Measuring tool

Abstract

The utility model discloses a measuring tool comprising a shaft rod, one end of the shaft rod is provided with a first detection head, and the shaft rod is also provided with an indication part; the sleeve rod sleeves the shaft rod in a sliding manner, the sleeve rod is provided with a strip-shaped hole formed in the axial direction of the sleeve rod, the sleeve rod is provided with scale marks on at least one side of the strip-shaped hole, and the indicating part extends into the strip-shaped hole; the clamp is installed on the sleeve rod, a notch is formed in the clamp, a second detection head corresponding to the first detection head is arranged on one side of the notch, the first detection head and the second detection head are used for making contact with the two opposite surfaces of an object to be detected respectively, and the numerical value of the scale mark pointed by the indication part is the distance between the first detection head and the second detection head; and the elastic piece is arranged between the shaft rod and the sleeve rod and is used for enabling the second detection head to have a movement trend far away from the first detection head. According to the application, the clamp can be clamped into the brake disc to measure the thickness under the condition that a tire is not detached.

Description

Technical Field

[0001] The utility model relates to the field of measuring tools, and particularly to a measuring tool. Background Art

[0002] The thickness standards of brake discs are divided into the front part and the rear part. Generally, the thickness standard of the front brake disc is about 32 mm, and the thickness standard of the rear brake disc is about 28 mm.

[0003] With the braking operation of the vehicle during use, the thickness of the brake disc will be worn to some extent. Generally, the wear limit thickness of the front brake disc is about 29 mm, and the wear limit thickness of the rear brake disc is about 25 mm. If the thickness of the brake disc is lower than these standards, it may be clamped and broken due to braking, affecting driving safety. Therefore, it is very important to keep the thickness of the brake disc within the standard range. In the prior art, it is very difficult to measure the thickness of the brake disc without removing the tire. Summary of the Utility Model

[0004] The utility model aims at the above problems and provides a measuring tool.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A measuring tool, comprising:

[0007] A shaft rod, one end of the shaft rod has a first detection head, and the shaft rod also has an indicating part;

[0008] A sleeve rod, which is slidably sleeved on the shaft rod. The sleeve rod has a strip-shaped hole arranged along the axial direction of the sleeve rod. The sleeve rod has scale marks on at least one side of the strip-shaped hole, and the indicating part extends into the strip-shaped hole;

[0009] A clamp, which is installed on the sleeve rod. The clamp forms a notch, and one side of the notch has a second detection head corresponding to the first detection head. The first detection head and the second detection head are used to respectively contact two opposite surfaces of the object to be detected, and the value of the scale mark pointed to by the indicating part is the distance between the first detection head and the second detection head;

[0010] An elastic member, which is arranged between the shaft rod and the sleeve rod and is used to make the second detection head have a tendency to move away from the first detection head.

[0011] In the initial state of this application, due to the action of the elastic member, the first detection head and the second detection head are away from each other. And due to the setting of the fixture notch, it is possible to clamp the fixture onto the brake disc without removing the tire. Then, by moving the sleeve rod, the first detection head and the second detection head are brought closer to each other. When the first detection head and the second detection head respectively contact two opposite surfaces of the brake disc, the value corresponding to the indicating portion is the thickness of the brake disc.

[0012] During actual use, by moving the measuring tool, the thickness of multiple areas can be measured, and the flatness of the brake disc can be measured.

[0013] During actual use, the measuring tool of this application is not limited to measuring the thickness of the brake disc, and can also measure the thickness of other objects. When used for the brake disc, the measuring range can be 0 - 35 mm.

[0014] The fixture of this application being installed on the sleeve rod includes the case where the two are integrated.

[0015] In one embodiment of the present utility model, it further includes a reading positioning member slidably arranged on the sleeve rod. The reading positioning member has a reading mark that cooperates with the scale mark. The reading positioning member has a slider extending into the strip-shaped hole. When the reading positioning member is moved so that the slider contacts the indicating portion, the axis of the indicating portion corresponds to the reading mark, and the value pointed to by the reading mark on the scale mark is the same as the value pointed to by the indicating portion on the scale mark.

[0016] The slider is located between the first detection head and the indicating portion.

[0017] Setting the reading positioning member can fix the reading position, facilitating reading after the measuring tool is taken out. The slider being located between the first detection head and the indicating portion can ensure that after the sleeve rod and the shaft rod are loosened and under the action of the elastic member, during the relative movement and reset process of the sleeve rod and the shaft rod, the indicating portion will not drive the reading positioning member to move.

[0018] In one embodiment of the present utility model, the fixture is U-shaped. The fixture has two side portions and an intermediate portion connecting the two side portions. The intermediate portion and the two side portions form the notch. One of the side portions is installed on the sleeve rod, and the second detection head is provided on the other side portion.

[0019] The axes of the first detection head and the second detection head coincide.

[0020] In one embodiment of the present utility model, the side portion of the fixture cooperating with the sleeve rod is sleeved on the sleeve rod, and the side portion and the sleeve rod are fixed by fasteners or pins.

[0021] In one embodiment of the present utility model, one end of the shaft rod away from the first detection head has a first handle, and one end of the sleeve rod away from the second detection head has a second handle. When the first handle is pressed towards the second handle, the sleeve rod and the fixture move relative to the shaft rod, and the second detection head approaches the first detection head.

[0022] In one embodiment of the present utility model, it further includes a hollow sliding screw sleeved on the shaft rod. The sleeve rod is screwed and fixed on the sliding screw. The first handle is sleeved on the sleeve rod and fixed to the sleeve rod through a fastener or a pin shaft.

[0023] In one embodiment of the present utility model, the elastic member is a compression spring. A limiting member is installed on the shaft rod. The elastic member is sleeved on the shaft rod, with one end in contact and cooperation with the limiting member and the other end in contact and cooperation with the sleeve rod.

[0024] In one embodiment of the present utility model, the limiting member is a pin shaft inserted on the shaft rod.

[0025] In one embodiment of the present utility model, it further includes a nut;

[0026] The end of the sleeve rod has a threaded hole. The first detection head is screwed on the threaded hole. The nut is screwed on the first detection head and is in contact and cooperation with the sleeve rod.

[0027] In one embodiment of the present utility model, it further includes a sealing ring;

[0028] One end of the shaft rod near the first detection head has an annular groove. The sealing ring is installed in the annular groove. The sleeve rod is in sliding and sealing cooperation with the shaft rod through the sealing ring.

[0029] The beneficial effect of the present utility model is that: in the initial state of the present application, due to the action of the elastic member, the first detection head and the second detection head are far away from each other. And due to the setting of the concave opening of the fixture, it can be realized that without disassembling the tire, the fixture can be clamped on the brake disc, and then by moving the sleeve rod, the first detection head and the second detection head are close to each other. When the first detection head and the second detection head are respectively in contact with two opposite surfaces of the brake disc, the value corresponding to the indicating part is the thickness of the brake disc. Description of the Drawings

[0030] Figure 1 is a schematic diagram of the measuring tool;

[0031] Figure 2 is the front view of the measuring tool;

[0032] Figure 3 is Figure 2 the A-A sectional view of

[0033] Figure 4 It is the left view of the measuring tool;

[0034] Figure 5 It is Figure 4 the B-B sectional view of;

[0035] Figure 6 It is the exploded view of the measuring tool;

[0036] Figure 7 It is another exploded view of the measuring tool.

[0037] The reference numerals in the figure are as follows:

[0038] 1. Shaft rod; 11. First detection head; 12. Indication part; 13. Annular groove; 14. Sealing ring; 15. Limiting part; 16. Threaded hole; 2. Sleeve rod; 21. Strip-shaped hole; 22. Scale mark; 3. Fixture; 31. Side part; 32. Middle part; 33. Notch; 34. Second detection head; 4. Elastic part; 5. Reading positioning part; 51. Slide block; 52. Reading mark; 6. First handle; 7. Second handle; 8. Sliding screw; 9. Nut. Specific embodiments

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. Usually, the components of the embodiments of this application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0040] In the description of this application, it should be noted that the orientation or positional relationship indicated by terms such as "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to this application. In addition, terms such as "first" and "second" are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0041] In the description of this application, it should also be noted that unless otherwise clearly specified and limited, the terms "set" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] The following will describe the present utility model in detail in conjunction with the accompanying drawings.

[0043] As Figures 1 to 7 shown, a measuring tool includes:

[0044] A shaft rod 1, one end of the shaft rod 1 has a first detection head 11, and the shaft rod 1 also has an indicating portion 12;

[0045] A sleeve rod 2, which is slidably sleeved on the shaft rod 1. The sleeve rod 2 has a strip-shaped hole 21 arranged along the axial direction of the sleeve rod 2. The sleeve rod 2 has scale markings 22 on at least one side of the strip-shaped hole 21, and the indicating portion 12 extends into the strip-shaped hole 21;

[0046] A fixture 3, which is installed on the sleeve rod 2. The fixture 3 forms a notch 33. One side of the notch 33 has a second detection head 34 corresponding to the first detection head 11. The first detection head 11 and the second detection head 34 are used to contact two opposite surfaces of the object to be detected respectively. The value of the scale marking 22 pointed to by the indicating portion 12 is the distance between the first detection head 11 and the second detection head 34;

[0047] An elastic member 4, which is arranged between the shaft rod 1 and the sleeve rod 2 and is used to make the second detection head 34 have a movement tendency away from the first detection head 11.

[0048] In the initial state of the present application, due to the action of the elastic member 4, the first detection head 11 and the second detection head 34 are far away from each other. And due to the setting of the notch 33 of the fixture 3, the fixture 3 can be clamped onto the brake disc without disassembling the tire. Then, by moving the sleeve rod 2, the first detection head 11 and the second detection head 34 are made to approach each other. When the first detection head 11 and the second detection head 34 respectively contact two opposite surfaces of the brake disc, the value corresponding to the indicating portion 12 is the thickness of the brake disc.

[0049] In actual use, by moving the measuring tool, the thickness of multiple areas can be measured, and the flatness of the brake disc can be measured.

[0050] In actual use, the measuring tool of the present application is not limited to measuring the thickness of the brake disc, and can also measure the thickness of other objects. When used for the brake disc, the measuring range can be 0 - 35 mm.

[0051] The installation of the fixture 3 of the present application on the sleeve rod 2 includes the case where the two are an integral part.

[0052] As Figure 1 and 3As shown in the figure, in this embodiment, it further includes a reading positioning member 5 slidably arranged on the sleeve rod 2. The reading positioning member 5 has a reading mark 52 that cooperates with the scale mark 22. The reading positioning member 5 has a slider 51 extending into the strip-shaped hole 21. When the reading positioning member 5 is moved so that the slider 51 contacts the indicating portion 12, the axis of the indicating portion 12 corresponds to the reading mark 52, and the value indicated by the reading mark 52 pointing to the scale mark 22 is the same as the value indicated by the indicating portion 12 pointing to the scale mark 22;

[0053] The slider 51 is located between the first detection head 11 and the indicating portion 12.

[0054] Setting the reading positioning member 5 can fix the reading position, facilitating reading after the measuring tool is taken out. The slider 51 is located between the first detection head 11 and the indicating portion 12, enabling the indicating portion 12 not to drive the reading positioning member 5 to move during the relative movement and resetting of the sleeve rod 2 and the shaft rod 1 under the action of the elastic member 4 after the sleeve rod 2 and the shaft rod 1 are released.

[0055] As Figure 1 and 5 shown, in this embodiment, the fixture 3 is U-shaped. The fixture 3 has two side portions 31 and an intermediate portion 32 connecting the two side portions 31. The intermediate portion 32 and the two side portions 31 form a notch 33. One of the side portions 31 is mounted on the sleeve rod 2, and the other side portion 31 has a second detection head 34;

[0056] The axes of the first detection head 11 and the second detection head 34 coincide.

[0057] In this embodiment, the side portion 31 of the fixture 3 that cooperates with the sleeve rod 2 is sleeved on the sleeve rod 2, and the side portion 31 and the sleeve rod 2 are fixed by fasteners or pins.

[0058] As Figure 1 , 6 and 7 shown, in this embodiment, one end of the shaft rod 1 away from the first detection head 11 has a first handle 6, and one end of the sleeve rod 2 away from the second detection head 34 has a second handle 7. When the first handle 6 is pressed towards the second handle 7, the sleeve rod 2 and the fixture 3 move relative to the shaft rod 1, and the second detection head 34 approaches the first detection head 11.

[0059] As Figure 3 , 5 and 6 shown, in this embodiment, it further includes a hollow sliding screw 8 slidably sleeved on the shaft rod 1. The sleeve rod 2 is screwed and fixed on the sliding screw 8. The first handle 6 is sleeved on the sleeve rod 2 and is fixed to the sleeve rod 2 by fasteners or pins.

[0060] There is a gap between the sleeve rod 2 and the shaft rod 1, and the sliding screw 8 is used to achieve the sliding fit between the shaft rod 1 and the sleeve rod 2.

[0061] As Figure 3 、 6 and shown in FIG. 7, in this embodiment, the elastic member 4 is a compression spring. A limiting member 15 is installed on the shaft rod 1. The elastic member 4 is sleeved on the shaft rod 1, one end is in contact and cooperation with the limiting member 15, and the other end is in contact and cooperation with the sleeve rod 2.

[0062] In this embodiment, the limiting member 15 is a pin shaft inserted on the shaft rod 1.

[0063] As Figure 1 、 5 、FIG. 6 and FIG. 7 show, in this embodiment, a nut 9 is further included;

[0064] The end of the sleeve rod 2 has a threaded hole 16. The first detection head 11 is screwed on the threaded hole 16. The nut 9 is screwed on the first detection head 11 and is in contact and cooperation with the sleeve rod 2.

[0065] By providing the nut 9, the first detection head 11 can be locked to prevent the first detection head 11 from loosening.

[0066] In this embodiment, a sealing ring 14 is further included;

[0067] One end of the shaft rod 1 close to the first detection head 11 has an annular groove 13. The sealing ring 14 is installed in the annular groove 13. The sleeve rod 2 is in sliding and sealing cooperation with the shaft rod 1 through the sealing ring 14.

[0068] The above are only the preferred embodiments of the present invention, and thus do not limit the patent protection scope of the present invention. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention, directly or indirectly applied to other related technical fields, shall be included in the protection scope of the present invention by the same token.

Claims

1. A measuring tool, characterized in that: include: A shaft rod, one end of which is provided with a first detection head, and the shaft rod is also provided with an indication portion; A sleeve rod, a sliding sleeve is sleeved on the shaft rod, the sleeve rod has a strip hole arranged along the axial direction of the sleeve rod, the sleeve rod has a scale mark on at least one side of the strip hole, and the indicator part extends into the strip hole; A fixture is mounted on the sleeve rod, the fixture is formed with a notch, one side of the notch has a second detection head corresponding to the first detection head, the first detection head and the second detection head are used to contact two opposite surfaces of the object to be detected, respectively, and the value of the scale mark pointed to by the indicator is the distance between the first detection head and the second detection head; The elastic member is arranged between the shaft rod and the sleeve rod, and is used to make the second detection head have a movement tendency away from the first detection head.

2. The measuring tool according to claim 1, characterized in that It also includes a reading positioning member slidably arranged on the sleeve rod, the reading positioning member has a reading mark matched with the scale mark, the reading positioning member has a slider extending into the bar-shaped hole, when the reading positioning member is moved to make the slider contact with the indicating part, the axis of the indicating part corresponds to the reading mark, and the value of the scale mark pointed to by the reading mark is the same as the value of the scale mark pointed to by the indicating part; The sliding block is located between the first detection head and the indicating portion.

3. The measuring tool according to claim 1, characterized in that: The fixture is U-shaped, and has two side parts and a middle part connecting the two side parts, the middle part and the two side parts form the notch, one of the side parts is mounted on the sleeve rod, and the other side part has the second detection head; The axis of the first detection head coincides with the axis of the second detection head.

4. The measuring tool according to claim 3, characterized in that: The side portion of the clamp that cooperates with the sleeve rod is sleeved on the sleeve rod, and the side portion and the sleeve rod are fixed by fasteners or pins.

5. The measuring tool according to claim 1, characterized in that: The end of the shaft away from the first detection head has a first handle, and the end of the sleeve rod away from the second detection head has a second handle. When the first handle is pressed toward the second handle, the sleeve rod and the clamp move relative to the shaft, and the second detection head approaches the first detection head.

6. The measuring tool according to claim 5, characterized in that It also includes a hollow sliding screw which is slidably sleeved on the shaft rod, the sleeve rod is threadedly fixed on the sliding screw, and the first handle is sleeved on the sleeve rod and fixed to the sleeve rod through a fastener or a pin.

7. The measuring tool according to claim 1, characterized in that: The elastic member is a compression spring. A limiting member is installed on the shaft rod. The elastic member is sleeved on the shaft rod, one end of the elastic member is in contact with the limiting member, and the other end is in contact with the sleeve rod.

8. The measuring tool according to claim 7, characterized in that: The limiting member is a pin shaft inserted on the shaft rod.

9. The measuring tool according to claim 1, characterized in that: Also includes nuts; The end of the sleeve rod is provided with a threaded hole, the first detection head is threadedly connected to the threaded hole, and the nut is threadedly connected to the first detection head and is in contact with and matched with the sleeve rod.

10. The measuring tool according to claim 1, characterized in that: Also includes a sealing ring; An annular groove is provided at one end of the shaft rod close to the first detection head, the sealing ring is installed on the annular groove, and the sleeve rod is slidably sealed with the shaft rod through the sealing ring.

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