolt 311 adopts the standard M8 specification, has a length of about 30mm, and is equipped with anti-loosening washers and nuts to ensure a firm and reliable connection.

[0049] Furthermore, the chair back 200 includes a cushion 210 and a sliding frame 220. The cushion 210 is laid on the front side of the sliding frame 220 and is height-adjustable on the front side of the base frame 100 via the sliding frame 220. The sliding frame 220 provides support for the cushion 210 and enables its sliding connection. The cushion 210 is made of high-elasticity sponge material and is covered with a breathable fabric to provide comfortable back support. The sliding frame 220 is made of aluminum alloy material, which is lightweight and strong, and is easy to raise and lower.

[0050] Furthermore, the integrated seat structure also includes a lifting cylinder 500, which is arranged vertically on the rear side of the base frame 100. The base frame 100 has two vertically arranged through slots 110, and the sliding frame 220 has a mounting seat 222 on the rear side. The piston rod of the lifting cylinder 500 is hinged to the mounting seat 222. The lifting cylinder 500 provides power for the lifting of the backrest 200, saving labor. The maximum stroke of the lifting cylinder 500 is about 200mm, which can meet the needs of users of different heights.

[0051] Furthermore, a plurality of guide wheel sets 221 are provided on the rear side of the sliding frame 220, arranged symmetrically in pairs. The guide wheel set 221 includes a first guide wheel 221a located on the front side of the base frame 100 and a second guide wheel 221b located on the rear side of the base frame 100. The first guide wheel 221a and the second guide wheel 221b together form a guide groove 221c. The side walls on both sides of the through groove 110 are movably engaged in the through groove 110, and the mounting base 222 is located between the two second guide wheels 221b. In this embodiment, a total of four guide wheel sets 221 are provided, which are arranged symmetrically in pairs in the horizontal direction on the rear side of the sliding frame 220. The guide groove 221c formed by the first guide wheel 221a and the second guide wheel 221b provides a guiding function for the upward movement of the sliding frame 220.

[0052] Furthermore, the integrated seat structure also includes a locking component 600, which includes a pin 610 fixed to the sliding frame 220. The base frame 100 is provided with a plurality of positioning holes 120 arranged in the vertical direction. The pin 610 can be inserted into any positioning hole 120 to fix the sliding frame 220. After the lifting cylinder 500 drives the sliding frame 220 to rise or fall to a preset height, the pin 610 can be inserted into the corresponding positioning hole 120 to achieve its positioning. In this embodiment, in order to facilitate the operation of the pin 610, a plum blossom-shaped second grip is provided at the head of the pin 610. The pin 610 in the locking component 600 has a diameter of about 8mm and a length of about 50mm. The positioning holes 120 on the base frame 100 are spaced about 30mm apart, with a total of 5-7 holes to meet different height adjustment requirements.

[0053] In this embodiment, the pin 610 has a built-in return spring. When a force is applied to pull the pin 610 out of the positioning hole 120, the return spring will be squeezed. After release, the return spring can drive the pin 610 to automatically reset.

[0054] Furthermore, first mounting holes are provided on both symmetrical sides of the sliding frame 220, and second mounting holes are provided on both ends of the positioning frame 310. The second mounting holes correspond to the first mounting holes, and the mounting bolts 311 can be inserted into the connecting hole between the first mounting holes and the second mounting holes. Since the first mounting holes and the second mounting holes are both round holes, the positioning frame 310 can still maintain the correspondence between the first mounting holes and the second mounting holes when rotated, and can still be positioned by the mounting bolts 311 after rotation.

[0055] In this embodiment, the base frame 100 is made of metal material, which has sufficient strength and stability to withstand the user's weight and the pressure of daily use.

[0056] Specifically, an electric pallet truck includes a frame and an integrated seating structure, with a driver's cab mounted on the frame and the integrated seating structure installed inside the driver's cab.

[0057] This electric pallet truck adopts an integrated seat structure, which not only improves the utilization of the cab space, but also provides the driver with a comfortable operating environment, reduces fatigue during long working hours, and improves work efficiency and safety.

[0058] In this embodiment, an integrated seat structure and an electric transport vehicle are disclosed. The seat structure includes a base frame 100, a backrest 200, a seat 300, and a limiting member 400. The backrest 200 is height-adjustable on the base frame 100. The seat 300 includes a positioning frame 310 and a seat cushion 320 laid on it. The two ends of the positioning frame 310 are rotatably fixed to the opposite sides of the bottom end of the backrest 200 by mounting bolts 311. A limiting rod 312 is provided in the middle of the positioning frame 310, and the limiting member 400 is height-adjustable on the limiting rod 312. Below, the seat has an extended position and a retracted position. In the extended position, the seat 300 extends horizontally to the outside of the frame, forming a seating support surface, which is suitable for the driver to sit in. In the retracted position, the seat 300 is close to the front side of the backrest 200. When the seat 300 is in the extended position, the upper end of the limiting member 400 can abut against the limiting rod 312. Since the rotation of the seat 300 will definitely drive the limiting rod 312 to rotate, the abutment of the limiting member 400 can limit the rotation of the seat 300 and can mechanically lock the seat 300.

[0059] The technical solution of this utility model has been described in detail above with reference to the accompanying drawings. The described embodiments are used to help understand the concept of this utility model. The specific embodiments described herein are merely illustrative examples of the spirit of this utility model. Those skilled in the art to which this utility model pertains can make various modifications or additions to the described specific embodiments or use similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0060] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0061] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0062] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0063] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A seat structure integrating sitting and reclining functions, characterized in that, include: Base frame; The chair back is height-adjustable and mounted on the base frame; The chair seat includes a positioning frame and a seat cushion laid on it. The two ends of the positioning frame are rotatably fixed to the opposite sides of the bottom end of the chair back by mounting bolts. A limiting rod is provided in the middle of the positioning frame. A limiting component, which is vertically and retractably positioned below the limiting rod; The chair seat has: Extended position: Extends horizontally to the outer side of the chair back to form a seating support surface; Retractable position: Fits the front side of the chair back; The operator can manually switch the position of the chair seat; When the chair seat is in the unfolded position, the upper end of the limiting member can abut against the limiting rod to restrict the rotation of the chair seat.

2. The integrated seating structure according to claim 1, characterized in that, The limiting component includes a positioning seat and a limiting bolt. The lower end of the limiting bolt passes through the positioning seat and is threadedly engaged with the positioning seat. The upper end of the limiting bolt is located directly below the limiting rod and can abut against the bottom of the limiting rod.

3. The integrated seating structure according to claim 2, characterized in that, The limiting component also includes a limiting disc, which is engaged on the upper end of the limiting bolt, and the diameter of the limiting disc is larger than the diameter of the limiting bolt.

4. The integrated seating and reclining seat structure according to claim 2, characterized in that, The lower end of the limiting bolt is provided with a first gripping part, the diameter of which is larger than the diameter of the threaded hole on the limiting bolt and the positioning seat.

5. The integrated seating and reclining seat structure according to claim 1, characterized in that, The chair back includes a cushion and a sliding frame. The cushion is laid on the front side of the sliding frame and is vertically and flexibly mounted on the front side of the base frame via the sliding frame. The positioning frame is fixedly connected to the lower end of the sliding frame.

6. The integrated seating structure according to claim 5, characterized in that, It also includes a lifting cylinder, which is arranged vertically on the rear side of the base frame. The base frame has two through slots arranged vertically. The sliding frame has a mounting seat on the rear side. The piston rod of the lifting cylinder is hinged to the mounting seat.

7. The integrated seating and reclining seat structure according to claim 6, characterized in that, The sliding frame is provided with a plurality of guide wheel groups arranged symmetrically in pairs. The guide wheel group includes a first guide wheel located on the front side of the base frame and a second guide wheel located on the rear side of the base frame. The first guide wheel and the second guide wheel together form a guide groove. The side walls on both sides of the through groove are movably locked in the through groove, and the mounting seat is located between the two second guide wheels.

8. The integrated seating structure according to claim 6, characterized in that, It also includes a locking element, which includes a pin fixed on the sliding frame. The base frame is provided with a plurality of positioning holes arranged in a vertical direction. The pin can be inserted into any of the positioning holes to fix the sliding frame.

9. The integrated seating and reclining seat structure according to claim 5, characterized in that, The sliding frame has first mounting holes on both sides symmetrically, and the positioning frame has second mounting holes at both ends. The second mounting holes correspond to the first mounting holes, and the mounting bolts can be inserted into the connecting holes of the first mounting holes and the second mounting holes.

10. An electric pallet truck, characterized in that, include: The chassis, on which the driver's cab is located; The integrated seating structure as described in any one of claims 1-9 It is installed inside the cockpit.

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