Screwdriver disassembling and assembling structure and screwdriver

Abstract

The utility model discloses a screwdriver disassembling and assembling structure and a screwdriver. The screwdriver disassembling and assembling structure comprises a main body, the main shaft is rotationally connected to the main body, a tool receiving structure is arranged at the end, away from the main body, of the main shaft, and a locking assembly is connected to the main shaft; the control assembly is arranged on the periphery of the main shaft in a sleeving mode and connected with the main shaft in a sliding mode, and the control assembly comprises a movable sleeve and a fixed sleeve which are detachably connected; wherein a dismounting and mounting gap is formed between one end, close to the main body, of the fixed sleeve and the main body, and the dismounting and mounting gap is used for limiting the rotating operation of the fixed sleeve so as to dismount and mount the movable sleeve. According to the invention, locking and separation of the control assembly can be conveniently realized.

Description

Technical Field

[0001] The utility model relates to the technical field of maintenance tools, and more specifically, to a disassembly and assembly structure of a screwdriver machine and a screwdriver machine. Background Art

[0002] In the existing maintenance and production fields, wrenches and screwdrivers, as important components of manual tools, are widely used in various fastening and disassembly operations. However, traditional impact screwdriver machines and impact wrenches generally adopt a single clamping structure design, which can only clamp hex bits or socket wrenches of specific sizes respectively, greatly limiting the flexibility and application range of the tools. For example, an impact screwdriver machine can usually only clamp a 6.35 mm hex bit, while an impact wrench is limited to a 12.7 mm socket wrench. This limitation is particularly obvious in complex maintenance and production scenarios, where tools need to be frequently replaced, reducing work efficiency.

[0003] To overcome this defect, a tool with an integrated wrench and screwdriver structure has emerged on the market. Through the design of a control component, this tool can both clamp a 6.35 mm hex bit and a 12.7 mm socket wrench, realizing the function of multi-purpose clamping. However, this design still has many deficiencies in practical applications. First, its disassembly and assembly processes are relatively cumbersome and not convenient to disassemble. Users need to have certain operation skills and experience, increasing the complexity and time cost of use. Second, due to the complex structure, the production cost is relatively high, which is not conducive to large-scale popularization and application.

[0004] Therefore, how to solve the problem of the cumbersome disassembly and assembly of the existing integrated wrench and screwdriver structure is an urgent problem for technicians in this field at present. Summary of the Utility Model

[0005] In view of this, the purpose of the utility model is to provide a disassembly and assembly structure of a screwdriver machine and a screwdriver machine, which can be assembled and disassembled more conveniently and can reduce the production and maintenance costs of products.

[0006] To achieve the above purpose, in the first aspect, the present application provides a disassembly and assembly structure of a screwdriver machine, including:

[0007] A main body;

[0008] A main shaft, rotatably connected to the main body. A tool receiving structure is provided at the end of the main shaft away from the main body, and a locking component is connected to the main shaft;

[0009] A control component, sleeved on the outer periphery of the main shaft and slidably connected to the main shaft. The control component includes a movable sleeve and a fixed sleeve that are detachably connected;

[0010] Wherein, a disassembly and assembly gap is provided between one end of the fixed sleeve close to the main body and the main body, and the disassembly and assembly gap is used to limit the rotation operation of the fixed sleeve for disassembling and assembling the movable sleeve.

[0011] Through the above technical solution, the problem that the fixed sleeve and the movable sleeve of the existing control assembly are difficult to disassemble after assembly is effectively solved. The fixed sleeve and the movable sleeve of the control assembly of the present application can be easily disassembled, and the disassembly and assembly gap between the fixed sleeve and the main body can facilitate the insertion of a special tool to fix the fixed sleeve. The disassembly and assembly are realized by the sliding or rotation of the movable sleeve relative to the fixed sleeve, and the operation is simple, which is convenient for improving the production assembly efficiency and the maintenance disassembly efficiency. The disassembly and assembly gap can not only realize the compact fit of the structure, but also provide an operation space for the disassembly and assembly of the disassembly and assembly tool.

[0012] Combined with the first aspect, a further technical solution is that a convex structure or a groove is provided on the outer periphery of the fixed sleeve, and a groove or a convex structure is provided on the inner periphery of the movable sleeve, and the convex structure and the groove are slidably and / or rotationally matched to realize the locking and separation of the fixed sleeve and the movable sleeve.

[0013] Combined with the first aspect, a further technical solution is that the groove includes a positioning groove and a rotation stopping groove, and both the positioning groove and the rotation stopping groove are connected with a channel communicating with the end face of the fixed sleeve or the end face of the movable sleeve; the convex structure includes a convex platform and a rotation stopping buckle, and in the locked state of the fixed sleeve and the movable sleeve, the convex platform is located in the positioning groove and the rotation stopping buckle is located in the rotation stopping groove.

[0014] Through the above technical solution, the convex and groove structures are simple, convenient for processing and manufacturing, and convenient for operation. The convex structure also has a locking rotation stopping buckle and a rotation stopping groove, which improves the locking reliability and reduces the separation risk during work.

[0015] Combined with the first aspect, a further technical solution is that the positioning groove is an arc-shaped groove rotating around the central axis of the fixed sleeve or the central axis of the movable sleeve. In the locked state of the fixed sleeve and the movable sleeve, the distance from the bottom wall position where the convex platform contacts the positioning groove to the central axis of the fixed sleeve or the central axis of the movable sleeve is the smallest, so that the rotation stopping buckle enters the rotation stopping groove.

[0016] Through the above technical solution, through the variable radius design of the positioning groove, during the sliding or rotation of the movable sleeve relative to the fixed sleeve, the convex platform slides along the positioning groove and moves closer to the central axis at the same time, so as to push the rotation stopping buckle into the rotation stopping groove and reduce the risk of the fixed sleeve and the movable sleeve separating from each other.

[0017] Combined with the first aspect, a further technical solution is that one end of the fixed sleeve close to the main body is provided with a concavo-convex structure.

[0018] Through the above technical solution, the concave-convex structure facilitates the fixation of the fixing sleeve by the tool, prevents the fixing sleeve from rotating during the installation and disassembly process, and improves the efficiency and reliability of the installation and disassembly.

[0019] In combination with the first aspect, a further technical solution is that the concave-convex structure includes a plurality of ribs provided on the end face of the fixing sleeve close to the main body, and the plurality of ribs are circumferentially distributed on the end face of the fixing sleeve.

[0020] By adopting the above technical solution, the concave-convex structure can facilitate the fixation of the fixing sleeve by using a tool, and limit the rotation of the fixing sleeve for the disassembly and assembly of the movable sleeve.

[0021] In combination with the first aspect, a further technical solution is that a fixing member is provided on the main shaft on the side of the fixing sleeve away from the main body, a first elastic member is provided between the fixing sleeve and the fixing member, the movable sleeve is further connected with an insert, and the insert is connected with the locking assembly.

[0022] By adopting the above technical solution, the fixing member abuts against the control assembly in the working state, can provide a supporting force for the sleeve abutting against the control assembly, and transmit the force received by the sleeve to the main shaft. The fixing member can also be used to provide a supporting force for the elastic member provided between the control assembly and the fixing member to realize the working reset of the control assembly.

[0023] In combination with the first aspect, a further technical solution is that a second elastic member is provided between the insert and the fixing member, the K value of the first elastic member is greater than the K value of the second elastic member, a flange is provided at one end of the movable sleeve away from the main body, and a ring groove for sliding connection with the flange is provided at one end of the insert away from the main body.

[0024] By the above technical solution, the insert and the movable sleeve are respectively driven to slide relative to the main shaft by the second elastic member and the first elastic member. When the movable sleeve drives the fixing sleeve to move relative to the main shaft, the second spring pushes the insert to move while the first spring prevents the fixing sleeve from moving. The movement of the insert releases the thrust on the sphere to realize the unlocking of the sphere to the tool. After the driving force on the movable sleeve disappears, the first spring provides a reset force, and the second spring prevents the reset. Because the K value of the first elastic member is greater than the K value of the second elastic member, the fixing sleeve drives the movable sleeve, the movable sleeve drives the insert to reset, and the insert pushes the sphere to realize the locking of the tool. The flange of the insert away from the main body is used to connect with the movable sleeve, and the movable sleeve can drive the insert to move close to the main body during reset.

[0025] In combination with the first aspect, a further technical solution is that when the insert abuts against the fixing member, it can drive the locking assembly to act to fix the tool in the tool receiving structure.

[0026] Through the above technical solution, the relative sliding of the insert with respect to the main shaft can control the locking or unlocking of the tool within the tool receiving structure, and the structure is simple and convenient.

[0027] In a second aspect, the present application provides a screwdriver machine, including the screwdriver machine disassembly and assembly structure of the first aspect.

[0028] For the screwdriver machine adopting the screwdriver machine disassembly and assembly structure, production, assembly and maintenance are convenient, production efficiency is improved, and maintenance cost is reduced.

[0029] In summary, the present application has at least one of the following beneficial technical effects:

[0030] 1. The screwdriver machine disassembly and assembly structure of the present application has a simple structure, is convenient and fast for disassembly and assembly, and reduces the difficulty of disassembly and assembly.

[0031] 2. The screwdriver machine disassembly and assembly structure of the present application can improve production and maintenance efficiency, and reduce production and maintenance costs.

[0032] 3. The screwdriver machine of the present application is matched with the disassembly and assembly tool, which is convenient for the repair and replacement of spare parts.

[0033] 4. The screwdriver machine disassembly and assembly method of the present application improves the assembly and disassembly efficiency, and enhances the user experience and recognition. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings according to the provided drawings without creative efforts.

[0035] Figure 1 It is a schematic structural diagram of the first embodiment of the screwdriver machine disassembly and assembly structure provided by the present application;

[0036] Figure 2 It is a schematic diagram of the assembly of the first embodiment of the screwdriver machine disassembly and assembly structure of the present application with the screwdriver;

[0037] Figure 3 It is a schematic diagram of the assembly of the first embodiment of the screwdriver machine disassembly and assembly structure of the present application with the sleeve;

[0038] Figure 4 It is a schematic exploded view of the first embodiment of the screwdriver machine disassembly and assembly structure provided by the present application;

[0039] Figure 5 It is a schematic structural view of the fixing sleeve of the first embodiment of the screwdriver machine disassembly and assembly structure provided by the present application;

[0040] Figure 6Schematic diagram of the movable sleeve of the first embodiment of the screwdriver machine disassembly and assembly structure of the present application;

[0041] Figure 7 Schematic diagram of the second embodiment of the screwdriver machine disassembly and assembly structure of the present application;

[0042] Figure 8 Schematic diagram of the assembly of the second embodiment of the screwdriver machine disassembly and assembly structure of the present application with the sleeve;

[0043] Figure 9 Exploded view of the second embodiment of the screwdriver machine disassembly and assembly structure of the present application;

[0044] Figure 10 Schematic diagram of the structure of the disassembly and assembly tool of the present application;

[0045] Figure 11 Schematic diagram of the structure of the disassembly and assembly tool for disassembly and assembly;

[0046] Figure 12 Schematic diagram of the structure of the screwdriver machine of the present application.

[0047] Reference numerals:

[0048] 100, screwdriver machine disassembly and assembly structure; 1, main body; 2, main shaft; 21, polygonal groove; 3, bit; 4, wrench socket; 5, locking steel ball; 6, sealing assembly; 7, control assembly; 71, insert; 711, first contact surface; 712, second contact surface; 72, fixed sleeve; 721, fixed boss; 722, anti-rotation buckle; 723, concave-convex structure; 73, movable sleeve; 731, positioning groove; 7311, first channel; 732, anti-rotation groove; 7321, second channel; 8, limit retaining ring; 9, first spring; 91, second spring; 10, sealing structure; L, disassembly and assembly gap;

[0049] 200, disassembly and assembly tool; 201, opening; 202, convex part; 203, handle;

[0050] 300, screwdriver machine; 301, main unit. Detailed implementation manners

[0051] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present utility model.

[0052] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", 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 a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0053] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present 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, so it cannot be understood as a limitation to the present application.

[0054] The following will describe the embodiments of the present application in detail with reference to the drawings. Without conflict, the features in the following embodiments can be combined with each other. Embodiment 1

[0055] The core of this embodiment is to provide a disassembly and assembly structure for a screwdriver machine, which can be assembled and disassembled more conveniently and can reduce the production cost of the product.

[0056] Please refer to Figures 1 - 4 , a disassembly and assembly structure for a screwdriver machine includes a main body 1, a main shaft 2, a locking assembly, a sealing assembly 6 and a control assembly 7. The locking assembly in this embodiment is a locking steel ball 5.

[0057] Specifically, a through hole for installing the main shaft 2 is provided at the first end of the main body 1, so that one end of the main shaft 2 is located in the inner cavity of the main body 1, and the other end of the main shaft 2 extends to the outside of the main body 1. That is to say, by setting the through hole, the rotational connection between the main shaft 2 and the main body 1 can be realized, so that the main shaft 2 transmits the output power of the motor in the inner cavity of the main body 1 to the next component, thereby completing the effective output of power. A tool receiving structure is provided at the end of the main shaft away from the main body. The tool receiving structure is a polygonal groove extending along the axial direction of the main shaft 2 for installing a bit 3. The bit 3 to be used is preliminarily fixed through the polygonal groove, and a polygonal column for sleeving a wrench socket 4 is provided on the outer periphery of the polygonal groove. In this device, the power output path is that the motor outputs to the main shaft 2, and the power is transmitted to the bit 3 through the main shaft 2, thereby realizing the power output of the device.

[0058] A long hole for installing two locking steel balls 5, which extends radially along the main shaft 2, is provided circumferentially on the polygonal groove. The long hole communicates with the polygonal groove. The locking steel balls 5 can move along the length direction of the long hole. That is to say, by the reciprocating radial movement of the locking steel balls 5 along the main shaft 2, the locking and loosening of the bit 3 are realized. The inner circumference of the control assembly 7 provided on the outer circumference of the main shaft 2 abuts against the locking steel balls 5. Through the cooperation of the control assembly 7 and the locking steel balls 5, the locking and unlocking of the bit 3 are realized.

[0059] The control assembly 7 is sleeved on the outer circumference of the main shaft 2 and is slidably connected to the main shaft 2. The control assembly 7 includes a movable sleeve 73 and a fixed sleeve 72 that are detachably connected. The control assembly 7 has a locked state and an unlocked state when sliding relative to the main shaft 2. In the locked state, the control assembly 7 is connected to the locking assembly so that the locking assembly restricts the tool connected to the tool receiving structure. In the unlocked state, the locking assembly releases the restriction on the tool connected to the tool receiving structure. Wherein, there is a disassembly and assembly gap L between the fixed sleeve 72 and the main body 1 at one end close to the main body 1. The disassembly and assembly gap L is used to operate to limit the rotation of the fixed sleeve 72 for disassembling and assembling the movable sleeve 73.

[0060] The control assembly includes a movable sleeve insert 71, a fixed sleeve 72 and a movable sleeve 73. The movable sleeve insert 71 is provided on the outer circumference of the main shaft 2. In the locked state, the inner circumference of the movable sleeve insert 71 abuts against the locking steel balls 5. The fixed sleeve 72 is provided on the outer circumference of the main shaft 2 and on the side close to the main body 1. The movable sleeve 73 is sleeved on the outer circumferences of the movable sleeve insert 71 and the fixed sleeve 72. A fixing member is also fixedly connected to the main shaft 2. A first elastic member for applying a restoring force to the fixed sleeve 72 in the direction towards the main body 1 is provided between the fixed sleeve 72 and the fixing member. The first elastic member is a first spring 9. In this embodiment, the movable sleeve 73 and the insert 71 are fixedly connected by interference fit. The insert 71 is provided with a first contact surface 711 and a second contact surface 712. The distance from the second contact surface 712 to the center line of the main shaft 2 is greater than the distance from the first contact surface 711 to the center line of the main shaft 2. In the locked state, the first contact surface 711 of the insert 71 abuts against the locking steel balls 5 and pushes the locking steel balls 5 into the polygonal groove 21 to lock the screwdriver. In the unlocked state, when the bit 3 is taken out, a force is applied to slide the movable sleeve 73 in the direction away from the main body 1. The first contact surface 711 leaves the locking steel balls 5. During the pulling process of the bit 3, the locking steel balls 5 are pushed into the space enclosed by the second contact surface 712. The locking steel balls 5 disengage from the polygonal groove 21 and cannot lock the bit 3, realizing unlocking. After the force on the movable sleeve 73 disappears, the first spring 9 pushes the fixed sleeve 72 to reset in the direction towards the main body 1. The fixed sleeve 72 drives the movable sleeve 73 and the insert 71 to reset together.

[0061] It should be noted that through the cooperation of the movable sleeve insert 71, the fixed sleeve 72 and the movable sleeve 73, the positioning of the locking steel balls 5 can be realized.

[0062] Among them, the movable sleeve 73 and the movable sleeve insert 71 are fixedly connected by an interference fit. The fixed sleeve 72 is pre-installed circumferentially on the main shaft 2. With such a setting, the locking and disassembly with the fixed sleeve 72 can be achieved only by rotating the movable sleeve 73. This setting method is beneficial to quickly and accurately install and disassemble the control component 7, with simple operation and convenient use. In real life, there is no limit to the setting methods of the movable sleeve insert 71, the fixed sleeve 72, and the movable sleeve 73, as long as the above technical effects can be achieved.

[0063] In this embodiment, rotating the movable sleeve 73 forward is used to lock it with the fixed sleeve 72, and rotating the movable sleeve 73 backward is used to unlock it from the fixed sleeve 72. In real life, there is no limit to the forward and backward directions, which can be set according to the actual situation. The key is to set according to the rotation direction of the motor so that the movable sleeve 73 is locked in the rotation direction that is not easy to disengage.

[0064] Please refer to Figure 5 and Figure 6 On the outer periphery of the fixed sleeve 72, there are convex structures or grooves, and on the inner periphery of the movable sleeve 73, there are grooves or convex structures. The convex structures and the grooves are in sliding and / or rotational fit to achieve the locking and separation of the fixed sleeve 72 and the movable sleeve 73. The groove includes a positioning groove 731 and an anti-rotation groove 732, and both the positioning groove 731 and the anti-rotation groove 732 are connected to a channel that communicates with the end face of the fixed sleeve 72 or the end face of the movable sleeve 73; the convex structure includes a boss and an anti-rotation buckle 722. In the locked state of the fixed sleeve 72 and the movable sleeve 73, the boss is located in the positioning groove 731, and the anti-rotation buckle 722 is located in the anti-rotation groove 732. The positioning groove 731 is an arc-shaped groove that rotates around the central axis of the fixed sleeve 72 or the central axis of the movable sleeve 73. In the locked state of the fixed sleeve 72 and the movable sleeve 73, the distance from the bottom wall position where the boss contacts the positioning groove 731 to the central axis of the fixed sleeve 72 or the central axis of the movable sleeve 73 is the smallest, so that the anti-rotation buckle 722 can enter the anti-rotation groove 732. That is, the radius of the bottom wall of the positioning groove 731 becomes smaller in the locking direction and is the smallest at the position where the boss contacts the positioning groove 731, so that the movable sleeve 73 and the fixed sleeve 72 move radially relative to each other, and the anti-rotation buckle 722 enters the anti-rotation groove 732 to lock.

[0065] Please refer to Figure 5 and Figure 6, the outer periphery of the fixed sleeve 72 is provided with a fixed boss 721 and an anti-rotation buckle 722, and the inner periphery of the movable sleeve 73 is provided with a positioning groove 731 and an anti-rotation groove 732. The positioning groove 731 is used for clamping the fixed boss 721, and the anti-rotation groove 732 is used for clamping the anti-rotation buckle 722. One end of the fixed sleeve 72 close to the main body 1 is provided with a concavo-convex structure 723. The concavo-convex structure 723 includes a plurality of ribs arranged on the end face of the fixed sleeve 72 close to the main body 1. The plurality of ribs are circumferentially distributed on the end face of the fixed sleeve 72. In this embodiment, the ribs are evenly distributed circumferentially. In actual application, they can be irregularly arranged as long as the anti-rotation effect can be achieved. It can be understood that by providing a clamping structure in the circumferential direction of the fixed sleeve 72, the relative fixation of the fixed sleeve 72 and the movable sleeve 73 is realized. The clamping structure can be the fixed boss 721 and the anti-rotation buckle 722, or other clamping parts, as long as the clamping of the fixed sleeve 72 and the movable sleeve 73 can be realized.

[0066] Among them, in one embodiment, the fixed boss 721 is a rectangular structure with a radian along the outer periphery of the fixed sleeve 72, the anti-rotation buckle 722 is a frustum structure extending radially outward along the fixed sleeve 72, and the anti-rotation groove 732 is a round hole. However, in actual life, there is no limitation on this, as long as the above technical effects can be achieved.

[0067] It should be noted that through the clamping of the positioning groove 731 and the fixed boss 721, the primary fixation of the fixed sleeve 72 and the movable sleeve 73 is realized. Through the clamping of the anti-rotation groove 732 and the anti-rotation buckle 722, the secondary fixation of the fixed sleeve 72 and the movable sleeve 73 is realized. By setting two clamping structures, the double fixation of the fixed sleeve 72 and the movable sleeve 73 is realized, and the effective locking of the bit 3 is achieved.

[0068] In another embodiment, various clamping grooves are provided on the fixed sleeve 72, and various corresponding clamping parts are provided on the movable sleeve 73. Through the cooperation of the clamping grooves and the clamping parts, the fixation of the fixed sleeve 72 and the movable sleeve 73 is realized. In actual life, there are no limitations on the type, installation position, specifications, etc. of the clamping structure, as long as the above technical effects can be achieved.

[0069] On the basis of the above embodiments, the inner periphery of the movable sleeve 73 is provided with a first channel 7311 communicating with the positioning groove 731 and a second channel 7321 communicating with the anti-rotation groove 732. One end of both the first channel 7311 and the second channel 7321 is communicated with the end face of the movable sleeve 73.

[0070] Furthermore, both the first channel 7311 and the second channel 7321 are in an inverted L-shaped structure, and the first channel 7311 cooperates with the fixed boss 721 to enable the fixed boss 721 to move along the first channel 7311, and the second channel 7321 cooperates with the anti-rotation buckle 722 to enable the anti-rotation buckle 722 to move along the second channel 7321.

[0071] It should be noted that by providing the first channel 7311 and the second channel 7321 on the movable sleeve 73, the fixed boss 721 can be advanced into the movable sleeve 73 along the first channel 7311, and the anti-rotation buckle 722 can be advanced into the movable sleeve 73 through the second channel 7321. The radius of the bottom wall of the first channel 7311 becomes smaller in the tightening rotation direction and is the smallest at the locking position. When the fixed boss 721 moves to the locking position (i.e., the end of the first channel 7311), the anti-rotation buckle 722 is pushed into the anti-rotation groove 732 in the movable sleeve 73. The fixed sleeve 72 is fixed by the disassembly and assembly tool 200, and the movable sleeve 73 is rotated forward to realize the clamping connection between the fixed sleeve 72 and the movable sleeve 73.

[0072] As a preferred embodiment, the positioning groove 731 and the anti-rotation groove 732 are respectively provided at the ends of the first channel 7311 and the second channel 7321. In this way, the first channel 7311 and the second channel 7321 play a primary positioning effect, and the positioning groove 731 and the anti-rotation groove 732 play a secondary positioning effect. Through the two-positioning, the effective locking of the fixed sleeve 72 and the movable sleeve 73 is realized. However, in actual life, there is no limitation on the specific positions of the positioning groove 731 and the anti-rotation groove 732 in the first channel 7311 and the second channel 7321, as long as the above technical effects can be achieved.

[0073] The self-locking and disassembly process of the device is as follows: The anti-rotation buckle 722 and the fixed boss 721 provided on the fixed sleeve 72 are correspondingly pushed in according to the set assembly direction through the first channel 7311 and the second channel 7321 provided on the movable sleeve 73. After being pushed in, a relatively small space gap will be formed between the fixed sleeve 72 and the main body 1. The concave-convex structure 723 of the fixed sleeve 72 is fixed by the disassembly and assembly tool in this gap to limit the rotation of the fixed sleeve 72. Rotating the movable sleeve 73 can make the anti-rotation buckle 722 on the fixed sleeve 72 snap into the anti-rotation groove 732, and at the same time, the fixed boss 721 on the fixed sleeve 72 and the positioning groove 731 on the movable sleeve 73 achieve axial movement limit. Under the action of the first spring 9, the two parts of the movable sleeve 73 and the fixed sleeve 72 are relatively reliably fixed and self-locked; when disassembling, the fixed sleeve 72 is also fixed by the disassembly and assembly tool in the gap between the fixed sleeve 72 and the main body 1, and the movable sleeve 73 is rotated in the opposite direction to make the anti-rotation buckle 722 on the fixed sleeve 72 disengage from the anti-rotation groove 732 of the movable sleeve 73, and the fixed sleeve 72 can be axially pulled out until it is rotated in the opposite direction.

[0074] In the above embodiment, there are at least two fixed bosses 721 and anti-rotation buckles 722, and the positioning grooves 731 and anti-rotation grooves 732 are correspondingly provided with the fixed bosses 721 and anti-rotation buckles 722.

[0075] It can be understood that in one embodiment, there are two, three or more fixing bosses 721 and anti-rotation buckles 722, and the corresponding positioning grooves 731 and anti-rotation grooves 732 are also set to two, three or more. The multiple fixing bosses 721 and anti-rotation buckles 722 can be arranged crosswise in the circumferential direction of the fixing sleeve 72, or the fixing bosses 721 can be arranged adjacent to each other, and there is no limitation on this.

[0076] In another embodiment, multiple fixing bosses 721 and multiple anti-rotation buckles 722 can be arranged crosswise along the axial direction of the fixing sleeve 72.

[0077] Reference Figures 1 - 6 , as a preferred implementation manner, the second end of the movable sleeve insert 71 abuts against the limit retaining ring 8, and a first spring 9 is arranged between the limit retaining ring 8 and the fixing sleeve 72.

[0078] It should be noted that relying on the two-part structures of the movable sleeve 73 and the fixing sleeve 72 for self-locking to achieve mutual limitation and non-separation. After setting the limit retaining ring 8, it restricts the manipulation assembly 7 from disengaging from the main shaft 2. After setting the first spring 9, it can ensure that the manipulation assembly 7 returns to the free position after the bit 3 is unlocked or locked. The locking steel balls 5 are limited by the movable sleeve 73 and the insert 71 to achieve the self-locking function of the bit 3 in the main shaft 2. When it is necessary to unlock and pull out the bit 3, push the movable sleeve 73 to move the lock sleeve assembly axially in the direction of the bit 3 by a certain position, so that the movable sleeve insert 71 moves out of the positioning space of the locking steel balls 5, and the locking steel balls 5 have a radial movement space in the movable sleeve insert 71. When the bit 3 is taken out, release the movable sleeve 73, and under the action of the first spring 9, the locking steel balls 5 return to the initial position.

[0079] In the above situation, the main shaft 2 is a T-shaped shaft, and an annular groove for installing an O-ring is provided on the outer periphery of the first end of the main shaft 2.

[0080] It can be understood that a sealing structure 10 is provided on the outer periphery of the first end of the main shaft 2. The sealing structure 10 includes a circlip and an O-ring. The wrench socket 4 is fixed by the circlip, and the main shaft 2 and the wrench socket 4 are sealed by the O-ring. In this embodiment, the main shaft 2 and the wrench socket 4 are fixed and sealed in the above manner, but in actual life, there is no limitation on this, as long as the above technical effects can be achieved.

[0081] In the above embodiment, there are at least two groups of long holes, and at least two locking steel balls 5 are arranged in any group of long holes.

[0082] It should be noted that the number of the long holes can be set according to the actual situation, and there is no limit to the diameter of the long holes, as long as they can cooperate with the locking steel balls 5. Moreover, the locking steel balls 5 can be one group or two groups, etc., and there is no limit to this. The key design to be achieved is that in the locked state, the first contact surface 711 abuts against the ball that is farthest from the center line of the main shaft 2 among at least two balls so that the part of the ball that is closest to the center line of the main shaft 2 among at least two balls enters the polygonal groove 21; in the unlocked state, the insert 71 slides relative to the main shaft 2 until the second contact surface 712 corresponds to the chute, and the ball that is closest to the center line of the main shaft 2 among at least two balls completely enters the chute.

[0083] Based on the above embodiments, a sealing assembly 6 is provided on the outer periphery of the main shaft 2, and the sealing assembly 6 is used to seal the main shaft 2 and the main body 1.

[0084] It can be understood that the sealing assembly 6 includes a circlip and an O-ring. The main shaft 2 is fixed to the main body 1 through the circlip, and the gap between the main shaft 2 and the main body 1 is sealed through the O-ring. However, in actual life, there is no limit to the components for sealing and fixing the main shaft 2, as long as the above technical effects can be achieved.

[0085] In summary, the screwdriver machine disassembly and assembly structure provided by this application can be used as a multi-purpose clamping structure product that can be used as both an impact wrench and an impact screwdriver machine. This product can realize the fixed clamping of a 12.7 mm or 19 mm wrench socket 4, and can clamp a 6.35 mm hexagon screwdriver bit 3 at the same time. The product realizes a more convenient assembly mode and disassembly mode, and reduces the implementation cost of the product. Embodiment 2

[0086] Please refer to Figures 7 - 9 , the difference from Embodiment 1 is that a second elastic member is provided between the fixing member 8 and the insert 71. The second elastic member is a second spring 91. The first spring 9 and the second spring 91 are located on both sides of the fixing member 8, and the K value of the first spring 9 is greater than the K value of the second spring 91.

[0087] During the use of this embodiment, the first spring 9 pushes the fixing sleeve 72 to move closer to the main body 1, and the second spring 91 pushes the insert 71 to move away from the main body 1. Since the elastic force of the first spring 9 is greater than that of the second spring 91, the control component 7 is in a locked state at the position close to the main body 1 in the free state. When the movable sleeve 73 is driven to move away from the main body 1, the first spring 9 is compressed, and the second spring 91 pushes the insert 71 to move away from the main body 1, being in an unlocked state. The structural advantage of this embodiment is that the insert 71 and the movable sleeve 73 are slidably connected, and the impact wear is smaller during the working process, which can better ensure the realization of the unlocked state. In the first embodiment, the insert 71 and the movable sleeve 73 are in interference fit, and wear will occur during the working impact. After a long time, the connection is unreliable, resulting in the movable sleeve 73 not being able to drive the insert 71 to move away from the main body 1 in the unlocked state, causing the unlocking function to fail. In this embodiment, the insert 71 and the movable sleeve 73 can be in interference connection or sliding connection, and both can achieve effective unlocking and locking functions.

[0088] Please refer to Figure 10 、 Figure 11 A disassembly and assembly tool for disassembling and assembling the movable sleeve 73, which is used to lock and unlock the screwdriver machine disassembly and assembly structure of the first embodiment and the second embodiment. The disassembly and assembly tool 200 includes an opening 201 for avoiding the main shaft, and a convex part or a concave part for restricting the rotation of the fixing sleeve. In this embodiment, it is a convex part 202. Among them, at least part of the thickness of the disassembly and assembly tool 200 is less than the disassembly and assembly gap L of the screwdriver machine.

[0089] Please refer to Figure 3 、 Figure 5 、 Figure 6 、 Figure 10 When it is necessary to disassemble the control component 7, insert the fixing sleeve 72 into the movable sleeve 73, and use the convex part 202 of the disassembly and assembly tool 200 to be stuck into the concave-convex structure 723 of the fixing sleeve 72 to fix the fixing sleeve 72 within the disassembly and assembly gap L between the fixing sleeve 72 and the main body 1. At the same time, rotate the movable sleeve 73 forward to lock the fixing sleeve 72 and the movable sleeve 73. At this time, the insert 71 of the movable sleeve moves and tightens along the radial direction of the main shaft 2, thus locking.

[0090] When it is necessary to disassemble, use the disassembly and assembly tool 200 to fix the fixing sleeve 72 within the disassembly and assembly gap L between the fixing sleeve 72 and the main body 1. At the same time, rotate the movable sleeve 73 in the reverse direction to unlock the fixing sleeve 72 and the movable sleeve 73, so that the movable sleeve 73 is separated from the fixing sleeve 72. Embodiment 3

[0091] Please refer to Figure 12 This embodiment discloses a screwdriver machine 300, which includes the screwdriver machine disassembly and assembly structure 100 and the main machine 301 in the first embodiment or the second embodiment.

[0092] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0093] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0094] The above has introduced in detail a disassembly and assembly structure of a screwdriver machine provided by the present utility model. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A disassembly and assembly structure of a screwdriver machine, characterized in that, Comprising: A main body; A main shaft rotatably connected to the main body, a tool receiving structure is provided at an end of the main shaft away from the main body, and a locking assembly is connected to the main shaft; A control assembly sleeved on the outer periphery of the main shaft and slidably connected to the main shaft, the control assembly includes a movable sleeve and a fixed sleeve that are detachably connected; Wherein, a disassembly and assembly gap is provided between one end of the fixed sleeve close to the main body and the main body, and the disassembly and assembly gap is used to limit the rotation operation of the fixed sleeve for disassembling and assembling the movable sleeve.

2. The screwdriver machine disassembly and assembly structure according to claim 1, wherein, A convex structure or a groove is provided on the outer periphery of the fixed sleeve, and a groove or a convex structure is provided on the inner periphery of the movable sleeve, and the convex structure and the groove are slidably and / or rotationally matched to realize the locking and separation of the fixed sleeve and the movable sleeve.

3. The screwdriver machine disassembly and assembly structure according to claim 2, characterized in that, The groove includes a positioning groove and a rotation stopping groove, and both the positioning groove and the rotation stopping groove are connected with channels communicating with the end face of the fixed sleeve or the end face of the movable sleeve; the convex structure includes a boss and a rotation stopping buckle, and in the locked state of the fixed sleeve and the movable sleeve, the boss is located in the positioning groove and the rotation stopping buckle is located in the rotation stopping groove.

4. The screwdriver machine disassembly and assembly structure according to claim 3, wherein, The positioning groove is an arc groove rotating around the central axis of the fixed sleeve or the central axis of the movable sleeve. In the locked state of the fixed sleeve and the movable sleeve, the distance from the bottom wall position where the boss contacts the positioning groove to the central axis of the fixed sleeve or the central axis of the movable sleeve is the smallest, so that the rotation stopping buckle enters the rotation stopping groove.

5. The screwdriver machine disassembly and assembly structure according to any one of claims 1-4, characterized in that, One end of the fixed sleeve close to the main body is provided with a concave-convex structure.

6. The screwdriver machine disassembly and assembly structure according to claim 5, characterized in that, The concave-convex structure includes a plurality of convex ribs provided on the end face of the fixed sleeve close to the main body, and the plurality of convex ribs are circumferentially distributed on the end face of the fixed sleeve.

7. The screwdriver machine disassembly and assembly structure according to any one of claims 1-4, characterized in that A fixing member is provided on the main shaft on a side opposite to the fixed sleeve away from the main body. A first elastic member is provided between the fixed sleeve and the fixing member. The movable sleeve is further connected with an insert, and the insert is connected with the locking assembly.

8. The screwdriver machine disassembly and assembly structure according to claim 7, characterized in that, A second elastic member is provided between the insert and the fixing member. The K value of the first elastic member is greater than the K value of the second elastic member. A flange is provided at one end of the movable sleeve away from the main body, and a ring groove slidably connected with the flange is provided at one end of the insert away from the main body.

9. The screwdriver machine disassembly and assembly structure according to claim 7, wherein, When the insert abuts against the fixing member, it can drive the locking assembly to act to fix the tool in the tool receiving structure.

10. A screwdriver machine, characterized in that, Comprising a screwdriver disassembly and assembly structure according to any one of claims 1-9.

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