CN219528718U - Electric self-priming locking mechanism of automobile tail door lock - Google Patents

Abstract

The utility model discloses an electric self-priming locking mechanism of an automobile tail door lock.A cam for pushing a self-priming plate to swing is fixed on one axial surface of a driving gear, the self-priming plate is hinged in an upper shell of the automobile tail door lock through a self-priming plate shaft, a self-priming driving plate for driving a clamping plate to move from a half-locking position meshed with a pawl to a full-locking position meshed with the pawl is fixed on a driving block at the lower end of the self-priming plate, and a spring for resetting the self-priming driving plate and the self-priming plate is arranged in the upper shell; a clamping plate signal switch which enables the motor to start a full-lock operation program when the clamping plate is positioned at the half-lock position and the clamping plate presses the cambered surface to press the first contact is arranged in the base; the upper shell is internally provided with a cam signal switch which enables the motor to start when the clamping plate is positioned at the full locking position and the cam pressing cambered surface is separated from the second contact and stops rotating and stops resetting when the cam pressing cambered surface presses the second contact. The electric self-priming locking mechanism has the advantages of relatively simple and compact structure, relatively few transition parts and relatively low cost.

Description

Electric self-priming locking mechanism of automobile tail door lock

Technical Field

The utility model relates to the technical field of automobile locks, in particular to an electric self-priming locking mechanism of an automobile tail door lock.

Background

When the automobile tail door is closed, the automobile tail door is normally closed by being pressed down by manpower, but because the force is different, the automobile tail door lock is not closed at the full-lock position but is in the half-lock state in many times, and potential safety hazards exist when the automobile is driven.

In recent years, an electric self-priming tail door lock of an automobile gradually appears, when the tail door is in a half-locking state, an electric control part of the automobile detects and starts an electric self-priming locking mechanism to operate the tail door lock of the automobile from the half-locking state to the full-locking state, and safety accidents are basically prevented from happening.

The electric self-priming locking mechanism of the automobile tail door lock in the prior art has various types and structures and has various advantages and disadvantages. If the structure is relatively complex, parts are relatively more, and the reliability of the operation process is not ideal; some of the layouts are relatively loose, relatively bulky, and both of the above costs are relatively high; some still have relatively loud noise.

Disclosure of Invention

The utility model aims to solve the technical problem of providing an electric self-priming locking mechanism of an automobile tail door lock, which has the advantages of relatively simple and compact structure, relatively few parts and relatively low cost.

The technical scheme is that the electric self-priming locking mechanism of the automobile tail door lock comprises a clamping plate hinged on a base through a clamping plate shaft, clamping plate reset springs arranged on the base and the clamping plate, a pawl hinged on the base through a pawl shaft, a pawl reset spring arranged on the base and the pawl, a worm wheel meshed with a worm on a motor shaft of a motor, and a driving gear meshed with an output gear coaxially fixed with the worm wheel; a cam for pushing the self-priming plate to swing is fixed on one axial surface of the driving gear, the self-priming plate is hinged in an upper shell of the automobile tail door lock through a self-priming plate shaft, a self-priming driving plate for driving the clamping plate to move from a half-locking position meshed with the pawl to a full-locking position meshed with the pawl is fixed on a driving block at the lower end of the self-priming plate, and a spring for resetting the self-priming driving plate and the self-priming plate is arranged in the upper shell; a clamping plate signal switch which enables the motor to start a full-lock operation program when the clamping plate is positioned at the half-lock position and the clamping plate presses the cambered surface to press the first contact is arranged in the base; the upper shell is internally provided with a cam signal switch which enables the motor to start when the clamping plate is positioned at the full locking position and the cam pressing cambered surface is separated from the second contact and stops rotating and stops resetting when the cam pressing cambered surface presses the second contact.

After adopting above structure, the electric self-priming locking mechanism of the automobile tail door lock has the following advantages: the self-priming locking mechanism has the advantages of simple structure, simple parts, compact layout, compact size, relatively small size, relatively saving raw material cost and manufacturing cost, and is characterized in that if a clamping plate signal switch is pressed on and separated, and a cam signal switch is separated from the clamping plate signal switch and is pressed off, namely, when the clamping plate signal switch is in a full-locking position, the driving gear and the cam are automatically started to reset, the parts are compressed to the minimum, the operation process is stable, reliable and safe, and the self-priming locking mechanism is compact in layout.

Further, the contact part of the upper end of the poking block of the self-sucking plate and the cam is a curled edge for increasing the contact area; the included angle between the stirring block and the driving block of the self-sucking plate is preferably 80-100 degrees; the self-priming driving plate is riveted with the self-priming plate through a rivet and respective rivet holes, and is also hinged on the self-priming plate shaft; the clamping plate driving end of the self-priming driving plate and the self-priming driving plate main body are preferably mutually at an included angle of 100-120 degrees; the spring for restoring the self-priming driving plate and the self-priming plate is preferably a tension spring, one end of the tension spring is fixed in the upper shell through a tension spring fixing pin, and the other end of the tension spring is fixed on one side of the self-priming driving plate through a hanging hole. After the structure is adopted, the cam is better in reliability and mechanical property of stirring the self-sucking plate, the stirring angle of the self-sucking driving plate positioned in the upper shell and the base which are communicated is more ideal, and the process of stirring the clamping plate is more stable, more reliable and more flexible; the self-priming driving plate and the self-priming plate are riveted and fixed, and the self-priming plate and the self-priming driving plate are driven simultaneously by a tension spring, so that the structure is more compact, the volume is smaller, and the cost is saved.

Further, the base is internally provided with an 8-shaped buffer block shared by the pawl and the clamping plate. After the structure is adopted, one buffer block is dual-purpose, and is used as a buffer block of a pawl and a buffer block of a clamping plate, so that the structure is more compact, the volume is smaller, and the cost is saved.

Further, the upper end of the U-shaped locking groove of the base is provided with an irregular polygonal buffer block which is used for being contacted with the lock rod to buffer and reduce noise. After the structure is adopted, the connection firmness between the irregular polygonal buffer block and the base is better, so that the buffer effect and the noise reduction effect of the impact of the irregular polygonal buffer block are more obvious when the lock rod is locked.

Drawings

Fig. 1 is a schematic view of the electric self-priming locking mechanism of the present utility model in connection with a base and other related components.

Fig. 2 is a second schematic structural view of the electric self-priming locking mechanism of the present utility model when connected to a base and other related components.

Fig. 3 is a schematic diagram of the electric self-priming locking mechanism according to the first embodiment of the present utility model in a half-lock position to start a full-lock procedure.

Fig. 4 is a second schematic structural view (with the irregular polygonal buffer block omitted) of the electric self-priming locking mechanism of the present utility model in the half-lock position to start the full-lock procedure.

Fig. 5 is a schematic diagram of the electric self-priming locking mechanism of the present utility model in a fully locked position with the cam reset.

Fig. 6 is a second schematic structural view of the electric self-priming locking mechanism of the present utility model in the fully locked position (with the irregular polygonal buffer block omitted) when the cam is reset.

The figure shows: 1. worm gear, 2, output gear, 3, drive gear, 4, base, 5, support, 6, irregular polygonal buffer block, 7, bottom shell, 8, hollowed, 9, first switch box, 10, clamping plate signal switch, 11, worm wheel shaft, 12, motor, 13, motor shaft, 14, worm, 15, clamping plate return spring, 16, rectangular buffer block, 17, clamping plate, 18, clamping plate shaft, 19, pawl shaft, 20, pawl, 21, pawl return spring, 22, 8-shaped buffer block, 23, self-priming plate, 24, tension spring, 25, tension spring fixing pin, 26, self-priming drive plate, 27, rivet, 28, first contact, 29, drive block, 30, second switch box, 31, second contact, 32, cam pressing arc surface, 33, gear shaft, 34, cam, 35, cam signal switch, 36, clamping plate pressing arc surface, 37, curled edge, 38, poking block, 39, hanging hole, 40, self-priming drive plate body, 41, clamping plate, 42, self-priming plate shaft, 43, U-shaped locking groove.

Detailed Description

The following describes the embodiments of the present utility model further with reference to the drawings. It should be noted that the description of these embodiments is for aiding in understanding the present utility model, but is not to be construed as limiting the utility model. In addition, the technical features described in the following embodiments of the present utility model may be combined with each other as long as they do not collide with each other.

As shown in fig. 1, 2, 3, 4, 5, and 6.

The tail gate may include an upper shell and a base 4. The upper shell may include a cover and an upper portion of the back plate. The base 4 can include the lower part of drain pan 7 and backplate and be located the support 5 of drain pan 7 and backplate in the lower part, can have a plurality of fretwork 8 on the support 5, and the activity of the spare part of being convenient for is like the flexible etc. of contact, and U font locked groove sets up in the middle of the bottom of support 5, and support 5 plays the effect of installation spare part and reinforcement. The upper portion of the back plate and the lower portion of the back plate are angled with respect to each other by about 100 ° -130 °. The upper shell is communicated with the base 4 and is used for connecting and driving the parts in the upper shell and the parts in the base 4 through a communicated channel. The base is internally provided with a pawl signal switch which enables the motor to start a drive gear and a lug resetting program when the pawl is positioned at the full-open position and the pawl pressing cambered surface preferably presses the contact by a spring steel arc pressing piece.

The utility model relates to an electric self-priming locking mechanism of an automobile tail door lock, which comprises: a clamping plate 17 hinged on the base 4 through a clamping plate shaft 18, and a clamping plate reset spring 15 arranged on the base 4 and the clamping plate 17; a pawl 20 hinged to the base 4 via a pawl shaft 19, and a pawl return spring 21 provided on the base 4 and the pawl 20. A worm wheel 1 engaged with a worm 14 on a motor shaft 13 of a motor 12, a drive gear 3 engaged with an output gear 2 coaxially fixed with the worm wheel 1. It is to be understood that the worm wheel 1 and the output gear 2 may be coaxially fixed by screw fixation or adhesive fixation, or may be integrally formed, such as injection molding, as a whole. Of the worm wheel 1 and the output gear 2 which are coaxially fixed, the worm wheel 1 is large and the output gear 2 is small. The catch plate 17 is also known as a ratchet. Pawl 20 is also referred to as a dog. The motor 12 can be fixed in the upper housing by clamping or screwing, the worm wheel 1 and the output gear 2 are in rotary fit on the upper part of the back plate through the worm wheel shaft 11, and the driving gear 3 is in rotary fit on the upper part of the back plate through the gear shaft 33.

An axial surface of the drive gear 3 is fixed as one-shot injection molding integrally formed with a cam 34 for pushing the self-sucking plate 23 to swing. The self-sucking plate 23 is hinged in the upper shell of the automobile tail door lock through a self-sucking plate shaft 42, and a self-sucking driving plate 26 for driving the clamping plate 17 to move from a half-locking position or half-locking state of being meshed with the pawl 20 as shown in fig. 4 to a full-locking position or full-locking state of being meshed with the pawl 20 as shown in fig. 6 is fixed on a driving block 29 at the lower end of the self-sucking plate 23. The upper shell is internally provided with springs for resetting the self-priming drive plate 26 and the self-priming plate 23. The base 4 is provided with a clamp signal switch 10 which enables the motor 12 to start a full-lock operation program when the clamp 17 is positioned at a half-lock position or a half-lock state and the clamp pressing cambered surface 36 presses the first contact 28 of the clamp signal switch 10. The upper case has therein a cam signal switch 35 for turning on the motor 12 when the card 17 is in the full lock position or state and the cam pressing arc surface 32 of the cam 34 is disengaged from the second contact 31, and stopping the motor 12 when the cam pressing arc surface 32 of the cam 34 presses the second contact 31 of the cam signal switch 35, thereby stopping the reset. The pressing arc surface may also be referred to as a pressing arc surface.

The card signal switch 10, the cam signal switch 35 and the pawl signal switch can be commercially available microswitches. The clamping plate signal switch 10 can be installed on the support 5 in the base 4 through the first switch box 9, such as clamping connection or screw connection. The cam signal switch 35 may be mounted on the upper portion of the back plate via the second switch box 30, such as via a screw. It will be appreciated that the electrical components of the motor 12, the card signal switch 10, and the cam signal switch 35 are all electrically connected to an electrical control portion of the vehicle, such as the BCM of the vehicle.

The contact part between the upper end of the poking block 38 of the self-sucking plate 23 and the cam 34 is preferably a curled edge 37 which increases the contact area. The angle between the toggle block 38 of the self-priming plate 23 and the drive block 29 is preferably 80 ° -100 °. The self-priming drive plate 26 is preferably riveted via a rivet 27 and respective rivet holes, the self-priming drive plate 26 is also hinged to the self-priming plate shaft 42, for example, the self-priming drive plate body 40 is riveted to the self-priming plate 23 via a rivet 27, the self-priming drive plate body 40 is also hinged to the self-priming plate shaft 42, and the chuck drive end 41 or chuck drive plate of the self-priming drive plate 26 and the self-priming drive plate body 40 are preferably at an angle of 100 ° to 120 °. The spring for resetting the self-priming driving plate 26 and the self-priming plate 23 is preferably a tension spring 24, one end of the tension spring 24 is fixed in the upper housing through a tension spring fixing pin 25, for example, the tension spring fixing pin 25 is screwed on the upper part of the back plate, and the other end of the tension spring 24 is fixed on one side of the self-priming driving plate 26 through a hanging hole 39.

The clamping plate 17 is preferably provided with a clamping plate plastic-coated sleeve. The pawl 20 is preferably provided with a pawl plastic wrap. The metal body of the card 17 and/or the metal body of the pawl 20 may be exposed at the respective stress points, although a plastic wrap may be used to entirely cover the card 17 and pawl 20. Noise generated by mutual collision of the metal body of the pawl 20 and the metal body of the clamping plate 17 during working is avoided, and the service lives of the pawl and the clamping plate are further prolonged.

The base 4 is internally provided with an 8-shaped buffer block 22 shared by the pawl 20 and the clamping plate 17.

The upper end of the U-shaped locking groove 43 of the base 4 is provided with an irregular polygonal buffer block 6 which is used for contacting with the lock rod to buffer and reduce noise. The U-shaped locking groove 43 is also called a U-shaped locking groove 43 for accommodating the lock lever.

A rectangular buffer block 16 can be arranged on the base 4 at one side far away from the ratchet 20 so as to buffer and reduce noise on one side of the clamping plate 17 far away from the pawl 20, so that the buffering and noise reducing effects of the electric self-priming locking mechanism are more obvious.

The 8-shaped buffer block 22, the irregular polygonal buffer block 6 and the rectangular buffer block 16 described above can be made of rubber.

As shown in fig. 3 (see fig. 4), when the automobile tail door lock is pressed to the half-lock state by manpower, at this time, the second contact 31 of the cam signal switch 35 is in the power-off state due to being pressed by the cam pressing cambered surface 32, the first contact 28 of the card signal switch 10 is pressed by the card pressing cambered surface 36 of the card board 17, so that the motor 12 is electrified and started, the driving gear 3 is driven to rotate counterclockwise around the gear shaft 33 by the worm 14, the worm wheel 1 and the output gear 2, the cam pressing cambered surface 32 of the cam 34 pushes the self-sucking plate 23 to rotate counterclockwise around the self-sucking plate shaft 42, the self-sucking driving plate 26 is driven to rotate counterclockwise around the self-sucking plate shaft 42, and the card board driving end 41 of the self-sucking driving plate 26 pushes the card board 17 to rotate clockwise around the card board shaft 18, namely, the card board 17 in fig. 4 rotates counterclockwise, so that the card board 17 is operated to the full-lock state as shown in fig. 5 and 6, and the self-sucking locking function from the half-lock state to the full-lock state is realized. At this time, the catch plate 17 is engaged with each other in the fully-locked position, i.e., the fully-locked state, by the urging force of the catch plate return spring 15 and the pawl 20 by the urging force of the pawl return spring 21.

As shown in fig. 5, at this time, the drive gear 3 and the cam 34 need to be restored to the initial positions, that is, the initial positions of the drive gear 3 and the cam 34 shown in fig. 3: the card signal switch 10 is powered off because the card pressing cambered surface 36 of the card 17 is separated from the pressing of the first contact 28 of the card signal switch 10, meanwhile, the second contact 31 of the cam signal switch 35 is automatically conducted to power on and further start the motor 12 to rotate reversely because of separation from the cam pressing cambered surface 32 of the cam 34, the worm 14, the worm wheel 1 and the output gear 2 drive the driving gear 3 to rotate clockwise around the gear shaft 33, at the moment, the tension spring 24 pulls the self-priming driving plate 26 and the self-priming plate 23 to rotate clockwise around the self-priming plate shaft 42, and the self-priming plate 23 is pressed on the cam pressing cambered surface 32 of the cam 34 until the free end of the cam pressing cambered surface 32 of the cam 34 presses the second contact 31 of the cam signal switch 35 to power off the cam signal switch 35, and the motor 12 stops rotating to finish the reset of the driving gear 3 and the cam 34.

The drawings are schematic only, where the drawings do not conform to the written description or where the drawings do not conform to each other, the written description will take precedence.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (3)

1. The electric self-priming locking mechanism for automobile tail door lock includes one clamping board hinged to the base via one clamping board shaft, one clamping board reset spring set on the base and the clamping board, one pawl hinged to the base via one pawl shaft, one pawl reset spring set on the base and the pawl, one worm wheel meshed with the worm on the motor shaft, and one driving gear meshed with the output gear fixed coaxially with the worm wheel; the method is characterized in that: a cam for pushing the self-priming plate to swing is fixed on one axial surface of the driving gear, the self-priming plate is hinged in an upper shell of the automobile tail door lock through a self-priming plate shaft, a self-priming driving plate for driving the clamping plate to move from a half-locking position meshed with the pawl to a full-locking position meshed with the pawl is fixed on a driving block at the lower end of the self-priming plate, and a spring for resetting the self-priming driving plate and the self-priming plate is arranged in the upper shell; a clamping plate signal switch which enables the motor to start a full-lock operation program when the clamping plate is positioned at the half-lock position and the clamping plate presses the cambered surface to press the first contact is arranged in the base; the upper shell is internally provided with a cam signal switch which enables the motor to start when the clamping plate is positioned at the full locking position and the cam pressing cambered surface is separated from the second contact and stops rotating and stops resetting when the cam pressing cambered surface presses the second contact.

2. The electric self-priming locking mechanism of an automobile tail gate lock of claim 1, wherein: the contact part of the upper end of the poking block of the self-sucking plate and the cam is a curled edge for increasing the contact area; the included angle between the stirring block and the driving block of the self-sucking plate is 80-100 degrees; the self-priming driving plate is riveted with respective riveting holes through a rivet, and the self-priming driving plate is also hinged on the self-priming plate shaft; the clamping plate driving end of the self-priming driving plate and the self-priming driving plate main body form an included angle of 100-120 degrees; the spring for self-priming drive plate and self-priming plate reset is the extension spring, and the one end of extension spring is fixed in the upper casing through the extension spring fixed pin, and the other end of extension spring is fixed in one side of self-priming drive plate through the hanging hole.

3. The electric self-priming locking mechanism of an automobile tail gate lock of claim 1, wherein: the base is internally provided with a 8-shaped buffer block shared by the pawl and the clamping plate.