Lever type inside micrometer

Abstract

The utility model discloses a lever type inside micrometer, comprising a measuring felt which is adhered to the front end of a front measuring rod and is used as a measuring surface; the tail part of the front measuring rod is provided with a hollow area which is matched with the clamping hook assembly to be connected with the front end of the rear shaft rod; the rear end of the rear shaft rod is movably connected with the lever handle; the lever handle drives the rear shaft rod to move back and forth; the rear shaft sleeve sleeves the tail part of the rear shaft rod; the spring is assembled on the outer side of the rear shaft sleeve; when the lever handle drives the rear shaft rod to move backwards, the shaft sleeve is driven to transmit power to the rear shaft sleeve, then the spring is compressed, when the lever handle is loosened, the spring rebounds, and the rear shaft rod moves forwards. In a conventional state, the handle is in an open state, the front measuring rod extends out, and in use, the handle is pressed down, and the front measuring rod retracts. The movement mode is matched with a three-jaw accessory to realize opening and closing of the jaws, so that the requirement of quickly measuring the inner diameter is met, and meanwhile, the measurement stability can be improved by holding the large-area handle.

Description

Technical Field

[0001] The utility model relates to an inside diameter micrometer, in particular to a lever-type inside diameter micrometer capable of realizing rapid measurement. Background Art

[0002] Common internal diameter micrometers are generally driven by a rotating tail sleeve. This solution is not suitable for scenarios where large quantities of parts need to be measured quickly, because the slow screw-in speed of the sleeve will result in low measurement efficiency. Utility Model Content

[0003] The utility model aims to provide a lever-type internal diameter micrometer to meet the demand for rapid measurement of internal diameters.

[0004] The technical solution of the utility model is:

[0005] Lever type internal micrometer, including:

[0006] The measuring felt is bonded to the front end of the front measuring rod and serves as the measuring surface. It is used together with the three-jaw accessory to measure the inner diameter.

[0007] The front measuring rod has a hollow area at the tail end, and the hollow area cooperates with the hook assembly to connect the front end of the rear axle rod;

[0008] The rear axle rod has a lever handle that is movably connected to the rear end;

[0009] The hook assembly includes a hook fixed to the front end of the rear axle rod, which is placed in the hollow area at the tail of the front measuring rod and plays a role of soft connection between the rear axle rod and the front measuring rod;

[0010] The lever handle drives the rear axle rod to move forward and backward;

[0011] The rear axle sleeve is sleeved on the tail of the rear axle rod;

[0012] Spring, mounted on the outside of the rear bushing;

[0013] The shaft sleeve is fixed in the middle of the rear axle rod. When the lever handle drives the rear axle rod to move backward, the power is transmitted to the rear shaft sleeve by driving the shaft sleeve, thereby compressing the spring. When the lever handle is released, the spring rebounds and the rear axle rod moves forward.

[0014] Preferably, it also includes:

[0015] The guide groove cover is covered on the middle part of the front measuring rod, and a linear guide groove is opened on the side of the guide groove cover;

[0016] The guide pin is vertically fixed on the front measuring rod and passes through the linear guide groove of the guide groove cover. The linear movement of the front measuring rod is limited by the limiting of the guide pin.

[0017] Preferably, it also includes:

[0018] The middle sleeve is sleeved on the tail of the front measuring rod, the front end of the middle sleeve is fixedly connected to the rear end of the guide groove cover, and the tail end of the middle sleeve extends to the front end of the rear shaft rod;

[0019] The connecting sleeve is simultaneously sleeved on the tail end of the front measuring rod and the front end of the rear axle rod, and moves inside the middle sleeve.

[0020] Preferably, it also includes:

[0021] The front cover of the rear axle sleeve is sleeved on the front part of the rear axle rod, and the front end is connected to the rear end of the intermediate axle sleeve;

[0022] The rear axle sleeve and rear cover are sleeved on the middle and rear part of the rear axle rod, the front end is connected to the rear end of the rear axle sleeve and the front cover is sleeved on the outside of the rear axle sleeve, the spring is assembled between the rear axle sleeve and the rear axle sleeve and the rear cover is provided with a closing opening extending toward the center at the rear end of the rear axle sleeve and the rear cover.

[0023] Preferably, it also includes:

[0024] The front shaft sleeve is sleeved on the front end of the front measuring rod and connected with the guide groove cover to control the geometric accuracy of the front measuring rod.

[0025] Preferably, it also includes:

[0026] The front sealing ring is placed between the rear end of the front sleeve and the front measuring rod to prevent dust and dirt.

[0027] Preferably, it also includes:

[0028] The buffer rubber ring is placed on the front cover of the rear axle sleeve and the rear cover of the rear axle sleeve to relieve the impact force of the spring.

[0029] Preferably, the hook assembly further comprises a screw, and the screw fixes the hook to the front end of the rear axle rod.

[0030] Preferably, the connecting sleeve and the front measuring rod, the intermediate sleeve and the guide groove cover, and the sleeve and the rear axle rod are all bonded by glue.

[0031] Preferably, the rear shaft sleeve front cover shell and the intermediate shaft sleeve are connected by threads.

[0032] The advantages of the utility model are:

[0033] The lever-type internal diameter micrometer designed by the utility model cancels the traditional screw-in feeding method and adds a lever-type pressing spring handle mechanism. Under normal conditions, the handle is in an open state and the front measuring rod is in an extended state. When in use, the handle is pressed and the front measuring rod is retracted. This movement mode can realize the opening and closing of the claws with the three-claw accessories, thereby meeting the needs of rapid measurement of the internal diameter. At the same time, the large area of ​​the handle grip can also improve the stability of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0035] Figure 1 It is a cross-sectional view of the lever-type internal diameter micrometer of the utility model;

[0036] Figure 2 It is a three-dimensional diagram of the lever-type internal diameter micrometer of the utility model;

[0037] Figure 3 is a schematic diagram of the front bushing;

[0038] Figure 4 is a schematic diagram of a guide slot cover;

[0039] Figure 5 is a schematic diagram of the front measuring rod;

[0040] Figure 6 is a schematic diagram of the intermediate sleeve;

[0041] Figure 7 is a schematic diagram of connecting the shaft sleeve;

[0042] Figure 8 is a schematic diagram of a hook assembly;

[0043] Fig. 9 is a schematic diagram of the rear axle rod;

[0044] Fig.10 is a schematic diagram of the rear bushing;

[0045] Fig.11 It is a schematic diagram of the front cover of the rear axle sleeve;

[0046] Fig.12 It is a schematic diagram of the rear cover of the rear axle sleeve;

[0047] Fig.13 It is a schematic diagram of the inside micrometer when the lever handle is in a pressed state;

[0048] Fig.14 Schematic diagram of the inside micrometer with the lever handle in the open position.

[0049] Among them: 1. measuring felt; 2. front bushing; 3. front sealing ring; 4. guide groove cover; 5. front measuring rod; 6. guide pin; 7. intermediate bushing; 8. connecting bushing; 9. hook assembly; 10. buffer rubber ring; 11. bushing; 12. rear axle rod; 13. rear bushing; 14. spring; 15. front cover of rear bushing; 16. rear cover of rear bushing; 17. lever handle. DETAILED DESCRIPTION

[0050] like Figure 1-12 As shown, the lever-type internal diameter micrometer proposed by the utility model includes the following components.

[0051] The measuring felt 1 is bonded to the front end of the front measuring rod 5 and serves as a measuring surface, and is used in conjunction with the three-jaw accessory to measure the inner diameter;

[0052] The front shaft sleeve 2 is sleeved on the front end of the front measuring rod 5 and connected to the guide groove cover 4 to control the geometric accuracy of the front measuring rod 5;

[0053] The front sealing ring 3 is placed between the rear end of the front sleeve 2 and the front measuring rod 5 to prevent dust and dirt;

[0054] The guide groove cover 4 covers the middle part of the front measuring rod 5. A linear guide groove is opened on the side of the guide groove cover 4, and the linear motion of the front measuring rod 5 is limited by the position limit of the pin 6;

[0055] The front measuring rod 5 has a hollow area at the rear end, and the hollow area cooperates with the hook assembly 9 to connect the front end of the rear axle rod 12, so that it can move together with the rear axle rod;

[0056] The guide pin 6 is vertically fixed on the front measuring rod 5 and passes through the linear guide groove of the guide groove cover 4. The linear movement of the front measuring rod 5 is limited by the position limit of the guide pin 6.

[0057] The intermediate sleeve 7 is sleeved on the tail of the front measuring rod 5. The front end of the intermediate sleeve 7 is fixedly bonded to the rear end of the guide groove cover 4 by glue. The tail end of the intermediate sleeve 7 extends to the front end of the rear shaft rod 12. The rear end is connected to the front cover of the rear sleeve of the material 15 by a thread. The material 8 is connected to the sleeve and moves inside it.

[0058] The connecting sleeve 8 is simultaneously sleeved on the rear end of the front measuring rod 5 and the front end of the rear shaft rod 12, and the connecting sleeve 8 and the front measuring rod 5 are bonded by glue;

[0059] The hook assembly 9 includes a screw and a hook. The screw fixes the hook to the front end of the rear shaft rod 12 and is placed in the hollow area at the tail of the front measuring rod 5, which plays a role of soft connection between the rear shaft rod 12 and the front measuring rod 5, similar to a universal joint. For processing, the coaxiality only needs to consider the coaxiality control of the front measuring rod assembly, and the rear shaft rod only plays a driving role, which reduces the processing difficulty and cost;

[0060] The buffer rubber ring 10 is placed on the front cover 15 of the rear sleeve and the rear cover 16 of the rear sleeve to relieve the impact force of the spring;

[0061] The shaft sleeve 11 is glued to the middle of the rear shaft rod 12. When the lever handle 17 drives the rear shaft rod 12 to move backward, the shaft sleeve 11 is driven to transmit power to the rear shaft sleeve 13, thereby compressing the spring 14. When the lever handle 17 is released, the spring 14 rebounds and the rear shaft rod 12 moves forward.

[0062] The rear axle rod 12 has a rear end movably connected to a lever handle 17, and moves forward and backward by pressing and releasing the lever handle 17;

[0063] A rear shaft sleeve 13 is sleeved on the tail of the rear shaft rod 12, and the rear shaft rod 12 moves inside the rear shaft sleeve 13;

[0064] The spring 14 is mounted on the outer side of the rear sleeve 13, and provides a rebound force to restore the handle to an open state after the handle is released;

[0065] The rear shaft sleeve front cover shell 15 is sleeved on the front part of the rear shaft rod 12, and the front end is connected to the rear end of the intermediate shaft sleeve 7 through threads.

[0066] The rear shaft sleeve rear cover 16 is sleeved on the middle and rear part of the rear shaft rod 12, the front end is connected to the rear end of the rear shaft sleeve front cover 15, and the middle part is sleeved on the outside of the rear shaft sleeve 13. The spring 14 is assembled between the rear shaft sleeve 13 and the rear shaft sleeve rear cover 16. The rear end of the rear shaft sleeve rear cover 16 is provided with a closing opening extending toward the center, which serves as a limit baffle for the spring 14;

[0067] The lever handle 17 drives the rear axle rod 12 to move forward and backward.

[0068] like Fig.13 , 14 The figures are schematic diagrams of the lever-type internal diameter micrometer of the utility model when the lever handle 17 is in the pressed and opened states. Under normal conditions, the lever handle 17 is in the opened state, and the front measuring rod is in the extended state; when used for testing, the lever handle 17 is in the pressed state, the front measuring rod 5 moves backward and retracts, and the guide pin 6 plays a limiting role; this movement mode can realize the opening and closing of the claws in conjunction with the three-claw accessory, thereby meeting the demand for rapid measurement of the internal diameter, and at the same time, the large area of ​​the handle grip can also improve the stability of the measurement.

[0069] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any modifications made according to the spirit of the main technical solution of the utility model should be included in the protection scope of the utility model.

Claims

1. Lever type internal micrometer, characterized in that: include: The measuring felt (1) is bonded to the front end of the front measuring rod (5) and serves as a measuring surface, and is used in conjunction with the three-jaw accessory to measure the inner diameter; The front measuring rod (5) has a hollow area at the rear end, and the hollow area cooperates with the hook assembly (9) to connect to the front end of the rear axle rod (12); A rear axle rod (12) having a buckle connected to the hook assembly (9) at the front end and a lever handle (17) movably connected to the rear end; A hook assembly (9), comprising a hook fixed to the front end of the rear shaft rod (12), disposed in the hollow area at the rear end of the front measuring rod (5), and serving as a flexible connection between the rear shaft rod (12) and the front measuring rod (5); A lever handle (17) drives the rear axle rod (12) to move forward and backward; A rear shaft sleeve (13) is sleeved on the tail of the rear shaft rod (12); A spring (14) is mounted on the outer side of the rear bushing (13); The shaft sleeve (11) is fixed at the middle of the rear shaft rod (12). When the lever handle (17) drives the rear shaft rod (12) to move backward, the shaft sleeve (11) is driven to transmit power to the rear shaft sleeve (13), thereby compressing the spring (14). When the lever handle (17) is released, the spring (14) rebounds and the rear shaft rod (12) moves forward.

2. The lever-type internal micrometer according to claim 1, characterized in that: Also includes: A guide groove cover (4) covers the middle of the front measuring rod (5), and a linear guide groove is formed on the side of the guide groove cover (4); The guide pin (6) is vertically fixed on the front measuring rod (5) and passes through the linear guide groove of the guide groove cover (4). The linear movement of the front measuring rod (5) is limited by the position limiting of the guide pin (6).

3. The lever-type internal micrometer according to claim 2, characterized in that: Also includes: An intermediate shaft sleeve (7) is sleeved on the rear end of the front measuring rod (5), the front end of the intermediate shaft sleeve (7) is fixedly connected to the rear end of the guide groove cover (4), and the rear end of the intermediate shaft sleeve (7) extends to the front end of the rear shaft rod (12); The connecting sleeve (8) is simultaneously sleeved on the rear end of the front measuring rod (5) and the front end of the rear shaft rod (12), and moves inside the intermediate sleeve (7).

4. The lever-type internal micrometer according to claim 3, characterized in that: Also includes: A rear shaft sleeve front cover (15) is sleeved on the front part of the rear shaft rod (12), and the front end is connected to the rear end of the intermediate shaft sleeve (7); The rear axle sleeve rear cover (16) is sleeved on the middle and rear end of the rear axle rod (12), the front end is connected to the rear end of the rear axle sleeve front cover (15), the middle part is sleeved on the outer side of the rear axle sleeve (13), the spring (14) is assembled between the rear axle sleeve (13) and the rear axle sleeve rear cover (16), and the rear end of the rear axle sleeve rear cover (16) is provided with a closing opening extending toward the center.

5. The lever-type internal micrometer according to claim 4, characterized in that: Also includes: The front shaft sleeve (2) is sleeved on the front end of the front measuring rod (5) and is connected to the guide groove cover (4) to control the geometric accuracy of the front measuring rod (5).

6. The lever-type internal micrometer according to claim 5, characterized in that: Also includes: The front sealing ring (3) is placed between the rear end of the front shaft sleeve (2) and the front measuring rod (5) to prevent dust and dirt.

7. The lever-type inside micrometer according to claim 4, characterized in that: Also includes: The buffer rubber ring (10) is disposed on the front cover shell (15) of the rear shaft sleeve and the rear cover shell (16) of the rear shaft sleeve to relieve the impact force of the spring.

8. The lever-type inside micrometer according to claim 1, characterized in that: The hook assembly (9) further comprises a screw, wherein the screw fixes the hook to the front end of the rear axle rod (12).

9. The lever-type inside micrometer according to claim 3, characterized in that: The connecting sleeve (8) and the front measuring rod (5), the intermediate sleeve (7) and the guide groove cover (4), and the sleeve (11) and the rear axle rod (12) are all bonded by glue.

10. The lever-type inside micrometer according to claim 4, characterized in that: The rear shaft sleeve front cover shell (15) and the intermediate shaft sleeve (7) are connected via threads.

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