Electric furnace with hidden indicator lamp on knob

Abstract

The electric furnace comprises a shell, a heating body and a temperature controller, the heating body and the temperature controller are arranged in the shell, a connecting shaft is arranged on the temperature controller, a mounting hole is formed in the shell, the knob is arranged on the outer side of the mounting hole, an annular mounting groove is formed in the knob, and a transparent light guide lampshade is fixedly arranged in the annular mounting groove. One end of the light guide lampshade partially penetrates through the knob and extends to the outer end face of the knob to form an indicator light, the other end of the light guide lampshade is inserted into the mounting hole to be fixedly connected with the connecting shaft, a circuit board assembly which is arranged on the connecting shaft in a sleeving mode and disconnected / connected with the temperature controller is fixedly arranged on the inner wall of the shell, and an LED lamp covered with the light guide lampshade is electrically connected to the circuit board assembly. The light guide lampshade and the connecting shaft rotate along with the rotary knob, the circuit board assembly is powered on to enable the LED lamp to emit light, and light is transmitted to the indicator lamp through the light guide lampshade to enable the indicator lamp to emit light. Compared with the prior art, the electric furnace has the advantages that the indicating lamp is hidden in the knob, the appearance of the electric furnace is simplified, and the appearance of the electric furnace is beautified.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric furnace technical field especially, it relates to electric furnace with hidden indicating lamp of knob. BACKGROUND

[0002] The indicating lamp on the electric furnace is generally used to indicate the state of the electric furnace, and the indicating lamp can provide intuitive visual feedback to help the user understand the operation of the device.

[0003] The indicating lamp of the existing electric furnace is usually arranged on the front side panel of the electric furnace for the user to watch, but such arrangement makes the appearance of the electric furnace have more elements and look less beautiful. SUMMARY

[0004] The utility model discloses to the indicating lamp on the electric furnace is arranged on the front side panel of the electric furnace, and the utility model discloses to solve the technical problem that looks less beautiful, and the technical problem that the utility model discloses to solve is to provide a kind of electric furnace with hidden indicating lamp of knob to solve the above problems.

[0005] The utility model discloses the technical scheme that the above technical problem is solved as follows: electric furnace with hidden indicating lamp of knob, including shell, the heating body and temperature controller in the shell, temperature controller and heating body electric connection control heating body work, be equipped with connecting shaft on the temperature controller, be equipped with the mounting hole that is communicated with the shell on the shell, the outside of mounting hole is equipped with knob, be equipped with annular installation groove on the knob, transparent light guide lamp cover is fixedly arranged in annular installation groove, light guide lamp cover one end part penetrates knob and extends to the indicating lamp of knob outer end surface formation, the other end is inserted from mounting hole and is fixedly connected with connecting shaft, the circuit board assembly that is fixedly arranged on the inner wall of shell and is disconnected / connected with temperature controller is sleeved on connecting shaft, the knob, light guide lamp cover and connecting shaft can be rotated relative to mounting hole, the LED lamp that is electrically connected is equipped on the circuit board assembly, light guide lamp cover is covered above LED lamp, can transmit light source to indicating lamp, when rotating knob, light guide lamp cover and connecting shaft rotate with knob and make LED lamp emit light with the circuit board assembly energization, light is transmitted to indicating lamp by light guide lamp cover, makes indicating lamp emit light.

[0006] The further preferred scheme of the utility model is that: the circuit board assembly is equipped with through hole, and the end of connecting shaft close to knob is fixedly connected with light guide lamp cover by passing through through hole and mounting hole in sequence.

[0007] The utility model further's prior scheme is: the light guide lamp shade has hollow shaft sleeve, be equipped with non - circular channel in the shaft sleeve, the annular installation groove groove bottom is equipped with the non - circular insert post that coordinates with non - circular channel, non - circular insert post inserts into the sleeve and coordinates with non - circular channel, when the knob rotates can drive the shaft sleeve rotation, the connecting shaft is close to the side appearance of shaft sleeve is non - circular cylinder that coordinates with non - circular channel, non - circular cylinder extends into the shaft sleeve and coordinates with non - circular channel, when the shaft sleeve rotates can drive the connecting shaft rotation.

[0008] The utility model further's prior scheme is: the shell is close to the annular table that is set along the installation hole circumference of the recessed of installation hole department, the inner end of knob abuts on the annular table.

[0009] The utility model further's prior scheme is: the end face of shaft sleeve close knob one side is equipped with the outer edge that extends to the outside, the outer edge side wall is equipped with first elastic clamping piece along the circumference, first elastic clamping piece extends along the length direction of shaft sleeve and protrudes to the width direction of shaft sleeve, the inner wall of annular installation groove is equipped with second elastic clamping piece that coordinates with first elastic clamping piece along its circumference, the knob and light guide lamp shade are fixed through first elastic clamping piece and second elastic clamping piece.

[0010] The utility model further's prior scheme is: the face of first elastic clamping piece close annular installation groove inner wall is the circular arc curved surface that coordinates with annular groove inner wall, and the bottom surface of second elastic clamping piece is the inclined guide curved surface that coordinates with first clamping piece.

[0011] The utility model further's prior scheme is: the outer edge side wall is equipped with the elastic hook body that extends to the installation hole and hooks in the back side of annular table along the circumference, and the elastic hook body is arranged with first elastic clamping piece.

[0012] The utility model further's prior scheme is: first elastic clamping piece and elastic hook body form the periphery that surrounds the inside of shaft sleeve, and the periphery has spacing with the shaft sleeve.

[0013] The utility model further's prior scheme is: the end face of shaft sleeve close knob is equipped with the lug, is equipped with the perforation that corresponds with the lug on the knob, the lug passes through the perforation and is flush with the outer end surface of knob and forms the indicating lamp.

[0014] The utility model further's prior scheme is: the circuit board subassembly includes PCB support and sets up on the circuit board of PCB support, and the PCB support is fixed on the inner wall of shell and can cover installation hole from inside.

[0015] Compared with the prior art, the utility model has the advantages that the transparent light guide lamp cover is arranged in the annular installation groove of the knob, one end of the light guide lamp cover extends to the outer end face of the knob to form an indicating lamp, the light guide lamp cover covers the LED lamp, the light source can be transmitted to the indicating lamp, when the knob is rotated, the light guide lamp cover and the connecting shaft rotate with the knob, the circuit board assembly is electrified to make the LED lamp emit light, the light is transmitted to the indicating lamp through the light guide lamp cover to make the indicating lamp emit light, the state of the electric furnace can be known by watching the indicating lamp on the knob, when the electric furnace works, the LED lamp is bright, the indicating lamp on the lamp cover can be seen, when the electric furnace does not work, the LED lamp is not bright, the indicating lamp on the lamp cover cannot be seen, the indicating lamp is hidden in the knob, the appearance of the electric furnace is simplified, and the appearance of the electric furnace is beautified. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model will be described in further detail below in combination with the drawings and preferred embodiments, but the person skilled in the art will appreciate that these drawings are only drawn for the purpose of explaining the preferred embodiments and therefore should not be regarded as limiting the scope of the utility model, and in addition, the drawings only schematically show the composition or structure of the described object conceptually and can contain exaggerated display, and the drawings are not necessarily drawn to scale unless specifically indicated.

[0017] Figure 1 It is the preferred embodiment stereoscopic structure schematic drawing of the utility model;

[0018] Figure 2 It is the front view of the preferred embodiment of the utility model;

[0019] Figure 3 It is the preferred embodiment of the utility model Figure 2 The sectional view at A-A;

[0020] Figure 4 It is the local enlarged view of the preferred embodiment B of the utility model;

[0021] Figure 5 It is the stereoscopic structure schematic drawing of the light guide lamp cover of the preferred embodiment of the utility model;

[0022] Figure 6 It is the stereoscopic structure schematic drawing of the knob of the preferred embodiment of the utility model.

[0023] In the figure: 1, the shell; 11, mounting hole; 12, annular table; 2, heating body; 3, temperature controller; 31, connecting shaft; 32, non-cylinder; 4, knob; 41, annular mounting groove; 42, non-circular column; 43, second elastic clamping block; 431, guide curved surface; 44, perforation; 5, light guide lampshade; 51, indicator light; 52, shaft sleeve; 53, non-circular channel; 54, outer edge; 55, first elastic clamping block; 56, elastic hook body; 6, circuit board assembly; 61, PCB support; 62, circuit board; 63, through hole; 7, fixed seat; 8, heat-conducting disc. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present application will be described in detail below with reference to the drawings, and those skilled in the art will appreciate that the description is merely illustrative, exemplary, and should not be construed as limiting the scope of the present application.

[0025] It should be noted that similar reference numerals refer to similar items throughout the drawings, and once an item is defined in one drawing, it can not be further defined and explained in subsequent drawings.

[0026] The present embodiment mainly describes an electric stove with a hidden indicator light on the knob, and the specific description is as follows:

[0027] As Figures 1 to 6As shown, the knob with hidden indicator light electric furnace, including shell 1, heating body 2 and temperature controller 3, heating body 2 and temperature controller 3 are located in the shell 1, temperature controller 3 is connected with power supply, temperature controller 3 is electrically connected with heating body 2 to control heating body 2 work, fixedly provided with the fixed seat 7 of heating body 2 in the shell 1, heating body 2 is fixed on the fixed seat 7, heating body 2 is provided with heat-conducting disc 8 on heating body 2 and is fixedly connected with fixed seat 7, heating body 2 work will heat transfer to heat-conducting disc 8, heat-conducting disc 8 heating realizes the purpose of warming, food baking etc., heating body 2 can be heating tube, electric heating disc, electric ceramic stove, PTC heating block etc.Temperature controller 3 is provided with connecting shaft 31, shell 1 is provided with installation hole 11 that communicates with the shell 1 in, the outside of installation hole 11 is provided with knob 4, knob 4 is provided with annular mounting groove 41, annular mounting groove 41 is fixedly provided with light guide lamp shade 5, light guide lamp shade 5 is transparent light guide material, light guide lamp shade 5 one end part penetrates through knob 4 and extends to the outer end surface of knob 4 and forms indicator light 51, the other end is inserted from installation hole 11 and is fixedly connected with the connecting shaft 31 of temperature controller 3, indicator light 51 is used to pass to the user the state that the electric furnace currently is;The inner wall of shell 1 is fixedly provided with circuit board assembly 6 that is inserted on connecting shaft 31 and is disconnected / connected with temperature controller 3, knob 4, light guide lamp shade 5 and connecting shaft 31 can rotate relative to installation hole 11, circuit board assembly 6 is electrically connected with LED lamp, light guide lamp shade 5 is covered above LED lamp, can transmit light source to indicator light 51, when rotating knob 4, light guide lamp shade 5 and connecting shaft 31 rotate with knob 4, after rotating, temperature controller 3 is energized with circuit board assembly 6 and makes LED lamp emit light, light is transmitted to indicator light 51 through light guide lamp shade 5 and makes indicator light 51 emit light, when reverse rotating knob 4, light guide lamp shade 5 and temperature controller 3 rotate with knob 4, after rotating, temperature controller 3 is disconnected with circuit board assembly 6, LED is closed, from the appearance, light guide lamp shade 5 cannot be seen.Indicator light 51 on the knob 4 can be known the state that the electric furnace is by watching, when the electric furnace works, LED lamp lights up, can all see the indicator light 51 on the lamp shade, when the electric furnace does not work, LED lamp does not light, cannot see the indicator light 51 on the lamp shade.Indicator light 51 is hidden in knob 4, simplifies the appearance of electric furnace, beautifies the appearance of electric furnace.

[0028] As shown in Figure 4 Circuit board assembly 6 includes PCB support 61 and circuit board 62 provided on PCB support 61, PCB support 61 is fixed on the inner wall of shell 1 and can cover installation hole 11 from inside, PCB support 61 is used to support and fix circuit board 62, guarantee the stability and reliability of circuit board 62, PCB support 61 and circuit board 62 are all provided with corresponding through hole 63, one end of connecting shaft 31 close to knob 4 is fixedly connected with light guide lamp shade 5 by passing through through hole 63 and installation hole 11 in sequence, connecting shaft 31 can rotate in through hole 63.

[0029] As shown in Figure 4 ,Figure 5 And Figure 6 As shown in the figure, the light guide lamp shade 5 has a hollow shaft sleeve 52, the shaft sleeve 52 is provided with a non-circular channel 53, the bottom of the annular mounting groove 41 is provided with a non-circular insertion column 42 matched with the non-circular channel 53, the non-circular insertion column 42 is inserted into the sleeve and matched with the non-circular channel 53, this design can realize that when the knob 4 rotates, the shaft sleeve 52 can be driven to rotate, the side of the connecting shaft 31 close to the shaft sleeve 52 is shaped as a non-circular cylinder 32 matched with the non-circular channel 53, the non-circular cylinder 32 extends into the shaft sleeve 52 and matches with the non-circular channel 53, when the shaft sleeve 52 rotates, the connecting shaft 31 can be driven to rotate. The cross section of the non-circular channel 53 can be shaped as a special shape, a triangle, a polygon, etc., the cross section of the non-circular channel 53 in the scheme is shown as a D shape, the non-circular insertion column 42 is shaped as a D-shaped insertion column matched with the non-circular channel 53, and the non-circular cylinder 32 is shaped as a D-shaped cylinder matched with the non-circular channel 53.

[0030] Specifically, to avoid the knob 4 from slipping off the light guide lamp shade 5, the light guide lamp shade 5 from slipping off the shaft sleeve 52, the end face of the shaft sleeve 52 close to the knob 4 is provided with an outer edge 54 extending outward, the side wall of the outer edge 54 is provided with a first elastic clamping block 55 along the circumference, the first elastic clamping block 55 extends along the length direction of the shaft sleeve 52 and protrudes towards the width direction of the shaft sleeve 52, the inner wall of the annular mounting groove 41 is provided with a second elastic clamping block 43 matched with the first elastic clamping block 55 along the circumference, the knob 4 and the light guide lamp shade 5 are clamped and fixed by the first elastic clamping block 55 and the second elastic clamping block 43; the side wall of the outer edge 54 is provided with an elastic hook body 56 extending into the mounting hole 11 and hooked on the back side of the annular table 12 along the circumference, the elastic hook body 56 is hooked on the back side of the annular table 12, which has a limiting effect on the elastic hook body 56, improves the stability of the structure of the lamp shade and the connecting shaft 31, the elastic hook body 56 is arranged alternately with the first elastic clamping block 55, and the distance from the first elastic clamping block 55 to the axis of the shaft sleeve 52 is equal to the middle of the annular mounting groove 41 and greater than the distance from the end of the elastic hook body 56 close to the knob 4 to the axis. The arrangement of the first elastic clamping block 55 and the second elastic clamping block 43, and the arrangement of the elastic hook body 56 hooked on the back side of the annular table 12, facilitate the installation of the knob 4 and the light guide lamp shade 5, and save installation time.

[0031] As Figure 5 And Figure 6 To avoid the first elastic clamping block 55 from being stuck at the second elastic clamping block 43 during installation, the surface of the first elastic clamping block 55 close to the inner wall of the annular mounting groove 41 is shaped as a circular arc curved surface matched with the inner wall of the annular groove, the bottom surface of the second elastic clamping block 43 is shaped as an upward inclined guide curved surface 431 matched with the first clamping block, and the first elastic clamping block 55 can be hooked on the second elastic clamping block 43 along the guide curved surface 431.

[0032] Specific, the first elastic block 55 and elastic hook body 56 form the shaft sleeve 52 surrounded by the outer periphery, the outer periphery and shaft sleeve 52 has a gap, the gap can be the first elastic block 55 and elastic hook body 56 has a space for deformation, facilitate the installation of the lampshade and knob 4, lampshade and temperature controller 3.

[0033] Specific, the shaft sleeve 52 is close to the end face of the knob 4 is provided with a protrusion, the knob 4 is provided with a corresponding perforated 44, the protrusion through the perforated 44 with the knob 4 outer end flush to form the above-mentioned indicator light 51.

[0034] In the description of the present application, it should be pointed out that the terms "upper", "lower", "front", "rear", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the product in use, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the present application.

[0035] The above provides a knob with hidden indicator light electric stove provided by the present application has been described in detail, this paper applied to the principle and implementation of the present application are described in detail, the above example is only used to help understand the present application and core idea, it should be pointed out that, for ordinary skilled in the art, without departing from the principle of the present application, the present application can be improved and modified, these improvements and modifications also fall within the scope of protection of the present application claims.

Claims

1. An electric stove with a knob and a hidden indicator light, comprising a housing, a heating element and a thermostat disposed within the housing, the thermostat being electrically connected to the heating element to control its operation, the thermostat having a connecting shaft, the housing having a mounting hole communicating with the interior of the housing, and a knob disposed outside the mounting hole, characterized in that: The knob has an annular mounting groove, and a transparent light guide cover is fixedly installed in the annular mounting groove. One end of the light guide cover extends through the knob to the outer end face of the knob to form an indicator light, and the other end is inserted into the mounting hole and fixedly connected to the connecting shaft. A circuit board assembly is fixedly installed on the inner wall of the housing, which is sleeved on the connecting shaft and disconnected / connected to the thermostat. The knob, light guide cover, and connecting shaft can rotate relative to the mounting hole. An LED light is electrically connected to the circuit board assembly. The light guide cover covers the LED light and can transmit the light source to the indicator light. When the knob is rotated, the light guide cover and the connecting shaft rotate with the knob and are energized to the circuit board assembly, causing the LED light to emit light. The light is transmitted to the indicator light through the light guide cover, causing the indicator light to emit light.

2. The electric furnace with a knob featuring a hidden indicator light according to claim 1, characterized in that: The circuit board assembly has through holes, and the end of the connecting shaft near the knob passes through the through holes and mounting holes in sequence to be fixedly connected to the light guide cover.

3. The electric furnace with a knob featuring a hidden indicator light according to claim 1, characterized in that: The light guide cover has a hollow bushing with a non-circular channel inside. The bottom of the annular mounting groove has a non-circular post that mates with the non-circular channel. The non-circular post is inserted into the sleeve and mates with the non-circular channel. When the knob is turned, it can drive the bushing to rotate. The side of the connecting shaft near the bushing is a non-circular cylinder that mates with the non-circular channel. The non-circular cylinder extends into the bushing and mates with the non-circular channel. When the bushing rotates, it can drive the connecting shaft to rotate.

4. The electric furnace with a knob featuring a hidden indicator light according to claim 3, characterized in that: The housing has a recessed annular platform near the mounting hole, which is arranged circumferentially around the mounting hole, and the inner end of the knob abuts against the annular platform.

5. The electric furnace with a knob featuring a hidden indicator light according to claim 4, characterized in that: The end face of the bushing near the knob has an outwardly extending edge. The side wall of the outer edge has a first elastic locking block along the circumferential direction. The first elastic locking block extends along the length direction of the bushing and protrudes along the width direction of the bushing. The inner wall of the annular mounting groove has a second elastic locking block that cooperates with the first elastic locking block. The knob and the light guide lamp cover are fixed by the first elastic locking block and the second elastic locking block.

6. The electric furnace with a knob featuring a hidden indicator light according to claim 5, characterized in that: The surface of the first elastic block near the inner wall of the annular mounting groove is an arc-shaped curved surface that mates with the inner wall of the annular groove, and the bottom surface of the second elastic block is an upwardly inclined guide surface that mates with the first block.

7. The electric furnace with a knob featuring a hidden indicator light according to claim 5, characterized in that: The outer sidewall is provided with an elastic hook extending into the mounting hole and hooking onto the back side of the annular platform along the circumferential direction. The elastic hook is arranged alternately with the first elastic locking block.

8. The electric furnace with a knob featuring a hidden indicator light according to claim 7, characterized in that: The first elastic block and the elastic hook form an outer periphery that surrounds the bushing, and there is a gap between the outer periphery and the bushing.

9. The electric furnace with a knob featuring a hidden indicator light according to claim 3, characterized in that: The bushing has a protrusion on its end face near the knob, and the knob has a through hole corresponding to the protrusion. The protrusion passes through the through hole and is flush with the outer end face of the knob to form the indicator light.

10. The electric furnace with a knob featuring a hidden indicator light according to claim 2, characterized in that: The circuit board assembly includes a PCB bracket and a circuit board disposed on the PCB bracket. The PCB bracket is fixed to the inner wall of the housing and can cover the mounting holes from the inside.

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