Buffer type tray device

Abstract

The utility model provides a buffer type tray device which comprises a tray and a buffer seat mounted at the lower end of the tray, the buffer seat comprises a mounting bracket and a base, a sliding sheet frame is arranged above the base, a first spring is arranged between the base and the sliding sheet frame, the upper end of the sliding sheet frame supports the mounting bracket, and an annular flange is arranged at the lower end of the mounting bracket; and a plurality of guide seats are arranged at the lower end of the sliding sheet frame in the circumferential direction, slidable spring ejector rods are arranged in the guide seats, one ends of the spring ejector rods abut against the inner wall of the annular flange, and the problem that when the robot conveys objects, the objects are prone to falling due to inertia is solved.

Description

Technical Field

[0001] The utility model relates to the field of service robots, in particular to a buffer type tray device. Background Art

[0002] With the continuous development of science and technology and service robot technology, intelligent robots are attracting more and more attention and are becoming more and more close to people's daily lives. For example, the main functions of existing household service intelligent robots are reminders and health monitoring. Robots that can serve tea and water and help transport items have appeared in hotels, giving people a better dining and accommodation experience.

[0003] There are still some problems with the use of object delivery robots. For example, when delivering food and drinks, the objects being delivered may fall over due to bumps or sudden braking during emergency avoidance, causing the objects to spill. Utility Model Content

[0004] The utility model provides a buffer type tray device, which solves the problem that objects are easily dumped due to inertia when the robot transports the objects.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a buffer tray device, including a tray and a buffer seat installed at the lower end of the tray, the buffer seat including a mounting bracket and a base, a slide frame is provided above the base, a first spring is provided between the base and the slide frame, the upper end of the slide frame supports the mounting bracket, the lower end of the mounting bracket is provided with an annular rib, the lower end of the slide frame is provided with a plurality of guide seats along the circumferential direction, a slidable spring top rod is provided in the guide seat, and one end of the spring top rod is against the inner wall of the annular rib.

[0006] In a preferred solution, a first damping sleeve is sleeved in the guide seat, and the spring top rod includes a first guide rod, which is slidably sleeved with the first damping sleeve, a magnetic head is provided at one end of the first guide rod, and a second spring is sleeved on the outside of the first guide rod, and both ends of the second spring respectively abut against the guide seat and the magnetic head, and the magnetic head is used to abut against the annular retaining edge.

[0007] In a preferred solution, an arc-shaped groove is provided on the inner wall of the annular rib, and a rollable ball is provided on the magnetic head portion, and the ball rests on the arc-shaped groove.

[0008] In a preferred embodiment, a plurality of second damping sleeves arranged along the circumferential direction are provided on the base, a slidable second guide rod is provided in the second damping sleeve, one end of the second guide rod is connected to the mounting bracket, and the other end of the second guide rod is provided with a large diameter end, the two ends of the first spring respectively abut against the mounting bracket and the base, a third spring is provided on the side of the base away from the first spring, and the two ends of the third spring respectively abut against the base and the large diameter end.

[0009] In the preferred embodiment, a connecting mounting ring is also provided, the upper end of the connecting mounting ring is connected to the bottom end of the tray, the outer wall of the lower end of the connecting mounting ring is provided with a trapezoidal groove, the upper end of the mounting bracket is provided with a threaded tightening screw, one end of the tightening screw is provided with an arc portion, and the arc portion rests on the trapezoidal groove.

[0010] The beneficial effects of the utility model are as follows: through the pallet with a multi-directional spring mechanism, the robot can be buffered by extending the action time of the force when it brakes suddenly or bumps, thereby reducing the influence of inertia on the transported items and reducing the possibility of tipping; buffer springs and friction damping devices are arranged in the up and down directions, horizontal directions and rotation directions to reduce kinetic energy and meet most usage scenarios of the service robot. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0012] Figure 1 It is a front schematic diagram of the utility model.

[0013] Figure 2 It is a bottom schematic diagram of the utility model.

[0014] Figure 3 It is a structural exploded view of the utility model.

[0015] Figure 4 It is a structural diagram of a buffer seat of the utility model.

[0016] Figure 5 It is a cross-sectional view of the spring push rod of the utility model.

[0017] Figure 6 It is a cross-sectional view of the second guide rod of the utility model.

[0018] Figure 7 It is a schematic diagram of the arc-shaped groove on the inner wall of the annular retaining edge of the mounting bracket of the utility model.

[0019] In the figure: tray 1; connecting mounting ring 2; trapezoidal groove 201; tightening screw 202; arc portion 203; mounting bracket 3; annular rib 301; arc groove 302; slide frame 4; guide seat 401; base 5; docking mounting portion 501; first spring 6; third spring 601; second guide rod 602; second damping sleeve 603; large diameter end 604; spring top rod 7; first guide rod 701; magnetic head 702; ball 703; second spring 704; first damping sleeve 705; buffer seat 8. DETAILED DESCRIPTION

[0020] like Figure 1-7A buffer tray device is provided, comprising a tray 1 and a buffer seat 8 installed at the lower end of the tray 1, the buffer seat 8 comprising a mounting bracket 3 and a base 5, a slide frame 4 is provided above the base 5, a first spring 6 is provided between the base 5 and the slide frame 4, the upper end of the slide frame 4 supports the mounting bracket 3, the lower end of the mounting bracket 3 is provided with an annular rib 301, the lower end of the slide frame 4 is provided with a plurality of guide seats 401 along the circumferential direction, a slidable spring push rod 7 is provided in the guide seat 401, and one end of the spring push rod 7 is against the inner wall of the annular rib 301.

[0021] A docking installation portion 501 is provided at one end of the base 5 away from the tray 1. The docking installation portion 501 is an annular boss-shaped structure and is provided with a threaded hole, which can be conveniently connected and positioned with the arm or housing of the service robot.

[0022] The slide frame 4 can adopt an annular structure, the upper end of the first spring 6 abuts against the lower end of the slide frame 4, the lower end of the first spring 6 abuts against the upper end of the base 5, the lower end of the mounting bracket 3 presses on the slide frame 4, and the tray 1 is mounted on the mounting bracket 3, so the slide frame 4, the mounting bracket 3 and the tray 1 can float up and down. The mounting bracket 3 and the tray 1 can slide horizontally along the upper surface of the slide frame 4 and gradually reduce the kinetic energy through the friction resistance of the slide frame 4. The spring top rod 7 is annular and abuts against the inner wall of the annular retaining edge 301, restricting the translation range and allowing the tray 1 to return to its original position.

[0023] When the robot accelerates or decelerates, or goes over a bump, causing up and down vibrations, the horizontal and vertical spring mechanisms provide buffering, preventing the items in the tray from tipping over due to inertia.

[0024] In the preferred embodiment, a first damping sleeve 705 is sleeved in the guide seat 401, and the spring top rod 7 includes a first guide rod 701, which is slidably sleeved with the first damping sleeve 705. A magnetic head 702 is provided at one end of the first guide rod 701, and a second spring 704 is sleeved on the outside of the first guide rod 701. The two ends of the second spring 704 respectively abut against the guide seat 401 and the magnetic head 702, and the magnetic head 702 is used to abut against the annular retaining edge 301.

[0025] The first damping sleeve 705 has a certain friction force. The first guide rod 701 is inserted into the first damping sleeve 705. The second spring 704 is initially compressed to a certain amount. When the mounting bracket 3 moves laterally, the ball 703 and the first guide rod 701 are squeezed to cause the first guide rod 701 to retract. The first guide rod 701 at the other end extends outward, and then tends to return to its original position and swings back and forth. The first damping sleeve 705 relies on friction to repeatedly consume kinetic energy, and finally makes the swing amplitude smaller and smaller, and finally returns to its original position.

[0026] In a preferred solution, an arc-shaped groove 302 is provided on the inner wall of the annular rib 301 , and a rollable ball 703 is provided on the magnetic head 702 , and the ball 703 abuts against the arc-shaped groove 302 .

[0027] A spherical pit is provided at the end of the magnetic head 702 to absorb the ball 703. A stopper structure bent inward is provided at the lower end of the annular rib 301 to prevent the slider frame 4 and the mounting bracket 3 from separating.

[0028] The arc groove 302 can limit the rotation range of the tray 1. The ball 703 cooperates with the arc groove 302 to allow the annular rib 301 to rotate circumferentially at a certain angle and gradually return to its original position under the action of the second spring 704, with a certain rotation buffer time, so that when the robot rotates, the items in the tray are not easy to tip over.

[0029] In the preferred embodiment, a plurality of second damping sleeves 603 arranged along the circumferential direction are provided on the base 5, a slidable second guide rod 602 is provided in the second damping sleeve 603, one end of the second guide rod 602 is connected to the mounting bracket 3, and the other end of the second guide rod 602 is provided with a large diameter end 604, the two ends of the first spring 6 respectively abut against the mounting bracket 3 and the base 5, a third spring 601 is provided on the side of the base 5 away from the first spring 6, and the two ends of the third spring 601 respectively abut against the base 5 and the large diameter end 604.

[0030] The first spring 6 and the third spring 601 are sleeved on the second guide rod 602, but are respectively located on both sides of the base 5 to keep the mounting bracket 3 stable. The third spring 601 ensures that the slide frame 4 can be reset.

[0031] In the preferred embodiment, a connecting mounting ring 2 is further provided, the upper end of which is connected to the bottom end of the tray 1, a trapezoidal groove 201 is provided on the outer wall of the lower end of the connecting mounting ring 2, a threaded tightening screw 202 is provided on the upper end of the mounting bracket 3, and an arc portion 203 is provided at one end of the tightening screw 202, which abuts against the trapezoidal groove 201.

[0032] An annular protrusion structure is provided at the center of the bottom of the tray 1. The upper end of the connecting mounting ring 2 is positioned with the bottom of the tray 1 through a flange and fixed by screws. The upper end of the mounting bracket 3 is provided with an annular wall, which is provided with threaded holes and is installed with a tightening screw 202. The connecting mounting ring 2 can change its structure and size according to the specifications of the tray 1, so that the buffer seat 8 can adapt to more trays.

[0033] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A buffer tray device, characterized in that: The utility model comprises a tray (1) and a buffer seat (8) installed at the lower end of the tray (1), the buffer seat (8) comprising a mounting bracket (3) and a base (5), a slide frame (4) is provided above the base (5), a first spring (6) is provided between the base (5) and the slide frame (4), the upper end of the slide frame (4) supports the mounting bracket (3), the lower end of the mounting bracket (3) is provided with an annular retaining edge (301), the lower end of the slide frame (4) is provided with a plurality of guide seats (401) along the circumferential direction, a slidable spring push rod (7) is provided in the guide seat (401), and one end of the spring push rod (7) abuts against the inner wall of the annular retaining edge (301).

2. The buffer tray device according to claim 1, characterized in that: A first damping sleeve (705) is sleeved in the guide seat (401), and the spring top rod (7) comprises a first guide rod (701). The first guide rod (701) is slidably sleeved with the first damping sleeve (705). A magnetic head (702) is provided at one end of the first guide rod (701). A second spring (704) is sleeved outside the first guide rod (701). Two ends of the second spring (704) respectively abut against the guide seat (401) and the magnetic head (702), and the magnetic head (702) is used to abut against the annular retaining edge (301).

3. The buffer tray device according to claim 2, characterized in that: An arc-shaped groove (302) is provided on the inner wall of the annular rib (301), and a rollable ball (703) is provided on the magnetic head (702), and the ball (703) abuts against the arc-shaped groove (302).

4. The buffer tray device according to claim 1, characterized in that: A plurality of second damping sleeves (603) arranged in a circumferential direction are provided on the base (5); a slidable second guide rod (602) is provided in the second damping sleeve (603); one end of the second guide rod (602) is connected to the mounting bracket (3); the other end of the second guide rod (602) is provided with a large diameter end (604); two ends of the first spring (6) respectively abut against the mounting bracket (3) and the base (5); a third spring (601) is provided on a side of the base (5) away from the first spring (6); two ends of the third spring (601) respectively abut against the base (5) and the large diameter end (604).

5. The buffer tray device according to claim 1, characterized in that: A connecting mounting ring (2) is also provided, the upper end of the connecting mounting ring (2) is connected to the bottom end of the tray (1), the outer wall of the lower end of the connecting mounting ring (2) is provided with a trapezoidal groove (201), the upper end of the mounting bracket (3) is provided with a threaded tightening screw (202), one end of the tightening screw (202) is provided with an arc portion (203), and the arc portion (203) abuts against the trapezoidal groove (201).

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