Heating disc mounting structure of vacuum cup and vacuum cup with heating function

Abstract

The utility model relates to the technical field of vacuum cups, in particular to a heating disc mounting structure of a vacuum cup and the vacuum cup with a heating function. A heating assembly and an inner container are arranged in a cup body of the vacuum cup, and the bottom end of the inner container is bent downwards to form an annular looped rib. The heating assembly comprises a heating disc and an electrode for supplying power to the heating disc, the heating disc is connected to the lower portion of the inner container, and the periphery of the heating disc can abut against the side wall of the looped rib; the lower end of the heating disc is connected with an installation support, a gluing groove is defined by the lower end face of the heating disc, the installation support and the looping ribs, and the gluing groove is used for being filled with glass cement, so that the heating disc and the inner container are connected into a whole and matched to form a water containing cavity. According to the technical scheme, the structure capable of installing the heating disc for the vacuum cup made of the glass material is provided, the gluing groove can be formed through cooperation of the heating disc, the installation support and the vacuum cup inner container, and therefore the heating disc can be fixed to the bottom of the vacuum cup made of the glass material conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of thermos cups, in particular to a heating plate mounting structure of a thermos cup and a thermos cup with a heating function. Background Art

[0002] Many people use thermoses to store water in their daily lives, and those who like to drink hot water will choose to use thermoses to prevent the water temperature from dropping. However, the water temperature in a thermos will also drop slowly. Some people use thermoses to store tea, and if the water temperature is low, it will also affect the taste of the drink.

[0003] Therefore, patent application number CN 201620197655.7 also discloses a heating thermos cup and a heating system. This thermos cup can be provided with a heating plate welded at the bottom of the cup, and the heating plate can heat the water in the thermos cup to maintain the water temperature in the thermos cup.

[0004] However, the prior art still has the following deficiencies:

[0005] When installing a heating plate in a current thermos, it's typically welded to the bottom of the thermos' inner liner. This limits the material of the thermos, as glass thermoses can't be welded to the heating plate. However, for many tea drinkers, a glass thermos not only minimizes the taste but also allows for constant monitoring of the tea leaves and liquid, allowing for quick replacement. Furthermore, glass's thermal conductivity is poorer than stainless steel, so drinking from the thermos won't burn your mouth due to the high temperature of the rim. Utility Model Content

[0006] The purpose of the utility model is to provide a heating plate installation structure of a thermos cup and a thermos cup with a heating function.

[0007] The purpose of this utility model is achieved in this way:

[0008] A heating plate mounting structure for a thermos cup, wherein a heating component and an inner liner are arranged in the cup body of the thermos cup, and the bottom end of the inner liner is bent downward to form an annular ring rib;

[0009] The heating assembly includes a heating plate and an electrode for supplying power to the heating plate, wherein the heating plate is connected to the bottom of the inner container, and the periphery of the heating plate can abut against the side wall of the coil rib;

[0010] The lower end of the heating plate is connected to a mounting bracket, and the lower end surface of the heating plate, the mounting bracket and the ring rib form a glue groove, and the glue groove is used to fill with glass glue, so that the heating plate and the inner tank are connected as a whole and cooperate to form a water holding cavity.

[0011] Preferably, the electrode includes a connecting portion and a column foot;

[0012] The mounting bracket is provided with an avoidance hole, and the connecting portion is screwed to the periphery of the avoidance hole so that the column foot can extend upwardly out of the avoidance hole;

[0013] When the mounting bracket is connected to the heating disk, the column foot can abut against the heating disk, so that current can flow through the heating disk and generate heat.

[0014] Preferably, the electrode is further formed with a bent portion, and the connecting portion and the column foot are connected via the bent portion;

[0015] When the column foot abuts against the heating plate, the heating plate pushes the electrode to bend, ensuring that the column foot can fit tightly against the lower end of the heating plate.

[0016] Preferably, a component cavity is formed between the mounting bracket and the heating plate, and a control component is arranged in the component cavity. The control component is used to adjust the current passing through the electrode to adjust the heating amount of the heating plate.

[0017] A thermos cup with a heating function, comprising the above-mentioned heating plate mounting structure for a thermos cup, wherein the lower end of the cup body is connected to a base;

[0018] The heating plate is provided with a mounting hole, and the mounting hole is used to pass the temperature measuring element through, so that the temperature measuring end of the temperature measuring element can pass through the water containing cavity;

[0019] A display screen assembly is provided in the base, and the display screen assembly is connected to the temperature measuring element so that the screen of the display screen assembly can directly display the temperature data in the water containing cavity, which is convenient for users to view;

[0020] The temperature measuring element can cooperate with the control component to better control the heat generation of the heating plate.

[0021] Preferably, an abutting ring portion is formed on the peripheral side of the temperature measuring element, and the abutting ring portion is used to abut against the upper end surface of the heating plate;

[0022] The outer side of the lower end of the temperature measuring element is formed with a thread, so that a fixing nut can be screwed onto the lower end of the temperature measuring element;

[0023] When the temperature measuring element is passed through the heating disk, the abutment ring abuts against the upper end surface of the heating disk, and the fixing nut is screwed close to the lower end surface of the heating disk. Through the cooperation of the fixing nut and the abutment ring, the temperature measuring element can be fixed on the heating disk.

[0024] Preferably, a support frame is further provided in the base, and a fixing seat is formed on the support frame, and the lower end of the temperature measuring element can be placed in the fixing seat;

[0025] A wire outlet slot is formed on the side wall of the fixing seat, and the wire outlet slot is used for allowing the wire of the temperature measuring element to extend out.

[0026] Preferably, the mounting portion is used to set the display screen assembly;

[0027] The display screen assembly further comprises a mounting plate, and the screen is arranged on the mounting plate;

[0028] A slide groove is formed in the mounting portion, and convex edges are formed at both ends of the mounting plate. The convex edges can slide into the slide groove, so that the mounting plate can be fixed in the mounting portion.

[0029] Preferably, a limiting portion is protruding from the upper end of the support frame, and the limiting portion is located at the upper end of the mounting portion. When the mounting plate slides into the mounting portion, the limiting portion is used to limit the position of the mounting plate.

[0030] Preferably, the base comprises a base shell and a bottom plate, the base shell is provided with a display fixing hole, and the display fixing hole is used to set the screen of the display assembly;

[0031] The support frame is formed with a first positioning protrusion and a second positioning protrusion; the base shell is also formed with a first positioning groove and a second positioning groove;

[0032] The contour of the first positioning protrusion matches the first positioning groove; the second positioning protrusion can be sleeved on the outside of the second positioning groove;

[0033] When the first positioning protrusion is aligned with the first positioning groove, and the second positioning protrusion is aligned with the second positioning groove, it is easy to determine the relative position between the display screen assembly and the display screen fixing hole, so as to facilitate accurate assembly.

[0034] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0035] 1. This technical solution provides a structure that can be used to install a heating plate for a glass thermos cup. The heating plate, the mounting bracket and the inner liner of the thermos cup can form a glue groove to facilitate fixing the heating plate to the bottom of the glass thermos cup.

[0036] 2. This technical solution can allow users to intuitively understand the status of the water temperature in the thermos cup through the temperature measuring element and display assembly.

[0037] 3. The display screen assembly is quick and easy to assemble onto the support frame inside the thermos cup base, and the accuracy of the assembly process can be effectively improved through the provided positioning components.

[0038] 4. A circuit board can be set on the mounting bracket. The user can set the water temperature in the thermos cup through the control component, and control the heat generated by the heating plate through the cooperation of the control component and the temperature measuring element, so that the water temperature in the thermos cup can be maintained at a temperature suitable for the user to drink. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural diagram of the utility model;

[0040] Figure 2 It is a cross-sectional view of the utility model;

[0041] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0042] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0043] Figure 5 It is a structural schematic diagram of the electrode of the utility model;

[0044] Figure 6 This is a schematic diagram of the assembly of the electrode and the mounting bracket of the utility model;

[0045] Figure 7 It is a structural diagram of the temperature measuring element of the utility model;

[0046] Figure 8 It is a structural diagram of the base of the utility model;

[0047] Figure 9 This is a schematic diagram of the assembly of the base shell, support frame and bottom plate of the utility model;

[0048] Figure 10 It is a schematic diagram of the assembly of the support frame and the display screen component of the utility model.

[0049] Reference numerals:

[0050] 1. Cup body; 11. Base shell; 12. Bottom plate; 13. Display fixing hole; 14. Power interface; 15. Positioning slot 1; 16. Positioning slot 2;

[0051] 2. Inner liner; 21. Ribs; 22. Water-holding cavity; 23. Raised portion;

[0052] 3. Heating plate; 31. Glue slot; 32. Mounting hole;

[0053] 4. Electrode; 41. Connecting portion; 42. Bending portion; 43. Column foot;

[0054] 5. Mounting bracket; 51. Avoidance hole; 52. Component cavity; 53. Wire hole;

[0055] 6. Temperature measuring element; 61. Temperature measuring end; 62. Abutment ring; 63. Fixing nut;

[0056] 7. Display screen assembly; 71. Screen; 72. Mounting plate; 73. Raised edge; 74. Button reserved hole; 75. Operation button;

[0057] 8. Support frame; 81. Fixed seat; 82. Wire outlet groove; 83. Mounting part; 84. Slide groove; 85. Positioning protrusion part 1; 86. Positioning protrusion part 2; 87. Limiting part; 88. Supporting protrusion part. DETAILED DESCRIPTION

[0058] The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0059] like Figures 1-4 The heating plate mounting structure of a thermos cup shown includes a cup body 1, in which a heating component and an inner liner 2 are arranged. The bottom end of the inner liner 2 is bent downward to form an annular ring rib 21.

[0060] The heating assembly includes a heating plate 3 and an electrode 4 for supplying power to the heating plate 3 . The heating plate 3 is connected to the bottom of the inner tank 2 , and the periphery of the heating plate 3 can rest against the side wall of the coil rib 21 .

[0061] The lower end of the heating plate 3 is connected to the mounting bracket 5. The lower end surface of the heating plate 3, the mounting bracket 5 and the ring rib 21 form a glue groove 31. The glue groove 31 is used to fill with glass glue, so that the heating plate and the inner tank 2 are connected as one, and cooperate to form a water cavity 22, which is used to hold liquid.

[0062] For ease of assembly, commercially available thermos bottles with heating functions typically weld the heating plate 3 to the bottom of the inner liner 2, requiring the inner liner 2 to be made of metal. However, in real life, many users prefer glass thermos bottles. Transparent glass allows users to more intuitively observe the state of the water chamber 22, while also not affecting the taste of the liquid inside.

[0063] By adopting this technical solution, a heating component can be set in a glass thermos cup to meet the needs of different users.

[0064] As a preferred embodiment, the connection between the bottom of the inner tank 2 and the ring rib 21 is formed as a raised portion 23. When the heating plate 3 abuts against the bottom of the inner tank 2, the peripheral side of the heating plate 3 can abut against the ring rib 21, and the peripheral edge of the upper end surface of the heating plate 3 fits on the raised portion 23, thereby further fixing the position of the heating plate 3.

[0065] like Figure 2-Figure 6 As shown, the electrode 4 includes a connecting portion 41 and a column foot 43 .

[0066] The mounting bracket 5 is provided with an escape hole 51 , and the connecting portion 41 is screwed to the periphery of the escape hole 51 so that the column foot 43 can extend upward out of the escape hole 51 .

[0067] When the mounting bracket 5 is connected to the heating plate 3 , the column foot 43 can pass through the avoidance hole 51 and rest against the heating plate 3 .

[0068] A power interface 14 is provided on the cup body 1, and the connecting part 41 is connected to the power interface 14. When the column foot 43 abuts against the lower end of the heating disk 3, current can flow through the heating disk 3 through the electrode 4, and the heating disk 3 generates heat to heat the liquid in the water chamber 22.

[0069] Furthermore, the electrode 4 is further formed with a bent portion 42 , and the connecting portion 41 and the column foot 43 are connected via the bent portion 42 .

[0070] When the column foot 43 rests against the heating plate 3, the heating plate 3 pushes the electrode 4 to bend. The elastic force generated by the deformation of the bending portion 42 can ensure that the column foot 43 can fit tightly against the lower end of the heating plate 3, so that the current can flow stably through the heating plate 3.

[0071] Specific as Figure 2 and Figure 3 As shown, a component cavity 52 is formed between the mounting bracket 5 and the heating plate 3. The component cavity 52 is used to set a control component. The control component can adjust the current passing through the electrode 4 to adjust the heating amount of the heating plate 3, thereby realizing intelligent and refined control of the water temperature to meet the preferences of different users.

[0072] like Figure 1-Figure 7 The thermos cup with heating function shown includes the heating plate mounting structure of the thermos cup described above.

[0073] The lower end of the cup body 1 is connected to a base.

[0074] The heating plate 3 is provided with a mounting hole 32 , which is used for passing the temperature measuring element 6 , so that the temperature measuring end 61 of the temperature measuring element 6 can pass through the water containing cavity 22 .

[0075] The temperature measuring element 6 is used to monitor the water temperature in the water holding chamber 22 in real time, and cooperates with the control component to better control the heat generation of the heating plate 3 to adjust the water temperature.

[0076] A display screen assembly 7 is also provided in the base, and the display screen assembly 7 is connected to the temperature measuring element 6 so that the screen 71 of the display screen assembly 7 can directly display the temperature data in the water containing cavity 22 for user viewing.

[0077] like Figure 4 and Figure 7 As shown, an abutting ring portion 62 is formed on the circumference of the temperature measuring element 6 , and the abutting ring portion 62 is used to abut against the upper end surface of the heating plate 3 .

[0078] The outer side of the lower end of the temperature measuring element 6 is formed with a thread, so that the lower end of the temperature measuring element 6 can be screwed with a fixing nut 63.

[0079] When the temperature measuring element 6 is passed through the heating disk 3, the abutment ring 62 abuts against the upper end surface of the heating disk 3, and the fixing nut 63 is tightened and close to the lower end surface of the heating disk 3. Through the cooperation of the fixing nut 63 and the abutment ring 62, the temperature measuring element 6 can be fixed on the heating disk 3.

[0080] A wire hole 53 is formed at the bottom of the mounting bracket 5 , and the wire hole 53 is used for allowing a line connected to the temperature measuring element 6 to pass through.

[0081] Furthermore, a sealing gasket may be provided between the abutting ring portion 62 and the upper end surface of the heating plate 3 to prevent water from flowing out of the water containing cavity 22 through the mounting hole 32 .

[0082] As another preferred embodiment, an additional sealing gasket may be provided between the fixing nut 63 and the lower end surface of the heating plate 3 to further improve the sealing performance.

[0083] like Figures 1-9 As shown, a support frame 8 is also provided in the base, and a fixing seat 81 is formed on the support frame 8. The base includes a base shell 11 and a bottom plate 12. The bottom end of the support frame 8 is plugged into the bottom plate 12, and the base shell 11 is sleeved on the upper end of the support frame 8.

[0084] The size of the fixing seat 81 matches the lower end of the temperature measuring element 6 , so that the lower end of the temperature measuring element 6 can be placed in the fixing seat 81 , and the temperature measuring element 6 can be firmly set in the fixing seat 81 .

[0085] A wire outlet slot 82 is formed on the side wall of the fixing seat 81 , and the wire outlet slot 82 is used for the wire of the temperature measuring element 6 to extend out.

[0086] Furthermore, a supporting protrusion 88 is protruding from the support frame 8 , and the supporting protrusion 88 can abut against the lower end of the mounting bracket 5 to further prevent the mounting bracket 5 from moving away from the heating plate 3 .

[0087] like Figures 1-10 As shown, a mounting portion 83 is formed on the side wall of the support frame 8 , and the mounting portion 83 is used to set the display screen assembly 7 .

[0088] The display screen assembly 7 further includes a mounting plate 72 , and the screen 71 is disposed on the mounting plate 72 .

[0089] The mounting plate 72 is also provided with a button reserved hole 74 for setting an operation button 75. The user can intuitively understand the water temperature of the liquid in the water chamber 22 through the screen 71, and can send a command signal to the control component through the operation button 75, so that the user can freely control the temperature of the liquid in the water chamber 22.

[0090] A slide groove 84 is formed in the mounting portion 83 , and convex edges 73 are formed at both ends of the mounting plate 72 . The convex edges 73 can slide into the slide groove 84 , thereby fixing the mounting plate 72 in the mounting portion 83 .

[0091] like Figures 1-10 As shown, a limiting portion 87 is protruded from the upper end of the support frame 8 , and the limiting portion 87 is located at the upper end of the mounting portion 83 .

[0092] When the mounting plate 72 slides into the mounting portion 83 , the limiting portion 87 can block the upper end of the mounting plate 72 , thereby facilitating limiting the position of the mounting plate 72 .

[0093] Furthermore, a display screen fixing hole 13 is opened on the base shell 11 , and the display screen fixing hole 13 is used to set the screen 71 of the display screen assembly 7 .

[0094] The support frame 8 is formed with a first positioning protrusion 85 and a second positioning protrusion 86 ; the base shell 11 is also formed with a first positioning groove 15 and a second positioning groove 16 .

[0095] The contour of the first positioning protrusion 85 matches the first positioning groove 15 ; the second positioning protrusion 86 can be sleeved on the outside of the second positioning groove 16 .

[0096] When the positioning protrusion 85 and the positioning groove 15 are aligned, and the positioning protrusion 86 and the positioning groove 16 are aligned, it is easy to determine the relative position between the display screen assembly 7 and the display screen fixing hole 13, and the support frame 8 and the base shell 11 can be positioned more intuitively and accurately, which facilitates accurate assembly and improves assembly efficiency.

[0097] It should be noted that the structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification for the understanding and reading of those familiar with this technology, and are not used to limit the conditions for the implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose of the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be considered as the scope of the implementation of the present invention without substantially changing the technical content.

[0098] It should also be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element through an intervening element.

[0099] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

Claims

1. A heating plate mounting structure for a thermos cup, characterized by: A heating component and an inner liner (2) are provided in the cup body (1) of the thermos cup, and the bottom end of the inner liner (2) is bent downward to form an annular ring rib (21); The heating assembly comprises a heating plate (3) and an electrode (4) for supplying power to the heating plate (3); the heating plate (3) is connected below the inner container (2); and the periphery of the heating plate (3) can abut against the side wall of the coil rib (21); The lower end of the heating plate (3) is connected to a mounting bracket (5), and the lower end surface of the heating plate (3), the mounting bracket (5) and the ring rib (21) form a glue groove (31). The glue groove (31) is used to fill glass glue, so that the heating plate and the inner tank (2) are connected as a whole and cooperate to form a water-containing cavity (22).

2. The heating plate mounting structure of a thermos cup according to claim 1, characterized in that: The electrode (4) includes a connecting portion (41) and a column foot (43); The mounting bracket (5) is provided with an escape hole (51), and the connecting portion (41) is screwed to the peripheral side of the escape hole (51), so that the column foot (43) can extend upward from the escape hole (51); When the mounting bracket (5) is connected to the heating disk (3), the column foot (43) can abut against the heating disk (3), thereby enabling current to flow through the heating disk (3) and generate heat.

3. The heating plate mounting structure of a thermos cup according to claim 2, characterized in that: The electrode (4) is further formed with a bent portion (42), and the connecting portion (41) and the column foot (43) are connected via the bent portion (42); When the column foot (43) abuts against the heating plate (3), the heating plate (3) pushes the electrode (4) to bend, ensuring that the column foot (43) can fit tightly against the lower end of the heating plate (3).

4. The heating plate mounting structure of a thermos cup according to claim 1, characterized in that: A component cavity (52) is formed between the mounting bracket (5) and the heating disk (3), and a control component is arranged in the component cavity (52). The control component is used to adjust the current passing through the electrode (4) to adjust the heating amount of the heating disk (3).

5. A thermos cup with heating function, comprising a heating plate mounting structure for a thermos cup according to any one of claims 1 to 4, characterized in that: The lower end of the cup body (1) is connected to a base; The heating plate (3) is provided with a mounting hole (32), and the mounting hole (32) is used to pass a temperature measuring element (6) through the mounting hole, so that the temperature measuring end (61) of the temperature measuring element (6) can pass through the water containing cavity (22); A display screen assembly (7) is further provided in the base, and the display screen assembly (7) is connected to the temperature measuring element (6), so that the screen (71) of the display screen assembly (7) can directly display the temperature data in the water containing cavity (22), which is convenient for the user to view; The temperature measuring element (6) can cooperate with the control component to better control the heat generation of the heating plate (3).

6. The thermos cup with heating function according to claim 5, characterized in that: An abutting ring portion (62) is formed on the peripheral side of the temperature measuring element (6), and the abutting ring portion (62) is used to abut against the upper end surface of the heating plate (3); The outer side of the lower end of the temperature measuring element (6) is formed with a thread, so that a fixing nut (63) can be screwed onto the lower end of the temperature measuring element (6); When the temperature measuring element (6) is inserted into the heating disk (3), the abutting ring portion (62) abuts against the upper end surface of the heating disk (3), and the fixing nut (63) is screwed close to the lower end surface of the heating disk (3). Through the cooperation between the fixing nut (63) and the abutting ring portion (62), the temperature measuring element (6) can be fixed on the heating disk (3).

7. The thermos cup with heating function according to claim 5, characterized in that: A support frame (8) is further provided in the base, and a fixing seat (81) is formed on the support frame (8), and the lower end of the temperature measuring element (6) can be placed in the fixing seat (81); A wire outlet groove (82) is formed on the side wall of the fixing seat (81), and the wire outlet groove (82) is used for allowing the wire of the temperature measuring element (6) to extend out.

8. The thermos cup with heating function according to claim 7, characterized in that: A mounting portion (83) is formed on the side wall of the support frame (8), and the mounting portion (83) is used to set the display screen assembly (7); The display screen assembly (7) further includes a mounting plate (72), and the screen (71) is arranged on the mounting plate (72); A slide groove (84) is formed in the mounting portion (83), and convex edges (73) are formed at both ends of the mounting plate (72). The convex edges (73) can slide into the slide groove (84), so that the mounting plate (72) can be fixed in the mounting portion (83).

9. The thermos cup with heating function according to claim 8, characterized in that: The upper end of the support frame (8) is also protruded with a limiting portion (87), and the limiting portion (87) is located at the upper end of the mounting portion (83). When the mounting plate (72) slides into the mounting portion (83), the limiting portion (87) is used to limit the position of the mounting plate (72).

10. The thermos cup with heating function according to claim 8 or 9, characterized in that: The base comprises a base shell (11) and a bottom plate (12); a display screen fixing hole (13) is provided on the base shell (11); the display screen fixing hole (13) is used to set the screen (71) of the display screen assembly (7); The support frame (8) is formed with a first positioning protrusion (85) and a second positioning protrusion (86); the base shell (11) is also formed with a first positioning groove (15) and a second positioning groove (16); The contour of the first positioning protrusion (85) matches the first positioning groove (15); the second positioning protrusion (86) can be sleeved on the outside of the second positioning groove (16); When the first positioning protrusion (85) and the first positioning groove (15) are aligned, and the second positioning protrusion (86) and the second positioning groove (16) are aligned, it is easy to determine the relative position between the display screen assembly (7) and the display screen fixing hole (13), so as to facilitate accurate assembly.

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