CN220504071U

CN220504071U - Bouncing core

Info

Publication number: CN220504071U
Application number: CN202321493586.0U
Authority: CN
Inventors: 李军
Original assignee: Taizhou Jike Industrial Design Co ltd
Current assignee: Taizhou Jike Industrial Design Co ltd
Priority date: 2023-06-12
Filing date: 2023-06-12
Publication date: 2024-02-20
Anticipated expiration: 2033-06-12

Abstract

The utility model belongs to the technical field of launching devices, and particularly relates to a bouncing core, which comprises a shell, a fixed buckle, a movable core and a drag hook, wherein the fixed buckle is detachably connected to the lower end of the shell, the lower end of the movable core is slidably arranged in the shell, a track groove is formed in the movable core, and the upper end of the drag hook is slidably arranged in the track groove, and the lower end of the drag hook hooks the fixed buckle. The utility model has simple and convenient installation and can be assembled by using automatic equipment.

Description

Bouncing core

Technical field:

the utility model belongs to the technical field of launching devices, and particularly relates to a bouncing core.

The background technology is as follows:

chinese patent No. CN113047384a discloses a bouncing core, which comprises a bouncing shell, a bouncing inner core, a restoring spring, a bouncing hook and a fixing ring, wherein the bouncing shell has a through structure at two ends, the bouncing inner core is inserted and sleeved in the bouncing shell, the top of the bouncing inner core is provided with a threaded part, and the threaded part can be screwed with a gland so as to press. The lower end of the bouncing inner core is provided with a heart-shaped bouncing guide groove, the lower part of the bouncing outer shell is extended with a positioning convex column, the positioning convex column is provided with a positioning hole, one end of the bouncing hook is clamped in the positioning hole, and the other end of the bouncing hook is clamped in the heart-shaped bouncing guide groove; one end of the return spring is abutted against the bouncing inner core, and the other end of the return spring is abutted against the bouncing outer shell; when the spring inner core is pressed downwards, the spring hook moves upwards at the bottom of the heart-shaped spring guide groove, and after a certain distance is reached, the spring hook is clamped at the concave part of the top end of the heart-shaped spring guide groove; when the heart-shaped bouncing guide groove is pressed down again, the bouncing hook slides out from the other side of the heart-shaped bouncing guide groove and moves downwards along the track under the action of the restoring spring, and when the bottom end of the heart-shaped bouncing guide groove is reached, the bouncing hook is clamped; compared with the existing tooth-buckling structure, the structure is smoother and more convenient to use, and the service life is longer. The retainer plate plug bush is in the outside of location projection and its and spring hook locking cooperation, and the retainer plate has certain elasticity, and it can be with the firm locking of spring hook in the locating hole of location projection to prevent to take place not hard up phenomenon. The outer side surface of the bouncing inner core is provided with the sliding groove, the bouncing outer shell is provided with the screw hole, the screw hole is internally connected with the bolt in a screwed mode, the end portion of the bolt is positioned in the sliding groove, and the bouncing inner core can only carry out longitudinal up-down displacement through positioning of the bolt and cannot rotate transversely, so that the use stability is effectively guaranteed. The lower part of the bouncing shell is provided with the screw thread with adjustable height, the screw thread can adjust the installation height position of the bouncing shell, and the convenience of use is improved.

The installation process of the bouncing movement comprises the following steps: during installation, the bouncing inner core and the restoring spring are firstly arranged in the bouncing outer shell, one end of the bouncing hook extends into the bouncing outer shell from the lower end of the bouncing outer shell and then is clamped in the heart-shaped bouncing guide groove of the bouncing inner core, the other end of the bouncing hook is clamped in the positioning hole of the positioning convex column at the lower part of the bouncing outer shell, and finally the fixing ring is sleeved outside the positioning convex column to fix the bouncing hook.

The bouncing movement has the following defects: when the automatic assembly device is installed, one end of the bouncing hook is required to be stretched into the bouncing shell from the lower end of the bouncing shell to hook the bouncing inner core, and the other end of the bouncing hook is required to be hooked to the positioning hole of the bouncing shell, so that the installation difficulty is high, and the automatic assembly device cannot be used for assembling.

The utility model comprises the following steps:

the utility model aims to provide a bouncing core which is simple and convenient to install and can be assembled by using automatic equipment.

The utility model is realized in the following way:

the utility model provides a spring core, includes shell, fixed knot, activity core and drag hook, fixed knot can dismantle the connection in the shell lower extreme, and the activity core lower extreme is slided and is established in the shell, be equipped with the track groove on the activity core, drag hook upper end is slided and is established in the track inslot, the fixed knot of lower extreme hooking.

In the above-mentioned bouncing core, the detachable connection mode of the fixing buckle and the housing may be: the fixing buckle is in threaded connection in the shell.

In the above-mentioned bouncing core, the detachable connection mode of the fixing buckle and the housing may be: the fixing buckle is detachably connected with the shell through a limit protrusion and a limit groove which are matched with each other.

In the bouncing core, the setting mode of the limiting protrusion and the limiting groove can be as follows: the limiting protrusion is an annular protrusion arranged in the shell, and the limiting groove is an annular groove arranged on the periphery of the fixing buckle.

In the bouncing core, the setting mode of the limiting protrusion and the limiting groove can be as follows: the limiting protrusion is arranged on the periphery of the fixing buckle, and the limiting groove is formed in the shell.

In the bouncing core, the lower end of the fixing buckle is hollow, a notch is axially arranged on the side wall of the lower end of the fixing buckle, and the notch extends to the upper end face of the annular groove.

In the bouncing core, the lower end of the movable core is provided with the mounting shaft, and the upper end of the fixed buckle is provided with the mounting hole matched with the mounting shaft.

In the bouncing core, the outer side surface of the installation shaft comprises a first major arc cylindrical surface and a first plane connecting two ends of the first major arc cylindrical surface, and the inner side wall of the installation hole comprises a second major arc cylindrical surface matched with the first major arc cylindrical surface and a second plane matched with the first plane.

In the bouncing core, the fixing buckle is hollow, the fixing buckle is internally provided with the mounting strip along the radial direction, two ends of the mounting strip are respectively connected to the inner side wall of the fixing buckle, the fixing buckle is provided with the jack, and the lower end of the draw hook penetrates through the jack and stretches into the mounting strip.

In the bouncing core, the movable core comprises a sliding column and a sleeving part arranged below the sliding column, a spring is sleeved outside the sleeving part, the upper end of the spring is in interference limit with the lower end face of the sliding column, the lower end of the spring is in interference limit with the shell, a guide strip is axially arranged on the outer side wall of the sliding column, and a guide groove matched with the guide strip is formed in the inner side wall of the shell.

In the bouncing core, the mounting shaft is arranged below the sleeving part.

In the bouncing core, the lower end of the shell is radially contracted to form the radially contracted part, the lower end of the spring is in interference limit with the upper end face of the radially contracted part, the inner hole wall of the radially contracted part is upwardly extended to form a guide cylinder body, and the lower end of the spring is sleeved outside the guide cylinder body.

In the bouncing core, the upper end of the fixing buckle is arranged in the guide cylinder body, the lower end of the fixing buckle is arranged in the radial shrinkage part, the annular protrusion is arranged on the inner side wall of the radial shrinkage part, and the outer side wall of the upper end of the fixing buckle protrudes outwards to form a limiting protruding edge which is in interference limit with the guide cylinder body.

Compared with the prior art, the utility model has the outstanding advantages that:

1. the fixed buckle detachably connected with the shell is arranged, so that the draw hook can be assembled with the fixed buckle and the movable core outside the shell, and then the draw hook is integrally put into the shell after being assembled;

2. the lower end of the movable core is provided with the mounting shaft, and the upper end of the fixed buckle is provided with the mounting hole matched with the mounting shaft, so that the draw hook is convenient to assemble and the fixed buckle is convenient to clamp with the shell by force;

3. the fixing buckle is hollow, the mounting strips are arranged in the fixing buckle along the radial direction, two ends of each mounting strip are respectively connected to the inner side wall of the fixing buckle, the fixing buckle is provided with the jack, the lower end of the draw hook penetrates through the jack and stretches into the mounting strips, and the draw hook can better hook the fixing buckle while being convenient for clamping the fixing buckle with the shell.

Description of the drawings:

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is an exploded view of the present utility model;

FIG. 4 is a perspective view of the retaining buckle of the present utility model;

fig. 5 is a perspective view of the housing of the present utility model.

Reference numerals: 1. a housing; 2. a fixing buckle; 3. a movable core; 3a, sliding columns; 3b, a sleeving part; 4. a drag hook; 5. a track groove; 6. a limit protrusion; 7. a limit groove; 8. a notch; 9. a mounting shaft; 9a, major arc cylinder one; 9b, plane one; 10. a mounting hole; 10a, a major arc cylinder II; 10b, plane two; 11. a mounting bar; 12. a jack; 13. a spring; 14. a guide bar; 15. a guide groove; 16. a diameter-reduced portion; 17. a guide cylinder; 18. and a limiting convex edge.

The specific embodiment is as follows:

the utility model is further described below with reference to the specific examples, see fig. 1-5:

the utility model provides a spring core, includes shell 1, fixed knot 2, activity core 3 and drag hook 4, fixed knot 2 can dismantle the connection at shell 1 lower extreme, and the slip of activity core 3 lower extreme is established in shell 1, be equipped with track groove 5 on the activity core 3, drag hook 4 upper end is slided and is established in track groove 5, lower extreme hook fixed knot 2.

The installation process of the utility model comprises the following steps: as shown in fig. 1 to 3, the upper end of the draw hook 4 is inserted into the track groove 5, the lower end hooks the fixing buckle 2, and then the whole body is installed into the housing 1, so that the fixing buckle 2 is connected to the lower end of the housing 1, and the lower end of the movable core 3 can slide up and down in the housing 1.

The utility model is provided with the fixed buckle 2 which is detachably connected with the shell 1, so that the draw hook 4 can be assembled with the fixed buckle 2 and the movable core 3 outside the shell 1, and the assembled draw hook 4 is integrally put into the shell 1.

The detachable connection mode of the fixing buckle 2 and the shell 1 is as follows: as shown in fig. 2, 3 and 5, the fixing buckle 2 is detachably connected with the shell 1 through a limit protrusion 6 and a limit groove 7 which are matched with each other.

The setting mode of the limit bulge 6 and the limit groove 7 is as follows: as shown in fig. 2, 3 and 5, the limiting protrusion 6 is an annular protrusion arranged in the housing 1, and the limiting groove 7 is an annular groove arranged at the periphery of the fixing buckle 2.

In order to facilitate the clamping connection between the lower end of the fixing buckle 2 and the shell 1, the lower end of the fixing buckle 2 is hollow, a notch 8 is axially arranged on the side wall of the lower end of the fixing buckle 2, and the notch 8 extends to the upper end face of the annular groove. In this embodiment, 4 notches 8 are uniformly distributed on the circumference.

For the convenience of assembling the drag hook 4 and the convenience of force to clamp the fixed buckle 2 with the shell 1, the lower end of the movable core 3 is provided with a mounting shaft 9, and the upper end of the fixed buckle 2 is provided with a mounting hole 10 matched with the mounting shaft 9. During assembly, the mounting shaft 9 is inserted into the mounting hole 10, so that the fixed buckle 2 and the movable core 3 are connected into a whole, the upper end of the draw hook 4 is inserted into the track groove 5, the lower end of the draw hook hooks the fixed buckle 2, and finally the fixed buckle is integrally installed in the shell 1.

In order to prevent the fixed buckle 2 from rotating relative to the movable core 3 during the assembly process, as shown in fig. 3 and 4, the outer side surface of the installation shaft 9 includes a first major arc cylindrical surface 9a and a first plane 9b connecting two ends of the first major arc cylindrical surface 9a, and the inner side wall of the installation hole 10 includes a second major arc cylindrical surface 10a adapted to the first major arc cylindrical surface 9a and a second plane 10b adapted to the first plane 9 b.

In order to facilitate the clamping connection between the fixed buckle 2 and the shell 1, the draw hook 4 can better hook the fixed buckle 2, the inside of the fixed buckle 2 is hollow, the inside of the fixed buckle 2 is radially provided with a mounting strip 11, two ends of the mounting strip 11 are respectively connected to the inner side wall of the fixed buckle 2, the fixed buckle 2 is provided with an inserting hole 12, and the lower end of the draw hook 4 penetrates through the inserting hole 12 and stretches into the mounting strip 11.

The structure of the movable core 3, and the mounting structure of the spring 13: as shown in fig. 2 and 3, the movable core 3 includes a sliding column 3a and a sleeving part 3b disposed below the sliding column 3a, a spring 13 is sleeved outside the sleeving part 3b, the upper end of the spring 13 abuts against the lower end face of the sliding column 3a and is limited, the lower end of the spring abuts against the housing 1 and is limited, a guide bar 14 is axially disposed on the outer side wall of the sliding column 3a, and a guide groove 15 matched with the guide bar 14 is disposed on the inner side wall of the housing 1. In this embodiment, two guide strips 14 are disposed opposite to each other, and two guide grooves 15 are disposed correspondingly.

Further, the mounting shaft 9 is provided below the fitting portion 3 b.

Specific mounting structure of the spring 13: the lower end of the shell 1 is radially contracted to form a radially contracted part 16, the lower end of the spring 13 is in interference limit with the upper end face of the radially contracted part 16, the inner hole wall of the radially contracted part 16 is upwardly extended to form a guide cylinder 17, and the lower end of the spring 13 is sleeved outside the guide cylinder 17.

Mounting structure of the fixing buckle 2: the upper end of the fixing buckle 2 is arranged in the guide cylinder 17, the lower end of the fixing buckle is arranged in the diameter-reduced part 16, the annular bulge is arranged on the inner side wall of the diameter-reduced part 16, and the outer side wall of the upper end of the fixing buckle 2 is outwards protruded to form a limiting convex edge 18 which is in interference limit with the guide cylinder 17.

The above embodiment is only one of the preferred embodiments of the present utility model, and is not intended to limit the scope of the present utility model, therefore: all equivalent changes in shape, structure and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. A bouncing core, characterized in that: including shell (1), fixed knot (2), activity core (3) and drag hook (4), fixed knot (2) can be dismantled and connect at shell (1) lower extreme, and activity core (3) lower extreme is slided and is established in shell (1), be equipped with track groove (5) on activity core (3), drag hook (4) upper end is slided and is established in track groove (5), lower extreme hook fixed knot (2), fixed knot (2) can dismantle with shell (1) through spacing arch (6) and spacing recess (7) of mutually supporting and be connected.

2. A bouncing core as in claim 1, wherein: the limiting protrusion (6) is an annular protrusion arranged in the shell (1), and the limiting groove (7) is an annular groove arranged on the periphery of the fixing buckle (2).

3. A bouncing core as in claim 2, wherein: the lower end of the fixing buckle (2) is hollow, a notch (8) is axially arranged on the side wall of the lower end of the fixing buckle (2), and the notch (8) extends to the upper end face of the annular groove.

4. A bouncing core as in claim 1, wherein: the lower end of the movable core (3) is provided with a mounting shaft (9), and the upper end of the fixed buckle (2) is provided with a mounting hole (10) matched with the mounting shaft (9).

5. A bouncing core as in claim 4, wherein: the outer side face of the installation shaft (9) comprises a first major arc cylindrical surface (9 a) and a first plane (9 b) connected with two ends of the first major arc cylindrical surface (9 a), and the inner side wall of the installation hole (10) comprises a second major arc cylindrical surface (10 a) matched with the first major arc cylindrical surface (9 a) and a second plane (10 b) matched with the first plane (9 b).

6. A bouncing core as in claim 1, wherein: the fixing buckle (2) is hollow, the fixing buckle (2) is internally provided with a mounting strip (11) along the radial direction, two ends of the mounting strip (11) are respectively connected to the inner side wall of the fixing buckle (2), the fixing buckle (2) is provided with a jack (12), and the lower end of the draw hook (4) penetrates through the jack (12) and stretches into the mounting strip (11).

7. A bouncing core as in claim 1, wherein: the movable core (3) comprises a sliding column (3 a) and a sleeving part (3 b) arranged below the sliding column (3 a), a spring (13) is sleeved outside the sleeving part (3 b), the upper end of the spring (13) is in interference limit with the lower end face of the sliding column (3 a), the lower end of the spring is in interference limit with the shell (1), a guide strip (14) is axially arranged on the outer side wall of the sliding column (3 a), and a guide groove (15) matched with the guide strip (14) is formed in the inner side wall of the shell (1).

8. The bouncing core of claim 7 wherein: the lower end of the shell (1) is radially contracted to form a radially contracted part (16), the lower end of the spring (13) is in interference limit with the upper end face of the radially contracted part (16), the inner hole wall of the radially contracted part (16) is upwardly extended to form a guide cylinder (17), and the lower end of the spring (13) is sleeved outside the guide cylinder (17).