CN108827069B

CN108827069B - Telescopic reverse-pulling concealed unlocking mechanism and unlocking method

Info

Publication number: CN108827069B
Application number: CN201810375363.1A
Authority: CN
Inventors: 汪浩
Original assignee: Guangzhou Ciyu Security Technology Co ltd
Current assignee: Guangzhou Ciyu Security Technology Co ltd
Priority date: 2018-04-24
Filing date: 2018-04-24
Publication date: 2023-08-25
Anticipated expiration: 2038-04-24
Also published as: CN108827069A

Abstract

The invention discloses a telescopic reverse-pulling concealed unlocking mechanism and an unlocking method, wherein the unlocking mechanism comprises an unlocking driving mechanism, a locking mechanism and a telescopic unlocking reverse-pulling rod; a telescopic unlocking counter pull rod is arranged between the unlocking driving mechanism and the locking mechanism; the unlocking method is that the unlocking driving mechanism gives a reverse pulling force to the telescopic unlocking reverse pull rod, and the locking mechanism is unlocked through the reverse pulling force. By utilizing the structure of the invention, the unlocking end of the unlocking rod is arranged backwards, the space occupied by the unlocking rod is small, and when the spontoon is retracted, the telescopic unlocking reverse pull rod can be folded, so that the inner cavity of the holding rod has enough use space, the space can be fully utilized, and the telescopic unlocking reverse pull rod is used, therefore, the structure is stable, and the maintenance cost is low.

Description

Telescopic reverse-pulling concealed unlocking mechanism and unlocking method

Technical Field

The invention relates to a spontoon, in particular to a reverse pull unlocking spontoon.

Background

The telescopic spontoon is a police instrument, and is in a telescopic state when not in use, and is used by being thrown out.

The prior telescopic spontoon mainly has two structures, one is a resistance structure, and the other is to realize locking and unlocking by a mechanical structure.

A telescopic baton is disclosed in the patent document of chinese patent application No. 201710269991.7, filing date 2017.4.24. Comprises an outer tube; a middle tube; a rear tube; a middle tube locking mechanism; a rear tube locking mechanism; an unlocking mechanism; the impact head is characterized in that: the middle tube locking mechanism comprises a first drum butterfly, a second drum butterfly and a pair of drum butterfly springs, wherein the first drum butterfly is in sliding fit with a first drum butterfly sliding groove cavity, a first drum butterfly lug is arranged on one side of the first drum butterfly, which faces the middle tube cavity, a first drum butterfly unlocking hole is arranged at the central position of the first drum butterfly lug, a first drum butterfly anti-impact groove is arranged on the right side of the first drum butterfly, a second drum butterfly lug is arranged on one side of the second drum butterfly, which faces the middle tube cavity, a second drum butterfly unlocking hole is arranged on the second drum butterfly lug and corresponds to the first drum butterfly unlocking hole, a second drum butterfly anti-impact groove is arranged on the right side of the second drum butterfly, and a pair of drum butterfly springs are supported between the first drum butterfly and the second drum butterfly. The left end of the middle tube and the right end of the outer tube are reliably locked, and the left end of the rear tube and the right end of the middle tube can be reliably locked. The unlocking mechanism comprises a supporting cover, an unlocking rod fixing seat, an unlocking button, an unlocking spring and an unlocking rod, wherein the supporting cover is matched with the left end of the outer tube and stretches into the outer tube cavity, the supporting cover is provided with an unlocking spring cavity, the unlocking rod fixing seat is in sliding fit with an unlocking rod fixing seat matching hole formed in the central position of the bottom wall of the supporting cover, the unlocking button is arranged at a position corresponding to the unlocking spring cavity, the unlocking spring is positioned in the unlocking spring cavity, one end of the spring is supported on one side of the unlocking button, which faces the unlocking rod fixing seat, the other end of the unlocking spring is supported on one side of the bottom wall of the supporting cover, which faces the unlocking spring cavity, the unlocking rod is positioned in the outer tube cavity, a screw head is formed at the left end of the unlocking rod, the screw head is screwed into the unlocking rod fixing seat and the unlocking button sequentially, and an unlocking rod guide head is formed at the right end of the unlocking rod and corresponds to the unlocking hole of the first drum butterfly.

When the telescopic spontoon with the structure is not used, the middle tube and the rear tube are contracted into the outer tube, the unlocking rod enables the first drum disc and the second drum disc to overcome the inward movement of the drum disc springs, and the unlocking rod enables the third drum disc and the fourth drum disc to overcome the inward movement of the drum disc springs. If a spontoon needs to be used, an outer tube is held by a hand, a middle tube and a rear tube are thrown outwards, at this time, a middle tube locking mechanism moves along with the middle tube, a rear tube locking mechanism moves along with the rear tube, when a first drum disc and a second drum disc move to the guide head of an unlocking rod, the first drum disc and the second drum disc move outwards under the action of a drum disc spring, the first drum disc and the second drum disc are clamped in a middle tube locking groove, when the middle tube locking mechanism moves to the guide head, the rear tube locking mechanism is released from the unlocking rod, and when the rear tube locking mechanism moves to the rear tube locking groove, a third drum disc and a fourth drum disc move outwards under the action of the drum disc spring, and the third drum disc and the fourth drum disc are clamped in the rear tube locking groove. If the spontoon needs to be retracted, the unlocking mechanism is pressed, the unlocking rod acts on the first drum disc and the second drum disc, under the action of the unlocking rod, the first drum disc and the second drum disc overcome the elastic force of the drum disc spring to move inwards, the first drum disc and the second drum disc are separated from the middle tube locking groove, the middle tube is retracted into the outer tube, meanwhile, the rear tube moves along with the middle tube, after the middle tube is retracted into place, the unlocking mechanism is pressed, the unlocking rod acts on the third drum disc and the fourth drum disc, under the action of the unlocking rod, the third drum disc and the fourth drum disc overcome the elastic force of the drum disc spring to move inwards, the third drum disc and the fourth drum disc are separated from the rear tube locking groove, and the rear tube is retracted into the middle tube. In order to achieve the throwing-out locking of the middle pipe and the rear pipe, the middle pipe locking groove must be arranged close to the rear end of the outer pipe, the rear pipe locking groove must be arranged close to the rear end of the middle pipe, therefore, the length potential of the unlocking rod must occupy most of the axial space of the outer pipe, the guide head must face backwards, and after the middle pipe and the rear pipe are retracted, the outer pipe has no more utilization space because the unlocking rod occupies. In addition, the unlocking rod is fixedly connected with the unlocking mechanism to realize the functions of the telescopic spontoon.

In the patent document of the chinese patent application No. 201310422167.2 and the application day 2013.9.16, there is disclosed a telescopic control mechanism for a baton, the telescopic control mechanism includes a brake mechanism and a release mechanism, wherein the brake mechanism is disposed on an inner tube adjacent to one end of the inner tube, the other end of the inner tube can pass through one end of an outer tube and is exposed from the other end of the outer tube, in addition, a locking groove is disposed on an inner wall of the outer tube adjacent to the other end of the inner tube, when one end of the inner tube abuts against the other end of the outer tube, at least one brake pad of the brake mechanism is expanded outwards due to elastic force and is embedded into the locking groove, the tube is elongated to form a long rod shape, in addition, the release mechanism is fixedly disposed on one end of the outer tube, and when one end of the release mechanism is pressed, the other end of the release mechanism is inserted into a release hole of the brake mechanism to release the brake pad, so that the brake pad is retracted inwards and no longer embedded into the locking groove, and the inner tube can be condensed into the outer tube to form a short rod shape. The release mechanism has a release lever body, and the telescopic control mechanism described in the patent document is basically the same as that of a telescopic spontoon with the Chinese patent application number 201710269991.7, and the same problems are that: to accomplish the braking and releasing, the length of the release lever must occupy most of the axial space of the outer tube, and the free end of the release lever must be directed rearward, so that after the inner tube is retracted, no more space is available in the outer tube due to the release lever. In addition, the release rod body needs to be fixedly connected with the release mechanism to realize the functions of the telescopic spontoon.

The applicant applies for a reverse stretching unlocking telescopic spontoon, which comprises a holding rod and a striking rod, wherein one end of the striking rod is inserted into the holding rod; a clamping groove is arranged on the inner wall of the front end of the holding rod; the rear end of the holding rod is connected with an unlocking driving mechanism, the rear end of the striking rod is connected with an unlocking mechanism, and a connecting piece is arranged between the unlocking driving mechanism and the unlocking mechanism; the unlocking mechanism comprises a clamping seat, an elastic snap ring, an unlocking rod and an elastic piece, wherein the clamping seat is connected to the striking rod, a resisting part is arranged in the clamping seat, a containing cavity is arranged in the clamping seat, a sliding groove cavity which extends radially and is communicated with the containing cavity is arranged on the clamping seat, the elastic snap ring is arranged in the containing cavity and penetrates through the sliding groove cavity, the elastic snap ring can be matched with the clamping groove, the unlocking rod penetrates through the resisting part and the elastic snap ring, the unlocking rod comprises a large end part and a small end part, the small end part is connected to the rear end of the large end part, the small end part is connected with a resisting pull ring part, the resisting pull ring part is positioned at the rear end of the resisting part, the resisting part resists the pull ring part, the elastic piece is connected between the unlocking rod and the clamping seat, and the connecting piece is connected between the resisting pull ring part and the unlocking driving mechanism. The connecting piece adopts the stay cord, but in actual experimental process, in the repeated stick-out and stick-in process, the stay cord is broken very easily for the life surface of baton is short, and the structure is unreliable, and the maintenance is frequent, and is with high costs.

Disclosure of Invention

The invention aims to provide a telescopic reverse-pulling concealed unlocking mechanism. By utilizing the structure of the invention, the unlocking end of the unlocking rod is arranged backwards, the space occupied by the unlocking rod is small, and when the spontoon is retracted, the telescopic unlocking reverse pull rod can be folded, so that the inner cavity of the holding rod has enough use space, the space can be fully utilized, and the telescopic unlocking reverse pull rod is used, therefore, the structure is stable, and the maintenance cost is low.

In order to achieve the above purpose, a telescopic reverse-pulling concealed unlocking mechanism is characterized in that: comprises an unlocking driving mechanism, a locking mechanism and a telescopic unlocking reverse pull rod; a telescopic unlocking counter pull rod is arranged between the unlocking driving mechanism and the locking mechanism;

the unlocking driving mechanism comprises a base, a driving plate, a connecting rod mechanism and a reset mechanism, wherein the driving plate is arranged in the base, the connecting rod mechanism acts on the driving plate, and the reset mechanism is arranged between the base and the driving plate;

the locking mechanism comprises a clamping seat, an unlocking rod, an elastic piece and a clamping device, wherein the clamping seat is provided with an axially extending through hole, the clamping device is arranged on the clamping seat, the unlocking rod penetrates through the through hole or stretches into the through hole from the front end of the clamping seat, the unlocking rod acts with the clamping device, and the elastic piece is arranged between the clamping seat and the unlocking rod;

The telescopic unlocking reverse pull rod comprises more than two sections of telescopic pipes, wherein adjacent telescopic pipes are connected in a sliding mode, a limiting device is arranged between the adjacent telescopic pipes, the telescopic pipe close to the unlocking rod is connected to one end of the unlocking rod, and the telescopic pipe far away from one end of the unlocking rod is connected to the unlocking driving mechanism.

With the structure, the unlocking rod cannot move backwards under the action of the elastic piece on the premise that the reverse pulling force of the unlocking rod is not given. If unlocking is needed, the driving plate is pressed, the driving plate drives the connecting rod mechanism to overcome the force of the reset mechanism to apply a pulling force to the telescopic unlocking reverse pull rod, the telescopic unlocking reverse pull rod drives the unlocking rod to overcome the elastic force of the elastic piece to move backwards, and the outer end of the clamping device is driven to move inwards through the unlocking rod, so that unlocking is realized. In this structure, through reverse installation unlocking lever to utilize the pulling force to realize the unblock, the space that the unlocking lever occupy is little, and the telescopic unblock is reversed the pull rod by the withdrawal moreover, and the telescopic unblock of withdrawal is reversed the pull rod and is equivalent to the length of a flexible pipe, therefore, telescopic unblock is reversed the pull rod and the space that latched device occupy is little, moreover, adopts telescopic unblock to be reversed the pull rod, and telescopic unblock is reversed the pull rod and is difficult to damage, has improved the life of baton, has reduced cost of maintenance.

Further, more than one circumferentially distributed ball holes which are communicated with the through holes and extend radially are arranged on the clamping seat, and the clamping device is a ball arranged in the ball holes; the unlocking rod comprises a rod body and an unlocking section connected to the rear end of the rod body, the outer diameter of the rod body is smaller than that of the unlocking section, and a telescopic pipe close to the unlocking rod is connected to the unlocking section. In this structure, since the sliding friction is converted into rolling friction by the ball structure, the friction force is small. In the above structure, since the outer diameter of the rod body is smaller than the outer diameter of the unlocking section, when the ball is in position correspondence with the unlocking section, the ball is ejected out, and when the ball is in the position of the rod body, a space for returning is provided for the ball.

Further, a sliding groove cavity which extends radially and is communicated with the through hole is formed in the clamping seat, the clamping device is an elastic clamping ring, the elastic clamping ring penetrates through the sliding groove cavity, the unlocking rod comprises a large end and a small end, the small end is connected to the rear end of the large end, and a telescopic tube which is close to the unlocking rod is connected to the small end. According to the structure, when the unlocking is not performed, the elastic snap ring corresponds to the position of the small end part in the radial direction, the unlocking rod does not have acting force on the elastic snap ring, if unlocking is required, a reverse pulling force is given to the unlocking rod, the large end part of the unlocking rod extrudes the elastic snap ring, and the elastic snap ring retracts under the action of the large end part, so that unlocking is realized.

Further, the front end of the unlocking rod is provided with a blocking block, and the elastic piece is sleeved on the unlocking rod positioned on the blocking block and the clamping seat; an annular groove is arranged on the outer wall of the rear end of the clamping seat, and an elastic ring is arranged in the annular groove.

Further, a chamfer is arranged between the rod body and the unlocking section. In the process of enabling the balls to be overhead with the unlocking section, the chamfering is arranged, and the balls are spherical, so that the balls can enter the unlocking section from the rod body more easily.

Furthermore, a connecting part is arranged between the large end part and the small end part, and the connecting part is in a truncated cone shape. Thus, when the unlocking rod is pulled, the large end part is easier to be inserted into the elastic clamping ring through the connecting part.

Further, the diameter of the telescopic pipe in the telescopic unlocking reverse pull rod is sequentially reduced from the front end to the rear end; the limiting device comprises an inner abutting ring arranged at one end of the inner wall of one telescopic pipe and an outer abutting ring arranged on the outer wall of one end of the adjacent telescopic pipe, and the outer abutting ring in the same limiting device is positioned in front of the inner abutting ring; an inner limiting ring is arranged on the inner wall of the rear end of the unlocking rod, an outer limiting ring is arranged on the outer wall of one end, which is close to the unlocking rod, of the telescopic pipe extending into the unlocking rod, the outer limiting ring is positioned in front of the inner limiting ring, and the telescopic pipe close to the unlocking rod is inserted into the unlocking rod in a sliding mode. According to the structure, after the telescopic unlocking reverse pull rod is recycled, the telescopic unlocking reverse pull rod can be completely hidden in the unlocking rod, and therefore the recycled telescopic unlocking reverse pull rod does not need to occupy space. Because the inner and outer abutting rings are arranged, when the reverse pulling force is applied, the adjacent telescopic pipes are not separated due to the deformation of the stretching pipes, and the stress of the telescopic unlocking reverse pull rod is more reliable. Because the inner limiting ring and the outer limiting ring are arranged, when the reverse pulling force is applied, the telescopic pipe is not separated from the locking rod due to the deformation of the telescopic pipe and the unlocking rod, and the stress of the structure is more reliable.

Further, the base is provided with a containing cavity extending forwards from the rear end to the middle part, and the front end of the base is provided with a cavity extending backwards to the containing cavity; the driving plate is arranged in the accommodating cavity; the connecting rod mechanism comprises a first connecting rod, a second connecting rod and a third connecting rod, wherein the middle part of the first connecting rod is hinged on a base positioned at one side in the cavity, the middle part of the second connecting rod is hinged on a base positioned at one side opposite to the first connecting rod, waist-shaped grooves are formed in two ends of the third connecting rod, the third connecting rod is positioned between the first connecting rod and the second connecting rod, a first sliding pin penetrates through the waist-shaped grooves in one end of the first connecting rod, the rear end of the first connecting rod is positioned in front of the driving plate, a second sliding pin penetrates through the waist-shaped grooves in the other end of the second connecting rod, and the rear end of the second connecting rod is positioned in front of the driving plate; the reset mechanism comprises a pull rod and a reset spring, the pull rod penetrates through the base and is connected to the driving plate, and the reset spring is sleeved on the pull rod between the base and the driving plate; the telescopic unlocking counter pull rod is connected to the middle of the third connecting rod.

According to the structure, under the action of the reset mechanism, the driving plate is always subjected to backward force, when the driving plate is subjected to forward force, the driving plate overcomes the elastic force of the reset spring to move forwards, and the driving plate drives the first connecting rod and the second connecting rod to swing, so that the third connecting rod is driven to move backwards in parallel, and reverse pulling force is provided. In this structure, owing to set up waist type groove, consequently, then can drive third connecting rod rectilinear movement when first connecting rod and second connecting rod swing, this structure does not adopt the pendulum rod structure, lets the middle part that the reverse pull rod of telescopic unblock is connected to the third connecting rod, lets the atress of the reverse pull rod of telescopic unblock even.

Drawings

Fig. 1 is a perspective view of a telescopic baton.

Fig. 2 is an exploded view of the telescopic baton of example 1.

Fig. 3 is a front view of the embodiment 1 with the striking rod of the telescopic baton extended.

Fig. 4 is a cross-sectional view A-A of fig. 3.

Fig. 5 is a sectional view of B-B in fig. 4.

Fig. 6 is a schematic view of a telescopic baton according to example 1 with the striking rod retracted.

Fig. 7 is an exploded view of the unlocking drive mechanism.

Fig. 8 is a top view of the unlocking drive mechanism.

Fig. 9 is a cross-sectional view of fig. 8C-C.

Fig. 10 is a perspective view of the latch mechanism of embodiment 1.

Fig. 11 is an exploded view of the latch mechanism of embodiment 1.

Fig. 12 is a sectional view of the latch mechanism of embodiment 1.

Fig. 13 is an exploded view of the telescoping unlocking counter pull rod.

Fig. 14 is an exploded view of the telescopic baton of example 2.

Fig. 15 is a front view of the telescopic baton striking rod according to example 2 when extended.

Fig. 16 is a sectional view D-D of fig. 15.

Fig. 17 is a sectional view of E-E of fig. 16.

Fig. 18 is a schematic view of a telescopic baton according to example 2 with the striking rod retracted.

Fig. 19 is a perspective view of the latch mechanism of embodiment 2.

Fig. 20 is an exploded view of the latch mechanism of embodiment 2.

Fig. 21 is a sectional view of the latch mechanism of embodiment 2.

Detailed Description

The invention will be described in further detail with reference to the drawings and the detailed description.

Example 1.

As shown in fig. 1 to 6, the telescopic baton includes a grip lever 1, a striking lever 2, an unlocking driving mechanism 3, a locking mechanism 4 and a telescopic unlocking counter pull lever 5. The rear end of the striking rod 2 is inserted into the holding rod 1.

In the present invention, referring to fig. 3, the left end in the view is the rear end, and the right end in the view is the front end.

The telescopic reverse-pulling concealed unlocking mechanism comprises an unlocking driving mechanism 3, a locking mechanism 4 and a telescopic unlocking reverse-pulling rod 5.

As shown in fig. 1 to 6, a clamping groove 11 is formed in the inner wall of the front end of the holding rod 1, an annular groove 12 is formed in the inner wall of the holding rod, which is positioned in front of the clamping groove 11, an elastic ring 110 is arranged in the annular groove 12, and an internal thread is formed in the inner wall of the rear end of the holding rod 1.

An internal thread is arranged at the rear end of the striking rod 2, and an internal thread is arranged on the inner wall of the front end of the striking rod 2.

As shown in fig. 7 to 9, the unlocking drive mechanism 3 includes a base 31, a drive plate 32, a link mechanism 33, and a return mechanism 34.

The base 31 has a base front end 312 and a base rear end 311, the diameter of the base rear end 311 is larger than that of the base front end 312, an external thread is arranged on the outer wall of the base front end 312, and the external thread is matched with an internal thread at the rear end of the holding rod 1 to connect the base to the holding rod 1; a relief 310 is provided between the base front end 312 and the base rear end 311. The base 31 has a receiving cavity 313 extending forward from a rear end to a middle portion, and a cavity 314 extending backward to the receiving cavity 313 is formed at a front end of the base 31, wherein a cross section of the receiving cavity 313 is circular, and a cross section of the cavity 314 is rectangular.

The driving plate 32 is disposed in the accommodating chamber 313.

The link mechanism 33 includes a first link 331, a second link 332 and a third link 333, the middle part of the first link 331 is hinged on the base 31 located at one side of the cavity 314 through a first hinge axis 334, a blind hole or a slot extending radially is provided on the first hinge axis 334, and a screw 338 extending into the blind hole or the slot is installed on the base 31, so that the first hinge axis 334 can be prevented from moving axially, and the first link 331 is prevented from being separated from the base 31; the middle part of the second connecting rod 332 is hinged on the base 31 positioned in the cavity 314 and at the side opposite to the first connecting rod through a second hinge shaft 335, a blind hole or a radially extending groove is arranged on the second hinge shaft 335, and a screw 339 extending into the blind hole or the groove is arranged on the base 31, so that the second hinge shaft 335 can be prevented from moving axially, and the second connecting rod 332 is prevented from being separated from the base 31; waist-shaped grooves 3331 are formed at both ends of the third link 333, the third link 33 is positioned between the first link 331 and the second link 332, a first sliding pin 336 is passed between the front end of the first link 331 and the waist-shaped groove at one end of the third link 333, the rear end of the first link 331 is positioned in front of the driving plate 32, a second sliding pin 337 is passed between the front end of the second link 332 and the waist-shaped groove at the other end of the third link 333, and the rear end of the second link 332 is positioned in front of the driving plate 32.

The reset mechanism 34 includes a pull rod 341 and a reset spring 342, the pull rod 341 is a bolt, the pull rod passes through the front end 312 of the base and is connected to the driving plate 32 through the accommodating cavity by threads, and the reset spring 342 is sleeved on the pull rod 341 between the front end of the base and the driving plate 32.

As shown in fig. 10 to 12, the latch mechanism 4 includes a holder 41, an unlocking lever 42, an elastic member 43, and a catching device 45 that can be caught in the catching groove.

The holder 41 includes a holder rear end 411 and a holder front end 412, and an external thread is provided on the holder front end 412, and the holder 41 is connected to the rear end of the striking rod 2 by being connected to the internal thread of the striking rod rear end. The clamping seat 41 is provided with an axially extending through hole 413, a countersunk hole 414 coaxial with the through hole 413 is arranged at the front end of the clamping seat, more than one circumferentially distributed ball holes 415 which are communicated with the through hole 413 and extend radially are arranged at the rear end 411 of the clamping seat, and the clamping device 45 is a ball 451 arranged in the ball holes; a plurality of balls 451 can be mounted in the same ball hole.

The unlocking rod 42 is of a hollow structure, the unlocking rod penetrates through the through hole or stretches into the through hole from the front end of the clamping seat, the unlocking rod 42 comprises a rod body 421 and an unlocking section 422 connected to the rear end of the rod body 421, the outer diameter of the rod body 421 is smaller than that of the unlocking section 422, a chamfer 425 is arranged between the rod body 421 and the unlocking section 422, namely, the chamfer is in transition, in this way, in the process of enabling the ball 451 to be in overhead with the unlocking section 422, the ball is in a spherical shape, and therefore the ball can enter the unlocking section from the rod body more easily. A stopper 423 is provided at the front end of the rod 421. The elastic piece is a spring, the elastic piece 43 is sleeved on the unlocking rod positioned on the supporting block 423 and the countersunk hole, and the countersunk hole can limit the spring.

An annular groove 416 is provided on the rear outer wall of the cartridge and an elastomeric ring 46 is provided in the annular groove. Generally, as shown in fig. 4, a groove 61 is formed in the inner wall of the front end of the holding rod 1 located in the clamping groove, and an elastic ring 62 is disposed in the groove, and an elastic ring is also disposed on the clamping seat 41, so that when the striking rod 2 extends out, the elastic rings can make the gap between the holding rod and the striking rod small at both ends of the clamping groove, and the two elastic rings make the stress between the holding rod and the striking rod uniform, so that the striking rod is not easy to shake relative to the holding rod.

As shown in fig. 12, an inner stopper 424 is provided on the inner wall of the rear end of the unlocking lever.

The inner wall of the striking rod is provided with a clamping groove 91, a clamping ring 92 is clamped on the clamping groove 91, a jacking block 93 connected with the clamping ring or jacked by the clamping ring is arranged in the striking tube, the jacking block 93 is used for limiting the front end of the unlocking rod, the unlocking rod is prevented from being separated from the clamping seat, and the reliability of use is improved. Of course, the unlocking rod can be limited by arranging a limiting device between the clamping seat and the unlocking rod, if an outer flange is arranged at the rear end of the unlocking rod, the outer flange is blocked by the clamping seat, and the unlocking rod can be installed only by the structure that the blocking block and the unlocking rod are connected through threads.

As shown in fig. 2, 4, 5 and 13, the telescopic unlocking reverse pull rod 5 comprises more than two sections of telescopic tubes 51, adjacent telescopic tubes are connected in a sliding manner, and the diameters of the telescopic tubes in the telescopic unlocking reverse pull rod are sequentially reduced from the front end to the rear end; a limiting device is arranged between the adjacent telescopic pipes, the limiting device comprises an inner abutting ring 512 arranged on one end of the inner wall of one telescopic pipe and an outer abutting ring 511 arranged on the outer wall of one end of the adjacent telescopic pipe, and the outer abutting ring in the same limiting device is positioned in front of the inner abutting ring. An outer limiting ring 50 is arranged on the outer wall of one end, which is close to the unlocking rod, of the telescopic pipe extending into the unlocking rod, the outer limiting ring 50 is positioned in front of the inner limiting ring 424, and the telescopic pipe close to the unlocking rod is inserted into the unlocking rod in a sliding mode. The telescopic pipe far away from one end of the unlocking rod is connected to the middle part of the third connecting rod through threads, and other telescopic pipes except the telescopic pipe connected with the third connecting rod can be solid or hollow and are of hollow structures.

According to the structure, on the premise that the reverse pulling force of the unlocking rod is not given, the unlocking rod cannot move backwards under the action of the spring, when the striking rod is in the retracted state, the ball corresponds to the position of the rod body in the radial direction, and the outer diameter of the rod body is smaller than that of the unlocking section, so that the ball cannot be blocked with the inner wall of the holding rod. If need use, throw away forward or pull out the striking rod, the ball corresponds with the position of body of rod, after the draw-in groove is put to the ball card, the unblock section withstands the ball, the ball is put to the draw-in groove, and under the effect to the reverse tensile force of unblock pole, under the effect of elastic component, the unblock section overhead is on the ball all the time, prevent that the striking rod from breaking away from holding rod or retracting, if need retrieve the striking rod, through the reverse tensile force of unblock actuating mechanism for telescopic unblock reverse pull rod, unblock actuating mechanism's theory of operation is: under the action of the reset spring, the driving plate is always subjected to backward force, when the driving plate is given a forward force, the driving plate overcomes the elastic force of the reset spring to move forwards, and the driving plate drives the first connecting rod and the second connecting rod to swing, so that the third connecting rod is driven to move backwards in parallel, and reverse pulling force is provided. In this structure, owing to set up waist type groove, consequently, then can drive third connecting rod rectilinear movement when first connecting rod and second connecting rod swing, this structure does not adopt the pendulum rod structure, lets the middle part that the reverse pull rod of telescopic unblock is connected to the third connecting rod, lets the atress of the reverse pull rod of telescopic unblock even. When the third connecting rod moves backwards, the telescopic unlocking reverse pull rod is pulled to drive the unlocking rod to move backwards, the unlocking section breaks away from the ball, the rod body gives the space for the ball to move inwards, and under the action of the pulling force, the ball breaks away from the clamping groove, so that the striking rod is recovered. In the retracting process of the striking rod, the telescopic tube is retracted into the adjacent telescopic tube, and the telescopic tube connected with the unlocking rod is retracted into the unlocking tube. In this structure, through reverse installation unlocking lever to utilize the pulling force to realize the unblock, the unlocking lever only needs to set up at the rear end of striking pole and occupy the very little space of striking pole rear end and can realize the recovery of striking pole, after striking pole is retrieved, latch mechanism is located the rear end of holding rod, and telescopic unblock is by the withdrawal to the reverse pull rod of telescopic unblock moreover, the length that the telescopic unblock of withdrawal is equivalent to a flexible pipe, consequently, telescopic unblock is reverse pull rod and latch mechanism occupy is little, so released a large amount of spaces in the well front end of holding rod, because released a large amount of available spaces in the well front end of holding rod and striking pole, the space in this striking pole can install other accessories such as torch, torch injection subassembly. Thus, the unlocking lever arrangement of the present invention overcomes the technical prejudice of the prior forward arrangement of the unlocking lever. Moreover, the telescopic unlocking reverse pull rod is adopted, and is not easy to damage under the action of the limiting device, so that the service life of the spontoon is prolonged, and the maintenance cost is reduced. In addition, as shown in fig. 6, after the telescopic unlocking reverse pull rod is recovered, the telescopic unlocking reverse pull rod can be completely hidden in the unlocking rod, so that the recovered telescopic unlocking reverse pull rod does not need to occupy additional space, which is equivalent to that of the unlocking driving mechanism very close to the locking mechanism, and after the spontoon is recovered, the space in the holding rod is further released. Because the inner and outer abutting rings are arranged, when the reverse pulling force is applied, the adjacent telescopic pipes are not separated due to the deformation of the stretching pipes, and the stress of the telescopic unlocking reverse pull rod is more reliable. Because the inner limiting ring and the outer limiting ring are arranged, when the reverse pulling force is applied, the telescopic pipe is not separated from the locking rod due to the deformation of the telescopic pipe and the unlocking rod, and the stress of the structure is more reliable.

In the process of using the spontoon, the striking rod is required to be subjected to the processes of repeatedly discharging and collecting the spontoon, and the clamping device and the clamping groove are required to be clamped, so that when the clamping device is not clamped in the clamping groove, the clamping device is required to be rubbed with the inner wall of the holding rod, and a ball structure is adopted, so that sliding friction is changed into rolling friction, the friction force is small, the inner wall of the holding rod is not easy to damage, the influence on the strength of the spontoon is reduced, and the service life of the spontoon is prolonged.

As another structure, the novel multifunctional hammer is characterized by further comprising more than one secondary striking rod, one end of the secondary striking rod close to the striking rod is inserted into the striking rod, a primary clamping groove is formed in the inner wall of the front end of the striking rod, other secondary striking rods are sequentially inserted and connected, a locking mechanism is arranged at the rear end of the secondary striking rod, secondary clamping grooves are formed in the inner walls of the front ends of the other secondary striking rods except for the foremost secondary striking rod, and a telescopic unlocking reverse pull rod is connected between the adjacent locking mechanisms. The structure is used if needed, the secondary striking rod is thrown out or pulled out, and when the locking mechanism moves to the secondary clamping groove along with the secondary striking rod, the clamping device is clamped in the secondary clamping groove. If the spontoon needs to be recovered, the pull force is given through the unlocking driving mechanism, and all telescopic unlocking counter pull rods can generate reverse pull force to promote the clamping device to be separated from the clamping groove and the secondary clamping groove so as to retract the striking rod and the secondary striking rod. The structure can realize the retraction of the secondary striking rod by using the same unlocking mechanism, so that the service length of the spontoon can be prolonged, and the retraction is convenient and quick.

Example 2.

As shown in fig. 14 to 18, the telescopic baton includes a grip lever 1, a striking lever 2, an unlocking driving mechanism 3, a locking mechanism 4 and a telescopic unlocking counter pull lever 5. The rear end of the striking rod 2 is inserted into the holding rod 1.

In the present invention, referring to fig. 15, the left end in the view is the rear end, and the right end in the view is the front end.

As shown in fig. 14 to 18, a clip groove 11 is provided on the inner wall of the front end of the grip 1, an annular groove 12 is provided on the inner wall of the grip in front of the clip groove 11, an elastic ring 110 is provided in the annular groove 12, and an internal thread is provided on the inner wall of the rear end of the grip 1.

The driving plate 32 is disposed in the accommodating chamber 313.

As shown in fig. 19 to 21, the lock mechanism 4 includes a card holder 41, an unlocking lever 42, an elastic member 43, and a catching device 45 that can be caught in the card slot.

The holder 41 includes a holder rear end 411 and a holder front end 412, and an external thread is provided on the holder front end 412, and the holder 41 is connected to the rear end of the striking rod 2 by being connected to the internal thread of the striking rod rear end. The clamping seat 41 is provided with an axially extending through hole 413, a countersunk hole 414 coaxial with the through hole 413 is arranged at the front end of the clamping seat, a radially extending sliding groove cavity 400 communicated with the through hole is arranged on the clamping seat 41, and the clamping device 45 is an elastic clamping ring.

The elastic snap ring comprises two snap rings 401 which are oppositely arranged relative to the center of the clamping seat and a reset spring 402 which is arranged between the two snap rings. The snap ring 401 includes snap ring body 4011, establish the card portion 4012 of putting in snap ring body 4011 outside and set up the unblock ear 4013 in snap ring body inboard, and the thickness of card portion 4012 is less than the thickness of snap ring body 4011, and the unblock ear on two snap rings misplaces in the fore-and-aft direction, and unblock ear on two snap rings has the position of overlapping, is equipped with unlocking hole 40131 on unblock ear 4013, and the unlocking hole is waist type hole, and the unlocking hole on two unblock ears has the position of overlapping that link up each other. A snap ring 401 is slidably arranged in the sliding groove cavity.

The unlocking lever 42 passes through the through hole and the unlocking hole. The unlocking lever includes a large end 426 and a small end 427, the small end 427 being connected to the rear end of the large end 426. The unlocking lever 42 has a hollow structure, and a stopper 423 is provided at the front end of the lever 421. The elastic piece is a spring, the elastic piece 43 is sleeved on the unlocking rod positioned on the supporting block 423 and the countersunk hole, and the countersunk hole can limit the spring.

An annular groove 416 is provided on the rear outer wall of the cartridge and an elastomeric ring 46 is provided in the annular groove. Generally, as shown in fig. 16, an annular groove 12 is provided on the inner wall of the front end of the grip 1 located in the clamping groove, and an elastic ring 110 is provided in the annular groove 12, and an elastic ring is also provided on the clamping seat 41, so that when the striking rod 2 extends out, the elastic rings are provided at both ends of the clamping groove, the elastic rings can reduce the gap between the grip and the striking rod, and the stress between the grip and the striking rod is uniform due to the two elastic rings, so that the striking rod is not easy to shake relative to the grip.

As shown in fig. 21, an inner stopper 424 is provided on the inner wall of the rear end of the unlocking lever.

As shown in fig. 16, a clamping groove 91 is formed in the inner wall of the striking rod, a clamping ring 92 is clamped in the clamping groove 91, a jacking block 93 connected with or jacked by the clamping ring is arranged in the striking tube, the jacking block 93 is used for limiting the front end of the unlocking rod, the unlocking rod is prevented from being separated from the clamping seat, and the reliability of use is improved. Of course, the unlocking rod can be limited by arranging a limiting device between the clamping seat and the unlocking rod, if an outer flange is arranged at the rear end of the unlocking rod, the outer flange is blocked by the clamping seat, and the unlocking rod can be installed only by the structure that the blocking block and the unlocking rod are connected through threads.

As shown in fig. 14, 16, 17 and 13, the telescopic unlocking reverse pull rod 5 comprises more than two sections of telescopic tubes 51, adjacent telescopic tubes are connected in a sliding manner, and the diameters of the telescopic tubes in the telescopic unlocking reverse pull rod are sequentially reduced from the front end to the rear end; a limiting device is arranged between the adjacent telescopic pipes, the limiting device comprises an inner abutting ring 512 arranged on one end of the inner wall of one telescopic pipe and an outer abutting ring 511 arranged on the outer wall of one end of the adjacent telescopic pipe, and the outer abutting ring in the same limiting device is positioned in front of the inner abutting ring. An outer limiting ring 50 is arranged on the outer wall of one end, which is close to the unlocking rod, of the telescopic pipe extending into the unlocking rod, the outer limiting ring 50 is positioned in front of the inner limiting ring 424, and the telescopic pipe close to the unlocking rod is inserted into the unlocking rod in a sliding mode. The telescopic pipe far away from one end of the unlocking rod is connected to the middle part of the third connecting rod through threads, and other telescopic pipes except the telescopic pipe connected with the third connecting rod can be solid or hollow and are of hollow structures.

According to the structure, on the premise that the reverse tension force of the unlocking rod is not given, the unlocking rod cannot move backwards under the action of the spring, when the striking rod is in a retracted state, the elastic snap ring corresponds to the position of the small end part in the radial direction, the unlocking rod does not have acting force on the elastic snap ring, if a spontoon is needed to be used, the striking rod is thrown out or pulled out forwards, when the elastic snap ring moves to the clamping groove position, the outer end of the elastic snap ring is clamped into the clamping groove under the action of the elastic force of the elastic snap ring, if the striking rod is needed to be recovered, the unlocking rod is given a reverse tension force by the unlocking driving mechanism and the telescopic unlocking reverse pull rod, the elastic snap ring is retracted and separated from the clamping groove under the action of the large end part, and accordingly the striking rod is retracted. The operating principle of the unlocking driving mechanism is as follows: under the action of the reset spring, the driving plate is always subjected to backward force, when the driving plate is given a forward force, the driving plate overcomes the elastic force of the reset spring to move forwards, and the driving plate drives the first connecting rod and the second connecting rod to swing, so that the third connecting rod is driven to move backwards in parallel, and reverse pulling force is provided. In this structure, owing to set up waist type groove, consequently, then can drive third connecting rod rectilinear movement when first connecting rod and second connecting rod swing, this structure does not adopt the pendulum rod structure, lets the middle part that the reverse pull rod of telescopic unblock is connected to the third connecting rod, lets the atress of the reverse pull rod of telescopic unblock even. In the retracting process of the striking rod, the telescopic tube is retracted into the adjacent telescopic tube, and the telescopic tube connected with the unlocking rod is retracted into the unlocking tube. In this structure, through reverse installation unlocking lever to utilize the pulling force to realize the unblock, the unlocking lever only needs to set up at the rear end of striking pole and occupy the very little space of striking pole rear end and can realize the recovery of striking pole, after striking pole is retrieved, latch mechanism is located the rear end of holding rod, and telescopic unblock is by the withdrawal to the reverse pull rod of telescopic unblock moreover, the length that the telescopic unblock of withdrawal is equivalent to a flexible pipe, consequently, telescopic unblock is reverse pull rod and latch mechanism occupy is little, so released a large amount of spaces in the well front end of holding rod, because released a large amount of available spaces in the well front end of holding rod and striking pole, the space in this striking pole can install other accessories such as torch, torch injection subassembly. Thus, the unlocking lever arrangement of the present invention overcomes the technical prejudice of the prior forward arrangement of the unlocking lever. Moreover, the telescopic unlocking reverse pull rod is adopted, and is not easy to damage under the action of the limiting device, so that the service life of the spontoon is prolonged, and the maintenance cost is reduced. In addition, after the telescopic unlocking reverse pull rod is recovered, the telescopic unlocking reverse pull rod can be completely hidden in the unlocking rod, so that the recovered telescopic unlocking reverse pull rod does not need to occupy additional space, which is equivalent to the situation that the unlocking driving mechanism is very close to the locking mechanism, and after the spontoon is recovered, the space in the holding rod is further released. Because the inner and outer abutting rings are arranged, when the reverse pulling force is applied, the adjacent telescopic pipes are not separated due to the deformation of the stretching pipes, and the stress of the telescopic unlocking reverse pull rod is more reliable. Because the inner limiting ring and the outer limiting ring are arranged, when the reverse pulling force is applied, the telescopic pipe is not separated from the locking rod due to the deformation of the telescopic pipe and the unlocking rod, and the stress of the structure is more reliable.

Claims

1. A telescopic reverse-pulling concealed unlocking mechanism is characterized in that: comprises an unlocking driving mechanism, a locking mechanism and a telescopic unlocking reverse pull rod; a telescopic unlocking counter pull rod is arranged between the unlocking driving mechanism and the locking mechanism;

the telescopic unlocking reverse pull rod comprises more than two sections of telescopic pipes, wherein adjacent telescopic pipes are connected in a sliding manner, a limiting device is arranged between the adjacent telescopic pipes, the telescopic pipe close to the unlocking rod is connected to one end of the unlocking rod, and the telescopic pipe far away from one end of the unlocking rod is connected to the unlocking driving mechanism;

more than one circumferentially-distributed ball holes which are communicated with the through holes and extend radially are arranged on the clamping seat, and the clamping device is a ball arranged in the ball holes; the unlocking rod comprises a rod body and an unlocking section connected to the rear end of the rod body, the outer diameter of the rod body is smaller than that of the unlocking section, and a telescopic pipe close to the unlocking rod is connected to the unlocking section;

The clamping seat is provided with a sliding groove cavity which extends radially and is communicated with the through hole, the clamping device is an elastic clamping ring, the elastic clamping ring penetrates through the sliding groove cavity, the unlocking rod comprises a large end part and a small end part, the small end part is connected to the rear end of the large end part, and the telescopic tube close to the unlocking rod is connected to the small end part.

2. The telescopic counter-pulling concealed unlocking mechanism according to claim 1, wherein: the front end of the unlocking rod is provided with a blocking block, and the elastic piece is sleeved on the unlocking rod positioned on the blocking block and the clamping seat; an annular groove is arranged on the outer wall of the rear end of the clamping seat, and an elastic ring is arranged in the annular groove.

3. The telescopic counter-pulling concealed unlocking mechanism according to claim 1, wherein: a chamfer is arranged between the rod body and the unlocking section.

4. The telescopic counter-pulling concealed unlocking mechanism according to claim 1, wherein: a connecting part is arranged between the large end part and the small end part, and the connecting part is in a truncated cone shape.

5. The telescopic counter-pulling concealed unlocking mechanism according to claim 1, wherein: the diameter of the telescopic pipe in the telescopic unlocking reverse pull rod is sequentially reduced from the front end to the rear end; the limiting device comprises an inner abutting ring arranged at one end of the inner wall of one telescopic pipe and an outer abutting ring arranged on the outer wall of one end of the adjacent telescopic pipe, and the outer abutting ring in the same limiting device is positioned in front of the inner abutting ring; an inner limiting ring is arranged on the inner wall of the rear end of the unlocking rod, an outer limiting ring is arranged on the outer wall of one end, which is close to the unlocking rod, of the telescopic pipe extending into the unlocking rod, the outer limiting ring is positioned in front of the inner limiting ring, and the telescopic pipe close to the unlocking rod is inserted into the unlocking rod in a sliding mode.

6. The telescopic counter-pulling concealed unlocking mechanism according to claim 1, wherein: the base is provided with a containing cavity extending forwards from the rear end to the middle part, and the front end of the base is provided with a cavity extending backwards to the containing cavity; the driving plate is arranged in the accommodating cavity; the connecting rod mechanism comprises a first connecting rod, a second connecting rod and a third connecting rod, wherein the middle part of the first connecting rod is hinged on a base positioned at one side in the cavity, the middle part of the second connecting rod is hinged on a base positioned at one side opposite to the first connecting rod, waist-shaped grooves are formed in two ends of the third connecting rod, the third connecting rod is positioned between the first connecting rod and the second connecting rod, a first sliding pin penetrates through the waist-shaped grooves in one end of the first connecting rod, the rear end of the first connecting rod is positioned in front of the driving plate, a second sliding pin penetrates through the waist-shaped grooves in the other end of the second connecting rod, and the rear end of the second connecting rod is positioned in front of the driving plate; the reset mechanism comprises a pull rod and a reset spring, the pull rod penetrates through the base and is connected to the driving plate, and the reset spring is sleeved on the pull rod between the base and the driving plate; the telescopic unlocking counter pull rod is connected to the middle of the third connecting rod.

7. An unlocking method of a telescopic reverse-pulling concealed unlocking mechanism is characterized by comprising the following steps of:

the telescopic reverse-pulling concealed unlocking mechanism comprises an unlocking driving mechanism, a locking mechanism and a telescopic unlocking reverse-pulling rod; a telescopic unlocking counter pull rod is arranged between the unlocking driving mechanism and the locking mechanism;

the unlocking method of the telescopic reverse-pulling concealed unlocking mechanism comprises the following steps: the driving plate is pressed, the driving plate drives the connecting rod mechanism to overcome the force of the reset mechanism to give a pulling force to the telescopic unlocking reverse pull rod, the telescopic unlocking reverse pull rod drives the unlocking rod to overcome the elastic force of the elastic piece to move backwards, and the outer end of the clamping device is driven to move inwards through the unlocking rod, so that unlocking is realized.

8. The unlocking method of the telescopic reverse-pulling concealed unlocking mechanism according to claim 7, wherein the unlocking method comprises the following steps: the diameter of the telescopic pipe in the telescopic unlocking reverse pull rod is sequentially reduced from the front end to the rear end; the limiting device comprises an inner abutting ring arranged at one end of the inner wall of one telescopic pipe and an outer abutting ring arranged on the outer wall of one end of the adjacent telescopic pipe, and the outer abutting ring in the same limiting device is positioned in front of the inner abutting ring; an inner limiting ring is arranged on the inner wall of the rear end of the unlocking rod, an outer limiting ring is arranged on the outer wall of one end, which is close to the unlocking rod, of the telescopic pipe extending into the unlocking rod, the outer limiting ring is positioned in front of the inner limiting ring, and the telescopic pipe close to the unlocking rod is inserted into the unlocking rod in a sliding manner; after the telescopic unlocking reverse pull rod is retracted, the telescopic unlocking reverse pull rod is hidden in the unlocking rod.