Safety switch structure of heat preservation drawer

Abstract

The utility model relates to the technical field of heat preservation drawers, and particularly discloses a safety switch structure of a heat preservation drawer, which comprises a cabinet body with an opening at one end; the drawer assembly comprises a box body which is slidably arranged in the cabinet body, and the box body can slide to an open state or a closed state; the switch assembly has a trigger state and a power-off state, the switch assembly comprises a microswitch arranged at the bottom of the box body and a trigger ejection block arranged on the cabinet body, and when the box body is in the closed state, the trigger ejection block ejects an elastic piece of the microswitch so that the switch assembly can be in the trigger state; and when the box body is in an open state, the triggering top block is separated from the elastic sheet of the microswitch, so that the switch assembly is in a power-off state. According to the utility model, the problems that the conventional heat preservation drawer is powered on and off by using a magnetic switch, and the magnetic switch is easy to break down and is insufficient in reliability in the frequent use process are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heat preservation drawer, especially a safety switch structure of heat preservation drawer. BACKGROUND

[0002] In daily life, heat preservation drawers are widely used in kitchens, commercial display cabinets and other scenarios for storing food, medicine or other items that need to be kept warm. In order to ensure safety and energy saving, the heating pipe and circulating fan need to be powered off when the heat preservation drawer is pulled open.

[0003] Currently, magnetic switches are commonly used for power on and off. However, magnetic switches are prone to failure during frequent use, have insufficient reliability, and may damage equipment or waste energy, thereby causing electrical safety hazards. SUMMARY

[0004] To solve the problem of existing heat preservation drawers using magnetic switches for power on and off, and the problem of magnetic switches being prone to failure during frequent use and having insufficient reliability, the utility model provides a safety switch structure of heat preservation drawer.

[0005] To solve the above problems, the utility model adopts the following technical solutions:

[0006] The embodiment of the utility model provides a safety switch structure of heat preservation drawer, comprising:

[0007] A cabinet body, one end of the cabinet body is open;

[0008] A drawer assembly, the drawer assembly comprises a box body slidably arranged in the cabinet body, and the box body can be slid to an open state or a closed state;

[0009] A switch assembly, the switch assembly has a triggering state and a power-off state, the switch assembly comprises a micro switch arranged at the bottom of the box body and a triggering top block arranged at the cabinet body, when the box body is in the closed state, the triggering top block lifts the spring of the micro switch, so that the switch assembly is in the triggering state; when the box body is in the open state, the triggering top block is separated from the spring of the micro switch, so that the switch assembly is in the power-off state.

[0010] According to some embodiments of the utility model, the position avoiding structure is a position avoiding groove.

[0011] According to some embodiments of the utility model, the position avoiding groove comprises a first position avoiding groove arranged at the bottom of the drawer assembly.

[0012] According to some embodiments of the utility model, the position avoiding groove further comprises a second position avoiding groove for the triggering top block to pass through, and the first position avoiding groove is connected with the second position avoiding groove.

[0013] According to some embodiments of the present application, the box is provided with a fixing plate for fixing the micro switch.

[0014] According to some embodiments of the present application, the fixing plate is vertically arranged on the sidewall of the avoiding groove.

[0015] According to some embodiments of the present application, the trigger top block comprises a fixing part, a transverse part and a guide part for guiding the up and down movement of the spring of the micro switch.

[0016] According to some embodiments of the present application, the guide part gradually inclines downward along the opening direction of the box.

[0017] According to some embodiments of the present application, the guide part comprises a first inclined part and a second inclined part connected with each other, the second inclined part is connected with the transverse part, and the transverse part is connected with the fixing part.

[0018] According to some embodiments of the present application, the inclination angle of the first inclined part is greater than that of the second inclined part.

[0019] The present application has at least the following advantages: the present application triggers the micro switch by the trigger top block, so that the mechanical structure is more involved in the process of switch control, compared with the traditional magnetic switch, the mechanical structure is more reliable, and is not prone to failure after multiple uses, thereby improving the reliability and safety. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a partial sectional view of an embodiment of the present application;

[0021] Figure 2 is a lateral sectional view of an embodiment of the present application;

[0022] Figure 3 is a schematic diagram of the drawer in an open state of an embodiment of the present application;

[0023] Figure 4 is a schematic diagram of the drawer in a closed state of an embodiment of the present application. DETAILED DESCRIPTION

[0024] The present application provides the following description with reference to the accompanying drawings to help comprehensively understand various embodiments of the present application as defined by the claims and their equivalents. The description includes various specific details to help understanding, but these details should be regarded as just exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the present application.

[0025] In the description of the utility model, the orientation description, such as the orientation or positional relation of the indication of up, down, front, back, left, right etc. for the orientation or positional relation shown in the drawing, is only for the convenience of describing the utility model and simplifying the description, and is not to indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore can not be understood as limiting the utility model.

[0026] It should be understood that when an element (e.g., a first element) is "connected" with another element (e.g., a second element), the element can be directly connected with the other element, or there can be an intervening element (e.g., a third element) between the element and the other element.

[0027] The embodiment of the utility model provides a safe switch structure of heat preservation drawer, as shown in the figure, comprising: Figures 1-4 As shown in the figure, comprising:

[0028] Cabinet 100, one end of cabinet 100 is open;

[0029] Drawer assembly 200, drawer assembly 200 includes the box 210 slidably arranged in cabinet 100, and the box 210 can be slid to open state or closed state;

[0030] Switch assembly 300, switch assembly 300 has trigger state and power-off state, and switch assembly 300 includes microswitch 310 arranged at the bottom of box 210 and trigger top block 320 arranged at cabinet 100, when box 210 is in closed state, trigger top block 320 lifts the spring of microswitch 310, to make switch assembly 300 be in trigger state;When box 210 is in open state, trigger top block 320 is separated from the spring of microswitch 310, to make switch assembly 300 be in power-off state.

[0031] Cabinet 100 one end opening, for accommodating drawer assembly 200.Drawer assembly 200 includes a box 210 slidably arranged in cabinet 100.Box 210 is used to store articles.Switch assembly 300 is used to control the state of drawer.It has two states:

[0032] Trigger state: when the drawer is in closed state, microswitch 310 is triggered, and the heat preservation drawer is powered on.

[0033] Power-off state: when the drawer is in open state, microswitch 310 is separated from trigger top block 320.

[0034] The micro switch 310 is installed at the bottom of the box 210, and the state switching is realized by the contact between the spring and the trigger top block 320. The trigger top block 320 is installed on the cabinet 100 and is used for triggering the micro switch 310. The micro switch 310 is arranged at the bottom of the box 210, so that the influence of the micro switch 310 on the self-locking stroke of the guide rail is reduced. The switch control is realized by the mechanical structure, and the safety hidden danger caused by the non-closed drawer is avoided. The switch assembly 300 of the mechanical structure has high reliability. The combination of the micro switch 310 and the trigger top block 320 is simple in design and easy to realize.

[0035] The working principle of the utility model is as follows:

[0036] When the drawer is pushed back, the micro switch 310 at the bottom of the box 210 contacts the trigger top block 320 on the cabinet 100, the trigger top block 320 lifts the spring of the micro switch 310, and the switch assembly 300 is in the triggered state.

[0037] When the drawer is pulled out, the micro switch 310 leaves the trigger top block 320, the spring returns to the original position, and the switch assembly 300 is in the power-off state.

[0038] In some embodiments, one end of the box 210 extending into the cabinet 100 is provided with a containing cavity, the micro switch 310 is arranged in the containing cavity, and the side wall of the containing cavity is provided with an avoidance structure 220 for avoiding the micro switch 310 and the trigger top block 320.

[0039] The avoidance structure 220 is used for ensuring that the trigger top block 320 located on the cabinet 100 can contact the micro switch 310 located in the containing cavity of the box 210, and ensuring that the switch can work normally.

[0040] Further, the avoidance structure 220 is an avoidance groove.

[0041] In some embodiments, the avoidance groove includes a first avoidance groove 230 arranged at the bottom of the drawer assembly 200.

[0042] The first avoidance groove 230 is arranged at the bottom of the drawer assembly 200 (i.e. the box 210) and is located near the mounting position of the micro switch 310. When the drawer assembly 200 slides in the cabinet 100, the first avoidance groove 230 ensures that the trigger top block 320 can smoothly lift the spring of the micro switch 310.

[0043] In some embodiments, the avoidance groove further includes a second avoidance groove 240 for the trigger top block 320 to pass through, and the first avoidance groove 230 is connected with the second avoidance groove 240.

[0044] The second avoidance slot 240 is arranged on the cabinet 100 and connected with the first avoidance slot 230. It is located inside the cabinet 100 and corresponds to the sliding path of the drawer assembly 200. The main function of the second avoidance slot 240 is to provide a path for the trigger top block 320 to pass through. When the drawer assembly 200 slides in the cabinet 100, the trigger top block 320 enters the first avoidance slot 230 through the second avoidance slot 240, thereby realizing the contact or separation with the spring of the micro switch 310.

[0045] When the drawer assembly 200 is pushed back, the trigger top block 320 enters the first avoidance slot 230 along the second avoidance slot 240 and lifts the spring of the micro switch 310, so that the switch assembly 300 is in the triggered state. When the drawer assembly 200 is pulled out, the trigger top block 320 exits the first avoidance slot 230 along the second avoidance slot 240, and the spring returns to its original position, so that the switch assembly 300 is in the power-off state.

[0046] In some embodiments, a sealing strip or dust cover can be added at the opening of the avoidance slot to prevent dust or liquid from entering and affecting the performance and insulation effect of the switch assembly 300.

[0047] In some embodiments, the box body 210 is provided with a fixing plate 250 for fixing the micro switch 310.

[0048] The fixing plate 250 provides a stable mounting platform for the micro switch 310, so that it can accurately cooperate with the trigger top block 320 and ensure that the micro switch 310 will not be displaced or loose due to vibration or impact during the sliding process of the drawer assembly 200. The fixing plate 250 can be fixed on the bottom of the box body 210 by screws, buckles or welding, etc., to ensure its firmness. The fixing plate 250 is usually installed near the avoidance structure 220 at the bottom of the box body 210, to ensure that the spring of the micro switch 310 can smoothly contact the trigger top block 320.

[0049] Further, the bottom of the micro switch 310 is higher than the bottom of the box body 210.

[0050] The fixing plate 250 makes the installation of the micro switch 310 higher than the bottom of the box body 210, which can avoid the spring of the micro switch 310 being jammed by the folded edge of the box body 210 during installation.

[0051] In some embodiments, the fixing plate 250 is vertically arranged on the side wall of the avoidance slot.

[0052] The fixing plate 250 is vertically arranged on the side wall of the avoidance slot, which makes the installation of the micro switch 310 more stable and provides a clear guide for the movement of the spring.

[0053] In some embodiments, the trigger top block 320 includes a fixed part 330, a transverse part 370, and a guide part 340 for guiding the up-and-down movement of the spring of the micro switch 310.

[0054] The fixed part 330 is used to fix the trigger top block 320 on the cabinet body 100, ensuring its stability during the sliding process of the drawer. The fixed part 330 can be installed on the cabinet body 100 by screws, buckles, or other mechanical fixing methods, ensuring the stability of the trigger top block 320. The guide part 340 is used to guide the up-and-down movement of the spring of the micro switch 310, ensuring that the spring can smoothly contact or separate from the trigger top block 320. The design of the guide part 340 is usually a slope, an arc, or other guiding structure, used to guide the up-and-down movement of the spring of the micro switch 310 during the sliding process of the drawer. This design can reduce the friction between the spring and the trigger top block 320, improving the service life of the switch assembly 300.

[0055] Further, the guide part 340 gradually tilts downward along the opening direction of the box body 210.

[0056] The tilt direction of the guide part 340 is consistent with the sliding direction of the drawer. When the drawer is pulled out, the guide part 340 gradually tilts downward, guiding the spring to move downward. When the drawer is pushed back, the spring moves upward along the slope of the guide part 340. This inclined design can reduce the friction between the spring and the guide part 340, while ensuring that the spring is more smooth during contact and separation, avoiding the phenomenon of jamming.

[0057] Further, the guide part 340 includes a first inclined part 350 and a second inclined part 360 connected in series, the second inclined part 360 is connected with the transverse part 370, and the transverse part 370 is connected with the fixed part 330.

[0058] The first inclined part 350 is used to initially guide the spring to move upward. The second inclined part 360 further guides the spring, ensuring a smooth transition to the trigger position. The transverse part 370 is connected with the fixed part 330, used to stabilize the overall structure of the trigger top block 320.

[0059] When the drawer assembly 200 starts to push back, the spring first contacts the first inclined part 350, guiding the spring to start moving upward. The first inclined part 350 has a relatively large inclination angle, which can quickly guide the spring into motion. After the spring is guided by the first inclined part 350, the second inclined part 360 further guides the spring smoothly, ensuring that it reaches the trigger position smoothly. The second inclined part 360 has a relatively small inclination angle, which can reduce the friction and impact of the spring during movement. The transverse part 370 is connected with the fixed part 330, providing stable support, ensuring the overall structural strength of the trigger top block 320. The design of the transverse part 370 can increase the stability of the trigger top block 320, while providing a smooth transition area for the spring.

[0060] Still further, the inclination angle of the first inclined portion 350 is greater than the inclination angle of the second inclined portion 360.

[0061] The terms and words used in the above description and claims are not limited to the bibliographical meanings, but are merely used to enable a clear and complete understanding of the present application by those skilled in the art. Accordingly, it should be apparent to those skilled in the art that the above description is provided only to illustrate the embodiments of the present application and not to limit the present application defined by the appended claims and their equivalents.

Claims

1. A safety switch structure for an insulated drawer, characterized in that, The utility model relates to a cabinet, and particularly relates to a cabinet with a drawer assembly and a switch assembly. The cabinet (100) has an open end; The drawer assembly (200) comprises a box (210) slidably arranged in the cabinet (100), and the box (210) can be slid to an open state or a closed state; The switch assembly (300) has a triggering state and a power-off state, and the switch assembly (300) comprises a micro switch (310) arranged at the bottom of the box (210) and a triggering top block (320) arranged on the cabinet (100), when the box (210) is in the closed state, the triggering top block (320) lifts the spring of the micro switch (310) to make the switch assembly (300) in the triggering state; when the box (210) is in the open state, the triggering top block (320) is separated from the spring of the micro switch (310) to make the switch assembly (300) in the power-off state.

2. The safety switch structure for a heat retaining drawer according to claim 1, wherein The box (210) has an accommodating cavity arranged at one end of the box (210) extending into the cabinet (100), the micro switch (310) is arranged in the accommodating cavity, and the side wall of the accommodating cavity is provided with a position-avoiding structure (220) for avoiding the micro switch (310) and the triggering top block (320).

3. The safety switch structure of a heat preservation drawer according to claim 2, characterized in that, The position-avoiding structure (220) is a position-avoiding groove.

4. The safety switch structure of the heat preservation drawer according to claim 3, characterized in that, The box (210) is provided with a fixing plate (250) for fixing the micro switch (310).

5. The safety switch structure of the heat preservation drawer according to claim 4, characterized in that, The bottom of the micro switch (310) is higher than the bottom of the box (210).

6. The safety switch structure of a thermal insulation drawer according to claim 4, wherein, The fixing plate (250) is vertically arranged on the side wall of the position-avoiding groove.

7. The safety switch structure of a temperature maintaining drawer according to any one of claims 1 to 6, characterized in that, The triggering top block (320) comprises a fixing part (330), a transverse part (370) and a guide part (340) for guiding the spring of the micro switch (310) to move up and down.

8. The safety switch structure of a thermal insulation drawer according to claim 7, wherein, The guide part (340) gradually inclines downward along the opening direction of the box (210).

9. The safety switch structure of a thermal insulation drawer according to claim 8, wherein, The guide part (340) comprises a first inclined part (350) and a second inclined part (360) connected with each other, the second inclined part (360) is connected with the transverse part (370), and the transverse part (370) is connected with the fixing part (330).

10. The safety switch structure of a thermal insulation drawer according to claim 9, wherein, The inclination angle of the first inclined part (350) is greater than the inclination angle of the second inclined part (360).

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