Resistance test clamp of kick temperature controller

Abstract

The utility model relates to a resistance test clamp of a kick temperature controller, comprising a clamp seat, the top surface of the clamp seat is provided with a test station used for positioning the kick temperature controller placed laterally, the left side and the right side of the test station are both provided with installation cavities, a pair of insulation clamping seats moving relatively is elastically assembled in each installation cavity, and the insulation clamping seats are arranged in the clamp seat. Each insulating clamping seat is fixedly connected with a conductive clamping plate, each conductive clamping plate is connected with a lead-out wire, a clamping gap is formed between two opposite conductive clamping plates, and the clamping gaps are used for clamping a wiring terminal piece of the kick temperature controller; the resistance test clamp can accurately fix the kick temperature controller, the wiring terminal sheet of the kick temperature controller can be rapidly clamped through the conductive clamping plate capable of elastically moving, electric connection is achieved while clamping is completed, the resistance test clamp can be matched with wiring terminal sheets of different lengths for use, the test efficiency can be improved, and the test result is reliable.

Description

Technical Field

[0001] The utility model relates to the field of resistance testing equipment, in particular to a resistance testing fixture for a snap-action thermostat. Background Technique

[0002] A snap-action thermostat is a series of automatic control components that, according to the temperature change of the working environment, undergo physical deformation inside the switch, generate certain special effects, and cause on or off actions. During the production process of the snap-action thermostat, it is necessary to strictly control the quality of the thermostat. To ensure the temperature control quality of the thermostat, it is usually necessary to test the resistance between the two terminal pieces of the snap-action thermostat. By judging whether the internal resistance of the thermostat reaches the set value, it is possible to determine whether the temperature control range during the subsequent use of the thermostat is qualified, so as to ensure the reliability of the thermostat's use. However, the existing resistance testing devices have unsatisfactory effects. Therefore, the applicant provides a new resistance testing fixture for consumers to choose and use. Summary of the Invention

[0003] The purpose of the utility model is to provide a resistance testing fixture for a snap-action thermostat with a simple and reasonable structure, convenient installation, and stable structure.

[0004] A resistance testing fixture for a snap-action thermostat includes a fixture base. A testing station for positioning the horizontally placed snap-action thermostat is provided on the top surface of the fixture base. Installation cavities are opened on both the left and right sides of the testing station. A pair of relatively moving insulating clamping seats are elastically assembled in each installation cavity. A conductive clamping plate is fixedly connected to each insulating clamping seat, and a lead wire is connected to the conductive clamping plate. A clamping gap is formed between the two opposite conductive clamping plates, and the clamping gap is used for clamping the terminal pieces of the snap-action thermostat.

[0005] The purpose of the utility model can also be solved by the following technical measures:

[0006] As a more specific solution, limiting slide bars extend on both the left and right sides of the insulating clamping seat. Vertical chutes corresponding to the limiting slide bars are opened on the side walls of the installation cavity. The width of the vertical chute is greater than the width of the limiting slide bar. A vertical sliding fit and a front-back sliding fit are formed between the vertical chute and the limiting slide bar.

[0007] As a further solution, a spring positioning groove is opened on the back surface of the insulating clamping seat. The fixture base is screwed with a positioning bolt that extends into the installation cavity from the outside corresponding to the spring positioning groove. A return spring is sleeved outside the positioning bolt. One end of the return spring abuts against the side wall of the installation cavity, and the other end abuts against the spring positioning groove.

[0008] As a further solution, clamping plate positioning grooves are formed in the opposite surfaces of the insulating clamping seat along the height direction. Connecting through holes are formed in the insulating clamping seat corresponding to the clamping plate positioning grooves. Threaded holes are formed in the conductive clamping plate corresponding to the connecting through holes. The conductive clamping plate is tightly assembled in the clamping plate positioning groove by a fastening bolt passing through the connecting through hole and the threaded hole.

[0009] As a further solution, one or more positioning plates extending in the left - right direction are provided on the top surface of the fixture seat. The positioning plates are arranged parallel to each other. Positioning grooves matching the surface curvature of the snap - acting thermostat are formed in the positioning plates. The testing stations are jointly formed among the positioning grooves.

[0010] As a further solution, an inclined guiding surface is formed on the top of the conductive clamping plate close to the opposite surface, and an inlet for the clamping gap is formed between the two opposite guiding surfaces.

[0011] As a further solution, at least a part of the opposite sides of the conductive clamping plate protrude outside the positioning groove; the bottom surface of the conductive clamping plate abuts or is close to the bottom of the installation cavity, and the top of the conductive clamping plate extends above the installation cavity, and a clamping gap is formed between the extended parts.

[0012] As a further solution, a connecting structure is provided at the bottom of the fixture seat; the connecting structure includes an internal threaded hole.

[0013] As a further solution, the height of the insulating clamping seat is adapted to the depth of the installation cavity; a clearance fit is formed between the insulating clamping seat and the installation cavity along the width direction.

[0014] As a further solution, a resistance testing system is further included, and the lead - out wires on each conductive clamping plate are electrically connected to the resistance testing system.

[0015] The beneficial effects of the present utility model are as follows:

[0016] A resistance testing fixture for a snap - acting thermostat of the present utility model can accurately fix the snap - acting thermostat. The conductive clamping plate that can move elastically quickly clamps the terminal pieces of the snap - acting thermostat, and realizes electrical connection while the clamping is completed. It can be adapted to use terminal pieces of different lengths, can improve the testing efficiency, and the test results are reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of an embodiment in the present utility model.

[0018] Figure 2 It is a schematic cross - sectional structural diagram of the resistance testing fixture in the present utility model.

[0019] Figure 3This is a schematic exploded view of the resistance test fixture in the present utility model.

[0020] Figure 4 This is a top view structure and partial enlarged schematic view of the resistance test fixture in the present utility model.

[0021] Figure 5 This is a schematic connection structure view in the present utility model.

[0022] Figure 6 This is a schematic connection structure view of the resistance test fixture and the resistance test system in the present utility model. Detailed implementation manners

[0023] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] As Figures 1 to 4 shown, a resistance test fixture for a snap-acting thermostat includes a fixture base 1. A test station 2 for positioning the laterally placed snap-acting thermostat A is provided on the top surface of the fixture base 1. Installation cavities 3 are opened on both the left and right sides of the test station 2. A pair of relatively movable insulating clamping seats 4 are elastically assembled in each installation cavity 3. A conductive clamping plate 5 is fixedly connected to each insulating clamping seat 4, and a lead wire 6 is connected to the conductive clamping plate 5. A clamping gap 501 is formed between the two opposite conductive clamping plates 5, and the clamping gap 501 is used to clamp the terminal piece A1 of the snap-acting thermostat A.

[0025] This resistance test fixture can accurately fix the snap-acting thermostat, quickly clamp the terminal piece A1 of the snap-acting thermostat A through the elastically movable conductive clamping plate 5, and achieve electrical connection while the clamping is completed. It can be adapted to the use of terminal pieces A1 of different lengths, which can improve the test efficiency and the test results are reliable.

[0026] Limit stop strips 41 extend on both the left and right sides of the insulating clamping seat 4. A vertical chute 31 corresponding to the limit stop strip 41 is provided on the side wall of the installation cavity 3. The width H1 of the vertical chute 31 is greater than the width H2 of the limit stop strip 41. The vertical chute 31 and the limit stop strip 41 form an up-and-down sliding fit and a front-and-back sliding fit;

[0027] The cooperation between the vertical chute 31 and the limit stop strip 41 can make the insulating clamping seat 4 slide vertically into the installation cavity 3, preventing the insulating clamping seat 4 from swinging left and right or front and back. During the test, when the snap-acting thermostat A is loaded, the terminal piece A1 squeezes open the conductive clamping plate 5, causing the insulating clamping seat 4 to slide backward. The relatively wide vertical chute 31 has enough space for the front-and-back position of the limit stop strip 41.

[0028] A spring positioning groove 44 is formed on the back surface of the insulating clamping seat 4. A positioning bolt 6 is screwed to the fixture seat 1 corresponding to the spring positioning groove 44 and extends into the installation cavity 3 from the outside to the inside. A return spring 7 is sleeved outside the positioning bolt 6. One end of the return spring 7 abuts against the side wall of the installation cavity 3, and the other end abuts against the spring positioning groove 44. The return spring 7 is positioned by the spring positioning groove 44 and the positioning bolt 6. At the same time, the return spring 7 enables the conductive clamping plate 5 to elastically clamp the terminal piece A1, adapts to terminal pieces A1 of different thicknesses, has high flexibility and good practicability, and has stable clamping and maintains contact with the terminal piece A1.

[0029] Clamping plate positioning grooves 42 are formed in the opposite surfaces of the insulating clamping seat 4 along the height direction. Connection through holes 43 are formed in the insulating clamping seat 4 corresponding to the clamping plate positioning grooves 42. Threaded holes 51 are formed in the conductive clamping plate 5 corresponding to the connection through holes 43. The conductive clamping plate 5 is firmly assembled in the clamping plate positioning grooves 42 by passing a fastening bolt 10 through the connection through holes 43 and the threaded holes 51.

[0030] The insulating clamping seat 4 and the conductive clamping plate 5 are assembled with different materials. The conductive clamping plate 5 is connected to the insulating clamping seat 4 through the fastening bolt 10 and is fixed in the clamping plate positioning grooves 42 to play a positioning role.

[0031] One or more positioning plates 8 extending in the left - right direction are provided on the top surface of the fixture seat 1. The positioning plates 8 are arranged parallel to each other. Positioning grooves 801 matching the surface curvature of the snap - acting thermostat A are formed on the positioning plates 8. The positioning grooves 801 together form a test station 2. Matching the surface curvature of the snap - acting thermostat A can achieve positioning and prevent the snap - acting thermostat A from sliding left and right.

[0032] An inclined guiding surface 502 is formed on the top of the conductive clamping plate 5 near the opposite surface. A cut - in port 503 of the clamping gap 501 is formed between the two opposite guiding surfaces. When the snap - acting thermostat A is inserted into the clamping gap 501, fuzzy assembly is realized through the inclined guiding surface 502, which can improve the insertion speed and testing efficiency.

[0033] At least a part of the opposite sides of the conductive clamping plate 5 protrudes outside the positioning grooves 801 to ensure that the terminal piece A1 of the snap - acting thermostat A is clamped between the two conductive clamping plates 5. The bottom surface of the conductive clamping plate 5 abuts against or is close to the bottom of the installation cavity 3. The top of the conductive clamping plate 5 extends above the installation cavity 3, and a clamping gap 501 is formed between the extended parts.

[0034] A connection structure is provided at the bottom of the fixture seat 1; as Figure 5 shown, the connection structure includes an internal threaded hole 11. The resistance test fixture is fixedly connected to the workbench by using the internal threaded hole 11, and a threaded post matching the internal threaded hole 11 is provided on the workbench.

[0035] The height of the insulating clamping seat 4 is adapted to the depth of the installation cavity 3, and the height of the insulating clamping seat 4 is the same as the depth of the installation cavity 3, so that the entire insulating clamping seat 4 is placed in the installation cavity; a clearance fit is formed between the insulating clamping seat 4 and the installation cavity 3 in the width direction.

[0036] As Figure 6 shown, a resistance testing system 9 is further included, and the lead wires 6 on each conductive clamping plate 5 are electrically connected to the resistance testing system 9; the resistance testing system 9 can detect whether the resistance of the snap-action thermostat A is qualified, and correspondingly display the test result of the snap-action thermostat A in one of the ways such as a horn, a warning light, a display screen, etc.

[0037] The above is the preferred solution of the present invention, which shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A resistance test fixture for a snap-action thermostat, characterized in that : It includes a fixture base (1). A test station (2) for positioning the side-placed snap-action thermostat (A) is provided on the top surface of the fixture base (1). Installation cavities (3) are formed on both the left and right sides of the test station (2). A pair of relatively movable insulating clamping seats (4) are elastically assembled in each installation cavity (3). A conductive clamping plate (5) is fixedly connected to each insulating clamping seat (4), and a lead wire (6) is connected to the conductive clamping plate (5). A clamping gap (501) is formed between the two opposite conductive clamping plates (5), and the clamping gap (501) is used for clamping the terminal piece (A1) of the snap-action thermostat (A).

2. The resistance test fixture for a snap-action thermostat according to claim 1, wherein: : Limiting slide bars (41) extend on both the left and right sides of the insulating clamping seat (4). Vertical sliding grooves (31) corresponding to the limiting slide bars (41) are formed on the side walls of the installation cavity (3). The width of the vertical sliding groove (31) is greater than the width of the limiting slide bar (41). A vertical sliding fit and a front-back sliding fit are formed between the vertical sliding groove (31) and the limiting slide bar (41).

3. The resistance test fixture of a snap-action thermostat according to claim 1, characterized in that : A spring positioning groove (44) is formed on the back surface of the insulating clamping seat (4). A positioning bolt (6) that screws into the fixture base (1) corresponding to the spring positioning groove (44) and extends into the installation cavity (3) from the outside is provided. A return spring (7) is sleeved on the positioning bolt (6). One end of the return spring (7) abuts against the side wall of the installation cavity (3), and the other end abuts against the spring positioning groove (44).

4. The resistance test fixture of a snap-action thermostat according to claim 1, characterized in that : Clamping plate positioning grooves (42) are formed on the opposite surfaces of the insulating clamping seat (4) along the height direction. Connecting through holes (43) are formed in the insulating clamping seat (4) corresponding to the clamping plate positioning grooves (42). Threaded holes (51) are formed in the conductive clamping plate (5) corresponding to the connecting through holes (43). The conductive clamping plate (5) is tightly assembled in the clamping plate positioning groove (42) by passing a fastening bolt through the connecting through hole (43) and the threaded hole (51).

5. The resistance test fixture of a snap-acting thermostat according to claim 1, characterized in that : One or more positioning plates (8) extending in the left-right direction are provided on the top surface of the fixture base (1). The positioning plates (8) are arranged parallel to each other. Positioning grooves (801) matching the surface curvature of the snap-action thermostat (A) are formed on the positioning plates (8). The test station (2) is jointly formed by the positioning grooves (801).

6. The resistance test fixture of a snap-action thermostat according to claim 1, characterized in that : An inclined guiding surface (502) is formed on the top of the conductive clamping plate (5) close to the opposite surface. A cut-in port (503) of the clamping gap (501) is formed between the two opposite guiding surfaces.

7. The resistance test fixture of a snap-acting thermostat according to claim 5, characterized in that : At least a part of the opposite sides of the conductive clamping plate (5) protrudes outside the positioning groove (801); the bottom surface of the conductive clamping plate (5) abuts against or is close to the bottom of the installation cavity (3), and the top of the conductive clamping plate (5) extends above the installation cavity (3), and a clamping gap (501) is formed between the extended parts.

8. A resistance test fixture for a snap-acting thermostat according to claim 1, characterized in that : A connecting structure is provided at the bottom of the fixture base (1); the connecting structure includes an internal threaded hole (11).

9. The resistance test fixture of a snap-action thermostat according to claim 1, characterized in that : The height of the insulating clamping seat (4) is adapted to the depth of the installation cavity (3); a clearance fit is formed between the insulating clamping seat (4) and the installation cavity (3) in the width direction.

10. The resistance test fixture for a snap-action thermostat according to claim 1, characterized in that : It also includes a resistance testing system (9), and the lead wires (6) on each conductive clamping plate (5) are electrically connected to the resistance testing system (9).

Images