CN218659194U - Shaft lock folding knife and adjustable elastic structure thereof - Google Patents

Abstract

The utility model discloses an adjustable elastic force structure of a shaft lock folding knife, which comprises a spring component and a lining board component, wherein a clamping section is arranged on the lining board component, so that two ends of the spring component can be respectively arranged on the clamping section of the lining board component and a lock pin of a folding knife body; the length direction of defining this folding knife body is vertical, and the quantity of joint section is 2 at least, and every joint section is all inequality with the vertical preceding distance in lockpin hole of this lockpin, and spring unit's I end can install on the joint section. The utility model discloses arranged 2 at least joint sections on the welt subassembly of folding sword body, and spring unit's I end is installed in the joint section of joint section, so, the target joint section of I end joint through adjustment spring unit for distance between the vertical front of target joint section and lockpin hole changes, and spring unit deformation changes, and then adjustable elasticity that makes spring unit increases or weakens, in order to obtain suitable elasticity.

Description

Shaft lock folding knife and adjustable elastic structure thereof

Technical Field

The utility model relates to a cutter technical field, especially an adjustable elastic construction of folding sword of shaft lock.

Background

In the folding knife in the form of a lock shaft in the market at present, the mounting position of a spring of a lock pin is in a fixed state, so that the elasticity of the spring is theoretically fixed after mounting, but the elasticity of the spring is weakened due to factors such as machining errors of the spring or deformation of the spring in the long-term use process, the spring cannot meet the use requirement, and meanwhile, potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The present invention provides an adjustable elastic structure of a shaft lock folding knife, which is provided with a plurality of adjusting positions on a left lining board and a right lining board to obtain different degrees of elasticity.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

an adjustable elastic force structure of a shaft lock folding knife comprises a spring assembly and a lining plate assembly, wherein a clamping section is arranged on the lining plate assembly, so that two ends of the spring assembly can be respectively arranged on the clamping section of the lining plate assembly and a lock pin of a folding knife body; the length direction of defining this folding knife body is vertical, and the quantity of joint section is 2 at least, and every joint section is all inequality with the vertical preceding distance in lockpin hole of this lockpin, and spring unit's I end can install on the joint section.

Wherein, the joint section is the position hole of locking, and spring unit's I end can be installed on the position hole of locking. The lining plate component comprises a left lining plate and a right lining plate, the left lining plate and the right lining plate are symmetrically arranged on the left side and the right side of the thickness direction of the blade of the folding knife body, and at least 2 locking holes are uniformly distributed in the left lining plate and the right lining plate; the spring assembly comprises a left spring and a right spring, the left spring is arranged on the left side of the left lining plate, and the right spring is arranged on the right side of the right lining plate; and under the assembled state, the protrusion joint is rolled over on the lock position hole of left welt to the I end right side of left spring, and the protrusion joint is rolled over on the lock position hole of right welt to the I end left side of right spring.

As above-mentioned, at least 2 lock position holes have been arranged on the welt subassembly of folding knife body, and spring unit's I end is installed on locking position hole, and spring unit's II end is installed on the lockpin, so, under assembled state, through the target lock position hole that the I end of adjustment spring unit will joint, cause the distance between the vertical preceding edge of target lock position hole and lockpin hole to change, spring unit deformation changes, and then adjustable elasticity that makes spring unit increases or weakens, in order to obtain suitable elasticity.

Based on the foregoing example, in a further preferred example, the width direction of the folding knife body is defined as the transverse direction, a base hole is arranged on the lining plate assembly, the base hole extends longitudinally to form a strip-shaped hole structure, at least 2 locking holes are arranged at one transverse end of the base hole, and each locking hole is communicated to the base hole, so that the end I of the spring assembly can move from one locking hole to other locking holes through the base hole under the action of external force; the lock position hole is of a major arc structure, and the opening end of the lock position hole is arranged on the end edge of one transverse end of the base hole in a clinging mode. Therefore, under the action of external force, the end I of the spring assembly is directly pushed to move from one locking hole to other locking holes through the base hole, so that the elastic force of the spring assembly is conveniently adjusted.

Based on the foregoing example, in a further preferred example, the at least 2 capture holes are disposed at a longitudinally rearward position of the capture hole of the lock pin, the at least 2 capture holes are disposed at an end of the base hole that is laterally away from the capture hole, an arc-shaped notch is disposed between two adjacent capture holes, and the arc-shaped notch is disposed at a longitudinally forward side edge of the capture hole that is rearward. Therefore, the arc-shaped notch can serve as a guide port to play a role in guiding and is convenient for pushing the end I of the spring assembly to move into or out of the locking hole.

Based on the foregoing example, in a further preferred example, the adjustable elastic structure further includes a spacer bush, the base holes and the lock position holes on the left lining board and the right lining board are through holes, the spacer bush is inserted into the lock position holes on the left lining board and the right lining board, the spacer bush can move from the lock position hole to other lock position holes through the base hole under the action of external force, the axial two end portions of the spacer bush are provided with clamp holes, and in an assembled state, the right folding protrusion at the I end of the left spring is clamped in the clamp hole at the axial left end of the partition board, and the left folding protrusion at the I end of the right spring is clamped in the clamp hole at the axial right end of the partition board; the base hole and the locking hole are combined into an adjusting hole, the adjusting hole is provided with an adjusting opening for applying force by external force, the adjusting opening is positioned between the left lining plate and the right lining plate, and the adjusting opening extends to the adjusting hole from the outer wall of the folding knife body in a straight line mode. Therefore, an adjusting structure for adjusting the mounting positions of the I ends of the left spring and the right spring by pushing the spacer bush through the adjusting port is formed, and under the action of external force, the spacer bush is directly pushed to adjust a target locking hole through which the spacer bush penetrates, so that the I ends of the left spring and the right spring can be moved to other locking hole positions from a locking hole position through the base hole, and the elasticity of the left spring and the right spring can be adjusted conveniently and simultaneously.

Based on the foregoing example, in a further preferred example, the middle part of the spacer sleeve is provided with a radially outward protruding spacer section, and the axial length of the spacer section in the axial direction is matched with and limited by the distance between the left lining plate and the right lining plate, preferably, the axial length of the spacer section is matched with the distance between the left lining plate and the right lining plate. Therefore, the end faces of the two axial ends of the spacing section are respectively matched with the left lining plate and the right lining plate for limiting, so that the spacing section can slide and is limited by the left lining plate and the right lining plate to keep a penetrating state, and the spacing section can continuously span on the left lining plate and the right lining plate along the thickness direction in an assembly state or an adjustment process; under the spacing situation of not setting up the interval, probably lead to the spacer slope during exogenic action, spacing with solving this technical problem via the interval, ensure that the spacer keeps in thickness to (even take place the slope and also can not have the large angle slope), need not be in the adjustment in-process in the external force action of intention on the spacer and exert oneself the action point, the quick adjustment of being convenient for.

Based on the foregoing example, in a further preferred example, the outer wall of the spacer sleeve is provided with a radially contracted pressing section, so that the pressing section serves as a force acting area to facilitate force application adjustment on the pressing section; wherein, the axial cross-section of the outer wall surface of the pressing section is of a circular arc or elliptical arc structure, so that the outer wall of the pressing section is changed in an arc shape in the axial direction, the acting point of force application on the transverse and longitudinal surfaces can move towards the center, the balance force application is facilitated, and the arc gradually contracts to enable the outer wall to have higher strength.

Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:

1. the utility model discloses an adjustable elastic force structure of folding sword of shaft lock, at least 2 joint sections have been arranged on the welt subassembly of folding sword body, and spring unit's I end is installed in the joint section of joint section, spring unit's II end is installed on the lockpin, thus, under the assembled state, the target joint section of the I end of through adjustment spring unit wanting the joint, make the distance between the vertical front of target joint section and lockpin hole change, spring unit deformation changes, and then adjustable elasticity that makes spring unit increases or weakens, if the great then vertical antedisplacement of elasticity, if the less then vertical antedisplacement of elasticity, in order to obtain suitable elasticity.

2. The adjusting structure for adjusting the mounting positions of the I ends of the left spring and the right spring by pushing the spacer through the adjusting port is formed by arranging the spacer, and under the action of external force, the I ends of the left spring and the right spring can be moved to other locking hole positions from one locking hole position through the base hole by directly pushing the spacer to adjust the target locking hole through which the spacer penetrates, so that the elasticity of the left spring and the right spring can be adjusted conveniently and simultaneously.

Drawings

Fig. 1 is a schematic structural view of an example 1 of the shaft lock folding knife of the present invention.

Fig. 2 is a partially enlarged view of fig. 1.

Fig. 3 is a partial internal structural view of fig. 1.

Fig. 4 is another partial internal structural view of fig. 1.

Fig. 5 is another view angle structure diagram of fig. 1.

Fig. 6 is an exploded view of fig. 1.

Fig. 7 is a partially enlarged view of fig. 6.

Fig. 8 is another partial enlarged view of fig. 6.

Fig. 9 is another view angle structure diagram of fig. 6.

Fig. 10 is a schematic view of the liner panel face structure of fig. 1.

FIG. 11 is a schematic view of the spring assembly and spacer mating arrangement of FIG. 1.

Fig. 12 is a partially exploded view of fig. 10.

Fig. 13 is a schematic view of the spacer structure of fig. 1.

Fig. 14 is a schematic view of an alternate view axial cross-sectional configuration of fig. 12.

Fig. 15 is a projection view of the partial dimension of fig. 12.

In the drawing, the knife handle comprises a knife handle 1, a knife handle 11, a handle component 12, a lining plate component 13, a partition plate 2, a blade 3, a rotating shaft 4, a locking pin 5, an adjusting component 51, an adjusting hole 511, a base hole 512, a locking hole 513, an arc notch 52, a spacer sleeve 522, a clamping hole 523, a partition section 524, a pressing section 53 and a spring component.

Detailed Description

Example 1

Referring to fig. 1, the length direction of the folding knife body is defined as the longitudinal direction, and the up-down direction shown in fig. 1 is the longitudinal direction; the width direction of the folding knife body is transverse, and the front and back directions shown in figure 1 are transverse; the thickness direction of the folding knife body is the thickness direction, and the left and right directions shown in fig. 1 are the thickness direction of the left and right sides of the folding knife body.

Referring to fig. 1 to 10, the adjustable elastic force structure of the shaft lock folding knife in embodiment 1 includes a spring assembly 53 and a lining plate assembly 12, wherein a clamping section is disposed on the lining plate assembly 12, so that two ends of the spring assembly 53 can be respectively mounted on the clamping section of the lining plate assembly 12 and a lock pin 4 of a body of the folding knife; the number of the clamping sections is at least 2, the distance between each clamping section and the longitudinal front edge of the hole of the lock pin 4 is different, and the I end of the spring assembly 53 can be arranged on the clamping sections.

Wherein, the joint section is the I end mounting structure of spring unit 53, if the I end of spring unit 53 is straight shaft-like then the joint section adopts the pass so that peg graft, if spring unit 53 is the annular pole then the joint section can adopt the post so that cup joint. The application will be described below by taking a hole type clamping section as an example.

The clamping section is a locking hole 512, and at this time, the I end of the spring assembly 53 can be clamped on the locking hole 512. The capture hole 512 may be a through hole or a blind hole.

The adjustable elastic force structure is mainly applied to the shaft lock folding knife body, and the lining plate component and the spring component 53 of the shaft lock folding knife body are generally arranged in pairs, which is taken as an example for explanation; at this time, the liner plate component 12 comprises a left liner plate and a right liner plate (a liner plate and a liner plate B), the left liner plate and the right liner plate have the same structure, the left liner plate and the right liner plate are symmetrically arranged at the left side and the right side of the thickness direction of the blade 2 of the folding knife body, and at least 2 locking holes 512 are uniformly arranged on the left liner plate and the right liner plate; the spring assembly 53 comprises a left spring and a right spring (a surface spring and a B surface spring), the left spring and the right spring are symmetrical in structure, the left spring is arranged on the left side of the left lining plate, and the right spring is arranged on the right side of the right lining plate; in an assembly state, the I end right folding protrusion of the left spring is clamped on the locking hole 512 of the left lining plate, and the I end left folding protrusion of the right spring is clamped on the locking hole 512 of the right lining plate; left spring and right spring all adopt crooked spring structure, make its deformation change through adjusting both ends distance, crooked spring will kick-back in order to obtain elasticity because of the pressurized. Of course, the shaft lock folding knife body can also adopt a 1-spring structure, and in this case, the spring assembly 53 refers to 1 spring.

The mounting structure of the I end of the spring component 53 of the existing shaft lock folding knife body is improved, for example, "the locking device of the integrated lock pin 4, the publication number is CN214081530U, and the publication number is 2021.08.31 Chinese utility model patent", and the fixing hole of the I end of the spring component 53 on the lining plate is limited by the existing shaft lock folding knife body. In this application, the fixing hole is modified, a clamping section area is defined around the single fixing hole, and at least 2 adjustable mounting holes are arranged in the clamping section area, in this embodiment 1, at least 2 locking holes 512 are arranged in the clamping section area, that is, at least 2 locking holes 512 are arranged in the longitudinal direction of a straight line or an arc line, etc. (the fixing holes of the folding knife body of the existing shaft lock are designed to be at least 2 and arranged in the longitudinal direction).

As shown in fig. 10, in the present embodiment 1, 3 circular or elliptical locking holes 512 are provided in the left and right liners.

During adjustment, the handles on the peripheries of the left and right side lining plate assemblies of the folding knife body are required to be disassembled, then the I ends of the left spring and the right spring are pulled outwards in thickness, and then the I ends are longitudinally moved backwards (in the direction away from the blade) or longitudinally moved forwards (in the direction close to the blade) and inserted into the target locking hole 512, so that complete elasticity adjustment can be realized.

As above-mentioned, at least 2 joint sections have been arranged on the welt subassembly of folding sword body, and the I end of spring unit 53 installs on the joint section of joint section, the II end of spring unit 53 installs on lockpin 4, thus, under the assembled state, through the target joint section of the I end required joint of adjustment spring unit 53, make the distance between the vertical preceding edge in target joint section and 4 holes of lockpin change, spring unit 53 deformation changes, and then adjustable elasticity that makes spring unit 53 increases or weakens, if elasticity is great then vertically move backward, if elasticity is less then vertically move forward, in order to obtain suitable elasticity.

Example 2

In addition to embodiment 1, embodiment 2 includes a slide adjusting structure, which is specifically as follows:

referring to fig. 1-10, in the adjustable elastic structure of the shaft lock folding knife of this embodiment 2, a base hole 511 is disposed on the backing plate component, the base hole 511 extends longitudinally to form a strip-shaped hole structure, at least 2 lock positioning holes 512 are disposed at one transverse end of the base hole 511, and each lock positioning hole 512 is respectively communicated to the base hole 511, so that the I-end of the spring component 53 can move from one lock positioning hole 512 to other lock positioning holes 512 through the base hole 511 under the action of an external force. The term "base hole 511 extending in the longitudinal direction" means a parallel line parallel to the longitudinal direction, or an oblique line or an arc line intersecting the longitudinal direction, and the strip-shaped hole is linear (line segment shape), circular arc shape, or elliptic arc shape.

As shown in fig. 10, the clamping section is arranged at a position longitudinally behind the hole of the lock pin 4, and at least 2 lock position holes 512 are arranged at one end of the base hole 511 which is far away from the hole of the lock pin 4 in the transverse direction; of course, in other examples, the locking hole may be disposed on the other side of the base hole 511.

The locking hole 512 is a major arc structure, and the opening end of the locking hole 512 is closely attached to the end edge of one lateral end of the base hole 511. Of course, in other examples, a transition hole may also be provided between the capture hole 512 and the base hole 511. The base hole 511 and the locking hole 512 (or the base hole 511, the locking hole and the transition hole) constitute an adjusting hole 51, and the adjusting hole 51 may be a through hole or a blind hole.

During adjustment, the handles on the peripheries of the left and right side lining plate assemblies of the folding knife body are disassembled, and then the I ends of the left spring and the right spring are pushed to move into the target locking hole 512, so that complete elastic force adjustment can be realized.

Thus, under the action of external force, the end I of the spring component 53 is directly pushed to move from one of the locking holes 512 to the other locking holes 512 through the base hole 511, so as to adjust the elastic force of the spring component 53.

Example 3

On the basis of embodiment 2, in this embodiment 3, in order to directly push the spring assembly 53 for adjustment without disassembling the handle, the sliding adjustment structure of the adjustment hole 51 is configured with an adjustment opening for applying force by external force, the adjustment opening is located between the left lining plate and the right lining plate, and extends linearly from the outer wall of the folding knife body to the adjustment hole 51, and the partition plate 13 extends only to the middle of the lining plate assembly in the longitudinal direction to expose the adjustment hole 51 as shown in fig. 1. At this time, the end portions of the ends I of the left spring and the right spring protrude between the left lining plate and the right lining plate, and at this time, the base hole 511, the locking hole 512 and the transition hole are all through holes, so that an external push rod is inserted into the adjusting hole to abut against the end portion (protruding between the left lining plate and the right lining plate) of the end I of the left spring or the end I of the right spring, and then force is applied to push the locking hole 512 to move to other locking holes 512 through the base hole 511, thereby completing the elastic force adjustment.

Example 4

In addition to embodiment 2 or embodiment 3, embodiment 4 has a guide port structure, which is specifically as follows:

referring to fig. 1 to 10, in the adjustable elastic structure of the shaft lock folding knife of this embodiment 4, the at least 2 locking holes 512 are disposed at a longitudinal rear position of the locking pin 4 hole of the locking pin 4, the at least 2 locking holes 512 are disposed at one end of the base hole 511 that is far away from the locking pin 4 hole in the transverse direction, an arc notch 513 is disposed between two adjacent locking holes 512, the arc notch is in a convex arc, a convex elliptical arc, a concave arc or a concave elliptical arc structure, as shown in the drawing, this embodiment 3 adopts a convex arc structure, and the arc notch 513 is disposed at a longitudinal front side edge of the locking hole 512 that is located at the rear.

In this manner, the arcuate notch 513 may act as a guide port to facilitate movement of the end I of the spring assembly 53 into and out of the capture aperture 512.

Example 5

In addition to the examples of the through holes 51 in the embodiments 2, 3, and 4, the present embodiment 5 has a pushing spring displacement adjustment structure, which is specifically as follows:

referring to fig. 1 to 15, the adjustable elastic force structure of the shaft lock folding knife in this embodiment 5 further includes a spacer bush 52, the base hole 511 and the lock position hole 512 on the left lining board and the right lining board are through holes, the spacer bush 52 penetrates through the lock position hole 512 on the left lining board and the right lining board, the spacer bush 52 can move from the lock position hole 512 to other lock position holes 512 through the base hole 511 under the external force, the axial ends of the spacer bush 52 are provided with clamp holes, and in an assembled state, the I-end right-folded protrusion of the left spring is clamped in the clamp hole at the axial left end of the partition board, and the I-end left-folded protrusion of the right spring is clamped in the clamp hole at the axial right end of the partition board.

Therefore, a pushing spring displacement adjusting structure for adjusting the mounting positions of the I ends of the left spring and the right spring by pushing the spacer bush 52 through the adjusting opening is formed, an external push rod is inserted into the adjusting opening to be abutted against the spacer bush 52, then the force is applied for pushing, and under the action of external force, the spacer bush 52 is directly pushed to adjust a target locking hole 512 through which the spacer bush is to be inserted, so that the I ends of the left spring and the right spring can be moved to other locking holes 512 through the base hole 511 from a locking hole 512 position, and the elasticity of the left spring and the right spring can be adjusted conveniently.

Example 6

In addition to embodiment 5, embodiment 6 has a structure for limiting the position of the spacer 52, which is specifically as follows:

referring to fig. 1 to 15, in the adjustable elastic force structure of the shaft lock folding knife of this embodiment 6, the middle portion of the spacer 52 is provided with a radially outward protruding spacer 523, and the axial length of the spacer 523 in the axial direction is matched with the distance between the left lining plate and the right lining plate for limiting, preferably, the axial length of the spacer 523 is matched with the distance between the left lining plate and the right lining plate, so that the spacer can slide between the left lining plate and the right lining plate vertically (or approximately vertically) to the left lining plate and the right lining plate. Of course, the axial length of the spacer 523 is smaller than the distance between the left and right liners by a certain difference, so that the spacer can be tilted by a certain tilt angle, which is smaller than 30 °, such as 5 °, 10 ° or 15 °, when the spacer is obliquely placed between the left and right liners.

Therefore, the end faces of the two axial ends of the interval segment 523 are respectively matched with the left lining plate and the right lining plate for limiting, so that the interval segment can slide and is kept in a penetrating state by the limitation of the left lining plate and the right lining plate, and the interval segment can continuously span on the left lining plate and the right lining plate along the thickness direction in the assembling state or the adjusting process; under the condition that the spacing section 523 is not arranged for limiting, the spacer 52 can incline (the spacer is obliquely intersected with the left lining plate and the right lining plate) under the action of external force, the technical problem is solved by the spacing section 523 for limiting, the spacer 52 is ensured to be kept in the thickness direction (the spacer is not inclined at a large angle even if the spacer is inclined), the acting point of external force acting on the spacer 52 is not needed in the adjustment process, and the rapid adjustment is facilitated.

Example 7

Referring to fig. 1 to 15, based on embodiment 6, in the adjustable elastic force structure of the shaft lock folding knife of embodiment 7, a radially contracted pressing section 524 is disposed on an outer wall of the spacing section 523 of the spacer 52, so that the pressing section 524 serves as a force acting area to facilitate force application and adjustment on the pressing section 524; wherein, the axial cross-section of the outer wall surface of the pressing section 524 is a circular arc or an elliptical arc structure, as shown in fig. 15, this embodiment 7 adopts a circular arc structure, so that the outer wall of the pressing section 524 changes in an arc shape in the axial direction, and can move the force application point of the force application on the transverse and longitudinal surfaces to the center, thereby facilitating the balance of the force application, and the arc gradually contracts to enable the outer wall to have higher strength.

As shown in fig. 1 to 15, in order to provide an example of the most preferable combination of all the features of the foregoing embodiments 1 to 7, an adjusting assembly 5 (including an adjusting hole 51 and a spacer 52) is provided on the folding blade body, specifically, a plurality of adjusting positions (locking holes 512) are provided on the left and right liners, the adjusting hole 51 is combined by matching with the base hole, the bent portions of the left and right springs are hooked into small holes (locking holes) at both ends of the spacer 52, and the spacer 52 is pressed and moved into the adjusting positions at different positions to obtain different degrees of elastic force, so that the service life is not affected by factors such as shape error or unstable elastic force of the spring assembly 53, and the use requirements can be satisfied by adjusting the elastic force.

Example 8

On the basis of one of embodiments 1 to 7, this embodiment 8 is described by using the shaft lock folding knife with adjustable elastic force structure, which is as follows:

referring to fig. 1 to 15, the shaft-lock folding knife of embodiment 8 includes a folding knife body having an adjustable elastic structure as in one of embodiments 1 to 7.

As shown in fig. 1-15, which is an example of the most preferred combination of all the features of the foregoing embodiments 1-7, wherein the features of other components except the improved features of the present application are the same as those of the prior art, some of the dimensional parameters are shown in fig. 15, and the dimensional parameters in fig. 15 are in mm.

The folding knife comprises a knife handle 1 and a blade 2, wherein the knife handle 1 comprises a handle component 11, a lining plate component 12 and a partition plate 13; the left lining plate and the right lining plate are arranged on the left side and the right side of the partition plate 13 through a six-round head nail suite 7 and are provided with straight body stopping nails I71, and the longitudinal front ends of the lining plate components are also provided with straight body stopping nails II 22; the blade 2 is rotatably connected to the longitudinal front end of the knife handle 1 through a concave head rotating shaft 3 and a six-flower concave head nail sleeve member 3, and a plastic pad and a copper pad of the sleeve member 3 are arranged between the blade and the lining plate component; the handle component 11 comprises a left handle and a right handle (an A-side handle and a B-side handle), the rear longitudinal ends of the left handle and the right handle are arranged at the left side and the right side of the lining plate component 12 through a head tack suite I61 and a head tack suite II 62, and the clamps 6 are arranged at the positions; the root of the blade 2 is provided with a lateral groove stop letter nail 21; the lock pin 4 is arranged at the position of the lock pin 4 hole of the lining plate component 12; etc., these are all the existing technologies, such as "locking device of integral lock pin 4, publication No. CN214081530U, published as 2021.08.31, chinese utility model patent", which is not described herein again; meanwhile, for improved features of the spring assembly 53, please refer to the foregoing embodiments 1 to 7, and the description thereof will not be repeated. In particular, in application, the shaft lock folding knife can adopt the adjustable elastic structure as in one of embodiments 1 to 7 to form an application example according to actual needs, and a description is not provided herein.

As mentioned above, this folding sword of shaft lock is equipped with a plurality of regulation positions (lock position hole 512) on left welt and right welt, in the aperture (joint hole) at spacer 52 both ends were hung in the crook of left spring and right spring, through pressing down spacer 52 and remove in the regulation position of different positions to obtain the elasticity of different degree, so, do not influence life because of factors such as spring form error or elasticity unstability, can satisfy operation requirement through adjusting elasticity.

It should be noted that, the above embodiments may be combined with each other by one or more than two according to actual needs, and a plurality of embodiments are illustrated by a set of drawings combining technical features, which are not described herein.

It is to be understood that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used herein as terms of orientation or positional relationship, relative to one another, and are used solely for convenience in describing the present invention and to simplify the description.

The above description is intended to illustrate and describe the preferred embodiments of the invention, but not to limit the scope of the invention, and all equivalent changes and modifications made in accordance with the teachings of the present invention are intended to be covered by the present invention.

Claims (8)

1. An adjustable elastic force structure of a shaft lock folding knife comprises a spring assembly and a lining plate assembly, wherein a clamping section is arranged on the lining plate assembly, so that two ends of the spring assembly can be respectively arranged on the clamping section of the lining plate assembly and a lock pin of a folding knife body; the method is characterized in that: the length direction of this folding knife body of definition is vertical, the quantity of joint section is 2 at least, and every joint section is all inequality with the distance in the vertical preceding of the lockpin hole of this lockpin, and spring unit's I end can install on the joint section.

2. The adjustable elastic structure of the shaft lock folding knife according to claim 1, characterized in that: the clamping section is a locking hole, and the end I of the spring assembly can be arranged on the locking hole; the width direction of the folding knife body is defined to be transverse, a base hole is arranged on the lining plate component, the base hole extends longitudinally to form a strip-shaped hole structure, at least 2 locking holes are arranged at one transverse end of the base hole, and each locking hole is communicated to the base hole respectively, so that the end I of the spring component can move from one locking hole to other locking holes through the base hole under the action of external force; the lock position hole is of a major arc structure, and the opening end of the lock position hole is arranged on the end edge of one transverse end of the base hole in a clinging mode.

3. The adjustable elastic structure of the shaft lock folding knife according to claim 2, characterized in that: the at least 2 locking holes are arranged at the longitudinal rear position of the locking pin hole of the locking pin, the at least 2 locking holes are arranged at one end, far away from the locking pin hole, of the base hole in the transverse direction, an arc-shaped notch is arranged between every two adjacent locking holes, and the arc-shaped notch is arranged at the longitudinal front side edge of the locking hole located at the rear position.

4. The adjustable elastic structure of the shaft lock folding knife according to claim 2, characterized in that: the liner plate component comprises a left liner plate and a right liner plate, the left liner plate and the right liner plate are symmetrically arranged on the left side and the right side of the thickness direction of the blade of the folding knife body, and at least 2 locking holes are uniformly distributed in the left liner plate and the right liner plate; the spring assembly comprises a left spring and a right spring, the left spring is arranged on the left side of the left lining plate, and the right spring is arranged on the right side of the right lining plate; and under the assembled state, the I end of the left spring is folded right to bulge and is clamped on the position locking hole of the left lining plate, and the I end of the right spring is folded left to bulge and is clamped on the position locking hole of the right lining plate.

5. The adjustable elastic structure of the shaft lock folding knife according to claim 4, characterized in that: still include the spacer sleeve, the equipartition has been put on left welt and the right welt and has been the basic hole and the lock position hole that are the perforating hole form, the spacer sleeve is worn to arrange in the lock position hole of left welt and right welt, the spacer sleeve can be removed to other lock position holes through the basic hole by a lock position hole under the exogenic action, the axial both ends tip of spacer sleeve all is provided with the joint hole, and under the assembled state, the protruding joint is rolled over on the joint hole of the axial left end of baffle in the I end right side of left side spring, the protruding joint is rolled over on the joint hole of the axial right-hand member of baffle in the I end left side of right side spring.

6. The adjustable elastic structure of the shaft lock folding knife according to claim 5, wherein: the middle part of the spacer sleeve is provided with a radial outward convex spacing section, and the axial length of the spacing section is matched with the space between the left lining plate and the right lining plate.

7. The adjustable elastic structure of the shaft lock folding knife according to claim 6, wherein: the outer wall of the spacing section of the spacer sleeve is provided with a radially contracted pressing section; wherein, the axial section of the outer wall surface of the pressing section is in a circular arc or elliptic arc structure; and the base hole and the locking hole are combined into an adjusting hole, the adjusting hole is provided with an adjusting opening for applying force by external force, the adjusting opening is positioned between the left lining plate and the right lining plate, and the adjusting opening extends to the adjusting hole from the outer wall of the folding knife body in a straight line.

8. The utility model provides a shaft lock folding knife, includes folding knife body, its characterized in that: the folding knife body adopts an adjustable elastic force structure as claimed in any one of claims 1 to 7.

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