Backpack type dust collector and electricity-borrowing plug locking assembly for backpack type dust collector

Abstract

The utility model discloses an electricity borrowing plug locking assembly of a backpack dust collector. The connecting seat is integrally and fixedly arranged on a dust collector barrel body and is provided with an electric connector and an electricity borrowing connector; the electricity borrowing plug can be connected with the electricity borrowing connector in a plugging manner and is provided with a power transmission line; the plugging root part of the electricity borrowing plug is provided with a retaining convex shoulder; the buckle can be arranged in the connecting seat in a sliding manner along the direction vertical to the electricity borrowing plug; the elastic pushing piece is arranged in the connecting seat and used for driving the buckle to extend out and blocking the retaining convex shoulder so as to prevent the electricity borrowing plug from being pulled off; and the wrench type switch is wrenched to push the buckle to retreat so as to release blocking of the electricity borrowing plug. The buckle retreats and is inserted into the electricity-borrowing plug, and then the buckle extends out, so that the front end of the buckle abuts against the side face of the electricity-borrowing plug to clamp the retaining shoulder, and the electricity-borrowing plug is prevented from loosening or being easily pulled out. When the wrench type switch is wrenched to the other side, the buckle can retreat and leave, and the electricity borrowing plug can be conveniently pulled out. The utility model further discloses a backpack type dust collector.

Description

TECHNICAL FIELD

[0001] The utility model relates to a knapsack type dust collector, especially to a power borrowing plug locking assembly for knapsack type dust collector. BACKGROUND

[0002] The knapsack type dust collector is generally carried by an operator and used in a large area, so its power cord is usually long. During the process, other operating devices such as a sweeper are used, and power supply is needed. If the power supply is connected separately, the power cord will be repeatedly arranged, which increases the cost. Therefore, a power lead-out assembly can be arranged on the connecting seat of the knapsack type dust collector.

[0003] The power lead-out assembly cannot be arranged in a fixed and attached form, and is generally in a plug-in connection structure, that is, a power borrowing connector is arranged on the connecting seat, and a lead wire is connected with a circuit board, a power supply line is connected with the power borrowing connector, and a power borrowing path is formed in a plug-in and detachable manner. If the external power cord fails, it can be directly replaced, which is convenient for maintenance. However, the plug-in structure is easy to be loosened under the action of a certain pulling force, and is also easy to be forcibly pulled out. In addition, the fulcrum of the force action is at the root of the electric plug during shaking, and the electric plug is more likely to be loosened. Therefore, a buckle can be arranged to block the loosening of the electric plug, and a press-type buckle assembly can be pressed to release the block and facilitate the plug-in and plug-out of the electric plug. However, the electric plug can be pulled out only when the switch button is pressed and held. However, it is difficult to judge whether the pressing depth is in place, the pressing force direction is perpendicular to the locking direction of the buckle, and the pressure required for release is larger, usually more than twice the elastic pushing force of the rear side of the buckle. The power borrowing plug-in assembly is usually arranged on one side, which is not convenient for two-handed operation, and one-handed operation encounters the contradictory problem that the switch button needs to be continuously pressed and the electric plug needs to be pulled out at the same time, which cannot be solved. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model solves the technical problem of providing a power borrowing plug locking assembly for a knapsack type dust collector, which can be conveniently pulled out by one hand. The utility model also provides a knapsack type dust collector comprising the power lead-out assembly.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a power plug locking assembly for a backpack vacuum cleaner, comprising a connector fixedly installed in the vacuum cleaner body and having an electrical connector and a power plug connector, a power plug with a power supply line and a retaining shoulder at the plug-in root that can be plugged and detached with the power plug connector, a buckle that can be slidably installed in the connector in a direction perpendicular to the power plug connector, a spring pusher provided in the connector to drive the buckle out and lock the retaining shoulder to prevent the power plug from being pulled out, and a wrench-type switch that can be pulled to push the buckle back and release the power plug from being locked.

[0006] As an improvement to the technical solution of the charging plug locking assembly for a backpack vacuum cleaner, the wrench-type switch includes a wrench portion exposed in the connecting seat for easy turning, a switch body integrally connected to the wrench portion and located in the connecting seat, a gear portion attached to the switch body and located in the connecting seat, and a pivot provided in the switch body and pivotally connected to the connecting seat. The bottom surface of the buckle is provided with a rack that can mesh with the gear portion for transmission.

[0007] As an improvement to the technical solution of the present invention for the locking assembly of the power plug of a backpack vacuum cleaner, the rack is located on the inner side of the wheel teeth.

[0008] As an improvement to the technical solution of the present invention for the locking assembly of the power plug of a backpack vacuum cleaner, the rack is located on the outer side of the wheel teeth.

[0009] As an improvement to the technical solution of the power plug locking assembly for a backpack vacuum cleaner, the wrench-type switch includes a wrench portion exposed in the connecting seat for easy turning, a switch body integrally connected to the wrench portion and located in the connecting seat, a gear portion attached to the switch body and located in the connecting seat, and a pivot provided in the switch body and pivotally connected to the buckle. The connecting seat is provided with a rack that can mesh with the gear portion for transmission.

[0010] As an improvement to the technical solution of the power plug locking assembly for a backpack vacuum cleaner, the longitudinal section of the wrench-type switch is B-shaped.

[0011] As an improvement to the technical solution of the charging plug locking assembly for a backpack vacuum cleaner, the buckle is provided on the upper side of the charging plug, and the buckle is provided with a latch for adapting to the blocking and anti-reverse shoulder.

[0012] As an improvement to the technical solution of the charging plug locking assembly for a backpack vacuum cleaner, the latch is a U-shape that partially surrounds the root of the charging plug; the front end of the latch is set as an inclined guide surface for the charging plug to press against it and cause the latch to retract.

[0013] In addition, the technical scheme of the whole device adopted by the utility model is: a knapsack type dust collector, comprising a dust collector barrel body, the dust collector barrel body is equipped with the electricity borrowing plug locking assembly for the knapsack type dust collector in any one of the foregoing technical schemes.

[0014] The utility model has the advantages that: the buckle is provided with the retreat function in the connecting seat, the electricity borrowing plug is inserted under the condition that the buckle retreats, then the front end of the buckle is abutted at the side of the electricity borrowing plug under the action of the elastic pushing piece to make the buckle catch the stop shoulder, and then the electricity borrowing plug is prevented from being loosened or pulled out easily, so that the connection firmness and the power stability of the electricity borrowing transmission line are ensured. The buckle retreats when the wrench type switch is pulled to the other side, so that the front end of the buckle is away from the electricity borrowing plug by a certain distance, and the electricity borrowing plug can be pulled out easily and conveniently at this time. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic view of the barrel body and the power supply leading-out assembly of the knapsack type dust collector.

[0016] Figure 2 It is a three-dimensional structure schematic view of the barrel body and the power supply leading-out assembly of the knapsack type dust collector. Figure 1

[0017] Figure 3 It is a three-dimensional structure schematic view of the electricity borrowing plug locking assembly for the knapsack type dust collector.

[0018] Figure 4 It is a three-dimensional structure schematic view of the electricity borrowing plug locking assembly for the knapsack type dust collector.

[0019] Figure 5 It is a three-dimensional structure schematic view of the connecting seat body Figure 1 .

[0020] Figure 6 It is a three-dimensional structure schematic view of the connecting seat body Figure 2 .

[0021] Figure 7 It is a three-dimensional structure schematic view of the wrench type switch Figure 1 .

[0022] Figure 8 It is a three-dimensional structure schematic view of the wrench type switch Figure 2 .

[0023] Figure 9 It is a three-dimensional structure schematic view of the buckle Figure 1 .

[0024] Figure 10 It is a three-dimensional structure schematic view of the buckle​Figure 2 .

[0025] Figure 11 The schematic view of the three-dimensional structure of the baffle. DETAILED DESCRIPTION

[0026] The specific embodiment of the utility model will be further explained below in combination with the drawings.

[0027] As Figure 1 , Figure 2 , Figure 3 , Figure 4 The utility model discloses a borrow electricity plug locking assembly for knapsack type dust collector, it includes the connecting seat 12 of integral fixed installation in dust collector barrel body 11 and being equipped with electricity connector and borrow electricity connector, the borrow electricity plug 15 of having power transmission line and being equipped with the stop shoulder 16 of plug-in root with borrow electricity connector plug -in connection can be installed in the connecting seat 12 along the direction perpendicular to borrow electricity plug 15 and slide, the buckle 21 of being arranged in the connecting seat 12 and driving the buckle 21 extends and blocks the stop shoulder 16 and prevents borrow electricity plug 15 to pull off, the spanner type switch 31 of being pulled and pushing the buckle 21 to retreat and releasing the block of borrow electricity plug 15.In the connecting seat 12, the buckle 21 that can retreat is arranged, and the borrow electricity plug 15 is inserted under the condition that the buckle 21 retreats, then the buckle 21 extends under the action of the elastic pushing piece and makes the front end of the buckle 21 abut at the side of the borrow electricity plug 15 to block the stop shoulder 16, further prevents the borrow electricity plug 15 from loosening or being easily pulled out, guarantees the connection firmness and power stability of borrow electricity power transmission line. The spanner type switch 31 is swung and moved, then the buckle 21 can be pulled back and the front end of the buckle 21 is away from the borrow electricity plug 15 by a certain distance, at this time, the borrow electricity plug 15 can be pulled out easily. Because the swing angle and amplitude are more obvious, and one finger can block the spanner type switch and prevent it from resetting, avoid the buckle 21 from extending forward and blocking the borrow electricity plug 15 again during the process of pulling out the borrow electricity plug 15, and unlike the press type switch, the depth of pressing cannot be judged whether it is enough to prevent the buckle 21 from resetting and prevent the borrow electricity plug 15 from being pulled out. The press type switch of the 45° inclined plane side push transmission structure needs a press force that is twice the restoring force of the buckle 21, so that both hands are needed to safely swing out the borrow electricity plug 15, and one hand is needed to press the press type switch. The spanner part of the spanner type switch 31 is set farther from the fulcrum center axis according to the lever principle, and the resistance of limiting resetting is less than the restoring force of the spring to the buckle 21, so that one finger can block the tail of the spanner type switch 31 to prevent it from resetting, and then the borrow electricity plug 15 can be pulled out easily, realizing single-handed easy operation. The electricity connector is connected with the electricity plug 13 to access the commercial power, so as to access the power supply of the dust collector.

[0028] Among them, as Figures 3 to 8As shown, the spanner switch 31 comprises a spanner part 35 exposed to the connecting seat for easy actuation, a switch body 32 integrally connected with the spanner part 35 and located in the connecting seat 12, a gear part 33 attached to the switch body 32 and located in the connecting seat 12, a pivot 36 provided on the switch body 32 and pivotally connected with the connecting seat 12, and the bottom surface of the buckle 21 is provided with a rack 23 which can engage and drive the gear part 33. The connecting seat 12 is provided with a circular arc fork 19 which is adapted to the pivot 36, and the opening of the circular arc fork 19 is less than 180°, which facilitates the pivot 36 to be loaded from the opening and not to fall out. The loaded spanner switch 31 can rotate along the pivot 36, and the spanner part 35 is driven to rotate under the action of external force, so that the gear part 33 is turned to drive the rack 23 to move linearly along its length direction, that is, the buckle 21 is pulled back. Release the spanner part 35, and under the action of the spring restoring force at the rear side of the buckle 21, the buckle 21 has a tendency to return to the original position.

[0029] Specifically, as shown in Figure 3 、 Figure 9 、 Figure 10 , the rack 23 is provided on the tooth-shaped hole 22 of the buckle 21, and the teeth are integrally fixed with the plate body on both sides, thereby reducing the thickness of the buckle and reducing the required space for accommodation and movement. The body of the buckle 21 is in the shape of a sliding plate, and the buckle 21 is provided with a sunken groove 28 for accommodating the switch body 32, thereby reducing the thickness of the buckle. As shown in Figure 5 、 Figure 6 , the connecting seat 12 is provided with an extension hole 18 for the spanner switch 31 to partially pass through. The connecting seat 12 is also provided with a limiting groove 59 for accommodating part of the elastic pushing member.

[0030] Among them, as shown in Figure 3 、 Figure 4 , the rack 23 is located on the inner side of the gear part 33, that is, the gear part 33 and the spanner part 35 are respectively located on both sides of the pivot 36, and the spanner switch 31 can be made more compact and flexible.

[0031] Alternatively, the rack is located on the outer side of the gear part, that is, the gear part and the spanner part are located on the same side of the pivot, and the pivot and the switch body are located on the inner side, which can reserve more space for the switch body, that is, the distance between the distal end of the spanner part and the pivot can be larger, thereby making it easier to actuate the switch.

[0032] Specifically, the spanner switch 31 comprises a spanner part 35 exposed to the connecting seat 12 for being easily actuated, a switch body 32 integrally connected with the spanner part and located in the connecting seat 12, a gear part 33 attached to the switch body and located in the connecting seat 12, a pivot 36 provided on the switch body and pivotally connected with the buckle 21, and a rack 23 provided in the connecting seat 12 and capable of engaging and driving the gear part 33. The body plate of the buckle 21 has an inner perforation, and two sides close to the perforation are provided with arc-shaped forks adapted to the pivot 36, the opening of the arc-shaped forks is less than 180°, facilitating the pivot to be loaded into the opening and not to fall out. The loaded spanner switch 31 can be rotated along the pivot, and the spanner part 35 is driven to rotate under the action of external force, so that the gear part rolls forward along the rack in engagement, and the pivot 36 drives the buckle 21 to move linearly in the direction of swinging of the spanner part 35, that is, the buckle 21 is pulled back. The spanner part 35 is released, and the buckle 21 has a restoring tendency under the action of the spring restoring force at the rear side of the buckle.

[0033] Further, the longitudinal section of the spanner switch 31 is b-shaped, that is, the spanner part 35 is arranged along the tangent direction of the switch body 32, so that the spanner part 35 is easily actuated to rotate the switch and avoid slipping, and the spanner switch 31 can be more stable when being reset, and the finger can be obliquely upwardly buckled.

[0034] As shown in Figures 1 to 4 , the buckle 21 is arranged on the upper side of the power borrowing plug 15, and the front end of the buckle is provided with a card tongue 26 adapted to the blocking and retreating shoulder 16. The power borrowing power transmission line extends obliquely downwardly outside, and if subjected to external force, the fulcrum is usually at the lower side edge of the power borrowing plug 15 and is inwardly topped, and the upper side of the power borrowing plug 15 is laterally outwardly pulled, so that the power borrowing plug 15 is buckled on the upper side to ensure the firmness of plug connection and the stability of power transmission.

[0035] As shown in Figures 9 to 10 , the card tongue 26 is U-shaped and semi-surrounds the root of the power borrowing plug 15, and not only abuts against the side surface of the power borrowing plug 15 from the upper side, but also positions and limits the two sides of the power borrowing plug 15 to prevent the power borrowing plug 15 from being loosened due to unilateral tilting and shaking, and further enhances the firmness of plug connection. The retreating shoulder 16 corresponding to the root of the power borrowing plug 15 surrounds the root of the power borrowing plug 15.

[0036] The front end surface of the clamping tongue 26 is provided as an inclined guide surface for the power borrowing plug 15 to press and retreat the clamping buckle 21, so that the power borrowing plug 15 can be directly inserted, and the process of insertion synchronously pushes away the clamping tongue 26 to make the clamping buckle 21 retreat against the pushing force of the elastic pushing piece, until the retreat stop protrusion 16 passes the clamping tongue 26 at the front end of the clamping buckle 21, the clamping tongue 26 is pressed against the side surface of the power borrowing plug and outside the retreat stop protrusion 16, and the clamping buckle 21 is blocked to retreat.

[0037] More preferably, in combination with Figures 3 to 6 、 Figure 11 As shown in the drawings, the inner side of the connecting seat 12 is provided with a baffle 51, the baffle 51 and the connecting seat 12 form a dark groove 52 for sliding of the clamping buckle 21, the connecting seat 12 is provided with a bright groove 55 at the lower side of the dark groove 52 and used for setting the power borrowing connector and the power borrowing plug 15, and the dark groove 52 and the bright groove 55 are provided with a through hole 56 for the clamping tongue 26 of the clamping buckle 21 to extend out. The dark groove 52 hides the main body of the clamping buckle 21 and the clamping buckle 21 can slide in the dark groove 52, so that the clamping tongue 21 can extend out or retract from the through hole 56, and the power borrowing plug 15 inserted in the bright groove 55 is blocked and unblocked. The baffle 51 is provided with a sliding beam 58, so as to support the clamping buckle 21 and reduce the friction resistance between the clamping buckle 21 and the baffle 51.

[0038] In addition, the utility model discloses a knapsack type dust collector, it includes dust collector barrel 11, this dust collector barrel 11 is equipped with the power borrowing plug locking assembly for knapsack type dust collector in any one of preceding technical schemes, so that its power borrowing power transmission line connection is firm and stable, and the plug-in relation between the power borrowing plug and the power borrowing connector is not pulled off in the operation process because of the external pulling force of the sweeper and other tools.

[0039] The above only discloses the preferred embodiment of the utility model, of course, cannot be limited to the scope of the utility model right, therefore, the equivalent change made according to the utility model patent range still belongs to the range covered by the utility model.

Claims

1. A power borrowing plug lock assembly for a backpack vacuum cleaner, characterized by: The application relates to a power borrowing plug locking assembly for a backpack vacuum cleaner, which comprises a connecting seat fixedly installed on a vacuum cleaner barrel body and provided with an electric connector and a connecting seat connected with the electric connector, a power borrowing plug with a power transmission line and provided with a retreat preventing protrusion at a plug root, a buckle slidably installed in the connecting seat in a direction perpendicular to the power borrowing plug, a spring pushing piece arranged in the connecting seat and used for driving the buckle to extend and block the retreat preventing protrusion to prevent the power borrowing plug from being pulled out, and a wrench type switch used for pulling the buckle to retreat and release the blocking of the power borrowing plug; the wrench type switch comprises a wrench part exposed on the connecting seat and convenient to be pulled, a switch body integrally connected with the wrench part and arranged in the connecting seat, a gear part attached to the switch body and arranged in the connecting seat, and a pivot arranged on the switch body and pivotally connected with the connecting seat; the bottom surface of the buckle is provided with a rack capable of being engaged and driven by the gear part.

2. A power borrowing plug lock assembly for a backpack vacuum cleaner according to claim 1, wherein: The rack is located on the inner side of the gear part.

3. A power borrowing plug lock assembly for a backpack vacuum cleaner as defined in claim 1, wherein: The rack is located on the outer side of the gear part.

4. The power borrowing plug lock assembly for a backpack vacuum cleaner of claim 1, wherein: The buckle is arranged on the upper side of the power borrowing plug, and the buckle is provided with a clamping tongue used for adapting to block the retreat preventing protrusion.

5. A power borrowing plug lock assembly for a backpack vacuum cleaner as defined in claim 4, wherein: The clamping tongue is U-shaped and surrounds the root of the power borrowing plug; and the front end surface of the clamping tongue is provided with an inclined guide surface used for allowing the power borrowing plug to press and retreat the buckle.

6. A backpack vacuum cleaner characterized by: The application further relates to a vacuum cleaner barrel body provided with the power borrowing plug locking assembly for a backpack vacuum cleaner.

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