Z-shaped electric screw driver end mechanism

Abstract

The utility model discloses a Z-shaped electric screw driver end mechanism. According to the scheme, the screwdriver comprises a cavity formed by an upper cover and a base, a driving gear piece and a driven gear set at the base end which are vertically meshed are arranged in the cavity, and the bottom of the driven gear set is connected with a screwdriver head; the first shaft seat is connected with the driving gear piece and clamped in the upper cover, and the driven gear set is limited by the driven limiting structure and fixed to the base. According to the combination of the driving gear piece and the driven gear set, the bevel gears are adopted as the gears, the gears are perpendicularly meshed, a three-dimensional structure is formed in the cavity, the whole is more compact, and the precision is higher. The driven limiting structure is rigidly connected with the base, each driven gear of the driven gear set is independently fixed, parts can be conveniently and independently replaced, and the service life is longer.

Description

Technical Field

[0001] The present invention relates to the technical field of electric tools, and in particular to a Z-shaped electric screwdriver end mechanism. Background Art

[0002] Electric screwdrivers are also called electric screwdrivers and electric screwdrivers. They are electric tools used to tighten and loosen screws and nuts. They are equipped with a mechanism to adjust and limit torque and are mainly used in assembly lines. Due to their high efficiency, they have become an indispensable tool in the assembly industry.

[0003] The Z-type electric screwdriver is mainly used for assembling mobile phone parts. The traditional coaxial handle and bit are changed to eccentric ones to avoid the inconvenience of operation caused by narrow space, making the operation of the electric screwdriver more convenient and improving the operability of the electric screwdriver.

[0004] The Chinese patent with publication number CN217703201U and authorization announcement date of November 1, 2022 discloses a Z-shaped LED auxiliary lighting precision electric screwdriver, including a handle, a Z-shaped connecting assembly and a screwdriver bit, one end of the Z-shaped connecting assembly is threadedly connected to the handle, and the other end is interference fit with the screwdriver bit, the Z-shaped connecting assembly includes a connecting sleeve and a fixing plate, one end of the connecting sleeve is threadedly connected to the handle, and the other end is vertically fixed to the fixing plate, the screwdriver bit is vertically fixed to the fixing plate away from the end of the connecting sleeve, and the electric screwdriver also includes a lighting assembly, and the lighting assembly is fixedly connected to the fixing plate. The shortcomings of the comparative document are that the gear sets are arranged in the same plane, and there are gaps between the gears, which makes the overall precision low and unstable; at the same time, if one of the gears is damaged, it is difficult to replace, affecting efficiency.

[0005] Therefore, a Z-shaped electric screwdriver is needed, the structure of the end mechanism of which is more stable and the precision is higher. Summary of the invention

[0006] In order to solve the above problems, this scheme provides a Z-shaped electric screwdriver end mechanism.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted in this scheme is: a Z-shaped electric screwdriver end mechanism, including a cavity formed by an upper cover and a base, the cavity includes a vertically meshing driving gear member and a driven gear group at the base end, and the bottom of the driven gear group is connected to the screwdriver head; the first shaft seat is connected to the driving gear member and is clamped in the upper cover, and the driven limiting structure limits the driven gear group to be fixed on the base;

[0008] The driven limiting structure includes a second shaft seat, a third shaft seat and a fourth shaft seat, which are used to fix the driven gear set;

[0009] The driven gear set includes a first driven gear, a second driven gear and a third driven gear;

[0010] The second shaft seat is fixed on the base and connected to the first driven gear; the gear end of the first driven gear is vertically meshed with the gear end of the driving gear member, and the shaft end is connected to the shaft end of the second driven gear through a coupling;

[0011] The third shaft seat is fixed on the base and connected to the second driven gear; the gear end of the second driven gear is vertically meshed with the gear end of the third driven gear;

[0012] The fourth shaft seat is embedded in the groove on the top of the base and connected to the third driven gear, and the shaft end of the third driven gear is connected to the bit.

[0013] Furthermore, the driving gear member and the driven gear set are bevel gear structures.

[0014] Furthermore, a connecting structure is provided at the shaft ends of the first driven gear and the second driven gear, and the connecting structure includes a convex key provided at the shaft end of the first driven gear and a concave portion provided at the shaft end of the second driven gear.

[0015] Furthermore, the second shaft seat and the third shaft seat are two-section structures, the top is integrally formed with the upper cover, and the bottom is integrally formed with the base, and the middle driven gear is clamped between the second shaft seat and the third shaft seat, and one side of the middle driven gear engages with the driving gear member, and the other side engages with the bottom driven gear.

[0016] Furthermore, the base includes a first connection hole for fixing the upper cover and a second connection hole for fixing the driven limiting structure.

[0017] In summary, this solution has the following advantages:

[0018] The combination of the driving gear and the driven gear set provided in this solution adopts bevel gears, and each gear is vertically meshed to form a three-dimensional structure in the cavity, which is more compact and has higher precision.

[0019] The driven limiting structure provided in this solution is rigidly connected to the base, and independently fixes each driven gear of the driven gear set, so that it is convenient to replace parts individually and has a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the end mechanism of a Z-type electric screwdriver;

[0021] Figure 2 It is a schematic diagram of another angle of view of the end mechanism of the Z-type electric screwdriver;

[0022] Figure 3 It is a schematic diagram of the positions of the driving gear member and the driven gear set;

[0023] Figure 4 It is a cross-sectional view of the end mechanism of a Z-type electric screwdriver;

[0024] Figure 5 is a positional cross-sectional view of the first driven gear and the second driven gear in Embodiment 2;

[0025] Figure 6 It is a cross-sectional view of the end mechanism of the Z-type electric screwdriver in Example 3.

[0026] in:

[0027] 1. upper cover; 11. through hole; 111. connecting part;

[0028] 2. Base; 21. First connection hole; 22. Second connection hole; 23. Groove;

[0029] 3. Batch bit;

[0030] 100, driving gear member; 110, first shaft seat;

[0031] 200, driven gear set; 201, connecting structure; 2011, convex key; 2012, concave portion; 210, first driven gear; 220, second driven gear; 230, third driven gear; 240, middle driven gear; 250, bottom driven gear;

[0032] 300, driven limiting structure; 310, second shaft seat; 320, third shaft seat; 330, fourth shaft seat; 340, coupling. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0034] Embodiment 1:

[0035] A Z-type electric screwdriver end mechanism, such as Figure 1-4 As shown, it includes a cavity formed by an upper cover 1 and a base 2, and the cavity includes a vertically meshing driving gear member 100 and a driven gear set 200 at the end of the base 2.

[0036] In the prior art, the driving gear and the driven gear set 200 are arranged in the same plane, and there is a gap between the gears, which makes the overall accuracy low and unstable.

[0037] The combination of the driving gear member 100 and the driven gear set 200 provided in this solution adopts bevel gears, and each gear is vertically meshed with each other to form a three-dimensional structure in the cavity, which is more compact and has higher precision.

[0038] In this scheme, if Figure 1 , Figure 3 and Figure 4As shown, a first shaft seat 110 connected to the driving gear member 100 is clamped in the through hole 11 of the upper cover 1, and the shaft end of the driving gear member 100 faces the outside of the through hole 11, and the gear end is limited in the cavity.

[0039] A connecting portion 111 is disposed at the upper end of the through hole 11 for connecting to a handle.

[0040] By rotating the shaft end of the driving gear member 100 , the gear end of the driving gear member 100 drives the driven gear set 200 to rotate.

[0041] like Figure 2 and 3 As shown, the base 2 includes a first connection hole 21 for fixing the upper cover 1 and a second connection hole 22 for fixing the driven limiting structure 300 .

[0042] like Figure 3 and 4 As shown, the driven limiting structure 300 includes a second shaft seat 310 , a third shaft seat 320 and a fourth shaft seat 330 , which are used to fix the driven gear set 200 .

[0043] In the prior art, the driven gear set 200 meshes on the same plane. If one of the gears is damaged, the entire gear set will become loose during the removal process, making replacement difficult and affecting efficiency.

[0044] The driven limiting structure 300 provided in the present solution is rigidly connected to the base 2, and independently fixes each driven gear of the driven gear set 200, so that it is convenient to replace parts individually and has a longer service life.

[0045] In the structural setting of this solution, the driven gear set 200 includes a first driven gear 210 , a second driven gear 220 and a third driven gear 230 .

[0046] The second shaft seat 310 is fixed on the base 2 and connected to the first driven gear 210. The gear end of the first driven gear 210 is vertically meshed with the gear end of the driving gear member 100, and the shaft end is connected to the shaft end of the second driven gear 220 through a coupling 340.

[0047] The coupling 340 is mainly used to connect the shaft ends of the first driven gear 210 and the second driven gear 220. There is no specific requirement for its shape, which can be cylindrical, ellipsoidal or cubic. In the embodiment, the coupling 340 is cylindrical.

[0048] The third shaft seat 320 is fixed on the base 2 and connected to the second driven gear 220. The gear end of the second driven gear 220 is vertically meshed with the gear end of the third driven gear 230.

[0049] The fourth shaft seat 330 is embedded in the groove 23 on the top of the base 2 and connected to the third driven gear 230 . The shaft end of the third driven gear 230 is connected to the screwdriver bit 3 .

[0050] The shaft seat is mainly used to fix the shaft end of the gear. This structure is a prior art that can be found by the staff in this field, and the structure and working principle are not described in detail here.

[0051] Specifically, the shaft end of the driving gear member 100 is rotated, and the gear end of the driving gear member 100 drives the vertically meshed first driven gear 210 to rotate. The shaft end of the first driven gear 210 is linked to the second driven gear 220 in the coupling 340 to drive the third driven gear 230 to rotate. The screwdriver bit 3 at the bottom of the third driven gear 230 completes the assembly of the screw or nut under the rotation.

[0052] Further explanation in combination with its usage mechanism:

[0053] The shaft end of the driving gear member 100 is rotated, and the gear end of the driving gear member 100 drives the vertically meshed first driven gear 210 to rotate. The shaft end of the first driven gear 210 drives the second driven gear 220 in the coupling 340 to drive the third driven gear 230 to rotate. The screwdriver bit 3 at the bottom of the third driven gear 230 completes the assembly of the screw or nut under the rotation.

[0054] Example 2

[0055] The features of this embodiment that are different from those of Embodiment 1 are as follows:

[0056] In order to prevent the first driven gear 210 or the second driven gear 220 and the coupling 340 from loosening during long-term use, so that they cannot be linked at the same time or the accuracy is reduced, reference Figure 5 In this embodiment, a connecting structure 201 is provided at the shaft ends of the first driven gear 210 and the second driven gear 220 .

[0057] Through the limiting of the connection structure 201, the first driven gear 210 and the second driven gear 220 will not be unable to move in conjunction or reduce the accuracy due to looseness in the middle of the coupling 340, and the overall structure is more solid.

[0058] The shaft ends of the first driven gear 210 and the second driven gear 220 may be connected by a keyway or a cross connection or other feasible connection methods.

[0059] In this embodiment, the shaft ends of the first driven gear 210 and the second driven gear 220 are connected via a keyway, a convex key 2011 is provided on the shaft end of the first driven gear 210 , and a concave portion 2012 is provided on the shaft end of the second driven gear 220 .

[0060] Example 3

[0061] The features of this embodiment that are different from those of Embodiment 1 and Embodiment 2 are as follows:

[0062] In this embodiment, reference Figure 6 , the second shaft seat 310 and the third shaft seat 320 are two-stage structures, the top is integrally formed with the upper cover 1, and the bottom is integrally formed with the base 2. At the same time, the shaft ends of the first driven gear 210 and the second driven gear 220 in embodiment 1 are integrated;

[0063] That is, without the need for a coupling, the middle driven gear 240 is directly clamped between the second shaft seat 310 and the third shaft seat 320 , and one side of the middle driven gear 240 is meshed with the driving gear member 100 , and the other side is meshed with the bottom driven gear 250 .

[0064] Specifically, the driving gear 100 rotates, and the middle driven gear 240 drives the bottom driven gear 250 to rotate, and the screwdriver bit 3 below the bottom driven gear 250 completes the assembly of the screw or nut under the rotation.

[0065] The structure provided in this embodiment can fix the middle driven gear 240 by means of upper and lower limit positions, and can better avoid the problem that the first driven gear 210 and the second driven gear 220 are loose in the coupling and cannot be linked. At the same time, the overall installation process is simpler and more convenient than the steps in Example 1.

[0066] The installation of the Z-type electric screwdriver end mechanism in Example 1 includes the following steps:

[0067] S1, fix the second shaft seat and the third shaft seat on the base through the connecting piece;

[0068] S2, connecting the driving gear member to the first shaft seat;

[0069] S3, connecting the third driven gear to the fourth shaft seat;

[0070] S4, connecting the first driven gear to the second shaft seat and limiting its shaft end in the coupling;

[0071] S5, connecting the second driven gear to the third shaft seat and limiting its shaft end in the coupling;

[0072] S6. After checking that all gears are meshed in place, use connectors to fix the top cover to the base.

[0073] In this embodiment, the installation of the Z-type electric screwdriver end mechanism includes the following steps:

[0074] S1, connecting the driving gear member to the first shaft seat;

[0075] S2, connect the bottom driven gear to the fourth shaft seat;

[0076] S3, the shaft end of the middle driven wheel is placed in the openings at the base ends of the second shaft seat and the third shaft seat;

[0077] S4. After checking that all gears are meshed in place, use connectors to fix the top cover to the base.

[0078] In this embodiment, by configuring the shaft seat to be a two-stage structure and integrating the structure with the base 2 and the upper cover 1 , the assembly time is effectively shortened and the actual use is more convenient.

[0079] Further explanation in combination with its usage mechanism:

[0080] The shaft end of the driving gear member 100 is rotated, and the gear end of the driving gear member 100 drives the vertically meshed middle driven gear 240 to rotate, and the other end gear of the middle driven gear 240 drives the meshed bottom driven gear 250 to rotate, and the screwdriver bit 3 at the bottom of the bottom driven gear 250 completes the assembly of the screw or nut under the rotation.

[0081] In summary, the combination of the driving gear member and the driven gear set 200 provided in the present application adopts bevel gears, and each gear is vertically meshed with each other to form a three-dimensional structure in the cavity, which is more compact and has higher precision.

[0082] The driven limiting structure provided in the present application is rigidly connected to the base, and independently fixes each driven gear of the driven gear set, so that it is convenient to replace parts individually and has a longer service life.

[0083] The above implementation is only to illustrate the technical concept and features of this solution, and its purpose is to enable people familiar with this technology to understand the content of this solution and implement it accordingly, and it cannot be used to limit the protection scope of this solution. Any equivalent transformation or modification made according to the spirit of this solution should be included in the protection scope of this solution.

[0084] In the description of this scheme, it should be noted that, unless otherwise clearly stipulated 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 an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0085] For those skilled in the art, the specific meanings of the above terms in this solution can be understood according to specific circumstances.

[0086] It should be understood that the above-mentioned embodiments are merely illustrative and not restrictive. Without departing from the basic principles of the present solution, various obvious or equivalent modifications or substitutions that can be made by technicians in this field to the above details will be included in the protection scope of the present solution.

Claims

1. A Z-shaped electric screwdriver end mechanism, comprising a cavity formed by an upper cover (1) and a base (2), characterized in that: The cavity includes a vertically meshing driving gear member (100) and a driven gear group (200) at the end of the base (2), wherein the bottom of the driven gear group (200) is connected to the screwdriver bit (3); a first shaft seat (110) is connected to the driving gear member (100) and is clamped in the upper cover (1); and a driven limiting structure (300) limits the driven gear group (200) and fixes it on the base (2); The driven limiting structure (300) comprises a second shaft seat (310), a third shaft seat (320) and a fourth shaft seat (330), and is used to fix the driven gear set (200); The driven gear set (200) includes a first driven gear (210), a second driven gear (220) and a third driven gear (230); The second shaft seat (310) is fixed on the base (2) and connected to the first driven gear (210); the gear end of the first driven gear (210) is vertically meshed with the gear end of the driving gear member (100), and the shaft end is connected to the shaft end of the second driven gear (220) via a coupling (340); The third shaft seat (320) is fixed on the base (2) and connected to the second driven gear (220); the gear end of the second driven gear (220) is vertically meshed with the gear end of the third driven gear (230); The fourth shaft seat (330) is embedded in the groove (23) at the top of the base (2) and is connected to the third driven gear (230). The shaft end of the third driven gear (230) is connected to the screwdriver bit (3).

2. The Z-shaped electric screwdriver end mechanism according to claim 1, characterized in that: The driving gear member (100) and the driven gear set (200) are bevel gear structures.

3. The Z-shaped electric screwdriver end mechanism according to claim 1, characterized in that: A connecting structure (201) is provided at the shaft ends of the first driven gear (210) and the second driven gear (220), wherein the connecting structure (201) comprises a convex key (2011) provided at the shaft end of the first driven gear (210) and a concave portion (2012) provided at the shaft end of the second driven gear (220).

4. The Z-shaped electric screwdriver end mechanism according to claim 1, characterized in that: The second shaft seat (310) and the third shaft seat (320) are two-stage structures, the top is integrally formed with the upper cover (1), and the bottom is integrally formed with the base (2), the middle driven gear (240) is clamped between the second shaft seat (310) and the third shaft seat (320), one side of the middle driven gear (240) is meshed with the driving gear member (100), and the other side is meshed with the bottom driven gear (250).

5. The Z-shaped electric screwdriver end mechanism according to claim 1, characterized in that: The base (2) comprises a first connection hole (21) for fixing the upper cover (1) and a second connection hole (22) for fixing the driven limiting structure (300).

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