Temperature sensor structure

Abstract

The utility model discloses a temperature sensor structure which comprises a temperature sensor shell, a linkage rod is arranged in the temperature sensor shell, a fusible piece is arranged at the bottom of the linkage rod, a fixing piece used for being connected with an actuator bottom plate is arranged at the upper end of the temperature sensor shell, and the fixing piece comprises a fixing part. A center hole for the linkage rod to penetrate through is formed in the center of the fixing part, S-shaped fixing lugs are rotationally and symmetrically arranged on the outer edge of the fixing part, and a pressing cap is arranged at the upper end of the linkage rod. The temperature sensor is simple in structure and reasonable in design, adopts the S-shaped fixing sheet, is convenient to manufacture, reduces material consumption, reduces manufacturing cost, can be fixed with the bottom plate of the actuating mechanism by directly screwing two screws at the bending position, and is convenient and fast to install.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature sensors, in particular to a temperature sensor structure. Background Art

[0002] The temperature sensor is an important component of the actuator on the valve body of fire dampers, smoke exhaust fire dampers, etc. When the temperature reaches 70℃ or 280℃, the high temperature causes the fusible piece to melt, and the rod core falls under the action of the spring to instantly close the main shaft valve. In the prior art, the temperature sensor and the actuator base plate are connected by threads, and the external thread and the internal thread are processed in the temperature sensor housing and the base plate mounting hole respectively, which consumes a lot of materials and has high production costs. When installing, the temperature sensor is screwed into the threaded hole of the base plate, which is cumbersome to operate and inconvenient to install. Summary of the invention

[0003] The utility model aims to solve the above technical problems and provide an S-shaped temperature sensor structure to improve the convenience of installation and reduce costs.

[0004] In order to achieve the above technical objectives and meet the above technical requirements, the technical solution adopted by the utility model is: a temperature sensor structure, including a temperature sensor housing, a linkage rod is arranged in the temperature sensor housing, and a fusible piece is arranged at the bottom of the linkage rod, characterized in that: a fixing plate for connecting with the actuator base plate is arranged at the upper end of the temperature sensor housing, the fixing plate includes a fixing part, a center hole for the linkage rod to pass through is arranged at the center of the fixing part, an S-shaped fixing ear is rotationally symmetrically arranged on the outer edge of the fixing part, and a pressure cap is arranged at the upper end of the linkage rod.

[0005] Preferably, the fixing portion is configured to be in a flat drum shape, and the fixing ears on both sides are respectively located on arc-shaped sides of the flat drum shape.

[0006] Preferably, the pressing cap is configured to be conical.

[0007] Preferably: the temperature sensor housing includes a first cylindrical portion and a first arc-shaped portion, the first arc-shaped portion is provided with an opening, the shell is concave at the opening and bent upward to form a hook, one end of the fusible link is provided on the hook, and the other end is connected to the linkage rod by a bolt.

[0008] Preferably: the linkage rod comprises a second cylindrical portion and a second arcuate portion, limit blocks are symmetrically arranged on both sides of the middle of the second cylindrical portion, one end of the compression spring abuts against the fixing plate, and the other end abuts against the limit block, and a waist-shaped groove is arranged on the second arcuate portion.

[0009] Compared with the traditional structure, the utility model has the following beneficial effects: simple structure, reasonable design, S-shaped fixing plate, easy production, reduced material consumption, reduced production cost, the temperature sensor can be fixed to the actuator base plate by directly screwing two screws at the bend, and the installation is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0011] Figure 2 for Figure 1 A top view of

[0012] Figure 3 This is a rear view structural diagram of the utility model;

[0013] Figure 4 This is a schematic diagram of the structure of the fixing plate of the utility model;

[0014] In the figure: 1. pressure cap, 2. linkage rod, 21. second cylindrical portion, 22. second arc-shaped portion, 3. fixing plate, 31. fixing portion, 32. fixing ear, 4. temperature sensor housing, 41. first cylindrical portion, 42. first arc-shaped portion, 43. opening, 5. compression spring, 6. limit block, 7. fusible link. DETAILED DESCRIPTION

[0015] The utility model is further described below.

[0016] See attached Figure 1 A temperature sensor structure comprises a temperature sensor housing 4, a linkage rod 2 is arranged in the temperature sensor housing 4, a fusible piece 7 is arranged at the bottom of the linkage rod 2, and the characteristic is that: a fixing plate 3 for connecting with an actuator base plate is arranged at the upper end of the temperature sensor housing 4, the fixing plate 3 comprises a fixing portion 31, a center hole for the linkage rod to pass through is arranged at the center of the fixing portion 31, an S-shaped fixing ear 32 is rotationally symmetrically arranged on the outer edge of the fixing portion 31, and a pressure cap 1 is arranged at the upper end of the linkage rod 2.

[0017] In this preferred embodiment, the fixing portion 31 is configured to be in a flat drum shape, and the fixing ears 32 on both sides are respectively located on the arc-shaped sides of the flat drum shape.

[0018] In this preferred embodiment, the pressing cap 1 is configured to be conical.

[0019] In this preferred embodiment, the temperature sensor housing 4 includes a first cylindrical portion 41 and a first arc-shaped portion 42. The first arc-shaped portion 42 is provided with an opening 43. The shell is concave and bent upward at the opening 43 to form a hook. One end of the fusible link 7 is set on the hook, and the other end is connected to the linkage rod 2 by a bolt.

[0020] In this preferred embodiment, the linkage rod 2 includes a second cylindrical portion 21 and a second arc-shaped portion 22. Limiting blocks 6 are symmetrically arranged on both sides of the middle of the second cylindrical portion 21. One end of the compression spring 5 is against the fixing plate 3, and the other end is against the limiting block 6. A waist-shaped groove is arranged on the second arc-shaped portion 22.

[0021] In specific implementation, the temperature sensor passes through the mounting hole of the actuator base plate, and two screws are screwed at the bend of the temperature sensor S-shaped fixing plate 3 to connect and fix the temperature sensor to the actuator base plate, which is convenient and quick to install. The temperature sensor is installed on products with fire protection requirements, and there is a compression spring 5 inside. The operating temperature of the temperature sensor is 73℃+0.5℃ (fire damper) and 280℃+2℃ (smoke exhaust fire damper). When the temperature reaches the operating temperature, the high temperature causes the fusible piece 7 to melt and disconnect. Under the action of the compression spring 5, the linkage rod 2 falls, and the pressure cap 1 presses down the movable plate of the mechanism to close the main shaft valve.

[0022] The above embodiments of the present invention are merely examples to clearly illustrate the present invention, but are not intended to limit the protection scope of the present invention. All equivalent technical solutions also belong to the scope of the present invention. The patent protection scope of the present invention should be defined by the claims.

Claims

1. A temperature sensor structure, comprising a temperature sensor housing (4), a linkage rod (2) being arranged inside the temperature sensor housing (4), a fusible piece (7) being arranged at the bottom of the linkage rod (2), characterized in that: A fixing plate (3) for connecting to the actuator base plate is arranged at the upper end of the temperature sensor housing (4), the fixing plate (3) comprising a fixing portion (31), a center hole for a linkage rod to pass through is arranged at the center of the fixing portion (31), an S-shaped fixing ear (32) is rotationally symmetrically arranged at the outer edge of the fixing portion (31), and a pressure cap (1) is arranged at the upper end of the linkage rod (2); The fixing portion (31) is configured as a flat drum shape, and the fixing ears (32) on both sides are respectively located on the arc-shaped sides of the flat drum shape; The temperature sensor housing (4) comprises a first columnar portion (41) and a first arc-shaped portion (42); the first arc-shaped portion (42) is provided with an opening (43); the housing is concave at the opening (43) and is bent upward to form a hook; one end of the fusible link (7) is provided on the hook, and the other end is connected to the linkage rod (2) via a bolt.

2. The temperature sensor structure according to claim 1, characterized in that: The pressing cap (1) is configured to be conical.

3. The temperature sensor structure according to claim 1, characterized in that: The linkage rod (2) comprises a second columnar portion (21) and a second arc-shaped portion (22); limit blocks (6) are symmetrically arranged on both sides of the middle of the second columnar portion (21); one end of the compression spring (5) abuts against the fixing plate (3) and the other end abuts against the limit block (6); and a waist-shaped groove is arranged on the second arc-shaped portion (22).

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