CN117927096A - Telescopic key - Google Patents

Abstract

The invention provides a telescopic key, which comprises a key handle, a key tooth body and a locking mechanism, wherein a telescopic cavity with one end open is arranged in the key handle; one end of the key tooth body is a tooth body part, the other end of the key tooth body is a supporting body, at least the supporting body is configured to slide between a retracted locking position and an extended locking position in the telescopic cavity, and the locking mechanism is composed of a locking component arranged on the supporting body and a locking structure arranged on the telescopic cavity; the locking structure is arranged on the telescopic cavity and corresponds to the locking component at the retracting locking position and the extending locking position of the key tooth body relative to the key handle, and the locking component is respectively locked or separated from the two locking structures, so that the key tooth body is locked at the retracting locking position or the extending locking position, or can slide in a telescopic manner relative to the key handle, and the key tooth body can be prevented from encountering relatively large inertia or being hung by an object to be stretched out in the carrying process by arranging the locking mechanism.

Description

Telescopic key

Technical Field

The invention relates to the technical field of locks, in particular to a telescopic key.

Background

The existing keys, in particular for unlocking blade locks, are long in length and inconvenient to carry or store.

For this reason, chinese patent No. CN201137340Y discloses a telescopic key, which comprises a key sheet, a holding part and a key shaft connecting the two, wherein the key shaft comprises a front link and a rear link, which are connected by a telescopic structure, the front part of the front link is connected with the key sheet, the rear part of the rear link is connected with the holding part, the telescopic structure is composed of a spring installed in a spring hole at the rear end part of the front link and a spring arranged on the spring, and the upper part of the spring is exposed out of the front link; the front end part of the rear connecting rod is provided with a positioning hole, and the diameter of the positioning hole is suitable for embedding the marble part; the inner cylinder wall of the rear connecting rod is provided with a guide groove extending in the extending and shrinking direction, and the rear end part of the front connecting rod is provided with a positioning block in sliding fit with the guide groove. The telescopic key adopts a telescopic structure, and is elongated when in use, and is shortened when not in use, and is convenient to carry or store.

The telescopic key is characterized in that when the front connecting rod stretches out, the marble is matched with the positioning hole for positioning, and the telescopic key is kept in an extension state; when the connecting rod is retracted, the marble lacks a corresponding positioning mechanism, and the shrinkage state can only be realized by the close fit between the marble and the inner pipe wall of the rear connecting rod; however, such retaining structures are not very reliable and may experience relatively large inertia during carrying or may be caught by objects and cause stretching out.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is that when the telescopic key in the prior art is retracted, the front connecting rod is easy to encounter relatively large inertia in the carrying process or is hung by an object to cause the front connecting rod to be pulled out of the inner guide groove of the rear connecting rod.

To this end, the invention provides a telescopic key comprising:

a key handle, in which a telescopic cavity with one end open is arranged;

A key tooth body, one end of which is a tooth body part, and the other end of which is a supporting body, wherein at least the supporting body is configured to slide between a retracting locking position and an extending locking position in the telescopic cavity;

The locking mechanism is composed of a locking component arranged on the supporting body and a locking structure arranged on the telescopic cavity; the locking structure is arranged on the telescopic cavity and corresponds to the locking assembly at the retracted locking position and the extended locking position of the key bit body relative to the key handle respectively; the locking component is respectively locked with or separated from the two locking structures so as to enable the key bit body to be locked at the retracted locking position or the extended locking position or can slide in a telescopic manner relative to the key handle.

Optionally, the locking component is a marble component arranged on the supporting body;

The locking structure comprises a retraction positioning hole and an extension positioning hole, wherein the retraction positioning hole is formed in the cavity wall of the telescopic cavity and is respectively positioned at the retraction locking position, and the extension positioning hole is positioned at the extension locking position.

Optionally, a limiting mechanism is arranged between the support body and the telescopic cavity so as to limit the telescopic distance of the key bit body.

Optionally, the limiting mechanism includes:

the support body is provided with a limit groove arranged along the expansion direction of the key tooth body, and the cavity wall of the expansion cavity is correspondingly provided with a limit pin which is suitable for being inserted into the limit groove; or (b)

The telescopic cavity wall is provided with a limiting groove arranged along the telescopic direction of the key tooth body, and the support body is correspondingly provided with a limiting pin which is suitable for being inserted into the limiting groove.

Optionally, two ends of the limiting groove are respectively corresponding to the support body in the telescopic cavity and are in a retracted locking position and an extended locking position, and are matched and abutted with the limiting pin.

Optionally, the limiting pin is fixedly installed through a pin hole arranged on the corresponding carrier.

Optionally, the limiting groove and the locking component are positioned on two opposite sides or adjacent two sides or the same side of the support body.

Optionally, the outer side edges of the retracted positioning hole and the extended positioning hole are conical depressions in an outward expansion shape, and in the locking state, the ball of the ball assembly is positioned in the conical depressions.

Optionally, the support body is configured to slide within the telescopic cavity between a retracted locking position and an extended locking position, the tooth body being retained outside the telescopic cavity.

Optionally, the key also comprises a sliding cover arranged on the key handle; the sliding cover can move relative to the key handle to drive the locking assembly to be converted from a locking state to a separation state.

Optionally, the sliding cover is configured to slide axially relative to the key handle, and a retracting unlocking protrusion and a extending unlocking protrusion are respectively arranged at positions of the sliding cover, which are close to a retracting locking position and an extending locking position on the key handle; the retraction positioning hole and the extension positioning hole are respectively connected with a strip-shaped accommodating limiting groove for accommodating the retraction unlocking protrusion and the extension unlocking protrusion to slide in; and the retraction unlocking protrusion and the extension unlocking protrusion are respectively provided with an unlocking auxiliary structure.

Optionally, the unlocking auxiliary structure is an unlocking chamfer slope arranged on the retraction unlocking protrusion and the extension unlocking protrusion.

Optionally, the retracting unlocking protrusion and the extending unlocking protrusion are located at the same side or different sides of the retracting positioning hole and the extending positioning hole, and the unlocking chamfer slope is arranged on one side of the retracting unlocking protrusion close to the retracting positioning hole and one side of the extending unlocking protrusion close to the extending positioning hole.

Optionally, an ejecting or retracting biasing member is provided in the telescopic cavity, the ejecting or retracting biasing member applying a biasing force towards the extended locking position to the key blade body in the retracted locking position or applying a biasing force towards the retracted locking position to the key blade body in the extended locking position.

Optionally, the ejecting or retracting biasing member is a spring, a rubber elastomer, or two magnets placed in a mutually repulsive relationship.

Optionally, a sliding groove is arranged on the sliding cover and is sleeved on the key handle, and the two opposite side walls of the sliding groove are bent inwards to form two matched buckles; the buckle is clamped on the key handle to prevent the key from falling off.

Optionally, a step is arranged on one side of the key handle, and the buckle is clamped on the surface of the step to limit the sliding cover.

The telescopic key provided by the invention has the following advantages:

1. The invention provides a telescopic key, which comprises a key handle, a key tooth body and a locking mechanism, wherein a telescopic cavity with one end open is arranged in the key handle; one end of the key tooth body is a tooth body part, the other end of the key tooth body is a supporting body, at least the supporting body is configured to slide between a retracted locking position and an extended locking position in the telescopic cavity, and the locking mechanism is composed of a locking component arranged on the supporting body and a locking structure arranged on the telescopic cavity; the locking structure is arranged on the telescopic cavity and corresponds to the locking component at the retracting locking position and the extending locking position of the key tooth body relative to the key handle, and the locking component is respectively locked or separated from the two locking structures so that the key tooth body is locked at the retracting locking position or the extending locking position or can slide in a telescopic manner relative to the key handle.

The telescopic key with the structure is characterized in that the locking mechanism is composed of a locking component arranged on the support body and a locking structure arranged on the telescopic cavity, the locking structure is arranged on the telescopic cavity and corresponds to a retracted locking position and an extended locking position of the key tooth body relative to the key handle, when the support body extends out of the telescopic cavity, the locking component on the support body is locked with the locking structure at the extended locking position of the telescopic cavity, so that the key handle and the key tooth body are kept fixed; when the support body is retracted into the telescopic cavity, the locking assembly on the support body is locked with the locking structure at the retracted locking position of the telescopic cavity, so that the key handle and the key tooth body are kept fixed; when the locking component on the support body is separated from the locking structures at two positions, the key tooth body can slide in a telescopic manner relative to the key handle.

2. The invention provides a telescopic key, wherein a limiting groove arranged along the telescopic direction of a key tooth body is formed in a supporting body, and a limiting pin suitable for being inserted into the limiting groove is correspondingly formed in the cavity wall of a telescopic cavity; or (b)

The telescopic cavity wall is provided with a limiting groove arranged along the telescopic direction of the key tooth body, and the support body is correspondingly provided with a limiting pin which is suitable for being inserted into the limiting groove.

The telescopic key of this structure is equipped with the spacing groove that sets up along key tooth body flexible direction through on the supporter, then corresponds on flexible chamber cavity wall to be equipped with the spacer pin that is suitable for inserting locating the spacing inslot, and the spacer pin inserts spacing inslot portion, so when the supporter slides at flexible intracavity portion, the spacer pin also slides at spacing inslot portion correspondingly, and because the restriction of spacing groove length, it can receive the butt of spacer pin when sliding to the end to realize limiting key tooth body flexible distance.

3. The invention provides a telescopic key, which also comprises a sliding cover arranged on the key handle; the sliding cover can move relative to the key handle to drive the locking assembly to be converted from a locking state to a separation state.

According to the telescopic key with the structure, through the arrangement of the sliding cover, the marble beads are pushed by the sliding cover, so that abnormal ejection of the key tooth body caused by external force can be prevented, the privacy of the key can be increased, and copying can be prevented by peeping, photographing and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view of a telescoping key provided in embodiment 1 of the present invention;

FIG. 2 is an exploded view of the back side of the telescoping key provided in embodiment 1 of the present invention;

FIG. 3 is a schematic view of the structure of a key handle in the retractable key provided in embodiment 1 of the present invention;

FIG. 4 is an exploded view of the telescoping key provided in embodiment 2 of the present invention;

FIG. 5 is an exploded view of the back side direction of the telescoping key provided in embodiment 2 of the present invention;

FIG. 6 is a schematic view of the structure of a key handle in the retractable key provided in embodiment 2 of the present invention;

fig. 7 is a schematic structural view of a slide cover in the telescopic key according to embodiment 2 of the present invention;

reference numerals illustrate:

1-a key handle; 11-a telescopic chamber; 12-retracting into the positioning hole; 13-extending the positioning hole; 14-pin holes; 15-steps;

2-key bit body; 21-a support; 22-limit grooves;

31-marble beads; 32-ball holes;

4-pin biasing member;

5-limiting pins;

6-sliding cover; 61-retracting the unlocking protrusion; 62-extending the unlocking protrusion; 63-snap;

7-ejecting or retracting biasing member.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

Example 1

The embodiment provides a telescopic key, as shown in fig. 1 to 3, which comprises a key handle 1, a key tooth body 2 and a locking mechanism, wherein a telescopic cavity 11 with one end open is arranged in the key handle 1; the key tooth body 2 has a tooth body part at one end and a supporting body 21 at the other end, at least the supporting body 21 is configured to slide between a retracted locking position and an extended locking position in the telescopic cavity 11, and the locking mechanism is composed of a locking component arranged on the supporting body 21 and a locking structure arranged on the telescopic cavity 11; the locking structures are arranged on the telescopic cavity 11 corresponding to the locking components at the retracting locking position and the extending locking position of the key bit body 2 relative to the key handle 1, and the locking components are respectively locked or separated from the two locking structures so that the key bit body 2 is locked at the retracting locking position or the extending locking position or can slide in a telescopic manner relative to the key handle 1.

In the present embodiment, the support body 21 is configured to slide between the retracted locking position and the extended locking position within the telescopic chamber 11, with the tooth body portion remaining outside the telescopic chamber 11.

In the above structure, as shown in fig. 3, the telescopic cavity 11 is formed in the cylindrical portion of the key handle 1, and one end of the telescopic cavity is open, and correspondingly, as shown in fig. 1 and 2, the support body 21 at one end of the key bit body 2 is also formed in a cylindrical shape so as to be mutually matched with the shape of the telescopic cavity 11, so as to realize sliding between the retracted locking position and the extended locking position in the telescopic cavity 11, and further realize the extension of the key. In order to enable the key to be stably extended or retracted, the locking mechanism comprises a locking assembly arranged on the supporting body 21 and a locking structure arranged on the telescopic cavity 11, specifically, the telescopic cavity 11 is provided with a retracted locking position and an extended locking position, the retracted locking position is a position where the supporting body 21 is fixed when retracted into the telescopic cavity 11 of the key handle 1, the extended locking position is a position where the supporting body 21 is fixed when extended out of the telescopic cavity 11, therefore, locking structures are arranged at the retracted locking position and the extended locking position on the telescopic cavity 11, and accordingly, the supporting body 21 is provided with a locking assembly which is used for locking or separating from the locking structure so as to enable the key tooth body 2 to be locked at the retracted locking position or the extended locking position or capable of being in telescopic sliding relative to the key handle 1. The method comprises the following steps: when the supporting body 21 extends out of the telescopic cavity 11, the locking component on the supporting body 21 is locked with the locking structure at the position where the telescopic cavity 11 extends out, so that the key handle 1 and the key bit body 2 are kept fixed; when the supporting body 21 is retracted into the telescopic cavity 11, the locking component on the supporting body 21 is locked with the locking structure at the retracted locking position of the telescopic cavity 11, so that the key handle 1 and the key bit body 2 are kept fixed; when the locking assembly on the support body 21 is separated from the locking structures at both positions, the key blade body 2 can slide telescopically relative to the key handle 1.

In this embodiment, as shown in fig. 2, the locking structure includes a retracting positioning hole 12 formed on a wall of the telescopic cavity 11 and respectively located at a retracting locking position, and an extending positioning hole 13 located at an extending locking position, and the locking component is a marble component disposed on the supporting body 21.

Specifically, the ball assembly includes a ball 31 and a ball hole 32 provided in the support 21 and adapted to receive the ball 31, the ball 31 being configured to be biased to partially protrude from the ball hole 32. The protruding part of the ball 31 is suitable for being clamped in the retracting positioning hole 12 or the extending positioning hole 13 so as to lock the key bit body 2 at the retracting locking position or the extending locking position, or the ball 31 is completely positioned in the ball hole 32 so as to enable the key bit body 2 to slide telescopically relative to the key handle 1.

Specifically, the pin assembly further includes a pin biasing member 4, the pin biasing member 4 being disposed within the pin bore 32 for providing a biasing force to the pin 31 that partially protrudes through the pin bore 32. The pin biasing member 4 is a spring or two magnets placed in a mutually repulsive manner.

In some embodiments, the pin 31 includes a base and a protrusion fixedly coupled to the base, the protrusion adapted to protrude through the pin hole 32 to engage the retracted pilot hole 12 and the extended pilot hole 13.

In the present embodiment, a limiting mechanism is provided between the support body 21 and the expansion chamber 11 to limit the expansion and contraction distance of the key bit body 2.

In some embodiments, as shown in fig. 1, the limiting mechanism includes a limiting groove 22 provided on the support 21 along the extending and retracting direction of the key bit body 2, and a limiting pin 5 adapted to be inserted into the limiting groove 22 is correspondingly provided on the cavity wall of the extending and retracting cavity 11. Or in other embodiments, the wall of the telescopic cavity 11 is provided with a limit groove 22 arranged along the telescopic direction of the key bit body 2, and the support body 21 is correspondingly provided with a limit pin 5 which is suitable for being inserted into the limit groove 22.

In the above-mentioned structure, as shown in fig. 1, the support body 21 is provided with the limit groove 22 arranged along the extending and retracting direction of the key bit body 2, then the cavity wall of the telescopic cavity 11 is correspondingly provided with the limit pin 5 suitable for being inserted into the limit groove 22, and the limit pin 5 is inserted into the limit groove 22, so that when the support body 21 slides in the telescopic cavity 11, the limit pin 5 correspondingly slides in the limit groove 22, and due to the limitation of the length of the limit groove 22, the limit groove can be abutted by the limit pin 5 when sliding to the tail end, so as to limit the extending and retracting distance of the key bit body 2.

In some embodiments, the limit pins 5 are fixedly mounted through pin holes 14 provided on the corresponding carrier. As shown in fig. 1, a pin hole 14 for placing the limiting pin 5 is formed in the cavity wall of the telescopic cavity 11, and the limiting pin 5 is fixed in the pin hole 14.

In this embodiment, as shown in fig. 1, the outer edges of the retracted positioning hole 12 and the extended positioning hole 13 are tapered recesses in an outward-expanding shape, and in the locked state, the ball 31 of the ball assembly is in the tapered recess, and the tapered recess can increase the area of the finger contacting the ball 31, so that the finger can be pressed more conveniently.

In the present embodiment, the limiting groove 22 and the locking assembly are located at two opposite sides of the supporting body 21. Of course, in other embodiments, the limiting groove 22 and the locking assembly may be located on two adjacent sides of the supporting body 21 or on the same side, and may be specifically set according to the use requirement.

Example 2

The present embodiment provides a retractable key, as shown in fig. 4 to 7, which is different from the retractable key in embodiment 1 in that:

In this embodiment, as shown in fig. 4, one end of the key handle 1 provided with the telescopic cavity 11 is flat, and correspondingly, the telescopic cavity 11 is flat; the support body 21 at one end of the key bit body 2 is also adapted to the expansion chamber 11 to be flat.

In this embodiment, as shown in fig. 5, a limiting groove 22 is provided on the wall of the telescopic cavity 11 along the telescopic direction of the key bit body 2, and a limiting pin 5 adapted to be inserted into the limiting groove 22 is correspondingly provided on the supporting body 21.

In this embodiment, the telescopic key comprises a sliding cover 6 arranged on the key handle 1, the sliding cover 6 being movable relative to the key handle 1 to actuate the locking assembly from the locked state to the disengaged state.

Specifically, as shown in fig. 6 and 7, the slide cover 6 is configured to slide axially relative to the key handle 1, and a retracting unlocking protrusion 61 and a extending unlocking protrusion 62 are respectively provided at positions of the slide cover 6 near the retracting locking position and the extending locking position on the key handle 1; the retracting positioning hole 12 and the extending positioning hole 13 are respectively connected with a strip-shaped accommodating limiting groove 22 for accommodating the retracting unlocking protrusion 61 and the extending unlocking protrusion 62 to slide in; unlocking auxiliary structures are arranged on the retracting unlocking protrusion 61 and the extending unlocking protrusion 62.

Further, a sliding cover 6 limiting structure is further provided on the sliding cover 6 to limit the sliding position distance of the sliding cover 6. Specifically, the limit structure of the sliding cover 6 is a vertical surface of the unlocking chamfer slope, and one end of the strip-shaped accommodating limit groove 22 is used for being abutted against one end of the vertical surface of the unlocking chamfer slope so as to limit the sliding position distance of the sliding cover 6. In other practical manners, the limiting structure of the sliding cover 6 may be a protrusion structure disposed at any position on the sliding cover 6, which can limit the sliding position distance of the sliding cover 6.

In this embodiment, as shown in fig. 7, the unlocking auxiliary structure is an unlocking chamfer provided on the retracting unlocking protrusion 61 and the extending unlocking protrusion 62, the retracting unlocking protrusion 61 and the extending unlocking protrusion 62 are located on opposite sides of the retracting positioning hole 12 and the extending positioning hole 13, and the unlocking chamfer is provided on one side of the retracting unlocking protrusion 61 close to the retracting positioning hole 12 and one side or both sides of the extending unlocking protrusion 62 close to the extending positioning hole 13.

Wherein, the above-mentioned heteroside is understood as: when the retracting unlocking protrusion 61 is positioned at the left side of the retracting positioning hole 12, the extending unlocking protrusion 62 is correspondingly arranged at the right side of the extending positioning hole 13, so that the retracting unlocking protrusion 61 is provided with an unlocking chamfer on the side close to the retracting positioning hole 12, and the extending unlocking protrusion 62 is provided with an unlocking chamfer on the side close to the extending positioning hole 13. Similarly, when the retracting unlocking protrusion 61 is located on the right side of the retracting positioning hole 12, the extending unlocking protrusion 62 is correspondingly disposed on the left side of the extending positioning hole 13, and the retracting unlocking protrusion 61 is provided with an unlocking chamfer on the side close to the retracting positioning hole 12, and the extending unlocking protrusion 62 is provided with an unlocking chamfer on the side close to the extending positioning hole 13.

The above structure is that the sliding cover 6 is axially slid relative to the key handle 1, specifically, the lower sides of the two sides of the sliding cover 6 are bent inwards to wrap the bottom side of the key handle 1, so that the sliding cover can slide on the key handle 1. As shown in fig. 7, a retracting unlocking protrusion 61 and an extending unlocking protrusion 62 are disposed on the inner side of the sliding cover 6, the retracting unlocking protrusion 61 is close to a retracting locking position on the key handle 1, the extending unlocking protrusion 62 is close to an extending locking position on the key handle 1, for facilitating pushing of the marble 31, unlocking chamfer slopes are disposed on the retracting unlocking protrusion 61 and the extending unlocking protrusion 62, and the retracting unlocking protrusion 61 and the extending unlocking protrusion 62 squeeze the marble 31 due to sliding of the sliding cover 6 relative to the key handle 1, and the retracting unlocking protrusion 61 and the extending unlocking protrusion 62 are disposed on the same side of the retracting positioning hole 12 and the extending positioning hole 13, so that the unlocking chamfer slopes are disposed on the side of the retracting unlocking protrusion 61 close to the retracting positioning hole 12 and the side of the extending unlocking protrusion 62 close to the extending positioning hole 13. When in use, taking fig. 4 as an example, when the key bit body 2 is locked in the extending state, the sliding cover 6 slides towards the extending positioning hole 13, and the extending unlocking protrusion 62 abuts against the marble 31 extending out of the positioning hole 13 through the unlocking chamfer slope thereon until the marble 31 is extruded and falls off the extending positioning hole 13, so that the key bit body 2 can slide freely. Similarly, when the key bit body 2 is locked in the retracted state, the sliding cover 6 slides towards the retracted positioning hole 12, and the retracted unlocking protrusion 61 abuts against the marble 31 on the retracted positioning hole 12 through the unlocking chamfer slope thereon until the marble 31 is extruded and falls off the retracted positioning hole 12, so that the key bit body 2 can slide freely.

By arranging the sliding cover 6, the ball 31 is pushed by the sliding cover 6, so that abnormal ejection of the key tooth body 2 caused by external force can be prevented, the privacy of the key can be increased, and the key can be prevented from being copied by peeping, photographing and the like.

In this embodiment, after the sliding cover 6 is slid in the direction of extending the positioning hole 13 so that the extending unlocking protrusion 62 abuts against the ball 31 on the extending positioning hole 13 through the unlocking chamfer slope thereon, the extending unlocking protrusion 62 is located at the extending positioning hole 13, and at this time, the retracting unlocking protrusion 61 is deviated from the retracting positioning hole 12 so that the ball 31 enters the retracting positioning hole 12 after being separated from the extending positioning hole 13. Similarly, when the retracting unlocking protrusion 61 is at the position of the retracting positioning hole 12, the extending unlocking protrusion 62 is deviated from the extending positioning hole 13 so that the ball 31 is separated from the retracting positioning hole 12 and enters the inside of the extending positioning hole 13.

In other embodiments, the retracting unlocking protrusion 61 and the extending unlocking protrusion 62 may be on the same side as the retracting positioning hole 12 and the extending positioning hole 13. That is, the retracting unlocking protrusion 61 and the extending unlocking protrusion 62 are located at the left side of the retracting positioning hole 12 and the extending positioning hole 13, or the retracting unlocking protrusion 61 and the extending unlocking protrusion 62 are located at the right side of the retracting positioning hole 12 and the extending positioning hole 13.

In this embodiment, as shown in fig. 5, a sliding groove for sleeving the key handle 1 is provided on the sliding cover 6, two opposite side walls of the sliding groove are bent inwards to form two anti-falling buckles 63, after the sliding cover 6 is slidably mounted on the key handle 1 through the sliding groove, the buckles 63 are clamped on the upper side of the key handle 1 to prevent falling, however, in this way, the buckles 63 are higher than the surface of the upper side of the key handle 1, and resistance is increased when a single hand holds a key to push a sliding block; correspondingly, the upper surface of the key handle 1 can be further provided with a step 15, and the buckle 63 is clamped on the surface of the step 15 to reduce the protrusion or not, so that the hand feeling can be improved when the sliding cover 6 is pushed by holding the key by one hand, and the resistance between the sliding cover 6 and the hand can be reduced.

In this embodiment, an ejecting or retracting biasing member 7 is provided in the telescopic chamber 11, the ejecting or retracting biasing member 7 exerting a biasing force on the key blade 2 in the retracted locking position toward the extended locking position. In particular, the ejection or retraction biasing member 7 is a spring, a rubber elastomer or two magnets placed in a mutually repulsive manner. The additional ejecting or retracting biasing member 7 can rapidly eject or retract the key bit body 2, i.e. if the key bit body 2 is pulled out by hand, the ejecting or retracting biasing member 7 is, for example, a tension spring, and the key handle 1 is pulled in; if the key blade 2 is pressed in by hand, the ejecting or retracting biasing member 7, for example a compression spring, will eject the key shank 1.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.

Claims (19)

1. A telescoping key, comprising:

A key handle (1) is provided with a telescopic cavity (11) with one end open;

a key bit body (2) with a bit body portion at one end and a support body (21) at the other end, at least the support body (21) being configured to slide between a retracted locking position and an extended locking position within the telescopic cavity (11);

the locking mechanism consists of a locking component arranged on the supporting body (21) and a locking structure arranged on the telescopic cavity (11); the locking structure is arranged on the telescopic cavity (11) and corresponds to the locking assembly at the retracting locking position and the extending locking position of the key bit body (2) relative to the key handle (1) respectively; the locking assembly is respectively locked with or separated from the two locking structures so as to enable the key bit body (2) to be locked at the retracted locking position or the extended locking position or can slide in a telescopic manner relative to the key handle (1).

2. A key according to claim 1, characterized in that said locking assembly is a pin assembly provided on said support body (21);

the locking structure comprises a retraction positioning hole (12) which is formed in the cavity wall of the retraction cavity (11) and is respectively positioned at the retraction locking position, and an extension positioning hole (13) which is positioned at the extension locking position.

3. A telescopic key according to claim 1 or 2, characterized in that a limiting mechanism is provided between the support body (21) and the telescopic cavity (11) to limit the telescopic distance of the key blade (2).

4. A telescoping key as defined in claim 3, wherein the limit mechanism comprises:

A limiting groove (22) arranged along the extending and retracting direction of the key bit body (2) is arranged on the supporting body (21), and a limiting pin (5) which is suitable for being inserted into the limiting groove (22) is correspondingly arranged on the cavity wall of the extending and retracting cavity (11); or (b)

The telescopic cavity (11) is provided with a limiting groove (22) arranged along the telescopic direction of the key bit body (2), and the supporting body (21) is correspondingly provided with a limiting pin (5) which is suitable for being inserted into the limiting groove (22).

5. The telescopic key according to claim 4, wherein the two ends of the limit groove (22) are respectively corresponding to the support body (21) in the telescopic cavity (11) and are in a retracted locking position and an extended locking position, and are matched and abutted with the limit pin (5).

6. A telescopic key according to claim 4 or 5, characterized in that the limit pin (5) is fixedly mounted through a pin hole (14) provided in the corresponding carrier.

7. A key according to any one of claims 4-6, characterized in that the limit groove (22) is located on opposite sides or adjacent sides or on the same side as the support body (21).

8. A key as defined in any one of claims 2-7, wherein the outer edges of the retracting and extending locating holes (12, 13) are tapered recesses of outwardly diverging shape, in which the pin beads (31) of the pin tumbler assembly are located in the locked state.

9. A key as defined in claim 8, wherein the support body (21) is configured to slide within the telescopic cavity (11) between a retracted locking position and an extended locking position.

10. A telescoping key according to any one of claims 2-9, further comprising a sliding cover (6) provided on the key shank (1); the sliding cover (6) can move relative to the key handle (1) to drive the locking assembly to be converted from a locking state to a separation state.

11. The telescopic key according to claim 10, wherein the sliding cover (6) is configured to slide axially relative to the key shank (1), the sliding cover (6) being provided with a retracting unlocking protrusion (61) and an extending unlocking protrusion (62) near a retracting locking position and an extending locking position on the key shank (1), respectively; the retraction positioning hole (12) and the extension positioning hole (13) are respectively connected with a strip-shaped containing limiting groove (22) for containing the retraction unlocking protrusion (61) and the extension unlocking protrusion (62) to slide in; and unlocking auxiliary structures are arranged on the retraction unlocking protrusion (61) and the extension unlocking protrusion (62).

12. The telescopic key according to claim 11, wherein the unlocking aid is an unlocking chamfer ramp provided on the retracting unlocking protrusion (61) and the extending unlocking protrusion (62).

13. The telescopic key according to claim 12, wherein the retracting unlocking protrusion (61) and the extending unlocking protrusion (62) are located on the same side or different sides of the retracting positioning hole (12) and the extending positioning hole (13), and the unlocking chamfer slope is arranged on one side of the retracting unlocking protrusion (61) close to the retracting positioning hole (12) and one side of the extending unlocking protrusion (62) close to the extending positioning hole (13).

14. The retractable key according to claim 12 or 13, wherein a sliding cover (6) limiting structure is further arranged between the sliding cover (6) and the key handle (1) to limit the sliding position distance of the sliding cover (6).

15. The telescopic key according to claim 14, wherein the limit structure of the sliding cover (6) is a vertical surface of the unlocking chamfer ramp, and the vertical surface is adapted to abut against the elongated receiving limit groove (22) to limit the sliding position distance of the sliding cover (6).

16. A telescoping key according to any one of claims 10-15, wherein an ejecting or retracting biasing member (7) is provided in the telescoping chamber (11), the ejecting or retracting biasing member (7) exerting a biasing force on the key blade (2) in the retracted locking position towards the extended locking position or on the key blade (2) in the extended locking position towards the retracted locking position.

17. A key as defined in claim 16, wherein said ejecting or retracting biasing member (7) is a spring, a rubber elastomer or two magnets placed in a mutually repulsive manner.

18. The telescopic key according to any one of claims 10-17, wherein the sliding cover (6) is provided with a sliding groove for sleeving the key handle (1), opposite side walls of the sliding groove are bent inwards to form two mutually matched buckles (63), and the buckles (63) are clamped on the key handle (1) to prevent falling.

19. The telescopic key according to claim 18, wherein a step (15) is provided on one side of the key handle (1), and the buckle (63) is clamped on the surface of the step (15) to limit the sliding cover (6).