GB2594240A

GB2594240A - Boiling point detector for brake fluid

Info

Publication number: GB2594240A
Application number: GB2005139.7A
Authority: GB
Inventors: Tseng Tien-Tsai
Original assignee: Chuan Jiing Enterprises Co Ltd
Current assignee: Chuan Jiing Enterprises Co Ltd
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2021-10-27
Anticipated expiration: 2040-04-07
Also published as: GB202005139D0; GB2594240B

Abstract

A boiling point detector for brake fluid includes a handle 11 fig. 1 and a boiling point detecting module 12. The boiling point detecting module 12 includes a base 2 coupled with a heater 23. A temperature sensor 4 is provided in a through hole 24 disposed on the base 2. The temperature sensor 4 has two metal wires 41 connected at an end as a joint 42. A positioning member 3 has a first end 31 and a second end 32. The first end 31 is firmly fixed within the through hole 24 while the second end 32 extends out of the through hole 24 to stick out of the base 2 to abut against the joint 42. The positioning member 3 is provided with two parallel first grooves 33 along a longitudinal direction for accommodating the two metal wires 41.

Description

-I -

BOILING POINT DETECTOR FOR BRAKE FLUID

[00011 The present invention relates to a temperature sensor and more particularly to a boiling point detector for brake fluid.

[0002] As shown in FIG. 4 and 5, a conventional boiling point detector for brake fluid includes a base 5 coupled with a heater 51. A through hole 52 is provided on the base 5 for accommodating a temperature sensor 6 that has two metal wires 61 connected at an end as a joint 62. When in use, the heater 51 is immersed in brake fluid to heat, hence the temperature sensor 6 finds the boiling point.

[0003] The metal wires 61 of the temperature sensor 6, however,are not positioned in the through hole 52, so it is hard to place the joint 62 exactly in a perfect position to measure temperature. The joint 62 deviates from the perfect position, incurring low measurement accuracy and damage to the device in the worst situation. The heater 51 is burned out with continuing heating since real temperature data is not fed back immediately when the heater 51 heats in the air.

[0004] The primary objective of the present invention is to provide a boiling point detector for brake fluid that positions a temperature sensor on a base to avoid deviation and to simplify the assembly of the temperature sensor.

[0005] To achieve the above objective, the present invention provides a handle and a boiling point detecting module. The boiling point detecting module includes a base coupled with a heater. A temperature sensor is provided in a through hole disposed on the base. The temperature sensor has two metal wires connected at an end as a joint. A positioning member with a first end and a second end is inserted in the through hole. The first end is firmly fixed within the through hole while the second end extends out of the through hole to stick out of the base to abut against the joint. The positioning member is -2 -provided with two parallel first grooves along a longitudinal direction for accommodating the two metal wires.

[0006] In one embodiment, a block abutting against the base may be disposed at the first end of the positioning member.

[0007] In addition, a recess connected with the first grooves may be disposed on the block.

[0008] In one embodiment, an elongated portion extending backward from the base may be disposed at the first end of the positioning member.

[0009] In one embodiment, two second grooves opposite to the first grooves may be disposed along the through hole for accommodating the metal wires.

[0010] In one embodiment, the two first grooves may be arranged on opposite sides of a first direction. The second end of the positioning member may taper to form a terminal face of the second end extending longitudinally in a second direction, the second direction being perpendicular to the first direction.

[0011] The invention will now be described in detail by way of example with reference to the drawings, in which: [0012] FIG. I_ is a perspective view of the present invention; [0013] FIG. 2 is an exploded perspective view of the present invention; [0014] FIG. 3 is a sectional view of the present invention viewing in A-A direction in FIG. I; [0015] FIG. 4 is an exploded perspective view of a conventional device and [0016] FIG. .5 is a sectional view of the conventional device; [0017] Referring to FIG. I, the boiling point detector for brake fluid according to an embodiment of the present invention includes a handle 11 with a boiling point detecting -3 -module 12. In use, the boiling point detecting module 12 is immersed in the brake fluid and then turned on, so that the boiling point of the brake fluid may be determined.

[0018] As shown in FIG. 2 and 3, the boiling point detecting module 12 includes a base 2, a positioning member 3 and a temperature sensor 4. The base 2 has a front surface 21 and a rear surface 22. The front surface 21 is provided with a heater 23. A through hole 24 penetrating from the front surface 21 to the rear surface 22 is disposed on the base 2. In this embodiment, each of two opposite sides of the through hole 24 is provided with a second groove 25 extending along the through hole 24.

[0019] The temperature sensor 4 is a thermocouple including two metal wires 41 connected at an end as a joint 42.

[0020] The positioning member 3 is in shape of a stick with a length alittle longer than the through hole 24 and is inserted in the through hole 24. Each of two opposite sides arranged in a first direction DI of the positioning member 3 is provided with a first groove 33 The first grooves 33 are opposite to the second grooves 25. The positioning member 3 has a first end 31 and a second end 32. The first end 31 is firmly fixed within the through hole 24 to fasten the positioning member 3. The second end 32 tapers to form a terminal face extending longitudinally in a second direction D2 that is perpendicular to the first direction DL The second end 32 extends out of the through hole 24 and sticks out of the front surface 21 of the base 2.

[0021] A block 34 is disposed at the first end 31 of the positioning member 3. The position of the positioning member 3 is clearly defined by the block 34 abutting against the rear surface 22 of the base 2 when inserting the positioning member 3 into the through hole 24. In this embodiment, each of two sides of the block 34 is provided with a recess 35 connected with the first grooves 33. In addition, the first end 31 of the positioning member 3 elongates an elongated portion 36 extending backward from the base 2 for easy hold. The first grooves 33 are also distributed over the elongated portion 36.

[0022] The temperature sensor 4 is inserted into the through hole 24. As shown in FIG. 3, two metal wires 41 are placed around the positioning member 3 and are accommodated in the first grooves 33, the second grooves 25 and the recesses 25. The second end 32 abuts against the joint 42 and pushes the joint 42 to a working position due to the length of the positioning member 3. The length of the positioning member 3 is well designed so as to push the joint 42 to a working position that measures temperature accurately.

[0023] Benefiting from the positioning member 3 being inserted into the through hole 24 and being fixed to the base 2 to firmly abut against the temperature sensor 4, the two metal wires 41 stay still in the narrow first grooves 33 and second grooves 25 even when suffering shaking, vibrating or hitting. Therefore, the joint 42 is ensured from deviating the working position to measure temperature accurately. The present invention can also protect the heater 23 from damage by continuing heating since real temperature data is not fed back immediately due to bad measurement when the heater 51 heats in the air.

Claims

CLAIMSI. A boiling point detector for brake fluid having a handle with a boiling point detecting module including a base coupled with a heater, the base being provided with a temperature sensor disposed in a through hole, wherein the temperature sensor has two metal wires connected at an end as a joint, characterized by comprising: a positioning member with a first end of two ends firmly fixed within the through hole and a second end of the two ends extending out of the through hole to stick out of the base to abut against the joint, the positioning member being provided with two parallel first grooves along a longitudinal direction for accommodating the two metal wires.
2. The boiling point detector for brake fluid of claim 1, wherein a block abutting against the base is disposed at the first end of the positioning member.
3. The boiling point detector for brake fluid of either one of claims 1 and 2, wherein a recess connected with the first grooves is disposed on the block.
4. The boiling point detector for brake fluid of any preceding claim, wherein an elongated portion extending backward from the base is disposed at the first end of the positioning member.
5. The boiling point detector for brake fluid of any preceding claim, wherein two second grooves opposite to the first grooves are disposed along the through hole for accommodating the metal wires.
6. The boiling point detector for brake fluid of any preceding claim, wherein the two first grooves are arranged on opposite sides of a first direction; the second end of the positioning member tapers to form a terminal face of the second end extending longitudinally in a second direction, the second direction being perpendicular to the first direction.