Liquid expansion type temperature controller capable of improving assembly efficiency

Abstract

A liquid expansion type temperature controller capable of improving assembly efficiency relates to the technical field of liquid expansion type temperature controllers, and comprises a base and a housing installed on the base, the housing is provided with a liquid expansion type push rod mechanism, the base is provided with a contact piece frame and a static contact piece, and the static contact piece is provided with a liquid expansion type push rod mechanism. Each of the contact piece frame and the static contact piece comprises a mounting part which is mounted in the base and is fixedly connected with the base and a pin part which extends downwards from the bottom end of the base, a movable contact piece is mounted on the contact piece frame, and one end of the liquid expansion type push rod mechanism can push and abut against the movable contact piece, so that one end of the movable contact piece tilts and abuts against the static contact piece. Therefore, the contact piece frame and the static contact piece are connected in a conducting mode. According to the utility model, the assembly efficiency can be improved and the manufacturing cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid expansion type temperature controllers, in particular to a liquid expansion type temperature controller capable of improving assembly efficiency. Background Art

[0002] The liquid expansion thermostat is a type of thermostat that uses the physical properties of liquid expansion and contraction to make the switch produce on-off action. Specifically, when the temperature of the controlled object changes, the heat medium in the temperature sensing tube of the liquid expansion thermostat is heated or cooled to produce physical changes of thermal expansion and contraction, and the membrane box connected to the temperature sensing tube expands or contracts, and through mechanical mechanisms such as levers, the switch contacts are driven to open or close, thereby achieving the purpose of controlling the temperature.

[0003] The existing liquid expansion thermostat has the problem of inconvenient pin fixation. To this end, the applicant has proposed a related technical solution, namely, the multi-ceramic ring riveted liquid expansion thermostat disclosed in Chinese patent CN 217641122 U, which connects multiple ceramic rings in series, uses adjacent ceramic rings to compress the long moving contact piece, the static contact piece, and the diaphragm box support piece, and uses rivet columns to respectively connect with the upper fixed plate and the lower fixed plate by interference fit, so that the assembly between the components is very convenient and quick. However, this method always faces the problem of needing to connect each component in series in sequence and then tighten the connection, so this structure cannot fundamentally improve the assembly efficiency. In addition, the use of multiple ceramic ceramic ring structures to assist in assembly also increases the cost accordingly. Utility Model Content

[0004] The utility model aims to provide a liquid expansion type temperature controller which can improve assembly efficiency.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a liquid expansion temperature controller that can improve assembly efficiency, comprising a base and a cover shell installed on the base, the cover shell is equipped with a liquid expansion push rod mechanism, the base is equipped with a contact frame and a static contact, the contact frame and the static contact both include a mounting portion installed in the base and fixedly connected to the base, and a pin portion extending downward from the bottom end of the base, a moving contact is installed on the contact frame, one end of the liquid expansion push rod mechanism can push the moving contact so that one end of the moving contact is tilted and abuts against the static contact, thereby achieving conductive connection between the contact frame and the static contact.

[0006] Alternatively, a liquid expansion temperature controller that can improve assembly efficiency is also provided, comprising a base and a cover shell installed on the base, the cover shell being equipped with a liquid expansion push rod mechanism, the base being equipped with a contact piece frame, a static contact piece and a secondary static contact piece, the contact piece frame, the static contact piece and the secondary static contact piece all comprising a mounting portion installed in the base and fixedly connected to the base, and a pin portion extending downward from the bottom end of the base, the contact point of the static contact piece being located directly above the contact point of the secondary static contact piece, a moving contact piece being installed on the contact piece frame, one end of the moving contact piece being resting on the contact point of the secondary static contact piece so that a conductive connection is achieved between the contact piece frame and the secondary static contact piece, and one end of the liquid expansion push rod mechanism being able to push against the moving contact piece so that one end of the moving contact piece is tilted up and abuts against the contact point of the static contact piece, thereby achieving a conductive connection between the contact piece frame and the static contact piece.

[0007] For the above two types of liquid expansion thermostats, preferably, the inner bottom of the base is provided with a positioning step that matches with the corresponding mounting portion.

[0008] More preferably, each mounting portion is threadedly connected to the corresponding positioning step.

[0009] More preferably, each pin portion is further provided with a threaded hole.

[0010] More preferably, the base is made of plastic material, and the plastic material is BMC.

[0011] More preferably, the liquid expansion push rod mechanism includes an adjusting shaft fixedly penetrated through the cover shell, an adjusting screw arranged in the adjusting shaft and extending upward, a diaphragm box connected to the bottom end of the adjusting shaft, a push rod is connected to the bottom of the diaphragm box, an insulating plate is installed between the base and the cover shell, the bottom end of the push rod passes through the insulating plate and extends downward to above the contact piece frame, a flange is provided on the head of the push rod and a compression spring is provided between the flange and the insulating plate, and the diaphragm box is connected to a temperature sensing tube.

[0012] Compared with the prior art, the utility model provides a contact frame and a stationary contact piece in a conjoined structure including a mounting portion and a pin portion, and provides each mounting portion to be connected to the inside of the base, so that the contact frame and the stationary contact piece can be simultaneously loaded into the stamping die and pressed into the base together, thereby greatly improving the assembly efficiency. In addition, it is no longer necessary to use multiple ceramic ring structures to press each contact piece, thereby reducing the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of Example 1;

[0014] Figure 2 is a schematic cross-sectional structural diagram of Example 1;

[0015] Figure 3 It is a schematic diagram of the overall structure of Example 2;

[0016] Figure 4 Schematic diagram of the positional relationship between the base and the contact piece frame, the static contact piece, and the auxiliary static contact piece in Example 2.

[0017] In the figure:

[0018] 1——Base 2——Cover 3——Contact Sheet

[0019] 4 - static contact piece 5 - dynamic contact piece 6 - auxiliary static contact piece

[0020] 7——Threaded hole 8——Adjusting shaft 9——Adjusting screw

[0021] 10——diaphragm box 11——push rod 12——insulating plate

[0022] 13——Compression spring 14——Temperature sensing tube. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0024] It should be noted in advance that, in the present utility model, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. In addition, in the present utility model, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature can include the first and second features directly contacting, and can also include the first and second features not being in direct contact but contacting through another feature between them. Example 1

[0025] like Figure 1 to Figure 2 As shown, a liquid expansion type temperature controller capable of improving assembly efficiency comprises a base 1 and a cover shell 2 mounted on the base 1, the cover shell 2 is mounted with a liquid expansion type push rod mechanism, the base 1 is mounted with a contact piece frame 3 and a static contact piece 4, the contact piece frame 3 and the static contact piece 4 both comprise a mounting portion mounted in the base 1 and fixedly connected to the base 1 and a pin portion extending downward from the bottom end of the base 1, a moving contact piece 5 is mounted on the contact piece frame 3, one end of the liquid expansion type push rod mechanism can push against the moving contact piece 5, so that one end of the moving contact piece 5 is tilted and abuts against the static contact piece 4, thereby achieving conductive connection between the contact piece frame 3 and the static contact piece 4.

[0026] In the above structure, the inner bottom of the base 1 is provided with a positioning step matched with the corresponding mounting part. Each mounting part is threadedly connected with the corresponding positioning step, and after the contact piece is assembled, each mounting part can be connected by bolts.

[0027] In addition, each pin portion is further provided with a threaded hole 7, and a step may be further provided at one end of the threaded hole 7 so as to meet different user requirements and realize the need for a larger current load.

[0028] In this embodiment, the base 1 is made of plastic material, and the plastic material can be selected as BMC. Compared with the previously used ceramic ring structure, the base 1 made of this plastic material can save costs to a great extent.

[0029] In addition, for the liquid expansion type push rod mechanism, it can be set up according to the existing conventional structure. Specifically, the liquid expansion type push rod mechanism includes an adjusting shaft 8 fixedly penetrated through the cover shell 2, an adjusting screw 9 arranged in the adjusting shaft 8 and extending upward, a diaphragm box 10 connected to the bottom end of the adjusting shaft 8, a push rod 11 is connected to the bottom of the diaphragm box 10, an insulating plate 12 is installed between the base 1 and the cover shell 2, the bottom end of the push rod 11 passes through the insulating plate 12 and extends downward to the top of the contact frame 3, a flange is provided at the head of the push rod 11 and a compression spring 13 is provided between the flange and the insulating plate 12, and a temperature sensing tube 14 is connected to the diaphragm box 10.

[0030] In the assembly process, the contact frame 3 and the static contact piece 4 can be connected to the base 1 first. Specifically, the contact frame 3 and the static contact piece 4 can be respectively loaded into the punch of the stamping die, and the base 1 can be loaded into the corresponding die. Then the punch can drive the contact frame 3 and the static contact piece 4 to move downward at the same time and press them into the base 1 to achieve rapid positioning and assembly. The pins of the contact frame 3 and the static contact piece 4 pass through the base 1 to form a certain degree of pre-fixing effect, so as to ensure the stability of the contact frame 3 and the static contact piece 4. Then the material can be cut and each mounting part can be quickly threaded to the base 1. It can be seen that this structure can realize the assembly process of stamping and positioning the contact frame 3 and the static contact piece 4 at one time, thereby effectively improving the assembly efficiency.

[0031] The working principle of the liquid expansion temperature controller provided by the present embodiment which can improve the assembly efficiency is as follows: when the temperature in the environment where the temperature sensing tube 14 is located is low, one end of the moving contact piece 5 is away from the contact point of the stationary contact piece 4. When the ambient temperature rises, the contents of the temperature sensing tube 14 expand due to the heat and enter the membrane box 10, so that the push rod 11 is pushed and pushed downward. The bottom end of the push rod 11 will then abut against the moving contact piece 5. Since the middle part of the moving contact piece 5 is supported by the contact piece frame 3 to form a fulcrum, one end of the moving contact piece 5 can be tilted up to come into contact with the contact point of the stationary contact piece 4, thereby realizing the conduction of current. Example 2

[0032] like Figure 2-Figure 3 As shown, the difference between this embodiment and embodiment 1 is that an additional auxiliary static contact piece 6 is added. Specifically, it includes a base 1 and a cover shell 2 installed on the base 1, the cover shell 2 is installed with a liquid expansion push rod mechanism, the base 1 is installed with a contact piece frame 3, a static contact piece 4 and an auxiliary static contact piece 6, the contact piece frame 3, the static contact piece 4 and the auxiliary static contact piece 6 all include a mounting portion installed in the base 1 and fixedly connected to the base 1, and a pin portion extending downward from the bottom end of the base 1, the contact point of the static contact piece 4 is located directly above the contact point of the auxiliary static contact piece 6, a moving contact piece 5 is installed on the contact piece frame 3, one end of the moving contact piece 5 is placed on the contact point of the auxiliary static contact piece 6 to achieve a conductive connection between the contact piece frame 3 and the auxiliary static contact piece 6, and one end of the liquid expansion push rod mechanism can push against the moving contact piece 5, so that one end of the moving contact piece 5 is tilted and abuts against the contact point of the static contact piece 4, thereby achieving a conductive connection between the contact piece frame 3 and the static contact piece 4.

[0033] The liquid expansion temperature controller provided in this embodiment can improve the assembly efficiency and meet the application requirements of scenarios different from those of Example 1. When the liquid expansion push rod mechanism is not heated to cause the pushing action, the temperature controller can connect the contact frame 3 with the auxiliary static contact 6 to maintain a normally connected state of one circuit. When the temperature rises, the contact frame 3 can be connected with the static contact 5 to switch to the connected state of another circuit.

[0034] In order to make it easier for ordinary technicians in this field to understand the improvements of the present invention over the prior art, some drawings and descriptions of the present invention have been simplified, and the above-mentioned embodiments are better implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present invention.

Claims

1. A liquid expansion type temperature controller capable of improving assembly efficiency, comprising a base (1) and a cover (2) mounted on the base (1), wherein the cover (2) is mounted with a liquid expansion type push rod mechanism, and characterized in that: The base (1) is equipped with a contact piece frame (3) and a stationary contact piece (4), and the contact piece frame (3) and the stationary contact piece (4) both include a mounting portion mounted in the base (1) and fixedly connected to the base (1), and a pin portion extending downward from the bottom end of the base (1). A moving contact piece (5) is mounted on the contact piece frame (3), and one end of the liquid expansion push rod mechanism can push against the moving contact piece (5), so that one end of the moving contact piece (5) is tilted and abuts against the stationary contact piece (4), thereby achieving conductive connection between the contact piece frame (3) and the stationary contact piece (4).

2. A liquid expansion type temperature controller capable of improving assembly efficiency, comprising a base (1) and a cover (2) mounted on the base (1), wherein the cover (2) is mounted with a liquid expansion type push rod mechanism, and characterized in that: The base (1) is provided with a contact piece frame (3), a static contact piece (4) and a secondary static contact piece (6); the contact piece frame (3), the static contact piece (4) and the secondary static contact piece (6) all comprise a mounting portion mounted in the base (1) and fixedly connected to the base (1) and a pin portion extending downward from the bottom end of the base (1); the contact point of the static contact piece (4) is located directly above the contact point of the secondary static contact piece (6); a moving contact piece (5) is mounted on the contact piece frame (3); one end of the moving contact piece (5) rests on the contact point of the secondary static contact piece (6) so that the contact piece frame (3) and the secondary static contact piece (6) are connected to each other; one end of the liquid expansion push rod mechanism can push against the moving contact piece (5) so that one end of the moving contact piece (5) is tilted and contacts the contact point of the static contact piece (4), thereby connecting the contact piece frame (3) and the static contact piece (4) to each other.

3. The liquid expansion type thermostat capable of improving assembly efficiency according to claim 1 or 2, characterized in that: The inner bottom of the base (1) is provided with a positioning step which matches with the corresponding mounting portion.

4. The liquid expansion type thermostat capable of improving assembly efficiency according to claim 3, characterized in that: Each mounting portion is threadedly connected to the corresponding positioning step.

5. The liquid expansion type thermostat capable of improving assembly efficiency according to claim 4, characterized in that: Each pin portion is also provided with a threaded hole (7).

6. The liquid expansion type thermostat capable of improving assembly efficiency according to claim 5, characterized in that: The base (1) is made of plastic material.

7. The liquid expansion type thermostat capable of improving assembly efficiency according to claim 6, characterized in that: The plastic material is selected as BMC.

8. The liquid expansion type thermostat capable of improving assembly efficiency according to claim 7, characterized in that: The liquid expansion push rod mechanism comprises an adjustment shaft (8) fixedly inserted into the cover shell (2), an adjustment screw (9) arranged in the adjustment shaft (8) and extending upward, and a membrane box (10) connected to the bottom end of the adjustment shaft (8); a push rod (11) is connected to the bottom of the membrane box (10); an insulating plate (12) is installed between the base (1) and the cover shell (2); the bottom end of the push rod (11) passes through the insulating plate (12) and extends downward to the top of the contact plate frame (3); a flange is provided at the head of the push rod (11) and a compression spring (13) is provided between the flange and the insulating plate (12); and the membrane box (10) is connected to a temperature sensing tube (14).

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