CN209186100U - A kind of Electric sofa infrared induction anti-pinch device - Google Patents

Abstract

The utility model relates to a kind of Electric sofa infrared induction anti-pinch devices, including main control module, for the infrared probe and temperature sensor of detection, the detection signal of main control module reception infrared probe, to control expansion plate stopping or the counteragent of sofa, main control module receives the detection signal of temperature sensor, and the sensitivity according to the temperature signal adjustment infrared probe detected.The utility model passes through the cooperation of temperature sensor, main control module, infrared control unit and heat-proof device, it can be according to the sensitivity of actual ambient temperature adjust automatically infrared probe, reduce influence of the environment temperature to infrared probe, the temperature of motor increases the interference detected to infrared probe when the heat-proof device being additionally provided with can effectively reduce electric pushrod operation.

Description

A kind of Electric sofa infrared induction anti-pinch device

Technical field

The utility model relates to a kind of Electric sofa, in particular to a kind of Electric sofa infrared induction anti-pinch device.

Background technique

With the raising of levels of substance, Electric sofa is more next as the popularity of a high-grade leisure household at home and abroad It is higher.But Electric sofa is in use, children or toy, which be pinched, presss from both sides dead case occasionally generation.This is because During sofa expansion plate is opened or packed up, if there is children or animal enter expansion plate region, there will be the danger being gripped to Danger.If this emergency situations cannot be handled in time to some handicapped, delay of response people, biggish thing may be led to Therefore therefore the anti-pinch device of Electric sofa is developed as a very urgent thing.

The anti-clamping method of Electric sofa chair is relatively easy at present.Common anti-pinch scheme includes following two: one is An anti-clamping plate is respectively installed in the outside of two link mechanisms of couch, and the limbs of people can be prevented to be externally entering link mechanism Partial region.Another kind is the connection that the junction between the expansion plate of couch and two sides connecting rod is used to spring and hinge Mode, when barrier is encountered in expansion plate contraction, expansion plate can rebound under the blocking of barrier, so that expansion plate will not crush People or toy.

Both schemes be disadvantageous in that can only protection setting anti-clamping plate or spring and hinge frame-type lines or Net form lines, for the neutral area between lines can not effective all standing, children or toy it is possible into this neutral gear Qu Zhong, to come to harm.On the other hand, both schemes must according to different sofa shape adjustments lay anti-clamping plate or Spring and hinge are unfavorable for producing in enormous quantities, and install complicated.

The anti-pinch device and anti-pinch technology of other equipment, as power windows mainly utilizes the pass of motor speed and electric current at present System is detected, and when equipment clips to people or object, revolving speed, the electric current of motor can mutate, and carries out anti-pinch processing according to this.But It is this scheme all not applicable for couch, due to Electric sofa configurations, electric pushrod motor is in the process of running The dynamic changes of revolving speed and electric current are different, it is necessary to the software program of anti-pinch device is adjusted for every a sofa, This scheme does not have general applicability.

Since structure is complicated for sofa, the push rod operation characteristic of different styles is also very different, and therefore, currently this is several Kind scheme can not effectively realize the anti-pinch protection of Electric sofa chair.

Utility model content

The technical problem to be solved by the present invention is to: provide that a kind of infrared probe sensitivity is adjustable, is effective against temperature Degree and motion structure block, the adjustable Electric sofa infrared induction anti-pinch device of detection angle.

The technical scheme adopted by the utility model to solve the technical problem is as follows:

A kind of Electric sofa infrared induction anti-pinch device is passed including main control module, the infrared probe for detection and temperature Sensor, main control module receive the detection signal of infrared probe, so that the expansion plate for controlling sofa stops or counteragent, master control mould Block receives the detection signal of temperature sensor, and the sensitivity according to the temperature signal adjustment infrared probe detected.

Further, the expansion plate of sofa is driven by electric pushrod, and main control module is built in control box, master control Module is adjusted the sensitivity of infrared probe by infrared control unit, temperature sensor and/or infrared control unit with Main control module is integrated in control box together or temperature sensor and/or infrared control unit are using external form and control Main control module connection in box processed.

For convenience of the detection angle of infrared probe is adjusted, further, infrared probe is mounted on by adjustment seat The bottom of expansion plate, adjustment seat include chassis and two side frames for being separately fixed at chassis two sides, and infrared probe is located at two sides Between frame, and the two sides of the shell of infrared probe are equipped with the shaft for the through slot being respectively clamped on two side frames, and shaft is in through slot It is fixed under the clamping of inner wall.Because infrared probe is mainly front and back deflection, therefore the detection angle mentioned in scheme is front and back search angle Degree.

Further, through slot opening width is less than shaft diameter.

Further, the part that shaft is clamped on through slot forms clamping part, and clamping part inner wall is matched with shaft outer wall, clamps Portion's opening width is less than shaft diameter.

Further, the two sidewalls of through slot opening are connected by fastener.

Further, between clamping part inner wall and shaft outer wall be equipped with cooperate and it is circumferentially equally distributed along shaft Several concaveconvex structures.

Further, concaveconvex structure includes the first bump of clamping part inner wall and the second bump of shaft outer wall, and One bump axially extends to through slot both ends along shaft, and the second bump axially extends to axial ends along shaft.

Further, shaft is equipped with the channel being connected to the shell inner cavity of infrared probe.

Further, infrared probe is one or more.

Further, infrared probe is three, and is separately mounted to the left side, centre and right side of expansion plate bottom, three Shaft axis on a infrared probe shell is parallel.An independent infrared probe for being mounted on expansion plate middle position, which will lead to, to be stretched The sensitivity of contracting plate peripheral position is lower, and three infrared probes for being distributed in three positions in expansion plate bottom left, center, right can be with All areas below covering expansion plate comprehensively, so that the remolding sensitivity under expansion plate everywhere is more balanced, elimination anti-pinch blind area.

It further include further by the electronic of sofa to reduce the electric pushrod influence that the motor feels hot to infrared probe The thermal insulation board that the motor of push rod is isolated with infrared probe.

Further, thermal insulation board is mounted on the main body rack of the sofa in front of motor, and thermal insulation board and motor are kept Certain distance.

Further, the barn door for blocking extraneous IR is installed, barn door includes intersection on the outside of infrared probe Fixed plate and side plate, fixed plate are located between expansion plate and the chassis of adjustment seat, and chassis, fixed plate and expansion plate pass through fastener It is threadedly coupled.Barn door is specially L shape, and L-shaped barn door can be installed simultaneously with adjustment seat, without separately setting peace on barn door Fill hole.

The beneficial effects of the utility model are:

The utility model passes through the cooperation of temperature sensor, main control module and infrared control unit, can be according to actual environment The sensitivity of temperature adjust automatically infrared probe reduces influence of the environment temperature to infrared probe.It is electronic on Electric sofa Thermal insulation board is installed between the motor and infrared probe of push rod, prevents motor temperature overheat from causing the false triggering of infrared probe.It adjusts Seat cooperates with the shaft on infrared probe shell, the detection angle of infrared probe can be adjusted on demand, to eliminate expansion plate Anti-pinch blind area.

Detailed description of the invention

Fig. 1 shows the structural schematic diagram of the Electric sofa with infrared induction anti-pinch device；

Fig. 2 shows the scheme of installation of infrared induction anti-pinch device；

Fig. 3 shows the explosive view of adjustment seat and infrared probe shell；

Fig. 4 shows the axonometric drawing of adjustment seat and infrared probe shell；

Fig. 5 shows the main view of Fig. 4；

Fig. 6 shows the bottom view of Fig. 4；

Fig. 7 shows the first form of through slot on the side frame of adjustment seat；

Fig. 8 shows second of form of through slot on the side frame of adjustment seat；

Fig. 9 shows the third form of through slot on the side frame of adjustment seat；

Figure 10 shows the 4th kind of form of through slot on the side frame of adjustment seat；

Figure 11 shows system connection block diagram.

In figure:

1- infrared probe, 11- shell, 12- shaft, 13- circular hole；

2- barn door；

3- controls box, 31- temperature sensor, 32 main control modules；

4- thermal insulation board；

5- sofa, 51- main body rack, 52- expansion bracket；

6- expansion plate；

7- adjustment seat, 71- chassis, 72- side frame, 73- through slot；

8- electric pushrod.

Specific embodiment

In order to make those skilled in the art more fully understand the technical solution of the utility model, with reference to the accompanying drawing and have The utility model is described in further detail for body embodiment.

As shown in Figure 1 and Figure 2, a kind of Electric sofa infrared induction anti-pinch device, including temperature sensor 31, main control module 32, infrared control unit and it is mounted on the infrared probe 1 of 5 expansion plate of sofa, 6 bottom.Temperature sensor 31 can and main control module 32 are integrated in control box 3 or temperature sensor 31 can also individually be placed outside control box 3 together, preferably molded-in in this example Scheme.Infrared control unit can be integrated in control box 3 together with main control module 32, and certain infrared control unit can also be single It is solely placed outside control box 3, for example, infrared control unit is integrated with infrared probe 1.After control box 3 is mounted on sofa 5 Portion.Main control module 32 is the prior art, and core is single-chip microcontroller, and infrared control unit selects the control core of model E931.96 Piece or with similar functions other control chips.This programme belongs to passive infrared detection scheme, the basic knot of infrared probe 1 Structure includes Fresnel filter lens (optical system) and infrared sensor.

Electric sofa is commonly provided with manipulation of switches, and manipulation of switches issues electric signal to main control module 32 to control electric pushrod 8 movement, expansion plate 6 are opened or are packed up under the driving of electric pushrod 8.Electric pushrod 8 is packed up in motion process, if infrared Probe 1 is triggered, then shows packing up there are people or toy in region in expansion plate 6, and main control module 32 receives triggering letter Number, so that controlling electric pushrod 8 makes the stopping of expansion plate 6 or counteragent.Temperature sensor 31 detects environment temperature, and will test To temperature signal be sent to main control module 32, main control module 32 passes through the infrared control list in control box 3 according to environment temperature Member adjusts the sensitivity of infrared probe 1 in real time, to reduce influence of the environment temperature to infrared probe 1.When environment temperature increases, The sensitivity of automatic adjustment height infrared probe 1；When environment temperature reduces, the sensitivity of infrared probe 1 is automatically turned down.

Infrared probe 1 can be according to different sofa 5 and anti-pinch demand, and using one or more, infrared probe 1 is also according to reality Border needs, and is mounted on the different location of sofa 5.The infrared probe 1 of this example is three, and is mounted on and is stretched by adjustment seat 7 The bottom of contracting plate 6, two of them infrared probe 1 are located at the left and right sides of 6 bottom front of expansion plate, another infrared probe 1 Positioned at the middle position of 6 bottom front of expansion plate.The range of the dotted line covering of 6 lower section of expansion plate is three infrared spies in Fig. 1 The range of first 1 detection.

Adjustment seat 7 (see Fig. 3, Fig. 4), including chassis 71 and side frame 72.Chassis 71 is screwed in 6 bottom of expansion plate On expansion bracket 52, side frame 72 is two and is respectively provided at 71 two sides of chassis, and chassis 71 and side frame 72 are made one through injection molding Body has the through slot 73 extended to chassis 71 on side frame 72.

1 shell 11 of infrared probe is located between two side frames 72.The two sides of the shell 11 of infrared probe 1 are equipped with and are respectively clamped into Shaft 12 on two side frames 72 in through slot 73, because the elastic force of side frame 72 itself acts on, clamping of the shaft 12 in 73 inner wall of through slot Lower fixation.The part that through slot 73 clamps shaft 12 forms clamping part, and clamping part inner wall is matched with 12 outer wall of shaft, and clamping part Opening width is less than the outer diameter of shaft 12.Shell 11 can be rotated with 12 axis around the shaft, to change the search angle of infrared probe 1 Degree.For the anti-pinch blind area for eliminating expansion plate 6, in advance by the infrared probe 1 of the left and right sides of sofa 5 to post deflection certain angle, It can according to need and adjust when in use.

Fig. 7, Fig. 8, Fig. 9, Figure 10 show four kinds of forms of through slot 73 on side frame 72.

As shown in fig. 7, the bottom wall of through slot 73 constitutes and the matched arc section of 12 outer wall of shaft (i.e. the inner wall of clamping part), it should The intersection of arc section and 73 side wall of through slot is clamping part opening, and only clamping part opening is less than 12 outer diameter of shaft, shaft 12 are just not easy to be detached from from through slot 73.At this point, the angle of the arc section is greater than 180 degree.

As shown in figure 8, the bottom wall of through slot 73 and two sidewalls constitute the up-side down triangle of lower ending opening, i.e., two sidewalls are from the bottom of close to One end of wall to one end that through slot 73 is open gradually tapers up, and is squeezed by the cooperation of bottom wall and two sidewalls, guarantees that shaft 12 will not Rotation, movement.Wherein, the distance between two straight lines (can only see two points on Fig. 8) contacted on two sidewalls with shaft 12 The as width of clamping part opening.

As shown in figure 9, some each formation of the two sidewalls of through slot 73 (is clamped with the matched arc section of 12 outer wall of shaft The inner wall in portion), at this point, two sections of circular arc upper end distances and lower end distance are respectively the upper opening width and under shed of clamping part inner wall Width, upper opening width and under shed width are respectively less than 12 outer diameter of shaft.

As shown in Figure 10, only a part of of one side wall is formed and the matched arc section of 12 outer wall of shaft, the other side through slot 73 There is a straight line portion to contact on wall with 12 outer wall of shaft, arc section upper end and straight wire spacing, arc section lower end and straight line spacing Upper opening width and under shed width from respectively clamping part, upper opening width and under shed width are respectively less than outside shaft 12 Diameter.

Shaft 12 rotates in through slot 73 when in order to avoid using, and is equipped between 73 inner wall of 12 outer wall of shaft and through slot mutual The concaveconvex structure of cooperation, which is several and is uniformly distributed along the axial direction of shaft 12, sees Fig. 3, Fig. 7.Bumps knot Structure includes the second bump of 12 outer wall of the first bump and shaft of 73 inner wall of through slot, and the first bump is axially prolonged along shaft 12 73 both ends of through slot are extended to, the second bump axially extends to axial ends along shaft 12.First bump is depressions or protrusions Portion, the second bump are and the matched lug boss of the first bump or recessed portion.

To guarantee the tight fit between shaft 12 and side frame 72, it is logical to be equipped with closing for the opening of through slot 73 on side frame 72 The bolt and nut component that slot 73 is open, the opening of through slot 73 are shunk under the cooperation of bolt and nut component to clamping rotating shaft 12.

The Fresnel filter lens and infrared sensor of infrared probe 1 are each provided in the cavity of 1 shell 11 of infrared probe, outside There is the channel being connected to 11 cavity of shell, shell 11 is formed by two parts split (see Fig. 3), even in the shaft 12 of 11 two sides of shell It connects the channel that the conducting wire of infrared sensor is each passed through in two shafts 12 and is connect with main control module 32.

The outside of infrared probe 1 is equipped with the barn door 2 for blocking extraneous IR.Barn door 2 is for three and right respectively Three infrared probes 1 are answered, two of them barn door 2 is respectively provided at the left side left of infrared probe 1 and the right side of right side infrared probe 1 Side, another barn door 2 are located at the front of intermediate infrared probe 1.Barn door 2 is L shape, be divided into be made integrated fixed plate and Side plate, fixed plate are located between chassis 71 and expansion plate 6.When installation, first fixed plate upper installing hole and 6 bottom of expansion plate are installed Hole correspondence, then corresponds to the mounting hole in fixed plate for the mounting hole on 7 chassis 71 of adjustment seat, and screw is passed through chassis 71, is consolidated Fixed board simultaneously cooperates with 6 upper installing hole of expansion plate, installs while realizing adjustment seat 7 and barn door 2, without another on barn door 2 Mounting hole is opened up outside.

To prevent in electric pushrod 8 in continuous operation, 8 motor temperature of electric pushrod overheats the mistake for causing infrared probe 1 Triggering, can be arranged the thermal insulation board 4 of plastic material, which is mounted on electronic push away by screw between motor and expansion plate 6 The front of 8 motor of bar.

Motor is usually located at the bottom middle position of sofa 5, and when expansion plate 6 is packed up, intermediate infrared probe 1 is by motor Maximum is influenced, by the heat-blocking action of the thermal insulation board 4 between motor and intermediate infrared probe 1, it is infrared to three to reduce motor The influence of probe 1.

In this example, using 6 position of expansion plate of Electric sofa 5 as the front side of sofa 5,5 position of back of Electric sofa are made For the rear side of sofa 5.Sofa 5 includes main body rack 51 and the expansion bracket 52 for realizing 6 expanding-contracting action of expansion plate, and expansion plate 6 is installed In the front end of expansion bracket 52, adjustment seat 7, barn door 2 are installed in the bottom of expansion plate 6.

Above embodiment does not constitute the restriction to the technical solution protection scope.It is any in above embodiment Spirit and principle within made modifications, equivalent substitutions and improvements etc., should be included in the technical solution protection scope it It is interior.

Claims (11)

1. a kind of Electric sofa infrared induction anti-pinch device, it is characterised in that: including main control module (32), for the infrared of detection Probe (1) and temperature sensor (31), main control module (32) receives the detection signal of infrared probe (1), to control sofa (5) Expansion plate (6) stop or counteragent, main control module (32) receives the detection signal of temperature sensor (31), and according to detection The sensitivity for temperature signal adjustment infrared probe (1) arrived.

2. Electric sofa infrared induction anti-pinch device according to claim 1, it is characterised in that: sofa (5) are stretched Contracting plate (6) is driven especially by electric pushrod (8), and main control module (32) is built in control box (3), main control module (32) The sensitivity of infrared probe (1) is adjusted by infrared control unit, temperature sensor (31) and/or infrared control unit Interior control box (3) or temperature sensor (31) and/or infrared control unit are integrated in together with main control module (32) using outer The form set is connect with the main control module (32) in control box (3).

3. Electric sofa infrared induction anti-pinch device according to claim 1 or 2, it is characterised in that: the infrared probe (1) bottom of expansion plate (6) is mounted on by adjustment seat (7), the adjustment seat (7) includes chassis (71) and is separately fixed at bottom Two side frames (72) of frame (71) two sides, the infrared probe (1) are located between two side frames (72), infrared probe (1) shell (11) two sides are equipped with the shaft (12) for being respectively clamped into through slot (73) on two side frames (72), and the shaft (12) is in through slot (73) It is fixed under the clamping of inner wall.

4. Electric sofa infrared induction anti-pinch device according to claim 3, it is characterised in that: pressed from both sides on the through slot (73) The part for holding shaft (12) forms clamping part, and the clamping part inner wall is matched with shaft (12) outer wall, and clamping part opening width is small In shaft (12) diameter.

5. Electric sofa infrared induction anti-pinch device according to claim 3, it is characterised in that: through slot (73) opening The two sidewalls at place are connected by fastener.

6. Electric sofa infrared induction anti-pinch device according to claim 4, it is characterised in that: the clamping part inner wall and It is equipped with and cooperates and along the circumferential equally distributed several concaveconvex structures of shaft (12) between shaft (12) outer wall.

7. Electric sofa infrared induction anti-pinch device according to claim 3, it is characterised in that: set on the shaft (12) There is the channel being connected to shell (11) inner cavity of infrared probe (1).

8. Electric sofa infrared induction anti-pinch device according to claim 3, it is characterised in that: the infrared probe (1) For one or more.

9. Electric sofa infrared induction anti-pinch device according to claim 3, it is characterised in that: the infrared probe (1) It is three, and is separately mounted to left side, centre and the right side of expansion plate (6) bottom, on three infrared probe (1) shell (11) Shaft (12) axis it is parallel.

10. Electric sofa infrared induction anti-pinch device according to claim 2, it is characterised in that: further include by sofa (5) The thermal insulation board (4) that the motor of upper electric pushrod (8) is isolated with infrared probe (1).

11. Electric sofa infrared induction anti-pinch device according to claim 3, it is characterised in that: the infrared probe (1) Outside the barn door (2) for blocking extraneous IR is installed, the barn door (2) includes the fixed plate and side plate of intersection, institute It states fixed plate to be located between expansion plate (6) and the chassis (71) of adjustment seat (7), the chassis (71), fixed plate and expansion plate (6) It is connected by fastener.