A kind of encapsulation fence structure of liquid expansion temperature controller

Abstract

The utility model relates to a kind of encapsulation fence structure of liquid expansion temperature controller, including installation shell and jump module, diaphragm box is equipped in the installation shell, electric circuit is equipped on the jump module, and touch switch is connected in series on electric circuit, diaphragm box is pushed touch switch to disconnect electric circuit when liquid rises, the installation shell includes support fixed frame and two encapsulation fences, diaphragm box is connected on support fixed frame, jump module is connected on the lower side of support fixed frame, the front and rear sides of support fixed frame are equipped with open mouth, the two encapsulation fences cover are equipped at the open mouth of front and rear, and two encapsulation fences are connected on jump module or support fixed frame;This liquid expansion temperature controller uses installation shell, and the encapsulation fence of the side of support fixed frame does not need to play the role of support, can be independently set, so that encapsulation fence can be made of thinner sheet metal material relative to support fixed frame, to reduce the production cost of installation shell.

Description

Technical Field

[0001] This utility model relates to the field of liquid expansion temperature controllers, specifically a packaging plate structure for a liquid expansion temperature controller. Background Technology

[0002] Currently, the structure of a liquid expansion thermostat is shown in Chinese patent document, application number 202320450436.5, which discloses a BMC base. The BMC base is used to assemble and fix the diaphragm box and provide support. As can be seen from the accompanying drawings, the BMC base includes an upper metal shell with encapsulation plates surrounding the diaphragm box. However, in actual use, only one pair of encapsulation plates is needed to provide sufficient support for the diaphragm box. But because the metal shell is integrally stamped, the surrounding encapsulation plates can only be made of sheet metal of the same thickness by bending, which increases the production cost of the BMC base. Therefore, the applicant has improved and perfected the liquid expansion thermostat to solve the above problems and provide it for consumers to choose from. Utility Model Content

[0003] The purpose of this utility model is to solve the above-mentioned existing problems and provide a simple and reasonable encapsulation plate structure for a liquid expansion temperature controller.

[0004] A packaging enclosure structure for a liquid expansion temperature controller includes a mounting shell and a snap-action module. The mounting shell contains a diaphragm box, and the snap-action module has conductive lines connected in series with a touch switch. When the liquid expands, the diaphragm box pushes the touch switch to disconnect the conductive lines. The mounting shell includes a U-shaped support frame and two packaging enclosures. The diaphragm box is connected to the support frame, and the snap-action module is connected to the lower side of the support frame. The support frame has openings on its front and rear sides, and the two packaging enclosures cover these openings and are connected to either the snap-action module or the support frame.

[0005] The objective of this utility model can also be achieved by the following technical measures: As a more specific solution, the two bottom ends of the support frame are provided with outwardly folded lower mounting ears, and the lower mounting ears are provided with a first connecting hole. The pop-up module is provided with a pair of connecting ears, and the connecting ears are provided with a second connecting hole corresponding to the first connecting hole. The fastening unit passes through the second connecting hole and the first connecting hole in sequence to connect the pop-up module to the support frame.

[0006] As a further solution, a baffle frame is also included, with two encapsulated baffles integrally connected to opposite sides of the baffle frame, and the baffle frame is assembled between the support fixing frame and the connecting lug, and a positioning opening is provided on the baffle frame to cooperate with the jump module.

[0007] As a further solution, the bottom surface of the enclosure frame is provided with a first positioning part, and the connecting ear is provided with a second positioning part. Through the cooperation of the second positioning part and the first positioning part, the enclosure frame and the jump module form a directional and foolproof cooperation.

[0008] As a further embodiment, the first positioning part includes several symmetrically arranged positioning protrusions, which define a positioning area. The two connecting ears are placed in the positioning area, and the edges of the two connecting ears form a second positioning part and constitute a limiting fit with the several positioning protrusions.

[0009] As a further solution, the two ends of the enclosure frame are provided with third connecting holes corresponding to the first connecting holes. The fastening unit passes through the second connecting hole, the third connecting hole and the first connecting hole in sequence, so that the enclosure frame is assembled and connected to the jump module between the support fixing frame and the connecting ear.

[0010] As a further embodiment, the snap-on module includes a switch housing for a snap-on thermostat, a metal cover fitted on the top of the switch housing, an opening provided in the metal cover, and two encapsulation plates integrally connected to the front and rear sides of the metal cover.

[0011] As a further embodiment, the two connecting ears and the two encapsulation plates are integrally formed with the metal cap by stamping, and the two connecting ears are integrally connected to the left and right sides of the metal cap.

[0012] As a further embodiment, the touch switch includes a movable contact and a stationary contact that elastically contact each other. A push assembly is provided on the lower side of the diaphragm box along the axial direction. The push assembly is adjacent to or abuts against the movable contact. When the diaphragm box expands, the push assembly pushes the movable contact away to disconnect the conductive circuit.

[0013] As a further embodiment, it also includes a capillary tube and a temperature sensing cylinder, one end of which extends out of the mounting housing and is fixedly connected to the diaphragm box, and the other end of which extends out of the mounting housing and is connected to the temperature sensing cylinder.

[0014] The beneficial effects of this utility model are as follows: This utility model discloses a packaging plate structure for a liquid expansion temperature controller. The mounting shell of this liquid expansion temperature controller consists of two parts: a support frame and a packaging plate. The packaging plates on both sides of the support frame do not need to provide support and can therefore be set independently. This allows the packaging plates to be made of a thinner sheet metal material than the support frame, thereby reducing the production cost of the mounting shell and the overall cost of the liquid expansion temperature controller. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the liquid expansion temperature controller in this utility model.

[0016] Figure 2 This is an exploded structural diagram of the first embodiment of the present invention.

[0017] Figure 3 This is an exploded view of the outer casing in this utility model.

[0018] Figure 4 This is a schematic cross-sectional view of the liquid expansion temperature controller in this utility model.

[0019] Figure 5 This is an exploded structural diagram of the second embodiment of the present invention.

[0020] Figure 6 This is a top view of the support and fixing frame structure in this utility model.

[0021] Figure 7 This is a schematic cross-sectional view of the support and fixing frame in this utility model.

[0022] Figure 8 This is a schematic diagram of the three-dimensional angle structure of the support and fixing frame in this utility model.

[0023] Figure 9 This is a schematic diagram of the positioning and fitting structure of the middle panel frame and the connecting ear in this utility model.

[0024] Figure 10 This is a schematic diagram of the positioning protrusion structure in this utility model. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] First embodiment: See Figures 1 to 4 As shown, a packaging enclosure structure for a liquid expansion temperature controller includes a mounting shell 1 and a snap-action module 2. The mounting shell 1 contains a diaphragm box 3, and the snap-action module 2 has conductive lines. A touch switch 4 is connected in series on the conductive lines. When the liquid expands, the diaphragm box 3 pushes the touch switch 4 to disconnect the conductive lines. The mounting shell 1 includes a U-shaped support frame 5 and two packaging enclosures 6. The diaphragm box 3 is connected to the support frame 5, and the snap-action module 2 is connected to the lower side of the support frame 5. The support frame 5 has openings 501 on its front and rear sides, and the two packaging enclosures 6 cover the front and rear openings 501, and the two packaging enclosures 6 are connected to the snap-action module 2 or the support frame 5.

[0027] The mounting housing 1 used in this liquid expansion temperature controller consists of two parts: a support frame 5 and an encapsulation plate 6. The encapsulation plates 6 on both sides of the support frame 5 do not need to provide support, so they can be set independently. This allows the encapsulation plates 6 to be made of a thinner sheet metal material than the support frame 5, thereby reducing the production cost of the mounting housing 1 and the overall cost of the liquid expansion temperature controller.

[0028] The two bottom ends of the support frame 5 are provided with outwardly folded lower mounting ears 51. The lower mounting ears 51 are provided with a first connecting hole 511. The jump module 2 is provided with a pair of connecting ears 21. The connecting ears 21 are provided with a second connecting hole 211 corresponding to the first connecting hole 511. The fastening unit 7 passes through the second connecting hole 211 and the first connecting hole 511 in sequence, so that the jump module 2 is connected to the support frame 5.

[0029] See Figure 6 As shown: The top of the support bracket 5 is provided with an upper mounting ear 52 that is bent outward on the opposite side. The upper mounting ear 52 is provided with an upper connecting hole 521 for installing a liquid expansion thermostat. The lower mounting ear 51 and the upper mounting ear 52 are arranged opposite each other in the vertical direction.

[0030] This bracket structure places the lower mounting ear 51 and the upper mounting ear 52 on the left and right sides, which can make full use of the horizontal space of the bracket structure and reduce the vertical area of ​​the bracket structure. This allows the liquid expansion thermostat to maintain a compact structure, facilitates the installation of the liquid expansion thermostat, and reduces the requirements for installation space.

[0031] In this embodiment, the first connecting hole 511 and the upper connecting hole 521 are arranged opposite each other on the same side, with the upper connecting hole 521 being arranged on the outer side relative to the first connecting hole 511; the first connecting hole 511 and the upper connecting hole 521 are not coaxially arranged, and the first connecting hole 511 and the upper connecting hole 521 are arranged on the same vertical plane X, so that the connection point of the liquid expansion thermostat is set in a symmetrical position, making the installation more stable.

[0032] The snap-on module 2 includes a switch housing 22 for a snap-on thermostat. A metal cover 23 is fitted on the top of the switch housing 22. The metal cover 23 has an opening 231 for clearance. The two encapsulation plates 6 are integrally connected to the front and rear sides of the metal cover 23. The sheet metal material used to manufacture the metal cover 23 is also thinner than the support bracket 5. Therefore, the encapsulation plate 6 and the metal cover 23 are integrally molded, which can improve production efficiency, further simplify the structure of the liquid expansion temperature controller, and reduce costs. After the switch housing 22 is assembled and connected to the support bracket 5, the encapsulation plate 6 only needs to be bent upwards to complete the encapsulation work of the encapsulation plate 6. Moreover, the two connecting ears 21 and the two encapsulation plates 6 are integrally formed with the metal cover 23 by stamping. The two connecting ears 21 are integrally connected to the left and right sides of the metal cover 23. This structure enables the integrally stamped metal cover 23 to have three different functions: to encapsulate the lower bulging steel sheet 24, to assemble and connect with the support bracket 5, and to cover the opening 501.

[0033] The touch switch 4 includes a movable contact 41 and a stationary contact 42 that elastically contact each other. A push assembly is provided on the lower side of the diaphragm box 3 along the axial direction. The push assembly is adjacent to or abuts against the movable contact 41. When the diaphragm box 3 expands, the push assembly pushes the movable contact 41 open to disconnect the conductive circuit.

[0034] The push assembly includes a circular, arc-shaped agitated steel sheet 24 and a push rod 25. The agitated steel sheet 24 is encapsulated on the top of the switch housing 22 by a metal cover 23, and the central part of the agitated steel sheet 24 is exposed through an avoidance opening 231 to facilitate its engagement with the energy storage spring 8 described below. The push rod 25 is slidably connected inside the switch housing 22 and abuts against the agitated steel sheet 24 and the moving contact piece 41. The actuating end of the diaphragm 3 abuts against the center position of the surface of the agitated steel sheet 24.

[0035] The pushing assembly also includes an energy storage spring 8. The actuating end of the diaphragm box 3 is provided with a diaphragm box handle 31. One end of the energy storage spring 8 is sleeved on the diaphragm box handle 31, and the other end of the energy storage spring 8 abuts against the center position of the surface of the actuating steel sheet 24.

[0036] When the diaphragm 3 expands, the energy storage spring 8 initially presses against the center of the surface of the agitator steel sheet 24. When both ends are restricted, the energy storage spring 8 begins to store elastic potential energy. When the elastic potential energy reaches a certain value, the agitator steel sheet 24 deforms downwards instantly under force, thereby quickly pushing the push rod 25 to press against the moving contact 41 and the stationary contact 42 to separate and disconnect the conductive line. The rapid separation of the moving contact 41 and the stationary contact 42 can prevent electric shock between them and can greatly improve the service life of the touch switch 4.

[0037] It also includes a capillary tube 9 and a temperature sensing cylinder 10. One end of the capillary tube 9 extends out of the mounting housing 1 and is fixedly connected to the diaphragm box 3, while the other end of the capillary tube 9 extends out of the mounting housing 1 and is connected to the temperature sensing cylinder 10. The temperature sensing cylinder 10 is attached to the heating element. When the temperature of the heating element exceeds the specified threshold, the liquid inside the temperature sensing cylinder 10 expands and enters the diaphragm box 3 through the capillary tube 9, causing the diaphragm box 3 to bulge downwards and push the push rod 25 downwards. This structure can convert thermal energy into kinetic energy.

[0038] See Figure 7 and Figure 8 As shown: The support fixing frame 5 includes a support top plate 13 and support side plates 12 connected to the left and right sides of the support top plate 13. The support side plates 12 have the same width as the support top plate 13, and the support side plates 12 are stamped with plates that are connected to the side of the support top plate 13. The plates are bent in two ways to form upper mounting ears 52. By stamping the upper mounting ears 52 out of the support side plate 12 itself, this structure eliminates the need to fix or weld the upper mounting ears 52 to the support bracket 5, which can improve production efficiency. Moreover, the position where the upper mounting ears 52 are stamped out of the support side plate 12 forms an opening, which helps the heat dissipation of the diaphragm structure and avoids the temperature around the liquid expansion thermostat from affecting the expansion of the diaphragm.

[0039] The upper mounting ear 52 includes a support portion 522 extending upward relative to the support top plate 13 and a connecting portion 523 extending outward relative to the support side plate 12. The upper connecting hole 521 is opened on the connecting portion 523. After the liquid expansion thermostat is assembled and connected through this structure, a gap can be maintained between the liquid expansion thermostat and the mounting surface to avoid direct contact between the support top plate 13 and the mounting surface.

[0040] The width of the lower mounting ear 51 is the same as the width of the support bracket 5, and the left and right corners 53 of the lower mounting ear 51 are rounded. The rounded corners of the lower mounting ear 51 make the liquid expansion thermostat look more beautiful, and can also remove the burrs produced by machining, so that the surface of the liquid expansion thermostat is not sharp and avoids cutting production personnel.

[0041] The lower mounting lug 51 has an upwardly protruding lower connecting ring 54 integrally stamped on it, and the lower connecting ring 54 defines the first connecting hole 511; the upper mounting lug 52 has a downwardly protruding upper connecting ring 55 integrally stamped on it, and the upper connecting ring 55 defines the upper connecting hole 521; the inner walls of the lower connecting ring 54 and the upper connecting ring 55 are both provided with internal thread structures. When the support bracket 5 is assembled with the pop-up module 2, the screw is inserted into the first connection hole 511 from bottom to top. The lower side of the pop-up module 2 provides sufficient operating space for the screwdriver. When the liquid expansion thermostat is assembled on the mounting surface, the screw is inserted into the upper connection hole 521 from top to bottom to avoid the protruding lower mounting lug 51 interfering with the operation of the screwdriver.

[0042] One of the supporting side plates 12 has a tube outlet recess 121 for leading out a capillary tube on its side. The supporting side plate 12 has a flexible edge 122 for clamping the capillary tube, which is punched outward toward the other side. The tube outlet recess 121 and the flexible edge 122 are set at the same height. After the capillary tube is led out through the tube outlet notch 121, it is bent laterally towards the flexible edge 122, so that the capillary tube is fixed between the upper mounting ear 52 and the lower mounting ear 51. The protruding upper mounting ear 52 and lower mounting ear 51 provide a certain support and protection for the capillary tube, while the flexible edge 122 itself can clamp the capillary tube, so that the capillary tube will not be pulled and broken off from the membrane box.

[0043] An adjusting screw hole 131 is provided in the center of the supporting top plate 13 for connecting a temperature regulating rod. A circumferential reinforcing rib 132 surrounding the adjusting screw hole 131 and radial reinforcing ribs 113 extending toward the four corners of the supporting top plate 13 are stamped on the supporting top plate 13. Since multiple structures are formed on the supporting top plate 13 by stamping, the reinforcing ribs can improve the strength of the supporting top plate 13 and will not deform due to bending or stamping.

[0044] Second embodiment: The second embodiment differs from the first embodiment in that: see... Figure 5 and Figure 9 As shown, it also includes a baffle frame 11, with two encapsulation baffles 6 integrally connected to opposite sides of the baffle frame 11. The baffle frame 11 is assembled between the support frame 5 and the connecting ear 21. The baffle frame 11 has a positioning opening 111 that cooperates with the snap-action module 2. In this embodiment, the encapsulation baffles 6 are independently installed between the support frame 5 and the connecting ear 21, so that the metal cover 23 and the connecting ear 21 can still adopt a conventional structure (the metal cover 23 and the connecting ear 21 are common components in existing snap-action temperature controllers), without the need for additional molds, thus reducing production costs.

[0045] The bottom surface of the enclosure frame 11 is provided with a first positioning part, and the connecting ear 21 is provided with a second positioning part. Through the cooperation of the second positioning part and the first positioning part, the enclosure frame 11 and the jump module 2 form a directional and foolproof fit. This allows the assembly process between the jump module 2 and the enclosure frame 11 to be used on fully automated assembly equipment, and enables the enclosure frame 11 to be positioned on the jump module 2, preventing the enclosure frame 11 from rotating and shifting relative to the jump module 2 after it is fitted into the jump module 2.

[0046] Specifically: the two connecting ears 21 form a rhombus structure, the four edges 212 of the rhombus structure form the second positioning part, and the first positioning part includes four symmetrically arranged positioning protrusions 112, as shown in the figure. Figure 9 The rectangular structure shown, or as... Figure 10The cylindrical structure shown has a positioning area defined by the four positioning protrusions 112 that fits the rhomboid structure. After the two connecting ears 21 are placed in the positioning area, the four positioning protrusions 112 are limited on the four edges 212. The axial rotation of the jump module 2 can be restricted by the four positioning protrusions 112.

[0047] The two ends of the enclosure frame 11 are provided with third connecting holes 113 corresponding to the first connecting hole 511. The fastening unit 7 passes through the second connecting hole 211, the third connecting hole 113 and the first connecting hole 511 in sequence, so that the enclosure frame 11 is assembled and connected between the support fixing frame 5 and the connecting ear 21. Before the snap-on module 2 is assembled and connected to the lower side of the mounting housing 1, the enclosure frame 11 is first fitted onto the metal cover 23 using the positioning opening 111, which can restrict the sliding of the enclosure frame 11 in the horizontal direction. Then, the connecting ear 21 is aligned with the support fixing frame 5, and finally the screws are passed through each connecting hole to fix the snap-on module 2. The screw is preferably passed through the second connecting hole 211, the third connecting hole 113 and the first connecting hole 511 from bottom to top. Since the space under the connecting lug 21 is open, it will not obstruct the movement of the screwdriver. However, if the screw is passed through the first connecting hole 511, the third connecting hole 113 and the second connecting hole 211 from top to bottom, the screwdriver is easily obstructed by the side wall of the support bracket 5.

[0048] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A packaging enclosure structure for a liquid expansion temperature controller, comprising a mounting shell and a snap-action module, wherein a diaphragm is disposed within the mounting shell, a conductive circuit is disposed on the snap-action module, and a touch switch is connected in series on the conductive circuit, wherein the diaphragm pushes the touch switch to disconnect the conductive circuit when the liquid expands, characterized in that: The mounting housing includes a "冂"-shaped support fixing frame and two enclosing sealing plates, the diaphragm capsule is connected to the support fixing frame, the snap-action module is connected to the lower side of the support fixing frame, open ports are provided on the front and rear sides of the support fixing frame, the two enclosing sealing plates are covered on the front and rear open ports, and the two enclosing sealing plates are connected to the snap-action module or the support fixing frame.

2. The encapsulation plate structure of a liquid expansion temperature controller according to claim 1, characterized in that: Two bottom ends of the support fixing frame are provided with lower mounting ears folded outwards, the lower mounting ears are provided with first connecting holes, the snap-action module is provided with a pair of connecting ears, the connecting ears are provided with second connecting holes corresponding to the first connecting holes, and the snap-action module is connected to the support fixing frame by a fastening unit sequentially passing through the second connecting holes and the first connecting holes.

3. The encapsulation plate structure of a liquid expansion temperature controller according to claim 2, characterized in that: It further comprises a surrounding plate frame, the two enclosing sealing plates are integrally connected to the opposite side edges of the surrounding plate frame, the surrounding plate frame is assembled and connected between the support fixing frame and the connecting ears, and the surrounding plate frame is provided with a positioning opening matched with the snap-action module.

4. The encapsulation plate structure of a liquid expansion temperature controller according to claim 3, characterized in that: The bottom surface of the surrounding plate frame is provided with a first positioning portion, the connecting ears are provided with a second positioning portion, and a directional fool-proof fit is formed between the surrounding plate frame and the snap-action module through the cooperation of the second positioning portion and the first positioning portion.

5. The encapsulation plate structure of a liquid expansion temperature controller according to claim 4, characterized in that: The first positioning portion includes a plurality of symmetrically arranged positioning protrusions, a positioning area is defined between the plurality of positioning protrusions, the two connecting ears are placed in the positioning area, and the edges of the two connecting ears form the second positioning portion and form a limit fit with the plurality of positioning protrusions.

6. The encapsulation enclosure structure of a liquid expansion temperature controller according to claim 3, characterized in that: Both ends of the surrounding plate frame are provided with third connecting holes corresponding to the first connecting holes, and the surrounding plate frame is assembled and connected between the support fixing frame and the connecting ears of the snap-action module by the fastening unit sequentially passing through the second connecting holes, the third connecting holes and the first connecting holes.

7. The encapsulation enclosure structure of a liquid expansion temperature controller according to claim 2, characterized in that: The snap-action module includes a switch housing applied to a snap-action temperature controller, a metal sealing cover is sleeved on the top of the switch housing, the metal sealing cover is provided with an avoiding opening, and the two enclosing sealing plates are integrally connected to the front and rear side edges of the metal sealing cover.

8. The encapsulation plate structure of a liquid expansion temperature controller according to claim 7, characterized in that: The two connecting ears and the two enclosing sealing plates are integrally formed with the metal sealing cover by stamping, and the two connecting ears are integrally connected to the left and right side edges of the metal sealing cover.

9. The encapsulation plate structure of a liquid expansion temperature controller according to claim 1, characterized in that: The touch switch includes a movable contact piece and a static contact piece that elastically touch each other, a pushing assembly is arranged on the lower side of the diaphragm capsule along the axial direction, the pushing assembly is adjacent to or abuts against the movable contact piece, and the diaphragm capsule pushes the movable contact piece open through the pushing assembly when the liquid expands, so as to disconnect the conductive circuit.

10. The encapsulation plate structure of a liquid expansion temperature controller according to claim 1, characterized in that: It further comprises a capillary tube and a temperature sensing cylinder, one end of the capillary tube extends out of the mounting housing and is fixedly connected with the diaphragm capsule, and the other end of the capillary tube extends out of the mounting housing and is connected with the temperature sensing cylinder.

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