阅读说明：本技术 换头扳手 (Head-changing wrench ) 是由 孙艳 于 2019-09-23 设计创作，主要内容包括：换头扳手,其特征在于：包括座柄、滑柄,扳头块,所述滑柄滑动安装在座柄的槽板内,所述扳头块在所述滑柄的单个凹槽与座柄的换头座凹槽定位重合时,可移动换位分别内置上凹槽或下凹槽内,本发明的座柄与滑柄插合一体,构成扳手整体结构；多个扳头块置放在滑柄内不易丢失；滑柄与座柄定位更换扳头操作方便,座柄顶端的换头座连接牢固使用安全。(Trades first spanner, its characterized in that: the wrench comprises a seat handle, a sliding handle and a wrench block, wherein the sliding handle is slidably arranged in a groove plate of the seat handle, and the wrench block can be movably transposed and respectively arranged in an upper groove or a lower groove when a single groove of the sliding handle is positioned and superposed with a head-changing seat groove of the seat handle; a plurality of wrench head blocks are arranged in the sliding handle and are not easy to lose; the sliding handle and the seat handle are positioned to replace the wrench head, so that the operation is convenient, and the head replacing seat at the top end of the seat handle is firm in connection and safe to use.)

1. Trades first spanner, its characterized in that: the sliding handle is slidably mounted in a groove plate of the seat handle, and the wrench block can be replaced and respectively arranged in a sliding handle groove or a seat handle groove when a single groove of the sliding handle is coincident with a head replacing seat groove of the seat handle in positioning.

2. The wrench of claim 1, wherein: the open end of the slot plate of the seat handle is fixedly connected with the upper plane of the seat changing seat and is provided with a reinforcing support, and the corresponding surfaces of the two side wings of the slot plate are provided with clamping pieces.

3. The wrench of claim 2, wherein: the tube column-shaped head changing seat is internally provided with a multi-square groove, and the upper edge of the groove and the upper plane of the built-in wrench block are not higher than the inner bottom surface of the groove plate.

4. The wrench of claim 1, wherein: the shape, size and length of the sliding handle correspond to the inner space of the seat handle groove plate, the sliding handle is folded in the seat handle groove plate, the front end pressing part is positioned at the opening of the seat handle, and the vertical surface is flush with the vertical surface of the head changing seat; a plurality of lower opening grooves are arranged in the rear end groove box plate.

5. The wrench of claim 1, wherein: the shape, the size and the seat direction of the single groove of the sliding handle correspond to those of the groove of the seat handle changing seat, the single groove and the groove can slide to be respectively superposed and positioned, and a square or round through hole is arranged in the middle of the bottom of the groove.

6. the wrench of claim 4 or 5, wherein: the through holes of the grooves of the seat handle and the sliding handle are smaller than the outer diameter of the wrench block, and the through hole of the pressing part of the sliding handle is larger than the sleeve opening of the wrench block; the bottom surface of the groove is magnetic, or the vertical surface of the chute groove is provided with a clamping piece.

7. The wrench of claim 1, wherein: the shape of the multi-square wrench head block corresponds to the inner spaces of the multi-square grooves of the seat handle and the sliding handle, a vertical fixed model sleeve opening of a single wrench head block corresponds to the outer diameter of a screwed model screw cap, the multiple wrench head blocks are clamped or adsorbed in the lower opening groove of the sliding handle according to models, and the upper surface of the sliding handle is provided with positioning and model marks.

8. The wrench of claim 1, wherein: the bottom surface of the wrench head block is provided with a boss corresponding to the through hole of the head changing seat groove, the boss is flush with the bottom surface of the head changing seat in the head changing seat groove in the wrench head block.

9. A wrench as claimed in either one of claims 2 or 6, wherein: the clamping piece on the vertical surface of the groove is an elastic clamping bead or an elastic piece; the clamping piece of the groove plate is a folded edge or a clamping strip.

10. The wrench of claim 1, wherein: the seat handle, the sliding handle and the wrench head block are made of hard metal materials.

Technical Field

The invention belongs to the field of hand tools, and particularly relates to a wrench with a replaceable wrench head.

Background

The existing set of wrench has various models, can carry out screwing operation aiming at screws of different models, but needs to carry a plurality of wrenches when in use, is difficult to store and easily lost, the set of wrench is only different in size and model of wrench heads, the rod bodies are the same, the cost is increased when the set of wrench is purchased, and the innovation of a wrench with a changeable head is also provided in the prior art, for example, the wrench device with the changeable head (application number 201310466484.4) of the national invention patent adopts a mode that a cavity body at one end of a wrench handle is inserted into the wrench head, so that the wrench heads of various models are changed, but the wrench heads and the handle are separated to be stored and still easily lost, the part for changing the wrench head is arranged at the end part, the wrench head and the handle are not firmly.

Disclosure of Invention

The invention adopts the following technical scheme:

The technical effect is achieved.

The seat handle and the sliding handle are inserted into a whole to form the integral structure of the wrench; a plurality of wrench head blocks are arranged in the sliding handle and are not easy to lose; the sliding handle and the seat handle are positioned to replace the wrench head, so that the operation is convenient, and the head replacing seat at the top end of the seat handle is firm in connection and safe to use.

Drawings

Fig. 1 is a three-dimensional structure view of the upper plate surface of the slide bar of the present invention.

Fig. 2 is a perspective view of the lower bottom surface of the slide bar of the present invention.

Fig. 3 is a schematic perspective view of the seat handle of the present invention.

Fig. 4 is a perspective view of the slide bar and seat bar of the present invention.

FIG. 5 is a perspective view of the replacement wrench head block with the sliding handle and the seat handle dislocated according to the present invention.

Fig. 6 is a perspective view of the wrench head block according to the present invention.

Fig. 7 is a three-dimensional structure view of the seat handle head-changing seat of the invention.

FIG. 8 is a front view of the slide bar, seat bar and wrench head block installed in a staggered manner.

Reference numerals

The wrench comprises a seat handle 1, a groove plate 11, an opening 111, a head-changing seat 12, a groove 121, a clamping piece 122, a through hole 123, a reinforcing support 124, a sliding handle 2, a pressing part 213, a groove box plate 22, a groove bottom 221, a clamping piece 222, a wrench head block 3, a sleeve opening 31, a boss 32, a screw cap 4 and a screw rod 41.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings.

As shown in FIG. 5, the invention comprises a seat handle 1, a sliding handle 2 and a wrench head block 3;

1. A seat handle.

As shown in fig. 3 and 7, the seat handle 1 includes a flat upper opening slot plate 11 and a head-changing seat 12 with one end fixedly connected, the rear end of the slot plate is closed, the bottom surface of the front end is fixedly connected with the upper plane of the head-changing seat 12 to form an opening 111 at the upper end of the head-changing seat, the corresponding sides of the two side wings of the slot plate are provided with clamping pieces 122 including folded edges or concave-convex strips, so that the sliding handle 2 is clamped in the slot plate 11 to slide and can not fall off, and the cross section shape, size and length of the channel of the slot plate 11 correspond to the cross section and length of the sliding handle.

As shown in fig. 7 and 8, the tool change base 12 is a vertical circular or square tubular body, a multi-square groove 121 with an upper opening is formed in the tubular body at the lower end of the opening 111, a through opening 123 is formed in the middle of the bottom of the groove, a wrench head block 3 with a corresponding shape and size can be arranged in the groove, the upper surface of the upper edge of the groove and the upper surface of the wrench head block 3 in the groove are flush with the inner bottom surface of the groove plate 11, the sliding handle 2 slides in the groove plate 11 without being affected, and a reinforcing support 124 is arranged at the connection position of the tool change base and the groove plate to ensure.

2. A sliding handle.

As shown in fig. 1, 2 and 8, the sliding handle 2 is slidably mounted in the handle slot plate 11 with corresponding shape and size, the pressing part 213 at the front end of the sliding handle is located at the empty position of the handle opening 111, the pressing part is used for pressing the wrench head block 3 in the replacing head seat groove to be not moved upwards when the sliding handle and the handle are overlapped, and the pressing part is provided with an upper through hole corresponding to the position of the lower through hole 123 of the replacing head seat groove and used for a wrenched screw rod to pass through; when the pressing part is positioned at the opening of the seat handle, the vertical edge of the pressing part is basically flush with the vertical edge of the head changing seat 12 to form a complete cylindrical body.

The rear end of the sliding handle is provided with a groove box plate 22 consisting of a plurality of grooves with lower openings, a through hole 123 is arranged in the middle of the groove bottom of a single groove 121, various types of wrench blocks 3 are arranged in the groove, the direction, the shape and the size of the groove of the sliding handle 2 correspond to those of the groove of the seat handle changing seat 12, each groove of the sliding handle can slide to vertically correspond to and coincide with the groove of the seat handle changing seat, and a mark is arranged on the upper panel of the sliding handle at the position of coincidence of each groove, so that the wrench blocks 3 can be conveniently changed.

The diameter of the through hole 123 on the groove bottom plate of the seat handle and the sliding handle is larger than the diameter of a finger, the wrench block 3 can be pushed up or pressed down by the finger, in addition, the diameter of the through hole of the screwdriver seat is larger than the diameter of the maximum sleeve opening 31 of the wrench block and smaller than the outer diameter of the wrench block, so the wrench block cannot fall out of the groove, the diameter of the through hole of the pressing part is larger than the diameter of the maximum sleeve opening of the wrench block and the diameter of a screw rod to be pulled, so that the screw rod to be screwed can pass through the through hole conveniently, and the through hole is circular or square.

The annular bottom edges of the lower opening groove 121 of the sliding handle and the groove of the switching seat are provided with magnetism 221, so that the groove of the lower opening in the wrench head block 3 made of metal materials cannot fall, but the respective magnetic attraction strength and direction are required to be adjusted, the switching of the wrench head block in the upper and lower groove positions is not influenced, and the wrench head block can be attracted by the magnetic bottom away from the nearest groove; of course, a clamping member 222, such as an elastic clamping bead or a spring plate, may be disposed between the vertical surface of the sliding handle groove and the vertical surface of the wrench head block for clamping the wrench head block 3.

3. A spanner block.

As shown in fig. 6 and 8, the wrench block 3 is a multi-square column block whose shape corresponds to the shape of the hollow inside the groove, such as a square or a hexagon, and can be placed in the groove of the sliding handle 2 by clamping or magnetic adsorption, the sleeve opening 31 through which the wrench block vertically passes corresponds to the peripheral shape of the screw cap 4 of the bolt to be screwed or unscrewed, the sleeve opening is divided into different types, and is placed in a plurality of lower opening grooves of the sliding handle in sequence, the upper panel of the sliding handle is marked with the type, the bottom surface of the wrench block protrudes corresponding to the groove through hole 123 to form a boss 32, the wrench block is placed in the corresponding head changing seat groove, the bottom boss corresponds to the size and thickness of the through hole, so that the bottom surface of the head changing seat is kept flat, and the sleeve opening 31 can be deeply sleeved on the screw cap 4.

The seat handle, the sliding handle and the wrench head block are made of hard metal materials and have proper thicknesses.

4. The working principle is as follows.

As shown in fig. 1 to 8, the rear end of the sliding handle is inserted into the groove plate from the opening of the seat handle, the heavy box is integrated, the sliding handle slides forwards, the wrench head block 3 with the required type is selected to coincide with the seat handle changing seat groove, the finger passes through the through hole of the upper panel of the sliding handle, the wrench head block 3 clamped or absorbed in the groove of the lower opening of the sliding handle is pressed downwards to the groove of the changing seat to be magnetically absorbed, then the sliding handle is completely folded in the groove plate with the seat handle, and the pressing part is propped against the opening, so that the wrench can be sleeved on the wrenched screw cap to work.

When the wrench is replaced, the wrench block 3 in the groove of the head changing seat is correspondingly positioned with the original model groove position of the space in the sliding handle, then a finger passes through the through hole on the bottom surface of the head changing seat, the upper top wrench block is moved into the groove of the sliding handle which is internally penetrated for clamping or adsorption, and then the corresponding model position is moved for replacing the wrench block, and the steps are the same as the above.