CN202820157U - Health care desk with automatically changed inclined angle - Google Patents

Abstract

The utility model discloses a health care table with automatically changing inclination angle, which comprises a table board; a fixing device and a lifting device; the front part of the table board is connected with the top of the fixing device in rotation; The top of the top part is movably connected with the rear part of the desktop board; the fixed part is located under the desktop board, and the fixed part is movably connected with the lifting part, which is used to drive the lifting part to perform a lifting action. The utility model can change the inclination angle of the desktop board only by controlling the lifting action of the lifting part, so that the user's head and eyes can move together with the desktop board during use, so that the user's cervical spine fatigue and eyesight Fatigue can be adjusted to a limited extent, avoiding users who are prone to cervical spondylosis and/or aggravating the approximate degree of eyes due to sitting at a desk for a long time. In addition, the utility model also overcomes the object-oriented limitation of the liquid crystal display automatic lifting health care stand in the prior art.

Description

A health care table with automatically changing tilt angle

technical field

The utility model relates to a table, in particular to a health care table with an automatic change in inclination angle.

Background technique

The table is one of the indispensable furniture products in our life. It is generally composed of a table top and table legs, and is mainly divided into two types: foldable and non-foldable. The height and angle of inclination of the desks in the prior art are generally fixed, which causes the fatigue of the cervical spine of many copywriters to be unimproved when they are working. In order to overcome the deficiencies in the desks of the prior art, a liquid crystal display automatic lifting health care frame has appeared in the prior art, which can adjust and improve the user's cervical spine fatigue by adjusting the height. However, the users of this liquid crystal display automatic lifting health care stand are limited to computer users, causing other copywriters, such as primary and middle school students, to adopt the desks of the prior art to adjust and improve their cervical fatigue. These copywriters often suffer from cervical spondylosis due to sitting at desks for a long time and poor sitting posture for a long time, which seriously affects work or study and life.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a health care table with an automatic change in inclination angle, which can regulate the cervical spine and visual fatigue of the vast number of desk workers.

The technical solution adopted by the utility model to solve its technical problems is: a health care table with an automatic tilt angle change, including a table top; also includes a fixing device and a lifting device; The device includes a lifting part and a fixing part, the top of the lifting part is movably connected with the rear part of the desktop board;

The lifting part includes a lifting sleeve with internal threads, and the fixed part includes a fixed sleeve, a screw, a motor and a control unit; the top of the lifting sleeve is movably connected to the rear of the desktop, and the lifting sleeve can move up and down to slide Covered in the fixed sleeve, the screw rod is rotatably installed in the fixed sleeve and screwed with the internal thread of the lifting sleeve. The screw rod is driven to rotate by a motor driven by the control unit.

The lifting sleeve, the fixing sleeve and the screw rod are respectively two; the tops of the two lifting sleeves are respectively connected with the left side and the right side of the rear part of the desktop board; The right side, and cooperate with the corresponding lifting sleeve and screw rod respectively.

The left and right sides of the back of the desktop are respectively provided with a sliding groove, and the tops of the two lifting sleeves slide into the corresponding sliding grooves respectively, and the tops of the two lifting sleeves are respectively matched alternately through the lifting action. at the two ends of the corresponding sliding slots, so as to change the inclination angle of the desktop board.

The fixing device includes a front side board, the front end of the desktop board is connected to the top of the front side board in rotation; it also includes a base, the bottom end of the front side board is fixedly connected to the top end of the base; the fixing part is installed on the base.

The control unit includes an upstroke limit switch and a downstroke limit switch for limiting the lifting sleeve, a drive module for driving the motor, a power supply module and a control module; the upstroke limit switch and the downstroke limit switch The travel limit switches are respectively installed on one of the fixed sleeves, the outputs of the up travel limit switch and the down travel limit switch are respectively connected to the input of the control module, the control module is powered by the power supply module, and the output of the control module is connected to The drive module, the motor is connected with the power supply module through the drive module.

The motor is one, and it is a bidirectional motor, and the motor is respectively connected to the two screw rods through two transmission mechanisms; the drive module includes a relay, and the relay has at least two sets of contacts, and each set of contacts includes One moving contact and two static contacts; the output of the control module is connected to the coil input end of the relay, and the two moving contacts of the two sets of contacts of the relay are respectively connected to the positive pole and the negative pole of the power supply module, The four static contacts of the two groups of contacts of the relay are cross-connected. connected to the negative input.

The motor is one, and is a two-way motor, which is respectively connected to the two screw rods through two transmission mechanisms; the drive module includes two relays, and the two relays have at least one set of contacts, each set The contacts include a moving contact, a normally open contact and a normally closed contact; the output of the control module is connected to the coil input terminals of the two relays, and the moving contacts of one group of contacts of the two relays are respectively connected to the power supply The positive pole of the power supply of the module is connected with the negative pole of the power supply, the normally open contact and the normally closed contact of the group of contacts of one relay are respectively connected with the positive power input terminal and the negative power input terminal of the motor, and the The normally open contact and the normally closed contact of the group of contacts are respectively connected to the negative input end of the power supply and the positive input end of the power supply of the motor.

The control module includes a NE555 chip, a first capacitor, a second capacitor, a first resistor, a second resistor, a third resistor, and a fourth resistor; the power supply module includes a power supply; one end of the upstroke limit switch passes through The fourth resistor is connected to the second pin of the NE555 chip, and the other end of the upstroke limit switch is connected to the positive pole of the power supply and the eighth pin of the NE555 chip respectively; the positive pole and the negative pole of the power supply constitute the power supply respectively. The positive pole of the power supply and the negative pole of the power supply of the module, the positive pole of the power supply is connected to the 4th pin of the NE555 chip, and the negative pole of the power supply is grounded; one end of the down travel limit switch is connected to the 8th pin of the NE555 chip, and the down The other end of the travel limit switch is connected to the 6th pin of the NE555 chip through the second resistor; the 5th pin of the NE555 chip is grounded through the first capacitor, and the 6th pin of the NE555 chip is also grounded through the first resistor; the second The capacitor and the third resistor are connected in parallel between the second pin of the NE555 chip and the ground; the first pin of the NE555 chip is grounded; the third pin of the NE555 chip is connected to one of the coil input ends of the relay, so The other coil input terminal of the relay is grounded.

The transmission mechanism includes a transmission shaft and a bevel gear reversing reduction device; the rotating shaft of the motor is in transmission connection with the screw through the transmission shaft and the bevel gear reversing reduction device in turn.

The health care table with automatic tilt angle change of the utility model, when the lifting part moves up, the rear part of the desktop board is pushed up by it and rotates upward relative to the fixing device; when the lifting sleeve rises to the highest position, the desktop board goes up Rotate to the preset angle; when the lifting part makes a downward movement, the back of the tabletop also gradually descends; when the lifting sleeve drops to the lowest position, the back of the tabletop drops to be flush with its front, making the tabletop in a horizontal position. In this way, by controlling the lifting action of the lifting part, the inclination angle of the desktop board can be changed, so that the user's head and eyes can move together with the desktop board during use, so that the user's cervical spine fatigue and visual fatigue can be relieved. effective regulation.

The beneficial effect of the utility model is that compared with the prior art, it also includes a fixing device and a lifting device, and the front part of the desktop is connected to the top of the fixing device in rotation, and the lifting device includes a lifting part and a fixing part, and the top of the lifting part It is movably connected with the rear of the desktop board; the fixed part is located under the desktop board, and the fixed part is movably connected with the lifting part, which is used to drive the lifting part to perform lifting movements; so that the utility model only needs to control the lifting action of the lifting part to achieve Change the inclination angle of the desktop so that the user's head and eyes can move together with the desktop during use, so that the user's cervical fatigue and visual fatigue can be adjusted to a limited extent, preventing the user from sitting at the desk for a long time And prone to cervical spondylosis and/or aggravating the approximate degree of the eyes. In addition, the utility model also overcomes the object-oriented limitation of the prior art liquid crystal display automatic lifting health care rack; the desktop panel of the utility model only changes the inclination angle without changing the overall height of the desktop panel, so The user feels more comfortable during use; as a preference, the utility model adopts an electric control method to control the automatic change of the inclination angle of the desktop board, and has the characteristics of sensitive control and convenient operation.

The utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments; a health care table with an automatic tilt angle change of the utility model is not limited to the embodiments.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is the functional block diagram of the motor control part of the utility model;

Fig. 3 is a schematic diagram of circuit connection corresponding to the utility model in Fig. 2;

Fig. 4 is a schematic side view of the utility model.

Detailed ways

Embodiment, please refer to shown in Fig. 1, a kind of inclination angle automatically changes health care table of the present utility model, comprises desktop board 1, fixing device and lifting device; The front part of desktop board 1 is connected with the top rotation of fixing device; The device includes a lifting part and a fixing part, the top of the lifting part is movably connected with the rear part of the desktop board;

As a preference, the lifting part includes two lifting sleeves 3 with internal threads, and the fixing part includes two fixing sleeves 5, two screw rods 4, a motor 2 and a control unit; The left side and the right side of the rear part of the board 1 are movably connected, and the two fixed sleeves are respectively located on the left side and the right side under the rear part of the desktop board. The two screw rods 4 are rotatably installed in the corresponding fixed sleeves 5 respectively, and the two screw rods 4 are screwed with the internal threads of the two lifting sleeves 3 respectively, and the two screw rods 4 are driven to rotate by the motor 2, and the motor 2 is driven by the control unit drive.

As a preference, in the present invention, a sliding groove 11 is arranged longitudinally on the left side and the right side of the rear back of the desktop board 1, so that the tops of the two lifting sleeves 3 are slid into the corresponding sliding grooves 11 respectively. , the tops of the above two lifting sleeves can be flexibly connected to the rear of the desktop board 1 respectively. The top ends of the two lifting sleeves 3 are alternately matched with the two ends of the corresponding sliding grooves 11 through the lifting action, so as to change the inclination angle of the desktop board 1 .

As a preference, the above-mentioned fixing device includes a front side plate 7, and the front end of the desktop plate 1 is rotationally connected with the top end of the front side plate 7, specifically between the front end edge of the desktop plate 1 and the top edge of the front side plate 7. A rotating shaft 71 is installed between them, so that the desktop board 1 can rotate up and down around the rotating shaft 71. At this moment, the utility model also includes two bases 10, and these two bases 10 are respectively positioned at the left side and the right side below the desktop board, and the bottom end of the front side plate 7 is affixed to the top of these two bases 10, with This brakes the front side plate 7; the above two fixing sleeves 5 are installed on the two bases 10 respectively. Here, the bottom end of the front side panel can also be directly extended to the ground; the above-mentioned fixing device can also be realized by using other structures, if a bracket structure is used, the desktop board can be connected to the bracket structure in rotation.

As a preference, please refer to Fig. 1 and Fig. 2, the above-mentioned control unit includes an upstroke limit switch 61 and a downstroke limit switch 62 for limiting the above-mentioned two lifting sleeves 3, and a drive motor Working drive module 63, power supply module 64 and control module 6; Upstroke limit switch 61 and downstroke limit switch 62 are respectively installed on the sidewall top and bottom of one of the fixed sleeves, the upstroke limit switch 61 and the downstroke limit switch The output of travel limit switch 62 is connected to the input of control module 6 respectively, and control module 6 is installed on the sidewall of wherein a fixed sleeve, and it is powered by power supply module 64, and the output of this control module 6 is connected to drive module 63, and motor 2 It is connected with the power supply module 64 through the drive module 63 .

As a preference, the above-mentioned motor 2 is a bidirectional motor, and the motor 2 is connected to the two screw rods 4 through two transmission mechanisms; as shown in Figure 3, the above-mentioned drive module 63 includes a relay J1, which has two sets Contacts (of course, there can also be more than two sets of contacts), one set of contacts includes a moving contact a and two static contacts b, c, and the static contact b is a normally open contact, and the static contact Point c is a normally closed contact; another group of contacts includes a moving contact d and two static contacts e, f, and the static contact e is a normally closed contact, and the static contact f is a normally open contact; The output of the above-mentioned control module 6 is connected to the coil input end of the relay J1, and the two moving contacts a and d of the relay J1 are respectively connected to the positive pole and the negative pole of the power supply module 64, and the four static contacts of the relay J1 b, c, e, f are cross-connected (that is, the static contact b of the relay J1 is connected with the static contact f, and the static contact c of the relay J1 is connected with the static contact e), the two relays The static contacts e and f are respectively connected to the positive input end of the power supply and the negative input end of the power supply of the motor 2 .

The drive module 63 may also include two relays, the two relays respectively have a set of contacts (of course, can also have more than one set of contacts), the set of contacts includes a movable contact, a normally open contact and a normally closed contact; the output of the control module is connected to the coil input terminals of the two relays, and the moving contacts of the two relays are respectively connected to the positive pole of the power supply and the negative pole of the power supply, and the normally open contact of one of the relays is connected to the negative pole of the power supply. The normally closed contacts are respectively connected to the positive power input and the negative power input of the motor, and the normally open and normally closed contacts of the other relay are respectively connected to the negative power input and the positive power input of the motor.

Alternatively, the above driving module 63 may also be realized by using a contactor.

As a preference, as shown in FIG. 3, the control module 6 includes NE555 chip IC1, a first capacitor C1, a first resistor R1, a second resistor R2, a second capacitor C2, a third resistor R3 and a fourth resistor R4; The power supply module 64 includes a power supply E1, which is a DC power supply. One end of the upstroke limit switch 61 is connected to the second pin of the NE555 chip IC1 through the fourth resistor R4, and the other end of the upstroke limit switch 61 is respectively connected to the positive pole of the power supply E1 and the eighth pin of the NE555 chip IC1 The positive pole and the negative pole of the power supply E1 constitute the positive pole and the negative pole of the power supply module 10 respectively, the positive pole of the power supply E1 is connected to the 4th pin of the NE555 chip IC1, and the negative pole of the power supply E1 is grounded; the downstroke limit switch 62 One end of the NE555 chip IC1 is connected to the 8th pin, and the other end of the downstroke limit switch 7 is connected to the 6th pin of the NE555 chip IC1 through the second resistor R2; the fifth pin of the NE555 chip IC1 is connected to the first capacitor C1 Grounding, the sixth pin of NE555 chip IC1 is also grounded through the first resistor R1; the second capacitor C2 and the third resistor R3 are connected in parallel between the second pin of NE555 chip IC1 and the ground; the first pin of NE555 chip IC1 The pin is grounded; the third pin of NE555 chip IC1 is connected to one of the coil input terminals of the above-mentioned relay J1, and the other coil input terminal of the above-mentioned relay J1 is grounded.

As a preference, the above-mentioned transmission mechanism includes a transmission shaft 8 and a bevel gear reversing deceleration device 9; wherein, the bevel gear reversing deceleration device of each transmission mechanism is respectively installed on a fixed sleeve 5, and the rotating shaft of the motor 2 passes through the transmission The shaft 8 and the bevel gear reversing reduction device 9 are connected with the screw rod 4 in transmission.

A health care table with an automatic tilt angle change of the utility model, its NE555 chip IC1 and its peripheral circuits form a bistable circuit, the first pin of the NE555 chip IC1 is the ground terminal, the second pin is the trigger terminal, and the third pin is the trigger terminal. The pin is the output terminal, the 4th pin is the reset terminal, the 5th pin is the control voltage terminal, the 6th pin is the reset lock terminal, the 7th pin is the discharge terminal, and the 8th pin is the power supply voltage terminal. The working process of the utility model includes a descending process and a rising process. When descending, the two screw rods 4 respectively drive the corresponding lifting sleeves 3 to move downward under the drive of the motor 2. When each lifting sleeve 3 falls in place, the downstroke limit switch 62 is disconnected, the voltage of pin 6 of NE555 chip IC1 drops, and the voltage of pin 3 of NE555 chip IC1 rises, so that the two moving contacts a and d of relay J1 are respectively connected to the corresponding static contacts b and b. When e is closed, the motor 2 changes direction, and the two lifting sleeves 3 are driven to rise by the two screw rods 4; the downstroke limit switch 62 resets. When the two lifting sleeves 3 are respectively raised to their respective positions, the upper stroke limit switch 61 is closed, so that the voltage of the second pin of NE555 chip IC1 rises, and the voltage of the third pin of NE555 chip IC1 drops, so that the two pins of relay J1 The movable contacts a, d are respectively closed with the corresponding static contacts c, f, then the motor 2 changes direction, and the two lifting sleeves 3 are driven down by the two screw rods 4; the upper travel limit switch 61 is reset. Repeating the cycle like this can realize the automatic lifting process of the two lifting sleeves 3 .

A health care table with automatically changing tilt angle of the utility model, as shown in Figure 4, when the two lifting sleeves 3 are lowered to the lowest position, the tops of the two lifting sleeves 3 are respectively located at the front ends of the two sliding grooves 11 of the desktop board , at this moment, the desktop board 1 is in a horizontal state. When the two lifting sleeves 3 are driven by the motor 2 and the screw rod 4 to move up, the two lifting sleeves 3 will gradually raise the rear of the tabletop 1, so that the tabletop 1 will gradually rotate upwards around the rotating shaft 71; in addition, The tops of the two lifting sleeves 3 slide respectively along the rear portions of the corresponding sliding grooves 11; At this time, the rear portion of the desktop board 1 is raised to the highest position, so that the entire desktop board 1 is in an inclined state, and the inclination angle is 30°. In this way, by cyclically controlling the automatic lifting process of the two lifting sleeves 3, the inclination angle of the table top 1 can be automatically changed.

The health care table with automatic tilt angle change of the utility model can make the user's head and eyes move together with the desktop panel as the tilt angle of the desktop panel changes during the user's use, so as to protect the user's cervical spine. Fatigue and visual fatigue play a regulating role, avoiding users from easily suffering from cervical spondylosis and/or aggravating the approximate degree of eyes due to long-term sitting at a desk.

The above-mentioned embodiments are only used to further illustrate a health care table with automatically changing tilt angles of the present invention, but the present invention is not limited to the embodiments, any simple modification made to the above embodiments according to the technical essence of the present invention, Equivalent changes and modifications all fall within the protection scope of the technical solution of the utility model.

Claims (10)

1. A health care table with an automatic change in tilt angle, comprising a tabletop; It is characterized in that: it also includes a fixing device and a lifting device; the front part of the tabletop is connected to the top of the fixing device in rotation; the lifting device includes a lifting part and a fixing part, The top of the lifting part is movably connected with the rear part of the desktop board; the fixed part is located under the desktop board, and the fixed part is movably connected with the lifting part, and is used to drive the lifting part to perform lifting action. 2. The health care table with automatically changing inclination angle according to claim 1, characterized in that: the lifting part includes a lifting sleeve with an internal thread, and the fixing part includes a fixing sleeve, a screw, a motor and a control unit; The top end is movably connected with the rear of the tabletop, the lifting sleeve can slide up and down on the fixed sleeve, the screw is rotatably mounted on the fixed sleeve, and is screwed with the inner thread of the lifting sleeve, and the screw is driven by a motor Rotate, the motor is driven by the control unit. 3. The health care table with automatically changing inclination angle according to claim 2, characterized in that: there are two lifting sleeves, fixed sleeves and screw rods respectively; and the right side are movably connected; the two fixed sleeves are respectively located on the left side and the right side under the desktop board, and are matched with corresponding lifting sleeves and screw rods respectively. 4. The health care table with automatically changing inclination angle according to claim 3, characterized in that: the left side and the right side of the rear back of the desktop board are respectively provided with a sliding groove, and the tops of the two lifting sleeves are respectively sliding sleeves In the corresponding sliding grooves, the top ends of the two lifting sleeves are alternately matched with the two ends of the corresponding sliding grooves through lifting action, so as to change the inclination angle of the table top. 5. The health care table with automatically changing inclination angle according to claim 1, characterized in that: said fixing device comprises a front side plate, and the front end of said desktop plate is connected to the top of the front side plate in rotation; it also includes a base , the bottom end of the front side plate is fixedly connected to the top end of the base; the fixing part is installed on the base. 6. The health care table with automatically changing inclination angle according to claim 3, characterized in that: the control unit includes an upstroke limit switch and a downstroke limit switch for limiting the lifting sleeve, A drive module, a power supply module and a control module for driving the motor; the upstroke limit switch and the downstroke limit switch are respectively installed in one of the fixed sleeves, and the outputs of the upstroke limit switch and the downstroke limit switch are respectively connected to The input to the control module, the control module is powered by the power supply module, the output of the control module is connected to the drive module, and the motor is connected to the power supply module through the drive module. 7. The health care table with automatically changing inclination angle according to claim 6, characterized in that: the motor is one, and it is a bidirectional motor, and the motor is respectively connected to the two screw rods through two transmission mechanisms; The module includes a relay, the relay has at least two groups of contacts, each group of contacts includes a moving contact and two static contacts; the output of the control module is connected to the coil input end of the relay, and two groups of the relay The two moving contacts of the contacts are respectively connected to the positive pole and the negative pole of the power supply module, the four static contacts of the two sets of contacts of the relay are cross-connected, one of the two sets of contacts of the relay The two static contacts of the contact are respectively connected with the positive input end of the power supply and the negative input end of the power supply of the motor. 8. The health care table with automatically changing inclination angle according to claim 6, characterized in that: the motor is one, and it is a two-way motor, and the motor is respectively connected to the two screw rods through two transmission mechanisms; The module includes two relays, the two relays respectively have at least one set of contacts, and each set of contacts includes a movable contact, a normally open contact and a normally closed contact; the output of the control module is connected to the two relays The coil input terminal of the two relays, the moving contacts of one group of contacts of the two relays are respectively connected to the positive pole and negative pole of the power supply module, and the normally open contact and normally closed contact of the group of contacts of one of the relays are respectively connected to The positive input terminal of the power supply of the motor is connected to the negative input terminal of the power supply, and the normally open contact and the normally closed contact of the group of contacts of the other relay are respectively connected to the negative input terminal of the power supply and the positive input terminal of the power supply of the motor. connect. 9. The health care table according to claim 7 or 8, characterized in that: the control module includes a NE555 chip, a first capacitor, a second capacitor, a first resistor, a second resistor, a third resistor and The fourth resistor; the power supply module includes a power supply; one end of the upper stroke limit switch is connected to the 2nd pin of the NE555 chip through the fourth resistor, and the other end of the upper stroke limit switch is respectively connected to the positive pole of the power supply , the 8th pin of the NE555 chip is connected; the positive pole and the negative pole of the power supply constitute the positive pole and the negative pole of the power supply module respectively, the positive pole of the power supply is connected to the 4th pin of the NE555 chip, and the negative pole of the power supply is grounded ; One end of the downstroke limit switch is connected to the 8th pin of the NE555 chip, and the other end of the downstroke limit switch is connected to the 6th pin of the NE555 chip through a second resistor; the 5th pin of the NE555 chip Ground through the first capacitor, and the sixth pin of the NE555 chip is also grounded through the first resistor; the second capacitor and the third resistor are connected in parallel between the second pin of the NE555 chip and the ground; the first pin of the NE555 chip Grounding; the third pin of the NE555 chip is connected to one of the coil input terminals of the relay, and the other coil input terminal of the relay is grounded. 10. The health care table with automatically changing inclination angle according to claim 7 or 8, characterized in that: the transmission mechanism includes a transmission shaft and a bevel gear reversing reduction device; the rotating shaft of the motor passes through the transmission shaft and the umbrella gear in turn The gear reversing reduction device is in drive connection with the screw rod.

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