CN110625830A - A masonry chisel sheath, masonry chisel and quick disassembly method thereof - Google Patents

Abstract

The invention relates to a masonry chisel sheath, a masonry chisel and a quick disassembly method thereof. The masonry chisel sheath includes a hand guard and a handle. The hand guard is installed on the handle. The handle has a mounting hole for inserting a masonry chisel rod. It is two, divided into a left half handle and a right half handle, and the left half handle and the right half handle are connected together by a fastening sleeve to form a handle. The masonry chisel includes a masonry chisel shaft. The lower end of the masonry chisel shaft is provided with a chisel head, and the upper end of the masonry chisel shaft is equipped with the above-mentioned masonry chisel sheath; the masonry chisel shaft is processed with a circle of concave positioning grooves along its circumference; The left half of the mounting hole is provided with a positioning protrusion that matches the concave positioning groove and plays an axial positioning role for the masonry chisel rod. The invention realizes the rapid disassembly and replacement of the masonry chisel sheath and the masonry chisel rod. From the user's point of view, all masonry chisels with the same shape of the masonry chisel rods only need to be equipped with one masonry chisel sheath, which saves costs.

Description

A masonry chisel sheath, masonry chisel and quick disassembly method thereof

technical field

The invention relates to the field of hardware tools, in particular to a masonry chisel sheath, a masonry chisel and a quick disassembly method thereof.

Background technique

Masonry chisel is a kind of hand tool widely used in stone mining and other construction fields. It is used to strike stones with the cooperation of a hammer. In the process of use, it is generally necessary to hold the masonry chisel by hand. In order to prevent it from hitting the hand A masonry chisel sheath is often installed on the upper part of the chisel handle of the masonry chisel, which has a certain protective effect on the hands of the workers. For example, a patent with the authorized announcement number of CN206614700U discloses a multifunctional masonry chisel for construction. The masonry chisel The chisel includes a handle, a hand guard, a metal chisel rod and a chisel head. The handle is mounted on the metal chisel rod and the two are often not easy to separate. The detachable replacement design of the chisel head and the metal chisel rod in this patent meets the convenience of replacing the chisel head to realize processing of different materials, but the connection strength between the chisel head and the metal chisel rod is often not guaranteed, which affects the normal operation of the masonry chisel use.

Therefore, it is necessary to improve and optimize existing masonry chisels.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and to provide a masonry chisel sheath with a reasonable structural design, a masonry chisel sheath and a masonry chisel rod that can be quickly disassembled and replaced, and a masonry chisel sheath installed with the masonry chisel sheath The masonry chisel and the quick disassembly and assembly method of the masonry chisel are given.

The technical solution adopted by the present invention to solve the above problems is: a masonry chisel sheath, which is used to be installed on a masonry chisel rod, which includes a hand guard and a handle, the hand guard is installed on the handle, and the handle has The installation hole for inserting the chisel rod is characterized in that: the handle is divided into two parts, a left half handle and a right half handle, and the left half handle and the right half handle are connected together by a fastening sleeve to form a handle.

Preferably, there is a through hole in the center of the hand guard for inserting one end of the handle, the hand guard is installed on the left half handle, and the hand guard and the left half handle are integrally formed.

Preferably, the cross-section of the mounting hole is regular hexagonal or circular, the left half handle and the right half handle are separated by the cross section passing through the central axis of the mounting hole, and the left half handle has a left half mounting hole , the right half handle has the right half mounting hole.

Preferably, both sides of the left half handle are provided with card slots, and both sides of the right half handle are provided with raised blocks. When the left half handle and the right half handle are combined together , the clamping block fits into the card slot, and the clamping block abuts against one end surface of the card slot.

Preferably, external threads are provided on the outer surfaces of one end of the left half handle and the right half handle, and the tightening sleeve has internal threads matching the external threads, and the left half handle and the right half handle are connected by threaded connection together to form a handle.

Preferably, a layer of soft rubber is provided on the outer surfaces of the left half handle and the right half handle, and the soft rubber layer is provided with anti-slip grooves, and the soft rubber layer can play a certain role in buffering and shock absorption.

Preferably, the hand guard, the left half handle, the right half handle and the fastening sleeve are made of plastic, such as PP, PE, TPR, nylon, etc., which reduces the cost.

The present invention also provides another technical solution: a masonry chisel, comprising a masonry chisel rod, the lower end of the masonry chisel rod is provided with a chisel head, and the feature is that the above-mentioned masonry chisel sheath is installed on the upper end of the masonry chisel rod; A ring of concave positioning grooves is processed on the masonry chisel rod along its circumference; the left half mounting hole of the left half handle is provided with a positioning groove that matches the concave positioning groove and plays an axial positioning role for the masonry chisel rod. raised.

Preferably, the concave positioning groove is a circular groove, and the positioning protrusion is a semicircular protrusion.

The present invention also provides a quick disassembly and assembly method for masonry chisels, including installation methods and disassembly methods, because there are many types of chisel heads, and their corresponding lengths are different. The quick disassembly method is different when the inner diameter is different.

When the width of the chisel head is larger than the inner diameter of the clamping sleeve, the installation method of the masonry chisel is as follows: firstly, the clamping sleeve is put on the masonry chisel rod from the upper end of the masonry chisel rod; then the upper part of the masonry chisel rod is placed on the left half of the handle Then insert the upper end of the right half of the handle into the through hole in the center of the hand guard, and push the right half of the handle upward until the block is against the On one end face of the card slot, the right half handle moves into place at this time; then through threaded connection, the left half handle and the right half handle are fastened together with a fastening sleeve, and the masonry chisel rod is tightly fixed on the left half handle and the right half handle.

When the width of the chisel head is larger than the inner diameter of the clamping sleeve, the disassembly method of the masonry chisel is as follows: first, unscrew the clamping sleeve from the left half handle and the right half handle, hang it on the masonry chisel rod; then push the right half handle down Handle, remove the right half handle after releasing the restriction of the through hole at the center of the hand guard to the right half handle and the restriction of the card slot to the block; then remove the left half handle, and finally remove the fastening sleeve from the masonry chisel rod Up and down.

When the width of the chisel head is smaller than the inner diameter of the fastening sleeve, the installation method of the masonry chisel is as follows: first, place the upper part of the masonry chisel rod in the left half installation hole of the left half handle, and make the inner concave positioning groove snap onto the positioning protrusion ;Then insert the upper end of the right half handle into the through hole in the center of the hand guard, and push the right half handle upward until the block is against one end of the card slot, at this time the right half handle moves into place; finally tighten the The set is threaded on the masonry chisel rod from the chisel head end of the masonry chisel rod, connected by threads, and the left half handle and the right half handle are fastened together by the fastening sleeve, while the masonry chisel rod is tightly fixed on the left half handle. Between the handle and the right half of the handle.

When the width of the chisel head is smaller than the inner diameter of the fastening sleeve, the removal method of the masonry chisel is as follows: first, unscrew the fastening sleeve from the left half handle and the right half handle, and remove the fastening sleeve; then push the right half handle down, After releasing the restriction of the through hole at the center of the hand guard to the right half of the handle and the restriction of the card slot to the block, remove the right half of the handle; finally remove the left half of the handle.

Compared with the prior art, the present invention has the following advantages and effects:

1. The masonry chisel sheath in the present invention is especially suitable for masonry chisels with the same shape of masonry chisel rods but different types of chisel heads. It realizes the rapid disassembly and replacement of masonry chisel sheaths and masonry chisel rods. From the perspective of users, All masonry chisels with the same chisel shaft shape need only be equipped with one masonry chisel sheath, saving costs;

2. The handle in the present invention is divided into two, divided into the left half handle and the right half handle, which breaks the integral design of the traditional handle, realizes the rapid replacement of the masonry chisel rod, and designs the left half handle and the hand guard as One-piece molding, on the one hand, from the perspective of saving processing and manufacturing costs, the cost is reduced. Only one set of molds is required for the left half handle and hand guard. On the other hand, it is not necessary to position and install the hand guard each time when performing quick replacement. ;

3. In the present invention, card slots are provided on both sides of the left half handle, and raised blocks are provided on both sides of the right half handle. When the left half handle and the right half handle are combined together, the card will The block fits into the card slot, and the block abuts against one end surface of the slot. The slot and the block ensure that the right half handle and the left half handle fit together well, and the right half handle and the left half handle Whether there is no misalignment of the handle in the axial direction is determined by the block abutting against one end face of the slot, which is convenient for users to use;

4. In the present invention, a circle of concave positioning grooves is machined on the masonry chisel rod along its circumference. The concave positioning grooves are circular grooves, which can be processed by milling and turning. The processing is convenient and simple. There is a positioning protrusion that matches the inner concave positioning groove and plays an axial positioning role for the masonry chisel rod. The positioning protrusion and the inner concave positioning groove ensure the axial positioning of the masonry chisel rod, and the structural design is reasonable and simple;

5. The quick disassembly and assembly method of the masonry chisel in the present invention has the advantages of saving time and effort, being quick and convenient.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present invention or the solutions in the prior art, the accompanying drawings that need to be used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description These are some implementations of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative work.

Fig. 1 is a three-dimensional structural schematic diagram of a masonry chisel in an embodiment of the present invention (the chisel head is not shown).

Fig. 2 is a schematic diagram of an exploded structure of a masonry chisel sheath in an embodiment of the present invention.

Fig. 3 is a schematic perspective view of the left half handle in the embodiment of the present invention.

Fig. 4 is another perspective view of the left half handle in the embodiment of the present invention.

Fig. 5 is a front structural schematic view of the left half handle in the embodiment of the present invention.

Fig. 6 is a right view structural diagram of the left half handle in the embodiment of the present invention.

Fig. 7 is a schematic perspective view of the right half handle in the embodiment of the present invention.

Fig. 8 is a front structural schematic diagram of the right half handle in the embodiment of the present invention.

Fig. 9 is a schematic top view of the right half handle in the embodiment of the present invention.

Fig. 10 is a right view structural diagram of the right half handle in the embodiment of the present invention.

Fig. 11 is a front structural schematic diagram of a masonry chisel rod in an embodiment of the present invention.

Explanation of reference signs:

Masonry chisel sheath A; hand guard 1; handle 2; fastening sleeve 3; masonry chisel rod 4;

Mounting hole 21; left half handle 22; right half handle 23; external thread 24; soft rubber layer 25; anti-skid groove 26;

Card slot 221; left half mounting hole 222; positioning protrusion 223;

Block 231; right half mounting hole 232;

The concave positioning groove 41.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.

Example.

See Figures 1 through 11.

This embodiment discloses a masonry chisel, which includes a masonry chisel rod 4. The lower end of the masonry chisel rod 4 is provided with a chisel head (not shown in the schematic diagram), and a masonry chisel sheath A is installed on the upper end of the masonry chisel rod 4. For the structural strength of the chisel bar 4, the masonry chisel bar 4 is designed in the shape of a hexagonal prism. The model of chisel head has multiple, can refer to prior art.

In this embodiment, the masonry chisel sheath A includes a hand guard 1 and a handle 2. The hand guard 1 is installed on the handle 2. The handle 2 has a mounting hole 21 for inserting the masonry chisel rod 4. 4 are matched, so the cross section of the mounting hole 21 is a regular hexagon. Handle 2 is divided into two, is divided into left half handle 22 and right half handle 23, and left half handle 22 and right half handle 23 are connected together by a fastening sleeve 3 and form handle 2. Specifically, the left half-handle 22 and the right half-handle 23 are formed by separating the handle 2 by cross-sections passing through the central axis of the mounting hole 21, the left half-handle 22 has a left half-mounting hole 222, and the right half-handle 23 has a right half-mounting hole 232.

In this embodiment, the hand guard 1 , the left half handle 22 , the right half handle 23 and the fastening sleeve 3 are made of plastic, such as PP, PE, TPR, nylon, etc., which reduces the cost. The outer surface of the left half handle 22 and the right half handle 23 is provided with a layer of soft rubber layer 25, and the soft rubber layer 25 is provided with an anti-skid groove 26, and the soft rubber layer 25 can play a certain buffering and shock-absorbing effect.

In this embodiment, the center of the hand guard 1 has a through hole 11 through which one end of the handle 2 can be inserted. The hand guard 1 is installed on the left half handle 22 , and the hand guard 1 and the left half handle 22 are integrally formed. Both sides of the left half handle 22 are provided with draw-in grooves 221, and both sides of the right half handle 23 are provided with raised blocks 231. When the left half handle 22 and the right half handle 23 are combined together, The locking block 231 fits into the locking slot 221 , and the locking block 231 abuts against an end surface of the locking slot 221 .

In this embodiment, external threads 24 are provided on the outer surfaces of one end of the left half handle 22 and the right half handle 23, and the tightening sleeve 3 has internal threads that match the external threads 24, and the left half handle 22 and the The right half handles 23 are connected together to form the handle 2 .

In this embodiment, a circle of concave positioning groove 41 is processed on the masonry chisel rod 4 along its circumference; The positioning protrusion 223 plays an axial positioning role. The concave positioning groove 41 is a circular groove, which can be processed by milling and turning, and the processing is convenient and simple. Correspondingly, the positioning protrusion 223 is a semicircular protrusion. The positioning protrusion 223 and the concave positioning groove 41 ensure the axial positioning of the masonry chisel rod 4, and the structural design is reasonable and simple.

Also disclosed in this embodiment is a quick disassembly method for masonry chisels, including installation methods and disassembly methods, because there are multiple types of chisel heads, and their corresponding lengths are different. When the width of the chisel head is greater than the inner diameter of the clamping sleeve 3 and less than The method of quick disassembly when tightening the inner diameter of the sleeve 3 is different.

When the width of the chisel head is greater than the inner diameter of the clamping sleeve 3, the installation method of the masonry chisel is as follows: firstly, the clamping sleeve 3 is put on the masonry chisel rod 4 from the upper end of the masonry chisel rod 4; Place it in the left half mounting hole 222 of the left half handle 22, and make the concave positioning groove 41 snap onto the positioning protrusion 223; then insert the upper end of the right half handle 23 into the through hole 11 at the center of the hand guard 1, and Push up the right half handle 23 until the block 231 abuts against one end face of the slot 221, at this time the right half handle 23 moves into place; then connect the left half handle 22 and the right half handle with the fastening sleeve 3 through threaded connection. 23 are fastened together, while the masonry chisel rod 4 is tightly fixed between the left half handle 22 and the right half handle 23.

When the width of the chisel head is greater than the inner diameter of the fastening sleeve 3, the dismounting method of the masonry chisel is as follows: first, the fastening sleeve 3 is unscrewed from the left half handle 22 and the right half handle 23, and hung on the masonry chisel rod 4; then Push down the right half handle 23, remove the restriction of the right half handle 23 by the through hole 11 at the center of the hand guard 1 and the restriction of the card slot 221 on the block 231, and remove the right half handle 23; then remove the left half handle 22 is unloaded, and fastening sleeve 3 is taken off from masonry chisel bar 4 at last.

When the width of the chisel head is smaller than the inner diameter of the fastening sleeve 3, the installation method of the masonry chisel is as follows: firstly, the upper part of the masonry chisel rod 4 is placed in the left half mounting hole 222 of the left half handle 22, and the inner concave positioning groove 41 is engaged. onto the positioning protrusion 223; then insert the upper end of the right half handle 23 into the through hole 11 at the center of the hand guard 1, and push the right half handle 23 upward until the block 231 abuts against one end surface of the slot 221, At this time, the right half handle 23 is moved into place; finally, the fastening sleeve 3 is put on the masonry chisel rod 4 from the chisel head end of the masonry chisel rod 4, and through threaded connection, the left half handle 22 and the right half handle are connected by the fastening sleeve 3. The handles 23 are fastened together, while the masonry chisel rod 4 is tightly fixed between the left half handle 22 and the right half handle 23 .

When the width of the chisel head is smaller than the inner diameter of the fastening sleeve 3, the removal method of the masonry chisel is as follows: first, the fastening sleeve 3 is unscrewed from the left half handle 22 and the right half handle 23, and the fastening sleeve 3 is removed; Push the right half handle 23, release the restriction of the through hole 11 at the center of the hand guard 1 to the right half handle 23 and the restriction of the card slot 221 to the block 231, then remove the right half handle 23; finally remove the left half handle 22 Down.

In this embodiment, the masonry chisel sheath A is especially suitable for masonry chisels with the same shape of the masonry chisel rod 4 but with different types of chisel heads, and realizes the quick disassembly and replacement of the masonry chisel sheath A and the masonry chisel rod 4. From the user's point of view Generally speaking, all masonry chisels with the same shape of the masonry chisel rods 4 only need to be equipped with one masonry chisel sheath A, which saves costs.

In this embodiment, the handle 2 is divided into two parts, the left half handle 22 and the right half handle 23, which breaks the integral design of the traditional handle and realizes the rapid replacement of the masonry chisel rod 4, and the left half handle 22 and the right half handle The hand guard 1 is designed to be integrally formed. On the one hand, the cost is reduced from the perspective of saving processing and manufacturing costs. The left half handle 22 and the hand guard 1 only need one set of molds. Position and install the finger guard 1.

In this embodiment, both side sections of the left half handle 22 are provided with card slots 221, and both side sections of the right half handle 23 are provided with raised blocks 231, when the left half handle 22 and the right half handle 23 When combined together, the clamping block 231 fits into the clamping slot 221, and the clamping block 231 abuts against one end surface of the clamping slot 221. The clamping slot and the clamping block ensure that the right half handle 23 and the left half handle 22 are well Fitting together, and the fact that the right half handle 23 and the left half handle 22 are not misaligned in the axial direction is determined by the fact that the block 231 abuts against one end surface of the slot 221 , which is convenient for users to use.

Although the present invention has been disclosed as above with the embodiments, it is not intended to limit the scope of protection of the present invention. Any changes and modifications made by those skilled in the art without departing from the concept and scope of the present invention shall be Belong to the protection scope of the present invention.

Claims (10)

1. A masonry chisel sheath for mounting on a masonry chisel shaft, comprising a finger guard (1) and a handle (2), said finger guard (1) being mounted on said handle (2), said handle (2) having a mounting hole (21) for insertion of a masonry chisel shaft, characterized in that: the handle (2) is divided into a left half handle (22) and a right half handle (23), and the left half handle (22) and the right half handle (23) are connected together by a fastening sleeve (3) to form the handle (2).

2. A masonry chisel sheath as defined in claim 1, wherein: the center department of fingerguard (1) leaves through-hole (11) that enable handle (2) one end male, fingerguard (1) is installed on half left handle (22), fingerguard (1) and half left handle (22) integrated into one piece.

3. A masonry chisel sheath as defined in claim 1, wherein: the cross section of mounting hole (21) is regular hexagon or circular, left half handle (22) and right half handle (23) are formed with handle (2) separation by the cross-section of crossing mounting hole (21) axis, and left half handle (22) has left half mounting hole (222), and right half handle (23) has right half mounting hole (232).

4. A masonry chisel sheath as defined in claim 3, wherein: the clamping grooves (221) are formed in the sections of the two sides of the left half handle (22), the protruding clamping blocks (231) are arranged in the sections of the two sides of the right half handle (23), when the left half handle (22) and the right half handle (23) are combined together, the clamping blocks (231) are clamped into the clamping grooves (221) in a matched mode, and the clamping blocks (231) abut against one end face of the clamping grooves (221).

5. A masonry chisel sheath as defined in claim 1, wherein: all be provided with external screw thread (24) on the one end lateral surface of half handle (22) on a left side and half handle (23) on a right side, adapter sleeve (3) have with external screw thread (24) assorted internal thread, utilize threaded connection to link together half handle (22) on a left side and half handle (23) on a right side and constitute handle (2).

6. A masonry chisel sheath as defined in claim 1, wherein: all set up one deck soft glue film (25) on the lateral surface of half handle (22) on the left side and half handle (23) on the right side, be provided with on soft glue film (25) anti-skidding groove (26).

7. A masonry chisel sheath as defined in claim 1, wherein: the hand guard plate (1), the left half handle (22), the right half handle (23) and the fastening sleeve (3) are made of plastics.

8. The utility model provides a stonework chisel, includes stonework chisel pole (4), the lower extreme of stonework chisel pole (4) is provided with chisel head, its characterized in that: a masonry chisel sheath according to any one of claims 1-7 is mounted on the upper end of the masonry chisel rod (4); a circle of concave positioning grooves (41) are machined in the chiseling rod (4) along the circumferential direction of the chiseling rod; and a positioning bulge (223) which is matched with the concave positioning groove (41) and plays an axial positioning role in the chiseling rod (4) of the stonework is arranged in the left half mounting hole (222) of the left half handle (22).

9. A masonry chisel according to claim 8, characterised in that: the concave positioning groove (41) is a circular groove, and the positioning bulge (223) is a semicircular bulge.

10. A method of quickly disassembling a masonry chisel according to any one of claims 8-9 including a method of installation and a method of disassembly, wherein:

when the width of the chisel head is larger than the inner diameter of the fastening sleeve (3),

the mounting method of the stonechip chisel comprises the following steps: firstly, a fastening sleeve (3) is sleeved on a stonemason chisel rod (4) from the upper end of the stonemason chisel rod (4) in a penetrating way; then, the upper part of the stonework chisel rod (4) is placed in the left half mounting hole (222) of the left half handle (22), and the concave positioning groove (41) is clamped on the positioning bulge (223); then, inserting the upper end of the right half handle (23) into a through hole (11) in the center of the hand guard plate (1), and pushing the right half handle (23) upwards until the clamping block (231) abuts against one end face of the clamping groove (221), and then moving the right half handle (23) in place; then, the left half handle (22) and the right half handle (23) are fastened together by the fastening sleeve (3) through screw connection, and the stonework chisel rod (4) is tightly fixed between the left half handle (22) and the right half handle (23);

the method for disassembling the stonechip chisel comprises the following steps: firstly, screwing down the fastening sleeve (3) from the left half handle (22) and the right half handle (23) and hanging the fastening sleeve on a chiseling rod (4) of a stonemason; then the right half handle (23) is pushed downwards, and after the limitation of the through hole (11) in the center of the hand guard plate (1) on the right half handle (23) and the limitation of the clamping groove (221) on the clamping block (231) are released, the right half handle (23) is detached; then the left half handle (22) is detached, and finally the fastening sleeve (3) is taken down from the stonemason chisel rod (4);

when the width of the chisel head is smaller than the inner diameter of the fastening sleeve (3),

the mounting method of the stonechip chisel comprises the following steps: firstly, the upper part of a chiseling rod (4) for stonework is placed in a left half mounting hole (222) of a left half handle (22), and an inwards concave positioning groove (41) is clamped on a positioning bulge (223); then inserting the upper end of the right half handle (23) into a through hole (11) in the center of the hand guard plate (1), and pushing the right half handle (23) upwards until the clamping block (231) abuts against one end face of the clamping groove (221), and then moving the right half handle (23) in place; finally, the fastening sleeve (3) is sleeved on the stone chisel rod (4) in a penetrating manner from the chisel head end of the stone chisel rod (4), the left half handle (22) and the right half handle (23) are fastened together by the fastening sleeve (3) through threaded connection, and the stone chisel rod (4) is tightly fixed between the left half handle (22) and the right half handle (23);

the method for disassembling the stonechip chisel comprises the following steps: firstly, screwing down the fastening sleeve (3) from the left half handle (22) and the right half handle (23), and detaching the fastening sleeve (3); then the right half handle (23) is pushed downwards, and after the limitation of the through hole (11) in the center of the hand guard plate (1) on the right half handle (23) and the limitation of the clamping groove (221) on the clamping block (231) are released, the right half handle (23) is detached; finally, the left half handle (22) is detached.