Mechanical jack with length-adjustable handle

Abstract

The utility model discloses a mechanical jack with a length-adjustable handle. The mechanical jack comprises a mechanical jack main body, a connecting rod is rotatably installed on the side face of the mechanical jack body, a rotating sleeve is rotatably installed at one end of the connecting rod, an adjusting mechanism is arranged at one end of the rotating sleeve and comprises a sleeve installed on the side face of the rotating sleeve, and a sliding cylinder is slidably installed in the sleeve. Through the arrangement of the sliding cylinder, the penetrating hole and the like, when the length of the sleeve needs to be adjusted, two clamping columns protruding out of the side face of the sleeve are pressed, one ends of the clamping columns slide into the penetrating hole, a second spring drives two sliding pieces to move under limiting of a limiting block, the second spring is squeezed, and a handle is pulled to drive the sliding cylinder to slide; the sliding cylinder is adjusted to a proper position, at the moment, the second spring rebounds to adjust the clamping column to be clamped into the penetrating hole again, the position of the sliding cylinder is fixed, the length of the sleeve is increased, an operator can better take advantage of force, and the applicability of the mechanical jack body is improved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical jack technology, specifically a mechanical jack with an adjustable handle length. Background Technology

[0002] Mechanical jacks are tools commonly used for lifting heavy objects. They are widely used in automobile repair, construction, and other situations requiring temporary support. Their basic working principle is to use levers, screws, or hydraulic principles to convert a small applied force into a large lifting force, thereby enabling the lifting of heavy objects. They can easily handle high-intensity work demands, ensuring the safety and efficiency of repair and handling processes.

[0003] Existing mechanical jacks typically use a fixed bolt to connect to a sleeve, which then directly connects to the rotating parts to lift the support end. The handle length is usually fixed, requiring operators to apply more force to turn the handle when lifting larger equipment. The fixed handle length prevents the lever arm from being adjusted, hindering efficient force reduction and limiting the jack's applicability. Therefore, a mechanical jack with an adjustable handle length is needed to meet these needs. Utility Model Content

[0004] The purpose of this invention is to provide a mechanical jack with an adjustable handle length to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mechanical jack with an adjustable handle length, comprising a mechanical jack body; a connecting rod is rotatably mounted on the side of the mechanical jack body, a rotating sleeve is rotatably mounted on one end of the connecting rod, and an adjustment mechanism is provided at one end of the rotating sleeve;

[0006] Preferably, the adjusting mechanism includes a sleeve installed on the side of the rotating sleeve, a slide cylinder slidably installed inside the sleeve, multiple through holes on the sides of both the sleeve and the slide cylinder, a fixing block installed inside the slide cylinder, a limit groove formed at one end of the fixing block, symmetrical limit blocks installed in the limit groove, a sliding piece installed at one end of the limit block, a snap-fit ​​post installed at one end of the sliding piece, the snap-fit ​​post being adapted to the through hole, and a second spring installed between the two sliding pieces.

[0007] Preferably, one end of the main body of the mechanical jack is provided with a sliding groove, a connecting block is installed at one end of the sliding groove, and a plurality of balls are rotatably installed at one end of the connecting block.

[0008] Preferably, a first bevel gear is installed at one end of the connecting block, and a second bevel gear adapted to the first bevel gear is installed at one end of the connecting rod.

[0009] Preferably, a threaded rod is installed at one end of the first bevel gear, and a top post is threadedly connected to the side of the threaded rod.

[0010] Preferably, a handle is installed at one end of the slide cylinder, and a movable sleeve is installed at one end of the rotating sleeve.

[0011] Preferably, a first spring is installed on the inner wall of the movable sleeve, a pin is installed at the other end of the first spring, and a shaped block is installed at one end of the pin.

[0012] Preferably, one end of the connecting rod is equipped with a plurality of toothed blocks, and the irregularly shaped blocks are adapted to the toothed blocks.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) By setting up a sliding cylinder and a through hole, when it is necessary to adjust the length of the sleeve, by pressing the two snap-fit ​​pins protruding from the side of the sleeve, one end of the snap-fit ​​pin slides into the through hole. The second spring drives the two sliding pieces to move under the limit of the limiting block. The second spring is squeezed, and the handle is pulled to drive the sliding cylinder to slide and adjust the sliding cylinder to a suitable position. At this time, the second spring rebounds and adjusts the snap-fit ​​pin to re-enter the through hole, fixing the position of the sliding cylinder, increasing the length of the sleeve, making it easier for the operator to use force, and improving the applicability of the main body of the mechanical jack.

[0015] (2) By setting up a movable sleeve and a toothed block, when the rotating sleeve drives the rotating sleeve to rotate, the irregular block inside the movable sleeve abuts against one end of the toothed block, causing the toothed block to rotate, which in turn drives the connecting rod to rotate. The second bevel gear at one end of the connecting rod adjusts the first bevel gear to rotate, causing the threaded rod to rotate. The threaded rod drives the top column to rise and provide support. By continuously rotating the sleeve, the top column is adjusted to rise for support. One end of the irregular block is a sliding surface. When the irregular block returns to its original position, it abuts against one end of the toothed block and squeezes the first spring. The rebound of the first spring adjusts the irregular block to re-enter the groove of the toothed block, making it convenient for the operator to use force. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a mechanical jack with an adjustable handle length proposed in this utility model.

[0017] Figure 2 This is a structural diagram of the connecting block and ball bearings of a mechanical jack with an adjustable handle length proposed in this utility model.

[0018] Figure 3 This is a structural diagram of the slide and perforation structure of a mechanical jack with an adjustable handle length proposed in this utility model.

[0019] Figure 4This is a cross-sectional structural diagram of the sleeve and limiting block of a mechanical jack with an adjustable handle length proposed in this utility model.

[0020] Figure 5 for Figure 3 Enlarged view of point A;

[0021] Figure 6 for Figure 3 Enlarged view of point B.

[0022] In the diagram: 1. Main body of the mechanical jack; 2. Adjustment mechanism; 3. Connecting rod; 4. Rotating sleeve; 5. Slide groove; 6. Connecting block; 7. Ball bearing; 8. First bevel gear; 9. Second bevel gear; 10. Threaded rod; 11. Top column; 12. Handle; 13. Movable sleeve; 14. First spring; 15. Pin; 16. Irregular block; 17. Tooth block; 21. Sleeve; 22. Slide cylinder; 23. Perforation; 24. Fixing block; 25. Limiting groove; 26. Limiting block; 27. Sliding plate; 28. Snap-fit ​​post; 29. ​​Second spring. Detailed Implementation

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1: Please refer to Figure 1-6This utility model provides a technical solution: a mechanical jack with an adjustable handle length, including a mechanical jack body 1; a connecting rod 3 is rotatably mounted on the side of the mechanical jack body 1, a rotating sleeve 4 is rotatably mounted on one end of the connecting rod 3, and an adjustment mechanism 2 is provided on one end of the rotating sleeve 4;The adjusting mechanism 2 includes a sleeve 21 installed on the side of the rotating sleeve 4, a slide cylinder 22 slidably installed inside the sleeve 21, and multiple through holes 23 on the sides of both the sleeve 21 and the slide cylinder 22. A fixing block 24 is installed inside the slide cylinder 22, and a limit groove 25 is provided at one end of the fixing block 24. Symmetrical limit blocks 26 are installed in the limit groove 25, and a sliding piece 27 is installed at one end of the limit block 26. A snap-fit ​​post 28 is installed at one end of the sliding piece 27, and the snap-fit ​​post 28 is adapted to the through hole 23. A second spring 29 is installed between the two sliding pieces 27. A first bevel gear 8 is installed at one end of the connecting block 6, and a second bevel gear 9 adapted to the first bevel gear 8 is installed at one end of the connecting rod 3. A thread is installed at one end of the first bevel gear 8. Rod 10, threaded rod 10 has a top post 11 threadedly connected to its side. One end of the slide cylinder 22 is equipped with a handle 12. One end of the rotating sleeve 4 is equipped with a movable sleeve 13. A first spring 14 is installed on the inner wall of the movable sleeve 13. A pin 15 is installed on the other end of the first spring 14. A shaped block 16 is installed on one end of the pin 15. Multiple toothed blocks 17 are installed on one end of the connecting rod 3. The shaped block 16 is adapted to the toothed block 17. When it is necessary to adjust the length of the handle of the mechanical jack body 1, by pressing the two locking posts 28 on the side of the sleeve 21, one end of the locking post 28 slides into the through hole 23. When the locking post 28 slides, it drives the two sliding pieces 27 in the slide cylinder 22 to slide. The limiting block 26 is in the limiting groove 2. 5. Sliding within the sleeve 21, the second spring 29 is compressed, thus releasing the limit on the slide cylinder 22. Pulling the handle 12 moves the slide cylinder 22 within the sleeve 21, allowing it to slide to the appropriate length. After sliding, the second spring 29 rebounds, causing the slide plate 27 to return to its original position, which in turn drives the two locking pins 28 to re-engage into the next through hole 23, fixing the position of the slide cylinder 22 and completing the adjustment of the sleeve 21's length. This makes it easier for the operator to use the main body 1 of the mechanical jack. By turning the handle 12, the sleeve 21 rotates, causing the rotating sleeve 4 at the bottom of the sleeve 21 to rotate. The pin 15 inside the movable sleeve 13 slides into the groove of the toothed block 17, and the irregular block 16 abuts against the side of the toothed block 17, driving the toothed block 17 to move. The rotation of the 7th pinion causes the connecting rod 3 to rotate, which in turn drives the first bevel gear 8 to rotate via the second bevel gear 9 at one end of the connecting rod 3. When the first bevel gear 8 rotates, it drives the threaded rod 10 to rotate. The top column 11, which is threadedly connected to the top column 11, rises and supports the required area. By continuously rotating the sleeve 21, the top column 11 is raised for support. One end of the irregular block 16 has a smooth surface. When the irregular block 16 returns to its original position after rotation, it abuts against one end of the toothed block 17 and squeezes the first spring 14. The rebound of the first spring 14 causes the irregular block 16 to re-engage into the groove of the toothed block 17. This process is repeated to rotate the sleeve 21 back to its original position, adjusting the support height of the top column 11 and improving the applicability of the mechanical jack body 1.

[0027] Example 2: As Figure 2As shown, a groove 5 is provided at one end of the main body 1 of the mechanical jack, a connecting block 6 is installed at one end of the groove 5, and a plurality of balls 7 are rotatably installed at one end of the connecting block 6. When the first bevel gear 8 rotates, the plurality of balls 7 at the bottom of the first bevel gear 8 roll in the groove 5, making the first bevel gear 8 rotate more easily. The remaining features are the same as in embodiment 1.

[0028] The working principle is as follows: When it is necessary to adjust the length of the handle of the mechanical jack body 1, by pressing the two locking pins 28 on the side of the sleeve 21, one end of the locking pin 28 slides into the through hole 23. When the locking pin 28 slides, it drives the two sliding pieces 27 in the slide cylinder 22 to slide. The limiting block 26 slides in the limiting groove 25, and the second spring 29 is compressed. At this time, the limiting of the slide cylinder 22 is released. Pulling the handle 12 moves the slide cylinder 22 to slide in the sleeve 21, so that the slide cylinder 22 slides to the appropriate length. After the slide cylinder 22 slides, the second spring 29 rebounds and moves the sliding piece 27 back to its original position, thereby driving the two locking pins 28 to re-lock into the next through hole 23, fixing the position of the slide cylinder 22, and completing the adjustment of the length of the sleeve 21, making it easier for the operator to use the mechanical jack body 1. By turning the handle 12, the sleeve 21 is rotated, and the rotating sleeve 4 at the bottom of the sleeve 21 rotates. The pin in the movable sleeve 13... 15 slides into the groove of the toothed block 17. The irregular block 16 abuts against the side of the toothed block 17 and drives the toothed block 17 to rotate, which in turn drives the connecting rod 3 to rotate. The second bevel gear 9 at one end of the connecting rod 3 drives the first bevel gear 8 to rotate. Multiple balls 7 at the bottom of the first bevel gear 8 roll in the slide groove 5, making the rotation easier. When the first bevel gear 8 rotates, it drives the threaded rod 10 to rotate. The top column 11, which is threaded to the top column 11, rises and supports the required area. By continuously rotating the sleeve 21, the top column 11 is raised to provide support. One end of the irregular block 16 is a smooth surface. When the irregular block 16 returns to its original position after rotation, it abuts against one end of the toothed block 17 and squeezes the first spring 14. The rebound of the first spring 14 causes the irregular block 16 to re-enter the groove of the toothed block 17. This process is repeated to rotate the sleeve 21 back to its original position, adjusting the support height of the top column 11 and improving the applicability of the mechanical jack body 1.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mechanical jack with an adjustable handle length, comprising a mechanical jack body (1); characterized in that: A connecting rod (3) is rotatably mounted on the side of the main body (1) of the mechanical jack. A rotating sleeve (4) is rotatably mounted on one end of the connecting rod (3). An adjustment mechanism (2) is provided on one end of the rotating sleeve (4). The adjustment mechanism (2) includes a sleeve (21) installed on the side of the rotating sleeve (4), a slide cylinder (22) is slidably installed in the sleeve (21), and multiple through holes (23) are provided on the side of both the sleeve (21) and the slide cylinder (22). A fixing block (24) is installed in the slide cylinder (22), a limiting groove (25) is provided at one end of the fixing block (24), a symmetrical limiting block (26) is installed in the limiting groove (25), a sliding piece (27) is installed at one end of the limiting block (26), a snap-fit ​​post (28) is installed at one end of the sliding piece (27), the snap-fit ​​post (28) is adapted to the through hole (23), and a second spring (29) is installed between the two sliding pieces (27).

2. The mechanical jack with an adjustable handle length according to claim 1, characterized in that: The mechanical jack body (1) has a groove (5) at one end, a connecting block (6) is installed at one end of the groove (5), and a plurality of balls (7) are rotatably installed at one end of the connecting block (6).

3. A mechanical jack with an adjustable handle length according to claim 2, characterized in that: One end of the connecting block (6) is equipped with a first bevel gear (8), and one end of the connecting rod (3) is equipped with a second bevel gear (9) that is adapted to the first bevel gear (8).

4. A mechanical jack with an adjustable handle length according to claim 3, characterized in that: One end of the first bevel gear (8) is fitted with a threaded rod (10), and the side of the threaded rod (10) is threadedly connected to a top post (11).

5. A mechanical jack with an adjustable handle length according to claim 1, characterized in that: A handle (12) is installed at one end of the slide (22), and a movable sleeve (13) is installed at one end of the rotating sleeve (4).

6. A mechanical jack with an adjustable handle length according to claim 5, characterized in that: A first spring (14) is installed on the inner wall of the movable sleeve (13), and a pin (15) is installed on the other end of the first spring (14). A shaped block (16) is installed on one end of the pin (15).

7. A mechanical jack with an adjustable handle length according to claim 6, characterized in that: One end of the connecting rod (3) is equipped with a plurality of toothed blocks (17), and the irregular block (16) is adapted to the toothed blocks (17).

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