CN217420799U

CN217420799U - Short tensioning lock

Info

Publication number: CN217420799U
Application number: CN202220122148.2U
Authority: CN
Inventors: 刘杰; 庄伯甫
Original assignee: Suzhou Dirak Co ltd
Current assignee: Suzhou Dirak Co ltd
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2022-09-13
Anticipated expiration: 2032-01-18

Abstract

The utility model provides a short tensioning lock, which comprises a lock shell, a lock core, a lock tongue and a compression spring; an assembly channel is formed in the lock shell, and the lock cylinder penetrates in the assembly channel in the vertical direction; a pin hole is transversely formed in the lower end of the lock cylinder, and a pin shaft is arranged on the pin hole; a hollow rotary drum is arranged at the first end of the lock tongue, extends into the assembly channel from the lower end and forms rotary fit with the assembly channel; the compression spring is sleeved on the lock cylinder, one end of the compression spring acts on the lock shell, and the other end of the compression spring acts on the lock tongue; the inner wall of the rotary drum forms a spiral groove, and the end part of the pin shaft extends into the spiral groove in the assembling state of the lock bolt and the lock cylinder to form that the lock bolt is driven to move in the vertical direction through the matching of the pin shaft and the spiral groove when the lock cylinder rotates. The short tensioning lock occupies less space, and has simple structure and high reliability.

Description

Short tensioning lock

Technical Field

The utility model relates to a tool to lock field especially, relates to a taut lock of short money.

Background

The tensioning lock is a lockset with a tensioning function, can ensure the tight combination between a door body and a door frame through the tensioning function, and is widely applied to the fields of rail transit, aerospace, wind power generation and the like.

Chinese patent CN2549104 discloses a utility model patent named "retractable lock with bolt", which is composed of a lock case, an outer guide sleeve, an inner guide sleeve, a lock core, a rotating shaft, a pin, a bolt, and the like, and is designed for a tight door cabinet, and has dual functions of locking and tensioning.

However, the patent scheme has the following defects: firstly, the lockset occupies more internal space of the door cabinet and is easy to interfere with other parts in the door cabinet; secondly, the lockset comprises an inner guide sleeve and an outer guide sleeve which have double structures, so that the lockset has more parts and complex structure, and the production cost is higher; thirdly, in the assembling process, because the lockset has a complex structure and high assembling precision requirement, the movement smoothness and reliability after the assembly are difficult to ensure.

In view of the above problems, it is desirable to provide a tensioning lock with small space occupation, simple structure and high reliability.

Disclosure of Invention

An object of the utility model is to provide a taut lock of short money.

The utility model adopts the technical proposal that: a short tensioning lock comprises a lock shell, a lock core, a lock tongue and a compression spring;

the lock shell is cylindrical, an assembly channel is formed in the lock shell, and the lock cylinder penetrates in the vertical direction and is positioned in the assembly channel; the upper end of the lock cylinder is convexly provided with a switch action part upwards, and the lower end of the lock cylinder is transversely provided with a pin shaft in a protruding way, and the pin shaft rotates along with the lock cylinder;

the lock bolt comprises a first end which is rotatably assembled with the lock shell and a second end for locking; the first end is provided with a hollow rotary drum which extends into the assembly channel of the lock shell from bottom to top and is in running fit with the assembly channel; the rotary drum and the assembling channel are provided with corresponding limiting structures which limit the relative rotation angle between the rotary drum and the assembling channel;

the compression spring is sleeved on the lock cylinder, one end of the compression spring acts on the lock shell, and the other end of the compression spring acts on the lock tongue;

the inner wall of the rotary drum is provided with a spiral groove, and the end part of the pin shaft extends into the spiral groove in the assembly state of the lock to form that the lock bolt is driven to move in the vertical direction through the matching of the pin shaft and the spiral groove when the lock core rotates; and in the unlocking state, the end part of the pin shaft is positioned at the uppermost end of the spiral groove, and in the locking state, the end part of the pin shaft is positioned at the lowermost end of the spiral groove.

The relevant content in the above technical solution is explained as follows:

1. in the above scheme, the outer circumferential surface of the lock shell is provided with an external thread, and the external thread is matched with a nut; the lock shell is provided with a shaft shoulder at the upper end of the external thread, and the nut and the shaft shoulder clamp a door body together in an installation state.

2. In the above scheme, a washer is arranged between the shaft shoulder and the nut.

3. In the scheme, a sealing groove is arranged below the switch action part of the lock cylinder, and a sealing ring is embedded in the sealing groove; and in the assembled state of the lock cylinder and the lock shell, the sealing ring is positioned at the joint of the lock cylinder and the lock shell and forms a seal.

4. In the above scheme, a positioning disc is formed on the lock cylinder, the sealing groove is formed on the outer peripheral surface of the positioning disc, and a positioning ring is formed on the inner wall of the assembly channel corresponding to the positioning disc; and under the assembly state of the lock cylinder and the lock shell, the lower surface of the positioning plate abuts against the upper surface of the positioning ring.

5. In the above scheme, a clamping groove is arranged below the positioning disc of the lock cylinder, and a clamping ring is embedded in the clamping groove; under the assembly state of lock core with the lock shell, the upper surface butt of rand in the lower surface of holding ring constitutes the positioning disk with the rand is common centre gripping the holding ring.

6. In the above scheme, the limit structure limits the relative rotation angle of the drum and the assembling channel to be 0 to 90 degrees, wherein in the unlocking state, the relative rotation angle is 0 degree, and in the locking state, the second end of the bolt abuts against a door frame, and the relative rotation angle is 90 degrees.

7. In the above scheme, the limiting structure comprises a limiting block formed in the lock and a step formed at the upper end of the rotary drum, and the limiting block and the step are matched with each other to achieve a limiting effect.

8. In the above aspect, the spiral groove rotates in a clockwise direction from an uppermost end to a lowermost end.

9. In the above solution, the spiral groove is provided with a recess at the lowest end thereof, so that in the locked state, the end of the pin is located in the recess.

The beneficial effects of the utility model reside in that: the short tensioning lock can drive the lock tongue to displace in the vertical direction when the lock core rotates through the matching relationship between the pin shaft and the spiral groove, so that the tensioning function is realized; compared with the prior art, the short-style tensioning lock omits an inner guide sleeve, an outer guide sleeve and a lock rod on the basis of keeping the locking and tensioning functions, thereby simplifying the structure, reducing the cost and greatly reducing the volume and the occupied space of the lock; in addition, because the structure complexity is low, the tool to lock moves smoothly when using, and the reliability is high.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention in a locked state;

FIG. 2 is an exploded view of the embodiment of FIG. 1;

FIG. 3 is a front view of the lock housing of the embodiment of FIG. 1;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a schematic view of the lock cylinder of the embodiment shown in FIG. 1;

figure 6 is a cross-sectional view of the latch bolt of the embodiment shown in figure 1;

FIG. 7 is a schematic view of the embodiment of FIG. 1 in a locked state during installation;

FIG. 8 is a schematic rotational view of the embodiment of FIG. 1;

FIG. 9 is a schematic view of the lock cylinder of the embodiment of FIG. 1 in a locked condition;

FIG. 10 is an overall cross-sectional view of the embodiment of FIG. 1 in a locked condition;

fig. 11 is a cross-sectional view of the embodiment of fig. 1 showing the locking bolt in a locked position;

FIG. 12 is a schematic view of the embodiment of FIG. 1 showing the lock cylinder in an unlocked condition;

FIG. 13 is an overall cross-sectional view of the embodiment of FIG. 1 in an unlocked state;

fig. 14 is a cross-sectional view of the embodiment of fig. 1 showing the bolt in an unlocked position.

In the above drawings: 1. a lock case; 2. a lock cylinder; 3. a latch bolt; 4. a gasket; 5. a nut; 6. a seal ring; 7. a collar; 8. a compression spring; 9. a pin shaft; 10. assembling a channel; 11. a limiting structure; 111. a limiting block; 112. a step; 12. a sealing groove; 13. a card slot; 14. a pin hole; 15. a helical groove; 16. a door body; 17. a door frame; 18. a switch action part; 19. a rotating drum; 20. positioning a plate; 21. a positioning ring; 22. a recess; 23. an abutment ring.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

the present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the disclosure may be shown and described, and which, when modified and varied by the techniques taught herein, can be made by those skilled in the art without departing from the spirit and scope of the disclosure.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms "a", "an", "the" and "the", as used herein, also include the plural forms.

The terms "first," "second," and the like, as used herein, do not denote any order or importance, nor do they denote any order or importance, but rather are used to distinguish one element from another element or operation described in such technical terms.

As used herein, "connected" or "positioned" refers to two or more elements or devices being in direct physical contact with each other or in indirect physical contact with each other, and may also refer to two or more elements or devices being in operation or acting on each other.

As used herein, the terms "comprising," "including," "having," and the like are open-ended terms that mean including, but not limited to.

As used herein, the term (terms), unless otherwise indicated, shall generally have the ordinary meaning as commonly understood by one of ordinary skill in the art, in this written description and in the claims. Certain words used to describe the disclosure are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the disclosure.

The terms "front", "rear", "upper", "lower", "left" and "right" used herein are directional terms, and are used only for describing the positional relationship between the structures, and are not intended to limit the scope of protection and the actual direction of the present invention.

As shown in the embodiment of fig. 1 to 14, a short tightening lock is provided, which comprises a lock shell 1, a lock cylinder 2, a bolt 3 and a compression spring 8, wherein the lock cylinder 2, the lock shell 1 and the bolt 3 are assembled in the order from top to bottom.

The lock shell 1 is cylindrical, an assembly channel 10 is formed in the lock shell 1, and the lock cylinder 2 is arranged in the assembly channel 10 in a penetrating mode in the vertical direction; the upper end of the lock core 2 is convexly provided with a switch action part 18 upwards, and the switch action part 18 is matched with a special key of the lock to carry out locking and unlocking operations; the lower end of the lock cylinder 2 is transversely provided with a bolt hole 14, the bolt hole 14 is provided with a pin shaft 9, and the pin shaft 9 is fixed on the bolt hole 14 and rotates along with the lock cylinder 2.

The lock tongue 3 comprises a first end which is rotatably assembled with the lock shell 1 and a second end for locking; the first end is provided with a hollow rotary drum 19, the rotary drum 19 extends into the assembling channel 10 of the lock shell 1 from bottom to top and forms a rotating fit with the assembling channel 10, the second end of the bolt 3 is a movable end, and the second end is matched with a door frame 17 in a locking state, so that the door body 16 is limited to be opened; the drum 19 and the assembly channel 10 are provided with corresponding limiting structures 11, and the limiting structures 11 limit the relative rotation angle between the drum 19 and the assembly channel 10.

As shown in fig. 4, the limiting structure 11 is provided with a limiting block 111 formed in the lock case 1, and the limiting block is matched with a step 112 formed at the upper end of the rotating cylinder 19 to achieve a limiting effect; in this embodiment, the limiting structure 11 limits the relative rotation angle between the drum 19 and the assembly channel 10 to 0 to 90 degrees, and in the unlocked state, the relative rotation angle is 0 degrees, and in the locked state, the second end of the bolt 3 abuts against a door frame 17, and the relative rotation angle is 90 degrees; in practical implementation, other forms can also be selected for use to limit structure 11, as long as can realize its spacing effect just can satisfy the demand of this scheme.

The compression spring 8 is sleeved on the lock core 2, one end of the compression spring 8 acts on the positioning ring 21 of the lock shell 1, and the other end of the compression spring acts on the abutting ring 23 of the bolt 3, so that the lock shell 1 and the bolt 3 are subjected to mutually exclusive elastic force.

As shown in fig. 6, the inner wall of the drum 19 forms a spiral groove 15, and in the assembled state of the lock, the end of the pin 9 extends into the spiral groove 15.

When the lock cylinder 2 rotates, the pin shaft 9 rotates along with the lock cylinder 2, the end part of the pin shaft 9 lifts along the track of the spiral groove 15, and meanwhile, the pin shaft 9 is limited by the bolt hole 14 to keep the horizontal direction, so that the lock cylinder 2 and the bolt 3 are subjected to relative displacement in the vertical direction; the lock core 2 and the lock shell 1 are relatively fixed, so that the lock core 2 is driven to move up and down through the matching of the pin shaft 9 and the spiral groove 15 when rotating; in the unlocked state, as shown in fig. 14, the end of the pin 9 is located at the uppermost end of the spiral groove 15, and in the locked state, as shown in fig. 11, the end of the pin 9 is located at the lowermost end of the spiral groove 15.

In this embodiment, the spiral groove 15 rotates clockwise from the uppermost end to the lowermost path, and the lock with the structure is tightened when the lock core 2 rotates clockwise, and loosened when rotating counterclockwise, so that the use habits of locking by rotating a key clockwise and unlocking by rotating a key counterclockwise are met.

In this embodiment, the spiral groove 15 is provided with a recess 22 at the lowermost end thereof, and the end of the pin shaft 9 is located in the recess 22 in the locked state, so as to maintain the locked state stably.

Now, the working principle of the short tensioning lock is explained as follows:

when locking, firstly, the key acts on the switch action part 18 to enable the lock core 2 to rotate 90 degrees clockwise for the first time, in the process, the compression spring 8 limits the vertical displacement of the lock tongue 3, so that the lock tongue 3 rotates 90 degrees clockwise along with the lock core 2 to enter a locking position, and the lock tongue 3 is limited by the limiting structure 11 at the position and cannot rotate clockwise continuously; at this time, the pin shaft 9 is still positioned at the uppermost end of the spiral groove 15;

then, the key acts on the switch action part 18, so that the lock core 2 rotates clockwise for the second time by 90 degrees, namely the lock core 2 rotates continuously clockwise by 180 degrees, in the process, as the lock tongue 3 cannot rotate clockwise continuously, the end part of the pin shaft 9 can overcome the action of the compression spring 8, descend along the track of the spiral groove 15 and move from the uppermost end to the lowermost end of the spiral groove 15, so that the lock tongue 3 is driven to move upwards, the tensioning effect is realized, and the locking action is finished;

during unlocking, firstly, the key acts on the switch action part 18 to enable the lock cylinder 2 to rotate 90 degrees anticlockwise for the first time, and in the process, along with the release of the compression spring 8, the end part of the pin shaft 9 rises along the track of the spiral groove 15 and moves from the lowest end to the highest end of the spiral groove 15, so that the lock tongue 3 is driven to move downwards to realize the loosening effect;

then, the key acts on the switch action part 18, so that the lock cylinder 2 rotates 90 degrees counterclockwise for the second time, that is, the lock cylinder 2 rotates 180 degrees counterclockwise continuously, in the process, as the end part of the pin shaft 9 is blocked after moving to the uppermost end of the spiral groove 15, the lock cylinder 2 is rotated continuously to drive the lock tongue 3 to rotate 90 degrees counterclockwise, so that the lock tongue 3 rotates from the locking position to the opening position, and the unlocking action is completed.

The short tensioning lock can drive the bolt 3 to displace in the up-down direction when the lock core 2 rotates through the matching relation between the pin shaft 9 and the spiral groove 15, so that the tensioning function is realized; compared with the prior art, the short-style tensioning lock omits an inner guide sleeve, an outer guide sleeve and a lock rod on the basis of keeping the locking and tensioning functions, thereby simplifying the structure, reducing the cost and greatly reducing the volume and the occupied space of the lock; in addition, because the structure complexity is low, the tool to lock moves smoothly when using, and the reliability is high.

In this embodiment, an external thread is formed on the outer peripheral surface of the lock case 1, and the external thread is matched with a nut 5; a shaft shoulder is arranged at the upper end of the external thread of the lock shell 1, and the nut 5 and the shaft shoulder clamp a door body 16 together in an installation state; a gasket 4 is arranged between the shaft shoulder and the nut 5, and the gasket 4 is arranged on one side of the nut 5 relative to the door body 16 so as to ensure the stability of the combination of the nut 5 and the door body 16.

In this embodiment, a sealing groove 12 is arranged below the switch action part 18 of the lock cylinder 2, and a sealing ring 6 is embedded in the sealing groove 12; in the assembled state of the lock cylinder 2 and the lock shell 1, the sealing ring 6 is located at the joint of the lock cylinder 2 and the lock shell 1 and forms a seal.

A positioning disc 20 is formed on the lock cylinder 2, the sealing groove 12 is arranged on the outer peripheral surface of the positioning disc 20, and a positioning ring 21 is formed on the inner wall of the assembly channel 10 corresponding to the positioning disc 20; in the assembled state of the lock cylinder 2 and the lock case 1, the lower surface of the positioning plate 20 abuts against the upper surface of the positioning ring 21.

A clamping groove 13 is arranged below the positioning disc 20 of the lock cylinder 2, and a clamping ring 7 is embedded in the clamping groove 13; in the assembled state of the lock core 2 and the lock shell 1, the upper surface of the clamping ring 7 abuts against the lower surface of the positioning ring 21, so that the positioning disc 20 and the clamping ring 7 clamp the positioning ring 21 together; the lock cylinder 2 is thus restrained so that it is vertically fixed relative to the lock housing 1 and only relative rotation can take place.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A short tensioning lock is characterized in that: comprises a lock shell, a lock core, a bolt and a compression spring;

a spiral groove is formed in the inner wall of the rotary drum, and in the assembly state of the lock, the end part of the pin shaft extends into the spiral groove to form that the lock tongue is driven to move in the vertical direction through the matching of the pin shaft and the spiral groove when the lock cylinder rotates; and in the unlocking state, the end part of the pin shaft is positioned at the uppermost end of the spiral groove, and in the locking state, the end part of the pin shaft is positioned at the lowermost end of the spiral groove.

2. A tension lock of short length as claimed in claim 1, wherein: the outer peripheral surface of the lock shell is provided with an external thread which is matched with a nut; the lock shell is provided with a shaft shoulder at the upper end of the external thread, and the nut and the shaft shoulder clamp a door body together in an installation state.

3. A tension lock of the short type according to claim 2, wherein: and a gasket is arranged between the shaft shoulder and the nut.

4. A tension lock of short length as claimed in claim 1, wherein: the lock cylinder is provided with a sealing groove below the switch action part, and a sealing ring is embedded in the sealing groove; and in the assembled state of the lock core and the lock shell, the sealing ring is positioned at the joint of the lock core and the lock shell to form sealing.

5. A tension lock of the short type according to claim 4, characterized in that: a positioning disc is formed on the lock cylinder, the sealing groove is formed in the outer peripheral surface of the positioning disc, and a positioning ring is formed on the inner wall of the assembling channel corresponding to the positioning disc; and in the assembled state of the lock core and the lock shell, the lower surface of the positioning disc abuts against the upper surface of the positioning ring.

6. The tension lock of claim 5, wherein: the lock cylinder is provided with a clamping groove below the positioning disc, and a clamping ring is embedded in the clamping groove; under the assembly state of lock core with the lock shell, the upper surface butt of rand in the lower surface of holding ring constitutes the positioning disk with the rand is common centre gripping the holding ring.

7. A tension lock of the short type according to claim 1, wherein: the limiting structure limits a relative rotation angle of the rotary drum and the assembling channel to be 0-90 degrees, wherein in an unlocking state, the relative rotation angle is 0 degree, in a locking state, the second end of the bolt abuts against a door frame, and the relative rotation angle is 90 degrees.

8. A tension lock of the short type according to claim 7, wherein: the limiting structure comprises a limiting block formed in the lockset and a step formed at the upper end of the rotary drum, and the limiting block and the step are matched with each other to achieve a limiting effect.

9. A tension lock of short length as claimed in claim 1, wherein: the helical groove rotates in a clockwise direction from an uppermost end to a lowermost end.

10. A tension lock of the short type according to claim 1, wherein: the spiral groove is provided with a recess at its lowermost end, so that in the locked state the end of the pin is located in the recess.