CN219936330U - Temperature control device and refrigeration equipment - Google Patents

Abstract

The present utility model relates to a temperature control device, comprising: a control panel; the fixed seat is provided with a shaft hole; the rotating shaft piece comprises a limiting cover, a limiting arm and a rotating shaft part which are integrally formed; the limit cover extends outwards along the radial direction from the outer wall of the rotating shaft part; the limiting arm extends forwards along the axial direction of the rotating shaft part from the limiting cover, and a limiting protrusion is convexly arranged on the outer wall of the front end of the limiting arm; the rotating shaft part is arranged at the axle center of the axle hole; the limiting cover abuts against the rear end face of the shaft hole, the limiting arm penetrates through the shaft hole, the limiting protrusion abuts against the front end face of the shaft hole, and the outer wall of the limiting arm is attached to the inner wall of the shaft hole; a knob connected to the front end of the rotating shaft; and the potentiometer is connected with the rear end of the rotating shaft part. According to the temperature control device provided by the utility model, the rotating shaft part can be limited to rotate at the axle center of the axle hole and can be limited axially, so that the rotation stability of the rotating shaft part is improved, and the temperature control precision of the temperature control device is further improved.

Description

Temperature control device and refrigeration equipment

Technical Field

The utility model relates to the technical field of refrigeration equipment, in particular to a temperature control device and refrigeration equipment.

Background

The temperature controller transmits the temperature to the temperature controller through the temperature protector, and the temperature controller sends out a switch command, so that the operation of the equipment is controlled to achieve the ideal temperature and energy-saving effect.

The temperature controller of the existing refrigeration equipment usually adopts a mechanical temperature controller or an electronic temperature controller, wherein the temperature control precision of the refrigeration equipment adopting the mechanical temperature controller is not high, the error range is large, and meanwhile, the mechanical temperature controller is not stable enough to adjust. Therefore, the mechanical temperature controller of the existing refrigeration equipment has the problems of inaccurate temperature control and unstable adjustment.

Disclosure of Invention

The utility model aims to provide a temperature control device and refrigeration equipment, so as to optimize the temperature control device in the related technology and improve the temperature control precision of the temperature control device.

In order to solve the technical problems, the utility model adopts the following technical scheme:

according to one aspect of the present utility model, there is provided a temperature control apparatus comprising: a control panel; the fixed seat is arranged on the control panel, a shaft hole is arranged on the fixed seat, and the shaft hole is communicated with the front side and the rear side of the control panel; the rotating shaft piece comprises a limiting cover, a limiting arm and a rotating shaft part which are integrally formed; the limit cover extends outwards along the radial direction from the outer wall of the rotating shaft part; the limiting arms extend forwards from the limiting cover along the axial direction of the rotating shaft part, limiting protrusions are convexly arranged on the outer wall of the front end of each limiting arm, a plurality of limiting arms are arranged, and the plurality of limiting arms are circumferentially arranged around the periphery of the rotating shaft part; the rotating shaft part is arranged at the axle center of the axle hole, and the front end of the rotating shaft part is exposed out of the front surface of the control panel; the limiting cover is propped against the rear end face of the shaft hole, the limiting arm penetrates through the shaft hole, the limiting protrusion is propped against the front end face of the shaft hole, and the outer wall of the limiting arm is attached to the inner wall of the shaft hole; the knob is rotatably arranged on the front side of the control panel and is connected with the front end of the rotating shaft part; the potentiometer is arranged at the rear side of the rotating shaft part and is connected with the rear end of the rotating shaft part; the knob can drive the rotating shaft part to coaxially rotate, so that the limiting arm rotates along the inner wall of the shaft hole, and the limiting cover and the limiting boss respectively abut against the front end face and the rear end face of the shaft hole to rotate.

According to some embodiments of the utility model, a clamping arm extending forwards along the axial direction of the shaft hole is arranged on the periphery of the fixed seat; the outer wall of the front end of the clamping arm is convexly provided with a clamping protrusion; the control panel is provided with a bayonet corresponding to the clamping protrusion, and the bayonet is positioned on the periphery of the shaft hole; the clamping arm penetrates through the bayonet, and the clamping protrusion is clamped on the front end face of the bayonet.

According to some embodiments of the utility model, a limiting column extending forwards is further arranged on the periphery of the fixing seat, and the limiting column and the fixing seat are arranged at intervals; the front end of the limiting post is propped against the rear surface of the control panel.

According to some embodiments of the utility model, a positioning column extending forwards along the axial direction of the shaft hole is arranged at the front end of the limiting column; the control panel is provided with a positioning hole matched with the positioning column, the positioning hole is positioned on the periphery of the shaft hole, and the positioning hole and the bayonet are arranged at intervals; the positioning column can extend into the positioning hole, so that the fixing seat moves back and forth relative to the control panel.

According to some embodiments of the utility model, the front surface of the fixing seat is provided with a convex rib in a forward convex manner, the convex rib is arranged on the front end surface of the shaft hole, and the convex rib is annular and is arranged around the periphery of the shaft hole; the limiting bulge is propped against the convex rib; when the knob drives the rotating shaft part to coaxially rotate, the limiting protrusion abuts against the convex rib to rotate.

According to some embodiments of the utility model, a rotary groove is concavely formed in the front surface of the control panel, and a via hole is formed in the rotary groove; the knob is rotatably arranged in the rotary groove; the front end of the rotating shaft part is connected with the knob through the through hole.

According to some embodiments of the utility model, at least one first rotation plane is arranged on the outer peripheral wall of the front end of the rotation shaft part; the rear surface of the knob is provided with a rotating groove; a second rotating plane matched with the first rotating plane is arranged on the peripheral side wall of the rotating groove; the knob is connected with the front end of the rotating shaft part through the rotating groove; when the front end of the rotating shaft part stretches into the rotating groove, the first rotating plane is attached to the second rotating plane, so that the knob and the rotating shaft part can synchronously rotate.

Some embodiments of the utility model include the shaft portion including a first shaft portion and a second shaft portion; the first rotating shaft part extends forwards from the front surface of the limit cover, and the second rotating shaft part extends backwards from the rear surface of the limit cover; the first rotating plane is arranged on the outer peripheral wall of the first rotating shaft part, and the front end of the first rotating shaft part is connected with the knob; the rear end of the second rotating shaft part is connected with the potentiometer.

According to some embodiments of the utility model, the temperature control device further comprises a main control board and a box body; the main control board is arranged at the rear side of the rotating shaft piece; the potentiometer is arranged at the rear side of the main control board and is connected with the main control board; the box body is used for installing the main control board, the rotating shaft part, the fixing seat and the potentiometer, the front side of the box body is opened, and the control panel covers and locates the opening part of the box body.

According to another aspect of the present utility model, there is also provided a refrigeration apparatus including: a case configured as an outer case of the refrigeration apparatus; the box liner is arranged in the box body, and a refrigeration compartment is formed in the box liner; and a temperature control device provided in the case, wherein the temperature control device is used for adjusting the temperature in the cooling room.

As can be seen from the technical scheme, the embodiment of the utility model has at least the following advantages and positive effects:

according to the temperature control device provided by the utility model, the rotating shaft part comprises the rotating shaft part, the limiting cover and the limiting arm which are integrally formed, the knob is connected with the front end of the rotating shaft part, and the potentiometer is connected with the rear end of the rotating shaft part, so that the rotating shaft part and the potentiometer can be driven to synchronously rotate when the knob is rotated, and the potentiometer can be used for adjusting the temperature. Utilize spacing arm to encircle arranging in the periphery of pivot portion, the outer wall of spacing arm pastes with the inner wall in shaft hole mutually, and when rotatory knob, pivot portion can drive spacing arm along the inner wall rotation in shaft hole to can be with the spacing axle center department rotation in shaft hole of pivot portion, improve the rotation stability of pivot portion, and then improved temperature control device's accuse temperature precision. Simultaneously, utilize spacing arm to pass the shaft hole on the fixing base, spacing lid offsets with the rear end face in shaft hole, spacing protruding and the preceding terminal surface in shaft hole of spacing arm front end offset to can make spacing lid and spacing protruding respectively support and rotate on the front and back terminal surface in shaft hole, and then carry out axial spacing to the pivot portion, prevent that the pivot portion from axial displacement, stability when further increasing the pivot portion rotation, and then can stably drive the potentiometer to rotate, make the resistance of potentiometer stably change, thereby improved temperature control device's stability, also improved temperature control device's accuse temperature precision.

Drawings

Fig. 1 is a schematic view illustrating a structure of a refrigerator according to an embodiment of the present utility model.

Fig. 2 is a schematic structural view of the temperature control device in fig. 1.

Fig. 3 is an exploded view of fig. 2.

Fig. 4 is a schematic view of the structure of a portion in fig. 3.

Fig. 5 is an exploded view of fig. 4.

Fig. 6 is a schematic view of a portion of the structure of fig. 4 from another perspective.

Fig. 7 is an enlarged view of fig. 6.

Fig. 8 is a schematic structural view of the control panel of fig. 6.

Fig. 9 is a cross-sectional view of fig. 4.

Fig. 10 is a cross-sectional view of fig. 9 with the main control board and potentiometer removed.

Fig. 11 is a schematic structural view of the shaft member in fig. 3 at another view angle.

Fig. 12 is a front view of fig. 11.

Fig. 13 is a cross-sectional view of fig. 12.

Fig. 14 is a schematic structural view of the shaft member in fig. 3 at another view angle.

Fig. 15 is a schematic view of the structure of the shaft member and the fixing base.

Fig. 16 is a cross-sectional view of fig. 15.

Fig. 17 is a schematic view of the knob of fig. 3 in another view.

Fig. 18 is a schematic structural diagram of the main control board in fig. 3 at another view angle.

The reference numerals are explained as follows: 1. a case; 11. a door body; 20. a temperature control device; 3. a case body; 4. a control panel; 41. a via hole; 42. positioning holes; 43. a bayonet; 44. a rotary groove; 441. a limit rib; 5. a fixing seat; 51. a shaft hole; 511. a guide surface; 52. positioning columns; 53. a clamping arm; 54. a clamping protrusion; 55. a limit column; 56. a stop surface; 57. a clamping surface; 58. convex ribs; 59. a boss; 6. a rotating shaft member; 61. a rotating shaft portion; 611. a first rotating shaft portion; 6111. a first plane of rotation; 612. a second rotating shaft portion; 62. a limit cover; 63. a limiting arm; 64. a limit protrusion; 641. an inclined surface; 7. a knob; 71. a shaft sleeve; 72. a rotating groove; 721. a second rotation plane; 73. a baffle; 8. a potentiometer; 9. and a main control board.

Detailed Description

Exemplary embodiments that embody features and advantages of the present utility model will be described in detail in the following description. It will be understood that the utility model is capable of various modifications in various embodiments, all without departing from the scope of the utility model, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The temperature controller of the existing refrigeration equipment usually adopts a mechanical temperature controller or an electronic temperature controller, wherein the temperature control precision of the refrigeration equipment adopting the mechanical temperature controller is not high, the error range is large, and meanwhile, the mechanical temperature controller is not stable enough to adjust. Therefore, the mechanical temperature controller of the existing refrigeration equipment has the problems of inaccurate temperature control and unstable adjustment.

The refrigerating equipment of the embodiment of the utility model can be refrigerating cabinets such as a refrigerator, a hall bar cabinet and the like, and the refrigerator is taken as an example to describe the structural principle of the refrigerating equipment of the embodiment of the utility model in detail.

For convenience of description, unless otherwise specified, the directions of up, down, left, right, front and rear are all referred to herein by referring to the state of the temperature control apparatus when in use. The direction of the temperature control device facing the user is taken as a front side direction, and the direction facing away from the user is taken as a rear side direction.

Fig. 1 is a schematic view illustrating a structure of a refrigerator according to an embodiment of the present utility model.

Referring to fig. 1, a refrigerator according to an embodiment of the present utility model mainly includes a refrigerator body 1 and a door body 11.

Wherein, the box body 1 adopts a cuboid hollow structure. It will be appreciated that the case 1 may also be a hollow housing structure of other shapes.

A plurality of mutually separated refrigerating compartments (not shown in the figure) can be arranged in the box body 1, and each separated refrigerating compartment can be used as an independent storage space, such as a freezing chamber, a refrigerating chamber, a fresh-keeping chamber, a temperature changing chamber and the like, so as to meet different refrigerating demands of freezing, refrigerating, fresh-keeping, temperature changing and the like according to different food types, and store the foods. The refrigerating compartments can be arranged in a vertically separated mode or in a left-right separated mode.

The front side of the box body 1 is provided with a door body 11 for opening and closing the refrigeration compartment. The door body 11 and the box body 1 can be connected through a hinge, so that the door body 11 of the refrigerator can rotate around the axis, the door body 11 of the refrigerator can be opened and closed, and the corresponding refrigeration compartment can be opened and closed. It is understood that the door 11 may be provided in plurality and in one-to-one correspondence with the refrigerating compartments. A plurality of door bodies 11 can also simultaneously open and close one refrigerating compartment.

Fig. 2 is a schematic diagram of the temperature control device 20 in fig. 1. Fig. 3 is an exploded view of fig. 2. Fig. 4 is a schematic view of the structure of a portion in fig. 3. Fig. 5 is an exploded view of fig. 4. Fig. 6 is a schematic view of a portion of the structure of fig. 4 from another perspective. Fig. 7 is an enlarged view of fig. 6. Fig. 8 is a schematic structural view of the control panel 4 in fig. 6. Fig. 9 is a cross-sectional view of fig. 4. Fig. 10 is a cross-sectional view of fig. 9 with the main control board 9 and potentiometer 8 removed.

Referring to fig. 2 to 10, a temperature control device 20 is disposed in the case 1, and the temperature control device 20 is used for controlling and changing the temperature in the refrigerator to control the temperature in the refrigerator.

In some embodiments, the temperature control device 20 mainly includes a box 3, a control panel 4, a fixing base 5, a rotating shaft member 6, a knob 7, a potentiometer 8 and a main control board 9.

Wherein, be equipped with the installation space in the box body 3, still be equipped with forward opening on the box body 3. The installation space of the box body 3 is used for accommodating the potentiometer 8, the main control board 9, the rotating shaft piece 6 and the fixed seat 5.

The front side of box body 3 is located to control panel 4, and control panel 4 can cover the opening part of establishing at box body 3 to install potentiometre 8, main control board 9, pivot spare 6 and fixing base 5 in box body 3. The control panel 4 is provided with a through hole 41 penetrating both front and rear sides of the control panel 4, and the inside of the case 3 communicates with the front side of the control panel 4 through the through hole 41.

The rotating shaft member 6 is arranged inside the box body 3, the rotating shaft member 6 is arranged at the rear side of the control panel 4, and the front end of the rotating shaft member 6 is exposed out of the front side of the control panel 4 through the through hole 41.

The knob 7 is rotatably provided on the front side of the control panel 4, and the knob 7 is connected to the front end of the shaft member 6 through a through hole 41, so that the shaft member 6 can rotate synchronously with the rotation of the knob 7.

Referring to fig. 8, in some embodiments, the potentiometer 8 is disposed at the rear side of the rotating shaft member 6, the potentiometer 8 is connected to the rear end of the rotating shaft member 6, and the potentiometer 8 can rotate synchronously with the rotation of the rotating shaft member 6, so that the knob 7 can drive the internal element of the potentiometer 8 to rotate synchronously through the rotating shaft member 6, thereby changing the resistance of the potentiometer 8 through rotation, and further changing the temperature in the refrigerator, so as to realize temperature control in the refrigerator.

Fig. 11 is a schematic structural view of the shaft member 6 in fig. 3 at another view angle. Fig. 12 is a front view of fig. 11. Fig. 13 is a cross-sectional view of fig. 12.

Referring to fig. 3 to 13, in some embodiments, the fixing base 5 is disposed inside the box 3, and the fixing base 5 is disposed at a rear side of the control panel 4, and an axle hole 51 is disposed on the fixing base 5, the axle hole 51 is coaxial with the via hole 41, and the axle hole 51 communicates with front and rear sides of the control panel 4 through the via hole 41. The front end of the rotating shaft member 6 is exposed to the front side of the control panel 4 through the shaft hole 51, so that the rotating shaft member 6 can synchronously rotate with the knob 7 by being connected with the knob 7 through the shaft hole 51.

In other embodiments, the fixing base 5 is disposed on the control panel 4, and the fixing base 5 and the control panel 4 are integrally formed, that is, the via hole 41 is also the shaft hole 51.

Referring to fig. 6 to 13, in some embodiments, the control panel 4 is provided with a positioning hole 42, and the positioning hole 42 is disposed on a peripheral side of the shaft hole 51. Meanwhile, a positioning column 52 is arranged on the periphery of the fixed seat 5, and the positioning column 52 extends forwards along the axial direction of the shaft hole 51. The positioning column 52 corresponds to the positioning hole 42, and the positioning column 52 can extend into the positioning hole 42, so that the limiting fixing seat 5 can only move back and forth relative to the control panel 4, and the stability of the previous connection of the fixing seat 5 and the control panel 4 is improved.

In some embodiments, the positioning holes 42 are multiple, the positioning holes 42 are circumferentially arranged on the periphery of the shaft hole 51, the positioning columns 52 are multiple, and the positioning columns 52 are in one-to-one correspondence with the positioning holes 42, so that the stability of connection between the fixing seat 5 and the control panel 4 is further improved.

Referring to fig. 6 to 8, in some embodiments, the control panel 4 is provided with a bayonet 43, and the bayonet 43 is located at a periphery of the shaft hole 51. Meanwhile, the outer periphery of the fixing seat 5 is provided with a clamping arm 53, and the clamping arm 53 extends forwards along the axial direction of the shaft hole 51. The outer wall of the front end of the clamping arm 53 is convexly provided with a clamping protrusion 54. The clamping convex 54 corresponds to the bayonet 43, and after the clamping arm 53 passes through the bayonet 43, the clamping convex 54 can be clamped on the front end surface of the bayonet 43, so that the fixing seat 5 can be limited to move backwards, and the stability of connection between the fixing seat 5 and the control panel 4 is improved.

In some embodiments, the plurality of bayonets 43 and the plurality of bayonet protrusions 54 are respectively provided, the plurality of bayonets 43 are circumferentially arranged on the circumference of the shaft hole 51, and the plurality of bayonet protrusions 54 are in one-to-one correspondence with the plurality of bayonets 43, so that the stability of the connection between the fixing base 5 and the control panel 4 is further improved.

Referring to fig. 6 to 13, in some embodiments, a limiting post 55 extending forward is further disposed on the outer periphery of the fixing base 5, and the limiting post 55 is spaced from the clamping arm 53. The front end of the limiting post 55 abuts against the rear surface of the control panel 4, that is, when the fixing seat 5 moves forward, the limiting post 55 can abut against the control panel 4 to limit the fixing seat 5 to move forward, so that the stability of connection between the fixing seat 5 and the control panel 4 is improved.

In some embodiments, the positioning post 52 is disposed at a front end of the spacing post 55 and extends forward from the front end of the spacing post 55 through the positioning hole 42.

It should be noted that, in other embodiments, the positioning posts 52 may be spaced apart from the limiting posts 55.

Fig. 14 is a schematic structural view of the shaft member 6 in fig. 3 at another view angle.

Referring to fig. 14, in some embodiments, a shaft portion 61 is disposed on the shaft member 6, the shaft portion 61 is in a shaft shape, and the shaft portion 61 is disposed at the axis of the shaft hole 51. The front end of the rotation shaft portion 61 is exposed to the front side of the control panel 4 through the shaft hole 51 and the through hole 41, and the knob 7 is connected to the front end of the rotation shaft portion 61 so that the rotation shaft portion 61 can be rotated in synchronization with the rotation of the knob 7. The rear end of the rotating shaft portion 61 is connected with the potentiometer 8, when the knob 7 rotates, the rotating shaft portion 61 can synchronously rotate along with the knob 7, and the rotation of the rotating shaft portion 61 drives the internal elements of the potentiometer 8 to synchronously rotate, so that the resistance of the potentiometer 8 is changed through rotation, the temperature in the refrigerator is changed, and the temperature control in the refrigerator is realized.

In some embodiments, the shaft member 6 further includes a stopper cover 62 integrally formed with the shaft portion 61. The stopper cover 62 extends radially outwardly from the outer wall of the shaft portion 61, the stopper cover 62 is of an annular plate-like structure, and the stopper cover 62 is circumferentially disposed on the outer peripheral wall of the shaft portion 61. So that the limit cover 62 can be stably driven to rotate when the knob 7 drives the rotation shaft portion 61 to rotate.

It should be noted that, in other embodiments, the limiting cover 62 may also have a square or other shape.

In some embodiments, the shaft portion 61 includes a first shaft portion 611 and a second shaft portion 612, the first shaft portion 611 and the second shaft portion 612 being coaxially disposed. The first rotating shaft portion 611 is arranged at the front side of the limit cover 62, and the first rotating shaft portion 611 extends forwards from the center of the front surface of the limit cover 62; the second rotating shaft portion 612 is disposed at the rear side of the limiting cover 62, and the second rotating shaft portion 612 extends rearward from the center of the rear surface of the limiting cover 62. The front end of the first rotating shaft portion 611 passes through the shaft hole 51 and is exposed at the front end of the control panel 4, the knob 7 is connected with the front end of the first rotating shaft portion 611 through the shaft hole 51, the potentiometer 8 is connected with the rear end of the second rotating shaft portion 612, the knob 7 drives the first rotating shaft portion 611 to rotate so as to enable the second rotating shaft portion 612 to synchronously rotate, and further the second rotating shaft portion 612 drives the internal element of the potentiometer 8 to synchronously rotate so as to enable the resistance of the potentiometer 8 to change, and further the temperature in the refrigerator is changed, and temperature control in the refrigerator is achieved.

It should be noted that, in other embodiments, the first rotating shaft portion 611 and the second rotating shaft portion 612 may be integrally formed.

In some embodiments, the rotating shaft member 6 further includes a limiting arm 63, where the limiting arm 63 extends forward from the front surface of the limiting cover 62 along the axial direction of the rotating shaft portion 61, and a limiting protrusion 64 is protruding on an outer wall of the front end of the limiting arm 63, and the limiting arm 63 is provided with a plurality of limiting arms 63 circumferentially arranged around the outer periphery of the first rotating shaft portion 611. The plurality of stopper arms 63 are located on the same circumference of the rotation shaft portion 61. When the knob 7 drives the first rotating shaft portion 611 to rotate, the plurality of limiting arms 63 can synchronously rotate along with the rotation of the first rotating shaft portion 611.

In some embodiments, the limiting arm 63 can pass through the shaft hole 51, the outer wall of the limiting arm 63 is attached to the inner wall of the shaft hole 51, and the inner wall of the shaft hole 51 is circular, so that when the knob 7 is rotated, the first rotating shaft portion 611 can drive the limiting arm 63 to rotate along the circular inner wall of the shaft hole 51, thereby stably limiting the first rotating shaft portion 611 to rotate at the axis center of the shaft hole 51, improving the rotation stability of the rotating shaft portion 61, further providing the stability of synchronous rotation of the internal elements of the potentiometer 8, and further realizing the improvement of the temperature control precision of the temperature control device 20.

It should be noted that in other embodiments, the retaining arm 63 may also extend axially forward from the rear surface of the retaining cap 62 or elsewhere.

Fig. 15 is a schematic view of the installation structure of the shaft member 6 and the fixing base 5. Fig. 16 is a cross-sectional view of fig. 15.

Referring to fig. 10 to 16, in some embodiments, a guiding surface 511 is provided on an inner wall of the shaft hole 51, and the guiding surface 511 is provided at a rear end of the inner wall of the shaft hole 51. The outer side of the limit projection 64 is provided with an inclined surface 641, and the inclined surface 641 is formed by inclining the outer side of the limit projection 64 inward in the axially forward direction. The inclined surface 641 is engaged with the guide surface 511, and when the stopper arm 63 passes through the shaft hole 51, the inclined surface 641 is abutted against the guide surface 511 so that the stopper projection 64 passes forward through the shaft hole 51 along the guide surface 511.

Referring to fig. 10 to 16, in some embodiments, the fixing base 5 is provided with a stopping surface 56. The abutment surface 56 is disposed at the rear end of the fixing base 5, the abutment surface 56 is disposed at the rear end surface of the shaft hole 51, and when the first rotating shaft portion 611 moves forward after the first rotating shaft portion 611 passes through the shaft hole 51, the front surface of the limiting cover 62 abuts against the abutment surface 56 to limit the forward movement of the first rotating shaft portion 611.

In some embodiments, the fixing base 5 is provided with a clamping surface 57. The clamping surface 57 is located on the front end face of the shaft hole 51, the limiting arm 63 passes through the shaft hole 51, the limiting protrusion 64 of the limiting arm 63 abuts against the clamping surface 57, namely is clamped with the clamping surface 57, and when the first rotating shaft portion 611 moves backwards through the shaft hole 51, the limiting protrusion 64 can be clamped with the clamping surface 57, so that the first rotating shaft portion 611 can be prevented from moving backwards.

Therefore, the stopper surface 56 and the engagement surface 57 can limit the rotation shaft portion 61 in the axial direction, prevent the rotation shaft portion 61 from moving in the axial direction, increase the stability of the rotation shaft portion 61 when rotating, and further stably drive the potentiometer 8 to rotate, and stably change the resistance of the potentiometer 8, so that the temperature control device 20 improves the temperature control accuracy of the temperature control device 20.

In some embodiments, the front surface of the fixing base 5 is provided with a protruding rib 58 in a protruding manner, and the protruding rib 58 is disposed on the front end surface of the shaft hole 51, that is, the protruding rib 58 is disposed on the clamping surface 57 in a protruding manner. The bead 58 is annular and circumferentially arranged on the peripheral side of the shaft hole 51. After the limiting arm 63 passes through the shaft hole 51, the limiting protrusion 64 abuts against the protruding rib 58, that is, the limiting protrusion 64 is clamped with the protruding rib 58, so that the first rotating shaft 611 can be prevented from moving backwards, and when the knob 7 drives the first rotating shaft 611 to coaxially rotate, the limiting protrusion 64 abuts against the protruding rib 58 to rotate, so that the rotation stability of the first rotating shaft 611 can be improved.

In some embodiments, the rear surface of the fixing base 5 is provided with a boss 59 in a protruding manner, the boss 59 is annular and is circumferentially arranged on the circumferential side of the shaft hole 51, the guiding surface 511 is located on the inner circumferential wall of the boss 59, and the abutment surface 56 is provided at the rear end of the boss 59 and is used for abutting against the front end surface of the limiting cover 62 to limit the forward movement of the first rotating shaft 611, so that the rotating stability of the first rotating shaft 611 can be increased when the knob 7 rotates.

Fig. 17 is a schematic view of the knob 7 of fig. 3 in another view.

Referring to fig. 2 to 17, in some embodiments, a rotary groove 44 is concavely formed on the front surface of the control panel 4, the rotary groove 44 is a circular groove, the outer contour of the knob 7 is also circular, the rotary groove 44 is adapted to the knob 7, and the knob 7 is rotatably assembled in the rotary groove 44. The through hole 41 is provided on the groove rear wall of the rotation groove 44, and the through hole 41 penetrates the groove rear wall of the rotation groove 44 to expose the front end of the first rotation shaft portion 611, and the knob 7 is fitted in the rotation groove 44 to be connected to the front end of the first rotation shaft portion 611. Through the assembly of rotary groove 44 to knob 7, carry out spacingly to the radial of knob 7, avoid the radial removal of knob 7 to stability when having increased the knob 7 rotation, and then increased first spindle portion 611 and driven potentiometre 8 pivoted stability, and then can stably drive potentiometre 8 to rotate, make the resistance of potentiometre 8 stably change, thereby improved temperature control device 20's stability, also improved temperature control device 20's accuse temperature precision.

Referring to fig. 6 and 7, in some embodiments, the bayonet 43 and the positioning hole 42 are disposed on the rear wall of the rotary slot 44 and surround the periphery of the via hole 41, so as to improve the flatness of the front surface of the control panel 4 and the appearance of the control panel 4.

Referring to fig. 14 and 17, in some embodiments, a shaft sleeve 71 is provided on the knob 7, the shaft sleeve 71 protrudes rearward from the rear surface of the knob 7, and the shaft sleeve 71 extends rearward along the axial direction of the knob 7. The shaft sleeve 71 is internally provided with a rotating groove 72, the rotating groove 72 corresponds to the front end of the first rotating shaft portion 611, when the knob 7 is assembled in the rotating groove 44, the front end of the first rotating shaft portion 611 extends into the rotating groove 72, so that the shaft sleeve 71 is sleeved at the front end of the first rotating shaft portion 611, and therefore the first rotating shaft portion 611 can be connected with the shaft sleeve 71, and when the knob 7 rotates, the first rotating shaft portion 611 can synchronously rotate under the drive of the shaft sleeve 71.

In some embodiments, the outer peripheral wall of the front end of the first rotating shaft 611 is provided with a first rotating plane 6111, and the peripheral wall of the rotating groove 72 is provided with a second rotating plane 721 matching the first rotating plane 6111. When the front end of the first rotating shaft portion 611 extends into the rotating groove 72, the first rotating plane 6111 is attached to the second rotating plane 721, so that the knob 7 and the first rotating shaft portion 611 can rotate synchronously, the rotating precision of the knob 7 driving the first rotating shaft portion 611 can be improved, the rotating precision of the knob 7 driving the positioner can be improved, and the temperature control precision of the temperature control device 20 can be improved.

It should be noted that, in other embodiments, the rear surface of the knob 7 may be directly recessed with a rotation groove 72, and the front end of the first rotation shaft 611 extends into the rotation groove 72 to connect with the knob 7.

It should be further noted that, in other embodiments, a plurality of first rotation planes 6111 may be provided, and the second rotation planes 721 are in one-to-one correspondence with the first rotation planes 6111.

Referring to fig. 8 and 17, in some embodiments, a limiting rib 441 is disposed on a rear wall of the rotary slot 44 in a protruding manner, the limiting rib 441 is arc-shaped, and the limiting rib 441 is disposed around a periphery of the via hole 41. The back surface of the knob 7 is convexly provided with a blocking piece 73, and the blocking piece 73 can be propped against two ends of the limiting rib 441 when the knob 7 rotates forwards or backwards. Specifically, when the knob 7 is rotated forward until the blocking piece 73 abuts against one end of the limiting rib 441, the maximum value of the forward rotation angle of the knob 7 is the maximum value of the temperature that can be adjusted by the temperature adjusting device. When the knob 7 rotates reversely until the blocking piece 73 abuts against the other end of the limiting rib 441, the maximum value of the reverse rotation angle of the knob 7 is the minimum value of the temperature which can be regulated by the temperature regulating device.

It should be noted that, in other embodiments, the limiting rib 441 may be disposed on other sidewalls of the rotating slot 44.

Fig. 18 is a schematic structural diagram of the main control board 9 in fig. 3 under another view angle.

Referring to fig. 8 and 18, in some embodiments, the main control board 9 is disposed at the rear side of the rotating shaft member 6, the potentiometer 8 is disposed at the rear side of the main control board 9, the potentiometer 8 is connected to the main control board 9, and the rear end of the second rotating shaft portion 612 passes through the main control board 9 to be connected to the potentiometer 8. When the knob 7 rotates, the first rotating shaft part 611 and the second rotating shaft part 612 synchronously rotate, and the second rotating shaft part 612 drives the internal elements of the potentiometer 8 to synchronously rotate, so that the resistance of the potentiometer 8 changes, and the temperature control of the refrigerating compartment is realized by transmitting information to the main control board 9.

It should be noted that, in other embodiments, the potentiometer 8 may also be disposed on the front side of the main control board 9.

As can be seen from the technical scheme, the embodiment of the utility model has at least the following advantages and positive effects:

the temperature control device 20 provided by the utility model comprises a rotating shaft part 61, a limiting cover 62 and a limiting arm 63 which are integrally formed on a rotating shaft member 6, wherein a knob 7 is connected with the front end of the rotating shaft part 61, and a potentiometer 8 is connected with the rear end of the rotating shaft part 61, so that when the knob 7 is rotated, the rotating shaft part 61 and the internal elements of the potentiometer 8 can be driven to synchronously rotate, and the potentiometer 8 can regulate the temperature. The limiting arms 63 are arranged around the periphery of the rotating shaft portion 61, the outer walls of the limiting arms 63 are attached to the inner walls of the shaft holes 51, and when the knob 7 is rotated, the rotating shaft portion 61 can drive the limiting arms 63 to rotate along the inner walls of the shaft holes 51, so that the rotating shaft portion 61 can be limited to rotate at the axis center of the shaft holes 51, the rotation stability of the rotating shaft portion 61 is improved, and the temperature control precision of the temperature control device 20 is further improved. Simultaneously, utilize spacing arm 63 to pass shaft hole 51 on fixing base 5, spacing lid 62 offsets with the rear end face in shaft hole 51, spacing protruding 64 of spacing arm 63 front end offsets with the front end face in shaft hole 51, thereby can make spacing lid 62 and spacing protruding 64 respectively support and lean on the front and back terminal surface in shaft hole 51 and rotate, and then carry out axial spacing to pivot portion 61, prevent pivot portion 61 axial displacement, stability when further increasing pivot portion 61 rotation, and then can stably drive potentiometer 8 rotation, make the resistance of potentiometer 8 stably change, thereby improve temperature control device 20's stability, also improved temperature control device 20's temperature control precision.

While the utility model has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and of limitation. As the present utility model may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (10)

1. A temperature control apparatus, comprising:

a control panel;

the fixed seat is arranged on the control panel, a shaft hole is arranged on the fixed seat, and the shaft hole is communicated with the front side and the rear side of the control panel;

the rotating shaft piece comprises a limiting cover, a limiting arm and a rotating shaft part which are integrally formed; the limit cover extends outwards along the radial direction from the outer wall of the rotating shaft part; the limiting arms extend forwards from the limiting cover along the axial direction of the rotating shaft part, limiting protrusions are convexly arranged on the outer wall of the front end of each limiting arm, a plurality of limiting arms are arranged, and the plurality of limiting arms are circumferentially arranged around the periphery of the rotating shaft part; the rotating shaft part is arranged at the axle center of the axle hole, and the front end of the rotating shaft part is exposed out of the front surface of the control panel; the limiting cover is propped against the rear end face of the shaft hole, the limiting arm penetrates through the shaft hole, the limiting protrusion is propped against the front end face of the shaft hole, and the outer wall of the limiting arm is attached to the inner wall of the shaft hole;

the knob is rotatably arranged on the front side of the control panel and is connected with the front end of the rotating shaft part;

the potentiometer is arranged at the rear side of the rotating shaft part and is connected with the rear end of the rotating shaft part;

the knob can drive the rotating shaft part to coaxially rotate, so that the limiting arm rotates along the inner wall of the shaft hole, and the limiting cover and the limiting boss respectively abut against the front end face and the rear end face of the shaft hole to rotate.

2. The temperature control device according to claim 1, wherein the outer periphery of the fixing base is provided with a clamping arm extending forward along the axial direction of the shaft hole; the outer wall of the front end of the clamping arm is convexly provided with a clamping protrusion;

the control panel is provided with a bayonet corresponding to the clamping protrusion, and the bayonet is positioned on the periphery of the shaft hole;

the clamping arm penetrates through the bayonet, and the clamping protrusion is clamped on the front end face of the bayonet.

3. The temperature control device according to claim 2, wherein the outer periphery of the fixing seat is further provided with a limit post extending forwards, and the limit post is arranged at intervals with the fixing seat;

the front end of the limiting post is propped against the rear surface of the control panel.

4. A temperature control device according to claim 3, wherein the front end of the limit post is provided with a positioning post extending forward along the axial direction of the shaft hole;

the control panel is provided with a positioning hole matched with the positioning column, the positioning hole is positioned on the periphery of the shaft hole, and the positioning hole and the bayonet are arranged at intervals;

the positioning column can extend into the positioning hole, so that the fixing seat moves back and forth relative to the control panel.

5. The temperature control device according to claim 1, wherein the front surface of the fixing seat is provided with a convex rib in a convex manner, the convex rib is arranged on the front end surface of the shaft hole, and the convex rib is annular and is arranged around the periphery of the shaft hole;

the limiting bulge is propped against the convex rib;

when the knob drives the rotating shaft part to coaxially rotate, the limiting protrusion abuts against the convex rib to rotate.

6. The temperature control device according to claim 1, wherein a rotary groove is concavely formed in the front surface of the control panel, and a via hole is formed in the rotary groove;

the knob is rotatably arranged in the rotary groove;

the front end of the rotating shaft part is connected with the knob through the through hole.

7. The temperature control device according to claim 6, wherein at least one first rotation plane is provided on an outer peripheral wall of a front end of the rotation shaft portion;

the rear surface of the knob is provided with a rotating groove; a second rotating plane matched with the first rotating plane is arranged on the peripheral side wall of the rotating groove;

the knob is connected with the front end of the rotating shaft part through the rotating groove;

when the front end of the rotating shaft part stretches into the rotating groove, the first rotating plane is attached to the second rotating plane, so that the knob and the rotating shaft part can synchronously rotate.

8. The temperature control device according to claim 7, wherein the rotating shaft portion includes a first rotating shaft portion and a second rotating shaft portion; the first rotating shaft part extends forwards from the front surface of the limit cover, and the second rotating shaft part extends backwards from the rear surface of the limit cover;

the first rotating plane is arranged on the outer peripheral wall of the first rotating shaft part, and the front end of the first rotating shaft part is connected with the knob; the rear end of the second rotating shaft part is connected with the potentiometer.

9. The temperature control device of claim 1, further comprising a main control board and a box;

the main control board is arranged at the rear side of the rotating shaft piece; the potentiometer is arranged at the rear side of the main control board and is connected with the main control board;

the box body is used for installing the main control board, the rotating shaft part, the fixing seat and the potentiometer, the front side of the box body is opened, and the control panel covers and locates the opening part of the box body.

10. A refrigeration appliance, comprising:

a case configured as an outer case of the refrigeration apparatus;

the box liner is arranged in the box body, and a refrigeration compartment is formed in the box liner;

a temperature control device provided in the case, the temperature control device employing the temperature control device according to any one of claims 1 to 9, the temperature control device being for adjusting the temperature in the cooling compartment.