A multi-bit replaceable wrench

Abstract

A multi-bit replaceable wrench. It relates to a wrench. A multi-bit replaceable wrench with a compact structure, reduced weight for carrying wrenches of multiple specifications, and improved efficiency in replacing bits is provided. Through the structural improvement at the end of the wrench handle, the present invention enhances the function of quickly replacing multiple bits of the wrench. When replacing the bit: Push the locking ring backward, the button cap on the right separates from the locking ring, and under the action of the compression spring, the pin shaft exits the connection hole of the bit, and then the bit can be taken out. When inserting the bit of the required specification or form and pressing the button cap, the pin shaft enters the connection hole of the bit, enabling the bit to be connected to the wrench handle. At this time, under the action of the return spring, the locking ring moves forward until the locking ring slides to the side of the button cap, keeping the button cap stable, and the bit and the wrench handle become an integral body.

Description

Technical Field

[0001] The present invention relates to a wrench, and more particularly to an improved structure of a multi-bit replaceable wrench. Background Art

[0002] A wrench is a commonly used installation and disassembly tool in daily life. It is a manual tool with an opening that uses the lever principle to turn bolts and nuts. Usually, a gripping part and an external force application part are made at one or both ends of the handle. By applying an external force to the external force application part, the bolt or nut can be turned. There are many types of wrenches, which can be divided into double-ended wrenches, combination wrenches, adjustable wrenches, and so on. An ordinary wrench can only be applicable to nuts of one specification. When in use, it is necessary to constantly replace wrenches of different sizes. Wrenches of different sizes are relatively bulky to carry, extremely inconvenient, and occupy a large amount of space, resulting in waste. Summary of the Invention

[0003] In view of the above problems, the present invention provides a multi-bit replaceable wrench with a compact structure, reduced carrying weight of wrenches of multiple specifications, and improved efficiency of bit replacement.

[0004] The technical solution of the present invention is: a multi-bit replaceable wrench, comprising:

[0005] A handle, an installation groove adapted to the bit is provided at the end of the handle, and a limiting hole communicating with the installation groove is provided on the side thereof;

[0006] A locking ring, the locking ring is slidably limited at the end of the handle for closing or opening the limiting hole;

[0007] And a positioning rod, one end of the positioning rod penetrates from the outside of the limiting hole, and is closed by the sliding of the locking ring, and the other end of the positioning rod extends into the installation groove.

[0008] Specifically, the positioning rod includes:

[0009] A pin shaft, the pin shaft is cylindrical and extends from the outside of the limiting hole of the handle into the connection hole of the bit;

[0010] And a button cap, the button cap is detachably and fixedly arranged at the end of the pin shaft and is adapted to the locking ring.

[0011] Specifically, a compression spring is provided on the positioning rod, and the compression spring is limited on the positioning rod; when the locking ring slides down and disengages from the button cap, the elastic force of the compression spring causes the positioning rod to pop outwards.

[0012] Specifically, a limiting cavity adapted to the compression spring is provided on the inner side of the button cap.

[0013] Specifically, a positioning groove extending along the insertion direction of the pin shaft is provided on the outer circumferential surface of the pin shaft;

[0014] A positioning member extending into the positioning groove is provided on the wrench handle.

[0015] Specifically, a limit cover adapted to the locking ring is provided at the outer end of the button cap;

[0016] The limit cover is fixedly connected to the button cap.

[0017] Specifically, the limit hole includes a right limit hole and a left limit hole;

[0018] The positioning rod extends into the right connection hole of the wrench head from the outside of the right limit hole.

[0019] Specifically, an elastic positioner is provided in the left limit hole;

[0020] The elastic positioner includes a positioning tail seat, a positioning spring and a positioning head connected in sequence;

[0021] A left positioning groove adapted to the positioning head is provided on the wrench head.

[0022] Specifically, a limit platform adapted to the locking ring is provided on the wrench handle;

[0023] When the locking ring slides towards the gripping part of the wrench handle, it is limited by the limit platform.

[0024] Specifically, a plurality of elastic clamping positions are provided on the inner side of the locking ring;

[0025] A return spring is provided on the elastic clamping position, and the return spring is limited between the top of the elastic clamping position and the limit platform.

[0026] Through the structural improvement of the end of the wrench handle, the present invention improves the function of quickly replacing various wrench heads of the wrench. When replacing the wrench head: push the locking ring backward, the button cap on the right is separated from the locking ring, and under the action of the compression spring, the pin shaft exits the connection hole of the wrench head, and at this time, the wrench head can be taken out. When inserting the wrench head of the required specification or form and pressing the button cap, the pin shaft enters the connection hole of the wrench head, so that the wrench head is connected to the wrench handle. At this time, the locking ring moves forward under the action of the return spring until the locking ring slides to the side of the button cap to keep the button cap stable, and the wrench head and the wrench handle become an integral body. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is an exploded structural schematic diagram of the present invention,

[0028] Figure 2 is a three-dimensional structural schematic diagram of the present invention,

[0029] Figure 3 is a three-dimensional structural schematic diagram in a separated state of the wrench head and the wrench handle,

[0030] Figure 4It is a three-dimensional structural schematic diagram of the reset spring connection state.

[0031] Figure 5 It is a three-dimensional structural schematic diagram of the positioning rod and the elastic positioner in the practical state.

[0032] Figure 6 It is a schematic diagram of the structure of the first wrench head.

[0033] Figure 7 It is a schematic diagram of the structure of the second wrench head;

[0034] In the figure, 100 is the wrench handle, 110 is the installation groove, 111 is the right limit hole, 112 is the left limit hole, and 120 is the limit platform.

[0035] 200 is the locking ring, and 210 is the reset spring.

[0036] 300 is the positioning rod, 310 is the pin shaft, 311 is the positioning groove, 320 is the button cap, 321 is the limit cover, and 330 is the compression spring.

[0037] 400 is the elastic positioner, 410 is the positioning tail seat, 420 is the positioning spring, and 430 is the positioning head.

[0038] 500 is the wrench head, and 510 is the left positioning groove. Detailed implementation manners

[0039] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0040] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 should not be construed as a limitation to the present invention. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0041] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "joined" 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 invention can be understood according to specific circumstances.

[0042] The present invention is referred to Figure 1-7 as shown;

[0043] A multi-bit replaceable wrench, comprising:

[0044] A wrench handle 100, at the end of which there is an installation groove 110 adapted to a bit 500 (in this case, the form of the bit 500 is not limited to Figure 6 and Figure 7 as shown, and it only needs to be connected to the wrench handle 100 of this case for use), and a limiting hole communicating with the installation groove 110 is provided on its side. Referring to Figure 1 as shown, the limiting hole penetrates horizontally, that is, the installation groove 110 divides the end of the wrench handle 100 into two ears, and the limiting holes on the two ears are coaxial;

[0045] A locking ring 200, which is slidably sleeved on the end of the wrench handle 100 and is used to close or open the limiting hole;

[0046] And a positioning rod 300, one end of which penetrates into the installation groove 110 from the outside of the limiting hole and is sealed by the sliding of the locking ring 200, and the other end of the positioning rod 300 extends into the installation groove 110. In this case, a locking groove corresponding to the limiting hole is provided on the connecting part of the bit 500 inserted into the installation groove 110. When the positioning rod 300 moves towards the installation groove 110 through the locking ring 200, it enters the locking groove for locking.

[0047] Further defined, the positioning rod 300 includes:

[0048] A pin shaft 310, which is cylindrical and extends from the outside of the limiting hole of the wrench handle 100 into the connecting hole of the bit 500;

[0049] And a button cap 320, which is detachably (connected by threads in this case) fixedly arranged at the end of the pin shaft 310 and is adapted to the locking ring 200.

[0050] To further improve the convenience of using the positioning rod 300, a compression spring 330 is provided on the positioning rod 300, and the compression spring 330 is limited on the positioning rod 300; when the locking ring 200 slides down and disengages from the button cap 320, the elastic force of the compression spring 330 causes the positioning rod 300 to pop outwards.

[0051] To further improve the stability of the compression spring 330 sleeving, a limiting cavity adapted to the compression spring 330 is provided inside the button cap 320, and the end of the compression spring 330 is sleeved into the limiting cavity to improve the working stability of the compression spring 330.

[0052] Further defined, a positioning groove 311 extending along the insertion direction of the pin shaft 310 is provided on the outer circumferential surface of the pin shaft 310; the length of the positioning groove 311 is adapted to the stroke of the pin shaft 310 withdrawing from the wrench head 500, that is, when the pin shaft 310 moves outwards through the compression spring 330, the positioning groove 311 moves towards the button cap 320 until the positioning member fits with the end of the positioning groove 311. At this time, the wrench head 500 is separated from the pin shaft 310, and the wrench head 500 is taken out from the installation groove 110;

[0053] A positioning member extending into the positioning groove 311 is provided on the wrench handle 100. In this case, the positioning member is a pin shaft, and the pin shaft and the wrench handle are connected by an interference fit method.

[0054] Further defined, a limiting cover 321 adapted to the locking ring 200 is provided at the outer end of the button cap 320;

[0055] The limiting cover 321 is fixedly connected to the button cap 320. When the locking ring 200 slides upwards (towards the wrench head 500), it is limited by the adapted limiting cover 321, effectively preventing the locking ring 200 from sliding out of the end of the wrench handle 100 and getting out of position, thus causing the reliability and stability of the connection between the positioning rod 300 and the wrench head 500.

[0056] In this case, the limiting cover 321 is fixedly provided on the side of the button cap 320 close to the wrench head 500, and the other side is a flat surface, which is adapted to the locking ring 200. After the locking ring 200 is reset by a plurality of return springs 210, referring to Figure 4 As shown, the end of the ear plate on the right side of the locking ring 200 fits with the limiting cover 321, and the button cap is pressed into the limiting hole. It not only has a delicate structure design but also is simple, stable and easy to operate.

[0057] Further defined, the installation groove 110 divides the end of the wrench handle 100 into a left ear part and a right ear part;

[0058] The limiting holes include a right limiting hole 111 on the right ear part and a left limiting hole 112 on the left ear part;

[0059] The positioning rod 300 extends into the right connection hole of the wrench head 500 from the outside of the right limiting hole 111.

[0060] For further optimization, an elastic positioner 400 is provided in the left limiting hole 112;

[0061] The elastic positioner 400 includes a positioning tail seat 410, a positioning spring 420 and a positioning head 430 which are connected in sequence;

[0062] A left positioning groove 510 adapted to the positioning head 430 is provided on the wrench head 500.

[0063] After the elastic positioner 400 is placed in the left limiting hole 112, the locking ring 200 slides towards the wrench head 500, prompting the positioning tail seat 410 to press the positioning head 430 through the positioning spring 420, and the positioning head 430 is firmly limited in the left positioning groove 510.

[0064] For further limitation of the locking ring 200, a limiting platform 120 adapted to the locking ring 200 is provided on the wrench handle 100;

[0065] When the locking ring 200 slides towards the holding part of the wrench handle 100, it is limited by the limiting platform 120.

[0066] A number of elastic clamping positions are provided on the inner side of the locking ring 200; in this case, 4 elastic clamping positions are designed;

[0067] A return spring 210 is provided on the elastic clamping position, and the return spring 210 is limited between the top of the elastic clamping position and the limiting platform 120. The return spring 210 gives the locking ring 200 a sliding thrust towards the wrench head 500, so as to ensure that the limiting hole remains closed in the normal state; the limiting of the top when the locking ring 200 slides upwards is realized through the limiting cover 321 on the button cap 320.

[0068] This wrench mainly adds two functions:

[0069] One is that the wrench head 500 can be replaced with different specifications and forms;

[0070] The second is that any angle between the wrench head 500 and the wrench handle 100 can be adjusted.

[0071] The replacement of the wrench head 500 is realized as follows: Push the locking ring 200 backwards (or called downwards, that is, towards the handle direction), as shown in Figure 1 As shown, the button cap 320 on the right is separated from the locking ring 200, and the pin shaft 310 exits the connection hole of the wrench head 500 under the action of the compression spring 330, and at this time the wrench head 500 can be taken out.

[0072] When a wrench head 500 of the required specification or form is inserted and the button cap 320 (the button cap 320 and the pin shaft 310 are connected by threads) is pressed, the pin shaft 310 enters the connection hole of the wrench head 500, so that the wrench head 500 is coupled with the wrench handle 100. At this time, the locking ring 200 moves forward under the action of the 4 return springs 210 until the locking ring 200 slides to the side of the button cap 320, keeping the button cap 320 stable, and the wrench head 500 and the wrench handle 100 become an integral body. Refer to Figure 1 as shown.

[0073] Refer to Figure 1 As shown, the positioning tailstock 410, the positioning spring 420 and the positioning head 430 form an elastic positioner 400 located in the left limiting hole 112 of the wrench head 500. A stepped surface is designed on the left side of the locking ring 200 (refer to Figure 1 as shown). When the locking ring 200 slides towards the wrench head 500, the left stepped surface of the locking ring 200 presses the elastic positioner 400. Under the action of the positioning spring 420, the positioning head 430 presses the left side of the wrench head 500, making the wrench head 500 relatively fixed when adjusting a certain angle.

[0074] A soft plastic sleeve is also designed at the end of the wrench handle 100, which increases the comfort of using the wrench.

[0075] Regarding the content disclosed in this case, the following points need to be explained:

[0076] (1). The attached drawings of the embodiments disclosed in this case only relate to the structures involved in the embodiments disclosed in this case, and other structures can refer to the general design;

[0077] (2). Without conflict, the embodiments disclosed in this case and the features in the embodiments can be combined with each other to obtain new embodiments;

[0078] The above is only the specific implementation manners disclosed in this case, but the protection scope of this disclosure is not limited thereto. The protection scope disclosed in this case shall be subject to the protection scope of the claims.

Claims

1. A multi-bit replaceable wrench, characterized in that, Comprising: A wrench handle, an installation groove adapted to a wrench head is provided at an end of the wrench handle, and a limiting hole communicating with the installation groove is provided at a side thereof; A locking ring, which is slidably limited at the end of the wrench handle and is used to close or open the limiting hole; And a positioning rod, one end of the positioning rod penetrates from the outside of the limiting hole, and is closed by the sliding of the locking ring, and the other end of the positioning rod extends into the installation groove; The positioning rod includes: A pin shaft, the pin shaft is cylindrical and extends from the outside of the limiting hole of the wrench handle into the connection hole of the wrench head; And a button cap, the button cap is detachably and fixedly arranged at the end of the pin shaft and is adapted to the locking ring; A compression spring is arranged on the positioning rod, and the compression spring is limited on the positioning rod; when the locking ring slides down and disengages from the button cap, the elastic force of the compression spring causes the positioning rod to pop outwards; A positioning groove extending along the insertion direction of the pin shaft is provided on the outer circumferential surface of the pin shaft; A positioning member extending into the positioning groove is provided on the wrench handle; The limiting hole includes a right limiting hole and a left limiting hole; The positioning rod extends from the outside of the right limiting hole and enters the right connection hole of the wrench head; An elastic positioner is arranged in the left limiting hole; The elastic positioner includes a positioning tail seat, a positioning spring and a positioning head connected in sequence; A left positioning groove adapted to the positioning head is provided on the wrench head; 2. The multi-bit replaceable wrench according to claim 1, characterized in that, A limiting cavity adapted to the compression spring is provided on the inner side of the button cap; 3. A multi-bit replaceable wrench according to claim 1, characterized in that, A limiting cover adapted to the locking ring is provided at the outer end of the button cap; The limiting cover is fixedly connected to the button cap; 4. A multi-bit replaceable wrench according to claim 1, wherein, A limiting platform adapted to the locking ring is provided on the wrench handle; When the locking ring slides towards the gripping part of the wrench handle, it is limited by the limiting platform; 5. The multi-bit replaceable wrench according to claim 4, wherein, A plurality of elastic clamping positions are provided on the inner side of the locking ring; A return spring is arranged on the elastic clamping position, and the return spring is limited between the top of the elastic clamping position and the limiting platform.

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