A wrench screwdriver integrated device universal for single and double screwdriver bits

Abstract

The utility model discloses an integrated wrench-screwdriver device universal for single and double screwdriver bits, and relates to the technical field of hand tools. In order to solve the problem that the existing wrench cannot be used for two screwdriver bits at the same time, the device comprises an aluminum head shell, a main shaft and a locking assembly. The main shaft is arranged in the inner cavity of the aluminum head shell and extends to the outside of the aluminum head shell. The power of a motor is transmitted through the main shaft. The end of the main shaft away from the aluminum head shell is provided with a mounting groove extending along its axial direction and used for mounting the single and double screwdriver bits. The single screwdriver bit or the double screwdriver bit is mounted on the main shaft through the mounting groove, so that the power transmitted by the main shaft is output through the single screwdriver bit or the double screwdriver bit. A wrench socket is provided on the outer periphery of the mounting groove. The locking assembly is arranged on the outer periphery of the main shaft and is located between the aluminum head shell and the wrench socket. The locking assembly is axially positioned by the wrench socket. The locking assembly is used for locking and loosening the single and double screwdriver bits. With such an arrangement, the locking of the single screwdriver bit and the double screwdriver bit can be achieved through a set of devices.

Description

Technical Field

[0001] The utility model relates to the technical field of hand tools, and more specifically to a wrench-screwdriver integrated device which is universal for single and double screwdriver bits. Background Art

[0002] The impact wrench tightens bolts or nuts by applying the impact force generated by the driven rotating active impact member to the base as the output shaft. Wrenches are hand tools that workers often need to use during maintenance or production. Existing wrenches can clamp 6.35mm hexagonal screwdriver bits and 12.7mm socket wrenches at the same time, but can only clamp a single screwdriver bit or a double screwdriver bit when clamping a 6.35mm hexagonal screwdriver bit, and cannot be used for both screwdriver bits at the same time.

[0003] Therefore, how to solve the problem that the existing wrench cannot be used for two types of screwdriver bits at the same time is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a wrench-screwdriver integrated device which is universal for single and double screwdriver bits, so that the single screwdriver bit and the double screwdriver bit can be replaced and used at will.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A wrench-screwdriver integrated device universal for single and double screwdriver bits, comprising:

[0007] Aluminum head shell;

[0008] The spindle is arranged in the inner cavity of the aluminum head shell and extends to the outside of the aluminum head shell. The end of the spindle away from the aluminum head shell is provided with a mounting groove extending along its axial direction for mounting single and double screw bits, and a wrench sleeve is provided on the outer periphery of the mounting groove;

[0009] The locking assembly is arranged on the outer periphery of the main shaft and is located between the aluminum head shell and the wrench sleeve. The locking assembly is used to lock and loosen the single and double screwdriver bits.

[0010] Preferably, the locking assembly includes a movable sleeve insert arranged on the outer periphery of the main shaft, the movable sleeve insert has a first step surface and a second step surface with gradually increasing inner diameters, the first step surface abuts against the outer periphery of the main shaft, there is a gap between the second step surface and the main shaft, and the second step surface is arranged close to the aluminum head shell.

[0011] Preferably, the locking assembly also includes a steel ball and a spring for locking and releasing the single or double bit, the steel ball abutting against the spring, and when the single or double bit is not installed, the spring is in a compressed state and abuts against the steel ball so that the steel ball and the spring are both located on the inner periphery of the first step surface.

[0012] Preferably, a positioning flat square is provided on the outer periphery of the main shaft, and a sliding groove for movement of the steel ball and the spring is provided on the positioning flat square, and the sliding groove extends along the axial direction of the main shaft.

[0013] Preferably, the inner circumference of the movable sleeve insert is provided with a first flat square that cooperates with the positioning flat square, the first flat square is arranged on the first step surface, and a limiting cylinder is provided on the first flat square, the limiting cylinder is arranged close to the second step surface, and the connection between the limiting cylinder and the first flat square is transitioned through an arc surface.

[0014] Preferably, a positioning assembly is provided on the outer periphery of the movable sleeve insert to fix the axial and radial positions of the movable sleeve insert.

[0015] Preferably, the positioning assembly includes a movable sleeve and a fixed sleeve. The movable sleeve is arranged on the outer periphery of the movable sleeve insert and is clamped with the step portion of the outer periphery of the movable sleeve insert. The fixed sleeve is arranged on the outer periphery of the main shaft and is clamped and fixed with the inner periphery of the movable sleeve. A gap is left between the teeth on the fixed sleeve near one end of the aluminum head shell and the aluminum head shell.

[0016] Preferably, the end surface of the movable sleeve insert close to the aluminum head shell abuts against the limit retaining ring, and the limit retaining ring is arranged in an annular groove on the outer periphery of the main shaft.

[0017] Preferably, the limit retaining ring is pressed against the end surface of the fixing sleeve via a return spring.

[0018] Preferably, the main shaft is a T-shaped shaft, and the outer periphery of the main shaft is provided with double annular grooves for installing O-rings to seal the main shaft and the aluminum head shell, and the outer periphery of the main shaft is also provided with a seal for sealing the main shaft and the wrench socket.

[0019] The utility model provides an integrated wrench screwdriver device universal for single and double screwdriver bits, comprising an aluminum head shell, a spindle and a locking assembly. Specifically, the spindle is arranged in the inner cavity of the aluminum head shell and extends to the outside of the aluminum head shell. The power of the motor is transmitted through the spindle. The end of the spindle away from the aluminum head shell is provided with a mounting groove extending along its axial direction for mounting the single and double screwdriver bits. The single screwdriver bit or the double screwdriver bit is mounted on the spindle through the mounting groove, so that the power transmitted by the spindle is output through the single screwdriver bit or the double screwdriver bit. A wrench socket is provided on the outer periphery of the mounting groove. The locking assembly is arranged on the outer periphery of the spindle and is located between the aluminum head shell and the wrench socket. The locking assembly is axially positioned by the wrench socket. The locking assembly is used to lock and loosen the single and double screwdriver bits. With such an arrangement, the locking of the single screwdriver bit and the double screwdriver bit can be achieved through a set of devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the structure of a wrench-screwdriver integrated device that is universal for single and double screwdriver bits provided by the utility model;

[0022] Figure 2 This is an installation diagram of a wrench screwdriver integrated device universal for single and double screwdriver bits provided by the utility model for double screwdriver bits;

[0023] Figure 3 This is an installation diagram of the wrench-screwdriver integrated device universal for single and double screwdriver bits provided by the utility model for a single screwdriver bit;

[0024] Figure 4 An exploded view of the wrench-screwdriver integrated device universal for single and double screwdriver bits provided by the utility model;

[0025] Figure 5 A schematic diagram of the structure of the main shaft provided by the utility model;

[0026] Figure 6 The utility model is a schematic structural diagram of the movable sleeve insert provided by the utility model.

[0027] Reference numerals:

[0028] 1-Aluminum head shell;

[0029] 2-spindle, 21-positioning flat square, 22-sliding groove;

[0030] 3-wrench socket;

[0031] 4-movable sleeve insert, 41-first flat square, 42-limiting cylinder;

[0032] 5-Steel ball;

[0033] 6- Spring;

[0034] 7-Activity set;

[0035] 8-Fixed sleeve;

[0036] 9-limiting retaining ring;

[0037] 10-Return spring. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] The core of the utility model is to provide a wrench-screwdriver integrated device universal for single and double screwdriver bits, so that the single screwdriver bit and the double screwdriver bit can be replaced and used at will.

[0040] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 A wrench screwdriver integrated device universal for single and double screwdriver bits comprises an aluminum head shell 1, a spindle 2, a wrench sleeve 3 and a locking assembly.

[0041] Specifically, the spindle 2 is arranged in the inner cavity of the aluminum head shell 1 and extends to the outside of the aluminum head shell 1. The power of the motor is transmitted through the spindle 2. The end of the spindle 2 away from the aluminum head shell 1 is provided with a mounting groove extending along its axial direction for installing a single or double screwdriver bit. The single screwdriver bit or the double screwdriver bit is installed on the spindle 2 through the mounting groove, so that the power transmitted by the spindle 2 is output through the single screwdriver bit or the double screwdriver bit. A wrench socket 3 is provided on the outer periphery of the mounting groove. The locking assembly is arranged on the outer periphery of the spindle 2 and is located between the aluminum head shell 1 and the wrench socket 3. The locking assembly is axially positioned by the wrench socket 3. The locking assembly is used to lock and loosen the single or double screwdriver bits. With such a configuration, the locking of the single screwdriver bit and the double screwdriver bit can be achieved through a set of devices.

[0042] The integrated wrench-screwdriver device for single and double screwdriver bits arranged in the above manner can be used as a dual-purpose product of an impact wrench and an impact screwdriver, and can also realize application scenarios in which a single screwdriver bit and a double screwdriver bit can be used at the same time.

[0043] In the above embodiment, the locking assembly includes a movable sleeve insert 4 arranged on the outer periphery of the main shaft 2, the movable sleeve insert 4 has a first step surface and a second step surface with gradually increasing inner diameter, the first step surface abuts against the outer periphery of the main shaft 2, there is a gap between the second step surface and the main shaft 2, and the second step surface is arranged close to the aluminum head shell 1.

[0044] Furthermore, the locking assembly also includes a steel ball 5 and a spring 6 for locking and releasing the single or double screwdriver bits. The steel ball 5 abuts against the spring 6. When the single or double screwdriver bits are not installed, the spring 6 is in a compressed state and abuts against the steel ball 5 so that the steel ball 5 and the spring 6 are both located on the inner periphery of the first step surface.

[0045] It should be noted that the spring 6 and the steel ball 5 can be limited by the movable sleeve 4. The steel ball 5 and the spring 6 are located on the inner side of the first step surface along the radial direction of the main shaft 2. The main shaft 2 is circumferentially provided with a groove body with a through hole for installing the steel ball 5 and the spring 6. The steel ball 5 corresponds to the through hole, and the spring 6 corresponds to the groove body. When the single or double screwdriver bits are not installed, the spring 6 abuts against the steel ball 5 so that the steel ball 5 is on the main shaft 2. When the single or double screwdriver bits are installed, the circumferential surface of the single or double screwdriver bits pushes the steel ball 5, and the steel ball 5 applies an axial compression force to the spring 6 to compress the spring 6, thereby disengaging the steel ball 5 from the through hole, so that the single or double screwdriver bits can be quickly inserted into the installation slot and locked.

[0046] Among them, the steel balls 5 and springs 6 can be set as one group to lock the single and double screwdriver bits, or two groups can be set to lock the single and double screwdriver bits. There is no limitation to this, as long as the above-mentioned technical effect can be achieved.

[0047] Please refer to Figure 5 A positioning flat square 21 is provided on the outer periphery of the main shaft 2 , and a sliding groove 22 for movement of the steel ball 5 and the spring 6 is provided on the positioning flat square 21 , and the sliding groove 22 extends along the axial direction of the main shaft 2 .

[0048] It should be noted that, in this embodiment, a positioning flat square 21 is provided on the outer periphery of the main shaft 2 for positioning, a sliding groove 22 is provided on the positioning flat square 21, and the steel ball 5 and the spring 6 are installed in the sliding groove 22 and move along the axial direction of the main shaft 2, thereby realizing the locking and loosening of single and double screw bits.

[0049] There is no limitation on the number and specifications of the positioning flat squares 21 as long as the above technical effects can be achieved.

[0050] Please refer to Figure 6 The inner circumference of the movable sleeve insert 4 is provided with a first flat square 41 that cooperates with the positioning flat square 21. The first flat square 41 is arranged on the first step surface, and a limiting cylinder 42 is provided on the first flat square 41. The limiting cylinder 42 is arranged close to the second step surface, and the connection between the limiting cylinder 42 and the first flat square 41 is transitioned through an arc surface.

[0051] It can be understood that the spindle 2 is a T-shaped shaft, and the sliding groove 22 is arranged on the positioning flat square 21 processed on the spindle 2. The positioning flat square 21 and the sliding groove 22 provide suitable movement space for the steel ball 5 and the spring 6. The movable sleeve 4 adopts a powder metallurgy part, and provides a first flat square 41 that cooperates with the spindle 2 and a limiting cylinder 42 that prevents the steel ball 5 and the spring 6 from deviating from a certain radial space. The limiting cylinder 42 provides a corresponding release space for the single and double screwdriver bits to be inserted into the spindle 2 and the steel ball 5 is not in the self-locking groove of the single and double screwdriver bits. At the same time, under the limiting action of the limiting cylinder 42, the spring 6 can reset the steel ball 5 to the sliding groove 22 after the single and double screwdriver bits are inserted into the spindle 2, thereby realizing the self-locking function of the single and double screwdriver bits.

[0052] On the basis of the above-mentioned embodiment, a positioning assembly is provided on the outer periphery of the movable sleeve insert 4 to fix the axial and radial positions of the movable sleeve insert 4 .

[0053] It should be noted that the positioning assembly is sleeved on the outer circumference of the movable sleeve insert 4 to perform radial positioning on the movable sleeve insert 4 so as to achieve positioning of the steel ball 5 and the spring 6 by the movable sleeve insert 4 .

[0054] In the above embodiment, the positioning assembly includes a movable sleeve 7 and a fixed sleeve 8. The movable sleeve 7 is arranged on the outer periphery of the movable sleeve insert 4 and is clamped with the step portion of the outer periphery of the movable sleeve insert 4. The fixed sleeve 8 is arranged on the outer periphery of the main shaft 2 and is clamped and fixed with the inner periphery of the movable sleeve 7. A gap is left between the teeth on one end of the fixed sleeve 8 close to the aluminum head shell 1 and the aluminum head shell 1.

[0055] It can be understood that the steel ball 5 can slide back and forth along the axis in the sliding groove 22 under the push of the spring 6. When the screwdriver bit is inserted into the installation groove, the tail end of the screwdriver bit pushes the steel ball 5, and the steel ball 5 pushes the spring 6 to move, so that the steel ball 5 is separated from the radial positioning of the movable sleeve insert 4, thereby achieving the quick insertion purpose of the hexagonal screwdriver bit into the installation groove for locking and clamping. When the hexagonal screwdriver bit is pulled out, the steel ball 5 will be driven forward by the locking steel ball 5 positioning groove on the screwdriver bit. After moving forward, the steel ball 5 will be radially positioned by the movable sleeve insert 4, thereby achieving the purpose of locking the screwdriver bit so that it will not fall off in any state when the machine is working or the machine is stopped.

[0056] In the process of realizing the common use of single-bit and double-bit bit heads, the positions of the locking groove of the single-bit bit and the locking groove of the double-bit bit heads are different. When locking the double-bit bit heads, the steel ball 5 just falls into the locking groove of the bit heads to realize the locking and fixation of the bit heads. When locking the single-bit bit heads, the steel ball 5 is outside the bit heads in the working state and does not have a locking effect. When the bit heads in the non-working state are about to fall out, the steel ball 5 will be displaced through the locking groove of the bit heads under the thrust of the spring 6 to the radial fixing range of the movable sleeve insert 4 to realize the locking of the single-bit bit heads.

[0057] As a preferred embodiment, the end surface of the movable sleeve insert 4 close to the aluminum head shell 1 abuts against the limit ring 9, and the limit ring 9 is arranged in the annular groove on the outer periphery of the main shaft 2.

[0058] It should be noted that the limit ring 9 can be provided to prevent the movable sleeve insert 4 from being separated from the main shaft 2 .

[0059] In the above situation, the limit ring 9 is pressed against the end surface of the fixing sleeve 8 via the return spring 10 .

[0060] It is understandable that the reset spring 10 can ensure that the movable insert 4 is reset to the free position after the bit is unlocked or locked.

[0061] In the above embodiment, the spindle 2 is a T-shaped shaft, and the outer periphery of the spindle 2 is provided with a double annular groove for installing an O-ring to seal the spindle 2 and the aluminum head shell 1. The outer periphery of the spindle 2 is also provided with a seal for sealing the spindle 2 and the wrench socket 3.

[0062] It should be noted that, in the present embodiment, the main shaft 2 and the wrench sleeve 3 are fixed and sealed by means of a seal and a retaining spring, but in actual life, there is no limitation to this as long as the above-mentioned technical effect can be achieved.

[0063] In summary, the integrated wrench and screwdriver device for single and double screwdriver bits provided by the utility model can be used as a dual-purpose product of an impact wrench and an impact screwdriver, realizing an application scenario of a multi-purpose clamping structure in which a single screwdriver bit and a double screwdriver bit can be used simultaneously on a clamping system, and can achieve fixed clamping of a 12.7mm or 19mm wrench socket 3 while clamping a 6.35mm hexagonal screwdriver bit. At the same time, when using a 6.35mm hexagonal screwdriver bit, the same chuck clamping structure can achieve application scenarios of both single and double screwdriver bits.

[0064] When clamping a 6.35mm hexagonal screwdriver bit, it has a quick-insertion function, that is, the hexagonal screwdriver bit can be directly inserted into the installation groove for locking and clamping with one hand without moving the movable sleeve 7. At the same time, the structure has the function of replacing a single screwdriver bit and a double screwdriver bit at will. The structure is reliable, the clamping is stable, and the clamping structure and the screwdriver bit will not be damaged.

[0065] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0066] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0067] The above is a detailed introduction to a wrench screwdriver integrated device for single and double screwdriver bits provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A wrench-screwdriver integrated device universal for single and double screwdriver bits, characterized in that: include: Aluminum head shell (1); A main shaft (2) is arranged in the inner cavity of the aluminum head shell (1) and extends to the outside of the aluminum head shell (1); an end of the main shaft (2) away from the aluminum head shell (1) is provided with a mounting groove extending along its axial direction and used for mounting single or double screw bits; a wrench sleeve (3) is provided on the outer periphery of the mounting groove; A locking assembly is arranged on the outer periphery of the main shaft (2) and is located between the aluminum head shell (1) and the wrench sleeve (3), and the locking assembly is used to lock and release the single or double screwdriver bits.

2. The integrated wrench and screwdriver device for single and double screwdriver bits according to claim 1, characterized in that: The locking assembly comprises a movable sleeve insert (4) arranged on the outer periphery of the main shaft (2), the movable sleeve insert (4) having a first step surface and a second step surface with gradually increasing inner diameters, the first step surface abutting against the outer periphery of the main shaft (2), a gap between the second step surface and the main shaft (2), and the second step surface being arranged close to the aluminum head shell (1).

3. The integrated wrench and screwdriver device for single and double screwdriver bits according to claim 2, characterized in that: The locking assembly further comprises a steel ball (5) and a spring (6) for locking and releasing the single or double screwdriver bits. The steel ball (5) abuts against the spring (6). When the single or double screwdriver bits are not installed, the spring (6) is in a compressed state and abuts against the steel ball (5), so that the steel ball (5) and the spring (6) are both located on the inner periphery of the first step surface.

4. The integrated wrench and screwdriver device for single and double screwdriver bits according to claim 3, characterized in that: A positioning flat square (21) is provided on the outer periphery of the main shaft (2), and a sliding groove (22) for movement of the steel ball (5) and the spring (6) is provided on the positioning flat square (21), and the sliding groove (22) extends axially along the main shaft (2).

5. The integrated wrench-screwdriver device for single and double screwdriver bits according to claim 4, characterized in that: The inner circumference of the movable sleeve insert (4) is provided with a first flat square (41) that cooperates with the positioning flat square (21); the first flat square (41) is arranged on the first step surface, and a limiting cylinder (42) is provided on the first flat square (41); the limiting cylinder (42) is arranged close to the second step surface, and the connection between the limiting cylinder (42) and the first flat square (41) is transitioned through an arc surface.

6. The integrated wrench-screwdriver device for single and double screwdriver bits according to claim 5, characterized in that: The outer periphery of the movable sleeve insert (4) is provided with a positioning assembly to fix the axial and radial positions of the movable sleeve insert (4).

7. The integrated wrench-screwdriver device for use with single and double screwdriver bits according to claim 6, characterized in that: The positioning assembly includes a movable sleeve (7) and a fixed sleeve (8), wherein the movable sleeve (7) is arranged on the outer periphery of the movable sleeve (7) insert (4) and is clamped with the step portion of the outer periphery of the movable sleeve (7) insert (4), and the fixed sleeve (8) is arranged on the outer periphery of the main shaft (2) and is clamped and fixed with the inner periphery of the movable sleeve (7), and a gap is left between the teeth of the fixed sleeve (8) on one end close to the aluminum head shell (1) and the aluminum head shell (1).

8. The integrated wrench-screwdriver device for use with single and double screwdriver bits according to claim 7, characterized in that: The insert (4) of the movable sleeve (7) is in contact with a limit ring (9) near the end surface of the aluminum head shell (1), and the limit ring (9) is arranged in an annular groove on the outer periphery of the main shaft (2).

9. The integrated wrench-screwdriver device for use with single and double screwdriver bits according to claim 8, characterized in that: The limit retaining ring (9) is pressed tightly against the end surface of the fixing sleeve (8) via a return spring (10).

10. The integrated wrench-screwdriver device for use with single and double screwdriver bits according to any one of claims 1 to 9, characterized in that: The main shaft (2) is a T-shaped shaft. The outer periphery of the main shaft (2) is provided with a double annular groove for installing an O-ring to seal the main shaft (2) and the aluminum head shell (1). The outer periphery of the main shaft (2) is also provided with a sealing member for sealing the main shaft (2) and the wrench sleeve (3).

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