Waterproof kick type temperature controller

Abstract

The utility model relates to the technical field of temperature controllers, in particular to a waterproof kick type temperature controller, which comprises a shell, a mounting piece arranged on the shell, a shell inner cavity arranged in the shell, a bearing ring arranged in the shell inner cavity, a mounting seat arranged on the bearing ring, a spiral groove arranged on the mounting seat, an inner side sealing groove and an outer side sealing groove arranged on the bearing ring, a bakelite body is arranged above the shell, a caulking groove is formed in the bakelite body, positive and negative electrode connecting pieces and a bolt column are arranged in the caulking groove, a waterproof cover is arranged on the bakelite body, an inner side sealing block and an outer side sealing block are arranged in the bakelite body, a bolt cap is arranged on the bolt column, and a waterproof ring is arranged on the bolt column. The overall sealing waterproof performance between the bakelite body and the inner cavity of the shell is improved, the waterproof ring can be effectively extruded and sealed by the bolt cap of the bolt column, and the sealing waterproof performance of the connecting and installing part of the bolt column and the positive and negative electrode connecting pieces is further improved.

Description

Technical Field

[0001] This utility model relates to the field of thermostat technology, and in particular to a waterproof snap-action thermostat. Background Technology

[0002] A snap-action thermostat is a type of bimetallic strip thermostat mainly used for the protection of various electric heating products. Among them, the bakelite snap-action thermostat is a commonly used type. The bakelite body is made of phenolic plastic. Due to the high heat resistance of bakelite, the bakelite snap-action thermostat is widely used.

[0003] The basic working principle of a bakelite snap-action thermostat is as follows: when the temperature of the main component of the product rises or falls, heat is transferred to the bimetallic disc. Then, when the set temperature is reached, the bimetallic disc quickly snaps. The snap action is then transmitted to the moving contact support through the ceramic actuating rod. After the moving contact support is pushed, the moving contact and the fixed contact separate, breaking the circuit. Later, when the temperature drops to the recovery temperature, the bimetallic disc returns to its original state. Finally, the pressure applied to the actuating rod is released, and the moving and fixed contacts are reconnected.

[0004] The specific installation process involves pre-setting mounting grooves on the bakelite body, with pre-set perforations in the mounting grooves, and pre-setting threaded grooves and an inner cavity on the housing. During installation, the bakelite body is inserted into the inner cavity of the housing, and then the bolt is taken out, passed through the perforations on the bakelite body, and threaded into the threaded grooves on the housing to secure it.

[0005] Currently, in existing bakelite snap-action thermostats, there is a gap at the insertion point after the bakelite is inserted into the inner cavity of the housing. The sealing and waterproofing of the insertion point is weak. With long-term use, moisture can easily flow in from the gap between the bakelite and the inner cavity of the housing, which can cause water damage and short circuits in the relevant electronic components in the housing, greatly reducing the overall sealing and waterproofing between the bakelite and the inner cavity of the housing. Utility Model Content

[0006] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a waterproof snap-action thermostat.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] Design a waterproof snap-action thermostat, including a housing, a mounting plate on the housing with mounting holes, an inner cavity inside the housing, a support ring in the inner cavity, a mounting seat on the support ring with a screw groove, an inner sealing groove and an outer sealing groove on the support ring, and a bakelite body on the top of the housing with a recessed groove containing positive and negative terminals and a bolt post.

[0009] A waterproof cover is provided on the bakelite body, and an inner sealing block and an outer sealing block are provided inside the bakelite body;

[0010] The bolt post is equipped with a bolt cap and a waterproof ring.

[0011] Furthermore, the supporting ring is a circular structure and is evenly laid along the inner wall of the shell cavity, and the upper end of the supporting ring is not higher than the shell cavity.

[0012] Furthermore, the inner sealing groove and the outer sealing groove are generally ring-shaped inner grooves and are opened on the upper end surface of the supporting ring, and the inner sealing block and the outer sealing block are generally ring-shaped protrusions and are set on the lower end surface of the bakelite body.

[0013] Furthermore, the waterproof cover is a cover-shaped structure and is disposed on the outer wall surface of the bakelite body, and the lower end of the waterproof cover is open.

[0014] Furthermore, the mounting base is disposed on the inner wall surface of the support ring, and the threaded groove does not penetrate the mounting base.

[0015] Furthermore, the bolt post and the mounting base are a set, consisting of two sets symmetrically arranged on the left and right. The bolt post passes through the positive and negative electrode contacts and the bakelite body and is threadedly connected to the bolt groove.

[0016] Furthermore, the top of the bolt cap is not higher than the groove, the waterproof ring is sleeved on the bolt post, and the upper and lower ends of the waterproof ring are in contact with the bolt cap and the positive and negative electrode contacts respectively.

[0017] The waterproof snap-action thermostat proposed in this utility model has the following advantages:

[0018] 1. This utility model utilizes a support ring structure with inner and outer sealing grooves, and inner and outer sealing blocks on the bakelite body, along with a waterproof cover. When the bakelite body is inserted into the inner cavity of the shell and installed, the inner and outer sealing blocks are respectively squeezed and sealed into their corresponding inner and outer sealing grooves. Simultaneously, the waterproof cover completely seals and waterproofs the connection between the bakelite body and the inner cavity of the shell. This achieves not only a double compression sealing and waterproofing effect on the connection between the bakelite body and the inner cavity of the shell, but also a compression sealing and waterproofing effect on the outside, thus improving the overall sealing and waterproofing performance between the bakelite body and the inner cavity of the shell.

[0019] 2. This utility model provides a waterproof ring at the insertion point of the bolt post and the positive and negative electrode contacts. When the bolt post passes vertically through the pre-set through hole on the positive and negative electrode contacts and is locked with the thread of the bolt groove, the bolt cap of the bolt post will effectively squeeze and seal the waterproof ring, further improving the sealing and waterproof performance of the connection and installation part between the bolt post and the positive and negative electrode contacts. Attached Figure Description

[0020] Figure 1 This is a first-view perspective three-dimensional schematic diagram of the shell and bakelite body of this utility model in their uninstalled state.

[0021] Figure 2 This is a second-view perspective three-dimensional schematic diagram of the shell and bakelite body of this utility model in their uninstalled state.

[0022] Figure 3 This is a three-dimensional schematic diagram of the shell and bakelite body of this utility model in the installed state;

[0023] Figure 4 For the present utility model Figure 1 A three-dimensional schematic diagram of a bakelite body structure with a waterproof cover;

[0024] Figure 5 For the present utility model Figure 1 A three-dimensional schematic diagram of a shell structure with a supporting ring.

[0025] In the diagram: 1. Housing; 10. Housing cavity; 11. Mounting piece; 12. Mounting hole; 2. Support ring; 21. Inner sealing groove; 22. Outer sealing groove; 3. Mounting base; 31. Thread groove; 4. Bakelite body; 41. Insert groove; 42. Positive and negative terminals; 5. Bolt post; 50. Bolt cap; 51. Waterproof ring; 6. Waterproof cover; 7. Inner sealing block; 8. Outer sealing block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Reference Figure 1-5 A waterproof snap-action thermostat includes a housing 1, a mounting plate 11 on the housing 1, a mounting hole 12 on the mounting plate 11, an inner cavity 10 inside the housing 1, a support ring 2 in the inner cavity 10, a mounting seat 3 on the support ring 2, a screw groove 31 on the mounting seat 3, an inner sealing groove 21 and an outer sealing groove 22 on the support ring 2, a bakelite body 4 on the top of the housing 1, a groove 41 on the bakelite body 4, and positive and negative terminals 42 and bolt posts 5 inside the groove 41.

[0028] A waterproof cover 6 is provided on the bakelite body 4, and an inner sealing block 7 and an outer sealing block 8 are provided inside the bakelite body 4;

[0029] Bolt post 5 is provided with bolt cap 50 and waterproof ring 51. Some of the structures described in this patent are common structures of bakelite snap-action thermostats. The related structures and working principles are existing technologies. Some existing structures are not drawn or marked and need not be described in detail. Among them, bakelite body 4 is a cylindrical structure made of phenolic plastic material.

[0030] The support ring 2 is a circular structure and is evenly laid along the inner wall of the shell cavity 10. The upper end of the support ring 2 is not higher than the shell cavity 10. When the bakelite body 4 is inserted into the shell cavity 10 and installed by the thread of the bolt post 5, the lower end of the bakelite body 4 will just contact the upper end of the support ring 2, so as to achieve a stable support effect for the installed bakelite body 4.

[0031] The inner sealing groove 21 and the outer sealing groove 22 are ring-shaped inner grooves and are opened on the upper end surface of the supporting ring 2. The inner sealing block 7 and the outer sealing block 8 are ring-shaped protrusions and are set on the lower end surface of the bakelite body 4. Both the inner sealing block 7 and the outer sealing block 8 are made of silicone rubber, which has excellent high elasticity, sealing and waterproof properties, strong elasticity and durability.

[0032] The waterproof cover 6 is a cover-shaped structure and is set on the outer wall of the bakelite body 4. The lower end of the waterproof cover 6 is open. The waterproof cover 6 is made of vulcanized rubber, which has high elasticity, sealing and waterproof properties, and is wear-resistant, corrosion-resistant and durable.

[0033] Mounting seat 3 is set on the inner wall of support ring 2. Thread groove 31 does not penetrate mounting seat 3. When bolt cap 50 and positive and negative terminals 42 are in a state of compression on waterproof ring 51, waterproof ring 51 will generate vertical rebound force. This vertical rebound force acts on bolt post 5, improving the anti-loosening effect between bolt post 5 and thread groove 31.

[0034] Bolt post 5 and mounting base 3 are a set, and there are two sets in total, symmetrical from left to right. Bolt post 5 passes through positive and negative terminal piece 42 and bakelite body 4 and is threadedly connected to screw groove 31, realizing stable installation between housing 1 and bakelite body 4.

[0035] The top of the bolt cap 50 should not be higher than the groove 41 to avoid the protruding bolt cap 50 colliding with foreign objects.

[0036] The waterproof ring 51 is fitted onto the bolt post 5. The upper and lower ends of the waterproof ring 51 are in contact with the bolt cap 50 and the positive and negative terminal plates 42 respectively. The waterproof ring 51 is made of NBR nitrile rubber, which has excellent high elasticity, sealing and waterproof properties.

[0037] Working method: During installation, vertically insert the bakelite body 4 into the inner cavity 10 of the housing 1, then take the corresponding tool and rotate the bolt cap 50 clockwise, which will drive the bolt post 5 to rotate clockwise (this is the existing technology). After the bolt post 5 and the threaded groove 31 are locked together, the installation is completed.

[0038] At this time, the inner sealing block 7 and the outer sealing block 8 will be squeezed and sealed into the corresponding inner sealing groove 21 and outer sealing groove 22 respectively. At the same time, the waterproof cover 6 will seal the joint between the bakelite body 4 and the inner cavity 10 of the shell, thus achieving a double squeeze sealing waterproof effect on the joint between the bakelite body 4 and the inner cavity 10 of the shell, and also achieving a squeeze covering waterproof effect on the outside, thereby improving the overall sealing waterproof performance between the bakelite body 4 and the inner cavity 10 of the shell.

[0039] In addition, when the bolt post 5 passes vertically through the pre-set through hole on the positive and negative terminal plate 42 and is threaded and locked with the threaded groove 31, the bolt cap 50 of the bolt post 5 will effectively squeeze and seal the waterproof ring 51, further improving the sealing and waterproof performance of the connection and installation part between the bolt post 5 and the positive and negative terminal plate 42.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A waterproof snap-action thermostat, comprising a housing (1), characterized in that: The housing (1) is provided with a mounting plate (11), the mounting plate (11) is provided with a mounting hole (12), the housing (1) is provided with an inner cavity (10), the inner cavity (10) is provided with a support ring (2), the support ring (2) is provided with a mounting seat (3), the mounting seat (3) is provided with a screw groove (31), the support ring (2) is provided with an inner sealing groove (21) and an outer sealing groove (22), the top of the housing (1) is provided with a bakelite body (4), the bakelite body (4) is provided with a groove (41), the groove (41) is provided with a positive and negative terminal piece (42) and a bolt post (5); A waterproof cover (6) is provided on the bakelite body (4), and an inner sealing block (7) and an outer sealing block (8) are provided inside the bakelite body (4). The bolt post (5) is provided with a bolt cap (50) and a waterproof ring (51).

2. A waterproof snap-action thermostat according to claim 1, characterized in that: The support ring (2) is a circular structure and is evenly laid along the inner wall of the shell cavity (10). The upper end of the support ring (2) is not higher than the shell cavity (10).

3. A waterproof snap-action thermostat according to claim 1, characterized in that: The inner sealing groove (21) and the outer sealing groove (22) are generally ring-shaped inner grooves and are opened on the upper end surface of the supporting ring (2). The inner sealing block (7) and the outer sealing block (8) are generally ring-shaped protrusions and are set on the lower end surface of the bakelite body (4).

4. A waterproof snap-action thermostat according to claim 1, characterized in that: The waterproof cover (6) is a cover-shaped structure and is set on the outer wall of the bakelite body (4). The lower end of the waterproof cover (6) is open.

5. A waterproof snap-action thermostat according to claim 1, characterized in that: The mounting base (3) is disposed on the inner wall of the support ring (2), and the screw groove (31) does not penetrate the mounting base (3).

6. A waterproof snap-action thermostat according to claim 1, characterized in that: The bolt post (5) and the mounting base (3) are a set, and there are two sets in total, which are symmetrical from left to right. The bolt post (5) passes through the positive and negative electrode contacts (42) and the bakelite body (4) and is threadedly connected to the screw groove (31).

7. A waterproof snap-action thermostat according to claim 1, characterized in that: The top of the bolt cap (50) is not higher than the groove (41), the waterproof ring (51) is sleeved on the bolt post (5), and the upper and lower ends of the waterproof ring (51) are pressed into contact with the bolt cap (50) and the positive and negative electrode contacts (42) respectively.

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