CN116276828A - electrical tools - Google Patents

Abstract

The invention discloses an electric tool, comprising: the shell is provided with convex ribs and locking grooves; the battery assembly comprises a shell and a locking piece which is slidably arranged on the shell, and the shell is provided with a sliding groove and a clamping groove; the first elastic piece is arranged on the shell; the elastic positioning piece is rotatably arranged on the shell and comprises a clamping part and a supporting part, and the first elastic piece is clamped between the supporting part and the shell; under the locking state, the convex rib is connected in the sliding groove so as to limit the movement of the battery assembly relative to the machine shell in the Y direction and the Z direction, the locking piece is inserted into the locking groove, and the locking piece is abutted to the abutting part. The electric tool can reduce abrasion of the battery assembly and the shell and poor contact between the battery assembly and the electric connector in the shell caused by vibration, and avoid falling of the battery assembly.

Description

electrical tools

technical field

The invention relates to the technical field of electric tools, in particular to an electric tool.

Background technique

Power tools usually include a detachable battery pack and a casing. The power tools currently on the market mainly rely on the positioning and fixing of the ribs of the battery pack, the lock tongue and the ribs of the casing. The positioning and fixing structure of the battery pack does not have a buffer structure. On electric tools with large vibrations (such as electric hammers and electric picks), the battery pack lock tongue and casing are easy to wear, and even the battery pack falls off; Poor, the slots/tabs are prone to wear and tear.

The information disclosed in this Background section is only for enhancing the understanding of the general background of the present invention and should not be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled in the art.

Contents of the invention

The purpose of the present invention is to provide an electric tool, which can reduce the wear of the battery assembly and the casing.

In order to achieve the above purpose, an embodiment of the present invention provides an electric tool, including:

The casing has ribs and locking grooves;

The battery assembly includes a casing and a locking piece slidably installed on the casing, and the casing has a sliding groove and a card slot;

a first elastic member installed on the casing;

The elastic positioning member is rotatably installed on the casing, the elastic positioning member includes a clamping portion and a resisting portion, and the first elastic member is clamped between the resisting portion and the casing;

In the locked state, the ribs are connected in the chute to limit the movement of the battery assembly relative to the housing in the Y direction and the Z direction, and the locking piece is inserted into the locking groove to Limiting the movement of the battery assembly relative to the casing in the X direction; the locking member abuts against the abutting portion to make the elastic positioning member rotate, and the first elastic member is positioned at the abutting portion Elastic deformation occurs under the action, so that the clamping part abuts against the clamping slot to generate a force to limit the movement of the battery assembly relative to the casing along the X direction and the Y direction.

In one or more embodiments of the present invention, the clamping portion is formed by bending and extending from one end of the resisting portion.

In one or more embodiments of the present invention, one end of the clamping portion is bent and extended to form an abutting portion, and the abutting portion has an abutting surface;

In the locked state, the clamping portion is in contact with the bottom of the card slot, and the abutment surface is in contact with a side wall of the card slot.

In one or more embodiments of the present invention, the elastic positioning member further includes a connecting portion connected to the clamping portion or the clamping portion, and the connecting portion is rotatably connected to the housing.

In one or more embodiments of the present invention, a rotating pin is installed on the casing, the connecting portion has a positioning hole, and the rotating pin is rotatably connected to the positioning hole so that the connecting portion is rotatably connected on the casing.

In one or more embodiments of the present invention, the casing has a limiting surface;

In the unlocked state, the first elastic member makes the abutting portion abut against the limiting surface, and the locking portion is separated from the locking groove.

In one or more embodiments of the present invention, the locking member includes a button portion for pressing and a lock tongue portion for abutting against the abutting portion.

In one or more embodiments of the present invention, a second elastic member is installed on the housing, and the second elastic member is held between the locking member and the housing,

In the locked state, the locking member abuts against the abutting portion under the action of the second elastic member; the elastic restoring force of the second elastic member is greater than the elastic restoring force of the first elastic member.

In one or more embodiments of the present invention, the housing has a through hole,

In the locked state, the locking member protrudes out of the through hole and abuts against the abutting portion.

In one or more embodiments of the present invention, the casing has a limiting hole for accommodating the first elastic member.

Compared with the prior art, according to the electric tool according to the embodiment of the present invention, when the locking piece is inserted into the locking groove, it abuts against the abutting portion of the elastic positioning piece, and drives the elastic positioning piece to rotate, so that the elastic positioning piece The clamping part of the abutment against the card slot produces a force that restricts the movement of the battery assembly relative to the casing along the X and Y directions, and serves as an auxiliary positioning function for the battery assembly; since the elastic positioning member itself has a certain degree of elasticity , so in the X direction and Y direction, the wear of the battery assembly and the casing caused by vibration and the poor contact between the battery assembly and the electrical connector in the casing are reduced, and the battery assembly is avoided from falling off. In addition, when the elastic positioning member rotates, the abutting part drives the first elastic member to undergo elastic deformation, and the elasticity of the first elastic member is used to reduce the wear and tear of the battery assembly and the casing caused by vibration in the Z direction, as well as the battery assembly and the casing. The poor contact between the electrical connectors in the case prevents the battery components from falling off.

Description of drawings

FIG. 1 is an exploded view of some parts of an electric tool according to an embodiment of the present invention;

2 is a schematic diagram of a battery pack according to an embodiment of the present invention;

3 is a schematic diagram of an elastic positioning member according to an embodiment of the present invention;

4 is a partial cross-sectional view of an electric tool according to an embodiment of the present invention;

Fig. 5 is the enlarged view of place A in Fig. 4;

6 is a partial cross-sectional view of an electric tool according to an embodiment of the present invention;

Fig. 7 is the enlarged view of place B in Fig. 6;

8 is a partial cross-sectional view of an electric tool according to an embodiment of the present invention;

Fig. 9 is an enlarged view at point C in Fig. 8 .

Explanation of main reference signs:

1. Case; 11. Rib; 12. Locking groove; 13. Left case; 14. Right case; 15. Limit hole; 16. Limit surface; 2. Battery assembly; 21. Shell; 211. Groove; 212, card slot; 22, locking member; 221, lock tongue part; 222, button part; 2211, guide surface; 23, second elastic part; 3, first elastic part; 4, elastic positioning part; 41, 42, resisting portion; 43, connecting portion; 431, positioning hole; 44, abutting portion; 441, abutting surface; 5, rotating pin.

Detailed ways

The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

As shown in Figures 1 to 3, the electric tool according to the preferred embodiment of the present invention includes a casing 1, a battery assembly 2, a first elastic member 3 and an elastic positioning member 4; the casing 1 has ribs 11 and locking grooves 12; The battery assembly 2 includes a housing 21 and a locking member 22 slidably mounted on the housing 21. The housing 21 has a sliding groove 211 and a locking groove 212; the first elastic member 3 is installed on the casing 1; the elastic positioning member 4 rotates Installed on the case 1 , the elastic positioning member 4 includes a clamping portion 41 and a resisting portion 42 , and the first elastic member 3 is clamped between the resisting portion 42 and the case 1 .

In the locked state, the ribs 11 are connected in the sliding groove 211 to limit the movement of the battery assembly 2 relative to the casing 1 in the Y direction and the Z direction, and the locking piece 22 is inserted into the locking groove 12 to restrict the movement of the battery assembly 2 relative to the casing 1. The movement of the shell 1 in the X direction; the locking part 22 abuts against the abutment part 42, so that the elastic positioning part 4 rotates, and the first elastic part 3 undergoes elastic deformation under the action of the abutment part 42, so that the clamping part 41 abuts against the In the slot 212 , a force is generated to limit the movement of the battery assembly 2 relative to the casing 1 along the X direction and the Y direction.

It can be understood that the elastic locating member 4 can be a shrapnel with certain elasticity, such as a shrapnel made of metal material. and the casing 1 to play a shock-absorbing effect; the elastic deformation direction of the first elastic member 3 can be in the Z direction, so as to play a shock-absorbing effect on the battery assembly 2 and the casing 1 in the Z direction. Therefore, through the cooperation of the first elastic member 3 and the elastic positioning member 4, the auxiliary positioning and shock absorption of the battery assembly 2 in the X, Y, and Z directions are played during the installation process, and the battery assembly 2 and the casing are reduced. 1, prevent the battery assembly 2 from falling off, and reduce or avoid poor contact and wear between the battery assembly 2 and the electrical connector in the casing 1 caused by the vibration of the battery assembly 2. The X, Y, and Z directions in the present invention may refer to the X, Y, and Z directions in FIG. 2 .

It should be noted that in the prior art, positioning and locking are carried out by the ribs of the battery pack, the lock tongue and the ribs of the casing, which is equivalent to the convex ribs 11 and the locking grooves 12 on the casing 1 in the present invention respectively connecting with the upper ribs of the battery assembly 2. The locking piece 22 and the slide groove 211 on the housing 21 cooperate to realize locking. During the use of electric tools (such as electric hammers, electric picks), severe vibrations will be generated, and the vibrations will be transmitted from the casing 1 to the battery assembly 2, thereby causing wear between the locking member 22 and the locking groove 12, and the battery assembly 2 and the electrical connector in the casing 1, poor contact, wear and other phenomena. Therefore, the present invention reduces the vibration transmitted from the case 1 to the battery assembly 2 by adding the first elastic and elastic positioning member 4 in the case 1 and opening the slot 212 on the case 21, and lowers the locking member 22. Wear between the locking groove 12 and reduce or avoid poor contact and wear between the battery assembly 2 and the electrical connector in the casing 1 . At the same time, it can also play a role in positioning the battery assembly 2 and the casing 1 during the assembly process. That is to say, in the present invention, the first elastic and elastic positioning member 4 is added in the casing 1 and the card slot 212 is opened on the casing 21. Through the cooperation of the above-mentioned structures, the battery assembly 2 and the casing 1 are assembled during the assembly process. Positioning and reducing the vibration transmitted from the casing 1 to the battery assembly 2, reducing the wear between the locking piece 22 and the locking groove 12 and reducing or avoiding poor contact between the battery assembly 2 and the electrical connector in the casing 1, abrasion etc.

As shown in FIG. 1 and FIG. 2 , in a specific embodiment, the casing 1 may be formed by assembling a left casing 13 and a right casing 14 . There are ribs 11 on the left shell 13 and the right shell 14 respectively, and a chute 211 can also be respectively provided on both sides on the housing 21, and the chute 211 corresponds to the ribs 11 one by one, when the left shell 13 and the right shell 14 When the ribs 11 on the top are slidably inserted into the corresponding slide grooves 211 , they can limit the movement of the battery assembly 2 relative to the casing 1 in the Y direction.

Specifically, the left shell 13 and the right shell 14 can be detachably connected by screws and nuts.

It can be understood that part of the locking groove 12 can be considered as being set on the left shell 13 and the other part is set on the right shell 14 . After the left shell 13 and the right shell 14 are assembled, a complete locking groove 12 can be formed.

Specifically, the casing 1 has a limiting hole 15 for accommodating the first elastic member 3, and a part of the first elastic member 3 is installed in the limiting hole 15, so as to limit and guide the deformation of the first elastic member 3 The role of direction.

Further, the first elastic member 3 may be a compression spring.

As shown in FIG. 3 , in a specific embodiment, the holding portion 41 is formed by bending and extending from one end of the abutting portion 42 , so that the distance between the holding portion 41 and the slot 212 is reduced, thereby reducing the The rotation angle of the small elastic positioning member 4 is convenient for the clamping portion 41 to abut against the clamping groove 212 .

Further, one end of the holding part 41 is bent and extended to form an abutting part 44, and the abutting part 44 has an abutting surface 441; 441 is against the side wall of the slot 212 . Such setting can increase the contact area between the elastic positioning member 4 and the slot 212 , thereby enhancing the force limiting the movement of the battery assembly 2 relative to the casing 1 along the X direction.

In a specific embodiment, the elastic positioning member 4 further includes a connecting portion 43 connected to the clamping portion 41 or the clamping portion 41 , and the connecting portion 43 is rotatably connected to the casing 1 . The rotational connection between the elastic positioning member 4 and the casing 1 is realized through the connecting portion 43 .

Further, as shown in Fig. 1 and Fig. 3, a rotating pin 5 is installed on the casing 1, and the connecting part 43 has a positioning hole 431, and the rotating pin 5 is rotatably connected to the positioning hole 431, so that the connecting part 43 is rotatably connected to the casing 1 on. Wherein, the two ends of the rotating pin 5 can be installed on the left shell 13 and the right shell 14 respectively, and the left shell 13 and the right shell 14 can respectively have holes for inserting or installing the rotating pin 5 .

Specifically, the rotating pin 5 can be considered to be an interference fit with the holes on the left shell 13 and the right shell 14, or the outer diameter of the rotating pin 5 is the same as the diameter of the holes on the left shell 13 and the right shell 14, or the outer diameter of the rotating pin 5 The diameter is slightly smaller than the aperture of the hole on the left shell 13 and the right shell 14, that is, the rotating pin 5 can be fixedly installed on the housing 21, or the rotating pin 5 can be rotatably installed on the housing 21.

In the embodiment shown in FIG. 3 , the positioning hole 431 can be formed by bending the connecting portion 43 ; in other embodiments, the positioning hole 431 can also be a hole directly opened on the connecting portion 43 .

In the embodiment shown in FIG. 3 , the elastic positioning member 4 may include two connecting parts 43 , and the two connecting parts 43 are arranged on both sides of the abutment part 42 , so that the connecting parts 43 and the rotating pin 5 can be strengthened. connection strength.

As shown in Figure 5, in a specific embodiment, the casing 1 has a limiting surface 16; in the unlocked state, the first elastic member 3 makes the abutting portion 42 abut against the limiting surface 16, and the locking portion 41 and The card slots 212 are separated. In the unlocked state, the limiting surface 16 can limit the rotational position of the abutting portion 42, so that the abutting portion 42 cooperates with the housing 1 to clamp the first elastic member 3, avoiding 42 The rotation angle is too large, so that the first elastic member 3 cannot be clamped, and the first elastic member 3 falls off from the casing 1 .

As shown in FIGS. 6-9 , in a specific embodiment, the locking member 22 includes a button portion 222 for pressing and a locking tongue portion 221 for abutting against the abutting portion 42 . The button part 222 is connected with the abutting part 42 , and the button part 222 can be pressed to drive the movement of the lock tongue part 221 along the Z direction, that is, to control the position of the lock tongue part 221 along the Z direction.

It can be understood that the locking member 22 is slidably installed on the casing 21, and the locking tongue part 221 has a guiding surface 2211. When the battery pack 2 is plugged into the casing 1, the guiding surface 2211 contacts the casing 1, and the guiding surface 2211 2211 functions to transform the force in the X direction given by the casing 1 into a force in the Z direction, so that the locking tongue portion 221 moves toward the inside of the housing 21 along the Z direction. In an actual installation process, the locking tongue portion 221 can also be moved toward the inside of the housing 21 along the Z direction by pressing the button portion 222 .

As shown in Figures 6 to 9, in a specific embodiment, a second elastic member 23 is installed on the housing 21, and the second elastic member 23 is held between the locking member 22 and the housing 21. In the locked state, the locking The piece 22 abuts against the contact portion 44 under the action of the second elastic piece 23 . The action of the second elastic member 23 drives the locking tongue portion 221 to move along the Z direction toward the outside of the housing 21 along the Y direction.

Specifically, the second elastic member 23 may be a compression spring, and is sheathed and installed on the casing 21 . Part of the locking piece 22 can be inserted into the compression spring, so as to limit the compression spring. In the locked state, the locking member abuts against the abutting portion under the action of the second elastic member; the elastic recovery force of the second elastic member is greater than that of the first elastic member, so that the above effects can be achieved.

Specifically, the housing 21 has a through hole, and in the locked state, the locking member 22 protrudes out of the through hole to abut against the abutting portion 44 . The through hole can function to limit the movement direction of the locking tongue part 221 .

In a specific embodiment, the battery assembly 2 may further include a battery and a controller module installed in the casing 21 .

As shown in FIG. 4 and FIG. 5 , at this time, the casing 1 is considered to be that the left casing 13 and the right casing 14 have also been assembled. At this time, the abutment portion 42 of the elastic positioning member 4 is in contact with the limiting surface 16 of the casing 1 under the action of the first elastic member 3, and the elastic positioning member 4 is rotationally connected with the casing 1 through the rotating pin 5, so as to achieve The first elastic member 3 , the elastic positioning member 4 and the rotating pin 5 are installed on the casing 1 .

As shown in Figures 6 and 7, the battery pack 2 is plugged into the casing 1. At this time, under the action of an external force, the button part 222 moves downward and drives the locking tongue part 221 to move downward, and the locking tongue part 221 Separated from the locking groove 12 and the abutting portion 42 , the locking portion 41 of the elastic positioning member 4 is not inserted into the locking groove 212 at this time, and the battery assembly 2 can slide freely relative to the casing 1 along the X direction.

As shown in Figures 8 and 9, when the force acting on the locking member 22 is removed, the locking member 22 returns to its original position under the action of the second elastic member 23. At this time, the locking tongue portion 221 is inserted into the locking groove 12 and the abutting portion 42 and drive the abutting portion 42 to move upwards along the Z direction, compress the first elastic member 3, and the elastic positioning member 4 rotates. The abutting surface 441 abuts against the sidewall of the slot 212 . At this time, since the elastic positioning member 4 itself has a certain degree of elasticity, under the cooperation of the elastic positioning member 4 and the slot 212, the battery assembly 2 is in a relatively balanced state. During the working process of the electric tool, the casing 1 The vibration transmitted to the battery assembly 2 can be balanced or eliminated by the elastic positioning member 4 , or the vibration transmitted by the casing 1 to the battery assembly 2 can be balanced or eliminated by the cooperation of the elastic positioning member 4 and the first elastic member 3 .

As shown in FIG. 8 and FIG. 9 , since the abutting surface 441 on the abutting portion 44 abuts against the side wall of the slot 212 , during the use of the electric tool, if the battery assembly 2 moves along the X direction relative to the housing 1 Moving to the left, the abutting portion 44 can give the battery assembly 2 a reverse thrust to the right, thereby reducing the contact force and friction between the locking tongue portion 221 and the casing 1 , thereby preventing the battery assembly 2 from being separated from the casing 1 .

In summary, the beneficial effects of the electric tool of the present invention are:

(1) During the installation process, it plays the role of auxiliary positioning and shock absorption for the battery pack in the X, Y, and Z directions.

(2) Reduce the abrasion between the battery pack and the casing, and prevent the battery pack from falling off.

(3) Reduce or avoid poor contact and wear between the battery assembly and the electrical connector in the casing caused by the vibration of the battery assembly.

(4) Reliable structure, simple process, low cost, reliable positioning, easy assembly and maintenance can be applied to platform-based and general-purpose products.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. These descriptions are not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling others skilled in the art to make and use various exemplary embodiments of the invention, as well as various Choose and change. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims (10)

1. A power tool, comprising:

a housing (1) having ribs (11) and locking grooves (12);

the battery assembly (2) comprises a shell (21) and a locking piece (22) which is slidably arranged on the shell (21), wherein the shell (21) is provided with a sliding groove (211) and a clamping groove (212);

a first elastic member (3) mounted on the housing (1);

the elastic positioning piece (4) is rotatably arranged on the machine shell (1), the elastic positioning piece (4) comprises a clamping part (41) and a supporting part (42), and the first elastic piece (3) is clamped between the supporting part (42) and the machine shell (1);

in a locking state, the convex ribs (11) are connected in the sliding grooves (211) so as to limit the movement of the battery assembly (2) relative to the machine shell (1) in the Y direction and the Z direction, and the locking piece (22) is inserted into the locking groove (12) so as to limit the movement of the battery assembly (2) relative to the machine shell (1) in the X direction; the locking piece (22) is abutted with the abutting part (42) to enable the elastic positioning piece (4) to rotate, the first elastic piece (3) is elastically deformed under the action of the abutting part (42), the clamping part (41) is abutted in the clamping groove (212), and force for limiting the movement of the battery assembly (2) relative to the machine shell (1) along the X direction and the Y direction is generated.

2. The power tool according to claim 1, wherein the holding portion (41) is formed by bending and extending from one end of the abutting portion (42).

3. The electric tool according to claim 1, wherein one end of the holding portion (41) is bent and extended to form an abutment portion (44), and the abutment portion (44) has an abutment surface (441);

in the locked state, the clamping part (41) is abutted against the bottom of the clamping groove (212), and the abutting surface (441) is abutted against the side wall of the clamping groove (212).

4. The electric tool according to claim 1, wherein the elastic positioning member (4) further includes a connecting portion (43) connected to the holding portion (41) or the holding portion (41), the connecting portion (43) being rotatably connected to the housing (1).

5. The electric tool according to claim 4, wherein the housing (1) is mounted with a rotation pin (5), the connection portion (43) has a positioning hole (431), and the rotation pin (5) is rotatably connected to the positioning hole (431) so that the connection portion (43) is rotatably connected to the housing (1).

6. The electric tool according to claim 1, characterized in that the housing (1) has a limit surface (16);

in the unlocking state, the first elastic member (3) enables the abutting part (42) to abut against the limiting surface (16), and the clamping part (41) is separated from the clamping groove (212).

7. The electric tool according to claim 1, wherein the lock member (22) includes a button portion (222) for pressing and a tongue portion (221) for abutting against the abutting portion (42).

8. The electric tool according to claim 1, wherein a second elastic member (23) is mounted on the housing (21), the second elastic member (23) being held against between the locking member (22) and the housing (21),

in the locked state, the locking member (22) abuts against the abutment portion (44) under the action of the second elastic member (23); the elastic restoring force of the second elastic piece (23) is larger than that of the first elastic piece (3).

9. The electric tool according to claim 1, wherein the housing (21) has a through hole,

in the locked state, the locking piece (22) protrudes out of the through hole and abuts against the abutting portion (44).

10. A power tool according to claim 1, wherein the housing (1) has a limiting aperture (15) for receiving the first resilient member (3).

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