Battery pack of electric wrench

Abstract

The utility model provides an electric wrench battery pack, and belongs to the field of electric tools. The problem that an existing battery pack is poor in experience is solved. The electric wrench battery pack comprises an approximately rectangular shell, a battery assembly horizontally arranged in the shell and a circuit board used for controlling the battery assembly, the battery assembly is located on the lower side of the circuit board, and a positive terminal and a negative terminal which are arranged in parallel in the width direction of the shell are arranged on the circuit board. The upper side of the shell is a positioning seat used for being connected with an electric wrench, two slots are formed in the top of the positioning seat, the upper end of the positive terminal and the upper end of the negative terminal are located in the two slots respectively, a voice sounder is electrically connected to the top face of the circuit board, and a plurality of small sounding holes are formed in one long side wall of the shell and penetrate through the shell in the width direction of the shell. And the position of each small sound outlet hole is higher than the circuit board but lower than the positioning seat. The battery pack of the electric wrench is good in experience.

Description

Technical Field

[0001] The utility model belongs to the field of electric tools and relates to an electric wrench, in particular to an electric wrench battery pack. Background Art

[0002] The electric wrench battery pack is an important component of the electric wrench, providing the electric wrench with the required electrical energy.

[0003] The above-mentioned battery pack is a dual-parallel battery pack for electric tools disclosed in the China Patent Library (application number: 202210720036.1), comprising: a battery pack upper cover, on the surface of which two battery pack lower covers are installed, and the two battery pack lower covers are connected by self-tapping screws; a battery pack middle frame, inside of which a lithium battery is installed through a battery pack steel ring; a circuit board assembly, arranged above the battery pack middle frame, for controlling the lithium battery; a connector assembly, for docking the battery pack with the electric tool; an airway circulation structure, for dissipating the heat accumulated in the battery; a battery isolation protection assembly, for separating adjacent lithium batteries and improving the locking stability of the battery pack middle frame on the lithium battery; a sealing protection assembly, for improving the sealing performance in the battery pack.

[0004] At present, the operating status of the electric wrench generally needs to be judged by the operator with the naked eye, which is extremely unfriendly to some novices and affects the overall experience. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems in the existing technology and to provide an electric wrench battery pack with good user experience.

[0006] The purpose of the utility model can be achieved through the following technical solutions: an electric wrench battery pack, comprising a roughly rectangular shell and a battery assembly horizontally arranged in the shell and a circuit board for controlling the battery assembly, the battery assembly is located on the lower side of the circuit board, the circuit board is provided with a positive terminal and a negative terminal arranged in parallel along the width direction of the shell, the upper side of the shell is a positioning seat for connecting the electric wrench, the top of the positioning seat is provided with two slots, and the upper ends of the positive terminal and the negative terminal are respectively located in the two slots, and it is characterized in that a voice generator is electrically connected to the top surface of the circuit board, and a plurality of sound holes are provided on one of the long side walls of the shell, and the sound holes are arranged through the width direction of the shell; the position of each sound hole is higher than the circuit board but lower than the positioning seat.

[0007] In actual use, the positive and negative poles of the controller connected to the electric wrench motor are respectively inserted into the positive terminal and the negative terminal, so that the circuit board can communicate with the controller, and the motor running status (such as forward or reverse) is broadcast through the voice speaker, so that the operator can clearly know the working status of the electric wrench. This is not only convenient to use, but also makes the use experience of the electric wrench stronger.

[0008] At the same time, the position of each sound hole is set higher than the circuit board but lower than the positioning seat. This not only makes the sound hole completely exposed to the outside, so that the operator can clearly hear the broadcast of the voice speaker, but also makes the sound hole staggered with the battery assembly, which plays a certain waterproof role.

[0009] In the above-mentioned electric wrench battery pack, the above-mentioned sound holes are divided into multiple rows arranged in parallel along the height direction of the shell, and each row of sound holes includes multiple sound holes distributed along the length direction of the shell, so that the sound holes are evenly arranged, making the sound more concentrated and uniform, and providing a better user experience of the electric wrench.

[0010] In the above-mentioned electric wrench battery pack, the outer surface of the long side wall of the shell with the sound hole has a long strip-shaped guide surface, and the guide surface and the shell have the same length extension direction. The guide surface is composed of an upper vertical plane, an inclined surface and a lower vertical plane that are continuously distributed from top to bottom, and the inclined surface is arranged obliquely downward, and the sound hole is arranged on the upper vertical plane. The above-mentioned design can effectively prevent water from gathering at the sound hole, further enhancing the waterproof effect.

[0011] In the above-mentioned electric wrench battery pack, the sound hole is arranged obliquely downward, so that the inner side of the sound hole is higher than the outer side, thereby achieving a better waterproof effect.

[0012] In the above-mentioned electric wrench battery pack, the battery assembly includes an insulating bracket and a plurality of horizontally arranged cylindrical lithium batteries. The lithium batteries and the above-mentioned circuit board are fixed on the insulating bracket to simplify the structure and facilitate assembly.

[0013] In the above-mentioned electric wrench battery pack, the insulating bracket is composed of two plastic blocks arranged side by side along the width direction of the shell, each plastic block is provided with a mounting hole along the width direction of the shell, and the shape and size of the mounting hole are matched with the lithium battery, the number of mounting holes on each plastic block is the same as that of the lithium battery, and the two ends of the lithium battery are respectively clamped in the corresponding mounting holes; the width sides of the circuit board are respectively pressed against the top surfaces of the two plastic blocks. The above-mentioned design facilitates the positioning of the circuit board and the lithium battery.

[0014] In the above-mentioned electric wrench battery pack, the bottom surface of the plastic block is tightly pressed against the bottom wall of the outer shell, and a positioning groove with a long strip shape and a roughly L-shaped cross-section is formed on the inner wall of the outer shell. The length extension direction of the positioning groove and the outer shell is consistent. There are two positioning grooves and they are distributed along the width direction of the outer shell, and the top surfaces on both sides of the width of the circuit board are respectively pressed against the inner walls of the two positioning grooves, so that the circuit board and the plastic block are clamped and positioned between the inner wall of the positioning groove and the bottom wall of the outer shell at the same time, so as to further simplify the structure and facilitate assembly.

[0015] Compared with the prior art, this electric wrench battery pack has the following advantages:

[0016] 1. The positive and negative poles of the controller connected to the electric wrench motor are respectively inserted into the positive terminal and the negative terminal, so that the circuit board can communicate with the controller, and the motor running status (such as forward or reverse) is broadcast through the voice speaker, so that the operator can clearly know the working status of the electric wrench. This is not only convenient to use, but also makes the use experience of the electric wrench stronger.

[0017] 2. The position of each sound hole is located on the upper side of the circuit board but on the lower side of the positioning seat. This not only makes the sound hole completely exposed to the outside, so that the operator can clearly hear the broadcast of the voice speaker, but also makes the sound hole staggered with the battery assembly, which plays a certain waterproof role. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the electric wrench battery pack.

[0019] Figure 2 yes Figure 1 A magnified schematic diagram of center A.

[0020] Figure 3 It is a cross-sectional schematic diagram of an electric wrench battery pack.

[0021] Figure 4 It is a schematic diagram of the location of battery components and circuit boards.

[0022] In the figure, 1, outer shell; 1a, positioning seat; 1b, slot; 1c, sound hole; 1d, upper vertical plane; 1e, inclined surface; 1f, lower vertical plane; 1g, positioning groove; 2, battery assembly; 2a, lithium battery; 2b, plastic block; 3, circuit board; 4, positive terminal; 5, negative terminal; 6, voice generator. DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0024] like Figure 1 and Figure 3As shown, the electric wrench battery pack includes a substantially rectangular housing 1, and a battery assembly 2 and a circuit board 3 both horizontally arranged in the housing 1, wherein the circuit board 3 is located on the upper side of the battery assembly 2, and the circuit board 3 is used to control the battery assembly 2. In actual products, the connection method between the circuit board 3 and the battery assembly 2 is existing and will not be described in detail here.

[0025] Specifically,

[0026] The circuit board 3 is provided with a positive terminal 4 and a negative terminal 5 arranged in parallel along the width direction of the housing 1; the upper side of the housing 1 is a positioning seat 1a for connecting the electric wrench, and the top of the positioning seat 1a is provided with two slots 1b, and the upper ends of the positive terminal 4 and the negative terminal 5 are respectively located in the two slots 1b. In the actual product, the slot 1b is long and the length extends along the length direction of the housing 1, and one end of the slot 1b is open to achieve sliding installation of the battery pack.

[0027] like Figures 1 to 4 As shown, a speech sounder 6 is electrically connected to the top surface of the circuit board 3. The speech sounder is an existing product and can be purchased on the market. A plurality of small sound holes 1c are provided on one of the long side walls of the housing 1. The small sound holes 1c are arranged along the width direction of the housing 1. The position of each small sound hole 1c is higher than the circuit board 3 but lower than the positioning seat 1a.

[0028] In actual use, the positive and negative poles of the controller connected to the electric wrench motor are respectively inserted into the positive terminal 4 and the negative terminal 5, so that the circuit board 3 can communicate with the controller, and the motor operation status (such as forward or reverse) is broadcast through the voice speaker 6, so that the operator can clearly know the working status of the electric wrench. This is not only convenient to use, but also makes the use experience of the electric wrench stronger.

[0029] At the same time, the position of each sound hole 1c is set higher than the circuit board 3 but lower than the positioning seat 1a. This not only makes the sound hole 1c completely exposed to the outside, so that the operator can clearly hear the broadcast of the voice sounder 6, but also makes the sound hole 1c staggered with the battery assembly 2, which plays a certain waterproof role.

[0030] To further illustrate, the sound holes 1c are divided into multiple rows arranged in parallel along the height direction of the shell 1, and each row of sound holes 1c includes multiple sound holes 1c distributed along the length direction of the shell 1, so that the sound holes 1c are evenly arranged, the sound is more concentrated and uniform, and the user experience of the electric wrench is better.

[0031] like Figure 1As shown, the outer surface of the long side wall of the housing 1 having the sound outlet hole 1c has a long strip-shaped guide surface, and the guide surface and the housing 1 have the same length extension direction. The guide surface is composed of an upper vertical plane 1d, an inclined surface 1e and a lower vertical plane 1f that are continuously distributed from top to bottom, and the inclined surface 1e is set obliquely downward, and the sound outlet hole 1c is set on the upper vertical plane 1d. The above design can effectively prevent water from gathering at the sound outlet hole 1c, and further enhance the waterproof effect. Preferably, the sound outlet hole 1c is set obliquely downward, so that the inner side of the sound outlet hole 1c is higher than the outer side, which has a better waterproof effect.

[0032] In this embodiment, the battery assembly 2 is an existing product, and the battery assembly 2 includes an insulating bracket and a plurality of horizontally arranged columnar lithium batteries 2a. The lithium batteries 2a and the above-mentioned circuit board 3 are both fixed on the insulating bracket.

[0033] in,

[0034] like Figure 3 and Figure 4 As shown, the connection method of the lithium battery 2a and the insulating bracket is as follows: the insulating bracket is composed of two plastic blocks 2b arranged in parallel along the width direction of the shell 1, each plastic block 2b is provided with a mounting hole along the width direction of the shell 1, and the shape and size of the mounting hole match the lithium battery 2a, the number of mounting holes on each plastic block 2b is the same as that of the lithium battery 2a, and the two ends of the lithium battery 2a are respectively clamped in the corresponding mounting holes; the width sides of the circuit board 3 are respectively pressed against the top surfaces of the two plastic blocks 2b. The above design facilitates the positioning of the circuit board 3 and the lithium battery 2a.

[0035] like Figure 3 As shown, the installation method of the plastic block 2b and the circuit board 3 is as follows: the bottom surface of the plastic block 2b is tightly pressed against the bottom wall of the shell 1; a long strip-shaped positioning groove 1g with a roughly L-shaped cross section is formed on the inner wall of the shell 1, and the positioning groove 1g and the shell 1 have the same length extension direction. There are two positioning grooves 1g and they are distributed along the width direction of the shell 1, and the top surfaces of the two sides of the width of the circuit board 3 are respectively pressed against the inner walls of the two positioning grooves 1g, so that the circuit board 3 and the plastic block 2b are simultaneously clamped and positioned between the inner wall of the positioning groove 1g and the bottom wall of the shell 1, so as to further simplify the structure and facilitate assembly.

[0036] In an actual product, the housing 1 includes an upper cover and a lower cover, the bottom surface of the upper cover and the top surface of the lower cover are tightly attached together, and the upper cover and the lower cover are fixedly connected by a circle of vertically arranged screws.

[0037] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An electric wrench battery pack, comprising a substantially rectangular housing (1), a battery assembly (2) and a circuit board (3) for controlling the battery assembly (2) both of which are horizontally arranged in the housing (1), the battery assembly (2) being located at the lower side of the circuit board (3), the circuit board (3) being provided with a positive terminal (4) and a negative terminal (5) arranged in parallel along the width direction of the housing (1), the upper side of the housing (1) being a positioning seat (1a) for connecting the electric wrench, the top of the positioning seat (1a) being provided with two slots (1b), and the upper ends of the positive terminal (4) and the negative terminal (5) being respectively located in the two slots (1b), characterized in that: A voice generator (6) is electrically connected to the top surface of the circuit board (3); a plurality of small sound holes (1c) are provided on one of the long side walls of the housing (1); the small sound holes (1c) are arranged through the housing (1) in a width direction; and each small sound hole (1c) is located higher than the circuit board (3) but lower than the positioning seat (1a).

2. The electric wrench battery pack according to claim 1, characterized in that: The above-mentioned sound outlet holes (1c) are divided into a plurality of rows arranged in parallel along the height direction of the outer shell (1), and each row of sound outlet holes (1c) includes a plurality of sound outlet holes (1c) distributed along the length direction of the outer shell (1).

3. The electric wrench battery pack according to claim 1 or 2, characterized in that: The outer surface of the long side wall of the housing (1) having the sound outlet hole (1c) is provided with a long strip-shaped flow guide surface, the flow guide surface and the housing (1) have the same length extension direction, the flow guide surface is composed of an upper vertical plane (1d), an inclined surface (1e) and a lower vertical plane (1f) that are continuously distributed from top to bottom, and the inclined surface (1e) is arranged obliquely downward, and the sound outlet hole (1c) is arranged on the upper vertical plane (1d).

4. The electric wrench battery pack according to claim 3, characterized in that: The sound outlet hole (1c) is arranged obliquely downward.

5. The electric wrench battery pack according to claim 1, characterized in that: The battery assembly (2) comprises an insulating support and a plurality of horizontally arranged columnar lithium batteries (2a), wherein the lithium batteries (2a) and the above-mentioned circuit board (3) are both fixed on the insulating support.

6. The electric wrench battery pack according to claim 5, characterized in that: The insulating bracket is composed of two plastic blocks (2b) arranged in parallel along the width direction of the outer shell (1); each plastic block (2b) is provided with a mounting hole penetrating along the width direction of the outer shell (1); the shape and size of the mounting hole match the lithium battery (2a); the number of mounting holes on each plastic block (2b) is the same as that of the lithium battery (2a), and both ends of the lithium battery (2a) are respectively clamped in the corresponding mounting holes; the width sides of the circuit board (3) are respectively pressed against the top surfaces of the two plastic blocks (2b).

7. The electric wrench battery pack according to claim 6, characterized in that: The bottom surface of the plastic block (2b) is tightly pressed against the bottom wall of the outer shell (1); a positioning groove (1g) having a long strip shape and a substantially L-shaped cross section is formed on the inner wall of the outer shell (1); the positioning groove (1g) and the outer shell (1) extend in the same direction in length; there are two positioning grooves (1g) distributed along the width direction of the outer shell (1); and the top surfaces of the circuit board (3) on both sides of the width are respectively pressed against the inner walls of the two positioning grooves (1g).

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