Ratchet wrench with round head

Abstract

The utility model discloses a round head ratchet wrench, including handle body, the head of handle body's middle part is shaped with center installation through -hole, and the inside wall on center installation through -hole is shaped with internal gear ring part, and ratchet head inserts the sleeve in center installation through -hole, and the top of ratchet head projects the top end of center installation through -hole, and the outside wall is shaped with radial extension edge, and the bottom surface of radial extension edge is pressed on the top surface of the head of handle body, and the bottom of ratchet head projects the bottom end of center installation through -hole, and the outside wall on the bottom of ratchet head is shaped with the ring -shaped groove of clamping, and the clamping ring -shaped groove is clamped in the clamping ring -shaped groove, and the top end surface of clamping spring is pressed on the bottom end surface of the head of handle body. The bottom surface middle part of ratchet head is shaped with the square connector of extending downward, and it is installed the steering wheel above the ratchet head, so that the head of handle body is circular, so that the volume of the head of handle body is reduced, and it is convenient to operate and use in the small -range operating environment.

Description

Technical fields:

[0001] This utility model relates to the field of fastener tool and equipment technology, and more specifically to a round-head ratchet wrench. Background technology:

[0002] Existing ratchet wrenches generally have a handle head formed at one end of the handle, with a ratchet structure installed at the handle head, and the drive head of the ratchet head inside the handle head extending out of the handle head.

[0003] In existing ratchet structures, the steering mechanism is located behind the head, and the wrench is generally oval-shaped, which increases the size of the head and increases its operating range. However, this makes it impossible to operate in some small-scale operating environments. Utility model content:

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a round-head ratchet wrench. A steering mechanism is installed above the ratchet head, which makes the head of the handle round and reduces the volume of the head of the handle, making it convenient to operate in a small operating environment.

[0005] The solution of this utility model to the aforementioned technical problem is:

[0006] A round-head ratchet wrench includes a handle body. A central mounting hole is formed in the middle of the head of the handle body. An internal toothed ring is formed on the inner wall of the central mounting hole. A ratchet head is inserted into the central mounting hole. The top of the ratchet head extends beyond the top of the central mounting hole. A radially extending edge is formed on its outer wall. The bottom surface of the radially extending edge presses against the top surface of the head of the handle body. The bottom of the ratchet head extends beyond the bottom of the central mounting hole. A retaining annular groove is formed on the outer wall of the bottom of the ratchet head. A retaining spring is retained in the retaining annular groove. The top surface of the retaining spring presses against the bottom surface of the head of the handle body. A downwardly extending square connector is formed in the middle of the bottom surface of the ratchet head.

[0007] The ratchet head has an adjustment groove extending to the left and right sides of its front side wall. An adjustment stop is inserted into the adjustment groove and is located in the central mounting hole. The outer side wall of the adjustment stop is an arc-shaped wall with an external toothed part that mates with the internal toothed ring part. The top surface of the ratchet head has an upper moving groove that extends left and right through the center. The bottom surface of the upper moving groove has a downward-extending recessed hole. The bottom end face of the recessed hole has a downward-extending central recessed hole. The push plate part formed on the top of the steering gear is inserted into the upper moving groove and mates with it. The middle moving block part of the steering gear is inserted into the recessed hole. The bottom surface of the middle moving block part has a connecting part that connects to the adjustment stop. A return spring and a steel ball are inserted into the central recessed hole. The bottom end of the return spring is pressed against the bottom end face of the central recessed hole, and the top end of the return spring is pressed against the bottom end face of the steel ball. The top end of the steel ball is pressed against the bottom end face of the connecting part.

[0008] The front sidewall of the adjusting block has two stepped through holes extending backward. The front part of the two stepped through holes is a large-diameter hole section and the rear part is a small-diameter hole section. A through slot is formed between the two stepped through holes. The rear part of the adjusting slot communicates with the recessed hole. Two stepped coiled spring parts are inserted into the corresponding stepped through holes and cooperate with the stepped through holes. The rear ends of the two spring parts are connected by a horizontally bent bending strip, which is inserted into the recessed hole.

[0009] The connecting part is a vertical rod with a spherical bottom surface and an annular groove formed on its upper outer side wall. The rear part of the bent strip is inserted into the annular groove. The rear end face of the large diameter section of the front part of the spring part presses against the rear end face of the large diameter hole section of the corresponding stepped through hole. The front wall surface of the rear part of the bent strip presses against the rear inner side wall of the annular groove of the connecting part.

[0010] The outstanding effect of this utility model is:

[0011] Compared with existing technologies, it has a steering gear installed above the ratchet head. The steering gear can be moved left and right to adjust the block, which is convenient. It also makes the head of the handle round, which reduces the volume of the head of the handle and makes it easy to operate in a small operating environment. Attached image description:

[0012] Figure 1 This is an exploded view of the structure of this utility model;

[0013] Figure 2 This is a partial top view of the present invention;

[0014] Figure 3 This is a partial sectional view of the present invention;

[0015] Figure 4 This is a partial cross-sectional view of the present invention from a different angle;

[0016] Figure 5 This is a partial structural schematic diagram of the present invention;

[0017] Figure 6 This is a partial structural diagram of the steering gear;

[0018] Figure 7 This is a partial structural diagram of the adjusting stop. Detailed implementation method:

[0019] For example, see below. Figures 1 to 7 As shown, a round-head ratchet wrench includes a handle body 10. A central mounting through hole is formed in the middle of the head of the handle body 10. An internal toothed ring is formed on the inner side wall of the central mounting through hole. A ratchet head 20 is inserted into the central mounting through hole. The top of the ratchet head 20 extends out of the top of the central mounting through hole. A radially extending edge 21 is formed on its outer side wall. The bottom surface of the radially extending edge 21 presses against the top surface of the head of the handle body 10. The bottom of the ratchet head 20 extends out of the bottom end of the central mounting through hole. A downwardly extending square connector 22 is formed in the middle of the bottom surface of the ratchet head 20. A retaining annular groove is formed on the outer side wall of the bottom of the ratchet head 20. A retaining spring 3 is retained in the retaining annular groove. The top surface of the retaining spring 3 presses against the bottom surface of the head of the handle body 10.

[0020] The front wall of the quad connector 22 has a side insertion hole formed in the middle. A spring 221 and a positioning ball 222 are inserted into the side through hole. One end of the spring 221 applies pressure to the inner end face of the side through hole, and the other end applies pressure to the inner end of the positioning ball 222. An annular limiting protrusion is formed on the inner side wall of the front end of the side insertion hole. The positioning ball 222 presses against the annular limiting protrusion, and the middle part of the front wall of the positioning ball 222 extends outward from the outer end of the side through hole. This structure is used to install components such as sleeves and is a conventional structure, which will not be described in detail here.

[0021] The rear end face of the handle 10 has a rear insertion hole formed in the middle.

[0022] Furthermore, the ratchet head 20 has an adjustment groove 23 extending to the left and right sides of its front side wall, and the adjustment stop 30 is inserted into the adjustment groove 23 and is located in the central mounting hole. The outer side wall of the adjustment stop 30 is an arc-shaped wall with an external toothed part that mates with the internal toothed part. The top surface of the ratchet head 20 has an upper moving groove 24 that extends left and right through the center. The bottom surface of the upper moving groove 24 has a downwardly extending recessed hole 25, and the bottom end face of the recessed hole 25 has a downwardly extending central recessed hole 26. A steering gear 40 is mounted on the ratchet head 20.

[0023] The steering gear 40 includes a push plate portion 41, a central moving block portion 42 is formed in the middle of the bottom surface of the push plate portion 41, a connecting portion 43 is formed in the middle of the bottom surface of the central moving block portion 42, and the bottom end surface of the connecting portion 43 is spherical.

[0024] The push plate part 41 is inserted into the upper moving through groove 24 and cooperates with the upper moving through groove 24. The middle moving block part 42 is inserted into the lower recessed hole 25. The connecting part 43 is connected to the adjusting stop block 30. The return spring 1 and the steel ball 2 are inserted into the central recessed hole 26. The bottom end of the return spring 1 is applied to the bottom end surface of the central recessed hole 26, and the top end of the return spring 1 is applied to the bottom end of the steel ball 2. The top end of the steel ball 2 is pressed against the bottom end surface of the connecting part 43.

[0025] Furthermore, the front sidewall of the adjusting block 30 has two rearwardly extending stepped through holes 31 formed in the middle. The front part of the two stepped through holes 31 is a large-diameter hole segment and the rear part is a small-diameter hole segment. A through slot is formed between the two stepped through holes 31. The rear part of the adjusting slot 23 communicates with the recessed hole 25. Two stepped coiled spring parts 4 are inserted into the corresponding stepped through holes 31 and cooperate with the stepped through holes 31. The rear ends of the two spring parts 4 are connected by a horizontally bent bending strip 5, which is inserted into the recessed hole 25.

[0026] The connecting part 43 is a vertical rod part with a spherical bottom surface and an annular groove formed on its upper outer side wall. The rear part of the bent strip 5 is inserted into the annular groove. The rear end face of the front large diameter section of the spring part 4 presses against the rear end face of the corresponding large diameter hole section of the stepped through hole 31. The front wall surface of the rear part of the bent strip 5 presses against the rear inner side wall of the annular groove of the connecting part 43.

[0027] The front and rear sidewalls of the central movable block 42 are arc-shaped, which cooperate with the inner sidewalls of the front and rear parts of the recessed hole 25.

[0028] The left and right side walls of the recessed hole 25 are formed with outwardly extending through holes. The pin 6 is engaged in the two through holes and inserted into the recessed hole 25, and is also inserted into the left and right extending central through hole formed in the middle of the central moving block part 42.

[0029] The front and rear sides of the push plate 41 are close to or in close contact with the front and rear inner walls of the moving through groove 24.

[0030] In this embodiment, since the steering gear 40 is installed at the ratchet head 20, there is no need to install steering gear or other components at its rear. At this time, the head of the handle 10 can be made into a round head that matches the ratchet head 20. In this way, when in use, it is only necessary to extend the head of the handle 10 into the operating position to ensure normal rotation and operation without touching surrounding objects. By pushing the push plate part 41 of the steering gear 40 left and right, the connecting part 43 moves left and right, which drives the bending strip 5 to move. Through the spring part 4, the adjusting block 30 moves left and right, so that the left or right side of the front side wall of the adjusting block 30 rests against the corresponding position of the internal gear ring part formed on the inner side wall of the central mounting through hole, thereby changing the rotation direction of the ratchet head 20 to meet the usage requirements.

[0031] When the connecting part 43 moves left and right, the top of the corresponding return spring 1 will lift the steel ball 2 to one side of the connecting part 43 and press it against the bottom side of the middle moving block part 42 to prevent the steering gear 40 from returning to its original position.

[0032] Finally, the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, all equivalent technical solutions also fall within the scope of the present utility model, and the patent protection scope of the present utility model should be defined by the claims.

Claims

1. A round-head ratchet wrench, comprising a handle (10), characterized in that: The head of the handle (10) has a central mounting through hole formed in the middle. An internal toothed ring is formed on the inner side wall of the central mounting through hole. The ratchet head (20) is inserted into the central mounting through hole. The top of the ratchet head (20) extends out of the top of the central mounting through hole. A radially extending edge (21) is formed on its outer side wall. The bottom surface of the radially extending edge (21) presses against the top surface of the head of the handle (10). The bottom of the ratchet head (20) extends out of the bottom end of the central mounting through hole. A downwardly extending square connector (22) is formed in the middle of the bottom surface of the ratchet head (20). The ratchet head (20) has an adjustment groove (23) extending left and right and extending out of the left and right side walls of the ratchet head (20) on its front side wall. The adjustment stop (30) is inserted into the adjustment groove (23) and is located in the central mounting hole. The outer side wall of the adjustment stop (30) is an arc-shaped wall surface with an external toothed part formed thereon, which cooperates with the internal toothed part. The top surface of the ratchet head (20) has an upper moving groove (24) that extends left and right through the center. The bottom surface of the upper moving groove (24) has a downwardly extending recessed hole (25) formed in the center. The bottom end face of the recessed hole (25) has a downwardly extending central recessed hole (26) formed in the center. The steering gear (40) The push plate part (41) formed at the top is inserted into the upper moving through groove (24) and cooperates with the upper moving through groove (24). The middle moving block part (42) of the steering gear (40) is inserted into the lower recess (25). A connecting part (43) is formed in the middle of the bottom surface of the middle moving block part (42). The connecting part (43) is connected to the adjusting stop (30). A return spring (1) and a steel ball (2) are inserted in the central recess (26). The bottom end of the return spring (1) is pressed against the bottom end surface of the central recess (26). The top end of the return spring (1) is pressed against the bottom end of the steel ball (2). The top end of the steel ball (2) is pressed against the bottom end surface of the connecting part (43).

2. A round-head ratchet wrench according to claim 1, characterized in that: The bottom outer wall of the ratchet head (20) is formed with a locking annular groove, and the retaining spring (3) is locked in the locking annular groove. The top surface of the retaining spring (3) presses against the bottom surface of the head of the handle (10).

3. A round-head ratchet wrench according to claim 1, characterized in that: The front sidewall of the adjusting block (30) has two stepped through holes (31) extending backward. The front part of the two stepped through holes (31) is a large diameter hole section and the rear part is a small diameter hole section. A through slot is formed between the two stepped through holes (31). The rear part of the adjusting slot (23) communicates with the recessed hole (25). Two stepped coiled spring parts (4) are inserted into the corresponding stepped through holes (31) and cooperate with the stepped through holes (31). The rear ends of the two spring parts (4) are connected by a horizontally bent bending strip (5). The bending strip (5) is inserted into the recessed hole (25). The connecting part (43) is a vertical rod with a spherical bottom surface and an annular groove formed on its upper outer side wall. The rear part of the bent strip (5) is inserted into the annular groove. The rear end face of the large diameter section of the front part of the spring part (4) presses against the rear end face of the large diameter hole section of the corresponding stepped through hole (31). The front wall surface of the rear part of the bent strip (5) presses against the rear inner side wall of the annular groove of the connecting part (43).

4. A round-head ratchet wrench according to claim 1, characterized in that: The front and rear sidewalls of the central movable block (42) are arc-shaped, which cooperate with the inner sidewalls of the front and rear parts of the recessed hole (25).

5. A round-head ratchet wrench according to claim 1, characterized in that: The left and right side walls of the recessed hole (25) are formed with outwardly extending through holes. The pin (6) is inserted into the two through holes and into the recessed hole (25), and at the same time, it is inserted into the left and right extending central through hole formed in the middle of the central moving block (42).

6. A round-head ratchet wrench according to claim 1, characterized in that: The front and rear sides of the push plate (41) are close to or in close contact with the front and rear inner walls of the moving through groove (24).

7. A round-head ratchet wrench according to claim 1, characterized in that: The front wall of the quad connector (22) is formed with a side insertion hole. The spring (221) and the positioning steel ball (222) are inserted into the side through hole. One end of the spring (221) is applied to the inner end face of the side through hole, and the other end is applied to the inner end of the positioning steel ball (222). An annular limiting protrusion is formed on the inner side wall of the front end of the side insertion hole. The positioning steel ball (222) is pressed against the annular limiting protrusion. The front wall of the positioning steel ball (222) extends out of the outer end of the side through hole.

8. A round-head ratchet wrench according to claim 1, characterized in that: The rear end face of the handle (10) is formed with a rear insertion hole.

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