Vehicle-mounted folding table device for special operation vehicle

Abstract

The invention relates to a vehicle-mounted folding table device for a special operation vehicle. The vehicle-mounted folding table device is characterized in that a back plate is fixedly connected with the back of a seat in parallel; the two upper connecting rods are arranged on the inner sides of the two side edges of the back plate respectively, and the upper end parts of the two upper connecting rods are hinged to the upper end parts of the two side plates of the back plate through a group of shaft assemblies with damping respectively; the middle parts of the two upper connecting rods vertically and oppositely extend inwards to be connected with limiting pins; the lower end parts of the two upper connecting rods are respectively hinged with a supporting seat through a group of shaft components with damping; the two supporting seats are respectively and fixedly arranged on the middle front parts, close to the two sides, of the back surface of the table plate; the two lower connecting rods are respectively arranged on the inner sides of the two side edges of the back plate; one end of each of the two lower connecting rods is hinged with the lower end part of the corresponding side edge of the back plate through a group of shaft assemblies with damping; and the other ends of the two lower connecting rods are respectively hinged with a supporting seat through a group of shaft components with damping, and the two supporting seats are respectively and fixedly arranged at the front parts, close to the two sides, of the back surface of the table plate. The table board can be conveniently opened and recycled, safety and reliability are achieved, and use is stable.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle-mounted auxiliary devices, and in particular relates to a vehicle-mounted folding table device for a special operation vehicle. Background Art

[0002] Special operation vehicles refer to motor vehicles equipped with special instruments, equipment, electrical systems, etc. for professional work such as testing, measurement, firefighting, medical treatment, cleaning, etc. The space inside a special operation vehicle is small, and there is no fixed desktop for reviewing documents, operating a portable computer, etc. Therefore, it is particularly important to equip the vehicle with a folding table device to perform the above operations. The working environment of special operation vehicles is relatively harsh, and the folding table on the vehicle is frequently folded and released. In view of this situation, it is necessary to design a folding table device for special operation vehicles that is easy to fold and release and can provide stable support. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a folding table device for special operation vehicles which has a simple structure, is convenient to open and retract, is safe and reliable, and is stable to use.

[0004] The above-mentioned object of the present invention is achieved by the following technical solutions:

[0005] A folding table device mounted on a special operation vehicle comprises a back plate, a table plate, two upper connecting rods and two lower connecting rods; the back plate adopts a plate body with side edges arranged on both sides, and the table plate is a flat plate; the two upper connecting rods have the same structure, and the two lower connecting rods have the same structure;

[0006] The backboard is fixedly connected in parallel with the back of the seat; the two upper connecting rods are respectively arranged on the inner sides of the two side edges of the backboard and are arranged in parallel, and the upper ends of the two upper connecting rods are respectively hingedly connected with the upper ends of the two side plates of the backboard through a group of shaft assemblies with damping; a limit pin is vertically extended and connected inwardly in the middle of the two upper connecting rods; the lower ends of the two upper connecting rods are respectively hingedly connected to a support seat through a group of shaft assemblies with damping, and the two support seats are respectively fixedly installed at the middle front part of the back of the table board near the two sides;

[0007] The two lower connecting rods are respectively arranged on the inner sides of the two side edges of the back plate and are arranged in parallel; one end of the two lower connecting rods is respectively hingedly connected to the lower end of the corresponding side edge of the back plate through a set of shaft assemblies with damping; the other end of the two lower connecting rods is respectively hingedly connected to a support seat through a set of shaft assemblies with damping, and the two support seats are respectively fixedly installed on the back of the table board near the front position of the two sides;

[0008] When the vehicle-mounted folding table device is in a folded state, the table plate is flipped upward to a position parallel to the middle of the back plate and placed between the two side plates of the back plate; when the vehicle-mounted folding table device is in an opened state, the table plate is flipped downward to a horizontal position, and the two limit pins form a limit contact with the front side of the table plate near the two sides.

[0009] Moreover, each set of shaft components with damping includes a pin shaft, a damping plate I, a damping plate II, two corrugated washers, and a locking nut; the damping plates I and II are alternately and both are installed on the pin shaft in an interference fit manner, a plurality of damping plates I and a plurality of damping plates II constitute a damping plate group, and the two corrugated washers are installed on the pin shaft;

[0010] The pins of the four groups of shaft assemblies with damping connected to the back plate are sequentially installed in the through holes on the corresponding upper connecting rod or the lower connecting rod and the through holes on the side of the back plate from the inside to the outside, and the pins and the side of the back plate are limitedly matched in the circumferential direction; the locking nut is screwed and installed on the external thread of the outer end of the pin, so that the two corrugated washers are pressed against the two ends of the damping plate group; the damping plate II and the through holes on the corresponding upper connecting rod or the through holes on the lower connecting rod form a limited fit in the circumferential direction, and the damping plate I and the through holes on the corresponding upper connecting rod or the through holes on the lower connecting rod form a clearance fit;

[0011] The pins of the four groups of shaft assemblies with damping connected to the supporting seats are sequentially installed in the through holes on the corresponding upper connecting rod or lower connecting rod and the through holes on the corresponding supporting seats from the outside to the inside, and the pins are limitedly matched with the corresponding upper connecting rod or lower connecting rod in the circumferential direction; the locking nut is screwed and installed on the external thread on the inner end of the pin, so that the two corrugated washers are pressed against the two ends of the damping plate group; the damping plate II and the through holes on the corresponding supporting seat form a limited match in the circumferential direction, and the damping plate I and the through holes on the corresponding supporting seat form a clearance match.

[0012] Moreover, a slotted cone-end positioning screw is axially installed on the edge of the internal thread hole of the locking nut, so that the locking nut is fixedly connected to the side edge of the back plate or the supporting seat.

[0013] Moreover, the edge of the damping plate II is provided with a dovetail shaped protrusion, and the edge of the through hole matched with the damping plate II is provided with a dovetail groove cavity, and the dovetail shaped protrusion is embedded in the dovetail groove cavity, so that the two form a limited fit along the circumferential direction.

[0014] The advantages and positive effects of the present invention are:

[0015] 1. The folding table device for special operation vehicles of the present invention adopts a two-link structure. When in use, it occupies less space and can provide a certain space support level for the operator. When in folding, it is integrated with the seat and does not occupy space in the vehicle. At the same time, damping plates are added at each hinge to avoid the sudden return of the link mechanism and increase the service life of the device.

[0016] 2. The device of the present invention has a simple structure, occupies a small space, is easy to process, and has a low manufacturing cost. In particular, the device adds a damping structure, which greatly increases the service life of the device. At the same time, it has the advantages of installation reliability and use stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the installation of the vehicle-mounted portable computer when the vehicle-mounted folding table device is in the open state of the present invention;

[0018] Figure 2 It is a schematic diagram of installing a vehicle-mounted portable computer when the vehicle-mounted folding table device is in a folded state;

[0019] Figure 3 It is a schematic diagram of the overall structure of the folding table device mounted on a special operation vehicle of the present invention;

[0020] Figure 4 This is an exploded view of the A part of the folding table device for special operation vehicles of the present invention;

[0021] Figure 5 It is an exploded view of the B component of the folding table device mounted on the special operation vehicle of the present invention. DETAILED DESCRIPTION

[0022] The structure of the present invention is further described below with reference to the accompanying drawings and by way of examples. It should be noted that the present examples are descriptive rather than restrictive.

[0023] A folding table device for special operation vehicles, see Figure 1-Figure 5 The vehicle-mounted folding table device 2 includes a back plate 201, a table plate, two upper connecting rods and two lower connecting rods. The back plate is a plate body with side edges on both sides. The table plate is a flat plate, and the front of the table plate is used to support equipment or instruments such as a portable computer 3. The two upper connecting rods are upper connecting rod I and upper connecting rod II, and the upper connecting rod I and upper connecting rod II have the same structure, and the two lower connecting rods have the same structure.

[0024] During installation, the back panel 201 is fastened to the back 1 of the seat according to the arrangement of the inner frame of the seat 1. The connection must be firm and reliable. The upper connecting rod I and the upper connecting rod II are respectively arranged on the inner side of the two side edges of the back panel and are arranged in parallel. The upper end of the upper connecting rod I and the upper end of the upper connecting rod II are respectively hinged to the upper end of the two side panels of the back panel through a group of damping shaft assemblies. A limiting pin is vertically extended and connected inwardly in the middle of the upper connecting rod I and the middle of the upper connecting rod II to achieve the limit after the table top is flipped to a horizontal state. The lower end of the upper connecting rod I and the lower end of the upper connecting rod II are respectively hinged to a support seat through a group of damping shaft assemblies, and the two support seats are respectively fixedly installed on the back of the table top near the middle front part of the two sides.

[0025] The two lower connecting rods are respectively arranged on the inner sides of the two sides of the back plate and are arranged in parallel; one end of the two lower connecting rods is respectively hingedly connected to the lower end of the corresponding side of the back plate through a set of shaft assemblies with damping. The other end of the two lower connecting rods is respectively hingedly connected to a support seat through a set of shaft assemblies with damping, and the two support seats are respectively fixedly installed on the back of the table board near the front position of the two sides.

[0026] When the vehicle-mounted folding table device is in a folded state, the table plate is flipped upward to a position parallel to the middle of the back plate and placed between the two side plates of the back plate; when the vehicle-mounted folding table device is in an opened state, the table plate is flipped downward to a horizontal position, and the two limit pins form a limit contact with the front side of the table plate near the two sides.

[0027] The specific structure of the hinge connection of the above-mentioned shaft assembly through damping is as follows:

[0028] The limit pin 203 is in interference fit with the upper connecting rod Ⅰ202 and the upper connecting rod Ⅱ205, and the limit pin 203 is pressed into the mounting holes of the upper connecting rod Ⅰ202 and the upper connecting rod Ⅱ205 by a press.

[0029] The wave washer 209 is inserted into the pin shaft I 212, and the damping sheet I 210 and the damping sheet II 211 are alternately inserted into the pin shaft I 212, and the damping sheet I 210, the damping sheet II 211 and the pin shaft I 212 are interference fit. The assembly parts of the wave washer 209, the damping sheet I 210, the damping sheet II 211 and the pin shaft I 212 are inserted into the through hole with the dovetail groove cavity processed in the upper connecting rod II 205. Since the edge of the damping sheet II 211 is provided with a dovetail convex part, the dovetail convex part of the damping sheet II 211 needs to be rotated in the same direction when it is installed in the upper connecting rod II 205. After the assembly is completed, the pin shaft I 212 protrudes a part of the upper connecting rod II 205. The assembly parts are passed through the waist-shaped hole on the upper left side of the back plate 201. The wave washer 209 passes through the pin shaft I 212 and protrudes from the back plate 201, close to the outside of the back plate 201, and the locking nut 208 is screwed into the pin shaft I 212. Manually rotate the upper connecting rod II 205, and at the same time rotate the locking nut 208 to adjust the preload force. When the upper connecting rod II 205 is rotated to reach the appropriate torque, tighten the locking nut 208, and use a punching and tapping tool to screw in the slotted cone end positioning screw 207 to prevent the locking nut 208 from loosening. The assembly process of the upper connecting rod I 202, the lower connecting rod 206 and the back plate 201 is the same as the assembly process of the upper connecting rod II 205 and the back plate 201.

[0030] Pin shaft II 215 passes through the waist-shaped hole at the lower end of the upper connecting rod II 205, the corrugated washer 209 passes through the pin shaft II 215, the damping plates I 210 and II 211 are alternately inserted into the pin shaft II 215, the damping plates I 210, II 211 and 215 pin shaft II adopt an interference fit, the assembly of the corrugated washer 209, the damping plates I 210, II 211 and the pin shaft II 215 is inserted into the through hole with the dovetail groove cavity processed on the support seat 214, because the edge of the damping plate II 211 is provided with a dovetail protrusion, when it is installed into the support seat 214, the dovetail protrusion part of the damping plate II 211 needs to be rotated in the same direction. After the assembly is completed, the pin II 215 protrudes a part of the support seat 214, the 209 wave washer is inserted into the protruding part of the pin II 215, the locking nut 208 is screwed into the pin II 215, the support seat 214 is rotated by a wrench tool, and the locking nut 208 is rotated to adjust the pre-tightening force. When the rotating support seat 214 reaches a suitable torque, the locking nut 208 is tightened, and the slotted cone end positioning screw 207 is screwed in using a punching and tapping tool to prevent the locking nut 208 from loosening. The assembly process of the upper connecting rod I 202, the lower connecting rod 206 and the support seat 214 is consistent with the assembly process of the upper connecting rod II 205 and the support seat 214. After the support base 214 and the upper connecting rod Ⅰ202, the upper connecting rod Ⅱ205, and the lower connecting rod 206 are installed, the angle of the support base 214 is adjusted so that its installation surface remains in the same plane, and the table top 204 fits against the support base 214 and is fastened by the slotted countersunk screws 213.

[0031] The working principle of the present invention is:

[0032] Since the pin shaft I212 and the back plate 201 are matched with waist-shaped holes, when the upper connecting rod II205 rotates, the pin shaft I212 will not rotate with the upper connecting rod II205, and always maintain a relatively static state with the back plate 201. The dovetail groove cavity processed on the upper connecting rod II205 cooperates with the dovetail-shaped protrusion of the damping plate II211. When the upper connecting rod II205 is rotated, the damping plate II211 will be driven to rotate. Since the damping plate II211 and the pin shaft I212 adopt an interference fit, the two move relative to each other, generating friction resistance. When the upper connecting rod II205 drives the damping plate II211 to rotate, the friction force generated by the interference fit between the damping plate I210 and the pin shaft I212 is greater than the friction force between the damping plate I210 and the damping plate II211, and the movement state of the damping plate I210 and the pin shaft I212 remains relatively static. At this time, the damping plate I210 and the damping plate II211 move relative to each other, generating friction resistance. On the contrary, the damping sheet I 210 and the pin shaft I 212 move relative to each other, and friction resistance is generated between the damping sheet I 210 and the pin shaft I 212. The locking nut 208 provides a pre-tightening force to ensure that the damping sheet I 210 and the damping sheet II 211 fit tightly. After the device is assembled, the wave washer 209 is flattened by the locking nut 208 to prevent loosening.

[0033] Similarly, the lower end of the pin shaft II 215 and the upper connecting rod II 205 are matched with waist-shaped holes, and the pin shaft II 215 and the upper connecting rod II 205 will not move relative to each other. The support seat 214 is fixedly connected to the table top 204. When the table top 204 is rotated, the support seat 214 is driven to rotate. The dovetail groove cavity processed by the support seat 214 cooperates with the dovetail-shaped protrusion of the damping plate II 211, driving the damping plate II 211 to rotate around the pin shaft II 215. Due to the interference fit between the damping plate II 211 and the pin shaft II 215, the damping plate II 211 and the pin shaft II 215 move relative to each other, generating friction resistance. When the friction between the damping sheet I 210 and the pin II 215 is greater than the friction between the damping sheet I 210 and the damping sheet II 211, the damping force of the device is provided by the relative sliding between the damping sheet I 210 and the damping sheet II 211, and vice versa. The wave washer 209 is flattened by the locking nut 208 to prevent loosening.

[0034] According to the working principle of the device, the overall damping force of the device can be adjusted according to the actual working conditions of the device. Adjustment method 1: increasing the pre-tightening force of the locking nut 208 can increase the damping force of the device; adjustment method 2: increasing the number of damping plates I 210 or damping plates II 211 can increase the damping force of the device; adjustment method 3: replacing damping plate I 210 with damping plate II 211 can increase the damping force of the device.

[0035] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A folding table device for a special operation vehicle, characterized in that: It includes a back plate, a table plate, two upper connecting rods and two lower connecting rods; the back plate adopts a plate body with side edges on both sides, and the table plate is a flat plate; the two upper connecting rods have the same structure, and the two lower connecting rods have the same structure; The backboard is fixedly connected in parallel with the back of the seat; the two upper connecting rods are respectively arranged on the inner sides of the two side edges of the backboard and are arranged in parallel, and the upper ends of the two upper connecting rods are respectively hingedly connected with the upper ends of the two side plates of the backboard through a group of damping shaft assemblies; a limit pin is vertically extended and connected inwardly in the middle of the two upper connecting rods; the lower ends of the two upper connecting rods are respectively hingedly connected to a support seat through a group of damping shaft assemblies, and the two support seats are respectively fixedly installed at the middle front position of the back of the table board near the two sides; The two lower connecting rods are respectively arranged on the inner sides of the two side edges of the back plate and are arranged in parallel; one end of the two lower connecting rods is respectively hingedly connected to the lower end of the corresponding side edge of the back plate through a set of shaft assemblies with damping; the other end of the two lower connecting rods is respectively hingedly connected to a support seat through a set of shaft assemblies with damping, and the two support seats are respectively fixedly installed on the back of the table board near the front position of the two sides; When the vehicle-mounted folding table device is in a folded state, the table plate is flipped upward to a position parallel to the middle of the back plate and placed between the two side plates of the back plate; when the vehicle-mounted folding table device is in an opened state, the table plate is flipped downward to a horizontal position, and the two limit pins form a limit contact with the front side of the table plate near the two sides.

2. The folding table device for special operation vehicles according to claim 1, characterized in that: Each set of shaft components with damping includes a pin, a damping plate I, a damping plate II, two wave washers, and a locking nut; The damping sheets I and II are alternately and are both installed on the pin shaft in an interference fit manner. Multiple damping sheets I and multiple damping sheets II constitute a damping sheet group, and two corrugated washers are installed on the pin shaft; The pins of the four groups of shaft assemblies with damping connected to the back plate are sequentially installed in the through holes on the corresponding upper connecting rod or the lower connecting rod and the through holes on the side of the back plate from the inside to the outside, and the pins and the side of the back plate are limitedly matched in the circumferential direction; the locking nut is screwed and installed on the external thread of the outer end of the pin, so that the two corrugated washers are pressed against the two ends of the damping plate group; the damping plate II and the through holes on the corresponding upper connecting rod or the through holes on the lower connecting rod form a limited fit in the circumferential direction, and the damping plate I and the through holes on the corresponding upper connecting rod or the through holes on the lower connecting rod form a clearance fit; The pins of the four groups of shaft assemblies with damping connected to the supporting seats are sequentially installed in the through holes on the corresponding upper connecting rod or lower connecting rod and the through holes on the corresponding supporting seats from the outside to the inside, and the pins are limitedly matched with the corresponding upper connecting rod or lower connecting rod in the circumferential direction; the locking nut is screwed and installed on the external thread on the inner end of the pin, so that the two corrugated washers are pressed against the two ends of the damping plate group; the damping plate II and the through holes on the corresponding supporting seat form a limited match in the circumferential direction, and the damping plate I and the through holes on the corresponding supporting seat form a clearance match.

3. The folding table device for special operation vehicles according to claim 2, characterized in that: A slotted cone-end positioning screw is axially installed on the edge of the inner thread hole of the locking nut, so that the locking nut is fixedly connected to the side edge of the back plate or the supporting seat.

4. The folding table device for special operation vehicles according to claim 1, characterized in that: The edge of the damping plate II is provided with a dovetail shaped protrusion, and the edge of the through hole matched with the damping plate II is provided with a dovetail groove cavity, and the dovetail shaped protrusion is embedded in the dovetail groove cavity, so that the two form a limited fit along the circumferential direction.

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