CN212287411U - Simple variable-size wrench - Google Patents
Simple variable-size wrench Download PDFInfo
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- CN212287411U CN212287411U CN202020677243.XU CN202020677243U CN212287411U CN 212287411 U CN212287411 U CN 212287411U CN 202020677243 U CN202020677243 U CN 202020677243U CN 212287411 U CN212287411 U CN 212287411U
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- clamping
- clamping strip
- wrench
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- 230000000670 limiting effect Effects 0.000 claims description 8
- 210000003205 muscle Anatomy 0.000 description 2
- 241000282693 Cercopithecidae Species 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model relates to a simple variable-size wrench, which comprises a head part and a handle part, wherein the head part comprises a clamping groove, a plurality of clamping strips and a clamping strip fastening device; the clamping strip is clamped in the clamping groove, and the clamping strip is fastened in the clamping groove through the clamping strip fastening device; when the clamping strip fastening device is loosened, the clamping strip can move up and down in the clamping groove, a notch for accommodating the nut can be formed after the clamping strip moves down, the notch is a wrench opening, and the size of the wrench opening can be adjusted by changing the number of the downward moving clamping strips, so that the wrench can adapt to nuts of different sizes. The clamping strip fastening device is loosened, the clamping strip is moved downwards, and then the clamping strip fastening device is fastened, so that the opening of the wrench can be formed. Because the spanner opening is that the card strip breach forms, the opening size is difficult for changing, has the stable advantage of opening of fixed spanner. The opening size can be adjusted by changing the number of the downward moving clamping strips, so that the adjustable wrench can adapt to different nuts or screws and has the advantage of adjustable wrench.
Description
Technical Field
The utility model relates to a hand tool, in particular to monkey wrench.
Background
The common adjustable wrench is generally composed of a wrench handle, a wrench head, a screw rod, a rotating shaft, a spring and other parts, and the size of the wrench opening can be changed by rotating the screw rod during use, so that the adjustable wrench can adapt to nuts or screws with different sizes. However, since the wrench head is not fixed, even if the screw is not rotated, the opening size of the wrench is continuously changed, and the changed size is related to the type of the wrench, when the adjustable wrench is used, the screw needs to be continuously rotated to adjust the opening size of the wrench, which brings trouble to users. The fixed spanner can only adapt to nuts or screws of one size without the trouble, and the defects are obvious.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the technical problem who exists among the prior art, provide a simple and easy variable size spanner, can solve ordinary adjustable spanner opening size unstability, fixed spanner can not adapt to the problem of not unidimensional nut or screw.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a simple variable-size wrench comprises a head part and a handle part, wherein the head part comprises a clamping groove, a plurality of clamping strips and a clamping strip fastening device; the clamping strip is clamped in the clamping groove, and the clamping strip is fastened in the clamping groove through the clamping strip fastening device; when the clamping strip fastening device is loosened, the clamping strip can move up and down in the clamping groove, a notch for accommodating a nut can be formed after the clamping strip moves down, and the notch is a wrench opening;
the clamping strip comprises a clamping strip body, a clamping strip tail part and a convex rib; the clamping strip comprises a central clamping strip and other clamping strips, and the central clamping strip is provided with a convex rib on the side surface of the lower end of the clamping strip body; the other clamping strips comprise two parallel plates and a convex rib, the convex rib is arranged on the same side of the parallel plates and connects the parallel plates, and one of the parallel plates exceeds the convex rib in length to form a tail part; the clamping strips are sequentially overlapped and arranged from the center to the two sides and are clamped in the clamping grooves; the cross section of the clamping groove is 4-shaped, and a cavity which is used for accommodating the convex rib and has a limiting effect is arranged on the wall of the clamping groove; the clamping strip fastening device is composed of a threaded hole and a screw matched with the threaded hole, the threaded hole is located below the clamping groove, and when the screw is screwed down, the head of the screw can extrude the tail of the clamping strip to fasten the clamping strip.
In the technical scheme, the wrench opening can be formed by loosening the screw of the clamping strip fastening device, moving the clamping strip downwards and then fastening the clamping strip fastening device. The opening of the wrench is formed by the notch of the clamping strip, so that the opening for fixing the wrench is stable. The opening size can be adjusted by changing the number of the downward moving clamping strips, so that the adjustable wrench can adapt to different nuts or screws and has the advantage of adjustable wrench. The wrench with the structure has compact structure and small volume.
As an improvement of the invention, the convex rib is provided with a bulge, the wall of the clamping groove is provided with a sliding groove along the length direction of the wrench, the bulge passes through the sliding groove, and the clamping strip can be moved more conveniently by pushing the bulge.
As another improvement of the invention, a small block which can be disassembled is sleeved on the bulge, and letters for indicating the opening size of the wrench are printed on the small block. This allows a quick determination of how to adjust the strip to obtain the desired size of opening.
As another improvement of the invention, the upper end of the clamping groove is V-shaped, the end part of the clamping strip is provided with an inclined plane, and when the clamping strip moves downwards, the end part of the clamping strip is superposed with the V-shaped upper end of the clamping groove. Thus, the nut can be more fit with the hexagonal nut.
As another improvement of the invention, the upper end of the clamping groove is in a straight line shape, the end part of the clamping strip is provided with a horizontal plane, and when the clamping strip moves downwards, the end part of the clamping strip and the upper end of the clamping groove are positioned on the same plane. Such a structure is more convenient to manufacture.
The number of the clamping strips is preferably 3-5, and the larger the number of the clamping strips is, the more nuts or screws can be adapted to, but the structure is more complicated.
Drawings
FIG. 1 is a perspective view of the wrench structure of the present invention;
FIG. 2 is a perspective view of a center card strip;
FIG. 3 is a perspective view of another card strip;
FIG. 4 is a cross-sectional view of the wrench of the present invention shown in the condition in which the clamping bar and screw are not installed;
FIG. 5 is a cross-sectional view of the wrench of the present invention;
fig. 6 is a cross-sectional view of the head of the wrench of the present invention taken along line a-a of fig. 1.
In the drawings, the components represented by the respective reference numerals are listed below:
1. head, 2, stalk portion, 3, central card strip, 31, central card strip head, 32, central card strip afterbody, 33, central card strip protruding muscle, 34, central card strip arch, 35, central card strip fritter, 4, card strip a, 5, card strip b, 6, card strip c, 41, non-central card strip head, 42, non-central card strip afterbody, 43, non-central card strip protruding muscle, 44, non-central card strip arch, 45, non-central card strip fritter, 7, screw, 8, screw hole, 9, draw-in groove, 10, spacing cavity, 11, sliding tray.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
For convenience of description, a direction away from the wrench handle 2 will be referred to as upward, and vice versa as downward. It is to be understood that the terms "above," "below," and the like, are used merely for convenience in describing the present invention and do not indicate or imply that the components or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered as limiting.
Fig. 1 is a perspective view showing the structure of a wrench according to the present invention, which is composed of a head portion 1 and a shank portion 2.
The wrench head 1 is provided with a clamping groove 9, the clamping strip is clamped in the clamping groove 9, and the clamping strip is divided into two types according to the difference of the shape and the installation position of the clamping strip: the central clamping strip 3 and other clamping strips, the central clamping strip 3 is the clamping strip arranged in the center of the clamping groove 9, and the other clamping strips are the clamping strips except the central clamping strip 3. In the present embodiment, there are 3 other card stripes, that is, the card stripe a 4, the card stripe b 5, and the card stripe c 6. Because the shapes and the structures of other clamping strips are the same and only the sizes are different, the clamping strips are uniformly shown by a perspective view. Fig. 2 and 3 are perspective views of the center card strip 3 and other card strips, respectively. It can be seen from these two figures that the central card strip 3 is identical in structure with the other card strips, and is composed of a card strip head, a card strip tail, card strip ribs, protrusions, and small blocks on the protrusions, the shape of the central card strip head 31 is different from that of the other card strip heads 41, the central card strip tail 32 is identical to that of the other card strip tails 42, the central card strip ribs 33 and other card strip ribs 43, the central card strip protrusion 34 and other card strip protrusions 44, and the central card strip small blocks 35 and other card strip small blocks 45. The card strips can be spliced together according to the sequence of the central card strip 3, the card strip a 4, the card strip b 5 and the card strip c 6, and the cross section after splicing can be seen in fig. 5. The upper end of each clamping strip is provided with an inclined end face, the central clamping strip 3 is a V-shaped upper end, the upper ends of other clamping strips are wedge-shaped, and a larger V-shaped is formed when the clamping strips are spliced together.
Fig. 4 is a sectional view of the wrench, shown in a state where the clamping bar and the screw are not installed, and fig. 5 is also a sectional view of the head of the wrench, shown in a state where the clamping bar and the screw 7 are installed. It can be seen from these two figures that the slot 9 is 4-shaped, the upper part of the slot 9 is wider, the lower part is narrower and the end part is v-shaped. The wider part of the clamping groove 9 is adapted to the width of the head part of the spliced clamping strips, and the narrower part is adapted to the width of the tail part of the spliced clamping strips. As can also be seen in fig. 4 and 5, a threaded hole 8 is also provided in the head portion 1, which hole communicates with the narrower part of the locking slot 9, so that when the screw 7 is tightened, the head of the screw comes into contact with the tail of the locking strip, which is fastened in the locking slot 9.
Fig. 6 is a cross-sectional view of the head of the wrench taken along the line a-a in fig. 1, and it can be seen that a limiting cavity 10 is further provided on the inner wall of the slot 9, and this cavity serves two purposes, the first one is to accommodate the rib on the clip strip, so that the clip strip is more firmly installed in the slot 9. Therefore, the width of the limiting cavity 10 is adapted to the width of the convex rib of the clamping strip, and the depth is adapted to the thickness of the convex rib; the second function is to play a limiting role, the convex rib can only move up and down in the range of the limiting cavity 10, the convex rib 33 of the central clamping strip can only move down to the lower end of the limiting cavity 10, and the convex rib of the clamping strip c 6 at the outermost side can only move up to the upper end of the cavity. In this embodiment, when all are moved down to the extreme positions, the v-shape formed at the end of the card bar coincides with the v-shape at the end of the card slot 9.
In this embodiment, the upper end of the clamping groove 9 can also be horizontal, and correspondingly, the upper end of the clamping strip is also a horizontal end surface.
The convex rib of the clamping strip can be provided with a bulge, the wall of the clamping groove 9 provided with the limit cavity 10 is provided with a sliding groove 11, the bulge passes through the sliding groove 11, and the sliding bulge can drive the clamping strip to move up and down within the limit range of the limit cavity 10.
A detachable small block can be sleeved on the bulge, and the size of a nut corresponding to an opening generated after the clamping strip moves downwards, such as M4, M5 and the like, is printed on the small block.
In this embodiment, there are 4 strips. Can be applied to nuts of three different sizes. When only the central clamping strip 3 is moved downwards, the opening corresponds to the size of an M4 nut; when the central clamping strip 3 and the clamping strip a 4 are simultaneously moved downwards, the opening corresponds to the size of an M5 nut; and so on. In general, the width of the opening formed by downward moving the clamping strip is corresponding to the size of the standard nut, and in special cases, the clamping strip with a specific width can be customized according to the size of a non-standard part. The number of the clamping strips is not fixed, the spanner can adapt to nuts with more sizes by increasing the number of the clamping strips, but the width of the spanner is increased, the use is inconvenient, and the number of the clamping strips is generally suitable for 3-5.
In the initial state, all the strips are uppermost, as shown in fig. 1. During the use, unscrew screw 7 earlier, make its head leave card strip afterbody, make the card strip can remove, will be greater than the card strip that needs use the size and press, withstand the card strip with the nut, push down the card strip that is less than and equals its size, screw up screw 7 when pushing away to the lower limit position and make it compress tightly card strip afterbody, will block the strip fixed. If the resetting is needed, the screw 7 is unscrewed, the small block is slid, and the downward-moving clamping strip is slid to the upper limit.
The present invention is not limited to the above-described embodiments, and can be implemented regardless of the shape of the card strip, the shape of the card slot, and the type of the fastening device, as long as the head portion is provided with the card slot that can accommodate the card strip, the card slot is provided with a space that enables the card strip to move up and down, and the fastening device can fasten or unfasten the card strip. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A simple variable-size wrench comprises a head part and a handle part, and is characterized in that the head part comprises a clamping groove, a plurality of clamping strips and a clamping strip fastening device; the clamping strip is clamped in the clamping groove, and the clamping strip is fastened in the clamping groove through the clamping strip fastening device; when the clamping strip fastening device is loosened, the clamping strip can move up and down in the clamping groove, a notch for accommodating a nut can be formed after the clamping strip moves down, and the notch is a wrench opening;
the clamping strip comprises a clamping strip body, a clamping strip tail part and a convex rib; the clamping strip comprises a central clamping strip and other clamping strips, and the central clamping strip is provided with a convex rib on the side surface of the lower end of the clamping strip body; the other clamping strips comprise two parallel plates and a convex rib, the convex rib is arranged on the same side of the parallel plates and connects the parallel plates, and one of the parallel plates exceeds the convex rib in length to form a tail part; the clamping strips are sequentially overlapped and arranged from the center to the two sides and are clamped in the clamping grooves; the cross section of the clamping groove is 4-shaped, and a cavity which is used for accommodating the convex rib and has a limiting effect is arranged on the wall of the clamping groove; the clamping strip fastening device is composed of a threaded hole and a screw matched with the threaded hole, the threaded hole is located below the clamping groove, and when the screw is screwed down, the head of the screw can extrude the tail of the clamping strip to fasten the clamping strip.
2. The simple size-variable wrench as claimed in claim 1, wherein the rib has a protrusion, the wall of the slot has a sliding slot along the length of the wrench, and the protrusion passes through the sliding slot.
3. The simple size-variable wrench as claimed in claim 2, wherein the protrusion is sleeved with a detachable small block, and the small block is printed with a letter indicating the size of the opening of the wrench.
4. A simple size-variable wrench as claimed in any one of claims 1 to 3, wherein the upper end of the slot is v-shaped, the end of the locking bar has an inclined surface, and when the locking bar moves downwards, the end of the locking bar can coincide with the v-shape of the upper end of the slot.
5. A simple size-variable wrench as claimed in any one of claims 1 to 3, wherein the upper end of the slot is in a straight line shape, the end of the locking bar has a horizontal plane, and when the locking bar moves downwards, the end of the locking bar and the upper end of the slot are on the same plane.
6. A simple size-variable wrench as claimed in any one of claims 1 to 3, wherein the number of said locking strips is 3 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020677243.XU CN212287411U (en) | 2020-04-28 | 2020-04-28 | Simple variable-size wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020677243.XU CN212287411U (en) | 2020-04-28 | 2020-04-28 | Simple variable-size wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212287411U true CN212287411U (en) | 2021-01-05 |
Family
ID=73963262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020677243.XU Active CN212287411U (en) | 2020-04-28 | 2020-04-28 | Simple variable-size wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212287411U (en) |
-
2020
- 2020-04-28 CN CN202020677243.XU patent/CN212287411U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A simple variable size wrench Effective date of registration: 20231229 Granted publication date: 20210105 Pledgee: Hubei Science and Technology Financing Guarantee Co.,Ltd. Pledgor: Harbin ship Optoelectronics (Wuhan) Co.,Ltd. Registration number: Y2023980075304 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |