Screwdriver handle with bit storage function and screwdriver

Abstract

The utility model discloses a screwdriver handle with the function of accommodating the bit, solves the technical problem that the bit fixing device and the shell of screwdriver handle are easy to rotate in the prior art. The utility model provides a screwdriver handle with the function of accommodating the bit, including casing, guide rod, sleeve, bit holder, end cover and elastic part, and the casing has a cavity, the cavity has an opening that is open to the tail end of the casing, the guide rod is fixed in the cavity and extends from the bottom of the cavity to the opening direction, the sleeve is slidably sleeved on the guide rod, the bit holder is rotatably installed in the middle of the sleeve, the end cover is fixed to the tail part of the sleeve, the elastic part is pre-tightened between the head of the sleeve and the bottom of the cavity, one of the sleeve and the cavity wall is provided with a limiting block, the other is provided with a limiting slot matched with the limiting block, the limiting slot extends along the axial direction of the guide rod, and the rotation of the sleeve relative to the casing is limited. The utility model further provides a screwdriver, including the screwdriver handle of the above technical scheme.

Description

Technical Field

[0001] This utility model relates to the field of screwdrivers, and in particular to a screwdriver handle with a screwdriver tip storage function. Background Technology

[0002] Screwdrivers with detachable and replaceable tips typically have a storage space in the handle to hold multiple different types of tips. For example, Chinese utility model patent CN204076136U, entitled "A Multi-Tier Screwdriver Handle," discloses a tip-fixing device that secures multiple different types of tips. When a tip needs to be replaced, the tip-fixing device can be slid out of the screwdriver handle.

[0003] The housing has a cavity containing a guide rod. The sleeve slides relative to the guide rod within the cavity, and the cutter head fixing device is fixed to the sleeve. Because there is no limiting device between the sleeve and the housing, when the cutter head is fixed to the cuttingter head fixing device, the device can easily rotate along with the sleeve, making it difficult to secure the cutter head to the device. Utility Model Content

[0004] This utility model proposes a screwdriver handle with a blade storage function to overcome the shortcomings of the prior art, thereby solving the technical problem that the blade fixing device and the screwdriver handle housing are prone to rotation in the prior art.

[0005] To achieve the above technical objectives, the screwdriver handle with a blade storage function proposed in this utility model includes: A housing having a cavity having an opening that opens toward the tail end of the housing; The guide rod is fixed in the cavity and extends from the bottom of the cavity toward the opening. The sleeve is slidably fitted onto the guide rod; The cutter head holder is mounted in the middle of the sleeve with limited rotation; End cap, fixed to the tail of the sleeve; and, The elastic element is pre-tightened between the sleeve head and the bottom of the cavity. The sleeve has a retracted state and an open state. In the stowed state, the end cap covers the opening, and the cutter head holder is housed in the cavity; In the open state, the end cap separates from the opening, the elastic element releases and pushes the sleeve to move, causing the cutter head holder to disengage from the cavity. One of the sleeve and the cavity wall of the housing is provided with a limiting block protruding on it, and the other is provided with a limiting groove that cooperates with the limiting block. The limiting groove extends along the axial direction of the guide rod.

[0006] The screwdriver handle with a blade head storage function of this utility model has a limiting block on one of the cavity walls of the sleeve and the housing, and a limiting groove on the other to cooperate with the limiting block. The limiting block and the limiting groove cooperate to restrict the rotation of the sleeve relative to the housing. Since the blade head holder is mounted on the sleeve with restricted rotation, the blade head holder will not rotate relative to the housing when the user installs the blade head onto the blade head holder.

[0007] Preferably, the sleeve head includes a radially extending support ring, and the limiting block or the limiting groove is disposed on the support ring.

[0008] By adopting the aforementioned technical solution, a support ring is set at the head of the sleeve. The radial extension of the support ring gives it sufficient strength. The limiting block or limiting groove is set on the support ring, which helps to improve the strength of the limiting block or the groove wall of the limiting groove, thereby improving the anti-rotation effect between the sleeve and the shell.

[0009] Preferably, a support sleeve is also included, which is sleeved on the guide rod and placed at the bottom of the cavity. The support sleeve includes an annular bottom ring portion and a cylindrical portion disposed on the bottom ring. The elastic element is a compression spring, which is pre-tightened between the support ring and the support sleeve. One end of the elastic element is sleeved on the cylindrical portion and supported by the bottom ring portion.

[0010] Using the aforementioned technical solution, the support sleeve includes a cylindrical part and a bottom ring part. The cylindrical part allows the support sleeve to better fit with one end of the elastic element, reducing the shaking of the elastic element during use. One end of the elastic element is also supported by the bottom ring part, so that the support sleeve can be pressed into the bottom of the cavity, preventing the support sleeve from moving and causing the cylindrical part to disengage from the fitting position with the elastic element.

[0011] Preferably, the sleeve head further includes a sleeve sleeve located at the center of the support ring, and the other end of the elastic element is sleeved on the sleeve sleeve and supported by the support ring.

[0012] By adopting the aforementioned technical solution, the other end of the elastic element can also better cooperate with the sleeve head, reducing the shaking of the end of the elastic element near the sleeve head during use.

[0013] Preferably, the support sleeve has a through hole for fitting the guide rod, the diameter of the through hole gradually decreases along the extension direction, and the minimum diameter of the through hole is greater than the diameter of the guide rod.

[0014] Using the aforementioned technical solution, the support sleeve can slide relative to the guide rod, making it easier to install the support sleeve on the guide rod. At the same time, the diameter of the through hole gradually decreases along the extension direction, and the minimum diameter of the through hole is greater than the diameter of the guide rod, making it less likely for the support sleeve to get stuck with the guide rod, ensuring that the installed support sleeve can fit tightly against the bottom of the cavity under the action of the elastic element.

[0015] Preferably, the limiting block or limiting groove on the cavity wall of the housing extends to the opening, the guide rod includes a rod body and a boss that protrudes radially from the rod body, the boss is located at one end of the rod body near the opening, the sleeve includes a connecting hole, the connecting hole has a first through diameter and a second through diameter arranged sequentially from the head of the sleeve to the tail of the sleeve, the second through diameter is larger than the first through diameter, the first through diameter is adapted to the diameter of the rod body and restricts the passage of the boss, so that the head of the sleeve in the open state is confined in the cavity.

[0016] By adopting the aforementioned technical solution, the limiting block or limiting groove on the cavity wall of the shell extends to the opening, so that the sleeve can extend out of the cavity as much as possible under the premise of being stopped from rotating, which makes it easier to pick up and put down the cutting head on the cutting head holder. Moreover, the sleeve head is limited in the cavity, avoiding the separation of the limiting block and the limiting groove, and ensuring that the limiting block and the limiting groove can always maintain a cooperative relationship when the sleeve is retracted into the cavity.

[0017] Preferably, the device also includes a limiting sleeve located between the end cap and the cutter head holder. The sleeve has a first tube and a second tube arranged sequentially from head to tail. The first tube protrudes radially from the second tube. The cutter head holder is rotatably fitted onto the second tube. The head of the cutter head holder abuts against the first tube. The limiting sleeve is fitted onto the second tube and limits the cutter head holder to its tail.

[0018] By adopting the aforementioned technical solution, the cutter head holder can be limited to the middle of the sleeve through the cooperation of the limiting sleeve and the sleeve, so that the cutting head holder will not slide relative to the sleeve when the cutting head is picked up or put on; the cutting head holder also does not need to be fixed to the sleeve by adhesive.

[0019] Preferably, the shell has elastic buckles on opposite sides at the tail end, and the end cap has a slot. One end of the elastic buckle engages with the slot so that the end cap covers the opening.

[0020] By adopting the aforementioned technical solution, since the elastic buckles are located on opposite sides of the tail end of the housing, the elastic buckles cannot be unlocked from one side, which reduces the probability of the screwdriver handle being accidentally unlocked. At the same time, it also provides a locking guarantee for the screwdriver handle. When one side of the elastic buckle is damaged, the screwdriver handle can still lock the end cap and the housing.

[0021] Preferably, there are two limiting grooves and two corresponding limiting blocks, with any one of the limiting blocks or the limiting groove on the housing disposed between the two elastic buckles.

[0022] By adopting the aforementioned technical solution, the limiting block or limiting groove on the shell will not interfere with the elastic buckle, thereby allowing the limiting block or limiting groove to extend to the opening, ensuring that the sleeve can stop rotating relative to the shell throughout the entire process of the cavity movement of the shell. At the same time, there are two limiting blocks or limiting grooves on the shell, which further ensures the sleeve's anti-rotation. Even if the shell deforms on one side, the sleeve cannot rotate relative to the shell.

[0023] This utility model also proposes a screwdriver, including a screwdriver handle of any of the above technical solutions and a screwdriver tip insertion device for mounting the tip, wherein the screwdriver tip insertion device is located at the front end of the housing.

[0024] Since the screwdriver of this utility model adopts the screwdriver handle of any of the above-mentioned technical solutions, the screwdriver has all the technical effects of the above-mentioned technical solutions.

[0025] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the screwdriver in an embodiment of the present utility model; Figure 2 This is an exploded view of the screwdriver in an embodiment of this utility model; Figure 3 This is a cross-sectional view of the screwdriver in an embodiment of this utility model; Figure 4 This is a schematic diagram of the shell in an embodiment of the present utility model; Figure 5 This is a schematic diagram of the sleeve in an embodiment of the present utility model; Figure 6 This is a cross-sectional view of the sleeve in an embodiment of this utility model; Figure 7 This is a schematic diagram of the fit between the shell and the sleeve in an embodiment of this utility model; Figure 8 This is a schematic diagram of the guide rod in an embodiment of the present utility model; Figure 9 This is a schematic diagram of the support sleeve in an embodiment of the present utility model; Figure 10 This is a schematic diagram of the end cap in an embodiment of the present utility model; Figure 11 This is a schematic diagram of the limiting sleeve in an embodiment of this utility model.

[0027] Figure label: 100. Shell; 110. Head end; 120. Tail end; 121. Elastic buckle; 130. Cavity; 131. Opening; 140. Limiting groove; 200. Guide rod; 201. Rod body; 202. Boss. 300, Sleeve; 310, Sleeve head; 311, Support ring; 312, Connecting sleeve; 320, Middle part of sleeve; 330, Tail part of sleeve; 340, Limiting block; 350, Connecting hole; 360, First tube body; 370, Second tube body. 400. Cutter head holder; 500, end cap; 510, card slot; 600. Elastic components; 700, support sleeve; 710, bottom ring; 720, cylindrical part; 730, through hole; 800, limit sleeve; 900. Blade tip insertion device. Detailed Implementation

[0028] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" or "several" means two or more, unless otherwise expressly defined.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] like Figures 1 to 7 As shown, the screwdriver handle with a blade-holding function proposed in this embodiment of the present invention includes a housing 100, a guide rod 200, a sleeve 300, a blade holder 400, an end cap 500, and an elastic element 600. The housing 100 has a cavity 130 with an opening 131 that opens towards the tail end 120 of the housing 100. The guide rod 200 is fixed in the cavity 130 and extends from the bottom of the cavity 130 towards the opening 131. The sleeve 300 is slidably fitted onto the guide rod 200, allowing the sleeve 300 to slide relative to the guide rod 200 within the cavity 130. The blade holder 400 is rotatably mounted in the middle 320 of the sleeve, the end cap 500 is fixed to the tail 330 of the sleeve, and the elastic element 600 is pre-tightened between the head 310 of the sleeve and the bottom of the cavity 130.

[0033] The sleeve 300 has a retracted state and an open state. In the retracted state, the sleeve head 310 is close to the bottom of the cavity 130, the end cap 500 closes the opening 131, the cutter head holder 400 is housed in the cavity 130, and the elastic element 600 is compressed. In the open state, the end cap 500 separates from the opening 131, the elastic element 600 releases and pushes the sleeve 300 from the bottom of the cavity 130 toward the opening 131, the sleeve head 310 approaches the opening 131, and the cutter head holder 400 disengages from the cavity 130.

[0034] In this embodiment, the sleeve 300 has a hexagonal cross-sectional outline, the cutter head holder 400 is provided with a connecting hole, and the connecting buckle has a hexagonal cross-sectional outline that is adapted to the sleeve 300, so that the cutter head holder 400 can be installed in the middle part 320 of the sleeve with restricted rotation.

[0035] In some other embodiments, the outline of the sleeve 300 cross section may also be other shapes, such as other polygons, or a combination of polygons and arcs.

[0036] In some other embodiments, a connecting key may be provided on one of the connecting holes of the sleeve 300 and the cutter head holder 400, and a connecting groove may be provided on the other. This allows the cutter head holder 400 to be mounted in the middle 320 of the sleeve with limited rotation. The connecting key may be a single key or a spline.

[0037] In this embodiment, the elastic element 600 is a compression spring.

[0038] In this embodiment, a limiting block 340 is radially protruding on the sleeve 300, and a limiting groove 140 that cooperates with the limiting block 340 is provided on the cavity wall of the housing 100. The limiting groove 140 extends axially along the guide rod 200.

[0039] The cavity wall of the housing 100 refers to the cavity wall of the hollow cavity 130 in the housing 100.

[0040] The groove wall of the limiting groove 140 stops the limiting block 340, preventing the sleeve 300 from rotating relative to the housing 100. The limiting groove 140 extends axially along the guide rod 200. During the sliding process of the sleeve 300, the limiting block 340 is always placed in the limiting groove 140, ensuring that the limiting groove 140 can always prevent the limiting block 340 from rotating during the sliding process of the sleeve 300.

[0041] In some other embodiments, the limiting block 340 may be disposed on the cavity wall of the housing 100, and the limiting groove 140 may be disposed on the sleeve 300, with the limiting block 340 extending axially along the guide rod 200.

[0042] The screwdriver handle with a blade storage function of this utility model has a limiting block 340 on one of the sleeve 300 and the cavity wall of the housing 100, and a limiting groove 140 that cooperates with the limiting block 340 on the other. The limiting block 340 and the limiting groove 140 cooperate to restrict the rotation of the sleeve 300 relative to the housing 100. Since the blade holder 400 is mounted on the sleeve 300 with restricted rotation, the blade holder 400 will not rotate relative to the housing 100 when the user installs the blade.

[0043] In this embodiment, one end of the guide rod 200 is knurled, and the bottom of the cavity 130 is provided with a mounting hole. The knurled end of the guide rod 200 is pressed into the mounting hole to fix the guide rod 200 to the housing 100. In some other embodiments, the guide rod 200 may also be bonded to the housing 100.

[0044] In this preferred embodiment, multiple limiting grooves 140 are provided, and multiple limiting blocks 340 are provided accordingly. The multiple limiting grooves 140 or limiting blocks 340 are circumferentially distributed on the cavity wall of the housing 100.

[0045] In this embodiment, there are two limiting grooves 140 and two corresponding limiting blocks 340.

[0046] In some other embodiments, the limiting groove 140 and the limiting block 340 may also be two or more.

[0047] In one embodiment, based on the foregoing embodiments, such as Figures 2 to 8 As shown, the limiting block 340 or limiting groove 140 on the cavity wall of the housing 100 extends to the opening 131. The guide rod 200 includes a rod body 201 and a boss 202 that protrudes radially from the rod body 201. The boss 202 is located at one end of the rod body 201 near the opening 131. The sleeve 300 includes a sleeve hole 350, which is a stepped hole. It has a first through diameter D1 and a second through diameter D2 arranged sequentially from the sleeve head 310 to the sleeve tail 330. The second through diameter D2 is larger than the first through diameter D1. The first through diameter D1 is adapted to the diameter of the rod body 201 and restricts the boss 202 from passing through, so that the sleeve head 310 in the open state is confined in the cavity 130.

[0048] The limiting block 340 or limiting groove 140 on the cavity wall of the housing 100 extends to the opening 131, so that the sleeve 300 can extend out of the cavity 130 as much as possible under the premise of being prevented from rotating, which makes it easier to pick up and put down the cutting head on the cutting head holder 400. The sleeve head 310 is limited in the cavity 130, which avoids the separation of the limiting block 340 and the limiting groove 140, and ensures that the limiting block 340 and the limiting groove 140 can always maintain a cooperative relationship when the sleeve 300 is retracted into the cavity 130.

[0049] In one embodiment, based on all the foregoing embodiments, such as Figure 2 , Figure 3 , Figures 5 to 7 As shown, the sleeve head 310 includes a radially extending support ring 311, a limiting block 340 is disposed on the support ring 311, and a limiting groove 140 is disposed on the cavity wall of the housing 100.

[0050] Because the housing 100 has a cavity 130 to accommodate the cutter head holder 400, which is used to fix the cutter head, there is a large linear distance between the sleeve 300 and the cavity wall of the housing 100. To prevent the limiting block 340 from extending too far from the sleeve head 310 toward the cavity wall of the housing 100, which would result in insufficient strength of the limiting block 340, a support ring 311 is provided at the sleeve head 310. The radial extension of the support ring 311 ensures that the support ring 311 has sufficient strength. The limiting block 340 is set on the support ring 311, which also means that the extension of the limiting block 340 does not need to be too long, which helps to ensure the strength of the limiting block 340, thereby improving the anti-rotation effect between the sleeve 300 and the housing 100.

[0051] In one embodiment, unlike the previous embodiment, the sleeve head 310 includes a radially extending support ring 311, a limiting groove 140 is provided on the support ring 311, and a limiting block 340 is provided on the cavity wall of the housing 100.

[0052] In this way, the sleeve head 310 does not need to be provided with a large-sized limiting groove 140 structure extending towards the cavity wall of the housing 100, which helps to improve the strength of the groove wall of the limiting groove 140, ensure the anti-rotation effect of the limiting groove 140 on the limiting block 340, and thus improve the anti-rotation effect between the sleeve 300 and the housing 100.

[0053] In one embodiment, based on the two embodiments described above, such as Figure 2 , Figure 3 , Figure 9 As shown, the screwdriver handle also includes a support sleeve 700, which is sleeved on the guide rod 200 and placed at the bottom of the cavity 130. The support sleeve 700 includes an annular bottom ring portion 710 and a cylindrical portion 720 disposed on the bottom ring. The elastic element 600 is a compression spring, which is pre-tightened between the support ring 311 and the support sleeve 700. One end of the elastic element 600 is sleeved on the cylindrical portion 720 and supported on the bottom ring portion 710.

[0054] The cylindrical portion 720 is adapted to the inner diameter of the compression spring, allowing the support sleeve 700 to better engage with one end of the elastic element 600, reducing the wobbling of the elastic element 600 during use. One end of the elastic element 600 is also supported by the bottom ring portion 710, allowing the support sleeve 700 to be pressed against the bottom of the cavity 130, preventing the support sleeve 700 from moving and causing the cylindrical portion 720 to disengage from its engaging position with the elastic element 600.

[0055] In this preferred embodiment, such as Figure 2 , Figure 3 , Figure 9 As shown, the sleeve head 310 also includes a sleeve 312 located at the center of the support ring 311, and the other end of the elastic element 600 is sleeved on the sleeve 312 and supported by the support ring 311.

[0056] This design allows the other end of the elastic element 600 to better engage with the sleeve head 310, reducing the shaking of the end of the elastic element 600 near the sleeve head 310 during use.

[0057] In another preferred embodiment, such as Figure 2 , Figure 3 , Figure 9 As shown, the support sleeve 700 is provided with a through hole 730 for connecting the guide rod 200. The diameter of the through hole 730 gradually decreases along the extension direction, and the minimum diameter of the through hole 730 is greater than the diameter of the guide rod 200.

[0058] In this embodiment, the diameter of the through hole 730 gradually decreases in the direction from the opening 131 to the bottom of the cavity 130.

[0059] In some other embodiments, the diameter of the through hole 730 may also gradually decrease in the direction from the bottom of the cavity 130 toward the opening 131.

[0060] With this configuration, the support sleeve 700 can slide relative to the guide rod 200, making it easier to install the support sleeve 700 on the guide rod 200. At the same time, the diameter of the through hole 730 gradually decreases along the extension direction, and the minimum diameter of the through hole 730 is greater than the diameter of the guide rod 200, making it less likely for the support sleeve 700 to get stuck with the guide rod 200. This ensures that the installed support sleeve 700 can fit tightly against the bottom of the cavity 130 under the action of the elastic element 600.

[0061] In one embodiment, based on all the foregoing embodiments, such as Figure 2 , Figure 3 , Figure 10 , Figure 11 As shown, the screwdriver handle also includes a limiting sleeve 800, which is located between the end cap 500 and the head holder 400. The sleeve 300 has a first tube body 360 and a second tube body 370 arranged sequentially from head to tail. The first tube body 360 protrudes radially from the second tube body 370. The head holder 400 is fitted onto the second tube body 370 in a rotationally restricted manner. The head of the head holder 400 abuts against the first tube body 360. The limiting sleeve 800 is fitted onto the second tube body 370 and limited at the tail of the head holder 400, so that the head holder 400 is limited in the middle 320 of the sleeve.

[0062] The specific implementation of the cutter head holder 400 being rotatably fitted onto the second tube body 370 has been described in the foregoing embodiments and will not be repeated here.

[0063] The position of the limit of the cutter head holder 400 is determined by the position of the first tube body 360 on the sleeve 300.

[0064] By cooperating with the limiting sleeve 800 and the sleeve 300, the cutter head holder 400 can be limited in the middle 320 of the sleeve, so that the cutting head holder 400 will not slide relative to the sleeve 300 when the cutting head is picked up or put on; the cutter head holder 400 also does not need to be fixed to the sleeve 300 by adhesive.

[0065] In this embodiment, the end cap 500, the limiting sleeve 800, and the sleeve 300 are fixedly connected to form a whole by ultrasonic welding. The ultrasonic welding process is performed after the connection of the sleeve 300 to the guide rod 200, the connection of the guide rod 200 to the housing 100, and the connection of the cutter head holder 400 to the sleeve 300 are completed.

[0066] In one embodiment, based on all the foregoing embodiments, such as Figures 2 to 4 , Figure 9As shown, elastic buckles 121 are provided on opposite sides of the tail end 120 of the housing 100, and a slot 510 is provided on the end cover 500. One end of the elastic buckle 121 engages with the slot 510 so that the end cover 500 covers the opening 131.

[0067] The elastic buckle 121 includes a movable elastic piece connected to the housing 100 and a hook provided on the movable elastic piece. The end cover 500 has a groove 510 that cooperates with the hook. When the end cover 500 is closed on the opening 131, the movable elastic piece is pressed, causing the hook to disengage from the groove 510. The movable elastic piece is reset, causing the buckle to extend into the groove 510.

[0068] When unlocking the end cap 500, the user simultaneously presses the elastic latches 121 on both sides, causing the elastic latches 121 to unlock from the slot 510. Under the reset force of the elastic element 600, the sleeve 300 drives the end cap 500 and the tool holder 400 to disengage from the cavity 130. When closing the end cap 500, the user applies force to push the end cap 500 towards the cavity 130. When the end cap 500 is located at the tail end 120 of the housing 100, the force of the end cap 500 on the elastic latches 121 causes the movable elastic piece to be compressed and deformed inward. After the end cap 500 is closed, the slot 510 and the hook are aligned, and the reset of the movable elastic piece causes the hook to extend into the slot 510.

[0069] Since the elastic buckle 121 is located on opposite sides of the tail end 120 of the housing 100, the elastic buckle 121 cannot be unlocked from one side, which reduces the probability of the screwdriver handle being accidentally unlocked. At the same time, it also provides a locking guarantee for the screwdriver handle. When one side of the elastic buckle 121 is damaged, the screwdriver handle can still lock the end cover 500 and the housing 100.

[0070] In this preferred embodiment, two limiting grooves 140 are provided, and two corresponding limiting blocks 340 are provided. Any limiting block 340 or limiting groove 140 on the housing 100 is disposed between two elastic buckles 121.

[0071] This design ensures that the limiting block 340 or limiting groove 140 on the housing 100 will not interfere with the elastic buckle 121, thereby allowing the limiting block 340 or limiting groove 140 to extend to the opening 131. This ensures that the sleeve 300 can stop rotating relative to the housing 100 throughout the entire process of moving relative to the cavity 130 of the housing 100. At the same time, the limiting block 340 or limiting groove 140 on the housing 100 is provided in two parts, which further guarantees the anti-rotation of the sleeve 300. Even if the housing 100 deforms on one side, the sleeve 300 will not be able to rotate relative to the housing 100.

[0072] The present invention also provides a screwdriver, including a screwdriver handle of any of the foregoing embodiments and a screwdriver tip insertion device 900 for mounting the tip, the screwdriver tip insertion device 900 being disposed at the head end 110 of the housing 100.

[0073] The cutter head insertion device 900 is used to insert cutter heads and has a cutter head insertion groove; it can also be used to insert an extension rod to extend the working length of the cutter head. The extension rod is inserted into the cutter head insertion groove of the cutter head insertion device 900 and has a slot for inserting cutter heads.

[0074] The blade insertion device 900 can be a fixed structure that cannot rotate relative to the housing 100, or it can be a ratchet structure that can rotate relative to the housing 100.

[0075] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A screwdriver handle with a blade storage function, including: A housing having a cavity having an opening that opens toward the tail end of the housing; The guide rod is fixed in the cavity and extends from the bottom of the cavity toward the opening. The sleeve is slidably fitted onto the guide rod; The cutter head holder is mounted in the middle of the sleeve with limited rotation; End cap, fixed to the tail of the sleeve; and, The elastic element is pre-tightened between the sleeve head and the bottom of the cavity. The sleeve has a retracted state and an open state. In the stowed state, the end cap covers the opening, and the cutter head holder is housed in the cavity; In the open state, the end cap separates from the opening, the elastic element releases and pushes the sleeve to move, causing the cutter head holder to disengage from the cavity. The feature is that a limiting block is radially protruding on one of the sleeve and the cavity wall of the housing, and a limiting groove that cooperates with the limiting block is provided on the other, and the limiting block or limiting groove on the cavity wall of the housing extends axially along the guide rod.

2. The screwdriver handle as described in claim 1, characterized in that, The sleeve head includes a radially extending support ring, and the limiting block or the limiting groove is disposed on the support ring.

3. The screwdriver handle as described in claim 2, characterized in that, It also includes a support sleeve, which is sleeved on the guide rod and placed at the bottom of the cavity. The support sleeve includes an annular bottom ring and a cylindrical part disposed on the bottom ring. The elastic element is a compression spring, which is pre-tightened between the support ring and the support sleeve. One end of the elastic element is sleeved on the cylindrical part and supported by the bottom ring.

4. The screwdriver handle as described in claim 3, characterized in that, The sleeve head also includes a sleeve sleeve located at the center of the support ring, and the other end of the elastic element is sleeved on the sleeve sleeve and supported by the support ring.

5. The screwdriver handle as described in claim 3, characterized in that, The support sleeve has a through hole for fitting the guide rod. The diameter of the through hole gradually decreases along the extension direction, and the minimum diameter of the through hole is greater than the diameter of the guide rod.

6. The screwdriver handle as described in claim 1, characterized in that, The limiting block or limiting groove on the cavity wall of the housing extends to the opening. The guide rod includes a rod body and a boss that protrudes radially from the rod body. The boss is located at one end of the rod body near the opening. The sleeve includes a connecting hole. The connecting hole has a first diameter and a second diameter arranged sequentially from the head to the tail of the sleeve. The second diameter is larger than the first diameter. The first diameter is adapted to the diameter of the rod body and restricts the passage of the boss, so that the open head of the sleeve is confined in the cavity.

7. The screwdriver handle as described in claim 1, characterized in that, It also includes a limiting sleeve located between the end cap and the cutter head holder. The sleeve has a first tube and a second tube arranged sequentially from head to tail. The first tube protrudes radially from the second tube. The cutter head holder is rotatably fitted onto the second tube. The head of the cutter head holder abuts against the first tube. The limiting sleeve is fitted onto the second tube and limits the tail of the cutter head holder.

8. The screwdriver handle as described in claim 1, characterized in that, The shell has elastic buckles on opposite sides at its tail end, and the end cap has a slot. One end of the elastic buckle engages with the slot so that the end cap covers the opening.

9. The screwdriver handle as described in claim 8, characterized in that, Two limiting grooves are provided, and two limiting blocks are provided accordingly. Any of the limiting blocks or limiting grooves on the housing is disposed between the two elastic buckles.

10. A screwdriver, characterized in that, The screwdriver includes a screwdriver handle as described in any one of claims 1 to 9 and a screwdriver tip insertion device for mounting a screwdriver tip, the screwdriver tip insertion device being located at the front end of the housing.

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