Mounting structure of water heater end cover

Abstract

The utility model discloses a mounting structure of a water heater end cover, which is applied to an end cover and a cylindrical shell, the end cover is mounted at a port of the shell, at least two first clamping blocks are arranged on the inner side wall of the shell, and cover edges abutted against the outer side surfaces of the first clamping blocks are arranged on the outer side wall of the end cover. A second clamping block corresponding to the first clamping block is further arranged on the outer side wall of the end cover, a clamping structure capable of limiting the end cover to rotate relative to the shell is arranged between the first clamping block and the second clamping block, and a manual cover rotating structure is arranged on the end cover. When the manual rotating cover structure is subjected to external force, the end cover can be driven to rotate relative to the shell so that the second clamping block can rotate to the inner side of the first clamping block or rotate to the position staggered with the first clamping block. By applying certain acting force to the manual rotating cover structure, the clamping force of the clamping structure can be overcome to rotate the end cover, so that the second clamping block is separated from the first clamping block, and at the moment, the end cover can be axially taken out to be overhauled, which is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of electric water heaters, in particular to a mounting structure of an end cover of a water heater. Background Art

[0002] Water heaters are a common household appliance in daily life. Depending on the heating source, they are categorized as electric or gas-fired. Electric water heaters are widely used due to their ease of installation and relatively consistent water temperature. They typically consist of an outer shell, an inner tank, and an electric heater. The inner tank is housed within the outer shell, and the electric heater heats the water within. Typically, end caps are provided at each end of the outer shell. Existing electric water heaters typically secure these caps with screws or clips, making them difficult to remove for maintenance. Utility Model Content

[0003] In view of this, an object of the present invention is to provide a mounting structure for an end cover of a water heater that is convenient for disassembling and assembling the end cover.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A mounting structure for an end cover of a water heater is applied to the end cover and a cylindrical shell, the end cover being mounted at the port of the shell, at least two first clamping blocks being provided on the inner side wall of the shell, a cover edge being provided on the outer side wall of the end cover and abutting against the outer side surface of the first clamping block being provided, a second clamping block corresponding to the first clamping block being further provided on the outer side wall of the end cover, a locking structure being provided between the first clamping block and the second clamping block and being capable of limiting the rotation of the end cover relative to the shell, a manually rotatable cover structure being provided on the end cover, and the manually rotatable cover structure being capable of driving the end cover to rotate relative to the shell when subjected to external force so that the second clamping block is rotated to the inner side of the first clamping block or to a position staggered with the first clamping block.

[0006] In a preferred solution of the present invention, the engaging structure includes a slot provided on the inner side of the first engaging block, and a protrusion provided on the second engaging block and capable of being inserted into the slot.

[0007] In a preferred embodiment of the present invention, the port of the housing is a circular port, the end cover is circular, the slot is a linear slot, and the length direction of the slot is inclined relative to the tangent direction of the end cover's rotating circumference.

[0008] In a preferred embodiment of the present invention, the protrusion is in the shape of a straight bar, and is parallel to the slot when the protrusion is inserted into the slot.

[0009] In a preferred embodiment of the present invention, the side of the second card block facing the first card block is the fitting side, the protrusion is located in the middle of the fitting side of the second card block, and the fitting side of the second card block is also provided with transition surfaces located on the left and right sides of the protrusion, and the transition surface gradually decreases from one end close to the protrusion to the other end.

[0010] In a preferred embodiment of the present invention, the manual rotating cover structure includes anti-slip grooves provided on the outer surface of the end cover.

[0011] In a preferred embodiment of the present invention, the anti-slip grooves are provided in two groups, which are symmetrically arranged on the left and right sides of the end cover, and each group of anti-slip grooves includes at least two parallel linear convex grooves.

[0012] The beneficial effect of the utility model is that by applying a certain force to the manual cover rotating structure, the clamping force of the above-mentioned clamping structure can be overcome and the end cover can be rotated, so that the second clamping block is disengaged from the first clamping block, and the two are switched to mutually staggered positions. At this time, the end cover can be axially taken out for maintenance, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of an electric water heater;

[0014] Figure 2 This is an exploded view of the end cap and housing;

[0015] Figure 3 yes Figure 2 Enlarged view of part A;

[0016] Figure 4 is a cross-sectional view of the housing;

[0017] Figure 5 yes Figure 4 Magnified view of part B. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be described clearly and completely below with reference to the accompanying drawings.

[0019] It should be noted that all directional indications in the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the descriptions of "preferred", "sub-preferred", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "preferred" or "sub-preferred" may explicitly or implicitly include at least one such feature.

[0020] Reference Figures 1 to 5 The present invention provides a mounting structure for a water heater end cover, which is applied to an end cover 1 and a cylindrical housing 2. The end cover 1 is mounted at the port of the housing 2. At least two first clamping blocks 3 are provided on the inner sidewall of the housing 2. A cover edge 11 is provided on the outer sidewall of the end cover 1, which abuts against the outer side surfaces of the first clamping blocks 3. A second clamping block 12 corresponding to the first clamping block 3 is also provided on the outer sidewall of the end cover 1. A locking structure is provided between the first clamping block 3 and the second clamping block 12 to limit the rotation of the end cover 1 relative to the housing 2. The end cover 1 is provided with a manual cover rotation structure. When subjected to an external force, the manual cover rotation structure can drive the end cover 1 to rotate relative to the housing 2 so that the second clamping block 12 rotates to the inside of the first clamping block 3 or rotates to a position offset from the first clamping block 3. Preferably, the number of each of the first clamping blocks 3 and the second clamping blocks 12 is four. The four first clamping blocks 3 are evenly arranged on the inner sidewall of the housing 2, and the four second clamping blocks 12 are evenly arranged on the outer sidewall of the end cover 1.

[0021] The method for installing the end cover 1 is to install the end cover 1 at the port of the housing 2 so that the cover edge 11 of the end cover 1 abuts against the outer side of the first clamping block 3, then rotate the end cover 1 and rotate the second clamping block 12 to the inner side of the first clamping block 3 so that the two are engaged through the clamping structure. After that, the state of the end cover 1 can be kept stable, and the installation of the end cover 1 is completed. The method for removing the end cover 1 is to rotate the end cover 1 to overcome the clamping force of the above-mentioned clamping structure, so that the second clamping block 12 can be disengaged from the first clamping block 3, and the two can be switched to mutually staggered positions. Then, the end cover 1 can be removed axially, which is convenient and quick.

[0022] In a preferred embodiment of the present invention, the engaging structure includes a slot 31 provided on the inner side of the first engaging block 3 , and a protrusion 121 provided on the second engaging block 12 and capable of being inserted into the slot 31 .

[0023] Furthermore, the port of the housing 2 is circular, the end cap 1 is circular, and the slot 31 is a linear slot. The length direction of the slot 31 is inclined relative to the tangent direction of the rotational circumference of the end cap 1. In other words, the angle h between the slot 31 and the radius of the location where the slot 31 is located is an acute angle, and the value of the angle h can be 10°, 30°, 45°, etc. The protrusion 121 is a straight bar, and when the protrusion 121 is inserted into the slot 31, it is parallel to the slot 31. This design can increase the contact area between the block and the slot 31 and reduce stress concentration.

[0024] Reference Figure 3The side of the second card block 12 facing the first card block 3 is the fitting side, and the protrusion 121 is located in the middle of the fitting side of the second card block 12. The fitting side of the second card block 12 is also provided with transition surfaces 122 located on the left and right sides of the protrusion 121. The transition surfaces 122 gradually decrease from one end close to the protrusion 121 to the other end. With this design, when the second card block 12 is rotated to the inner side of the first card block 3, the design of the transition surface 122 can reduce the rotation resistance to a certain extent, so that the second card block 12 and the first card block 3 can be smoothly engaged together.

[0025] Reference Figure 1 and Figure 2 In a preferred embodiment of the present invention, the manual cover-turning structure includes anti-slip grooves 4 disposed on the outer surface of the end cap 1. Specifically, the anti-slip grooves 4 are provided in two groups, symmetrically disposed on the left and right sides of the end cap 1. Each group of anti-slip grooves 4 includes at least two parallel linear ridges. In this embodiment, the user rotates the end cap 1 by placing one hand on the first group of anti-slip grooves 4 and the other hand on the second group of anti-slip grooves 4. Then, by simultaneously applying a clockwise or counterclockwise friction force with both hands, the end cap 1 is driven to rotate, thereby allowing the end cap 1 to be removed.

[0026] In some preferred embodiments of the present invention, the above-mentioned manual rotating cover structure may also adopt other structural forms, such as including two hand buckle holes, which are respectively arranged on the left edge and the right edge of the end cover 1. After the user's two index fingers are respectively inserted into the hand buckle holes, both hands simultaneously apply a clockwise or counterclockwise thrust to drive the end cover 1 to rotate, and then the end cover 1 can be removed.

[0027] In some solutions of the present invention, the above-mentioned engaging structure may also adopt other structural forms, such as providing the above-mentioned slot 31 on the second card block 12 and correspondingly providing the above-mentioned protrusion 121 on the first card block 3 .

[0028] The above are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A water heater end cover installation structure, characterized in that: The invention is applied to an end cover (1) and a cylindrical shell (2), wherein the end cover (1) is installed at a port of the shell (2), at least two first clamping blocks (3) are provided on the inner side wall of the shell (2), a cover edge (11) abutting against the outer side surface of the first clamping block (3) is provided on the outer side wall of the end cover (1), and a second clamping block (12) corresponding to the first clamping block (3) is also provided on the outer side wall of the end cover (1), a clamping structure capable of limiting the rotation of the end cover (1) relative to the shell (2) is provided between the first clamping block (3) and the second clamping block (12), and a manual cover rotating structure is provided on the end cover (1), and when the manual cover rotating structure is subjected to an external force, the end cover (1) can be driven to rotate relative to the shell (2) so that the second clamping block (12) rotates to the inner side of the first clamping block (3) or rotates to a position staggered with the first clamping block (3).

2. The installation structure of the water heater end cover according to claim 1, characterized in that: The engaging structure comprises a card slot (31) provided on the inner side of the first card block (3), and a protrusion (121) provided on the second card block (12) and capable of being inserted into the card slot (31).

3. The installation structure of the water heater end cover according to claim 2, characterized in that: The port of the housing (2) is a circular port, the end cover (1) is circular, the slot (31) is a linear slot, and the length direction of the slot (31) is inclined relative to the tangent direction of the rotation circle of the end cover (1).

4. The installation structure of the water heater end cover according to claim 3, characterized in that: The protrusion (121) is in the shape of a straight bar, and when the protrusion (121) is inserted into the card slot (31), it is parallel to the card slot (31).

5. The installation structure of the water heater end cover according to claim 2, characterized in that: The side of the second card block (12) facing the first card block (3) is a fitting side, the protrusion (121) is located in the middle of the fitting side of the second card block (12), and the fitting side of the second card block (12) is further provided with transition surfaces (122) located on the left and right sides of the protrusion (121), and the transition surface (122) gradually decreases from one end close to the protrusion (121) to the other end.

6. The installation structure of the water heater end cover according to claim 1, characterized in that: The manual rotating cover structure comprises anti-slip grooves (4) arranged on the outer surface of the end cover (1).

7. The installation structure of the water heater end cover according to claim 6, characterized in that: The number of the anti-slip grooves (4) is two groups, and the two groups of anti-slip grooves (4) are symmetrically arranged on the left and right sides of the end cover (1), and each group of anti-slip grooves (4) includes at least two mutually parallel linear convex grooves.

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