CN217440437U - Short-distance self-locking structure - Google Patents

Abstract

The invention discloses a short-distance self-locking structure which comprises a base shell, a sliding frame and an upper cover, wherein a limiting frame is integrally connected in the base shell, the sliding frame slides along the height direction of the limiting frame, a positioning assembly used for limiting the sliding of the sliding frame is arranged in the base shell, the positioning assembly comprises a positioning rod with one end rotatably connected with the base shell and a sliding rod in sliding connection with the sliding frame, the positioning rod is fixedly connected with the sliding rod, a track for the sliding rod to slide is formed in the sliding frame, a start slot and a limited sliding slot for limiting the sliding rod to slide are formed in the track, the positioning assembly further comprises a pressing piece, and the sliding rod is pressed by the pressing piece, so that one end, located in the track, of the sliding rod is tightly attached to the track. The invention has the effect that the self-locking device can maintain better self-locking while reducing the volume.

Description

Short-distance self-locking structure

Technical Field

The invention relates to the field of self-locking devices, in particular to a short-distance self-locking structure.

Background

Self-locking, i.e. the assembly is automatically locked for a short distance or a long distance due to the occurrence of a certain action, so that the locked distance can be unlocked and changed again under the action of a specific action.

In short distance self-locking function, the main subassembly that commonly uses has clockwork spring, stay cord, self-locking nut etc. but when some less article are inside to set up short distance self-locking function, the space that these subassemblies need occupy is bigger for article volume increase after these subassemblies have been installed, and if the proportion of corresponding article is corresponding with above-mentioned self-locking structure with proportional minification to a certain degree, then the insecure condition of auto-lock appears easily, consequently, need to improve urgently.

Disclosure of Invention

In order to enable the self-locking structure to be firmly locked while reducing the volume, the invention provides a short-distance self-locking structure.

The short-distance self-locking structure provided by the invention adopts the following technical scheme:

the utility model provides a short distance is from locking structure, includes base shell, sliding frame and upper cover, an organic whole is connected with the restriction frame in the base shell, the sliding frame is followed the direction of height of restriction frame slides, be equipped with in the base shell and be used for restricting the gliding locating component of sliding frame, locating component include one end and base shell rotate the locating lever of being connected and with sliding frame sliding connection's slide bar, the locating lever with slide bar fixed connection, it supplies the gliding track of slide bar to open in the sliding frame, it has the first dead slot and the limited sliding groove that are used for restricting the gliding of slide bar to open on the track, locating component still compresses tightly the piece, compress tightly the slide bar, make the one end that the slide bar is located the track pastes tight track.

Through adopting above-mentioned technical scheme, slide bar one end is located the initial position inslot at first, follow the direction of height removal slide frame of restriction frame earlier, make the slide bar slide in the track and slide to the restriction spout in, the distance on the direction of height of restriction frame between restriction spout and the initial position groove is the gliding distance of slide frame, when slide bar slide limit spout in, under the condition of not additionally exerting force, the slide bar is difficult to roll out the restriction spout, thereby lock the slide frame, and the auto-lock ware itself only has the pole, board and orbital structure, can carry out the adjustment of volume according to the machine needs, consequently when installing the auto-lock ware in less machine, the volume of auto-lock ware can reduce as far as possible and guarantee that the auto-lock ware firmly locks. When the sliding frame needs to be slid back to the original position, the sliding frame is moved again to enable the sliding rod to be separated from the sliding limiting groove and slide along the rail again, and the sliding frame slides back to the original position.

Preferably, the track includes first slide piece, second slide piece, third slide piece and fourth slide piece, first slide piece second slide piece third slide piece with fourth slide piece connects gradually, first slide piece top with fourth slide piece end links to each other, the terminal thickness of first slide piece is greater than thereby the top thickness of second slide piece is the echelonment, second slide piece with between the third slide piece, third slide piece and fourth slide piece are the echelonment with first slide piece equally.

By adopting the technical scheme, the sliding rod can slide to the second slide block from the first slide block and then can not slide back to the first slide block due to the stepped arrangement, so that the sliding rod can only slide along the track direction and can not move backwards, and the sliding stability of the sliding rod along the track can be improved.

Preferably, the positioning assembly further comprises a pre-pressing elastic part for pushing the sliding frame to the initial position groove, the pre-pressing elastic part is provided with a pre-pressing spring, and two ends of the pre-pressing spring are respectively connected with the limiting frame and the sliding frame.

Through adopting above-mentioned technical scheme, pre-compaction spring occupies the volume less, when setting up pre-compaction elastic component, can reduce to increase the condition that extra space is used for setting up pre-compaction elastic component.

Preferably, the pressing piece comprises an upper pressing strip and a lower pressing strip, the upper pressing strip presses one end, close to the sliding rod, of the middle rod, and the lower pressing strip presses one end, close to the positioning rod, of the middle rod.

Through adopting above-mentioned technical scheme for locating lever and slide bar are difficult for and restriction frame and slide frame separation, make slide bar one end paste the track tightly all the time and slide in the track, are favorable to reducing the condition of slide bar and track separation, consequently are favorable to improving the locking degree of auto-lock.

Preferably, the upper cover penetrates through the material reducing hole, a supporting plate is fixedly connected in the material reducing hole, and the supporting plate is fixedly connected with the upper pressing strip.

Through adopting above-mentioned technical scheme, be favorable to reducing the processing material of upper cover, simultaneously, when the slide bar has the trend of outside motion, the trend of outside motion takes place for the upper press strip, reduces the material hole set up the area of being connected between backup pad and the upper cover that has reduced for the backup pad can have the space of taking place deformation, reduces the condition of backup pad rupture.

Preferably, the bottom of the limiting frame is provided with a jack for the insertion of the bottom wall of the upper cover.

Through adopting above-mentioned technical scheme for upper cover and base shell are fixed a position the installation more easily.

Preferably, the limiting frame is provided with a clamping groove in the periphery, and the inner peripheral wall of the upper cover is provided with a clamping block.

Through adopting above-mentioned technical scheme, peg graft the upper cover in the restriction frame periphery back, the fixture block joint is in the draw-in groove for the upper cover is installed outside the restriction frame.

Preferably, the upper cover is provided with a visual hole in a penetrating way, and when the upper cover is inserted into the insertion hole, the visual hole and the periphery of the limiting frame are provided with a gap facing the position of the fixture block.

Through adopting above-mentioned technical scheme, when the upper cover is pegged graft in the restriction frame periphery, the adjustable fixture block in gap of pressing from both sides between visual hole and the restriction frame, if the fixture block is difficult to peg graft to the draw-in groove in, the accessible gap pushes away the fixture block to the draw-in groove.

In summary, the invention includes at least one of the following beneficial technical effects:

1. one end of the sliding rod is initially positioned in the start position groove, the sliding groove is firstly moved along the height direction of the limiting frame, so that the sliding rod slides in the track and slides into the limiting sliding groove, the distance between the limiting sliding groove and the start position groove along the height direction of the limiting frame is the sliding distance of the sliding frame, when the sliding rod slides in the limiting sliding groove, the sliding rod is difficult to slide out of the limiting sliding groove under the condition of not additionally applying force, so that the sliding frame is locked, and the self-locking device only has the structures of the rod, the plate and the track and can adjust the volume according to the requirement of a machine, so that when the self-locking device is installed in a smaller machine, the volume of the self-locking device can be reduced as much as possible and the self-locking device is ensured to be locked firmly;

2. the stepped arrangement ensures that the sliding rod does not slide back to the first slide way block after sliding from the first slide way block to the second slide way block, so that the sliding rod can only slide along the track direction and does not move backwards, and the stability of the sliding rod in sliding along the track is favorably improved;

3. the setting of upper pressing strip and lower pressing strip for locating lever and slide bar be difficult for with restriction frame and sliding frame separation, make slide bar one end paste the track all the time and slide in the track, be favorable to reducing the condition of slide bar and track separation, consequently be favorable to improving the locking degree of auto-lock.

Drawings

FIG. 1 is a schematic view of the overall structure of a short-range self-locking structure of the present application;

FIG. 2 is a schematic structural view for illustrating the internal structure of the base housing;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

fig. 4 is a schematic view for illustrating a structure of the inside of the upper cover.

Description of reference numerals: 1. a base shell; 2. an upper cover; 3. a limit frame; 4. a sliding frame; 5. a base plate; 6. a back plate; 7. prepressing the elastic part; 8. a first guide post; 9. a guide hole; 10. a second guide post; 11. positioning a rod; 12. an intermediate lever; 13. a slide bar; 14. a yielding groove; 15. rotating the hole; 16. a self-locking frame; 17. a first limiting block; 18. a second limiting block; 19. a start position groove; 20. a first slide block; 21. a second slide block; 22. a third slide way block; 23. a fourth slide block; 24. a limit chute; 25. a track; 26. a material reducing hole; 27. a support plate; 28. connecting blocks; 29. pressing strips; 30. pressing a strip; 31. a jack; 32. a clamping block; 33. a card slot; 34. a visual aperture; 35. an output aperture; 36. a layer of holes; 37. two layers of holes; 38. an operating lever; 39. and a through hole.

Detailed Description

The present invention is described in further detail below with reference to fig. 1-4.

The embodiment of the invention discloses a short-distance self-locking structure. Referring to fig. 1, a short distance is from locking structure includes base shell 1 and upper cover 2, is equipped with restriction frame 3 in the base shell 1, and sliding frame 4 sliding connection has in restriction frame 3, is equipped with the locating component that can slide sliding frame 4 auto-lock in the position of certain distance that slides down in base shell 1.

Referring to fig. 1 and 2, the base housing 1 includes a bottom plate 5 and a back plate 6 integrally connected to the bottom plate 5, the back plate 6 is perpendicular to the bottom plate 5, one side of the back plate 6 in a thickness direction is flush with one side of the bottom plate 5 in a width direction, the limiting frame 3 is a square frame, and the thickness direction of the limiting frame 3 is consistent with the thickness direction of the back plate 6. The opening of one side of the limiting frame 3 is integrally connected with the back plate 6.

Referring to fig. 2 and 3, the inner side wall of the regulating frame 3 in the width direction is in contact with the outer side wall of the slide frame 4 in the width direction, so that the slide frame 4 can slide only in the height direction of the regulating frame 3.

Referring to fig. 2 and 3, the positioning assembly includes a pre-pressed elastic member 7 disposed in the limiting frame 3, in this embodiment, the pre-pressed elastic member 7 is a pre-pressed spring, the bottom wall of the limiting frame 3 is integrally connected with a first guide post 8, the bottom end of the pre-pressed spring is wound around the periphery of the first guide post 8, the bottom wall of the sliding frame 4 is recessed with a guide hole 9, the guide hole 9 is a square hole, the pre-pressed spring is perpendicular to the bottom wall of the limiting frame 3 and extends into the guide hole 9, the bottom wall of the guide hole 9 is integrally connected with a second guide post 10, and the upper end of the pre-pressed spring is wound around the periphery of the second guide post 10; the pre-pressing spring is always in a compressed state, and supports the sliding frame 4, so that the top surface of the sliding frame 4 is abutted against the inner top wall of the limiting frame 3 under the condition that no external force is applied.

Referring to fig. 2 and 3, the positioning assembly includes a positioning rod 11, an intermediate rod 12, and a sliding rod 13, the positioning rod 11, the intermediate rod 12, and the sliding rod 13 are integrally connected in sequence, the positioning rod 11 and the sliding rod 13 are perpendicular to the intermediate rod 12, and the positioning rod 11 and the sliding rod 13 are located at two ends of the intermediate rod 12 along the length direction.

Referring to fig. 2, one side of the limiting frame 3, which is far away from the back plate 6, is provided with a yielding groove 14, the yielding groove 14 penetrates through the bottom wall of the limiting frame 3 along the height direction of the limiting frame 3, the inner wall of the yielding groove 14 along the thickness direction of the limiting frame 3 is provided with a rotating hole 15, the positioning rod 11 rotates in the rotating hole 15, and the rotating hole 15 is located right below the first guide post 8.

Referring to fig. 2 and 3, a part of the side wall of the intermediate lever 12 is attached to the inner wall of the relief groove 14 having the rotation hole 15. The positioning assembly comprises a self-locking frame 16 fixed in the sliding frame 4, a first limiting block 17 and a second limiting block 18 are fixedly connected in the self-locking frame 16, the peripheral wall of the outer periphery of the first limiting block 17 is the same as that of the second limiting block 18, the bottom wall of the first limiting block 17 protrudes to form a left convex surface and a right convex surface, the left convex surface and the right convex surface are connected to form a V shape, and two side surfaces of the first limiting block 17 are parallel to the side wall of the limiting frame 3 in the width direction.

Referring to fig. 2 and 3, a start groove 19 is recessed in the bottom wall of the self-locking frame 16, the start groove 19 is a V-shaped groove, the lowest points of the start groove 19, the first limiting block 17 and the second limiting block 18 are located on the same straight line parallel to the side wall of the limiting frame 3, a first slide block 20 is clamped between the left side wall of the start groove 19 and the left convex surface of the first limiting block 17, and a fourth slide block 23 is clamped between the right side wall of the start groove 19 and the right convex surface of the first slide block. The top end of the first limiting block 17 is recessed with a slide limiting groove 24 for limiting the sliding of the sliding rod 13, and the limiting groove enables the limiting block to be a V-shaped block. A second slideway block 21 is clamped between the left side surface of the sliding limiting groove 24 and the left convex surface of the second limiting block 18, and a third slideway block 22 is clamped between the right side surface of the sliding limiting groove 24 and the right convex surface of the second limiting block 18.

Referring to fig. 2 and 3, the first slide block 20, the second slide block 21, the third slide block 22, and the fourth slide block 23 are sequentially connected, and a start end of the first slide block 20 is connected to a tail end of the fourth slide block 23, thereby forming a rail 25 on which one end of the sliding rod 13, which is far from the intermediate rod 12, sequentially slides.

Referring to fig. 2 and 3, the wall of the end block of the first slide way block 20 smoothly transitions with the left side surface of the slide limiting groove 24, the first slide way block 20, the second slide way block 21, the third slide way block 22 and the fourth slide way block 23 are all special-shaped blocks gradually becoming thicker from the beginning to the end, and the thicknesses of the ends of the first slide way block 20, the second slide way block 21, the third slide way block 22 and the fourth slide way block 23 are equal. The end wall of the tail end of the second slide way block 21 is flush with the right convex surface of the second limiting block 18, a distance is reserved between the tail end of the second slide way block 21 and the bottom of the slide limiting groove 24 for stable insertion of the end part of the slide rod 13, and the end wall of the tail end of the third slide way block 22 and the right side wall of the first limiting block 17 are in smooth transition.

Referring to fig. 2 and 3, the positioning assembly further includes a pressing member pressing the sliding rod 13 such that an end of the sliding rod 13 remote from the intermediate lever 12 is always in close contact with the rail 25. Under the limitation of the positioning rod 11, the sliding rod 13 cannot move upwards, when the sliding frame 4 is pressed to enable the sliding frame 4 to slide downwards in the limiting frame 3, the sliding rod 13 slides into the second slide way block 21 from the first slide way block 20, the tail end of the first slide way block 20 and the starting end of the second slide way block 21 form a step, and under the action of the pressing piece, the sliding rod 13 cannot slide back to the first slide way block 20 from the second slide way block 21, so that the sliding rod 13 can only enter the second slide way block 21; after stopping the application of force to sliding frame 4, sliding frame 4 upwards slides in the effect of pre-compaction spring for slide bar 13 slides along second slide piece 21 and on unable last gliding back first slide piece 20, make slide bar 13 one end card in limit spout 24, make sliding frame 4 locked and unable continuation rebound, thereby accomplish the auto-lock after sliding frame 4 short distance slides. When the force is applied downward again to the slide frame 4, the slide rod 13 is slid onto the fourth slide block 23 along the third slide block 22 and slid back to the bottom end of the home groove 19, so that the slide frame 4 is slid upward and back to the home position, so that the slide rod 13 cannot slide against the rail 25.

Referring to fig. 2 and 4, the upper cover 2 is a square cover, a material reducing hole 26 penetrates through the bottom wall of the upper cover 2 along the thickness direction, the material reducing hole 26 is a square hole, a supporting plate 27 is integrally connected to the lower bottom wall of the material reducing hole 26, the supporting plate 27 is perpendicular to the lower bottom wall of the material reducing hole 26, a connecting block 28 is integrally connected to the top end of the supporting plate 27, and the connecting block 28 is a square block with the same width as the supporting plate 27. The connecting piece 28 is flush on one side with the outside of the support plate 27. The pressing piece comprises an upper pressing strip 29 fixed on the side wall of the connecting block 28 and a lower pressing strip 30 fixed on the inner side wall of the upper cover 2, the length directions of the upper pressing strip 29 and the lower pressing strip 30 are parallel to the bottom plate 5, the upper pressing strip 29 is a semicircular column strip, and the lower pressing strip 30 is a rectangular strip. The bottom edge of the upper pressing strip 29 is flush with the bottommost end of the sliding rod 13, the top wall of the lower pressing strip 30 is flush with the top end of the positioning rod 11, when the upper cover 2 covers the base shell 1, the upper pressing strip 29 compresses the sliding rod 13, the lower pressing strip 30 compresses the positioning rod 11, and the sliding rod 13 needs to slide on the left side and the right side, so that the side face of the upper pressing strip 29 is set to be a cylindrical surface, the contact area between the upper pressing strip 29 and the sliding rod 13 is reduced, and the reduction of friction force received when the sliding rod 13 slides is facilitated.

Referring to fig. 2 and 4, the bottom wall of the base shell 1 penetrates through the insertion hole 31 for inserting the bottom wall of the upper cover 2, the inner top wall and the inner bottom wall of the upper cover 2 are respectively provided with three clamping blocks 32, one clamping block 32 is located on the inner top wall of the upper cover 2, and the other two clamping blocks 32 are respectively located at two ends of the inner bottom wall of the upper cover 2 along the length direction. Jack 31 is sunken to have along the pore wall of 3 direction of height of restriction frame and 3 roof of restriction frame and supplies 2 roof all sunken draw-in grooves 33 that have the fixture block 32 joint of supplying 2 diapalls of upper cover for upper cover 2 is difficult for basic shell 1 to separate.

Referring to fig. 2 and 4, the cover wall of the upper cover 2 along the width direction is penetrated by two visual holes 34, the two visual holes 34 are arranged corresponding to the two fixture blocks 32 on the inner bottom wall of the upper cover 2, the visual holes 34 are square holes, the bottom wall of the visual holes 34 is lower than the hole wall of the insertion hole 31 along the height direction of the limiting frame 3, when the fixture blocks 32 are difficult to slide into the clamping grooves 33, a tool can be used for extending into the gap between the bottom wall of the visual holes 34 and the hole wall of the insertion hole 31 along the height direction of the limiting frame 3 and pushing the fixture blocks 32, so that the fixture blocks 32 are inserted into the clamping grooves 33.

Referring to fig. 1, the side wall of the upper cover 2 is provided with an output hole 35, the output hole 35 is positioned at one end of the upper cover 2 close to the top, the side wall of the limiting frame 3 opposite to the output hole 35 is provided with a layer of holes 36, the layer of holes 36 are equal to the output hole 35 in height, the sliding frame 4 is provided with a layer of holes 37, the height of the layer of holes 37 is half of that of the layer of holes 36, and the top ends of the layer of holes 36 and the layer of holes 37 are flush with the top end of the sliding frame 4.

Referring to fig. 1 and 2, an operating rod 38 is integrally connected to the top end of the sliding frame 4, the operating rod 38 penetrates through the top of the limiting frame 3, a through hole 39 is formed in the top of the upper cover 2 and used for allowing the operating rod 38 to extend out, in this embodiment, the operating rod 38 serves as a power input rod for sliding of the sliding frame 4, the sliding frame 4 can be driven to slide downwards by pressing the operating rod 38, a linkage rod is fixedly connected to the side wall of the sliding frame 4 and extends out of the layer of hole 36 and the output hole 35, and when the operating rod 38 is pressed, the sliding frame 4 drives the linkage rod to move. In other embodiments, the operating rod 38 and the linkage rod may be reversed to serve as the output rod and the input rod, respectively.

The implementation principle of the short-distance self-locking structure provided by the embodiment of the invention is as follows: when a certain distance needs to be locked, the operating rod 38 is pressed, the sliding frame 4 slides downwards, one end of the sliding rod 13 slides to the top end of the second sliding rail block 21 along the first sliding rail block 20, the operating rod 38 is released, the sliding frame 4 slides upwards due to no pressure, one end of the sliding rod 13 slides to the third sliding rail block 22 located on the limiting sliding groove 24 along the upper surface of the second sliding rail block 21, the sliding rod 13, the positioning rod 11 and the middle rod 12 are not deformed, the sliding frame 4 is pulled by the cooperation of the sliding block and the rotating block, the sliding frame 4 is limited to continuously slide downwards, the sliding frame 4 is locked after sliding for a certain distance, and self-locking of the short-distance self-locking structure occurs. And pressing the operating rod 38 again to drive the sliding frame 4 to slide downwards, sliding the opposite sliding rod 13 upwards along the upper surface of the third slide block 22, releasing the operating rod 38, and restoring the deformation of the pre-pressing elastic piece 7 to push the sliding frame 4 to slide upwards, so that the sliding rod 13 slides onto the fourth slide block 23 and slides back to the initial slot 19 along the fourth slide block 23.

The above are the preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: equivalent changes made according to the structure, shape and principle of the invention shall be covered by the protection scope of the invention.

Claims (8)

1. A short distance is from locking structure which characterized in that: a base shell (1), a sliding frame (4) and an upper cover (2), wherein a limiting frame (3) is integrally connected in the base shell (1), the sliding frame (4) slides along the height direction of the limiting frame (3), a positioning component for limiting the sliding of the sliding frame (4) is arranged in the base shell (1), the positioning component comprises a positioning rod (11) with one end rotationally connected with the base shell (1) and a sliding rod (13) slidably connected with the sliding frame (4), the positioning rod (11) is fixedly connected with the sliding rod (13), a track (25) for the sliding rod (13) to slide is arranged in the sliding frame (4), the track (25) is provided with a start groove (19) and a limited sliding groove (24) for limiting the sliding of the sliding rod (13), the positioning assembly further comprises a pressing piece, and the pressing piece presses the sliding rod (13) so that one end, located in the track (25), of the sliding rod (13) abuts against the track (25).

2. The short distance self-locking structure of claim 1, wherein: the track (25) comprises a first slide way block (20), a second slide way block (21), a third slide way block (22) and a fourth slide way block (23), the first slide way block (20), the second slide way block (21), the third slide way block (22) and the fourth slide way block (23) are sequentially connected, the starting end of the first slide way block (20) is connected with the tail end of the fourth slide way block (23), the thickness of the tail end of the first slide way block (20) is larger than that of the starting end of the second slide way block (21) so as to be in a step shape, and the second slide way block (21) is arranged between the third slide way block (22), the third slide way block (22) is arranged between the fourth slide way block (23) and the first slide way block (20) in a step shape.

3. The short distance self-locking structure of claim 1, wherein: the positioning assembly further comprises a pre-pressing elastic part (7) which pushes the sliding frame (4) to the initial groove (19), the pre-pressing elastic part (7) is provided with a pre-pressing spring, and two ends of the pre-pressing spring are respectively connected with the limiting frame (3) and the sliding frame (4).

4. The short distance self-locking structure of claim 1, wherein: the pressing piece comprises an upper pressing strip (29) and a lower pressing strip (30), the upper pressing strip (29) presses one end, close to the sliding rod (13), of the middle rod (12), and the lower pressing strip (30) presses one end, close to the positioning rod (11), of the middle rod (12).

5. The short range self-locking structure of claim 4, wherein: the upper cover (2) penetrates through the material reducing hole (26), a supporting plate (27) is fixedly connected in the material reducing hole (26), and the supporting plate (27) is fixedly connected with the upper pressing strip (29).

6. The short distance self-locking structure of claim 1, wherein: the bottom of the limiting frame (3) is provided with an insertion hole (31) for the insertion of the bottom wall of the upper cover (2).

7. The short distance self-locking structure of claim 6, wherein: the limiting frame (3) is provided with a clamping groove (33) in the periphery, and a clamping block (32) is arranged on the inner peripheral wall of the upper cover (2).

8. The short range self-locking structure of claim 7, wherein: the upper cover (2) penetrates through a visible hole (34), and when the upper cover (2) is inserted into the insertion hole (31), a gap which is opposite to the part of the clamping block (32) is formed between the visible hole (34) and the periphery of the limiting frame (3).

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