A small size wrench for bolt assembly

Abstract

The utility model discloses a small -size wrench for bolt assembly relates to wrench field, including the casing, the inside of casing is provided with motor, the output of motor is provided with screw rod, the inside both sides of casing are seted up with the guide slot, the inside sliding connection of guide slot has the guide block, the one side fixed connection of guide block has the moving block, the inside of moving block is seted up with the screw hole, the other side fixed connection of moving block has the connecting frame, the utility model's advantage lies in: through motor, screw rod, moving block, the group such as connecting block can make the wrench main part slide in the casing, and then can realize its storage and protection, effectively avoid the knock and scratch, can also prolong the life of use simultaneously, through the assembly block, the slide, the spring, the moving block, the fixed seat etc. component can be equipped with the wrench main part, and then can overhaul after long -time use, can also reduce the difficulty of overhaul.

Description

Technical Field

[0001] This utility model relates to the field of wrenches, and in particular to a small wrench for bolt assembly. Background Technology

[0002] A small wrench is a common hand tool mainly used for tightening or loosening bolts, nuts, and other fasteners. There are many types of wrenches, such as open-end wrenches, box wrenches, and socket wrenches, to accommodate fasteners of different shapes and sizes. Wrenches are widely used in mechanical repair, construction, and automotive repair, and are an indispensable tool for craftsmen and DIY enthusiasts. Their ease of use makes them a powerful assistant in improving work efficiency and quality.

[0003] However, in the existing technology, when carrying small wrenches, users often put them together with wrenches of different sizes in the toolbox. However, due to the vibration during carrying, the wrenches are prone to bumping and scratching each other. This continuous friction and impact will gradually damage the surface and structure of the wrench, thus significantly shortening its service life. Utility Model Content

[0004] The purpose of this invention is to provide a small wrench for bolt assembly, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a small wrench for bolt assembly, comprising a housing, a motor disposed inside the housing, a lead screw disposed at the output end of the motor, guide grooves being provided on both sides of the interior of the housing, a guide block being slidably connected inside the guide groove, a movable block being fixedly connected to one side of the guide block, a threaded hole being provided inside the movable block, a connecting bracket being fixedly connected to the other side of the movable block, a support block being fixedly connected inside the housing near the guide groove, an anti-slip pad being disposed on the front side of the housing, and a button being disposed on the right side of the housing.

[0006] Preferably, a fixing seat is fixedly connected to the left side of the connecting frame, and limit holes are opened through the front and rear sides of the fixing seat. An assembly block is provided inside the fixing seat, and an adjustment groove is opened inside the assembly block.

[0007] Preferably, a fixing block is fixedly connected inside the adjusting groove, a sliding rod is slidably connected inside the fixing block, a spring is sleeved on the outside of the sliding rod, a slider is fixedly connected to one end of the sliding rod, a locking block is fixedly connected to the other side of the slider, and a wrench body is fixedly connected to the left side of the assembly block.

[0008] Preferably, the internal thread of the moving block is adapted to the external thread of the lead screw.

[0009] Preferably, the number of the card blocks is two sets, and they are symmetrically arranged about the center line of the assembly block.

[0010] Preferably, the slide bar slides inside the fixed block via a spring, a slider, and a locking block.

[0011] Beneficial effects:

[0012] This invention starts the motor by pressing a button. The motor drives the lead screw to rotate. Under the action of the threaded hole inside the moving block, the connecting frame pushes the wrench body to slide to one side. With the continuous output of the motor, the wrench body slides out of the housing. At this time, the user can hold the housing and operate the wrench body to tighten or loosen the bolts. Similarly, after use, simply drive the lead screw to rotate in the opposite direction. The connecting frame will move in the opposite direction and drive the wrench body to slide into the housing for storage. Through the motor, lead screw, moving block, connecting block, etc., the wrench body can slide in the housing, thereby realizing its storage and protection, effectively avoiding bumps and scratches, and also extending its service life.

[0013] This invention utilizes a locking block to move a movable block and a sliding rod to one side. During this process, the movable block compresses a spring, causing the locking block to slide out of the limiting hole. Disassembly can be easily completed by simply pulling the wrench body laterally. Similarly, during installation, the assembly block is slid into the interior of the fixed seat. When it reaches the preset position, the spring rebounds, causing the locking block to move in the opposite direction and re-engage in the limiting hole, thus installing the wrench body. The wrench body can be assembled and disassembled using components such as the assembly block, sliding rod, spring, movable block, and fixed seat, enabling maintenance after prolonged use and reducing the difficulty of maintenance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the internal structure of the shell of this utility model.

[0015] Figure 2 This is a schematic diagram of the connecting frame structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the internal structure of the assembly block of this utility model.

[0017] Figure 4 This is a partial structural diagram of the present utility model.

[0018] Figure 5 This is a schematic diagram of the external structure of the housing of this utility model.

[0019] In the diagram: 1. Housing; 2. Motor; 3. Lead screw; 4. Guide groove; 5. Guide block; 6. Moving block; 7. Threaded hole; 8. Connecting frame; 9. Support block; 10. Anti-slip pad; 11. Button; 12. Fixed base; 13. Limiting hole; 14. Assembly block; 15. Adjustment groove; 16. Fixed block; 17. Slide rod; 18. Spring; 19. Slider; 20. Locking block; 21. Wrench body. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0021] Example 1

[0022] Please see Figures 1-5 This utility model provides a technical solution: a small wrench for bolt assembly, including a housing 1, a motor 2 inside the housing 1, a lead screw 3 at the output end of the motor 2, guide grooves 4 on both sides inside the housing 1, guide blocks 5 slidably connected inside the guide grooves 4, a movable block 6 fixedly connected to one side of the guide block 5, a threaded hole 7 inside the movable block 6, a connecting bracket 8 fixedly connected to the other side of the movable block 6, a support block 9 fixedly connected inside the housing 1 near the guide grooves 4, an anti-slip pad 10 on the front side of the housing 1, a button 11 on the right side of the housing 1, and the internal thread of the movable block 6 being compatible with the external thread of the lead screw 3.

[0023] Specifically, pressing button 11 starts motor 2, which drives lead screw 3 to rotate. Under the action of threaded hole 7 inside moving block 6, connecting frame 8 pushes wrench body 21 to slide to one side. With the continuous output of motor 2, wrench body 21 slides out of housing 1. At this time, the user can hold housing 1 and operate wrench body 21 to tighten or loosen bolts. Similarly, after use, simply drive lead screw 3 to rotate in the opposite direction, and connecting frame 8 will move in the opposite direction and drive wrench body 21 to slide into housing 1 for storage. Through motor 2, lead screw 3, moving block 6, connecting block and other components, wrench body 21 can slide in housing 1, thereby achieving storage and protection, effectively avoiding bumps and scratches, and also extending service life.

[0024] Example 2

[0025] Please see Figures 1-5This utility model provides a technical solution: a small wrench for bolt assembly. A fixed base 12 is fixedly connected to the left side of the connecting frame 8. Limiting holes 13 are opened through the front and rear sides of the fixed base 12. An assembly block 14 is provided inside the fixed base 12. An adjustment groove 15 is opened inside the assembly block 14. A fixed block 16 is fixedly connected inside the adjustment groove 15. A sliding rod 17 is slidably connected inside the fixed block 16. A spring 18 is sleeved on the outside of the sliding rod 17. A slider 19 is fixedly connected to one end of the sliding rod 17. A locking block 20 is fixedly connected to the other side of the slider 19. A wrench body 21 is fixedly connected to the left side of the assembly block 14. There are two sets of locking blocks 20, which are symmetrically arranged about the center line of the assembly block 14. The sliding rod 17 slides inside the fixed block 16 through the spring 18, the slider 19, and the locking block 20.

[0026] Specifically, pushing the locking block 20 causes the moving block 6 and the slide bar 17 to move to one side. During this process, the moving block 6 compresses the spring 18, and the locking block 20 slides out from the limiting hole 13. Disassembly can be easily completed by simply pulling the wrench body 21 to the side. Similarly, during installation, the assembly block 14 is slid into the fixed seat 12. When it reaches the preset position, the spring 18 rebounds, causing the locking block 20 to move in the opposite direction and re-engage in the limiting hole 13, thus installing the wrench body 21. The wrench body 21 can be installed and removed through the assembly block 14, slide bar 17, spring 18, moving block 6, fixed seat 12, and other components, which enables maintenance after long-term use and reduces the difficulty of maintenance.

[0027] Working Principle: When using this small wrench, first, press button 11 to start motor 2. Motor 2 drives lead screw 3 to rotate. Under the action of threaded hole 7 inside moving block 6, connecting frame 8 pushes wrench body 21 to one side. With the continuous output of motor 2, wrench body 21 slides out of housing 1. At this time, the user can hold housing 1 and operate wrench body 21 to tighten or loosen bolts. Similarly, after use, simply drive lead screw 3 to rotate in the opposite direction. Connecting frame 8 will move in the opposite direction and drive wrench body 21 to slide into housing 1 for storage. Through motor 2, lead screw 3, moving block 6, connecting block, etc., wrench body 21 can slide inside housing 1, thereby achieving storage and protection, effectively avoiding bumps and scratches, and also extending its service life. To extend the service life, when the wrench body 21 needs maintenance, push the locking block 20. The locking block 20 causes the moving block 6 and the slide bar 17 to move to one side. During this process, the moving block 6 compresses the spring 18, and the locking block 20 slides out from the limit hole 13. Disassembly can be easily completed by simply pulling the wrench body 21 to the side. Similarly, during installation, slide the assembly block 14 into the interior of the fixed seat 12. When it reaches the preset position, the spring 18 rebounds, causing the locking block 20 to move in the opposite direction and re-engage in the limit hole 13, thus installing the wrench body 21. The wrench body 21 can be installed and removed through the assembly block 14, slide bar 17, spring 18, moving block 6, fixed seat 12, and other components, which enables maintenance after long-term use and reduces the difficulty of maintenance.

[0028] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A small wrench for bolt assembly, comprising a housing (1), characterized in that: The housing (1) is equipped with a motor (2) inside, and a lead screw (3) is provided at the output end of the motor (2). Guide grooves (4) are provided on both sides of the housing (1). A guide block (5) is slidably connected inside the guide groove (4). A moving block (6) is fixedly connected to one side of the guide block (5). A threaded hole (7) is provided inside the moving block (6). A connecting frame (8) is fixedly connected to the other side of the moving block (6). A support block (9) is fixedly connected to the housing (1) near the guide groove (4). An anti-slip pad (10) is provided on the front side of the housing (1). A button (11) is provided on the right side of the housing (1). The left side of the connecting frame (8) is fixedly connected to a fixed seat (12), and the front and rear sides of the fixed seat (12) are provided with limit holes (13). The fixed seat (12) is provided with an assembly block (14), and the assembly block (14) is provided with an adjustment groove (15). A fixing block (16) is fixedly connected inside the adjusting groove (15). A sliding rod (17) is slidably connected inside the fixing block (16). A spring (18) is sleeved on the outside of the sliding rod (17). A slider (19) is fixedly connected to one end of the sliding rod (17). A locking block (20) is fixedly connected to the other side of the slider (19). A wrench body (21) is fixedly connected to the left side of the assembly block (14).

2. A small wrench for bolt assembly according to claim 1, characterized in that: The internal thread of the moving block (6) is adapted to the external thread of the lead screw (3).

3. A small wrench for bolt assembly according to claim 1, characterized in that: The number of the card blocks (20) is two sets, and they are symmetrically arranged about the center line of the assembly block (14).

4. A small wrench for bolt assembly according to claim 1, characterized in that: The slide bar (17) slides inside the fixed block (16) through the spring (18) in conjunction with the slider (19) and the locking block (20).

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