TWI806060B - Ratchet tool with a double-head abutment type reversing brake device - Google Patents

Abstract

The present invention provides a ratchet tool with a double-head abutment type reversing brake device. The head end of the main body of the ratchet tool has a main accommodating part for a ratchet head, and one side of the main accommodating part is connected with a pair of accommodating parts, which is characterized in that the auxiliary accommodating part forms a two-stage guiding concave part, which includes a left and right guiding section and a middle convex part. A double-headed abutting reversing brake device, including a brake block, a rotation control member, a coil spring, a first offset push element and a second offset push element, wherein the second surface of the brake block forms the first bearing surface, the second bearing surface and the connecting section, and the coil spring is accommodated in the radial through hole of the rotation control member. The first and second pushing elements are respectively accommodated in the first and second openings of the radial through holes, and the first and second offset pushing elements are pushed by the two ends of the coil spring.

Description

Ratchet tool with double-head abutment type reversing brake device

The present invention relates to a ratchet tool; in particular, it refers to the disclosure of the structure of an innovative ratchet tool with a double-head abutment type reversing braking device.

The ratchet tool is a ratchet tool that utilizes a ratchet mechanism to achieve one-way backstop action. It includes a body, a grip portion, an action portion and a brake unit, wherein the body is formed with an accommodating hole for setting the action portion and the Braking unit, the acting part is used to connect a tool driving structure (such as a sleeve), so that the acting part drives the tool driving structure to rotate, the braking unit includes a ratchet, a brake block and a control member, the ratchet and the The action part is pivotally connected, and the brake block is engaged with the ratchet to form a one-way resistance, thereby restricting the one-way rotation of the ratchet and the action part, and the control member forms a resistance to the brake block. The limit and stop direction of the brake block to the ratchet.

However, the conventional ratchet tool finds that there are still some problems and disadvantages in the actual application experience, for example: rotating and operating the control member to change the position where the control member resists the brake block, thereby changing the position of the brake block against the brake block. When the direction of the ratchet is limited and fixed, due to the relative configuration of the control member and the brake block, the brake block forms a large resistance and friction force to the control member, thus causing the rotation operation of the control member to be difficult. Because it is not easy, and it often happens that the switch is not in place, which affects the use efficiency of the ratchet tool. To be precise, when the control member is not in place for the switch, it will be because the ratchets that cooperate with the brake block and the ratchet are not Teeth are prone to chipping due to complete meshing. In addition, the control member of the brake unit of the conventional ratchet tool usually has to be drilled with an oblique radial deep groove on the side wall of the housing hole of the body of the ratchet tool in terms of its structural design (refer to the Taiwan announcement No. 506308 No. 5 of Patent No. 506308) is used to set a support and limit member, such as a spring with a push element or a push rod. However, this type is manufactured due to the radial depth The practicability of the drilling process of the groove is limited by the diameter of the accommodating hole, that is to say, for some small-sized ratchet tools, the deep radial groove cannot be drilled into shape, and this kind of The shape of the supporting limiting member also relatively increases the number of components and the assembly process of the ratchet tool, and increases the manufacturing cost, so there is a need for further simplification.

Therefore, in view of the above-mentioned problems existing in the conventional ratchet tool in the braking unit, how to develop an innovative structure that can be more ideal and practical is really waiting for the relevant industry to think about the goal and direction of the breakthrough; in view of this , the inventor has been engaged in the manufacture, development and design of related products for many years. After detailed design and careful evaluation for the above-mentioned goals, he finally obtained a practical invention.

The main purpose of the present invention is to provide a ball-type reversing braking structure of a ratchet tool. The technical problem to be solved is how to develop a new type of reversing braking structure with more ideal and practical thinking and innovation. breakthrough.

Based on the above-mentioned purpose, the technical characteristics of the present invention to solve the problem mainly lie in that the ratchet tool system includes: a main body, including a head end and a grip part, the head end is formed with a main accommodating part; a ratchet head is screwed on the main body The accommodating part is relatively rotatable. One end surface of the ratchet head protrudes to form a driving part, and a ring-shaped ratchet surface is formed on the outer periphery of the ratchet head. According to the protruding axial system of the driving part, a Axial line, and the head end of the main body defines a radial line that is orthogonal to the axial line, and the main accommodating part has two axial ports that correspond to the axial line and are circular; a pair of accommodating One side of the main accommodating part is in the form of a concave space. The auxiliary accommodating part has an inner wall. One side of the inner wall forms a radial channel to communicate with the main accommodating part. The radial channel faces The extension direction of the radial line: a two-stage guide recess formed on the inner wall of the auxiliary accommodation part, and the two-stage guide recess presents a concave groove in the direction of the radial line along the extension direction of the inner wall Groove type, and the two-stage guide recess includes a left guide section and a right guide section that are symmetrically distributed and connected to each other, and a left guide section and a right guide section are formed opposite each other. The middle convex part; a double-head abutting reversing brake device, including a brake block, a rotation control member, a coil spring, a first push element and a second push element, wherein the brake block is set in the main container Set in the part and between the ring-shaped ratchet surface of the ratchet head and the rotation control member, the brake block has a first surface and a second surface, the first surface and the second surface are arranged in a relationship opposite to each other, and the first surface It faces the ratchet head, and the first surface forms an arc-shaped tooth row to mesh with the annular ratchet surface, and the middle of the second surface is concave arc-shaped to define a first abutment surface, a second abutment surface and A connection section between the first abutment surface and the second abutment surface; the rotation control part is screwed in the auxiliary accommodation part, and the rotation control part is in the shape of a shaft and defines an inner end and an outer end and a shaft part between the inner end and the outer end, wherein the outer end forms a pulling part exposed outside the assembly inlet, the shaft part forms a radial through hole, and the radial through hole has a first hole and The second orifice, the wrenching part can be pulled by a user to drive the rotation direction of the rotation control part, forming the first turning position and the second turning position of the turning control part; the coil spring is accommodated in the radial through hole , the first resisting element is accommodated in the radial through hole and partially protrudes from the first hole and then leans against the middle of the second surface of the brake block in a concave arc shape, and the second resisting element is accommodated in radially through the hole and partly protrudes from the second orifice, and constitutes the state where the first resisting element and the second resisting element are pushed elastically by the two ends of the coil spring; and when the rotation control member is in the first direction position, it constitutes the state that the first resisting element abuts against the first abutting surface and the second resisting element abuts against the left guide section, and when the rotation control member is in the second steering position, it constitutes the state of the first resisting element. A state in which a pushing element leans against the second bearing surface and the second pushing element leans against the right guide section.

Effect and advantage of the present invention mainly comprise: First, the reversing braking device itself has a guiding structure formed by the second resisting element and the two-stage guiding recess, which also has a limiting function along the axial direction, without adding other limiting components. The stable limit rotation control part effectively prevents it from easily slipping out of the auxiliary accommodating part, and the body does not need to drill oblique deep holes to place positioning components. advantage. Second, the reversing positioning effect is more in place, because the two-stage guide concave part includes a "W"-shaped guide path formed by the left and right guide sections and the middle convex part, and cooperates with the first resisting element and the second The state and characteristics of the pushing element being pushed elastically by the two ends of the coil spring. When the user turns the rotary control part to switch the steering, the second pushing element will smoothly roll and move to the left guide section or the right guide section. There is no possibility of staying in the middle convex part, so that each steering switching action can be accurately in place, which is very practical and progressive.

Figures 1 to 10 illustrate preferred embodiments of the ratchet tool with a double-headed reversing braking device of the present invention, but these embodiments are for illustration purposes only, and are not limited by this structure in patent applications .

The ratchet tool system includes the following components: a main body 10, including a head end 11 and a grip portion 12 (note: the drawing is in the form of a long handle), wherein the head end 11 forms a main accommodating portion 13 A ratchet head 20 is screwed in the main accommodating portion 13 and is relatively rotatable. One end surface of the ratchet head 20 protrudes to form a driving action portion 21 (such as a square prism), and the side of the ratchet head 20 An annular ratchet surface 22 is formed on the outer periphery, wherein an axial line L1 is defined according to the protruding axial system of the driving action part 21, and the head end 10 of the main body 10 defines an axial line L1 A radial line L2 in an orthogonal relationship, and the main accommodating portion 13 has two circular axial ports 130 corresponding to the axial line L1; a secondary accommodating portion 30 is adjacent to the main accommodating portion One side of the part 13 is in the form of a concave space, the secondary accommodating part 30 has an inner wall 31, and one side of the inner wall 31 forms a radial channel 32 to communicate with the main accommodating part 13, wherein the diameter The channel 32 is directed toward the extension direction of the radial line L2 (that is, the double-headed butt-off type reversing brake device 50 described later is in an axially closed type after being accommodated), and the secondary accommodating portion 30 The inner wall 31 is in the shape of an axial circular hole and has an assembly inlet 315 corresponding to the axial line L1, and a partition wall is defined between the assembly inlet 315 and the corresponding adjacent axial port 130 316; a two-stage guide recess 40 formed on the inner wall 31 of the secondary accommodation portion 30, the two-stage guide recess 40 is along the extension direction of the inner wall 31 and presents toward the radial line L2 The groove type is concave in the extension direction, and the two-stage guide recess 40 includes a left guide section 41 and a right guide section 42 that are symmetrically distributed and connected to each other. Between 41 and the right side guide section 42, an intermediate protrusion 43 is formed oppositely; a double-headed abutment type reversing brake device 50 includes a brake block 53, a rotation control member 54, a coil spring 55, a first A push element 51 (can be a steel ball or a block) and a second push element 52 (it is better to use a steel ball), wherein the brake block 53 is arranged in the main accommodating portion 13 and is located at the ratchet head 20 Between the annular ratchet surface 22 and the rotation control member 54, the brake block 53 has a first surface 531 and a second surface 532, and the first surface 531 and the second surface 532 are arranged in opposite relationship to each other. , the first surface 531 is facing the ratchet head 20, and the first surface 531 is formed with an arc-shaped tooth row 533 meshing with the annular ratchet surface 22, and the middle of the second surface 532 is concave arc-shaped and Define and form a first abutment surface 534, a second abutment surface 535, and a connecting section 536 between the first abutment surface 534 and the second abutment surface 535; the rotation control member 54 is screwed In the auxiliary housing portion 30, the rotation control member 54 is in the shape of a shaft and defines an inner end 541, an outer end 542, and a shaft portion 543 between the inner end 541 and the outer end 542. , wherein the outer end 542 forms a pulling portion 544 that is exposed outside the assembly introduction port 315 of the secondary accommodating portion 30, and the shaft portion 543 forms a radial through hole 545, and the radial through hole 545 has a The first hole 546 and a second hole 547, the pulling part 544 can be pulled by a user to drive the rotation direction of the rotation control member 54, and the rotation control member 54 has a first turning position ( State shown in Figure 5 and Figure 6) and a second steering position (state shown in Figure 7 and Figure 8); the coil spring 55 is accommodated in the radial through hole 545, the first thrust element 51 Accommodated in the radial through hole 545 and partly protruded from the first hole 546, it abuts against the center of the second surface 532 of the brake block 53 in a concave arc shape. The second resisting element 52 is accommodated in the radial through hole 545 and partly protrudes from the second hole 547, and constitutes that the first resisting element 51 and the second resisting element 52 are normally elastically pushed by the two ends of the coil spring 55. push state; wherein, when the rotation control member 54 is in the first steering position as shown in FIG. The element 52 abuts against the state of the left guide section 41, and when the rotation control member 54 is in the second steering position as shown in FIG. 8, the first resisting element 51 abuts against the second The abutting surface 535 and the state where the second abutting element 52 abuts against the right side guide section 42 .

As shown in Figure 4 and Figure 6, in this example, the two sides of the concave arc-shaped part in the middle of the second surface 532 of the brake block 53 are relatively defined to form a left flange part 537 and a right flange part 538. The shaft column portion 543 of the control member 54 is correspondingly formed with a left avoidance recess 548 and a right avoidance recess 549; part 537 correspondingly enters the state within the range of the left avoidance recess 548, and when the rotation control member 54 is in the second steering position as shown in FIG. and the left and right sides of the second surface 532 of the brake block 53 are also formed with a left abutting edge 5321 and a right abutting edge 5322 symmetrically arranged; the left and right sides of the main accommodating portion 13 correspond to A left abutting wall 131 and a right abutting wall 132 are formed.

As shown in FIG. 10 , in this example, the two-stage guiding recess 40 is formed with a first limiting wall 401 and a second limiting wall 402 corresponding to the extending direction of the axial line L1 for the second The corresponding side of the thrust element 52 leans against, so that the second thrust element 52 corresponds to the axis during the reciprocating rolling displacement process of the left guide section 41 , the right guide section 42 and the middle protrusion 43 . In the direction of the line L1, a firm limit action can be obtained.

Wherein, the contact fit between the two-stage guide recess 40 and the second thrust element 52 is a single-point contact or a multi-point contact (such as Gothic, U-shaped or other similar shapes) or) any one of the types; this part is revealed in Figure 11, the groove bottom of the two-stage guide recess 40 and the second push member 52 are essentially only in a single-point contact state (as shown in P1 shown), this is because the second thrust element 52 is normally supported by the coil spring 55, so the abutment action point of the second thrust element 52 will always be concentrated on its quarter point and the two-stage guide The bottom of the groove of the recess 40 abuts against the point; in addition, as shown in Figure 12, the two-stage guide recess 40B is in the shape of a "ㄈ" cross-section, so the first limiting wall 401B, the second limiting wall 402B and the groove At the bottom, a total of multi-touch implementation patterns are formed.

As shown in Figure 6, in this example, the left guide section 41 and the right guide section 42 are two arc-shaped concave grooves that are symmetrically arranged and communicated, and the left guide section 41 and the right guide section The mountain-shaped portion formed by the intersection of the right guide sections 42 forms the middle convex portion 43 .

As shown in Figure 13, in this example, the left guide section 41b and the right guide section 42b are in the form of two grooves symmetrically spaced apart, and the left guide section 41b and the right guide section The flat wall portions formed by the intervals between the segments 42b form the intermediate convex portion 43b. In addition, the left guide section 41c, the right guide section 42c and the middle convex part 43c as shown in Fig. 14 are another variant embodiment.

As shown in FIG. 6 , in this example, two ends of the two-stage guiding recess 40 that are relatively far away from each other respectively extend and communicate with the left abutting wall 131 and the right abutting wall 132 .

With the above-mentioned structural composition and technical features, the ratchet tool disclosed in the present invention is firstly used in practice as shown in FIG. The first abutting surface 534 and the second abutting element 52 abut against the left side guide section 41. In this state, because the brake block 53 is clamped on the right side of the figure, the ratchet head 20 only It can turn clockwise in one direction; and when it is desired to switch the driving steering, as shown in Figure 7, we only need to turn the rotation control part 54 to the second steering position, and then it will switch to the first resistance. Pushing element 51 leans against the second bearing surface 535, and the second pushing element 52 leans against the state of the right side guide section 42; and the structural composition and technical features of the present invention, its functions and advantages It mainly includes: the guide structure formed by the reversing brake device itself through the second resisting element 52 and the two-stage guide recess 40, which also has a limiting function along the direction of the axial line L1, as shown in Figure 10. There is no need to add other limiting components to stabilize the limit rotation control part 54, effectively preventing the rotation control part 54 from easily slipping out of the secondary accommodating part 30, and the body does not need to drill oblique deep holes to insert positioning components, so The structure is simpler and the assembly is relatively more convenient and fast, thereby achieving the advantage of reducing manufacturing costs; moreover, the reversing positioning effect of the present invention is quite in place, because the two-stage guide recess 40 includes a left guide section 41 1. The guide path similar to the "W" shape formed by the right guide section 42 and the middle convex part 43 cooperates with the first push element 51 and the second push element 52 to be pushed elastically by the two ends of the coil spring 55 normally state, so when the user dials the rotary control member 54 to switch the steering position, the second resisting element 52 will smoothly roll and displace to the left guide section 41 or the right guide section 42, and There is no possibility of staying in the middle convex portion 43. In this way, each steering switching action can be accurately in place, effectively avoiding the problem that the conventional steering movement is not accurate and affects the switching positioning effect; in addition, the switching member The actuation has low friction characteristics and can also reduce the resistance of the back teeth.

10: Subject 11: Head end 12: Grip 13: Main container 130: axial port 131: The left side rests against the wall 132: The right side bears against the wall 20: ratchet head 21: Driving action department 22: Ring ratchet surface L1: axial line L2: radial line 30:Auxiliary container 31: inner wall 315: Assembly import port 316: Partition wall edge 32: radial channel 40, 40B: two-stage guide recess 401, 401B: the first limiting wall 402, 402B: the second limiting wall 41, 41b, 41c: left guide section 42, 42b, 42c: right guide section 43, 43b, 43c: middle convex part 50:Double-head push-up type reversing brake device 51: The first thrust element 52: The second pushing element 53: brake block 531: first side 532: second side 5321:Left against edge 5322: Right side against edge 533: Arc gear row 534: The first bearing surface 535: The second bearing surface 536: Coupling section 537: left flange 538:Right side flange 54: Turn the control part 541: inner end 542: outer end 543: Shaft part 544: Pulling Department 545: radial through hole 546: First orifice 547: Second orifice 548:Left avoidance recess 549: Right avoidance recess 55: coil spring

Fig. 1 is a three-dimensional appearance view of a preferred embodiment of the ratchet tool of the present invention. Fig. 2 is a three-dimensional perspective view of the internal structure of the head end of the main body in a preferred embodiment of the present invention. Fig. 3 is an exploded perspective view 1 of some components of a preferred embodiment of the present invention. Fig. 4 is an exploded perspective view 2 of some components of a preferred embodiment of the present invention. Fig. 5 is the external shape of the rotary control member in the first steering position according to the preferred embodiment of the present invention state floor plan. Fig. 6 is a sectional view along the radial line of the internal structure corresponding to the state of Fig. 5 . Fig. 7 is the external shape of the rotary control member in the second steering position according to the preferred embodiment of the present invention state floor plan. Fig. 8 is a sectional view along the radial line of the internal structure corresponding to the state of Fig. 7 . Fig. 9 is one end view of the head end of the main body of the preferred embodiment of the present invention. Fig. 10 is a sectional view of 10-10 in Fig. 9 . Fig. 11 is an enlarged view of the disposition of the second thrust element in Fig. 10 . Figure 12 shows the contact pattern between the first and second limiting walls and the second pushing element of the present invention Example of variation. Fig. 13 is a diagram of another variation embodiment of the two-stage guide concave portion of the present invention. Fig. 14 is a diagram of yet another variation embodiment of the two-stage guide concave portion of the present invention.

11: Head end

13: Main container

131: The left side rests against the wall

132: The right side bears against the wall

20: ratchet head

22: Ring ratchet surface

30:Auxiliary container

31: inner wall

32: radial channel

40: Two-stage guide recess

41:Left guide section

42: Right guide section

43: Middle convex part

51: The first thrust element

52: The second pushing element

53: brake block

531: first side

532: second side

5321:Left against edge

5322: Right side against edge

533: Arc gear row

534: The first bearing surface

535: The second bearing surface

536: Coupling section

537: left flange

538:Right side flange

54: Turn the control part

545: radial through hole

547: Second orifice

548:Left avoidance recess

549: Right avoidance recess

55: coil spring

Claims (5)

A ratchet tool with a double-head abutment type reversing braking device, the ratchet tool includes: a main body, including a head end and a gripping part, wherein the head end forms a main accommodating part; a ratchet head, screwed on The main accommodating part is relatively rotatable. One end surface of the ratchet head protrudes to form a driving part, and a ring-shaped ratchet surface is formed on the outer periphery of the ratchet head. According to the protrusion of the driving part The axial direction defines an axial line, and the head end of the main body defines a radial line that is orthogonal to the axial line, and the main accommodating portion has a circular shape corresponding to the axial line. Two axial ports in the shape; a secondary accommodating part, which is adjacent to one side of the main accommodating part in the form of a concave space, the secondary accommodating part has an inner wall, and one side of the inner wall forms a diameter The channel communicates with the main accommodating part, wherein the radial channel is directed toward the extension direction of the radial line, and the inner wall of the secondary accommodating part is in the shape of an axial circular hole with a corresponding to the axial line. An assembly introduction port, and a partition wall edge is defined between the assembly introduction port and the corresponding adjacent axial port; a two-stage guide recess is formed on the inner wall of the auxiliary accommodating part, and the two sections The two-stage guide recess is distributed along the extension direction of the inner wall and presents a concave shape toward the extension direction of the radial line. The two-stage guide recess includes a symmetrically distributed left guide section and a The right side guide section, an intermediate convex part is formed opposite the left side guide section and the right side guide section to distinguish the left side guide section and the right side guide section; A type reversing brake device, including a brake block, a rotation control member, a coil spring, a first resisting element and a second resisting element, wherein: the brake block is arranged in the main accommodating part and located in the Between the annular ratchet surface of the ratchet head and the rotation control member, the brake block has a first surface and a second surface, and the first surface The second surface is arranged opposite to each other, the first surface is facing the ratchet head, and an arc-shaped tooth row is formed on the first surface to engage with the annular ratchet surface, and the middle of the second surface is concave. Arc-shaped and defined to form a first abutment surface, a second abutment surface and a joint section between the first abutment surface and the second abutment surface; the rotation control member is screwed on the In the auxiliary housing part, the rotation control member is in the form of a shaft and defines an inner end, an outer end and a shaft position between the inner end and the outer end, wherein the outer end forms a pull The part is exposed outside the assembly introduction port of the auxiliary accommodation part, and the shaft column part is formed with a radial through hole. The radial through hole has a first hole and a second hole. The pulling part can be controlled by a The user pulls to drive the rotation direction of the rotation control member, which constitutes that the rotation control member has a first turning position and a second turning position in use; and the coil spring is accommodated in the radial through hole, and the second turning position A thrusting element is accommodated in the radial through hole and partially protrudes from the first opening and leans against the center of the second surface of the brake block in a concave arc shape. The second thrusting element It is accommodated in the radial through hole and partially protrudes from the second opening, and constitutes a state where the first resisting element and the second resisting element are normally elastically pushed by both ends of the coil spring; and Wherein, when the rotation control member is in the first steering position, it constitutes a state where the first resisting element abuts against the first abutting surface and the second resisting element abuts against the left side guide section , and when the rotary control member is in the second steering position, the first resisting element abuts against the second abutting surface and the second abutting element abuts against the right guide section. ; and wherein the two-stage guide recess corresponds to the extending direction of the axial line and is further formed with a first limiting wall and a second limiting wall for the corresponding side of the second resisting element to bear against, so that During the reciprocating rolling displacement process of the left guide section, the right guide section and the middle convex part, the second resisting element can obtain a firm limit in the direction corresponding to the axial line function; and wherein, the contact fit between the two-stage guide recess and the second resisting element is any one of single-point or multi-point contact. The ratchet tool with a double-head abutment type reversing brake device as described in claim 1, wherein the two sides of the concave arc-shaped part in the middle of the second surface of the brake block are relatively defined to form a left flange and a right convex The shaft part of the rotary control member is correspondingly formed with a left avoidance recess and a right avoidance recess; when the rotary control member is in the first steering position, it is formed that the left flange part enters the left side correspondingly. The state within the range of the avoidance recess, and when the rotation control member is in the second steering position, constitutes the state that the right side flange portion correspondingly enters the range of the right side avoidance recess; and the left and right sides of the second surface of the brake block A left abutting edge and a right abutting edge are formed symmetrically on the side; a left abutting wall and a right abutting wall are correspondingly formed on the left and right sides of the main accommodating portion. The ratchet tool with a double-head abutment type reversing brake device as described in claim 1, wherein the left guide section and the right guide section are symmetrically arranged and connected in the form of two arc-shaped grooves, In addition, the mountain-shaped part formed by the intersection between the left guide section and the right guide section forms the middle convex part. The ratchet tool with a double-head abutment type reversing brake device as described in claim 1, wherein the left guide section and the right guide section are in the form of two grooves arranged at symmetrical intervals, and the left guide section The flat wall part formed by the distance between the moving section and the right side guiding section forms the middle convex part. The ratchet tool with a double-headed push-off type reversing brake device as described in any one of claim 3 or 4, wherein the two-stage guide recesses have two ends that are relatively far away from each other and are respectively extended and communicated with the left bearing lean against the wall and the right side against the wall.

Images