CN211338727U

CN211338727U - Lever tool

Info

Publication number: CN211338727U
Application number: CN201921440586.8U
Authority: CN
Inventors: 孔凡; 沈厚宁; 朱忠一; 潘金平
Original assignee: Johnson Controls Air Conditioning and Refrigeration Wuxi Co Ltd; Johnson Controls Technology Co
Current assignee: Johnson Controls Air Conditioning and Refrigeration Wuxi Co Ltd; Johnson Controls Technology Co
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-08-25
Anticipated expiration: 2029-08-30

Abstract

The present application provides a lever tool, comprising: main part and regulation pole, the main part includes: an actuating portion, an operating portion and a through hole. The actuating part is formed by protruding outwards from one side of the main body; the operating part is arranged on the other side opposite to the actuating part; the through hole is arranged between the actuating part and the operating part and penetrates through the main body; one end of the adjusting rod forms a contact part, the adjusting rod can be inserted into the through hole of the main body and movably connected in the through hole along the axial direction of the through hole, so that the contact part can pass through the through hole of the main body to form a fulcrum of the lever tool; wherein the lever tool is configured to adjust a distance of the actuating portion to the fulcrum in an axial direction of the through hole by movement of the adjustment lever. The application provides a lever instrument can be applicable to multiple work piece.

Description

Lever tool

Technical Field

The application relates to a lever tool, in particular to a lever tool which can adapt to different use environments.

Background

In engineering, a lever tool is sometimes used. For example, in some configurations, the first workpiece is movably coupled to the second workpiece by a shaft above or to one side of the second workpiece so that the first workpiece contacts the second workpiece or the first workpiece is spaced from the second workpiece by a small distance. It is sometimes necessary to move the first workpiece away from the second workpiece to create an operating space between the first and second workpieces for an operator to operate or measure. One end of the lever tool is abutted against the inner side of the first workpiece, and the operator applies force to the other end of the lever tool to rotate the lever tool around the fulcrum, so that the first workpiece is pried to be separated from the upper surface of the second workpiece.

SUMMERY OF THE UTILITY MODEL

The present application relates to a lever tool, comprising:

a body, the body comprising:

an actuating portion formed to protrude outward from one side of the main body;

an operating portion provided on the other side opposite to the actuating portion;

a through hole provided between the actuating portion and the operating portion and penetrating the main body;

an adjusting lever having a contact portion formed at one end thereof, the adjusting lever being insertable into the through-hole of the main body and movably coupled in the through-hole along an axial direction of the through-hole such that the contact portion can pass through the through-hole of the main body to form a fulcrum of the lever tool;

wherein the lever tool is configured to adjust a distance of the actuating portion to the fulcrum in an axial direction of the through hole by movement of the adjustment lever.

In the lever tool as described above, the contact portion of the adjustment lever includes a spherical contact surface.

In the lever tool, the inner side of the through hole has an internal thread, the outer side of the adjusting rod has an external thread, and the adjusting rod and the main body are matched through threads to move up and down in the main body.

According to the lever tool, the adjusting rod further comprises a screw and a limiting head, the limiting head is arranged at one end of the screw, and the contact part is arranged at the other end of the screw.

The lever tool as described above, further comprising a torque wrench connected to the operation portion.

In the lever tool, the extending direction of the actuating part forms an included angle with the torque wrench.

In the lever tool as described above, the lower surface of the main body has an arc shape.

The lever tool as described above, wherein the torque wrench is an index torque wrench or a preset torque wrench.

In the lever tool as described above, the actuating portion is formed to protrude outward from a lower portion of one side of the main body, and an upper surface of the actuating portion forms a contact surface for contacting a workpiece, wherein a thickness of the actuating portion is smaller than a thickness of the main body.

As described above, the through-hole has an upper opening and a lower opening, and the distance from the contact surface to the lower opening in the axial direction of the through-hole is not more than 0.2 cm.

The lever tool is used for inserting the space between two workpieces, so that one workpiece is pried, a certain distance is formed between the two workpieces, and the lever tool is used for operation and measurement. The lever tool in this application has an adjustment lever to be able to adapt to different distances between two workpieces. Also, the lever tool in the present application has a torque wrench attached to it so that the maximum torque applied to the workpiece can be set to protect the workpiece from damage by excessive torque.

Drawings

FIG. 1 is a perspective view of a leverage tool in the present application;

FIG. 2A is a perspective view of the working portion of the lever tool of FIG. 1;

FIG. 2B is an exploded view of the working portion of the lever tool of FIG. 1;

FIG. 3A is a perspective view of the main body of the working portion of FIG. 2A;

FIG. 3B is a perspective view of the body of FIG. 3A at another angle;

FIG. 4 is a perspective view of the adjustment lever of FIG. 2A;

FIG. 5 is a side view of the torque wrench of FIG. 1;

FIG. 6A is a schematic view of the adjustment lever in the uppermost position in the main body;

FIG. 6B is a schematic view of the adjustment lever in a lowermost position in the main body;

FIG. 7A is a schematic view of a lever tool in contact with a workpiece to be pried;

fig. 7B is a schematic illustration of a lever tool prying a workpiece.

Detailed Description

Various embodiments of the present application will now be described with reference to the accompanying drawings, which form a part hereof. It should be understood that although directional terms such as "front," "rear," "upper," "lower," "left," "right," and the like may be used herein to describe various example structural portions and elements of the application, these terms are used herein for convenience of description only and are to be determined based on the example orientations shown in the drawings. Because the embodiments disclosed herein can be arranged in a variety of orientations, these directional terms are used for purposes of illustration only and are not to be construed as limiting.

Fig. 1 is a perspective view of a lever tool in the present application. As shown in fig. 1, the lever tool 100 is used to pry a workpiece. The leverage tool 100 includes a torque wrench 101 and a working portion 102. The torque wrench 101 is connected to a working portion 102, the working portion 102 being adapted to contact a workpiece, the torque wrench 101 being capable of setting a desired torque to control the torque applied to the workpiece by an operator.

Fig. 2A is a perspective view of the working portion 102 of the lever tool in fig. 1, and fig. 2B is an exploded view of the working portion 102 of the lever tool in fig. 1, for illustrating the structure of the working portion 102. As shown in fig. 2A, the working portion 102 includes a main body 201 and an adjustment lever 202. Wherein the main body 201 has a through hole 205, the adjustment lever 202 is insertable into the through hole 205 and is movable relative to said main body 201 along an axial direction of the through hole 205. The lower end of the adjustment lever 202 forms the fulcrum of the lever tool 100.

Fig. 3A is a perspective view of the main body 201 of the working part 102 in fig. 2A, and fig. 3B is a perspective view of another angle of the main body 201 in fig. 3A, for illustrating the structure of the main body 201. As shown in fig. 3A and 3B, the body 201 has a length direction L and a width direction W. The main body 201 includes an adjustment block 304, an actuation portion 305, and an operation portion 306. The actuating portion 305 and the operating portion 306 are connected to both ends of the adjusting block 304 in the longitudinal direction L, respectively. In one embodiment, the adjustment block 304, the actuation portion 305, and the operating portion 306 are integrally formed. In another embodiment, the adjustment block 304, the actuation portion 305, and the operating portion 306 may be connected by welding or other connection means. The adjustment block 304 has an upper adjustment block surface 321 and a lower adjustment block surface 322, and a distance (e.g., 1cm-4cm) is provided between the upper adjustment block surface 321 and the lower adjustment block surface 322, so that the adjustment block has a certain thickness.

The actuating portion 305 is formed to protrude outward from the front side of the main body 201, that is, the actuating portion 305 protrudes from the front side surface 341 of the adjusting block 304. The width of the actuator 305 is the same as the width of the adjustment block 304 in the width direction W of the main body 201. The actuating portion 305 is connected to the lower portion of the adjusting block 304. The lower surface 313 of the actuator 305 and the lower surface 322 of the adjustment block 304 form a continuous transition surface, and the upper surface 314 of the actuator 305 is lower than the upper surface 321 of the adjustment block, i.e., the thickness of the actuator 305 is smaller than the thickness of the adjustment block 304. In one embodiment of the present application, the thickness of the actuation portion 305 is no greater than 0.2 mm. In other embodiments, the thickness of the actuation portion 305 is no greater than 0.5mm, or no greater than 1 cm. The operating portion 306 protrudes from the rear side surface 342 of the adjustment block 304, so that the operating portion 306 can be inserted into a corresponding portion of the torque wrench 101 and fixedly attached thereto by welding or riveting. In other embodiments, the operation portion 306 may be designed according to the shape of the corresponding portion of the torque wrench to be connected, as long as the main body 201 can be fixedly connected to the torque wrench.

The through-hole 205 penetrates the upper surface 321 and the lower surface 322 of the body 201, thereby forming an upper opening 318 on the upper surface 321 and a lower opening 319 on the lower surface 322. The through hole 205 is located between the actuating portion 305 and the operating portion 306. The inner side wall of the through hole 205 has an internal thread for engaging with the thread on the adjustment lever.

Fig. 4 is a perspective view of the adjustment lever of fig. 2A, showing the structure of the adjustment lever 202. As shown in fig. 4, the adjusting lever 202 includes a limiting head 412, a screw 411 and a contact portion 402, wherein the screw 411 is substantially cylindrical, and the limiting head 412 and the contact portion 402 are respectively connected to both ends of the screw 411. In the present application, the adjustment rod 202 is integrally formed, and in other embodiments, the position-limiting head 412, the screw 411 and the contact portion 402 may be connected by welding or other connection means. The outer side of the screw 411 has an external thread for engaging with the internal thread of the through hole 205. The adjustment rod 202 is inserted into the through-hole 205 from the upper opening 318 and can pass through the lower opening 319. The adjustment lever 202 can move up and down with respect to the main body 201 by engagement between the through hole 205 and the thread of the adjustment lever 202. The diameter of the check head 412 is larger than that of the screw 411, so that when the adjustment lever 202 is rotated to move downward with respect to the main body 201, the check head 412 can be blocked by the adjustment block upper surface 321, so that the check head 412 cannot pass through the through-hole 205. The spacing head 412 is hexagonal prism shaped to facilitate engagement with a tool. In other embodiments, the spacing head 412 may have other shapes. The contact portion 402 is used to form a fulcrum of the leverage tool, and the outer surface of the contact portion 402 is spherical to accommodate different angles.

Fig. 5 is a side view of the torque wrench of fig. 1, wherein the adjustment block 304 is an arc with a center above the adjustment block, i.e., the two ends of the adjustment block 304 are tilted upward, respectively, as viewed from the angle shown in fig. 5. Thus, both the upper surface 312 and the lower surface 322 are curved surfaces, and the lower surface of the actuator 305 forms a continuous transition curved surface with the lower surface 322 of the adjustment block 304. The central axis of the through-hole 205 passes through the centers of the upper surface 312 and the lower surface 322. When the central axis of the through hole of the leverage tool 100 is placed perpendicular to the horizontal plane, the lower opening 319 of the through hole 205 is the lowest bottom of the body 201. The adjustment lever 202 passes through the through-hole 205 and beyond the lower opening 319 so that the adjustment lever 202 contact 402 can form a fulcrum. The actuating portion 305 and the operating portion 306 are each spaced from the lower opening 319 to facilitate rotation of the lever about the fulcrum. The torque wrench 101 is connected to the operating portion 306, and the torque wrench 101 forms an angle with the extending direction of the actuating portion 305. The torque wrench is a commercially available wrench capable of setting torque, and includes a commonly used indicating torque wrench or a preset torque wrench in terms of use. The indicating torque wrench can display the applied torque value during use, and an operator can adjust operation according to the displayed torque value. The preset torque wrench can set a maximum torque value before use, and when the torque applied by the operator is greater than the set maximum torque value, the torque wrench can not increase the torque applied to the workpiece any more even if the operator continues to increase the force applied to the torque wrench. The use of a lever tool with a torque wrench can avoid damage to the workpiece from excessive torque.

Fig. 6A is a schematic view of the adjustment lever 202 at the highest position in the main body 201, and fig. 6B is a schematic view of the adjustment lever 202 at the lowest position in the main body 201. As shown in fig. 6A and 6B, the adjustment lever 202 is screwed into the through hole 205, and the adjustment lever 202 is rotated to move relative to the main body 201. When the adjustment lever is in the uppermost position as shown in fig. 6A, the contact portion 402 just exceeds the lower opening 319 so that the contact portion 402 can form a fulcrum, at which time the distance between the actuating portion 305 and the contact portion 402 in the axial direction of the adjustment lever 202 is small, which is suitable for levering two workpieces that are closely spaced. When the adjustment lever is in the uppermost position as shown in fig. 6B, the stopper head 412 of the adjustment lever 202 abuts against the main body 201, so that the adjustment lever 202 cannot move downward with respect to the main body 201 any more. At this time, the distance between the actuating portion 305 and the contact portion 402 is large in the axial direction of the adjustment lever 202, which is suitable for prying two workpieces that are spaced far apart.

Fig. 7A and 7B are schematic views of an application of the lever tool of the present application, fig. 7A being a schematic view of the lever tool in contact with a first workpiece to be pried, and fig. 7B being a schematic view of the lever tool prying up the first workpiece. As shown in fig. 7A and 7B, a first workpiece 701 and a second workpiece 702 are connected by a shaft 703, and the first workpiece 701 and the second workpiece 702 are supported by a support 707, thereby forming a certain space 720. The first workpiece 701 is movable along the axis over a range, typically with the first workpiece 701 in contact with the support 707 so that the first workpiece 701 is at a closest position relative to the second workpiece 702. It is sometimes necessary to distance the first workpiece 701 from the second workpiece 702 for operation or measurement, and the first workpiece 701 may be pried using the leverage tool 100 of the present application. The first workpiece 701 is blocked by the stopper 750 and cannot fall off the shaft 703, and an excessive moment may cause deformation or damage to the first workpiece 701 or the stopper 750 during the levering of the first workpiece 701 by the lever tool 100.

When the first workpiece is to be pried up, the adjusting lever 202 is rotated according to the distance between the first workpiece 701 and the second workpiece 702, so that the fulcrum has a suitable distance from the actuating portion 305, the maximum torque value of the torque wrench 101 is set, and then as shown in fig. 7A, the actuating portion 305 is placed below the first workpiece, and the contact portion 402 of the adjusting lever 202 is brought into contact with the upper surface of the second workpiece 702, so that the contact point of the contact portion 402 and the second workpiece 702 forms the fulcrum 715 to rotate. The operator grasps the handle 710 at the distal end of the torque wrench 101 and presses the torque wrench downward, which rotates the leverage tool 100 about the fulcrum 715 such that the actuating portion 305 pushes the first workpiece 701 upward. The actuator 305 will not be able to move upward until the maximum torque value of the torque wrench 101 is reached. The first workpiece 701 reaches the farthest position, which is a position where the structure of the first workpiece 701 and the structure of the second workpiece 702 are not adversely affected while facilitating the operation or measurement, and the maximum torque value of the torque wrench 101 is set according to the torque required for the first workpiece 701 to reach the farthest position. In practical use, the smaller torque value can be set first, and the torque value is gradually increased to the proper maximum torque value.

As shown in fig. 7B, the first workpiece 701 reaches the farthest position, so that the distance between the first workpiece 701 and the second workpiece 702 becomes large, thereby facilitating the operation and measurement by the operator. In the position shown in fig. 7B, the set maximum torque of the torque wrench 101 ensures that the acting force between the first workpiece 701 and the limiting member 750 does not exceed a specific value, and thus the first workpiece 701 and the limiting member 750 are not damaged.

While only certain features of the application have been illustrated and described herein, many modifications and changes will occur to those skilled in the art. It is, therefore, to be understood that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the application.

Claims

1. A leverage tool, characterized in that the leverage tool comprises:

a body (201), the body (201) comprising:

an actuating portion (305), the actuating portion (305) being formed to protrude outward from one side of the main body (201);

an operating portion (306) provided on the other side opposite to the actuating portion (305);

a through hole (205), the through hole (205) being disposed between the actuation portion (305) and the operation portion (306) and penetrating the main body (201);

an adjusting lever (202) having one end forming a contact portion (402), the adjusting lever (202) being insertable into the through-hole (205) of the main body (201) and movably connected in the through-hole (205) along an axial direction of the through-hole (205) such that the contact portion (402) can pass through the through-hole (205) of the main body (201) to form a fulcrum of the lever tool;

wherein the lever tool is configured to adjust a distance of the actuating portion (305) to the fulcrum in an axial direction of the through hole (205) by a movement of the adjustment lever (202).

2. A lever tool as defined in claim 1, wherein:

the contact portion of the adjustment lever (202) comprises a spherical contact surface.

3. A lever tool as defined in claim 1, wherein:

the inner side of the through hole (205) is provided with internal threads, the outer side of the adjusting rod (202) is provided with external threads, and the adjusting rod (202) and the main body (201) are matched through threads to move up and down in the main body (201).

4. A lever tool as defined in claim 3, wherein:

the adjusting rod (202) further comprises a screw rod (411) and a limiting head part (412), the limiting head part (412) is arranged at one end of the screw rod (411), and the contact part (402) is arranged at the other end of the screw rod (411).

5. A lever tool as defined in claim 1, wherein:

the lever tool further comprises a torque wrench (101), the torque wrench (101) being connected to the operating portion (306).

6. A lever tool as set forth in claim 5 wherein:

the direction of extension of the actuating portion (305) forms an angle with the torque wrench.

7. A lever tool as set forth in claim 5 wherein:

the lower surface (322) of the main body (201) is arc-shaped.

8. A lever tool as set forth in claim 5 wherein:

the torque wrench is an indicating value type torque wrench or a preset type torque wrench.

9. A lever tool as defined in claim 1, wherein:

the actuating part (305) is formed to protrude outwards from the lower part of one side of the main body (201), the upper surface of the actuating part (305) forms a contact surface for contacting with a workpiece, wherein the thickness of the actuating part (305) is smaller than that of the main body (201).

10. A lever tool as defined in claim 9, wherein:

the through-hole (205) has an upper opening (318) and a lower opening (319), the contact surface being at a distance of not more than 0.2cm from the lower opening (319) in the axial direction of the through-hole (205).