CN216111584U - Multi-stroke fastening device - Google Patents

Abstract

A multi-stroke fastening device belongs to the technical field of fixing devices. A multi-stroke fastening device comprises a first clamp, a second clamp and an adjuster, wherein the first clamp is provided with two through holes, and one through hole is provided with a notch extending to the edge of the first clamp; the second clamp is connected with two stand columns matched with the two through holes, and one of the stand columns is provided with a first clamping tooth. The through hole is provided with a notch extending to the edge of the first clamp, and the first clamp can be sleeved in or withdrawn from one of the upright posts through the notch, so that the operation is convenient. The first latch is used for limiting the contact position of the first clamp and the corresponding stand column, the adjuster can limit the first clamp to be far away from the second clamp along the axis direction of the stand column at the preset position of the other stand column, and then the distance between the first clamp and the second clamp is adjusted, so that the clamped objects in different shapes and sizes are fastened. The multi-stroke fastening device is simple in structure and convenient to operate.

Description

Multi-stroke fastening device

Technical Field

The application relates to the technical field of fixing devices, in particular to a multi-stroke fastening device.

Background

The fixing device is widely applied in real life, the clamped objects have different shapes and sizes, and different fastening devices are frequently required to be frequently replaced according to the shapes and sizes of the clamped objects in the fastening process. The existing fastening device has the disadvantages of low universality, complex structure and inflexible disassembly and assembly.

SUMMERY OF THE UTILITY MODEL

Based on the defects, the application provides a multi-stroke fastening device to partially or completely improve and even solve the problems that the related art is difficult to adapt to fastening and disassembling of clamping objects with different shapes and sizes.

The technical problem of the present application is solved by the following technical solutions:

examples of the present application provide a multi-stroke fastening device comprising:

the first clamp is provided with two through holes arranged along a preset direction, wherein one through hole is provided with a notch extending to the edge of the first clamp;

the second clamp is connected with two stand columns matched with the two through holes, one of the two stand columns is matched with one of the through holes through a notch, one of the stand columns is provided with a first clamping tooth, and the first clamping tooth is used for limiting the contact position of the first clamp with one of the stand columns;

an adjuster for limiting the first clamp away from the second clamp in the direction of the axis of the other upright at a selected position of the other upright.

In the implementation process, the multi-stroke fastening device is utilized, when the clamped object is fastened or disassembled, the first clamp and one of the two stand columns are separated or combined through the notch, and the operation is convenient.

The clamping device comprises a first clamp, a second clamp, a regulator and a clamping device, wherein the first clamp is arranged in one upright post, the contact position of the first clamp and the upright post provided with the first clamp are limited by the first clamp, the contact position of the first clamp, which is contacted with the upright post provided with the first clamp, is contacted with the first clamp, the regulator is arranged, the first clamp is limited to move away from the second clamp along the axis of the other upright post (namely, the regulator can move along the axis of the upright post and is limited to move away from the second clamp along the axis of the upright post at a certain position of the upright post), and then the distance between the first clamp and the second clamp is regulated, so that clamped objects with different shapes and sizes are fastened.

The multi-stroke fixing device can realize the fastening of clamping objects with different shapes and sizes, and is simple to operate in the clamping and taking-out processes of the clamped objects.

With reference to the first aspect, in a first possible implementation manner of the first aspect of the present application, a second latch is disposed in a through hole that is matched with the pillar where the first latch is disposed, and the first latch is engaged with the second latch.

In the implementation process, the second clamping teeth are arranged in the through holes matched with the stand columns provided with the first clamping teeth, and the contact positions of the first clamp and the stand columns provided with the first clamping teeth are limited through the matching of the second clamping teeth and the first clamping teeth. Through the cooperation of first latch and second latch, the meshing effect between the latch can be better fix first anchor clamps in the relevant position that contacts with first latch, and the chucking is effectual. Through the cooperation of first latch and second latch, can not receive the high restriction of through-hole, the more that first latch distributes in succession in the stand, the contact position that first anchor clamps and stand contact is more, can increase the regulation precision of distance between first anchor clamps and the second anchor clamps.

With reference to the first aspect, in a second possible implementation manner of the first aspect of the present application, the first latch has at least two steps that are spaced apart in an axial direction of one of the pillars, and a distance between adjacent steps is not less than a height of the through hole that is matched with the pillar on which the first latch is disposed.

With reference to the first aspect, in a third possible implementation manner of the first aspect of the present application, the notch is provided at the through hole that is matched with the pillar provided with the first latch.

In the implementation process, the distance between the two adjacent steps is not less than the height of the through hole matched with the stand column provided with the first clamping tooth, one end of the first clamp where the through hole is located can be fixed between the two steps, and then the contact position of the first clamp and the stand column is limited. And, the distance between two adjacent steps is not less than the height with this stand matched with through-hole in the stand, can increase the area of contact of this through-hole and this stand contact (if the distance between two adjacent steps is less than the height of through-hole, then the through-hole card is when between two adjacent steps, the upper surface of through-hole is the line contact with the hypotenuse of last step, the lower surface of through-hole also is the line contact with the hypotenuse of lower step, the middle part of through-hole does not contact with the stand, the concentrated effort at through-hole both ends is stronger, increase the wearing and tearing of through-hole and step), reduce the wearing and tearing of through-hole and first latch.

The notch is arranged at the through hole matched with the upright post provided with the first clamping tooth, and the part between two adjacent steps in the upright post is clamped into or withdrawn from the through hole through the notch, so that the operation is convenient.

With reference to the first aspect, in a fourth possible embodiment of the first aspect of the present application, the first clamp has a flat plate shape;

with reference to the first aspect, in a fifth possible implementation manner of the first aspect of the present application, the second clamp has a flat plate shape.

In the implementation process, one or both of the first clamp and the second clamp are arranged in a flat plate shape, so that the contact area between the first clamp or the second clamp and the clamped object can be increased, and the clamped object is prevented from being damaged or destroyed due to over concentrated stress in the fastening process.

With reference to the first aspect, in a sixth possible implementation manner of the first aspect of the present application, the first clamp is provided with a first clamping portion, the first clamping portion has a first contact surface for contacting with an object to be clamped, and the first contact surface is an arc-shaped surface.

With reference to the first aspect, in a seventh possible implementation manner of the first aspect of the present application, the second clamp is provided with a second clamping portion, the second clamping portion has a second contact surface for contacting with an object to be clamped, and the second contact surface is an arc-shaped surface.

In the above-mentioned realization process, set up the clamping part in first anchor clamps and second anchor clamps, provide the centre gripping position by the centre gripping thing, will be used for and set to the arcwall face by the contact surface of centre gripping thing contact, when the centre gripping thing of fastening different diameters, by the curved surface in the centre gripping thing can with the laminating of the arcwall face of clamping part, increase the area of contact of clamping part and by the centre gripping thing, avoid by the damage of centre gripping thing. In addition, the arc-shaped surface of the contact part can prevent the clamped object from sliding in the fastening process, and the fastening effect of the fastening device on the clamped object is further enhanced.

With reference to the first aspect, in an eighth possible implementation manner of the first aspect of the present application, the notch extends to an edge of the first clamp along a direction perpendicular to the preset direction.

In the implementation process, the notch at the through hole is extended to the edge of the first clamp along the vertical direction of the preset direction, when the clamped object is fastened or taken out, one end of the notch of the first clamp is rotated along the extending direction of the notch, and the through hole with the notch can be clamped into or withdrawn from the corresponding upright post. When the clamped object is taken out, the through hole provided with the notch can be withdrawn from the corresponding upright column by rotating along the extending direction of the notch under the condition that another through hole not provided with the notch is not taken out from the corresponding upright column (if the notch extends to the edge of the first clamp along the preset direction, the first clamp is a rigid piece and cannot stretch and deform, in the process of withdrawing the upright column along the notch, the regulator needs to be adjusted firstly to enable the first clamp and the clamped object to be loosened, the through hole not provided with the notch is lifted to a certain position from the position, the part between the two upright columns in the first clamp is increased, and the through hole provided with the notch is enough to withdraw from the proper position of the upright column along the notch.

With reference to the first aspect, in a ninth possible implementation manner of the first aspect of the present application, the adjuster is a wing nut, and the first pillar is provided with a thread that mates with the wing nut.

In the implementation process, the butterfly nut is convenient to mount and dismount, auxiliary tools (such as a wrench and the like) are not needed in the screwing or unscrewing process, the operation is simple, and the time and the labor are saved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the prior art of the present application, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is a schematic plan view of a multi-stroke fastener device according to one embodiment of the present disclosure;

FIG. 2 is a top view of a multi-stroke fastening device provided in accordance with an embodiment of the present application;

FIG. 3 is a schematic view of the operation of a stroked fastening device according to one embodiment of the present disclosure;

fig. 4 is a schematic plan view of a stroke fastening device according to a second embodiment of the present application;

fig. 5 is a schematic plan view of a multi-stroke fastening device according to a third embodiment of the present application.

Icon: 100-a multi-stroke fastening device; 10-a first clamp; 11-a first via; 12-a second via; 13-a notch; 14-a first clamping portion; 15-a second latch; 20-a second clamp; 21-a first upright; 22-a second upright; 23-a first latch; 24-a second clamping portion; 30-a regulator; 200-clamped object.

Detailed Description

Embodiments of the present application will be described in detail below with reference to examples, but those skilled in the art will appreciate that the following examples are only illustrative of the present application and should not be construed as limiting the scope of the present application. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.

The following is a detailed description of a multi-stroke fixing device according to an embodiment of the present application:

the fixing device is widely applied in real life, the shape and the size of a clamped object have large difference, and different fastening devices are often required to be replaced according to the shape and the size of the clamped object in the fastening process. The existing fastening device has the disadvantages of low universality, complex structure and inflexible disassembly and assembly.

Therefore, the inventor provides a multi-stroke fastening device, which can realize the fastening of objects to be clamped with different shapes and sizes by adjusting the distance between a first clamp and a second clamp. In order to simplify the operation process of fastening or disassembling the clamped object and realize the adjustment of the distance between the first clamp and the second clamp, a notch extending to the edge of the first clamp is arranged at one of the two through holes of the first clamp, and two upright posts matched with the two through holes are arranged in the second clamp, so that the first clamp can be withdrawn from or sleeved into the corresponding upright posts along the notch, and the operation is simple. A latch is arranged on one of the upright posts, and the latch on the upright post can limit the contact position of the first clamp and the upright post; and the regulator is arranged, so that the other through hole can be limited to be far away from the second clamp along the axis direction of the upright column at the selected position of the upright column, the adjustment of the distance between the first clamp and the second clamp is realized, and clamped objects with different shapes and sizes are clamped.

Based on the structure, the multi-stroke fastening device is simple in structure, convenient to operate and convenient to clamp objects to be clamped in different shapes and sizes. A multi-stroke fastening device includes a first clamp, a second clamp, and an adjuster.

The first clamp is provided with two through holes arranged along a preset direction, wherein one through hole is provided with a notch extending to the edge of the first clamp;

the second clamp is connected with two upright posts matched with the two through holes, one of the two upright posts is matched with one of the through holes through a notch, one of the upright posts is provided with a first clamping tooth, and the first clamping tooth is used for limiting the contact position of the first clamp and one of the upright posts;

wherein the adjuster is adapted to restrict the first clamp away from the second clamp in a direction along the axis of the other upright at a selected position of the other upright.

In order to increase the contact area between the first clamp and the clamped object, facilitate the placement of the clamped object and enhance the fastening capacity of the multi-stroke fastening device, in some possible implementations, one or both of the first clamp and the second clamp are designed to be flat. Further, clamping parts are arranged in the first clamp and the second clamp, clamping areas are provided for clamped objects, contact surfaces, used for being in contact with the clamped objects, in the clamping parts are arranged to be arc-shaped concave surfaces (namely the circle centers of the arc-shaped curved surfaces are located outside the clamping parts), so that the contact area of the clamps and the clamped objects is increased, the clamped objects are prevented from inclining or sliding, and the fastening capacity of the multi-stroke fastening device is enhanced.

In some possible embodiments, one or both of the first clamp and the second clamp may be configured as a bar or a strip, but the bar or strip-shaped clamp has a small contact area with the object to be clamped, the object to be clamped is prone to tilt, and the interaction is prone to generate a large stress concentration, thereby causing abrasion or damage to the object to be clamped or the clamp. Further, in order to prevent the object to be clamped from slipping, an anti-slip structure, such as an anti-slip rubber layer, may be provided in the contact surface in the clamping portion for contacting the object to be clamped. Or the contact surface is arranged to be a plane, and the salient points are arranged in the plane to increase the skid resistance of the contact plane and the clamped object.

In order to further facilitate the detachment of the clamped object from the multi-stroke fastening device, in one possible implementation manner, the notch at the through hole extends to the edge of the first clamp along the vertical direction of the preset direction of the two through holes in the first clamp, and one end of the first clamp can be withdrawn from the upright post along the notch by rotating without taking out or lifting the other through hole from the upright post.

In some possible embodiments, the notch is arranged to extend along a predetermined direction of the two through holes in the first clamp to the edge of the first clamp. However, since the clamp and the pillar are both rigid members having a certain strength, it is difficult to withdraw the first clamp from the pillar along the notch in the case where both the through holes of the first clamp are fixed to the pillar. One of the through holes needs to be adjusted to a position sufficient for the first clamp to exit along the notch. For example, one of the through holes is lifted for a certain distance along the direction that the axis of the upright post is far away from the second clamp, so that the first clamp is relatively inclined, the length of the first clamp between the two upright posts is increased, and the first clamp can conveniently withdraw from the upright post along the notch. Correspondingly, the larger the aperture of the through hole is, the more the length of the first clamp between the two stand columns can be adjusted.

In order to increase the contact area between the second through hole and the second upright post, reduce the abrasion of the first clamp and the latch and increase the durability of the multi-stroke fixing device, in some possible implementation modes, the distance between two adjacent steps arranged at intervals in the first latch along the axial direction of the upright post is not less than the thickness of the through hole matched with the upright post in the first clamp, so that the part between the adjacent steps in the upright post can be sleeved in the corresponding through hole, and the step abrasion caused by the overlarge height of the through hole in the first clamp is avoided.

In some possible embodiments, the distance between two adjacent steps in the first latch is smaller than the height of the through hole cooperating with the pillar provided with the first latch. The distance undersize between the adjacent step, at fastening in-process, the upper and lower edge of through-hole is line contact with the edge of two adjacent steps respectively, produces too big stress concentration easily, and then wears to or damages first anchor clamps or first latch. In order to increase the adjustability of the distance between the first clamp and the second clamp, the step can be arranged to be triangular, and the inclined edge of the triangle can increase the contact position of the first clamp and the upright.

In order to further increase the adjustability of the distance between the first clamp and the second clamp, the second clamping teeth are arranged in the through holes matched with the stand columns provided with the first clamping teeth, and the contact positions of the first clamp and the stand columns are limited through the meshing between the first clamping teeth and the second clamping teeth.

In order to restrict the first clamp from moving away from the second clamp in the direction of the axis of the other upright at a selected position of the upright, an adjuster is provided. As a possible embodiment, the adjuster is a nut, and correspondingly the other upright is provided with a thread cooperating with the nut, which nut is movable in the direction of the axis of the other upright. The nut has a portion that blocks the first clamp from moving away from the second clamp, i.e., the nut has a size that is larger than the size of the corresponding through hole, including but not limited to a wing nut. As a possible embodiment, the adjuster may be provided as a clevis that can be clamped at a different position of the other column in the axial direction, the clevis having a size larger than that of the corresponding through hole to block the first clamp from moving away from the second clamp.

The multi-stroke fastening device of the present application is described in further detail below with reference to embodiments.

Example one

Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic plan view of a multi-stroke fastening device according to an embodiment of the present disclosure; FIG. 2 is a top view of a multi-stroke fastening device provided in accordance with an embodiment of the present application; fig. 3 is an operational view of a multi-stroke fastening device according to an embodiment of the present disclosure.

The multi-stroke fastening device 100 includes a first clamp 10, a second clamp 20, and an adjuster 30. The distance between the first clamp 10 and the second clamp 20 is adjustable to achieve fastening of clamped objects 200 of different shape sizes. In order to facilitate adjustment of the distance between the first jig 10 and the second jig 20 and simplify the mounting and dismounting process, the second jig 20 is provided with a first column 21 and a second column 22, the first jig 10 is provided with a first through hole 11 and a second through hole 12, and the adjustment of the distance between the first jig 10 and the second jig 20 is achieved by adjusting the position of the first through hole 11 in the axial direction of the first column 21 and the position of the second through hole 12 in the axial direction of the second column 22. And a notch 13 extending to the edge of the first clamp 10 is arranged at the first through hole 11 or the second through hole 12, the first through hole 11 is sleeved in or withdrawn from the first upright post 21 through the notch 13, or the second through hole 12 is sleeved in or withdrawn from the second upright post 22 through the notch 13. The first clamp 10 of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 and 2, in an example, the first clamp 10 has a rectangular overall shape. The shape of the first clamp 10 is not limited in the present application, and may be designed accordingly as required, and the shape of the first clamp 10 includes, but is not limited to, a bar or a rod. In the example, the first through hole 11 and the second through hole 12 are respectively arranged at two ends of the rectangular flat plate along the middle line of the rectangular flat plate in the length direction. In order to facilitate the matching of the first through hole 11 or the second through hole 12 and the first upright post 21 or the second upright post 22, the cross sections of the first through hole 11 and the second through hole 12 are elliptical, and the length direction of the ellipse is consistent with the length direction of the rectangular flat plate, so that the adjustability of the part of the first clamp 10 between the first upright post 21 and the second upright post 22 is increased, and the through hole can be conveniently withdrawn from or sleeved into the upright post along the notch 13.

This application is seted up in first through-hole 11 department or is seted up in second through-hole 12 department to breach 13, does not do the restriction, can carry out corresponding adjustment as required. In the example, the notch 13 is provided at the second pillar 22, and the notch 13 also penetrates through the upper and lower surfaces of the rectangular first clamp 10, so that the second pillar 22 can be sleeved into the second through hole 12 through the notch 13.

The extending direction of the notch 13 is not limited in this application, and can be adjusted accordingly as required. Referring to fig. 3, in an example, the notch 13 is disposed at the second through hole 12, and an extending direction of the notch 13 is perpendicular to a length direction of the rectangular flat plate, that is, extends to an edge of the rectangular flat plate along a width direction of the rectangular flat plate. In an example, the cross-sectional shapes of the notch 13 and the second through hole 12 are inverse L-shaped, and the first clamp 10 can be rotated under the condition that the first upright post 21 is sleeved into the first through hole 11, and the second through hole 12 is sleeved into or withdrawn from the second upright post 22 through the notch 13, so that the object 200 to be clamped can be mounted or dismounted in the multi-stroke fastening device.

In a possible implementation, in order to further facilitate the insertion or extraction of the second through hole 12 into or out of the second pillar 22, the extending path of the notch 13 may be configured in an arc shape to accommodate the rotation of the first clamp 10. Or, the notch 13 extends to the edge of the rectangular flat plate along the length direction of the rectangular flat plate, in this implementation manner, when the object 200 to be clamped is to be disassembled from the multi-stroke fastening device 100, the end of the first clamp 10 where the first through hole 11 is located needs to be lifted to a certain height along the first column axis direction to increase the length of the portion of the first clamp 10 between the first column 21 and the second column 22, and then the second through hole 12 is withdrawn from the second column 22 through the notch 13, so as to realize the disassembly of the object 200 to be clamped from the multi-stroke fastening device 100. In order to further increase the length of the portion of the first clamp 10 between the first pillar 21 and the second pillar 22, the length of the first through hole 11 or the second through hole 12 in the length direction of the rectangular flat plate may be appropriately extended.

Since the first clamp 10 is used to fasten the object 200 to be clamped in cooperation with the second clamp 20, the first clamp 10 needs to have sufficient strength and to have the first clamping portion 14 for fastening the object 200 to be clamped. Referring to fig. 1, the first clamping portion 14 is shown as being integral with the first fixture 10. The contact surface of the first clamping portion 14 for contacting the object 200 to be clamped is an arc-shaped concave surface (i.e. the center of the arc-shaped curved surface is located outside the first clamping portion 14).

The shape of the first clamping portion 14 can be designed accordingly as required, and the first clamping portion 14 can be detachably mounted in the first fixture 10, which is not limited in this application. For example, the first clamping portion 14 may be composed of different contact blocks having contact surfaces with specific shapes and sizes, and in order to better fasten the clamped objects 200 with different shapes and sizes, the corresponding contact blocks may be replaced and mounted on the first clamp 10 when clamping the clamped objects 200 with different shapes and sizes. The installation mode can be through screw connection etc. and this application is not restricted.

The second clamp 20 is described in detail below with reference to fig. 1.

The second clamp 20 is connected with a first upright post 21 and a second upright post 22, the positions of the first upright post 21 and the second upright post 22 correspond to the positions of the first through hole 11 and the second through hole 12 in the first clamp 10, that is, the first upright post 21 can be sleeved into the first through hole 11 and the second upright post 22 can be sleeved into the second through hole 12.

In the example, the second fixture 20 is rectangular, the shape of the second fixture 20 is not limited in this application, and may be designed accordingly as required, and the shape of the second fixture 20 includes, but is not limited to, a bar or a rod. The first upright post 21 and the second upright post 22 are positioned at two ends of the rectangular flat plate and are integrated with the second clamp 20, and the cross section of the whole is in a concave shape. The application does not limit the connection mode between the first upright post 21 and the second upright post 22 and the second clamp 20, the first upright post 21 and the second upright post 22 can be separated from the second clamp 20, and the first upright post 21 and the second upright post 22 can be connected with the second clamp 20 through connection modes such as screws.

The second upright post 22 is provided with a first latch 23 along the axial direction of the second upright post 22, and the first latch 23 is composed of a plurality of triangular steps arranged at intervals along the axial direction of the second upright post. The first latch 23 can limit the contact position of the second through hole 12 in the first clamp 10 with the second pillar 22. The hypotenuse with a certain angle of inclination in the triangular step can increase the adjustability of the distance between the first clamp 10 and the second clamp 20 (the first clamp 10 can be tilted up or down a certain angle along the hypotenuse).

In the example, the distance between two adjacent triangular steps in the first latch 23 is equal to the height of the second through hole 12, and the end of the first clamp 10 where the second through hole 12 is located is clamped between the two adjacent triangular steps, so as to reduce the wear of the first clamp 10 and the first latch 23.

The shape and size of the first latch 23 are not limited by the application, and the first latch can be correspondingly adjusted according to the requirement.

The second clamp 20 needs to have sufficient strength and needs to have a second clamping portion 24 for fastening the object 200 to be clamped. The first clamping portion 14 and the second clamping portion 24 together form an accommodating space for the object 200 to be clamped. Like the first clamping portion 14, the shape and connection manner of the second clamping portion 24 are not limited in this application, and can be adjusted accordingly as needed. In the example, the contact surface of the second clamping portion 24 for contacting the object 200 to be clamped is an arc-shaped concave surface (i.e., the center of the arc-shaped curved surface is located outside the second clamping portion 24).

The first latch 23 can limit the contact position of the second through hole 12 in the first clamp 10 with the second pillar 22, and in order to adjust the distance between the first clamp 10 and the second clamp 20, an adjuster 30 is further provided. The adjuster 30 can cooperate with the first pillar 21 to adjust a contact position where the first through hole 11 in the first jig 10 contacts the first pillar 21, thereby achieving adjustment of the distance between the first jig 10 and the second jig 20.

The adjuster 30 needs to have a blocking portion capable of blocking the movement of the first through hole 11 in the direction of the axis of the first pillar 21 away from the second jig and moving in the direction of the axis of the first pillar 21, restricting the contact position of the first through hole 11 with the first pillar 21. In the example, the adjuster 30 is a wing nut and the first upright 21 is provided with a thread cooperating with the wing nut. In the example, the width of the wing nut is greater than the width of the first through hole 11, blocking the movement of the first through hole 11 along the axis of the first upright 21 away from the second clamp.

Example two

Referring to fig. 4, a multi-stroke fastening device 100 according to a second embodiment of the present disclosure is different from the first embodiment in that a distance between adjacent steps of the first latch 23 is smaller than a height of the first through hole 11.

In the example, the first latch 23 is disposed on the outer side of the second pillar 22 (the side opposite to the first pillar 21 is the inner side, and the side opposite to the inner side is the outer side, and in the example, the rightmost side of the second pillar 22), and the cross-sectional shape of the first latch 23 is a zigzag shape continuously disposed. The second through hole 12 contacts with edges of two adjacent saw teeth, and the edges of two adjacent saw teeth limit the contact position of the second through hole 12 with the second pillar 22. The hypotenuse of the saw-tooth shape can increase the adjustability of the distance between the first clamp and the second clamp.

EXAMPLE III

Referring to fig. 5, a third embodiment of the present application provides a multi-stroke fastening device 100, which is different from the second embodiment in that a second latch 15 engaged with the first latch 23 is disposed in the second through hole 12.

In the example, the first latch 23 has trapezoidal steps continuously arranged along the axial direction of the second pillar 22, and a triangular recess is formed between two adjacent trapezoidal steps. The cross-sectional shape of the second latch 15 is a triangular step fitted with the triangular recess. The triangular step in the second latch 15 engages with the recess in the first latch 23, limiting the contact position of the second through-hole 12 with the second stud 22.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A multi-stroke fastening device, comprising:

the first clamp is provided with two through holes arranged along a preset direction, wherein one through hole is provided with a notch extending to the edge of the first clamp;

the second clamp is connected with two upright posts matched with the two through holes, one of the two upright posts is matched with one of the through holes through the notch, one of the upright posts is provided with a first clamping tooth, and the first clamping tooth is used for limiting the contact position of the first clamp and the one of the upright posts;

an adjuster for restricting the first clamp from moving away from the second clamp in the direction of the axis of the other upright at a selected position of the other upright.

2. The multi-stroke fastening device of claim 1 wherein a second latch is disposed in the through hole that mates with the one of the posts, the first latch engaging the second latch.

3. The multi-stroke fastening device according to claim 1, wherein the first latch has at least two steps spaced apart in the axial direction of the one of the posts, and the distance between adjacent steps is not less than the height of the through hole engaged with the one of the posts.

4. A multi-stroke fastening device according to claim 3 wherein said indentation is provided at said through hole cooperating with said one of said posts.

5. A multi-stroke fastening device according to any of claims 2 to 4 wherein the first clamp is in the form of a plate.

6. A multi-stroke fastening device according to any of claims 2 to 4 wherein the second clamp is in the form of a plate.

7. The multi-stroke fastening device according to claim 1, wherein the first clamp is provided with a first clamping portion having a first contact surface for contacting an object to be clamped, the first contact surface being an arc-shaped surface.

8. The multi-stroke fastening device according to claim 1, wherein the second clamp is provided with a second clamping portion having a second contact surface for contacting an object to be clamped, the second contact surface being an arc-shaped surface.

9. A multi-stroke fastening device according to claim 7 or 8 wherein the notch extends in a direction perpendicular to the predetermined direction to the first clamp edge.

10. The multi-stroke fastening device as claimed in claim 1, wherein the adjuster is a wing nut and the other post is provided with a thread cooperating with the wing nut.

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