CN206663091U - Screwdriver antioverloading joint, screw knife assembly and screwdriver - Google Patents

Abstract

The utility model relates to a screwdriver anti-overload connector, a screwdriver assembly and a screwdriver, which belong to the field of mechanical tools. The screwdriver includes a grip part and a screwdriver assembly connected to each other. Rod, joint, elastic piece and limit block. One end of the connecting rod is connected to the inside of the joint, and the other end is used to connect the screwdriver head. The connecting rod is provided with a groove. Both the elastic piece and the limit block are arranged in the joint. One end of one end is against the inner wall of the joint, the other end is against the limit block, the limit block is against the inner wall of the groove, and the limit block can break away from the groove under the action of external force, so that the connecting rod and the joint can rotate relatively; The anti-overload joint of the screwdriver can prevent the screw from being damaged due to excessive torque, and then the screwdriver assembly and the screwdriver can prevent the screw from being damaged due to excessive torque.

Description

Screwdriver anti-overload adapter, screwdriver assembly and screwdriver

technical field

The utility model relates to the field of mechanical tools, in particular to a screwdriver anti-overload joint, a screwdriver assembly and a screwdriver.

Background technique

In mechanical work, it is often necessary to use a screwdriver to disassemble and fasten the screws. At present, the grooves of screws widely used in production and life are mostly regular polygonal structures. Because it is difficult for construction personnel to accurately control the torque during the process of disassembling and fastening screws with a screwdriver, it is often easy to exceed the screw. The maximum torque carried will cause the groove of the screw head to be damaged, causing the screwdriver to slip, which will bring unnecessary troubles to the mechanical work.

Although the digital torque screwdriver currently used in production and life can accurately measure and read the torque carried by the screw, it cannot be used in mechanical work on a large scale due to the high price and poor reliability of the digital torque screwdriver; Purchasing a mechanical anti-overload screwdriver will cause the existing screwdriver to be idle and cause waste.

Utility model content

The purpose of this utility model is to provide a screwdriver anti-overload joint, which can be used to connect the screwdriver head, and is used to control the rotation force of the screwdriver connected to the screwdriver anti-overload joint, and prevent the screwdriver connected to the screwdriver anti-overload joint. When the head is tightening or loosening the screw, the screw will be damaged due to excessive torque, so as to avoid increasing the cost of mechanical production and even avoid mechanical work accidents.

Another object of the present utility model is to provide a screwdriver assembly, which can well control the force of tightening or loosening the screw, effectively prevent the screw from being damaged due to excessive torque, and further reduce the cost of mechanical production and mechanical work. accident frequency.

Another purpose of this utility model is to provide a screwdriver, which can conveniently control the force of tightening or loosening the screw, effectively prevent the screw from being damaged due to excessive torque, and further reduce the cost of mechanical production and reduce the frequency of mechanical work accidents; The screwdriver can utilize the grip part to achieve the purpose of labor saving.

Embodiments of the utility model are achieved in that:

A screwdriver anti-overload joint, which includes a connecting rod, a joint, an elastic part and a limit block, one end of the connecting rod is connected to the inside of the joint, and the other end is used to connect the screwdriver head, the connecting rod is provided with a groove, the elastic part and the limit block The positioning blocks are all arranged in the joint, one end of the elastic member is against the inner wall of the joint, the other end is against the limit block, the limit block is against the inner wall of the groove, and the limit block can be separated from the groove under the action of external force, thereby The connecting rod and the joint can be rotated relative to each other.

In a preferred embodiment of the present invention, the above-mentioned joint also includes a limiting portion and a limiting hole, the limiting portion is movably arranged in the limiting hole, the limiting block is a limiting bead matched with the groove, and the elastic member It is arranged in the limiting hole, and one end of the elastic member is against the limiting bead, and the other end is against the limiting part.

In a preferred embodiment of the present invention, the inner wall of the limiting hole is provided with a first internal thread, the outer wall of the limiting part is provided with a first external thread, and the first internal thread cooperates with the first external thread.

In a preferred embodiment of the present utility model, the elastic member includes a spring or an elastic rubber block.

A screwdriver assembly, which includes the above-mentioned screwdriver anti-overload joint and a screwdriver head, the above.

In a preferred embodiment of the present invention, the screwdriver head is detachably connected to the connecting rod.

A screwdriver, which includes a grip part and the above-mentioned screwdriver assembly, one end of the grip part is connected to the end of the screwdriver anti-overload joint away from the screwdriver head.

In a preferred embodiment of the present invention, the above-mentioned holding part is detachably connected to the anti-overload joint of the screwdriver.

In a preferred embodiment of the utility model, the end of the above-mentioned joint away from the connecting rod is provided with a fixing hole, an opening and a fixing piece, the grip part is embedded in the opening, the fixing hole penetrates the opening, and the fixing piece is detachably connected. in the fixing hole.

In a preferred embodiment of the present invention, the inner wall of the fixing hole is provided with a second internal thread, the outer wall of the fixing member is provided with a second external thread, and the second internal thread cooperates with the second external thread.

The beneficial effect of the screwdriver anti-overload joint, the screwdriver assembly and the screwdriver of the embodiment of the present invention is that: connecting the screwdriver head to the screwdriver anti-overload joint can facilitate the control of the force when tightening or loosening the screw, effectively avoiding excessive torque If the screw is damaged, the cost of mechanical production can be reduced, and the frequency of mechanical work accidents can be reduced; on the screwdriver anti-overload joint, the screwdriver composed of a grip part can be connected, on the one hand, the screwdriver anti-overload joint can be used to control the torque of turning the screw, effectively Prevent the screw from being damaged due to excessive torque; on the other hand, the grip can be used to save effort.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings will be briefly introduced in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained according to these drawings without creative work.

Fig. 1 is the structural representation of the screwdriver of the utility model embodiment;

Fig. 2 is the structural representation of the screwdriver assembly of the utility model embodiment;

Fig. 3 is a schematic structural view of a screwdriver anti-overload joint according to an embodiment of the present invention;

Fig. 4 is an enlarged view of place IV in Fig. 3;

Fig. 5 is another structural schematic diagram of the anti-overload joint of the screwdriver according to the embodiment of the present invention.

Icons: 10-screwdriver; 100-screwdriver assembly; 110-screwdriver anti-overload connector; 120-grip; 130-screwdriver head; 111-connecting rod; -groove; 116-limiting beads; 117-limiting hole; 118-installation hole; 119-through hole; 121-first internal thread; 122-first external thread; 131-fixing hole; 132-fixer; 133 - Holes.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the embodiment of the utility model, it should be noted that the orientation or positional relationship indicated by the terms "inside" and "outside" are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship indicated by the utility model when the product is used Orientation or positional relationship conventionally placed is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be interpreted as Limitations on the Invention. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In the description of the embodiments of the present utility model, it should also be noted that, unless otherwise specified and limited, the terms "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

Referring to FIG. 1 , this embodiment provides a screwdriver 10 , including a screwdriver assembly 100 and a handle 120 , and one end of the screwdriver assembly 100 is connected to the handle 120 . When using the screwdriver 10 , hold the grip part 120 and rotate the grip part 120 , the screwdriver assembly 100 will rotate together, and then can be used to screw a screw.

Specifically, the gripping portion 120 and the screwdriver assembly 100 may be detachably connected, for example, by threaded connection, interference fit or clamping, etc., and various types or models of the gripping portion 120 and the screwdriver assembly may be used as required. The assembly 100 is matched for different mechanical jobs.

Please refer to FIG. 1 and FIG. 2 , the screwdriver assembly 100 includes a screwdriver head 130 and a screwdriver anti-overload joint 110 , the screwdriver head 130 is connected to the screwdriver anti-overload joint 110 .

Specifically, the above-mentioned screwdriver head 130 and the screwdriver anti-overload joint 110 are detachably connected, for example: interference fit, clamping or threaded connection and the like. The detachable connection between the screwdriver bit 130 and the screwdriver anti-overload joint 110 can be used to replace different screwdriver bits 130 , such as a Phillips screwdriver bit or a flat-blade screwdriver bit, so as to meet different mechanical work requirements.

Please refer to FIG. 3 , the screwdriver anti-overload joint 110 includes a connecting rod 111 , a joint 112 , an elastic member 113 and a limiting block (not shown). One end of the connecting rod 111 is arranged inside the joint 112, and the other end is used to connect the screwdriver bit 130. The connecting rod 111 is provided with a groove 115, and the elastic member 113 and the stop block are arranged inside the joint 112. One end of the elastic member 113 The other end is against the inner wall of the joint 112, and the other end is against the above-mentioned limiting block. Can rotate relatively.

Specifically, one end of the joint 112 is provided with a mounting hole 118, one end of the connecting rod 111 is disposed in the mounting hole 118, and the end of the connecting rod 111 disposed in the mounting hole 118 is provided with the above-mentioned groove 115, and the other end of the connecting rod 111 A through hole 119 for installing the above-mentioned screwdriver head 130 is provided; the above-mentioned joint 112 also includes a limiting part 114 and a limiting hole 117, the limiting block is a limiting bead 116 matched with the groove 115, and the above-mentioned elastic member 113 is arranged on the The limiting hole 117 , and one end of the elastic member 113 abuts against the limiting portion 114 , and the other end abuts against the limiting bead 116 , and the limiting bead 116 abuts against the bottom of the groove 115 .

Specifically, the connecting rod 111 and the screwdriver head 130 can be detachably connected, for example: interference fit, clamping or threaded connection, etc. The detachable connection between the connecting rod 111 and the screwdriver head 130 in this embodiment is an interference fit .

Further, the cross-section of the through hole 119 of the connecting rod 111 can be a polygon with corners (not shown), for example: square, rectangular and hexagonal, etc. Meanwhile, the screwdriver bit 130 is arranged on the part of the above-mentioned through hole 119 The cross-sectional shape should correspond to it, and setting the above-mentioned through hole 119 to be angular can prevent the screwdriver bit 130 from slipping in the through hole 119 , thereby ensuring higher working efficiency of the screwdriver 10 .

The two ends of the elastic member 113 respectively abut against the limiting bead 116 and the limiting portion 114, and the limiting bead 116 abuts against the bottom of the groove 115 of the connecting rod 111, both ends of the elastic member 113 are under pressure, so that the elastic member 113 produces compression. When the screwdriver head 130 connected to the connecting rod 111 turns the screw, the force is excessive, and the elastic member 113 is compressed so that the limiting bead 116 leaves the groove 115, that is, the torque applied by the screwdriver 10 to the screw reaches a certain limit. , the screwdriver head 130 will slip along with the connecting rod 111, thereby effectively preventing the screw from being damaged due to excessive torque.

Specifically, the above-mentioned groove 115 can be, for example, a hemispherical pit, and the limiting bead 116 can be, for example, a steel ball, a plastic bead, etc. To the magnitude of the torque that the screw is subjected to, the screw can be protected more sensitively.

It should be noted that the number of grooves 115 on the connecting rod 111 can be, for example, 1, 2, 3 or 4, etc., and the specific number of grooves 115 can be adjusted as required. In this embodiment, the number of grooves 115 The number is 4, and the 4 grooves 115 can be evenly arranged along the circumference of the connecting rod 111. When the number of grooves 115 on the connecting rod 111 is large, when the torque received by the screwdriver 10 decreases from large to small, The time for the limiting bead 116 to return to the groove 115 can be shortened, thereby improving the efficiency of using the screwdriver 10 to complete mechanical work.

Further, the limiting part 114 is movably arranged in the aforementioned limiting hole 117, and the aforementioned limiting part 114 is movable along the axis of the limiting hole 117, and then the position of the elastic member 113 on the limiting part 114 can be adjusted. The degree of compression is to adjust the maximum torque that the screwdriver anti-overload joint 110 can bear.

Specifically, referring to FIG. 4, the inner wall of the above-mentioned limiting hole 117 is provided with a first internal thread 121, and the outer wall of the limiting portion 114 is provided with a first external thread 122, and the first internal thread 121 and the first external thread 122 cooperate with each other. That is, it can be used to adjust the position of the limiting portion 114 in the limiting hole 117 , that is, to adjust the compression degree of the elastic member 113 connected to the limiting portion 114 . When the limiting part 114 is adjusted close to the limiting bead 116, the elastic member 113 is subjected to a greater compression force, and the connecting rod 111 can bear a larger moment; when the limiting part 114 is adjusted away from the limiting bead 116, The compressive force received by the elastic member 113 is smaller, and the torque that the connecting rod 111 can bear is relatively small.

Furthermore, the above-mentioned elastic member 113 can be, for example, a spring or an elastic rubber block. Limiting beads 116.

In this embodiment, the gripping portion 120 is detachably connected to the end of the joint 112 away from the screwdriver head 130 . Specifically, please refer to FIG. 3 and FIG. 5 , the end of the joint 112 away from the mounting hole 118 is provided with a fixing hole 131 , an opening 133 and a fixing piece 132 , the fixing piece 132 passes through the opening 133 , and the fixing piece 132 is detachable. is connected to the fixing hole 131 , and the gripping portion 120 can be disposed in the opening 133 . When the fixing part 132 is not arranged in the fixing hole 131, the opening 133 is in a loose state, and the grip part 120 can be stretched into the above-mentioned opening 133, or the grip part 120 can be taken out from the opening 133; when the fixing part 132 is set In the above-mentioned fixing hole 131 , and the opening 133 is in a pressed state, the handle 120 can be fixed in the opening 133 .

Specifically, the inner wall of the fixing hole 131 is provided with a second internal thread (not shown), the outer wall of the fixing member 132 is provided with a second external thread (not shown), and the second external thread and the second internal thread can be easily matched. The connection and detachment between the fixing hole 131 and the fixing member 132 are realized, thereby facilitating replacement of the connecting rod 111 connected with the screwdriver bit 130 .

The working principle of the screwdriver 10 is: the gripping part 120 is connected with the screwdriver assembly 100, and the gripping part 120 can be used to rotate the screwdriver assembly 100, and then drive the screw to rotate. The screwdriver assembly 100 includes a screwdriver head 130 and a screwdriver anti-overload joint 110, the screwdriver head 130 is used to turn the screw, and the screwdriver anti-overload joint 110 can be used to prevent the screw from being damaged due to excessive torque; the screw The anti-overload joint 112 can also replace the screwdriver head 130 to adapt to different screws; the anti-overload joint 110 of the screwdriver can adjust the maximum torque it can withstand, so as to be suitable for mechanical operations in different situations.

To sum up, the beneficial effects of the screwdriver anti-overload joint, screwdriver assembly and screwdriver of the present invention are: connecting the screwdriver head to the screwdriver anti-overload joint can facilitate the control of the force when tightening or loosening the screw, effectively avoiding Too much torque will damage the screw, which can reduce the cost of mechanical production and reduce the frequency of mechanical work accidents; the screwdriver composed of the grip part is connected to the screwdriver anti-overload joint, on the one hand, the screwdriver anti-overload joint can be used to control the torque of turning the screw , Effectively prevent the screw from being damaged due to excessive torque; on the other hand, the grip can be used to save effort.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. A screwdriver anti-overload joint, characterized in that it comprises a connecting rod, a joint, an elastic member and a stopper, one end of the connecting rod is connected to the inside of the joint, and the other end is used to connect the screwdriver head, the The connecting rod is provided with a groove, the elastic member and the limiting block are both arranged in the joint, one end of the elastic member is against the inner wall of the joint, and the other end is against the limiting block, and the limiting The positioning block abuts against the inner wall of the groove, and the limiting block can break away from the groove under the action of an external force, so that the connecting rod and the joint can rotate relative to each other. 2. The anti-overload connector for screwdriver according to claim 1, characterized in that, the connector further comprises a limiter and a limiter hole, the limiter is movably arranged in the limiter hole, the limiter The positioning block is a limiting bead matched with the groove, the elastic member is arranged in the limiting hole, one end of the elastic member is against the limiting bead, and the other end is against the limiting portion. 3. The screwdriver anti-overload joint according to claim 2, characterized in that, the inner wall of the limiting hole is provided with a first internal thread, the outer wall of the limiting part is provided with a first external thread, and the first The internal thread cooperates with the first external thread. 4. The anti-overload connector for screwdriver according to claim 1, wherein the elastic member comprises a spring or an elastic rubber block. 5. A screwdriver assembly, characterized in that it comprises the screwdriver anti-overload joint and a screwdriver head according to any one of claims 1-4, and the screwdriver head is connected to the connecting rod. 6. The screwdriver assembly according to claim 5, wherein the screwdriver head is detachably connected to the connecting rod. 7. A screwdriver, characterized in that it comprises a gripping part and the screwdriver assembly according to claim 5 or 6, one end of the gripping part is connected to the end of the screwdriver anti-overload joint away from the screwdriver head. 8 . The screwdriver according to claim 7 , wherein the gripping part is detachably connected to the screwdriver anti-overload joint. 9. The screwdriver according to claim 8, characterized in that, the end of the joint away from the connecting rod is provided with a fixing hole, an opening and a fixing member, and the gripping part is embedded in the opening, so that The fixing hole runs through the opening, and the fixing piece is detachably connected to the fixing hole. 10. The screwdriver according to claim 9, wherein the inner wall of the fixing hole is provided with a second internal thread, the outer wall of the fixing member is provided with a second external thread, and the second internal thread and the The second external thread fits.