Photoelectric position sensor and electric appliance

Abstract

The utility model discloses a photoelectric position sensor and an electric appliance, and the photoelectric position sensor comprises a first cover body which is provided with a first chute; the second cover body covers the first cover body and is provided with a second inclined groove, the second inclined groove and the first inclined groove form an inner cavity, the two sides of the second inclined groove are provided with a first mounting groove and a second mounting groove respectively, the first mounting groove is provided with a first opening groove communicated with the first inclined groove, the second mounting groove is provided with a second opening groove communicated with the first inclined groove, and the first opening groove is provided with a second opening groove communicated with the second inclined groove. The second opening groove corresponds to the first opening groove in position, a transmitting tube is arranged in the first mounting groove, a receiving tube is arranged in the second mounting groove, and a ball is arranged in the inner cavity; when the electric appliance is used in an inverted mode, the balls abut against the inclined faces of the first inclined grooves in the first inclined grooves, the positions of the balls can be changed through movement of the inclined faces of the first inclined grooves, and therefore the electric appliance can be used in an upright mode and can also be used in an inverted mode, and the problem that the positions can not be accurately changed when a conventional electric appliance is inverted is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of sensor especially relates to a photoelectric sensor and electric appliance. BACKGROUND

[0002] Photoelectric sensor is a kind of sensor using photoelectric effect to convert optical signal into electrical signal, is widely used in industrial automation, robot, security and protection, environmental monitoring, medical diagnosis and treatment, intelligent transportation and consumer electronics etc. Photoelectric sensor includes opposite type sensor, reflective sensor, diffuse reflection sensor, infrared sensor etc. The working principle of opposite type sensor is: transmitter sends a beam of light, and light beam passes through the measured object and reaches receiver. When the measured object appears, it will block the light beam, and cause the light intensity in receiver to decrease. Sensor measures the change of light intensity in receiver to determine whether there is target object and its position and shape information.

[0003] Common ironing products or electric appliances (such as electric iron) need to determine its placement state or position state frequently, which is beneficial for users to know the working state of the product, and then use the product or electric appliance more safely.

[0004] At present, the position sensor for determining the placement state or position state of ironing products or electric appliances usually uses a ball opposite type sensor, which includes a ball switch, a transmitting tube and a receiving tube. The traditional opposite type sensor is internally provided with a rolling groove, and the ball is arranged in the rolling groove. However, since the existing opposite type sensor is only provided with a single rolling inclined groove, a cavity with a single inclined surface is formed in the sensor. When the electric appliance is used in a normal direction, the ball is in contact with the inclined surface of the rolling inclined groove, and the ball moves to change the position by the design of the inclined surface, so as to block and separate the infrared light between the transmitting tube and the receiving tube. However, when the electric appliance is inverted, the ball is in contact with other flat surfaces. Since the ball cannot roll on the inclined surface, the position information of the sensor may not be accurately transmitted, which leads to the shortcoming that the inverted use cannot be achieved. SUMMARY

[0005] In order to overcome the shortcoming that the ball is in contact with other flat surfaces when the electric appliance is inverted, the ball cannot roll on the inclined surface, and the position information of the sensor may not be accurately transmitted, which leads to the shortcoming that the inverted use cannot be achieved.

[0006] First aspect

[0007] The utility model provides a photoelectric position sensor, which comprises:

[0008] The first cover body is provided with a first inclined groove.

[0009] Second cover body, with first cover body cover, is equipped with second chute, second chute forms inner chamber with first chute, first installation groove and second installation groove are equipped with respectively on both sides of second chute, first installation groove has first opening groove which is communicated with first chute, second installation groove has second opening groove which is communicated with first chute, the position of second opening groove corresponds with first opening groove, the inner of first installation groove is equipped with emission tube, the inner of second installation groove is equipped with receiving tube, and the inner of inner chamber is equipped with ball.

[0010] Optionally, the first chute is provided with a first light blocking ear and a second light blocking ear on both sides thereof, the first light blocking ear corresponds in position to the first opening groove, a first light transmission hole is left between the first light blocking ear and the first opening groove, and the second light blocking ear corresponds in position to the second opening groove, a second light transmission hole is left between the second light blocking ear and the second opening groove.

[0011] Optionally, the emission tube is provided with an emission head, the emission head is located in the first light transmission hole, the shape of the first light transmission hole corresponds to the shape of the emission head, the receiving tube is provided with a receiving head, the receiving head is located in the first light transmission hole, and the shape of the second light transmission hole corresponds to the shape of the receiving head.

[0012] Optionally, the first cover body is provided with a plurality of positioning holes, the second cover body is provided with a plurality of positioning columns, and the positioning columns correspond one by one to the positioning holes.

[0013] Optionally, the bottom angle of the first chute is a 7-10° bevel, the angles of both sides of the first chute are 7-10° bevels, the bottom angle of the second chute is a 7-10° bevel, and the angles of both sides of the second chute are 7-10° bevels.

[0014] Optionally, the side of the first opening groove is provided with a blocking edge, and the side of the second opening is provided with a blocking edge.

[0015] Optionally, the emission tube is provided with a pin, the receiving tube is provided with a pin, the second cover body is provided with a through hole, and the pins pass through the through hole.

[0016] Optionally, the through hole of the second cover body is provided with a sealing groove, and the sealing groove is provided with sealing glue.

[0017] Optionally, the bottom of the second cover body is provided with an angle adjusting column.

[0018] Second aspect

[0019] The utility model provides a kind of electric appliance, including the photoelectric position sensor of first aspect.

[0020] The utility model discloses a beneficial effect is: in the first cover on the first inclined groove is set up, in the second cover second inclined groove, in the both sides of second inclined groove set up first installation groove and second installation groove respectively, install the launching tube in the first installation groove, install the receiving tube in the second installation groove, set up the first opening groove that communicates with the first inclined groove on the first installation groove, set up the second opening groove in the second installation groove, and the position of first opening groove and second opening groove is opposite, that is, first opening groove and second opening groove are on the same axis, so that the light that launching tube emits can directly irradiate to receiving tube, and the light passes through the first inclined groove and second inclined groove and forms the inner chamber, places the ball in the first inclined groove, and the first cover and the second cover are covered, and the first inclined groove and second inclined groove form an inner chamber after the first cover and the second cover are covered, and the ball is located in the inner chamber, after assembling, the photoelectric position sensor provided by the utility model can be installed in the electric iron and other electric appliances, when the electric appliance is used in the normal direction, the ball is in the second inclined groove and is in contact with the inclined surface of second inclined groove, and the ball changes position by moving the inclined surface in the second inclined groove, when the electric appliance is used upside down, the ball is in the first inclined groove and is in contact with the inclined surface of first inclined groove, and the ball changes position by moving the inclined surface of first inclined groove, so that the electric appliance can be used in the normal direction and upside down, and the problem that the position can not be accurately changed when the electric appliance is used upside down in the conventional electric appliance is solved. BRIEF DESCRIPTION OF DRAWINGS

[0021] The utility model is further illustrated below in connection with the drawings and examples.

[0022] Figure 1 It is the assembly schematic drawing in some examples;

[0023] Figure 2 It is the sectional view schematic drawing in some examples;

[0024] Figure 3 It is the explosion schematic drawing in some examples;

[0025] Figure 4 It is the first cover structure schematic drawing in some examples;

[0026] Figure 5 It is the second cover structure schematic drawing in some examples;

[0027] Figure 6 It is the second cover structure schematic drawing in some examples.

[0028] Mark explanation:

[0029] 1, the first cover body; 101, the first inclined groove; 102, the first light blocking ear; 103, the second light blocking ear; 104, the first light transmission hole; 105, the second light transmission hole; 106, the positioning hole; 2, the second cover body; 201, the second inclined groove; 202, the first mounting groove; 203, the second mounting groove; 204, the first opening groove; 205, the second opening groove; 206, the positioning column; 207, the blocking edge; 208, the angle adjusting column; 209, the sealing groove; 3, the emitting tube; 301, the emitting head; 4, the receiving tube; 401, the receiving head; 5, the ball. DETAILED DESCRIPTION

[0030] The concept, specific structure and generated technical effects of the utility model will be described clearly and completely in combination with the embodiments and drawings, so as to fully understand the purpose, features and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, and other embodiments obtained by the person skilled in the art based on the embodiments of the utility model without creative labor are within the protection scope of the utility model. In addition, all the coupling / connection relations involved in the patent do not mean that the components are directly connected, but means that a better coupling structure can be formed by adding or reducing coupling auxiliary components according to the specific implementation situation. The various technical features in the utility model creation can be combined interactively without mutual contradiction and conflict.

[0031] The utility model provides a kind of photoelectric position sensor, it is applied in such as electric iron and other electrical appliances to realize the acquisition of position information, it includes: first cover body 1 is equipped with first inclined groove 101;Second cover body 2, it is covered with first cover body 1, is equipped with second inclined groove 201, the second inclined groove 201 is formed with first inclined groove 101 inner cavity, first inclined groove 101 two sides are equipped with first mounting groove 202 and second mounting groove 203 respectively, the first mounting groove 202 has with the first opening groove 204 of first inclined groove 101 communication, the second mounting groove 203 has with the second opening groove 205 of first inclined groove 101 communication, the second opening groove 205 is positionally corresponding with first opening groove 204, the first mounting groove 202 is equipped with emitting tube 3 in, second mounting groove 203 is equipped with receiving tube 4 in, inner cavity is equipped with ball 5.

[0032] In implementation, the first inclined groove 101 is formed on the first cover, the second inclined groove 201 is formed on the second cover, the first installation groove 202 and the second installation groove 203 are respectively formed on both sides of the second inclined groove 201, the emitting tube 3 is installed in the first installation groove 202, the receiving tube 4 is installed in the second installation groove 203, the first opening groove 204 is formed on the first installation groove 202 and communicates with the first inclined groove 101, the second opening groove 205 is formed in the second installation groove 203, the positions of the first opening groove 204 and the second opening groove 205 are opposite, that is, the first opening groove 204 and the second opening groove 205 are on the same axis, so that the light emitted by the emitting tube 3 can directly irradiate the receiving tube 4, the light passes through the first inclined groove 101 and the second inclined groove 201 to form an inner cavity, the ball 5 is placed in the first inclined groove 101, the first inclined groove 101 and the second inclined groove 201 form an inner cavity after the first cover 1 and the second cover 2 are closed, and the ball 5 is located in the inner cavity; after assembly, the photoelectric position sensor provided by the utility model can be installed in an electric iron or other electrical appliances; when the electrical appliance is used in a normal way, the ball 5 is in contact with the inclined surface of the second inclined groove 201 in the second inclined groove 201, the ball 5 changes position by moving along the inclined surface in the second inclined groove 201, when the electrical appliance is used upside down, the ball 5 is in contact with the inclined surface of the first inclined groove 101 in the first inclined groove 101, and the ball 5 changes position by moving along the inclined surface of the first inclined groove 101, so that the electrical appliance can be used in a normal way or upside down, and the problem that the position cannot be accurately changed when the electrical appliance is used upside down in a conventional electrical appliance is solved.

[0033] Further, the first cover 1 is provided with a plurality of positioning holes 106, the second cover 2 is provided with a plurality of positioning columns 206, the number of the positioning holes 106 and the positioning columns 206 is the same, and the positions of the positioning holes 106 and the positioning columns 206 are one-to-one corresponding, in this embodiment, the first cover 1 is provided with three positioning holes 106, the second cover 2 is provided with three positioning columns 206, when the first cover 1 and the second cover 2 are closed, each positioning column 206 on the second cover 2 passes through a positioning hole 106 on the first cover, so that accurate closing and positioning are realized, and the position deviation during closing is avoided.

[0034] In some embodiments, the first inclined groove 101 is provided with a first light blocking lug 102 and a second light blocking lug 103 on both sides, the position of the first light blocking lug 102 corresponds to the position of the first opening groove 204, the first light blocking lug 102 and the first opening groove 204 are provided with a first light transmission hole 104, the position of the second light blocking lug 103 corresponds to the position of the second opening groove 205, and the second light blocking lug 103 and the second opening groove 205 are provided with a second light transmission hole 105.

[0035] In implementation, the first light blocking lug 102 is arranged on the first cover 1 corresponding to the position of the first opening slot 204, and the second light blocking lug 103 is arranged on the first cover 1 corresponding to the position of the second opening slot 205, that is, when the first cover 1 and the second cover 2 are closed, the first light blocking lug 102 enters the first opening slot 204 to form a first light transmission hole 104, and the second light blocking lug 103 enters the second opening slot 205 to form a second light transmission hole 105, the infrared light emitted by the emitter tube 3 is irradiated out through the first light transmission hole 104, and then is received by the receiver tube 4 through the inner cavity formed by the first inclined slot 101 and the second inclined slot 201 to the second light transmission hole 105. Firstly, the first light blocking lug 102 and the second light blocking lug 103 are arranged to avoid the light irradiated out from between the first cover 1 and the second cover 2, avoid light leakage, and improve the stability of the photoelectric position sensor. Secondly, the first light transmission hole 104 and the second light transmission hole 105 are formed to reduce the area of the first opening slot 204 and the second opening slot 205, which is more conducive to the ball 5 to block the light emitted in the first opening slot 204, avoids light leakage, and improves the stability of the photoelectric sensor.

[0036] Further, the bottom of the first opening slot 204 is semicircular, the bottom of the second opening slot 205 is also semicircular, the bottom of the first light blocking lug 102 is also semicircular, and the bottom of the second light blocking lug 103 is also semicircular. The first opening slot 204 and the first light blocking lug 102 form a circular first light transmission hole 104, and the second light blocking lug 103 and the second opening slot 205 form a circular second light transmission hole 105. The ball 5 is spherical, the shapes of the first light transmission hole 104 and the second light transmission hole 105 are circular, and the shapes of the first light transmission hole 104 and the second light transmission hole 105 are the same as the cross-sectional shape of the ball 5, which is more conducive to the ball 5 to block the light. The side of the first opening slot 204 is provided with a blocking edge 207, and the side of the second opening slot 205 is also provided with a blocking edge 207, which can further reduce the area of the first light transmission hole 104 and the area of the second light transmission hole 105, thereby avoiding light leakage and enabling the ball 5 to better block the light. Moreover, the areas of the first light transmission hole 104 and the second light transmission hole 105 are small, which is conducive to the small ball 5. With the reduction of the ball 5, the overall structure can be further reduced, and the photoelectric position sensor provided by the utility model is more miniaturized. The miniaturized photoelectric position sensor can be adapted to more different electrical appliances.

[0037] In some cases, the first light transmission hole 104 and the second light transmission hole 105 can also have other shapes.

[0038] In some embodiments, the emitting tube 3 has an emitting head 301 which is located in the first light-transmitting hole 104 which has a shape corresponding to the emitting head 301, and the receiving tube 4 has a receiving head 401 which is located in the first light-transmitting hole 104 which has a shape corresponding to the receiving head 401.

[0039] In implementation, the emitting tube 3 is arranged in the first mounting groove 202, and the emitting head 301 of the emitting tube 3 is located in the first light-transmitting hole 104 which has a shape corresponding to the emitting head 301 to avoid light leakage, and the second light-transmitting hole 105 also has a shape corresponding to the receiving head 401 to avoid light leakage.

[0040] Further, in the present application, the emitting head 301 and the receiving head 401 are circular, and correspondingly, the first light-transmitting hole 104 and the second light-transmitting hole 105 are also circular to avoid light leakage.

[0041] In some embodiments, the bottom of the first inclined groove 101 is an inclined surface with an angle of 7-10°, the two sides of the first inclined groove 101 are inclined edges with an angle of 7-10°, the bottom of the second inclined groove 201 is an inclined surface with an angle of 7-10°, and the two sides of the second inclined groove 201 are inclined edges with an angle of 7-10°.

[0042] In implementation, the bottom of the first inclined groove 101 is arranged as an inclined surface with an angle of 7-10°, and the two sides of the first inclined groove 101 are arranged as inclined edges with an angle of 7-10°, so that the cross section of the first inclined groove 101 is trapezoidal, and the trapezoidal structure facilitates the rolling and positioning of the ball 5. Similarly, the bottom of the second inclined groove 201 is arranged as an inclined surface with an angle of 7-10°, and the two sides of the second inclined groove 201 are arranged as inclined edges with an angle of 7-10°. The shape design of the second inclined groove 201 is the same as that of the first inclined groove 101, and the product can move in the same shape space whether it is upright or inverted.

[0043] Further, in the present embodiment, the bottom of the first inclined groove 101 has an angle of 7°, the two sides of the first inclined groove 101 are arranged as inclined edges with an angle of 10°, the bottom of the second inclined groove 201 has an angle of 7°, and the two sides of the second inclined groove 201 are arranged as inclined edges with an angle of 10°. The first inclined groove and the second inclined groove arranged as inclined edges with an angle of 10° are suitable for product side detection, and the product ball will be in contact with the inclined surface with an angle of 10° when the product is placed on the side.

[0044] In some embodiments, the emitting tube 3 is provided with a pin, the receiving tube 4 is provided with a pin, the second cover 2 is provided with a through hole, and the pins pass through the through hole.

[0045] In implementation, the through hole is arranged on the second cover 2, the pins pass through the through hole and are exposed to the outside, and the emitting tube 3 and the receiving tube 4 are connected to external electrical elements and communication elements through the pins.

[0046] Specifically, the emitting tube 3 has two pins, the receiving tube 4 has two pins, and the second cover 2 is provided with four through holes, and each pin passes through a through hole.

[0047] In some embodiments, the through holes of the second cover 2 are provided with sealing grooves 209, and sealing glue (not shown in the figure) is arranged in the sealing grooves 209.

[0048] In implementation, the sealing grooves 209 are arranged at the through holes of the second cover 2, and the sealing glue is arranged in the sealing grooves 209, so as to improve the sealing performance of the pins passing through the through holes, avoid the entry of water vapor into the second cover 2 in a humid environment, and prevent the rolling of the inverted ball 5.

[0049] Specifically, the second cover 2 is provided with four balls 5, the emitting tube 3 has two pins, the receiving tube 4 has two pins, each pin passes through a through hole, the two through holes through which the pins of the emitting tube 3 pass are arranged side by side, a sealing groove 209 is arranged at the two through holes of the pins of the emitting tube 3, a sealing groove 209 is arranged at the two through holes of the pins of the receiving tube 4, that is, the second cover 2 has two sealing grooves 209, and sealing glue is arranged in each sealing groove 209.

[0050] Sometimes, it is necessary to change the angle of the bottom of the first inclined groove or the angle of the bottom of the second inclined groove according to different application scenarios of the product, so as to realize different sensing sensitivity by adjusting the angle. In some embodiments, the bottom of the second cover 2 is provided with an angle adjusting column 208.

[0051] In implementation, after the photoelectric position sensor provided in the embodiment is installed in an electrical appliance, the second cover 2 is installed on the circuit board of the electrical appliance. For example, when the angle of the bottom of the first inclined surface or the angle of the second inclined surface is 10°, the second cover 2 can be directly installed on the circuit board of the electrical appliance, and the angle adjusting column 208 on the second cover 2 supports the second cover 2 to keep the angle of the bottom of the first inclined groove 101 or the angle of the bottom of the second inclined groove 201 in the second cover 2 at 10°. When it is necessary to adjust the angle of the bottom of the first inclined surface or the angle of the bottom of the second inclined surface to 7°, a through hole can be formed in the circuit board of the electrical appliance, and the angle adjusting column 208 passes through the through hole. The angle adjusting column 208 no longer supports the second cover 2, and the overall angle of the second cover 2 is reduced, so that the angle of the bottom of the first inclined surface or the angle of the bottom of the second inclined surface is reduced to 7°. In this way, the angle can be adjusted more conveniently without the need to additionally increase external structural members.

[0052] The utility model provides a kind of electrical appliance, including the photoelectric position sensor described in the above embodiment.The specific structure of photoelectric position sensor has been described in the foregoing, and will not be repeated here.

[0053] The above is a specific description of the preferred embodiment of the present application, but the present application is not limited to the described embodiment, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A photoelectric position sensor, characterized in that, include: The first cover body is provided with a first inclined groove; The second cover, which covers the first cover, has a second inclined groove. The second inclined groove and the first inclined groove form an inner cavity. The second inclined groove has a first mounting groove and a second mounting groove on its two sides respectively. The first mounting groove has a first opening groove that communicates with the first inclined groove. The second mounting groove has a second opening groove that communicates with the first inclined groove. The second opening groove and the first opening groove are positioned correspondingly. The first mounting groove has a transmitting tube, the second mounting groove has a receiving tube, and the inner cavity has a ball bearing.

2. The photoelectric position sensor according to claim 1, characterized in that, The first inclined groove is provided with a first light-blocking ear and a second light-blocking ear on both sides. The position of the first light-blocking ear corresponds to the position of the first opening groove. A first light-transmitting hole is left between the first light-blocking ear and the first opening groove. The position of the second light-blocking ear corresponds to the position of the second opening groove. A second light-transmitting hole is left between the second light-blocking ear and the second opening groove.

3. The photoelectric position sensor according to claim 2, characterized in that, The transmitting tube has a transmitting head located within a first light-transmitting hole, the shape of which corresponds to the shape of the transmitting head. The receiving tube has a receiving head located within a first light-transmitting hole, the shape of which corresponds to the shape of the receiving head.

4. The photoelectric position sensor according to claim 2, characterized in that, The first cover has a number of positioning holes, and the second cover has a number of positioning posts, with each positioning post corresponding to a positioning hole.

5. The photoelectric position sensor according to claim 1, characterized in that, The bottom angle of the first inclined groove is a 7-10° slope, and the two sides of the first inclined groove are inclined sides with an angle of 7-10°. The bottom angle of the second inclined groove is a 7-10° slope, and the two sides of the second inclined groove are inclined sides with an angle of 7-10°.

6. The photoelectric position sensor according to claim 1, characterized in that, The first opening slot has a side flange, and the second opening has a side flange.

7. The photoelectric position sensor according to claim 1, characterized in that, The transmitting tube has pins, the receiving tube has pins, and the second cover has a through hole through which the pins pass.

8. The photoelectric position sensor according to claim 1, characterized in that, The second cover has a sealing groove at the through hole, and the sealing groove is filled with sealant.

9. The photoelectric position sensor according to claim 1, characterized in that, The bottom of the second cover is provided with an angle adjustment post.

10. An electrical appliance, characterized in that, Includes the photoelectric position sensor according to any one of claims 1-9.

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