screwdriver

Abstract

The present invention relates to the technical field of hand tools, and in particular to a screwdriver. The screwdriver includes a cutter head, a handle and a rotating connecting piece, the cutter head and the handle are connected by the rotating connecting piece, the cross axis includes a first connecting axis and a second connecting axis that are fixedly connected and perpendicular to each other, one end of the front hinge body and the rear hinge body are respectively corresponding to the first connecting axis and the second connecting axis for rotation connection, and the other end of the front hinge body and the rear hinge body are respectively connected to the cutter head and the handle; by rotating the connecting piece, the cutter head and the handle can be bent at a certain angle, and the handle can be rotated to transmit the torque generated by the handle to the cutter head, so that the cutter head rotates around its own axis to achieve the screwing of the fastener, so that when screwing the fastener that is blocked from above, the cutter head can be extended to the top of the fastener by bending the handle and the cutter head, and the bent handle avoids the obstruction from above and extends out, so that the fastener blocked from above can be conveniently and quickly tightened and disassembled.

Description

Technical Field

[0001] The invention relates to the technical field of hand tools, in particular to a screwdriver. Background Art

[0002] The existing screwdriver has a fixed connection between the blade head and the handle, and can only act on the fasteners without any cover above. As the complexity of mechanical structures increases, more and more fasteners are hidden deep inside the mechanical structures, and the top of the fasteners is covered by other parts. When tightening and screwing these fasteners, it is necessary to remove other parts above the fasteners first, which greatly increases the difficulty of construction and affects the construction efficiency. Therefore, a fastening tool is needed, which has a certain degree of flexibility and can be bent at a certain angle so that the blade head of the fastening tool can be inserted into the position where the fastener is located. Summary of the invention

[0003] The object of the present invention is to provide a screwdriver to solve the technical problem in the prior art that the handle and the blade of the screwdriver cannot be bent, and the fasteners with obstructions above cannot be fastened and removed conveniently and quickly.

[0004] The present invention provides a screwdriver, comprising a tool head, a handle and a rotating connecting piece; the rotating connecting piece comprises a front hinge, a rear hinge and a cross axis, the cross axis comprises a first connecting axis and a second connecting axis which are perpendicular to each other and fixedly connected; one end of the front hinge is rotatably connected to the first connecting axis and can rotate around the axis of the first connecting axis; one end of the rear hinge is rotatably connected to the second connecting axis and can rotate around the axis of the second connecting axis; the tool head is connected to one end of the front hinge away from the cross axis, and the handle is connected to one end of the rear hinge away from the cross axis.

[0005] Furthermore, the rotating connecting member also includes two push rods; the two push rods are respectively located on both sides of the cross axis, and are respectively arranged corresponding to the front hinge body and the rear hinge body; a blind hole is opened on the end surface of the front hinge body and the rear hinge body facing the cross axis, one end of the push rod is located in the corresponding blind hole, and the other end of the push rod is abutted against the middle connecting part of the cross axis; elastic parts are also respectively arranged in the blind holes on the front hinge body and the rear hinge body, and the two ends of the elastic parts are respectively abutted against the bottom wall of the corresponding blind hole and the end surface of the push rod located in the corresponding blind hole.

[0006] Furthermore, the edges of the end surfaces of the two push rods facing the cross axis are both arc-shaped.

[0007] Furthermore, limiting bosses are provided on the inner wall surfaces of the blind holes on the front hinge body and the rear hinge body, and clamping parts are provided on the outer walls of one end of the two push rods located in the corresponding blind holes, and the clamping parts can abut against the corresponding limiting bosses.

[0008] Furthermore, it also includes an intermediate connecting rod, one end of which is connected to the rear hinge body, and the other end of which is connected to the handle.

[0009] Furthermore, the rotating connecting piece is provided between the middle connecting rod and the handle, and the middle connecting rod and the handle are connected via the rotating connecting piece.

[0010] Furthermore, there are multiple intermediate connecting rods, and the rotating connecting member is provided between any two adjacent intermediate connecting rods among the multiple intermediate connecting rods, so as to connect the multiple intermediate connecting rods in sequence, and any two adjacent intermediate connecting rods can rotate relative to each other.

[0011] Furthermore, two corresponding first connecting ears are arranged on the end surface of one end of the front hinge body facing the cross axis, and the two first connecting ears are each provided with a first connecting through hole; two corresponding second connecting ears are arranged on the end surface of one end of the rear hinge body facing the cross axis, and the two second connecting ears are each provided with a second connecting through hole; the two ends of the first connecting axis can respectively pass through the two first connecting through holes, and the two ends of the second connecting axis can respectively pass through the two second connecting through holes.

[0012] Furthermore, a first connecting portion is provided on an end surface of the front hinge body away from the cross axis, and the first groove adapted to the connecting portion is provided on an end surface of the cutter head and the intermediate connecting rod connected to the front hinge body;

[0013] or,

[0014] The first groove is formed on the end surface of the front hinge away from the cross axis, and the first connecting portion matched with the first groove is formed on the end surface of the cutter head or the intermediate connecting rod connected to the front hinge.

[0015] Furthermore, a second groove is provided on an end surface of the rear hinge body away from the cross axis, and a second connecting portion adapted to the second groove is provided on an end surface of the handle and the middle connecting rod connected to the rear hinge body;

[0016] or,

[0017] The second connecting portion is arranged on the end surface of the rear hinge body away from the cross axis, and the second groove matched with the second connecting portion is arranged on the end surface of the handle and the middle connecting rod connected to the rear hinge body.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The screwdriver provided by the present invention comprises a bit, a handle and a rotating connection member, wherein the bit and the handle are connected via the rotating connection member; the rotating connection member comprises a front hinge, a rear hinge and a cross shaft, wherein the cross shaft comprises two mutually perpendicular and fixedly connected first and second connecting shafts, wherein one end of the front hinge is rotationally connected to the first connecting shaft, and one end of the rear hinge is rotationally connected to the second connecting shaft, so that the front hinge or the rear hinge can rotate around the axis direction of its corresponding connecting shaft, so that the front hinge and the rear hinge can be bent to form a certain angle. The bit of the screwdriver is fixedly connected to one end of the front hinge away from the cross shaft, and the handle of the screwdriver is fixedly connected to one end of the rear hinge away from the cross shaft, so that the bit and the handle of the screwdriver are rotationally connected together via the rotating connection member, and the bit and the handle can be bent to a certain angle. When the handle and the cutter head are located on the same axis, rotating the handle can transfer the torque of the handle to the cutter head, so that the cutter head can also rotate around the same axis to complete the screwing of the fastener; and when the handle and the cutter head are bent at a certain angle, the handle and the cutter head are connected by a rotating connecting piece, and rotating the handle causes the handle to rotate around its own axis, and can transfer the torque generated by the handle to the cutter head, so that the cutter head rotates around its own axis, thereby realizing the screwing of the fastener and completing the removal or tightening of the fastener.

[0020] Since the blade head and handle of an ordinary screwdriver are fixedly connected and form a straight line, when it is necessary to remove or tighten a fastener that is blocked from above, the space above the fastener is limited and cannot accommodate an ordinary screwdriver to act vertically on the fastener. However, when the screwdriver of the present application is used to screw the fastener in this situation, the handle can be bent at a certain angle relative to the blade head so that only the blade head of the screwdriver is inserted into the position of the fastener and acts vertically on the fastener, and the bent handle can extend out to avoid the obstruction above. Then, the handle is rotated to rotate around its own axis, and the torque generated by the rotation of the handle is transmitted to the blade head by rotating the connecting piece, so that the blade head can rotate around its own axis direction to complete the tightening or removal of the fastener, thereby conveniently and quickly tightening and removing the fastener that is blocked from above. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of a screwdriver provided by an embodiment of the present invention in a first state;

[0023] Figure 2 A schematic diagram of the structure of a screwdriver in a second state provided by an embodiment of the present invention;

[0024] Figure 3 A schematic structural diagram of a rotating connecting member of a screwdriver provided by an embodiment of the present invention from a first viewing angle;

[0025] Figure 4 A cross-sectional view of a rotating connecting member of a screwdriver provided by an embodiment of the present invention in a vertical state;

[0026] Figure 5 A cross-sectional view of a rotating connecting member of a screwdriver provided by an embodiment of the present invention in a bent state.

[0027] Reference numerals:

[0028] 1-blade head, 2-handle, 3-rotating connecting piece, 31-front hinge, 32-rear hinge, 33-cross shaft, 34-top rod, 35-elastic piece, 36-first connecting ear, 37-second connecting ear, 38-first connecting part, 39-second groove, 4-middle connecting rod. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0030] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0031] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Refer to the following Figures 1 to 5 A screwdriver according to some embodiments of the present application is described.

[0035] The present application provides a screwdriver, such as Figure 1 and Figures 3 to 5 As shown, it includes a cutter head 1, a handle 2 and a rotating connection member 3; the rotating connection member 3 includes a front hinge 31, a rear hinge 32 and a cross shaft 33; the cross shaft 33 includes a first connecting shaft and a second connecting shaft that are perpendicular to each other and fixedly connected, one end of the front hinge 31 is rotatably connected to the first connecting shaft and can rotate around the axis of the first connecting shaft; one end of the rear hinge 32 is rotatably connected to the second connecting shaft and can rotate around the axis of the second connecting shaft; the cutter head 1 is connected to one end of the front hinge 31 away from the cross shaft 33, and the handle 2 is connected to one end of the rear hinge 32 away from the cross shaft 33.

[0036] The screwdriver provided in the present application includes a cutter head 1, a handle 2 and a rotating connecting member 3, wherein the cutter head 1 and the handle 2 are connected via the rotating connecting member 3; the rotating connecting member 3 includes a front hinge 31, a rear hinge 32 and a cross shaft 33, wherein the cross shaft 33 includes two first connecting shafts and a second connecting shaft that are fixedly connected and perpendicular to each other, wherein one end of the front hinge 31 is connected to the first connecting shaft of the cross shaft 33, and the front hinge 31 can rotate around the axis of the first connecting shaft; one end of the rear hinge 32 is rotatably connected to the second connecting shaft of the cross shaft 33, and the rear hinge 32 can rotate around the axis of the second connecting shaft; therefore, by rotating the front hinge 31 or the rear hinge 32 around the axis direction of its corresponding connecting shaft, the front hinge 31 and the rear hinge 32 can be bent to form a certain angle. The screwdriver bit 1 is fixedly connected to one end of the front hinge 31 away from the cross axis 33, and the screwdriver handle 2 is fixedly connected to one end of the rear hinge 32 away from the cross axis 33, so that the screwdriver bit 1 and the handle 2 can be connected together by rotating the connecting piece 3, and the bit 1 and the handle 2 can be bent at a certain angle.

[0037] When the handle 2 and the cutter head 1 are located on the same axis, the handle 2 can be rotated to transmit the torque of the handle 2 to the cutter head 1, so that the cutter head 1 can also rotate around the same axis to complete the screwing of the fastener; and when the handle 2 and the cutter head 1 are bent at a certain angle, the handle 2 and the cutter head 1 are connected through the rotating connecting piece 3, and the handle 2 is rotated to rotate the handle 2 around its own axis, and the torque generated by the handle 2 can be transmitted to the cutter head 1, so that the cutter head 1 can rotate around its own axis, thereby realizing the screwing of the fastener and completing the removal or tightening of the fastener.

[0038] It should be noted that the rotating connection member 3 of the present application can be a cross-axis universal joint, which changes the direction of the transmission axis through the cross-axis universal joint to transmit the torque of the handle 2 to the cutter head 1, and the cutter head 1 can rotate around its own axis.

[0039] Since the blade head 1 and handle 2 of an ordinary screwdriver are fixedly connected and form a straight line, when it is necessary to remove or tighten a fastener that is blocked from above, the space above the fastener is limited and cannot accommodate an ordinary screwdriver to act vertically on the fastener; when the screwdriver of the present application is used to screw the fastener in this case, the handle 2 can be bent at a certain angle relative to the blade head 1, so that only the blade head 1 of the screwdriver is extended to the position of the fastener and acts vertically on the fastener, and the bent handle 2 can avoid the obstruction above and extend out; then the handle 2 is rotated to rotate around its own axis, and the torque generated by the rotation of the handle 2 is transmitted to the blade head 1 by rotating the connecting member 3, so that the blade head 1 can rotate around its own axis direction to complete the tightening or removal of the fastener, thereby conveniently and quickly tightening and removing the fastener that is blocked from above.

[0040] In this embodiment, if Figures 3 to 5 As shown, the front hinge 31 and the rear hinge 32 of the rotating connecting member 3 are respectively provided with a push rod 34, through which the bent blade head 1 and the handle 2 can be restored to the initial vertical connection state when there is no external force.

[0041] Blind holes are provided on the end surfaces of the front hinge body 31 and the rear hinge body 32 facing the cross shaft 33 along their respective axial directions, and an elastic member 35 and a push rod 34 are respectively installed in the blind holes of the front hinge body 31 and the rear hinge body 32; one ends of the two push rods 34 are respectively located in the corresponding blind holes, and the other ends of the two push rods 34 can respectively abut against the two side surfaces of the middle connecting part of the cross shaft 33; the two ends of the elastic member 35 can respectively abut against the bottom wall of the corresponding blind hole and the end of the push rod 34 located in the blind hole.

[0042] Relying on the elasticity of the corresponding elastic member 35, the elastic force of the elastic member 35 acts on the corresponding top rod 34, so that the two top rods 34 are tightly against the cross shaft 33. When the handle 2 and the blade head 1 are bent by external force, the elastic member 35 located in the blind hole is compressed. When the handle 2 and the blade head 1 are not acted by external force, under the action of the elastic force, the blade head 1 and the handle 2 can automatically restore the initial vertical connection state, which is convenient for storage. Preferably, the elastic member 35 is a spring.

[0043] In this embodiment, if Figure 4 and Figure 5 As shown, the edge of the end surface of the two push rods 34 facing one end of the cross shaft 33 is in an arc shape, so that when the handle 2 and the blade head 1 need to be turned to a certain angle, the cross shaft 33 can be bent along the curvature of the edge of the push rod 34 of one of the front hinges 31 or the rear hinges 32, so that the front hinge 31 and the rear hinge 32 can be bent more easily to form an angle between the two; when resetting is required, in the absence of external force, the cross shaft 33 can also smoothly return to the initial vertical state along the curvature of the edge under the action of the elastic force of the elastic member 35.

[0044] In this embodiment, if Figure 4 and Figure 5 As shown, limiting bosses are provided on the inner walls of the blind holes on the front hinge body 31 and the rear hinge body 32, and clamping parts are provided on the outer walls of one end of the two push rods 34 located in the corresponding blind holes. The clamping parts of the push rods 34 can abut against the limiting bosses in the corresponding blind holes, thereby preventing the push rods 34 from escaping from the corresponding blind holes.

[0045] In this embodiment, if Figure 2As shown, the screwdriver also includes an intermediate connecting rod 4, which is located between the handle 2 and the blade head 1. One end of the intermediate connecting rod 4 is connected to the blade head 1 through a rotating connecting piece 3, and the other end of the intermediate connecting rod 4 is connected to the handle 2, thereby extending the structural length of the screwdriver through the intermediate connecting rod 4; when tightening a fastener located deeper, the blade head 1 of the screwdriver can reach the fastener located deeper by adding an intermediate connecting rod 4 of a suitable length.

[0046] In this embodiment, if Figure 2 As shown, when an intermediate connecting rod 4 is provided between the handle 2 and the cutter head 1, the intermediate connecting rod 4 and the cutter head 1 are connected via a rotating connecting member 3, which enables the intermediate connecting rod 4 and the cutter head 1 to bend at a certain angle, and the axial rotation of the handle 2 and the intermediate connecting rod 4 can be transmitted to the cutter head 1 via the rotating connecting member 3, so that the cutter head 1 rotates along its own axial direction.

[0047] The connection between the intermediate connecting rod 4 and the handle 2 can also be connected by rotating the connecting piece 3, so that the intermediate connecting rod 4 and the handle 2 can also be bent at a certain angle, thereby realizing double bending of the screwdriver body, which can enable the screwdriver of the present application to act on fasteners with more complex positions, so that when screwing fasteners with complex positions and / or deeper positions, the cutter head 1 can more easily reach the position of the fastener, rotate the handle 2, and transmit the axial rotation of the handle 2 to the intermediate connecting rod 4 and the cutter head 1 in turn by rotating the connecting piece 3, so that the intermediate connecting rod 4 and the cutter head 1 can both rotate along their own axial direction, thereby completing the installation and disassembly of the fastener conveniently and quickly.

[0048] In this embodiment, if Figure 2 As shown, a plurality of intermediate connecting rods 4 can be arranged between the handle 2 and the cutter head 1, and a rotating connecting member 3 is arranged between any two of the plurality of intermediate connecting rods 4, and the plurality of intermediate connecting rods 4 are connected in sequence through the rotating connecting member 3, so that any two adjacent intermediate connecting rods 4 can be bent to each other to form a certain angle; thereby, not only the structural length of the screwdriver is further extended by the plurality of intermediate connecting rods 4, but also the body of the screwdriver can be bent multiple times, and the torque generated by the rotation of the handle 2 is transmitted downward to the cutter head 1 in sequence, so that fasteners with more complex positions and deeper positions can be installed and disassembled.

[0049] In this embodiment, if Figures 3 to 5As shown, two corresponding first connecting ears 36 are arranged on the end surface of one end of the front hinge body 31 facing the cross shaft 33, and the two first connecting ears 36 are each provided with a first connecting through hole, and the two first connecting through holes are located on the same axis; the two ends of the first connecting axis of the cross shaft 33 can respectively pass through the first connecting holes located on the two first connecting ears 36, thereby connecting the front hinge body 31 and the cross shaft 33 together, and allowing the front hinge body 31 to rotate around the axis of the first connecting axis.

[0050] Similarly, two corresponding second connecting ears 37 are arranged on the end surface of the rear hinge body 32 facing the cross shaft 33, and the two second connecting ears 37 are each provided with a second connecting through hole, and the two second connecting through holes are located on the same axis; the two ends of the second connecting shaft of the cross shaft 33 can respectively pass through the second connecting holes located on the two second connecting ears 37, thereby connecting the rear hinge body 32 and the cross shaft 33 together, and enabling the rear hinge body 32 to rotate around the axis of the second connecting shaft.

[0051] Both the front hinge 31 and the rear hinge 32 can rotate around the axis of the corresponding connecting shaft, so that the front hinge 31 and the rear hinge 32 can be bent at a certain angle; preferably, the bendable angle range is 0°-45°. When the bending angle is 0°, the front hinge 31 and the rear hinge 32 are in a vertically connected state, and the two are located on the same axis; the maximum bendable angle is 45°. When bent to 45°, the connecting ear on the front hinge 31 or the rear hinge 32 will abut against one end of the hinge on the opposite side, so that the bending angle between the two will not exceed 45°, avoiding hysteresis or jamming during the screwing of the fastener when the bending angle exceeds 45°.

[0052] In this embodiment, if Figure 3 As shown, the handle 2, the middle connecting rod 4 and the cutter head 1 are all connected by a rotating connecting member 3, which can realize bending between the two and transmission of torque;

[0053] The end of the front hinge 31 away from the cross axis 33 is a connecting end, and a first connecting portion 38 is arranged on the end face of the connecting end. A first groove adapted to the first connecting portion 38 is arranged on the end face of one end of the cutter head 1 or the intermediate connecting rod 4 connected to the front hinge 31. The first connecting portion 38 can be inserted into the first groove and have an interference fit with the first connecting portion 38, so that the cutter head 1 or the intermediate connecting rod 4 is tightly connected to the front hinge 31.

[0054] Alternatively, a first groove is provided on the end face of the connecting end of the front hinge 31, and a first connecting portion 38 adapted to the first groove is provided on one end face of the cutter head 1 or the intermediate connecting rod 4 connected to the front hinge 31, and then the cutter head 1 or the intermediate connecting rod 4 is tightly connected to the front hinge 31 through the interference fit between the first connecting portion 38 and the first groove.

[0055] In this embodiment, if Figure 3 As shown, one end of the rear hinge 32 away from the cross axis 33 is a connecting end, and a second connecting portion is arranged on the end surface of the connecting end. A second groove 39 adapted to the second connecting portion is arranged on one end surface of the handle 2 or the intermediate connecting rod 4 connected to the rear hinge 32. The second connecting portion can be inserted into the second groove 39 and has an interference fit with the second connecting portion, so that the handle 2 or the intermediate connecting rod 4 is tightly connected to the rear hinge 32.

[0056] Alternatively, a second groove 39 is provided on the end surface of the connecting end of the rear hinge body 32, and a second connecting portion adapted to the second groove 39 is provided on one end surface of the handle 2 or the intermediate connecting rod 4 connected to the rear hinge body 32, and then the handle 2 or the intermediate connecting rod 4 is tightly connected to the rear hinge body 32 through the interference fit between the second connecting portion and the second groove 39.

[0057] It should be noted that the mutual connections between the cutter head 1, handle 2, connecting rod and rotating connecting member 3 of the present application are all detachable connections, and the interface types are all adapted, the second connecting part can be inserted into the first groove, and the first connecting part 38 can also be inserted into the second groove 39; the handle 2 can be directly connected to the cutter head 1, and the handle 2 can be connected to the cutter head 1 through the rotating connecting member 3; when one or more intermediate connecting rods 4 are added between the handle 2 and the cutter head 1, the handle 2 can be directly connected to the intermediate connecting tube at the end, and can also be connected through the rotating connecting member 3.

[0058] The cutter head 1 can be replaced into any form to adapt to the construction work on different types of fasteners; at the same time, when the intermediate connecting rod 4 is used, the intermediate connecting rod 4 can also be replaced into different lengths to adapt to the construction of fasteners of different depths.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A screwdriver, It is characterized in that It includes a cutter head, a handle and a rotating connecting piece; The rotating connecting member includes a front hinge, a rear hinge and a cross shaft, and the cross shaft includes a first connecting shaft and a second connecting shaft that are perpendicular to each other and fixedly connected; one end of the front hinge is rotatably connected to the first connecting shaft and can rotate around the axis of the first connecting shaft; one end of the rear hinge is rotatably connected to the second connecting shaft and can rotate around the axis of the second connecting shaft; The blade head is connected to one end of the front hinge body away from the cross axis, and the handle is connected to one end of the rear hinge body away from the cross axis; The rotating connecting member further comprises two top rods, which are respectively located on both sides of the cross axis and are respectively arranged corresponding to the front hinge body and the rear hinge body; A blind hole is provided on the end surface of the front hinge body and the rear hinge body facing the cross shaft, one end of the push rod is located in the corresponding blind hole, and the other end of the push rod is against the middle connecting part of the cross shaft; The blind holes on the front hinge body and the rear hinge body are also provided with elastic members, respectively, and the two ends of the elastic members are respectively against the bottom wall of the corresponding blind hole and the end surface of one end of the top rod located in the corresponding blind hole; The edges of the end surfaces of the two push rods facing the cross shaft are both in arc shape; Limiting bosses are arranged on the inner wall surfaces of the blind holes on the front hinge body and the rear hinge body, and clamping parts are arranged on the outer walls of one end of the two push rods corresponding to the blind holes, and the clamping parts can abut against the corresponding limiting bosses.

2. The screwdriver according to claim 1, It is characterized in that It also includes an intermediate connecting rod, one end of which is connected to the rear hinge body, and the other end of which is connected to the handle.

3. The screwdriver according to claim 2, It is characterized in that The rotating connecting piece is arranged between the middle connecting rod and the handle, and the middle connecting rod and the handle are connected through the rotating connecting piece.

4. The screwdriver according to claim 2, It is characterized in that There are multiple intermediate connecting rods, and the rotating connecting member is arranged between any two adjacent intermediate connecting rods among the multiple intermediate connecting rods, so as to connect the multiple intermediate connecting rods in sequence, and any two adjacent intermediate connecting rods can rotate relative to each other.

5. The screwdriver according to claim 1, It is characterized in that Two corresponding first connecting ears are arranged on one end surface of the front hinge body facing the cross axis, and a first connecting through hole is opened on the two first connecting ears; Two corresponding second connecting ears are arranged on one end surface of the rear hinge body facing the cross axis, and a second connecting through hole is opened on each of the two second connecting ears; Both ends of the first connecting shaft can pass through the two first connecting through holes respectively, and both ends of the second connecting shaft can pass through the two second connecting through holes respectively.

6. The screwdriver according to claim 2, It is characterized in that A first connecting portion is provided on an end surface of the front hinge body away from the cross axis, and a first groove matching the connecting portion is provided on an end surface of the cutter head and the intermediate connecting rod connected to the front hinge body; or, The first groove is formed on the end surface of the front hinge away from the cross axis, and the first connecting portion matched with the first groove is formed on the end surface of the cutter head or the intermediate connecting rod connected to the front hinge.

7. The screwdriver according to claim 2, It is characterized in that A second groove is provided on the end surface of the rear hinge body away from the cross axis, and a second connecting portion adapted to the second groove is provided on the end surface of the handle and the middle connecting rod connected to the rear hinge body; or, The second connecting portion is arranged on the end surface of the rear hinge body away from the cross axis, and the second groove matched with the second connecting portion is arranged on the end surface of the handle and the middle connecting rod connected to the rear hinge body.

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